V1.9.0 (#1660 )

* Update version.txt * Update past_version.txt
Enable Sample Rate to be spec'd in .ini file for Weather & SubGhzDecoder apps (#1659 )
2026-08-22 07:29:03 +00:00 · 2023-12-22 07:35:54 +13:00 · 2023-12-21 19:33:06 +01:00 · 2023-12-19 22:25:22 +01:00 · 2023-12-19 22:20:13 +01:00 · 2023-12-18 07:35:00 +01:00
557 changed files with 51655 additions and 10907 deletions
@@ -1,28 +1,55 @@
 import os
-import re
 import sys

-raw_git = os.popen('git log next --since="24 hours" --pretty=format:"- %h - {USERNAME}*+%al-%an*: %s"').read()
+import requests
+from datetime import datetime, timedelta, timezone
+
+# Set up your personal access token and the repository details
+token = os.environ.get('GH_TOKEN')
+repo_owner = "eried"
+repo_name = "portapack-mayhem"


-def compute_username(line):
-    stripped = re.search(r'(?<=\*)(.*?)(?=\*)', line).group(0)
+def print_stable_changelog(previous_sha):
+    url = f"compare/{previous_sha}...next"
+    commits = handle_get_request(url)
+    for commit in commits["commits"]:
+        # Print the commit details
+        print(format_output(commit))

-    pattern = re.compile("[$@+&?].*[$@+&?]")
-    if pattern.match(stripped):
-        stripped = re.sub("[$@+&?].*[$@+&?]", "", stripped)
-        stripped = re.match(r'.+?(?=-)', stripped).group(0)
+
+def print_nightly_changelog():
+    # Calculate the date and time 24 hours ago
+    since_time = (datetime.now(timezone.utc) - timedelta(hours=24)).isoformat()  # Check that this is UTC
+    url = "commits"
+    commits = handle_get_request(url, since_time)
+    for commit in commits:
+        # Print the commit details
+        print(format_output(commit))
+
+
+def handle_get_request(path, offset=None):
+    headers = {} if token == None else {"Authorization": f"Bearer {token}"}
+    params = {"since": offset}
+    url_base = f"https://api.github.com/repos/{repo_owner}/{repo_name}/"
+    response = requests.get(url_base + path, headers=headers, params=params)
+
+    # Check if the request was successful (status code 200)
+    if response.status_code == 200:
+        return response.json()
    else:
-        stripped = re.sub(r'^.*?-', "", stripped)
-    return "@" + stripped
+        print(f"Request failed with status code: {response.status_code}")
+    return None


-def compile_line(line):
-    username = compute_username(line)
-    line = re.sub(r'[*].*[*]', "", line)
-    line = line.replace("{USERNAME}", username)
-    return line
+def format_output(commit):
+    message_lines = commit["commit"]["message"].split("\n")
+    author = commit["author"]["login"] if commit["author"] and "login" in commit["author"] else commit["commit"]["author"]["name"]
+    return '- ' + commit["sha"][:8] + ' - @' + author + ': ' + message_lines[0]


-for row in raw_git.splitlines():
-    print(compile_line(row))
+if len(sys.argv) < 2:
+    print_nightly_changelog()
+else:
+    past_version = sys.argv[1]
+    print_stable_changelog(past_version)
@@ -47,6 +47,9 @@ jobs:
        run: mkdir ${{ github.workspace }}/build
      - name: Run the Docker image
        run: docker run -e VERSION_STRING=${{ steps.version_date.outputs.date }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+      - name: Create Small SD Card ZIP - No World Map
+        run: |
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard-no-map.zip sdcard
      - name: Download world map
        run: |
          wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -58,8 +61,10 @@ jobs:
          zip -j firmware.zip build/firmware/portapack-h1_h2-mayhem.bin && cd flashing && zip -r ../firmware.zip *
      - name: Create SD Card ZIP
        run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && zip -r sdcard.zip sdcard
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard.zip sdcard
      - name: Create changelog
+        env:
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}
        run: |
          CHANGELOG=$(python3 .github/workflows/changelog.py)
          CHANGELOG="${CHANGELOG//'%'/'%25'}"
@@ -103,3 +108,13 @@ jobs:
          asset_path: ./sdcard.zip
          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_COPY_TO_SDCARD.zip
          asset_content_type: application/zip
+      - name: Upload SD Card Assets - No Map
+        id: upload-sd-card-asset-no-map 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./sdcard-no-map.zip
+          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_COPY_TO_SDCARD-no-world-map.zip
+          asset_content_type: application/zip
@@ -31,6 +31,9 @@ jobs:
        run: mkdir ${{ github.workspace }}/build
      - name: Run the Docker image
        run: docker run -e VERSION_STRING=${{ steps.version.outputs.version }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+      - name: Create Small SD Card ZIP - No World Map
+        run: |
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard-no-map.zip sdcard
      - name: Download world map
        run: |
          wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -42,10 +45,12 @@ jobs:
          zip -j firmware.zip build/firmware/portapack-h1_h2-mayhem.bin && cd flashing && zip -r ../firmware.zip *
      - name: Create SD Card ZIP
        run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && zip -r sdcard.zip sdcard
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard.zip sdcard
      - name: Create changelog
+        env:
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}
        run: |
-          CHANGELOG=$(python3 .github/workflows/stable_changelog.py ${{ steps.past_version.outputs.past_version }})
+          CHANGELOG=$(python3 .github/workflows/changelog.py ${{ steps.past_version.outputs.past_version }})
          CHANGELOG="${CHANGELOG//'%'/'%25'}"
          CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
          CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
@@ -96,4 +101,14 @@ jobs:
          asset_path: ./sdcard.zip
          asset_name: mayhem_${{ steps.version.outputs.version }}_COPY_TO_SDCARD.zip
          asset_content_type: application/zip
+      - name: Upload SD Card Assets - No Map
+        id: upload-sd-card-asset-no-map 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./sdcard-no-map.zip
+          asset_name: mayhem_${{ steps.version.outputs.version }}_COPY_TO_SDCARD-no-world-map.zip
+          asset_content_type: application/zip
     
@@ -1 +1 @@
-v1.7.1
+v1.8.0
@@ -1,30 +0,0 @@
-import os
-import re
-import sys
-
-past_version = sys.argv[1]
-
-raw_git = os.popen('git log ' + past_version + '..next --pretty=format:"- %h - {USERNAME}*+%al-%an*: %s"').read()
-
-
-def compute_username(line):
-    stripped = re.search(r'(?<=\*)(.*?)(?=\*)', line).group(0)
-
-    pattern = re.compile("[$@+&?].*[$@+&?]")
-    if pattern.match(stripped):
-        stripped = re.sub("[$@+&?].*[$@+&?]", "", stripped)
-        stripped = re.match(r'.+?(?=-)', stripped).group(0)
-    else:
-        stripped = re.sub(r'^.*?-', "", stripped)
-    return "@" + stripped
-
-
-def compile_line(line):
-    username = compute_username(line)
-    line = re.sub(r'[*].*[*]', "", line)
-    line = line.replace("{USERNAME}", username)
-    return line
-
-
-for row in raw_git.splitlines():
-    print(compile_line(row))
@@ -1 +1 @@
-v1.7.2
+v1.9.0
@@ -55,10 +55,11 @@ CMakeFiles/
 # Debugging
 .gdbinit*

-# Editor files
+# Editor/IDE files
 *.sublime-project
 *.sublime-workspace
 .vscode
+.idea

 # VSCodium extensions
 .history
@@ -42,6 +42,12 @@ if ("$ENV{VERSION_STRING}" STREQUAL "")
 	endif (GIT_VERSION_FOUND)
 endif()

+execute_process(
+	COMMAND bash "-c" "echo ${VERSION} | md5sum | head -c 8"
+	OUTPUT_VARIABLE VERSION_MD5
+)
+set(VERSION_MD5 "0x${VERSION_MD5}")
+
 set(LICENSE_PATH ${CMAKE_CURRENT_LIST_DIR}/LICENSE)
 set(HARDWARE_PATH ${CMAKE_CURRENT_LIST_DIR}/hardware)

@@ -1,6 +1,6 @@
 # PortaPack Mayhem

-[![Build Status](https://travis-ci.com/eried/portapack-mayhem.svg?branch=master)](https://travis-ci.com/eried/portapack-mayhem) [![Nightly Release](https://github.com/eried/portapack-mayhem/actions/workflows/create_nightly_release.yml/badge.svg?branch=next)](https://github.com/eried/portapack-mayhem/actions/workflows/create_nightly_release.yml) [![CodeScene Code Health](https://codescene.io/projects/8381/status-badges/code-health)](https://codescene.io/projects/8381) [![GitHub All Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/total)](https://github.com/eried/portapack-mayhem/releases) [![GitHub Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/latest/total)](https://github.com/eried/portapack-mayhem/releases/latest) [![Docker Hub Pulls](https://img.shields.io/docker/pulls/eried/portapack.svg)](https://hub.docker.com/r/eried/portapack) [![Discord Chat](https://img.shields.io/discord/719669764804444213.svg)](https://discord.gg/tuwVMv3)  [![Check bounties!](https://img.shields.io/bountysource/team/portapack-mayhem/activity?color=%2333ccff&label=bountysource%20%28USD%29&style=plastic)](https://www.bountysource.com/teams/portapack-mayhem/issues)
+[![Build Status](https://travis-ci.com/eried/portapack-mayhem.svg?branch=master)](https://travis-ci.com/eried/portapack-mayhem) [![Nightly Release](https://github.com/eried/portapack-mayhem/actions/workflows/create_nightly_release.yml/badge.svg?branch=next)](https://github.com/eried/portapack-mayhem/actions/workflows/create_nightly_release.yml) [![CodeScene Code Health](https://codescene.io/projects/8381/status-badges/code-health)](https://codescene.io/projects/8381) [![GitHub All Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/total)](https://github.com/eried/portapack-mayhem/releases) [![GitHub Releases](https://img.shields.io/github/downloads/eried/portapack-mayhem/latest/total)](https://github.com/eried/portapack-mayhem/releases/latest) [![Docker Hub Pulls](https://img.shields.io/docker/pulls/eried/portapack.svg)](https://hub.docker.com/r/eried/portapack) [![Discord Chat](https://dcbadge.vercel.app/api/server/tuwVMv3?style=flat)](https://discord.gg/tuwVMv3)

 This is a fork of the [Havoc](https://github.com/furrtek/portapack-havoc/) firmware, which itself was a fork of the [PortaPack](https://github.com/sharebrained/portapack-hackrf) firmware, an add-on for the [HackRF](http://greatscottgadgets.com/hackrf/). A fork is a derivate, in this case one that has extra features and fixes when compared to the older versions.

@@ -8,11 +8,11 @@ This is a fork of the [Havoc](https://github.com/furrtek/portapack-havoc/) firmw

 *[PortaPack H2+HackRF+battery](https://s.click.aliexpress.com/e/_DmU7GQX) (clone) with a custom [3d printed case](https://github.com/eried/portapack-mayhem/wiki/H2-Enclosure)*

-# Quick overview
+# What is this?

-If you are new to *HackRF+PortaPack+Mayhem*, there is an awesome introductory video by [Tech Minds](https://www.youtube.com/channel/UC9a8Z6Sp6eb2s3O79pX5Zvg) available:
+If you are new to *HackRF+PortaPack+Mayhem*, check this video:

-[![Setup and overview](https://img.youtube.com/vi/kjFB58Y1TAo/0.jpg)](https://www.youtube.com/watch?v=kjFB58Y1TAo)
+[![What is?](https://img.youtube.com/vi/alrFbY5vxt4/0.jpg)](https://www.youtube.com/watch?v=alrFbY5vxt4)

 # Frequently Asked Questions

@@ -20,7 +20,9 @@ This repository expands upon the previous work by many people and aims to consta

 ## What to buy?

-:heavy_check_mark: A recommended one is this [PortaPack H2](https://s.click.aliexpress.com/e/_DmU7GQX) pack, that includes everything you need. Sadly, the people making the H2 never made the updated schematics available (against the terms of the license). 
+:heavy_check_mark: A recommended one is this [PortaPack H2](https://s.click.aliexpress.com/e/_DmU7GQX), that includes everything you need with the plastic case "inspired" on [this](https://github.com/eried/portapack-mayhem/wiki/H2-Enclosure).
+
+:heavy_check_mark: Our friends at OpenSourceSDRLab give away five units every three months in our discord (check the badge on top) of their [PortaPack H2](https://www.aliexpress.com/item/4000247041639.html?gatewayAdapt=4itemAdapt), you can support them too by ordering.

 :heavy_check_mark: Another popular option is the clone of the [PortaPack H1](https://s.click.aliexpress.com/e/_Dkbqs2X).

@@ -48,9 +50,11 @@ To support the people behind the hardware, please buy a genuine [HackRF](https:/
 ## What if I really want something specific?
 If what you need can be relevant in general, you can [request a feature](https://github.com/eried/portapack-mayhem/issues/new?labels=enhancement&template=feature_request.md).

-You can create a bounty and invite people to your own bounty. This will incentivize coders to work on a new feature, solving a bug or even writting documentation. Start a bounty by [creating](https://github.com/eried/portapack-mayhem/issues/new/choose) or [choosing](https://github.com/eried/portapack-mayhem/issues/) an existing issue. Then, go to [Bountysource](https://www.bountysource.com/) and post a bounty using the link to that specific [issue](https://www.bountysource.com/teams/portapack-mayhem/issues).
+<del>You can create a bounty and invite people to your own bounty. This will incentivize coders to work on a new feature, solving a bug or even writting documentation. Start a bounty by [creating](https://github.com/eried/portapack-mayhem/issues/new/choose) or [choosing](https://github.com/eried/portapack-mayhem/issues/) an existing issue. Then, go to [Bountysource](https://www.bountysource.com/) and post a bounty using the link to that specific [issue](https://www.bountysource.com/teams/portapack-mayhem/issues).</del>

-Promote your bounty over our Discord by clicking the chat badge on [top](#portapack-mayhem).
+<del>Promote your bounty over our Discord by clicking the chat badge on [top](#portapack-mayhem).</del>
+
+Bountysource has not been reliable lately, so until this changes, please **DO NOT** post a bounty there. Go to our Discord by clicking the chat badge on [top](#portapack-mayhem) and discuss there.

 ## What if I need help?
 First, check the [documentation](https://github.com/eried/portapack-mayhem/wiki). If you find a bug or you think the problem is related to the current repository, please open an [issue](https://github.com/eried/portapack-mayhem/issues/new/choose).
@@ -0,0 +1,41 @@
+FROM ubuntu:xenial
+
+# Set location to download ARM toolkit from.
+# This will need to be changed over time or replaced with a static link to the latest release.
+ENV ARMBINURL=https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2019q4/gcc-arm-none-eabi-9-2019-q4-major-aarch64-linux.tar.bz2?revision=4583ce78-e7e7-459a-ad9f-bff8e94839f1&rev=4583ce78e7e7459aad9fbff8e94839f1&hash=C9B942D74CEA05FF9DE28380F267BB7D3F3B17A6 \
+	PATH=$HOME/bin:$PATH:/opt/build/armbin/bin
+
+#Create volume /havoc/bin for compiled firmware binaries
+VOLUME /havoc
+WORKDIR /havoc/firmware
+
+# Fetch dependencies from APT
+RUN apt-get update && \
+	apt-get install -y git tar wget dfu-util cmake python3 ccache bzip2 liblz4-tool curl && \
+	apt-get -qy autoremove
+
+#Install current pip from PyPa
+RUN curl https://bootstrap.pypa.io/pip/3.4/get-pip.py -o get-pip.py && \
+	python3 get-pip.py
+
+#Fetch additional dependencies from Python 3.x pip
+RUN pip install pyyaml
+RUN ln -s /usr/bin/python3 /usr/bin/python && \
+	ln -s /usr/bin/pip3 /usr/bin/pip
+
+ENV LANG C.UTF-8
+ENV LC_ALL C.UTF-8
+
+# Grab the GNU ARM toolchain from arm.com
+# Then extract contents to /opt/build/armbin/
+RUN mkdir /opt/build && cd /opt/build && \
+	wget -O gcc-arm-none-eabi $ARMBINURL && \
+	mkdir armbin && \
+	tar --strip=1 -xjvf gcc-arm-none-eabi -C armbin
+
+# Configure CCACHE
+RUN mkdir ~/bin && cd ~/bin && \
+	for tool in gcc g++ cpp c++;do ln -s $(which ccache) arm-none-eabi-$tool;done
+
+CMD cd .. && cd build && \
+	cmake .. && make firmware
@@ -26,6 +26,7 @@ set(CHIBIOS ${PROJECT_SOURCE_DIR}/chibios)
 set(CHIBIOS_PORTAPACK ${PROJECT_SOURCE_DIR}/chibios-portapack)

 set(EXTRACT_CPLD_DATA ${PROJECT_SOURCE_DIR}/tools/extract_cpld_data.py)
+set(EXPORT_EXTERNAL_APP_IMAGES ${PROJECT_SOURCE_DIR}/tools/export_external_apps.py)
 set(MAKE_SPI_IMAGE ${PROJECT_SOURCE_DIR}/tools/make_spi_image.py)
 set(MAKE_IMAGE_CHUNK ${PROJECT_SOURCE_DIR}/tools/make_image_chunk.py)
 set(LZ4 lz4)
@@ -53,10 +54,18 @@ add_custom_target(

 add_custom_target(
 	program
+	COMMAND ${PROJECT_SOURCE_DIR}/tools/enter_mode.sh hackrf
 	COMMAND dfu-util --device 1fc9:000c --download ${HACKRF_FIRMWARE_DFU_IMAGE} || (exit 0) # We need to add it for dfu-utils v.011 , (in v.09 it is not necessary)
 	COMMAND sleep 3s
-	COMMAND hackrf_spiflash -w ${FIRMWARE_FILENAME}
-	DEPENDS ${FIRMWARE_FILENAME}
+	COMMAND hackrf_spiflash -i -R -w ${FIRMWARE_FILENAME}
+	DEPENDS firmware ${FIRMWARE_FILENAME}
+)
+
+add_custom_target(
+	program-external-apps
+	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+	COMMAND ${PROJECT_SOURCE_DIR}/tools/copy_external_apps.sh
+	DEPENDS program
 )

 # TODO: Bad hack to fix location of LICENSE file for tar.
@@ -27,16 +27,24 @@

 enable_language(C CXX ASM)

+include(CheckCXXCompilerFlag)
+
 project(application)

 # Compiler options here.
-set(USE_OPT "-Os -g --specs=nano.specs")
+set(USE_OPT "-Os -g --specs=nano.specs -specs=nosys.specs")

 # C specific options here (added to USE_OPT).
 set(USE_COPT "-std=gnu99")

 # C++ specific options here (added to USE_OPT).
-set(USE_CPPOPT "-std=c++17 -fno-rtti -fno-exceptions -Weffc++ -Wuninitialized")
+check_cxx_compiler_flag("-std=c++20" cpp20_supported)
+if(cpp20_supported)
+	set(USE_CPPOPT "-std=c++20")
+else()
+	set(USE_CPPOPT "-std=c++17")
+endif()
+set(USE_CPPOPT "${USE_CPPOPT} -flto -fno-rtti -fno-exceptions -Weffc++ -Wuninitialized -Wno-volatile")

 # Enable this if you want the linker to remove unused code and data
 set(USE_LINK_GC yes)
@@ -89,6 +97,7 @@ include(${CHIBIOS_PORTAPACK}/os/ports/GCC/ARMCMx/LPC43xx_M0/port.cmake)
 include(${CHIBIOS}/os/kernel/kernel.cmake)
 include(${CHIBIOS_PORTAPACK}/os/various/fatfs_bindings/fatfs.cmake)
 include(${CHIBIOS}/test/test.cmake)
+include(external/external.cmake)

 # Define linker script file here
 set(LDSCRIPT ${PORTLD}/LPC43xx_M0.ld)
@@ -104,6 +113,17 @@ set(CSRC
 	${BOARDSRC}
 	${FATFSSRC}
 	firmware_info.c
+	usb_serial_cdc.c
+	usb_serial_descriptor.c
+	usb_serial_endpoints.c
+	usb_serial_io.c
+	${HACKRF_PATH}/firmware/common/usb.c
+	${HACKRF_PATH}/firmware/common/usb_queue.c
+	${HACKRF_PATH}/firmware/hackrf_usb/usb_device.c
+	${HACKRF_PATH}/firmware/common/usb_request.c
+	${HACKRF_PATH}/firmware/common/usb_standard_request.c
+	${CHIBIOS}/os/various/shell.c
+	${CHIBIOS}/os/various/chprintf.c
 )

 # C++ sources that can be compiled in ARM or THUMB mode depending on the global
@@ -153,6 +173,7 @@ set(CPPSRC
 	${COMMON}/ui_painter.cpp
 	${COMMON}/ui_text.cpp
 	${COMMON}/ui_widget.cpp
+	${COMMON}/ui_language.cpp
 	${COMMON}/utility.cpp
 	${COMMON}/wm8731.cpp
 	${COMMON}/performance_counter.cpp
@@ -167,15 +188,24 @@ set(CPPSRC
 	#emu_cc1101.cpp
 	rfm69.cpp
 	event_m0.cpp
+	file_reader.cpp
 	file.cpp
+	freqman_db.cpp
 	freqman.cpp
+	io_convert.cpp
 	io_file.cpp
 	io_wave.cpp
+	iq_trim.cpp
 	irq_controls.cpp
 	irq_lcd_frame.cpp
 	irq_rtc.cpp
 	log_file.cpp
+	metadata_file.cpp
 	portapack.cpp
+	usb_serial_shell.cpp
+	usb_serial_event.cpp
+	usb_serial_thread.cpp
+	usb_serial.cpp
 	qrcodegen.cpp
 	radio.cpp
 	receiver_model.cpp
@@ -224,77 +254,83 @@ set(CPPSRC
 	ui/ui_styles.cpp
 	ui/ui_tabview.cpp
 	ui/ui_textentry.cpp
+	ui/ui_tone_key.cpp
 	ui/ui_transmitter.cpp
+	apps/acars_app.cpp
+	apps/ais_app.cpp
+	apps/analog_audio_app.cpp
+	# apps/analog_tv_app.cpp
+	apps/ble_comm_app.cpp
+	apps/ble_rx_app.cpp
+	apps/ble_tx_app.cpp
+	apps/capture_app.cpp
+	apps/ert_app.cpp
+	apps/gps_sim_app.cpp
+	# apps/lge_app.cpp
+	apps/pocsag_app.cpp
+	# apps/replay_app.cpp
+	apps/soundboard_app.cpp
+	apps/tpms_app.cpp
+	apps/tpms_app.cpp
 	apps/ui_about_simple.cpp
 	apps/ui_adsb_rx.cpp
 	apps/ui_adsb_tx.cpp
-	apps/ui_afsk_rx.cpp
 	apps/ui_aprs_rx.cpp
-	apps/ui_btle_rx.cpp
-	apps/ui_nrf_rx.cpp
 	apps/ui_aprs_tx.cpp
 	apps/ui_bht_tx.cpp
-	apps/ui_dfu_menu.cpp
-	apps/ui_coasterp.cpp
+	apps/ui_btle_rx.cpp
+	# apps/ui_coasterp.cpp
 	apps/ui_debug.cpp
+	apps/ui_dfu_menu.cpp
 	apps/ui_encoders.cpp
 	apps/ui_fileman.cpp
 	apps/ui_flash_utility.cpp
-	apps/ui_sd_over_usb.cpp
 	apps/ui_freqman.cpp
-	apps/ui_jammer.cpp
-    #apps/ui_keyfob.cpp
-	apps/ui_lcr.cpp
-	apps/lge_app.cpp
+	apps/ui_fsk_rx.cpp
+	apps/ui_iq_trim.cpp
+	# apps/ui_jammer.cpp
+    # apps/ui_keyfob.cpp
+	# apps/ui_lcr.cpp
+	apps/ui_level.cpp  
 	apps/ui_looking_glass_app.cpp
 	apps/ui_mictx.cpp
 	apps/ui_modemsetup.cpp
 	apps/ui_morse.cpp
+	# apps/ui_nrf_rx.cpp
 	# apps/ui_nuoptix.cpp
+	apps/ui_playlist.cpp
 	apps/ui_pocsag_tx.cpp
 	apps/ui_rds.cpp
+	apps/ui_recon_settings.cpp
+	apps/ui_recon.cpp  
 	apps/ui_remote.cpp
 	apps/ui_scanner.cpp
-	apps/ui_search.cpp
+	apps/ui_sd_over_usb.cpp
 	apps/ui_sd_wipe.cpp
+	apps/ui_search.cpp
 	apps/ui_settings.cpp
 	apps/ui_siggen.cpp
 	apps/ui_sonde.cpp
-	apps/ui_sstvtx.cpp
+	apps/ui_spectrum_painter_image.cpp
+	apps/ui_spectrum_painter_text.cpp
+	apps/ui_spectrum_painter.cpp
 	apps/ui_ss_viewer.cpp
+	apps/ui_sstvtx.cpp
+	apps/ui_subghzd.cpp
 	# apps/ui_test.cpp
 	apps/ui_text_editor.cpp
 	apps/ui_tone_search.cpp
 	apps/ui_touch_calibration.cpp
 	apps/ui_touchtunes.cpp
 	apps/ui_view_wav.cpp
+	apps/ui_weatherstation.cpp
 	apps/ui_whipcalc.cpp
-	apps/acars_app.cpp
-	apps/ais_app.cpp
-	apps/analog_audio_app.cpp
-	apps/analog_tv_app.cpp
-	apps/capture_app.cpp
-	apps/ert_app.cpp
-	apps/lge_app.cpp
-	apps/pocsag_app.cpp
-	apps/replay_app.cpp
-	apps/ui_playlist.cpp
-	apps/gps_sim_app.cpp
-	apps/soundboard_app.cpp
-	apps/ui_recon.cpp  
-	apps/ui_recon_settings.cpp
-	apps/ui_level.cpp  
-	apps/tpms_app.cpp
-	apps/tpms_app.cpp
-	apps/ui_spectrum_painter.cpp
-	apps/ui_spectrum_painter_image.cpp
-	apps/ui_spectrum_painter_text.cpp
 	protocols/aprs.cpp
 	protocols/ax25.cpp
 	protocols/bht.cpp
 	protocols/dcs.cpp
 	protocols/encoders.cpp
-	protocols/lcr.cpp
+	# protocols/lcr.cpp
 	protocols/modems.cpp
 	protocols/rds.cpp
 	# ui_handwrite.cpp
@@ -303,9 +339,13 @@ set(CPPSRC
 	# ui_replay_view.cpp
 	# ui_script.cpp
 	ui_sd_card_debug.cpp
+	config_mode.cpp
 	${CPLD_20150901_DATA_CPP}
 	${CPLD_20170522_DATA_CPP}
 	${HACKRF_CPLD_DATA_CPP}
+	ui_external_items_menu_loader.cpp
+
+	${EXTCPPSRC}
 )

 # C sources to be compiled in ARM mode regardless of the global setting.
@@ -338,6 +378,9 @@ set(INCDIR ${CMAKE_CURRENT_BINARY_DIR} ${COMMON} ${PORTINC} ${KERNINC} ${TESTINC
 	${HALINC} ${PLATFORMINC} ${BOARDINC}
 	${FATFSINC}
 	${CHIBIOS}/os/various
+	${HACKRF_PATH}/firmware/libopencm3/include
+	${HACKRF_PATH}/firmware/common
+	${HACKRF_PATH}/firmware
 	ui
 	hw
 	apps
@@ -381,7 +424,7 @@ set(CPPWARN "-Wall -Wextra -Wno-psabi")
 # List all default C defines here, like -D_DEBUG=1
 # TODO: Switch -DCRT0_INIT_DATA depending on load from RAM or SPIFI?
 # NOTE: _RANDOM_TCC to kill a GCC 4.9.3 error with std::max argument types
-set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"'")
+set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"' -DVERSION_MD5=${VERSION_MD5}")

 # List all default ASM defines here, like -D_DEBUG=1
 set(DADEFS)
@@ -450,12 +493,13 @@ set_target_properties(${PROJECT_NAME}.elf PROPERTIES LINK_DEPENDS ${LDSCRIPT})
 add_definitions(${DEFS})
 include_directories(. ${INCDIR})
 link_directories(${LLIBDIR})
-target_link_libraries(${PROJECT_NAME}.elf ${LIBS})
+target_link_libraries(${PROJECT_NAME}.elf ${LIBS} "-L${CMAKE_CURRENT_LIST_DIR}/external")
 target_link_libraries(${PROJECT_NAME}.elf -Wl,-Map=${PROJECT_NAME}.map)

 add_custom_command(
 	OUTPUT ${PROJECT_NAME}.bin
-	COMMAND ${CMAKE_OBJCOPY} -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}.bin
+	COMMAND ${CMAKE_OBJCOPY} -v -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}.bin --remove-section=.external_app_*
+	COMMAND ${EXPORT_EXTERNAL_APP_IMAGES} ${PROJECT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_OBJCOPY} ${EXTAPPLIST}
 	DEPENDS ${PROJECT_NAME}.elf
 )

@@ -2,6 +2,7 @@
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 * Copyright (C) 2022 Arjan Onwezen
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -23,89 +24,281 @@

 #include "app_settings.hpp"

+#include "convert.hpp"
 #include "file.hpp"
+#include "file_reader.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
-#include <cstring>
+#include "utility.hpp"
+
 #include <algorithm>
+#include <cstring>
+#include <string_view>

-namespace std {
+namespace fs = std::filesystem;
+using namespace portapack;

-int app_settings::load(std::string application, AppSettings* settings) {
-    if (portapack::persistent_memory::load_app_settings()) {
-        file_path = folder + "/" + application + ".ini";
+namespace {
+fs::path get_settings_path(const std::string& app_name) {
+    return fs::path{u"/SETTINGS"} / app_name + u".ini";
+}
+}  // namespace

-        auto error = settings_file.open(file_path);
-        if (!error.is_valid()) {
-            auto error = settings_file.read(file_content, std::min((int)settings_file.size(), MAX_FILE_CONTENT_SIZE));
-
-            settings->baseband_bandwidth = std::app_settings::read_long_long(file_content, "baseband_bandwidth=");
-            settings->channel_bandwidth = std::app_settings::read_long_long(file_content, "channel_bandwidth=");
-            settings->lna = std::app_settings::read_long_long(file_content, "lna=");
-            settings->modulation = std::app_settings::read_long_long(file_content, "modulation=");
-            settings->rx_amp = std::app_settings::read_long_long(file_content, "rx_amp=");
-            settings->rx_frequency = std::app_settings::read_long_long(file_content, "rx_frequency=");
-            settings->sampling_rate = std::app_settings::read_long_long(file_content, "sampling_rate=");
-            settings->vga = std::app_settings::read_long_long(file_content, "vga=");
-            settings->tx_amp = std::app_settings::read_long_long(file_content, "tx_amp=");
-            settings->tx_frequency = std::app_settings::read_long_long(file_content, "tx_frequency=");
-            settings->tx_gain = std::app_settings::read_long_long(file_content, "tx_gain=");
-            settings->step = std::app_settings::read_long_long(file_content, "step=");
-            settings->modulation = std::app_settings::read_long_long(file_content, "modulation=");
-            settings->am_config_index = std::app_settings::read_long_long(file_content, "am_config_index=");
-            settings->nbfm_config_index = std::app_settings::read_long_long(file_content, "nbfm_config_index=");
-            settings->wfm_config_index = std::app_settings::read_long_long(file_content, "wfm_config_index=");
-            settings->squelch = std::app_settings::read_long_long(file_content, "squelch=");
-
-            rc = SETTINGS_OK;
-        } else
-            rc = SETTINGS_UNABLE_TO_LOAD;
-    } else
-        rc = SETTINGS_DISABLED;
-    return (rc);
+void BoundSetting::parse(std::string_view value) {
+    switch (type_) {
+        case SettingType::I64:
+            parse_int(value, as<int64_t>());
+            break;
+        case SettingType::I32:
+            parse_int(value, as<int32_t>());
+            break;
+        case SettingType::U32:
+            parse_int(value, as<uint32_t>());
+            break;
+        case SettingType::U8:
+            parse_int(value, as<uint8_t>());
+            break;
+        case SettingType::String:
+            as<std::string>() = trim(value);
+            break;
+        case SettingType::Bool: {
+            int parsed = 0;
+            parse_int(value, parsed);
+            as<bool>() = (parsed != 0);
+            break;
+        }
+    };
 }

-int app_settings::save(std::string application, AppSettings* settings) {
-    if (portapack::persistent_memory::save_app_settings()) {
-        file_path = folder + "/" + application + ".ini";
-        make_new_directory(folder);
+void BoundSetting::write(File& file) const {
+    // NB: Write directly without allocations. This happens on every
+    // app exit when enabled so should be fast to keep the UX responsive.
+    StringFormatBuffer buffer;
+    size_t length = 0;

-        auto error = settings_file.create(file_path);
-        if (!error.is_valid()) {
-            // Save common setting
-            settings_file.write_line("baseband_bandwidth=" + to_string_dec_uint(portapack::receiver_model.baseband_bandwidth()));
-            settings_file.write_line("channel_bandwidth=" + to_string_dec_uint(portapack::transmitter_model.channel_bandwidth()));
-            settings_file.write_line("lna=" + to_string_dec_uint(portapack::receiver_model.lna()));
-            settings_file.write_line("rx_amp=" + to_string_dec_uint(portapack::receiver_model.rf_amp()));
-            settings_file.write_line("sampling_rate=" + to_string_dec_uint(portapack::receiver_model.sampling_rate()));
-            settings_file.write_line("tx_amp=" + to_string_dec_uint(portapack::transmitter_model.rf_amp()));
-            settings_file.write_line("tx_gain=" + to_string_dec_uint(portapack::transmitter_model.tx_gain()));
-            settings_file.write_line("vga=" + to_string_dec_uint(portapack::receiver_model.vga()));
-            // Save other settings from struct
-            settings_file.write_line("rx_frequency=" + to_string_dec_uint(settings->rx_frequency));
-            settings_file.write_line("tx_frequency=" + to_string_dec_uint(settings->tx_frequency));
-            settings_file.write_line("step=" + to_string_dec_uint(settings->step));
-            settings_file.write_line("modulation=" + to_string_dec_uint(settings->modulation));
-            settings_file.write_line("am_config_index=" + to_string_dec_uint(settings->am_config_index));
-            settings_file.write_line("nbfm_config_index=" + to_string_dec_uint(settings->nbfm_config_index));
-            settings_file.write_line("wfm_config_index=" + to_string_dec_uint(settings->wfm_config_index));
-            settings_file.write_line("squelch=" + to_string_dec_uint(settings->squelch));
+    file.write(name_.data(), name_.length());
+    file.write("=", 1);

-            rc = SETTINGS_OK;
-        } else
-            rc = SETTINGS_UNABLE_TO_SAVE;
-    } else
-        rc = SETTINGS_DISABLED;
-    return (rc);
-}
-
-long long int app_settings::read_long_long(char* file_content, const char* setting_text) {
-    auto position = strstr(file_content, (char*)setting_text);
-    if (position) {
-        position += strlen((char*)setting_text);
-        setting_value = strtoll(position, nullptr, 10);
+    switch (type_) {
+        case SettingType::I64:
+            file.write(to_string_dec_int(as<int64_t>(), buffer, length), length);
+            break;
+        case SettingType::I32:
+            file.write(to_string_dec_int(as<int32_t>(), buffer, length), length);
+            break;
+        case SettingType::U32:
+            file.write(to_string_dec_uint(as<uint32_t>(), buffer, length), length);
+            break;
+        case SettingType::U8:
+            file.write(to_string_dec_uint(as<uint8_t>(), buffer, length), length);
+            break;
+        case SettingType::String: {
+            const auto& str = as<std::string>();
+            file.write(str.data(), str.length());
+            break;
+        }
+        case SettingType::Bool:
+            file.write(as<bool>() ? "1" : "0", 1);
+            break;
    }
-    return (setting_value);
+
+    file.write("\r\n", 2);
 }

-} /* namespace std */
+SettingsStore::SettingsStore(std::string_view store_name, SettingBindings bindings)
+    : store_name_{store_name}, bindings_{bindings} {
+    reload();
+}
+
+SettingsStore::~SettingsStore() {
+    save();
+}
+
+void SettingsStore::reload() {
+    load_settings(store_name_, bindings_);
+}
+
+void SettingsStore::save() const {
+    save_settings(store_name_, bindings_);
+}
+
+bool load_settings(std::string_view store_name, SettingBindings& bindings) {
+    File f;
+    auto path = get_settings_path(std::string{store_name});
+
+    auto error = f.open(path);
+    if (error)
+        return false;
+
+    auto reader = FileLineReader(f);
+    for (const auto& line : reader) {
+        auto cols = split_string(line, '=');
+
+        if (cols.size() != 2)
+            continue;
+
+        // Find a binding with the name.
+        auto it = std::find_if(
+            bindings.begin(), bindings.end(),
+            [name = cols[0]](auto& bound_setting) {
+                return name == bound_setting.name();
+            });
+
+        // If found, parse the value.
+        if (it != bindings.end())
+            it->parse(cols[1]);
+    }
+
+    return true;
+}
+
+bool save_settings(std::string_view store_name, const SettingBindings& bindings) {
+    File f;
+    auto path = get_settings_path(std::string{store_name});
+
+    make_new_directory(SETTINGS_DIR);
+    auto error = f.create(path);
+    if (error)
+        return false;
+
+    for (const auto& bound_setting : bindings)
+        bound_setting.write(f);
+
+    return true;
+}
+
+namespace app_settings {
+
+void copy_to_radio_model(const AppSettings& settings) {
+    // NB: Don't actually adjust the radio here or it may hang.
+    // Specifically 'modulation' which requires a running baseband.
+
+    if (flags_enabled(settings.mode, Mode::TX)) {
+        if (!flags_enabled(settings.options, Options::UseGlobalTargetFrequency))
+            persistent_memory::set_target_frequency(settings.tx_frequency);
+
+        transmitter_model.configure_from_app_settings(settings);
+    }
+
+    if (flags_enabled(settings.mode, Mode::RX)) {
+        if (!flags_enabled(settings.options, Options::UseGlobalTargetFrequency))
+            persistent_memory::set_target_frequency(settings.rx_frequency);
+
+        receiver_model.configure_from_app_settings(settings);
+        receiver_model.set_configuration_without_update(
+            static_cast<ReceiverModel::Mode>(settings.modulation),
+            settings.step,
+            settings.am_config_index,
+            settings.nbfm_config_index,
+            settings.wfm_config_index,
+            settings.squelch);
+    }
+
+    receiver_model.set_frequency_step(settings.step);
+    receiver_model.set_normalized_headphone_volume(settings.volume);
+}
+
+void copy_from_radio_model(AppSettings& settings) {
+    if (flags_enabled(settings.mode, Mode::TX)) {
+        settings.tx_frequency = transmitter_model.target_frequency();
+        settings.baseband_bandwidth = transmitter_model.baseband_bandwidth();
+        settings.sampling_rate = transmitter_model.sampling_rate();
+        settings.tx_amp = transmitter_model.rf_amp();
+        settings.tx_gain = transmitter_model.tx_gain();
+        settings.channel_bandwidth = transmitter_model.channel_bandwidth();
+    }
+
+    if (flags_enabled(settings.mode, Mode::RX)) {
+        settings.rx_frequency = receiver_model.target_frequency();
+        settings.baseband_bandwidth = receiver_model.baseband_bandwidth();
+        settings.sampling_rate = receiver_model.sampling_rate();
+        settings.lna = receiver_model.lna();
+        settings.vga = receiver_model.vga();
+        settings.rx_amp = receiver_model.rf_amp();
+        settings.squelch = receiver_model.squelch_level();
+
+        settings.modulation = static_cast<uint8_t>(receiver_model.modulation());
+        settings.am_config_index = receiver_model.am_configuration();
+        settings.nbfm_config_index = receiver_model.nbfm_configuration();
+        settings.wfm_config_index = receiver_model.wfm_configuration();
+    }
+
+    settings.step = receiver_model.frequency_step();
+    settings.volume = receiver_model.normalized_headphone_volume();
+}
+
+/* SettingsManager *************************************************/
+SettingsManager::SettingsManager(std::string_view app_name, Mode mode, Options options)
+    : SettingsManager{app_name, mode, options, {}} {}
+
+SettingsManager::SettingsManager(
+    std::string_view app_name,
+    Mode mode,
+    SettingBindings additional_settings)
+    : SettingsManager{app_name, mode, Options::None, std::move(additional_settings)} {}
+
+SettingsManager::SettingsManager(
+    std::string_view app_name,
+    Mode mode,
+    Options options,
+    SettingBindings additional_settings)
+    : app_name_{app_name},
+      settings_{},
+      bindings_{},
+      loaded_{false} {
+    settings_.mode = mode;
+    settings_.options = options;
+
+    // Pre-alloc enough for app settings and additional settings.
+    additional_settings.reserve(COMMON_APP_SETTINGS_COUNT + additional_settings.size());
+    bindings_ = std::move(additional_settings);
+
+    // Settings should always be loaded because apps now rely
+    // on being able to store UI settings, config, etc.
+
+    // Transmitter model settings.
+    if (flags_enabled(mode, Mode::TX)) {
+        bindings_.emplace_back("tx_frequency"sv, &settings_.tx_frequency);
+        bindings_.emplace_back("tx_amp"sv, &settings_.tx_amp);
+        bindings_.emplace_back("tx_gain"sv, &settings_.tx_gain);
+        bindings_.emplace_back("channel_bandwidth"sv, &settings_.channel_bandwidth);
+    }
+
+    // Receiver model settings.
+    if (flags_enabled(mode, Mode::RX)) {
+        bindings_.emplace_back("rx_frequency"sv, &settings_.rx_frequency);
+        bindings_.emplace_back("lna"sv, &settings_.lna);
+        bindings_.emplace_back("vga"sv, &settings_.vga);
+        bindings_.emplace_back("rx_amp"sv, &settings_.rx_amp);
+        bindings_.emplace_back("modulation"sv, &settings_.modulation);
+        bindings_.emplace_back("am_config_index"sv, &settings_.am_config_index);
+        bindings_.emplace_back("nbfm_config_index"sv, &settings_.nbfm_config_index);
+        bindings_.emplace_back("wfm_config_index"sv, &settings_.wfm_config_index);
+        bindings_.emplace_back("squelch"sv, &settings_.squelch);
+    }
+
+    // Common model settings.
+    bindings_.emplace_back("baseband_bandwidth"sv, &settings_.baseband_bandwidth);
+    bindings_.emplace_back("sampling_rate"sv, &settings_.sampling_rate);
+    bindings_.emplace_back("step"sv, &settings_.step);
+    bindings_.emplace_back("volume"sv, &settings_.volume);
+
+    // RadioState should have initialized default radio parameters before this function;
+    // copy them to settings_ before checking settings .ini file (in case the file doesn't exist
+    // or doesn't include all parameters). Settings in the file can overwrite all, or a subset of parameters.
+    copy_from_radio_model(settings_);
+
+    loaded_ = load_settings(app_name_, bindings_);
+
+    // Only copy to the radio if load was successful.
+    if (loaded_)
+        copy_to_radio_model(settings_);
+}
+
+SettingsManager::~SettingsManager() {
+    copy_from_radio_model(settings_);
+
+    save_settings(app_name_, bindings_);
+}
+
+}  // namespace app_settings
@@ -2,6 +2,7 @@
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 * Copyright (C) 2022 Arjan Onwezen
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -27,53 +28,167 @@
 #include <cstddef>
 #include <cstdint>
 #include <string>
+#include <string_view>
+#include <utility>
+#include <variant>

 #include "file.hpp"
+#include "max283x.hpp"
 #include "string_format.hpp"

-namespace std {
-class app_settings {
-   public:
-#define SETTINGS_OK 0               // settings found
-#define SETTINGS_UNABLE_TO_LOAD -1  // settings (file) not found
-#define SETTINGS_UNABLE_TO_SAVE -2  // unable to save settings
-#define SETTINGS_DISABLED -3        // load/save settings disabled in settings
+// Folder to store app settings, pmem_fileflag, and date_fileflag
+#define SETTINGS_DIR u"/SETTINGS"

-    struct AppSettings {
-        uint32_t baseband_bandwidth;
-        uint32_t channel_bandwidth;
-        uint8_t lna;
-        uint8_t modulation;
-        uint8_t rx_amp;
-        uint32_t rx_frequency;
-        uint32_t sampling_rate;
-        uint8_t tx_amp;
-        uint32_t tx_frequency;
-        uint8_t tx_gain;
-        uint8_t vga;
-        uint32_t step;
-        uint8_t am_config_index;
-        uint8_t nbfm_config_index;
-        uint8_t wfm_config_index;
-        uint8_t squelch;
+// Bring in the string_view literal.
+using std::literals::operator""sv;
+
+#define COMMON_APP_SETTINGS_COUNT 19
+
+/* Represents a named setting bound to a variable instance. */
+/* Using void* instead of std::variant, because variant is a pain to dispatch over. */
+class BoundSetting {
+    /* The type of bound setting. */
+    enum class SettingType : uint8_t {
+        I64,
+        I32,
+        U32,
+        U8,
+        String,
+        Bool,
    };

-    int load(std::string application, AppSettings* settings);
-    int save(std::string application, AppSettings* settings);
+   public:
+    BoundSetting(std::string_view name, int64_t* target)
+        : name_{name}, target_{target}, type_{SettingType::I64} {}
+
+    BoundSetting(std::string_view name, int32_t* target)
+        : name_{name}, target_{target}, type_{SettingType::I32} {}
+
+    BoundSetting(std::string_view name, uint32_t* target)
+        : name_{name}, target_{target}, type_{SettingType::U32} {}
+
+    BoundSetting(std::string_view name, uint8_t* target)
+        : name_{name}, target_{target}, type_{SettingType::U8} {}
+
+    BoundSetting(std::string_view name, std::string* target)
+        : name_{name}, target_{target}, type_{SettingType::String} {}
+
+    BoundSetting(std::string_view name, bool* target)
+        : name_{name}, target_{target}, type_{SettingType::Bool} {}
+
+    std::string_view name() const { return name_; }
+    void parse(std::string_view value);
+    void write(File& file) const;

   private:
-#define MAX_FILE_CONTENT_SIZE 1000
+    template <typename T>
+    constexpr auto& as() const {
+        return *reinterpret_cast<T*>(target_);
+    }

-    char file_content[MAX_FILE_CONTENT_SIZE] = {};
-    std::string file_path = "";
-    std::string folder = "SETTINGS";
-    int rc = SETTINGS_OK;
-    File settings_file{};
-    long long int setting_value{};
+    std::string_view name_;
+    void* target_;
+    SettingType type_;
+};

-    long long int read_long_long(char* file_content, const char* setting_text);
+using SettingBindings = std::vector<BoundSetting>;

-};  // class app_settings
-}  // namespace std
+/* RAII wrapper for Settings that loads/saves to the SD card. */
+class SettingsStore {
+   public:
+    SettingsStore(std::string_view store_name, SettingBindings bindings);
+    ~SettingsStore();
+
+    void reload();
+    void save() const;
+
+   private:
+    std::string_view store_name_;
+    SettingBindings bindings_;
+};
+
+bool load_settings(std::string_view store_name, SettingBindings& bindings);
+bool save_settings(std::string_view store_name, const SettingBindings& bindings);
+
+namespace app_settings {
+
+enum class Mode : uint8_t {
+    RX = 0x01,
+    TX = 0x02,
+    RX_TX = 0x03,  // Both TX/RX
+};
+
+enum class Options {
+    None = 0x0000,
+
+    /* Don't use target frequency from app settings. */
+    UseGlobalTargetFrequency = 0x0001,
+};
+
+/* NB: See RX/TX model headers for default values. */
+struct AppSettings {
+    Mode mode = Mode::RX;
+    Options options = Options::None;
+    uint32_t baseband_bandwidth = max283x::filter::bandwidth_minimum;
+    uint32_t sampling_rate = 3072000;  // Good for 48k audio.
+    uint8_t lna = 32;
+    uint8_t vga = 32;
+    uint8_t rx_amp = 0;
+    uint8_t tx_amp = 0;
+    uint8_t tx_gain = 35;
+    uint32_t channel_bandwidth = 1;
+    uint32_t rx_frequency;
+    uint32_t tx_frequency;
+    uint32_t step = 25000;
+    uint8_t modulation = 1;  // NFM
+    uint8_t am_config_index = 0;
+    uint8_t nbfm_config_index = 0;
+    uint8_t wfm_config_index = 0;
+    uint8_t squelch = 80;
+    uint8_t volume;
+    // NOTE: update COMMON_APP_SETTINGS_COUNT when adding to this
+};
+
+/* Copies common values to the receiver/transmitter models. */
+void copy_to_radio_model(const AppSettings& settings);
+
+/* Copies common values from the receiver/transmitter models. */
+void copy_from_radio_model(AppSettings& settings);
+
+/* RAII wrapper for automatically loading and saving settings for an app.
+ * "Additional" settings are always loaded, but radio settings are conditionally
+ * saved/loaded if the global app settings options are enabled.
+ * NB: This should be added to a class before any LNA/VGA controls so that
+ * the receiver/transmitter models are set before the control ctors run. */
+class SettingsManager {
+   public:
+    SettingsManager(std::string_view app_name, Mode mode, Options options = Options::None);
+    SettingsManager(std::string_view app_name, Mode mode, SettingBindings additional_settings);
+    SettingsManager(std::string_view app_name, Mode mode, Options options, SettingBindings additional_settings);
+    ~SettingsManager();
+
+    SettingsManager(const SettingsManager&) = delete;
+    SettingsManager& operator=(const SettingsManager&) = delete;
+    SettingsManager(SettingsManager&&) = delete;
+    SettingsManager& operator=(SettingsManager&&) = delete;
+
+    /* True if settings were successfully loaded from file. */
+    bool loaded() const { return loaded_; }
+
+    Mode mode() const { return settings_.mode; }
+
+    AppSettings& raw() { return settings_; }
+
+   private:
+    std::string_view app_name_;
+    AppSettings settings_;
+    SettingBindings bindings_;
+    bool loaded_;
+};
+
+}  // namespace app_settings
+
+ENABLE_FLAGS_OPERATORS(app_settings::Mode);
+ENABLE_FLAGS_OPERATORS(app_settings::Options);

 #endif /*__APP_SETTINGS_H__*/
@@ -55,12 +55,8 @@ void ACARSLogger::log_raw_data(const acars::Packet& packet, const uint32_t frequ

 namespace ui {

-void ACARSAppView::update_freq(rf::Frequency f) {
-    set_target_frequency(f);
-    portapack::persistent_memory::set_tuned_frequency(f);  // Maybe not ?
-}
-
-ACARSAppView::ACARSAppView(NavigationView& nav) {
+ACARSAppView::ACARSAppView(NavigationView& nav)
+    : nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_acars);

    add_children({&rssi,
@@ -72,25 +68,8 @@ ACARSAppView::ACARSAppView(NavigationView& nav) {
                  &check_log,
                  &console});

-    receiver_model.set_sampling_rate(2457600);
-    receiver_model.set_baseband_bandwidth(1750000);
    receiver_model.enable();

-    field_frequency.set_value(receiver_model.tuning_frequency());
-    update_freq(receiver_model.tuning_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_change = [this](rf::Frequency f) {
-        update_freq(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            update_freq(f);
-            field_frequency.set_value(f);
-        };
-    };
-
    check_log.set_value(logging);
    check_log.on_select = [this](Checkbox&, bool v) {
        logging = v;
@@ -132,16 +111,7 @@ void ACARSAppView::on_packet(const acars::Packet& packet) {

    // Log raw data whatever it contains
    if (logger && logging)
-        logger->log_raw_data(packet, target_frequency());
-}
-
-void ACARSAppView::set_target_frequency(const uint32_t new_value) {
-    target_frequency_ = new_value;
-    receiver_model.set_tuning_frequency(new_value);
-}
-
-uint32_t ACARSAppView::target_frequency() const {
-    return target_frequency_;
+        logger->log_raw_data(packet, receiver_model.target_frequency());
 }

 } /* namespace ui */
@@ -23,10 +23,12 @@
 #ifndef __ACARS_APP_H__
 #define __ACARS_APP_H__

+#include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ui_widget.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "ui_rssi.hpp"
-
 #include "log_file.hpp"

 #include "acars_packet.hpp"
@@ -56,6 +58,15 @@ class ACARSAppView : public View {
    std::string title() const override { return "ACARS (WIP)"; };

   private:
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        131550000 /* frequency */,
+        1750000 /* bandwidth */,
+        2457600 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "rx_acars", app_settings::Mode::RX};
+
    bool logging{false};
    uint32_t packet_counter{0};

@@ -66,15 +77,13 @@ class ACARSAppView : public View {
    VGAGainField field_vga{
        {18 * 8, 0 * 16}};
    RSSI rssi{
-        {21 * 8, 0, 6 * 8, 4},
-    };
+        {21 * 8, 0, 6 * 8, 4}};
    Channel channel{
-        {21 * 8, 5, 6 * 8, 4},
-    };
+        {21 * 8, 5, 6 * 8, 4}};

-    FrequencyField field_frequency{
+    RxFrequencyField field_frequency{
        {0 * 8, 0 * 8},
-    };
+        nav_};
    Checkbox check_log{
        {22 * 8, 21},
        3,
@@ -86,15 +95,8 @@ class ACARSAppView : public View {

    std::unique_ptr<ACARSLogger> logger{};

-    uint32_t target_frequency_{};
-
-    void update_freq(rf::Frequency f);
-
    void on_packet(const acars::Packet& packet);

-    uint32_t target_frequency() const;
-    void set_target_frequency(const uint32_t new_value);
-
    MessageHandlerRegistration message_handler_packet{
        Message::ID::ACARSPacket,
        [this](Message* const p) {
@@ -283,8 +283,8 @@ AISRecentEntryDetailView::AISRecentEntryDetailView(NavigationView& nav) {
    });

    button_done.on_select = [this](const ui::Button&) {
-        if (this->on_close) {
-            this->on_close();
+        if (on_close) {
+            on_close();
        }
    };

@@ -380,33 +380,20 @@ AISAppView::AISAppView(NavigationView& nav)
        &recent_entry_detail_view,
    });

-    // load app settings
-    auto rc = settings.load("rx_ais", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-        target_frequency_ = app_settings.rx_frequency;
-    } else
-        target_frequency_ = initial_target_frequency;
-
    recent_entry_detail_view.hidden(true);

-    receiver_model.set_tuning_frequency(tuning_frequency());
-    receiver_model.set_sampling_rate(sampling_rate);
-    receiver_model.set_baseband_bandwidth(baseband_bandwidth);
    receiver_model.enable();

    options_channel.on_change = [this](size_t, OptionsField::value_t v) {
-        this->on_frequency_changed(v);
+        receiver_model.set_target_frequency(v);
    };
-    options_channel.set_by_value(target_frequency());
+    options_channel.set_by_value(receiver_model.target_frequency());

    recent_entries_view.on_select = [this](const AISRecentEntry& entry) {
-        this->on_show_detail(entry);
+        on_show_detail(entry);
    };
    recent_entry_detail_view.on_close = [this]() {
-        this->on_show_list();
+        on_show_list();
    };

    logger = std::make_unique<AISLogger>();
@@ -416,12 +403,7 @@ AISAppView::AISAppView(NavigationView& nav)
 }

 AISAppView::~AISAppView() {
-    // save app settings
-    app_settings.rx_frequency = target_frequency_;
-    settings.save("rx_ais", &app_settings);
-
    receiver_model.disable();
-
    baseband::shutdown();
 }

@@ -465,21 +447,4 @@ void AISAppView::on_show_detail(const AISRecentEntry& entry) {
    recent_entry_detail_view.focus();
 }

-void AISAppView::on_frequency_changed(const uint32_t new_target_frequency) {
-    set_target_frequency(new_target_frequency);
-}
-
-void AISAppView::set_target_frequency(const uint32_t new_value) {
-    target_frequency_ = new_value;
-    receiver_model.set_tuning_frequency(tuning_frequency());
-}
-
-uint32_t AISAppView::target_frequency() const {
-    return target_frequency_;
-}
-
-uint32_t AISAppView::tuning_frequency() const {
-    return target_frequency() - (sampling_rate / 4);
-}
-
 } /* namespace ui */
@@ -34,6 +34,7 @@

 #include "log_file.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ais_packet.hpp"

 #include "lpc43xx_cpp.hpp"
@@ -154,9 +155,6 @@ class AISAppView : public View {
    ~AISAppView();

    void set_parent_rect(const Rect new_parent_rect) override;
-
-    // Prevent painting of region covered entirely by a child.
-    // TODO: Add flag to View that specifies view does not need to be cleared before painting.
    void paint(Painter&) override{};

    void focus() override;
@@ -164,13 +162,13 @@ class AISAppView : public View {
    std::string title() const override { return "AIS RX"; };

   private:
-    static constexpr uint32_t initial_target_frequency = 162025000;
-    static constexpr uint32_t sampling_rate = 2457600;
-    static constexpr uint32_t baseband_bandwidth = 1750000;
-
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    RxRadioState radio_state_{
+        162025000 /* frequency*/,
+        1750000 /* bandwidth */,
+        2457600 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "rx_ais", app_settings::Mode::RX};

    NavigationView& nav_;

@@ -225,18 +223,9 @@ class AISAppView : public View {
            }
        }};

-    uint32_t target_frequency_ = initial_target_frequency;
-
    void on_packet(const ais::Packet& packet);
    void on_show_list();
    void on_show_detail(const AISRecentEntry& entry);
-
-    void on_frequency_changed(const uint32_t new_target_frequency);
-
-    uint32_t target_frequency() const;
-    void set_target_frequency(const uint32_t new_value);
-
-    uint32_t tuning_frequency() const;
 };

 } /* namespace ui */
@@ -22,21 +22,17 @@

 #include "analog_audio_app.hpp"

+#include "audio.hpp"
 #include "baseband_api.hpp"
-
+#include "file.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
-using namespace portapack;
-using namespace tonekey;
-
-#include "audio.hpp"
-#include "file.hpp"
-
+#include "string_format.hpp"
+#include "ui_freqman.hpp"
 #include "utility.hpp"

-#include "string_format.hpp"
-
-#include "freqman.hpp"
+using namespace portapack;
+using namespace tonekey;

 namespace ui {

@@ -45,8 +41,8 @@ namespace ui {
 static const Style& style_options_group = Styles::bg_blue;

 AMOptionsView::AMOptionsView(
-    const Rect parent_rect,
-    const Style* const style)
+    Rect parent_rect,
+    const Style* style)
    : View{parent_rect} {
    set_style(style);

@@ -65,8 +61,8 @@ AMOptionsView::AMOptionsView(
 /* NBFMOptionsView *******************************************************/

 NBFMOptionsView::NBFMOptionsView(
-    const Rect parent_rect,
-    const Style* const style)
+    Rect parent_rect,
+    const Style* style)
    : View{parent_rect} {
    set_style(style);

@@ -90,8 +86,8 @@ NBFMOptionsView::NBFMOptionsView(
 /* WFMOptionsView *******************************************************/

 WFMOptionsView::WFMOptionsView(
-    const Rect parent_rect,
-    const Style* const style)
+    Rect parent_rect,
+    const Style* style)
    : View{parent_rect} {
    set_style(style);

@@ -111,8 +107,8 @@ WFMOptionsView::WFMOptionsView(

 SPECOptionsView::SPECOptionsView(
    AnalogAudioView* view,
-    const Rect parent_rect,
-    const Style* const style)
+    Rect parent_rect,
+    const Style* style)
    : View{parent_rect} {
    set_style(style);

@@ -137,6 +133,9 @@ SPECOptionsView::SPECOptionsView(
 AnalogAudioView::AnalogAudioView(
    NavigationView& nav)
    : nav_(nav) {
+    // A baseband image _must_ be running before add waterfall view.
+    baseband::run_image(portapack::spi_flash::image_tag_wideband_spectrum);
+
    add_children({&rssi,
                  &channel,
                  &audio,
@@ -149,35 +148,9 @@ AnalogAudioView::AnalogAudioView(
                  &record_view,
                  &waterfall});

-    // Set on_change before initialising the field
-    field_frequency.on_change = [this](rf::Frequency f) {
-        this->on_tuning_frequency_changed(f);
-    };
-
-    // load app settings
-    auto rc = settings.load("rx_audio", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        receiver_model.set_rf_amp(app_settings.rx_amp);
-        // field_frequency.set_value(app_settings.rx_frequency);
-        receiver_model.set_configuration_without_init(static_cast<ReceiverModel::Mode>(app_settings.modulation), app_settings.step, app_settings.am_config_index, app_settings.nbfm_config_index, app_settings.wfm_config_index, app_settings.squelch);
-    }
-    field_frequency.set_value(receiver_model.tuning_frequency());
-
    // Filename Datetime and Frequency
    record_view.set_filename_date_frequency(true);

-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->on_tuning_frequency_changed(f);
-            this->field_frequency.set_value(f);
-        };
-    };
-
    field_frequency.on_show_options = [this]() {
        this->on_show_options_frequency();
    };
@@ -190,9 +163,12 @@ AnalogAudioView::AnalogAudioView(
        this->on_show_options_rf_gain();
    };

-    const auto modulation = receiver_model.modulation();
-    options_modulation.set_by_value(toUType(modulation));
+    auto modulation = receiver_model.modulation();
+    // This app doesn't handle "Capture" mode.
+    if (modulation > ReceiverModel::Mode::SpectrumAnalysis)
+        modulation = ReceiverModel::Mode::SpectrumAnalysis;

+    options_modulation.set_by_value(toUType(modulation));
    options_modulation.on_change = [this](size_t, OptionsField::value_t v) {
        this->on_modulation_changed(static_cast<ReceiverModel::Mode>(v));
    };
@@ -205,13 +181,23 @@ AnalogAudioView::AnalogAudioView(
    };

    waterfall.on_select = [this](int32_t offset) {
-        field_frequency.set_value(receiver_model.tuning_frequency() + offset);
+        field_frequency.set_value(receiver_model.target_frequency() + offset);
    };

    audio::output::start();

-    update_modulation(static_cast<ReceiverModel::Mode>(modulation));
-    on_modulation_changed(static_cast<ReceiverModel::Mode>(modulation));
+    // This call starts the correct baseband image to run
+    // and sets the radio up as necessary for the given modulation.
+    on_modulation_changed(modulation);
+}
+
+AnalogAudioView::AnalogAudioView(
+    NavigationView& nav,
+    ReceiverModel::settings_t override)
+    : AnalogAudioView(nav) {
+    // TODO: Which other settings make sense to override?
+    on_frequency_step_changed(override.frequency_step);
+    options_modulation.set_by_value(toUType(override.mode));
 }

 size_t AnalogAudioView::get_spec_bw_index() {
@@ -238,40 +224,15 @@ void AnalogAudioView::set_spec_trigger(uint16_t trigger) {
 }

 AnalogAudioView::~AnalogAudioView() {
-    // save app settings
-    app_settings.rx_frequency = field_frequency.value();
-    app_settings.lna = receiver_model.lna();
-    app_settings.vga = receiver_model.vga();
-    app_settings.rx_amp = receiver_model.rf_amp();
-    app_settings.step = receiver_model.frequency_step();
-    app_settings.modulation = (uint8_t)receiver_model.modulation();
-    app_settings.am_config_index = receiver_model.am_configuration();
-    app_settings.nbfm_config_index = receiver_model.nbfm_configuration();
-    app_settings.wfm_config_index = receiver_model.wfm_configuration();
-    app_settings.squelch = receiver_model.squelch_level();
-    settings.save("rx_audio", &app_settings);
-
-    // TODO: Manipulating audio codec here, and in ui_receiver.cpp. Good to do
-    // both?
    audio::output::stop();
-
-    receiver_model.set_sampling_rate(3072000);  // Just a hack to avoid hanging other apps if the last modulation was SPEC
    receiver_model.disable();
-
    baseband::shutdown();
 }

-void AnalogAudioView::on_hide() {
-    // TODO: Terrible kludge because widget system doesn't notify Waterfall that
-    // it's being shown or hidden.
-    waterfall.on_hide();
-    View::on_hide();
-}
-
-void AnalogAudioView::set_parent_rect(const Rect new_parent_rect) {
+void AnalogAudioView::set_parent_rect(Rect new_parent_rect) {
    View::set_parent_rect(new_parent_rect);

-    const ui::Rect waterfall_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};
+    ui::Rect waterfall_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};
    waterfall.set_parent_rect(waterfall_rect);
 }

@@ -279,21 +240,19 @@ void AnalogAudioView::focus() {
    field_frequency.focus();
 }

-void AnalogAudioView::on_tuning_frequency_changed(rf::Frequency f) {
-    receiver_model.set_tuning_frequency(f);
-}
-
 void AnalogAudioView::on_baseband_bandwidth_changed(uint32_t bandwidth_hz) {
    receiver_model.set_baseband_bandwidth(bandwidth_hz);
 }

-void AnalogAudioView::on_modulation_changed(const ReceiverModel::Mode modulation) {
-    // TODO: Terrible kludge because widget system doesn't notify Waterfall that
-    // it's being shown or hidden.
-    waterfall.on_hide();
+void AnalogAudioView::on_modulation_changed(ReceiverModel::Mode modulation) {
+    // This app doesn't know what to do with "Capture" mode.
+    if (modulation > ReceiverModel::Mode::SpectrumAnalysis)
+        modulation = ReceiverModel::Mode::SpectrumAnalysis;
+
+    baseband::spectrum_streaming_stop();
    update_modulation(modulation);
    on_show_options_modulation();
-    waterfall.on_show();
+    baseband::spectrum_streaming_start();
 }

 void AnalogAudioView::remove_options_widget() {
@@ -345,7 +304,7 @@ void AnalogAudioView::on_show_options_rf_gain() {
 void AnalogAudioView::on_show_options_modulation() {
    std::unique_ptr<Widget> widget;

-    const auto modulation = static_cast<ReceiverModel::Mode>(receiver_model.modulation());
+    const auto modulation = receiver_model.modulation();
    switch (modulation) {
        case ReceiverModel::Mode::AMAudio:
            widget = std::make_unique<AMOptionsView>(options_view_rect, &style_options_group);
@@ -372,6 +331,7 @@ void AnalogAudioView::on_show_options_modulation() {
            break;

        default:
+            chDbgPanic("Unhandled Mode");
            break;
    }

@@ -388,7 +348,7 @@ void AnalogAudioView::on_reference_ppm_correction_changed(int32_t v) {
    persistent_memory::set_correction_ppb(v * 1000);
 }

-void AnalogAudioView::update_modulation(const ReceiverModel::Mode modulation) {
+void AnalogAudioView::update_modulation(ReceiverModel::Mode modulation) {
    audio::output::mute();
    record_view.stop();

@@ -409,7 +369,8 @@ void AnalogAudioView::update_modulation(const ReceiverModel::Mode modulation) {
            image_tag = portapack::spi_flash::image_tag_wideband_spectrum;
            break;
        default:
-            return;
+            chDbgPanic("Unhandled Mode");
+            break;
    }

    baseband::run_image(image_tag);
@@ -448,25 +409,8 @@ void AnalogAudioView::update_modulation(const ReceiverModel::Mode modulation) {
    }
 }

-void AnalogAudioView::handle_coded_squelch(const uint32_t value) {
-    float diff, min_diff = value;
-    size_t min_idx{0};
-    size_t c;
-
-    // Find nearest match
-    for (c = 0; c < tone_keys.size(); c++) {
-        diff = abs(((float)value / 100.0) - tone_keys[c].second);
-        if (diff < min_diff) {
-            min_idx = c;
-            min_diff = diff;
-        }
-    }
-
-    // Arbitrary confidence threshold
-    if (min_diff < 40)
-        text_ctcss.set("CTCSS " + tone_keys[min_idx].first);
-    else
-        text_ctcss.set("???");
+void AnalogAudioView::handle_coded_squelch(uint32_t value) {
+    text_ctcss.set(tone_key_string_by_value(value, text_ctcss.parent_rect().width() / 8));
 }

 } /* namespace ui */
@@ -26,17 +26,19 @@
 #include "receiver_model.hpp"

 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "ui_spectrum.hpp"
 #include "ui_record_view.hpp"
 #include "ui_styles.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "tone_key.hpp"

 namespace ui {

 class AMOptionsView : public View {
   public:
-    AMOptionsView(const Rect parent_rect, const Style* const style);
+    AMOptionsView(Rect parent_rect, const Style* style);

   private:
    Text label_config{
@@ -46,15 +48,15 @@ class AMOptionsView : public View {

    OptionsField options_config{
        {3 * 8, 0 * 16},
-        6,  // number of blanking characters
+        6,  // Max option length
        {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
        }};
 };

 class NBFMOptionsView : public View {
   public:
-    NBFMOptionsView(const Rect parent_rect, const Style* const style);
+    NBFMOptionsView(Rect parent_rect, const Style* style);

   private:
    Text label_config{
@@ -63,16 +65,16 @@ class NBFMOptionsView : public View {
    };
    OptionsField options_config{
        {3 * 8, 0 * 16},
-        4,
+        3,  // Max option length
        {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
        }};

    Text text_squelch{
-        {9 * 8, 0 * 16, 8 * 8, 1 * 16},
+        {7 * 8, 0 * 16, 8 * 8, 1 * 16},
        "SQ   /99"};
    NumberField field_squelch{
-        {12 * 8, 0 * 16},
+        {10 * 8, 0 * 16},
        2,
        {0, 99},
        1,
@@ -82,7 +84,7 @@ class NBFMOptionsView : public View {

 class WFMOptionsView : public View {
   public:
-    WFMOptionsView(const Rect parent_rect, const Style* const style);
+    WFMOptionsView(Rect parent_rect, const Style* style);

   private:
    Text label_config{
@@ -91,9 +93,9 @@ class WFMOptionsView : public View {
    };
    OptionsField options_config{
        {3 * 8, 0 * 16},
-        4,
+        4,  // Max option length
        {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
        }};
 };

@@ -101,7 +103,7 @@ class AnalogAudioView;

 class SPECOptionsView : public View {
   public:
-    SPECOptionsView(AnalogAudioView* view, const Rect parent_rect, const Style* const style);
+    SPECOptionsView(AnalogAudioView* view, Rect parent_rect, const Style* style);

   private:
    Text label_config{
@@ -136,12 +138,10 @@ class SPECOptionsView : public View {
 class AnalogAudioView : public View {
   public:
    AnalogAudioView(NavigationView& nav);
+    AnalogAudioView(NavigationView& nav, ReceiverModel::settings_t override);
    ~AnalogAudioView();

-    void on_hide() override;
-
-    void set_parent_rect(const Rect new_parent_rect) override;
-
+    void set_parent_rect(Rect new_parent_rect) override;
    void focus() override;

    std::string title() const override { return "Audio RX"; };
@@ -155,9 +155,11 @@ class AnalogAudioView : public View {
   private:
    static constexpr ui::Dim header_height = 3 * 16;

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    NavigationView& nav_;
+    RxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "rx_audio", app_settings::Mode::RX,
+        app_settings::Options::UseGlobalTargetFrequency};

    const Rect options_view_rect{0 * 8, 1 * 16, 30 * 8, 1 * 16};
    const Rect nbfm_view_rect{0 * 8, 1 * 16, 18 * 8, 1 * 16};
@@ -166,24 +168,18 @@ class AnalogAudioView : public View {
    uint32_t spec_bw = 20000000;
    uint16_t spec_trigger = 63;

-    NavigationView& nav_;
-    // bool exit_on_squelch { false };
-
    RSSI rssi{
-        {21 * 8, 0, 6 * 8, 4},
-    };
+        {21 * 8, 0, 6 * 8, 4}};

    Channel channel{
-        {21 * 8, 5, 6 * 8, 4},
-    };
+        {21 * 8, 5, 6 * 8, 4}};

    Audio audio{
-        {21 * 8, 10, 6 * 8, 4},
-    };
+        {21 * 8, 10, 6 * 8, 4}};

-    FrequencyField field_frequency{
+    RxFrequencyField field_frequency{
        {5 * 8, 0 * 16},
-    };
+        nav_};

    LNAGainField field_lna{
        {15 * 8, 0 * 16}};
@@ -205,7 +201,7 @@ class AnalogAudioView : public View {
        {28 * 8, 0 * 16}};

    Text text_ctcss{
-        {19 * 8, 1 * 16, 11 * 8, 1 * 16},
+        {16 * 8, 1 * 16, 14 * 8, 1 * 16},
        ""};

    std::unique_ptr<Widget> options_widget{};
@@ -218,37 +214,26 @@ class AnalogAudioView : public View {
        4096,
        4};

-    spectrum::WaterfallWidget waterfall{true};
+    spectrum::WaterfallView waterfall{true};

-    void on_tuning_frequency_changed(rf::Frequency f);
    void on_baseband_bandwidth_changed(uint32_t bandwidth_hz);
-    void on_modulation_changed(const ReceiverModel::Mode modulation);
+    void on_modulation_changed(ReceiverModel::Mode modulation);
    void on_show_options_frequency();
    void on_show_options_rf_gain();
    void on_show_options_modulation();
    void on_frequency_step_changed(rf::Frequency f);
    void on_reference_ppm_correction_changed(int32_t v);
-    void on_edit_frequency();

    void remove_options_widget();
    void set_options_widget(std::unique_ptr<Widget> new_widget);

-    void update_modulation(const ReceiverModel::Mode modulation);
+    void update_modulation(ReceiverModel::Mode modulation);

-    // void squelched();
-    void handle_coded_squelch(const uint32_t value);
-
-    /*MessageHandlerRegistration message_handler_squelch_signal {
-                Message::ID::RequestSignal,
-                [this](const Message* const p) {
-                        (void)p;
-                        this->squelched();
-                }
-        };*/
+    void handle_coded_squelch(uint32_t value);

    MessageHandlerRegistration message_handler_coded_squelch{
        Message::ID::CodedSquelch,
-        [this](const Message* const p) {
+        [this](const Message* p) {
            const auto message = *reinterpret_cast<const CodedSquelchMessage*>(p);
            this->handle_coded_squelch(message.value);
        }};
@@ -0,0 +1,331 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ble_comm_app.hpp"
+
+#include "ui_modemsetup.hpp"
+
+#include "modems.hpp"
+#include "audio.hpp"
+#include "rtc_time.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "ui_text.hpp"
+
+using namespace portapack;
+using namespace modems;
+
+void BLECommLogger::log_raw_data(const std::string& data) {
+    log_file.write_entry(data);
+}
+
+namespace ui {
+static std::uint64_t get_freq_by_channel_number(uint8_t channel_number) {
+    uint64_t freq_hz;
+
+    switch (channel_number) {
+        case 37:
+            freq_hz = 2'402'000'000ull;
+            break;
+        case 38:
+            freq_hz = 2'426'000'000ull;
+            break;
+        case 39:
+            freq_hz = 2'480'000'000ull;
+            break;
+        case 0 ... 10:
+            freq_hz = 2'404'000'000ull + channel_number * 2'000'000ull;
+            break;
+        case 11 ... 36:
+            freq_hz = 2'428'000'000ull + (channel_number - 11) * 2'000'000ull;
+            break;
+        default:
+            freq_hz = UINT64_MAX;
+    }
+
+    return freq_hz;
+}
+
+void BLECommView::focus() {
+    options_channel.focus();
+}
+
+BLECommView::BLECommView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({&rssi,
+                  &channel,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &options_channel,
+                  &field_frequency,
+                  &label_send_adv,
+                  &button_send_adv,
+                  &check_log,
+                  &label_packets_sent,
+                  &text_packets_sent,
+                  &console});
+
+    field_frequency.set_step(0);
+
+    button_send_adv.on_select = [this](ImageButton&) {
+        this->toggle();
+    };
+
+    check_log.set_value(logging);
+
+    check_log.on_select = [this](Checkbox&, bool v) {
+        str_log = "";
+        logging = v;
+
+        if (logger && logging)
+            logger->append(LOG_ROOT_DIR "/BLELOG_" + to_string_timestamp(rtc_time::now()) + ".TXT");
+    };
+
+    options_channel.on_change = [this](size_t, int32_t i) {
+        // If we selected Auto don't do anything and Auto will handle changing.
+        if (i == 40) {
+            auto_channel = true;
+            return;
+        } else {
+            auto_channel = false;
+        }
+
+        field_frequency.set_value(get_freq_by_channel_number(i));
+        channel_number_rx = i;
+        channel_number_tx = i;
+    };
+
+    options_channel.set_selected_index(3, true);
+
+    logger = std::make_unique<BLECommLogger>();
+
+    // Generate new random Mac Address upon each new startup.
+    generateRandomMacAddress(randomMac);
+
+    // Setup Initial Advertise Packet.
+    advertisePacket = build_adv_packet();
+}
+
+void BLECommView::set_parent_rect(const Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+    const Rect content_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};
+    console.set_parent_rect(content_rect);
+}
+
+BLECommView::~BLECommView() {
+    receiver_model.disable();
+    transmitter_model.disable();
+    baseband::shutdown();
+}
+
+bool BLECommView::in_tx_mode() const {
+    return (bool)is_running_tx;
+}
+
+void BLECommView::toggle() {
+    if (in_tx_mode()) {
+        sendAdvertisement(false);
+    } else {
+        sendAdvertisement(true);
+    }
+}
+
+BLETxPacket BLECommView::build_adv_packet() {
+    BLETxPacket bleTxPacket;
+    memset(&bleTxPacket, 0, sizeof(BLETxPacket));
+
+    std::string dataString = "11094861636b524620506f7274617061636b";
+
+    strncpy(bleTxPacket.macAddress, randomMac, 12);
+    strncpy(bleTxPacket.advertisementData, dataString.c_str(), dataString.length());
+
+    // Duty cycle of 40% per 100ms advertisment periods.
+    strncpy(bleTxPacket.packetCount, "80", 3);
+    bleTxPacket.packet_count = 80;
+
+    bleTxPacket.packetType = PKT_TYPE_DISCOVERY;
+
+    return bleTxPacket;
+}
+
+void BLECommView::sendAdvertisement(bool enable) {
+    if (enable) {
+        startTx(advertisePacket);
+        is_adv = true;
+    } else {
+        is_adv = false;
+        stopTx();
+    }
+}
+
+void BLECommView::startTx(BLETxPacket packetToSend) {
+    int randomChannel = channel_number_tx;
+
+    if (auto_channel) {
+        int min = 37;
+        int max = 39;
+
+        randomChannel = min + std::rand() % (max - min + 1);
+
+        field_frequency.set_value(get_freq_by_channel_number(randomChannel));
+    }
+
+    if (!in_tx_mode()) {
+        switch_rx_tx(false);
+
+        currentPacket = packetToSend;
+        packet_counter = currentPacket.packet_count;
+
+        button_send_adv.set_bitmap(&bitmap_stop);
+        baseband::set_btletx(randomChannel, currentPacket.macAddress, currentPacket.advertisementData, currentPacket.packetType);
+        transmitter_model.set_tx_gain(47);
+        transmitter_model.enable();
+
+        is_running_tx = true;
+    } else {
+        baseband::set_btletx(randomChannel, currentPacket.macAddress, currentPacket.advertisementData, currentPacket.packetType);
+    }
+
+    if ((packet_counter % 10) == 0) {
+        text_packets_sent.set(to_string_dec_uint(packet_counter));
+    }
+
+    is_sending = true;
+
+    packet_counter--;
+}
+
+void BLECommView::stopTx() {
+    button_send_adv.set_bitmap(&bitmap_play);
+    text_packets_sent.set(to_string_dec_uint(packet_counter));
+
+    switch_rx_tx(true);
+
+    baseband::set_btlerx(channel_number_rx);
+    receiver_model.enable();
+
+    is_running_tx = false;
+}
+
+void BLECommView::switch_rx_tx(bool inRxMode) {
+    if (inRxMode) {
+        // Start Rx
+        transmitter_model.disable();
+        baseband::shutdown();
+        baseband::run_image(portapack::spi_flash::image_tag_btle_rx);
+    } else {
+        // Start Tx
+        receiver_model.disable();
+        baseband::shutdown();
+        baseband::run_image(portapack::spi_flash::image_tag_btle_tx);
+    }
+}
+
+void BLECommView::on_data(BlePacketData* packet) {
+    parse_received_packet(packet, (ADV_PDU_TYPE)packet->type);
+}
+
+// called each 1/60th of second, so 6 = 100ms
+void BLECommView::on_timer() {
+    // Send advertise burst only once every 100ms
+    if (++timer_counter == timer_period) {
+        timer_counter = 0;
+
+        if (!is_adv) {
+            sendAdvertisement(true);
+        }
+    }
+}
+
+void BLECommView::on_tx_progress(const bool done) {
+    if (done) {
+        if (in_tx_mode()) {
+            is_sending = false;
+
+            if (packet_counter == 0) {
+                if (is_adv) {
+                    sendAdvertisement(false);
+                } else {
+                    stopTx();
+                }
+            } else {
+                startTx(currentPacket);
+            }
+        }
+    }
+}
+
+void BLECommView::parse_received_packet(const BlePacketData* packet, ADV_PDU_TYPE pdu_type) {
+    std::string data_string;
+
+    int i;
+
+    for (i = 0; i < packet->dataLen; i++) {
+        data_string += to_string_hex(packet->data[i], 2);
+    }
+
+    receivedPacket.dbValue = packet->max_dB;
+    receivedPacket.timestamp = to_string_timestamp(rtc_time::now());
+    receivedPacket.dataString = data_string;
+
+    receivedPacket.packetData.type = packet->type;
+    receivedPacket.packetData.size = packet->size;
+    receivedPacket.packetData.dataLen = packet->dataLen;
+
+    receivedPacket.packetData.macAddress[0] = packet->macAddress[0];
+    receivedPacket.packetData.macAddress[1] = packet->macAddress[1];
+    receivedPacket.packetData.macAddress[2] = packet->macAddress[2];
+    receivedPacket.packetData.macAddress[3] = packet->macAddress[3];
+    receivedPacket.packetData.macAddress[4] = packet->macAddress[4];
+    receivedPacket.packetData.macAddress[5] = packet->macAddress[5];
+
+    receivedPacket.numHits++;
+
+    for (int i = 0; i < packet->dataLen; i++) {
+        receivedPacket.packetData.data[i] = packet->data[i];
+    }
+
+    if (pdu_type == SCAN_REQ || pdu_type == CONNECT_REQ) {
+        ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)packet->data;
+
+        std::reverse(directed_mac_data->A1, directed_mac_data->A1 + 6);
+        console.clear(true);
+        std::string str_console = "";
+        std::string pduTypeStr = "";
+
+        if (pdu_type == SCAN_REQ) {
+            pduTypeStr += "SCAN_REQ";
+        } else if (pdu_type == CONNECT_REQ) {
+            pduTypeStr += "CONNECT_REQ";
+        }
+
+        str_console += "PACKET TYPE:" + pduTypeStr + "\n";
+        str_console += "MY MAC:" + to_string_formatted_mac_address(randomMac) + "\n";
+        str_console += "SCAN MAC:" + to_string_mac_address(directed_mac_data->A1, 6, false) + "\n";
+        console.write(str_console);
+    }
+}
+
+} /* namespace ui */
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __BLE_COMM_APP_H__
+#define __BLE_COMM_APP_H__
+
+#include "ble_rx_app.hpp"
+#include "ble_tx_app.hpp"
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_transmitter.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "log_file.hpp"
+#include "utility.hpp"
+
+#include "recent_entries.hpp"
+
+class BLECommLogger {
+   public:
+    Optional<File::Error> append(const std::string& filename) {
+        return log_file.append(filename);
+    }
+
+    void log_raw_data(const std::string& data);
+
+   private:
+    LogFile log_file{};
+};
+
+namespace ui {
+class BLECommView : public View {
+   public:
+    BLECommView(NavigationView& nav);
+    ~BLECommView();
+
+    void set_parent_rect(const Rect new_parent_rect) override;
+    void paint(Painter&) override{};
+
+    void focus() override;
+
+    std::string title() const override { return "BLE Comm"; };
+
+   private:
+    BLETxPacket build_adv_packet();
+    void switch_rx_tx(bool inRxMode);
+    void startTx(BLETxPacket packetToSend);
+    void stopTx();
+    void toggle();
+    bool in_tx_mode() const;
+    void on_timer();
+    void on_data(BlePacketData* packetData);
+    void on_tx_progress(const bool done);
+    void parse_received_packet(const BlePacketData* packet, ADV_PDU_TYPE pdu_type);
+    void sendAdvertisement(bool enable);
+
+    NavigationView& nav_;
+
+    RxRadioState radio_state_rx_{
+        2'402'000'000 /* frequency */,
+        4'000'000 /* bandwidth */,
+        4'000'000 /* sampling rate */,
+        ReceiverModel::Mode::WidebandFMAudio};
+
+    TxRadioState radio_state_tx_{
+        2'402'000'000 /* frequency */,
+        4'000'000 /* bandwidth */,
+        4'000'000 /* sampling rate */
+    };
+
+    app_settings::SettingsManager settings_{
+        "BLE Comm Tx", app_settings::Mode::RX_TX};
+
+    uint8_t console_color{0};
+    uint32_t prev_value{0};
+
+    uint8_t channel_number_tx = 37;
+    uint8_t channel_number_rx = 37;
+    bool auto_channel = false;
+
+    char randomMac[13] = "010203040506";
+
+    bool is_running_tx = false;
+    bool is_sending = false;
+    bool is_adv = false;
+
+    int16_t timer_period{6};  // Delay each packet by 16ms.
+    int16_t timer_counter = 0;
+    int16_t timer_rx_counter = 0;
+    int16_t timer_rx_period{12};  // Poll Rx for at least 200ms. (TBD)
+
+    uint32_t packet_counter{0};
+    BLETxPacket advertisePacket{};
+    BLETxPacket currentPacket{};
+    BleRecentEntry receivedPacket{};
+
+    static constexpr auto header_height = 5 * 16;
+
+    OptionsField options_channel{
+        {0 * 8, 0 * 8},
+        5,
+        {{"Ch.37 ", 37},
+         {"Ch.38", 38},
+         {"Ch.39", 39},
+         {"Auto", 40}}};
+
+    RxFrequencyField field_frequency{
+        {6 * 8, 0 * 16},
+        nav_};
+
+    RFAmpField field_rf_amp{
+        {16 * 8, 0 * 16}};
+
+    LNAGainField field_lna{
+        {18 * 8, 0 * 16}};
+
+    VGAGainField field_vga{
+        {21 * 8, 0 * 16}};
+
+    RSSI rssi{
+        {24 * 8, 0, 6 * 8, 4}};
+
+    Channel channel{
+        {24 * 8, 5, 6 * 8, 4}};
+
+    Labels label_send_adv{
+        {{0 * 8, 2 * 8}, "Send Advertisement:", Color::light_grey()}};
+
+    ImageButton button_send_adv{
+        {21 * 8, 1 * 16, 10 * 8, 2 * 16},
+        &bitmap_play,
+        Color::green(),
+        Color::black()};
+
+    Checkbox check_log{
+        {24 * 8, 2 * 8},
+        3,
+        "Log",
+        true};
+
+    Labels label_packets_sent{
+        {{0 * 8, 4 * 8}, "Packets Left:", Color::light_grey()}};
+
+    Text text_packets_sent{
+        {13 * 8, 2 * 16, 12 * 8, 16},
+        "-"};
+
+    Console console{
+        {0, 4 * 16, 240, 240}};
+
+    std::string str_log{""};
+    bool logging{false};
+
+    std::unique_ptr<BLECommLogger> logger{};
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::BlePacket,
+        [this](Message* const p) {
+            const auto message = static_cast<const BLEPacketMessage*>(p);
+            this->on_data(message->packet);
+        }};
+
+    MessageHandlerRegistration message_handler_tx_progress{
+        Message::ID::TXProgress,
+        [this](const Message* const p) {
+            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
+            this->on_tx_progress(message.done);
+        }};
+
+    MessageHandlerRegistration message_handler_frame_sync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) {
+            this->on_timer();
+        }};
+};
+
+} /* namespace ui */
+
+#endif /*__UI_AFSK_RX_H__*/
@@ -0,0 +1,926 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ble_rx_app.hpp"
+#include "ble_rx_app.hpp"
+#include "ui_modemsetup.hpp"
+
+#include "modems.hpp"
+#include "audio.hpp"
+#include "io_file.hpp"
+#include "rtc_time.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "ui_fileman.hpp"
+#include "ui_textentry.hpp"
+
+using namespace portapack;
+using namespace modems;
+namespace fs = std::filesystem;
+
+void BLELogger::log_raw_data(const std::string& data) {
+    log_file.write_entry(data);
+}
+
+std::string pad_string_with_spaces(int snakes) {
+    std::string paddedStr(snakes, ' ');
+    return paddedStr;
+}
+
+uint64_t copy_mac_address_to_uint64(const uint8_t* macAddress) {
+    uint64_t result = 0;
+
+    // Copy each byte of the MAC address to the corresponding byte in the uint64_t.
+    for (int i = 0; i < 6; ++i) {
+        result |= static_cast<uint64_t>(macAddress[i]) << ((5 - i) * 8);
+    }
+
+    return result;
+}
+
+void reverse_byte_array(uint8_t* arr, int length) {
+    int start = 0;
+    int end = length - 1;
+
+    while (start < end) {
+        // Swap elements at start and end
+        uint8_t temp = arr[start];
+        arr[start] = arr[end];
+        arr[end] = temp;
+
+        // Move the indices towards the center
+        start++;
+        end--;
+    }
+}
+
+namespace ui {
+
+std::string pdu_type_to_string(ADV_PDU_TYPE type) {
+    std::string pduTypeStr = "";
+
+    switch (type) {
+        case ADV_IND:
+            pduTypeStr += "ADV_IND";
+            break;
+        case ADV_DIRECT_IND:
+            pduTypeStr += "ADV_DIRECT_IND";
+            break;
+        case ADV_NONCONN_IND:
+            pduTypeStr += "ADV_NONCONN_IND";
+            break;
+        case SCAN_REQ:
+            pduTypeStr += "SCAN_REQ";
+            break;
+        case SCAN_RSP:
+            pduTypeStr += "SCAN_RSP";
+            break;
+        case CONNECT_REQ:
+            pduTypeStr += "CONNECT_REQ";
+            break;
+        case ADV_SCAN_IND:
+            pduTypeStr += "ADV_SCAN_IND";
+            break;
+        case RESERVED0:
+        case RESERVED1:
+        case RESERVED2:
+        case RESERVED3:
+        case RESERVED4:
+        case RESERVED5:
+        case RESERVED6:
+        case RESERVED7:
+        case RESERVED8:
+            pduTypeStr += "RESERVED";
+            break;
+        default:
+            pduTypeStr += "UNKNOWN";
+            break;
+    }
+
+    return pduTypeStr;
+}
+
+template <>
+void RecentEntriesTable<BleRecentEntries>::draw(
+    const Entry& entry,
+    const Rect& target_rect,
+    Painter& painter,
+    const Style& style) {
+    std::string line{};
+    line.reserve(30);
+
+    if (!entry.nameString.empty() && entry.include_name) {
+        line = entry.nameString;
+
+        if (line.length() < 17) {
+            line += pad_string_with_spaces(17 - line.length());
+        } else {
+            line = truncate(line, 17);
+        }
+    } else {
+        line = to_string_mac_address(entry.packetData.macAddress, 6, false);
+    }
+
+    // Pushing single digit values down right justified.
+    std::string hitsStr = to_string_dec_int(entry.numHits);
+    int hitsDigits = hitsStr.length();
+    uint8_t hits_spacing = 8 - hitsDigits;
+
+    // Pushing single digit values down right justified.
+    std::string dbStr = to_string_dec_int(entry.dbValue);
+    int dbDigits = dbStr.length();
+    uint8_t db_spacing = 5 - dbDigits;
+
+    line += pad_string_with_spaces(hits_spacing) + hitsStr;
+
+    line += pad_string_with_spaces(db_spacing) + dbStr;
+
+    line.resize(target_rect.width() / 8, ' ');
+    painter.draw_string(target_rect.location(), style, line);
+}
+
+BleRecentEntryDetailView::BleRecentEntryDetailView(NavigationView& nav, const BleRecentEntry& entry)
+    : nav_{nav},
+      entry_{entry} {
+    add_children({&button_done,
+                  &button_send,
+                  &button_save,
+                  &label_mac_address,
+                  &text_mac_address,
+                  &label_pdu_type,
+                  &text_pdu_type,
+                  &labels});
+
+    text_mac_address.set(to_string_mac_address(entry.packetData.macAddress, 6, false));
+    text_pdu_type.set(pdu_type_to_string(entry.pduType));
+
+    button_done.on_select = [&nav](const ui::Button&) {
+        nav.pop();
+    };
+
+    button_send.on_select = [this, &nav](const ui::Button&) {
+        auto packetToSend = build_packet();
+        nav.set_on_pop([packetToSend, &nav]() {
+            nav.replace<BLETxView>(packetToSend);
+        });
+        nav.pop();
+    };
+
+    button_save.on_select = [this, &nav](const ui::Button&) {
+        auto packetToSave = build_packet();
+
+        packetFileBuffer = "";
+        text_prompt(
+            nav,
+            packetFileBuffer,
+            64,
+            [this, packetToSave](std::string& buffer) {
+                on_save_file(buffer, packetToSave);
+            });
+    };
+}
+
+void BleRecentEntryDetailView::on_save_file(const std::string value, BLETxPacket packetToSave) {
+    ensure_directory(packet_save_path);
+    auto folder = packet_save_path.parent_path();
+    auto ext = packet_save_path.extension();
+    auto new_path = folder / value + ext;
+
+    saveFile(new_path, packetToSave);
+}
+
+bool BleRecentEntryDetailView::saveFile(const std::filesystem::path& path, BLETxPacket packetToSave) {
+    File f;
+    auto error = f.create(path);
+    if (error)
+        return false;
+
+    std::string macAddressStr = packetToSave.macAddress;
+    std::string advertisementDataStr = packetToSave.advertisementData;
+    std::string packetCountStr = packetToSave.packetCount;
+
+    std::string packetString = macAddressStr + ' ' + advertisementDataStr + ' ' + packetCountStr;
+
+    f.write(packetString.c_str(), packetString.length());
+
+    return true;
+}
+
+void BleRecentEntryDetailView::update_data() {
+}
+
+void BleRecentEntryDetailView::focus() {
+    button_done.focus();
+}
+
+Rect BleRecentEntryDetailView::draw_field(
+    Painter& painter,
+    const Rect& draw_rect,
+    const Style& style,
+    const std::string& label,
+    const std::string& value) {
+    const int label_length_max = 4;
+
+    painter.draw_string(Point{draw_rect.left(), draw_rect.top()}, style, label);
+    painter.draw_string(Point{draw_rect.left() + (label_length_max + 1) * 8, draw_rect.top()}, style, value);
+
+    return {draw_rect.left(), draw_rect.top() + draw_rect.height(), draw_rect.width(), draw_rect.height()};
+}
+
+void BleRecentEntryDetailView::paint(Painter& painter) {
+    View::paint(painter);
+
+    const auto s = style();
+    const auto rect = screen_rect();
+
+    auto field_rect = Rect{rect.left(), rect.top() + 64, rect.width(), 16};
+
+    uint8_t type[total_data_lines];
+    uint8_t length[total_data_lines];
+    uint8_t data[total_data_lines][40];
+
+    int currentByte = 0;
+    int currentPacket = 0;
+    int i = 0;
+    int j = 0;
+    int k = 0;
+
+    switch (entry_.pduType) {
+        case ADV_IND:
+        case ADV_NONCONN_IND:
+        case SCAN_RSP:
+        case ADV_SCAN_IND: {
+            ADV_PDU_PAYLOAD_TYPE_0_2_4_6* advertiseData = (ADV_PDU_PAYLOAD_TYPE_0_2_4_6*)entry_.packetData.data;
+
+            for (currentByte = 0; (currentByte < entry_.packetData.dataLen) && (currentPacket < total_data_lines);) {
+                length[currentPacket] = advertiseData->Data[currentByte++];
+                type[currentPacket] = advertiseData->Data[currentByte++];
+
+                // Subtract 1 because type is part of the length.
+                for (i = 0; i < length[currentPacket] - 1; i++) {
+                    data[currentPacket][i] = advertiseData->Data[currentByte++];
+                }
+
+                currentPacket++;
+            }
+
+            for (i = 0; i < currentPacket; i++) {
+                uint8_t number_data_lines = ceil((float)(length[i] - 1) / 10.0);
+                uint8_t current_line = 0;
+                std::array<std::string, total_data_lines> data_strings{};
+
+                for (j = 0; (j < (number_data_lines * 10)) && (j < length[i] - 1); j++) {
+                    if ((j / 10) != current_line) {
+                        current_line++;
+                    }
+
+                    data_strings[current_line] += to_string_hex(data[i][j], 2);
+                }
+
+                // Read the type back to the total length.
+                field_rect = draw_field(painter, field_rect, s, to_string_hex(length[i]), to_string_hex(type[i]) + pad_string_with_spaces(3) + data_strings[0]);
+
+                if (number_data_lines > 1) {
+                    for (k = 1; k < number_data_lines; k++) {
+                        if (!data_strings[k].empty()) {
+                            field_rect = draw_field(painter, field_rect, s, "", pad_string_with_spaces(5) + data_strings[k]);
+                        }
+                    }
+                }
+            }
+        } break;
+
+        case ADV_DIRECT_IND:
+        case SCAN_REQ: {
+            ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)entry_.packetData.data;
+            uint8_t type = 0xFF;
+            field_rect = draw_field(painter, field_rect, s, to_string_hex(entry_.packetData.dataLen), to_string_hex(type) + pad_string_with_spaces(3) + to_string_mac_address(directed_mac_data->A1, 6, false));
+        } break;
+
+        case CONNECT_REQ:
+        default: {
+            uint8_t type = 0xFF;
+
+            // TODO: Display Connect Request Information. For right now just printing full hex data.
+            // This struct will eventually be used to break apart containing data of Connect Request.
+            // ADV_PDU_PAYLOAD_TYPE_5 * connect_req = (ADV_PDU_PAYLOAD_TYPE_5 *)entry_.packetData.data;
+
+            for (currentByte = 0; (currentByte < entry_.packetData.dataLen); currentByte++) {
+                data[0][currentByte] = entry_.packetData.data[currentByte];
+            }
+
+            uint8_t number_data_lines = ceil((float)entry_.packetData.dataLen / 10.0);
+            uint8_t current_line = 0;
+            std::array<std::string, total_data_lines> data_strings{};
+
+            for (j = 0; (j < (number_data_lines * 10)) && (j < entry_.packetData.dataLen); j++) {
+                if ((j / 10) != current_line) {
+                    current_line++;
+                }
+
+                data_strings[current_line] += to_string_hex(data[0][j], 2);
+            }
+
+            field_rect = draw_field(painter, field_rect, s, to_string_hex(entry_.packetData.dataLen), to_string_hex(type) + pad_string_with_spaces(3) + data_strings[0]);
+
+            if (number_data_lines > 1) {
+                for (k = 1; k < number_data_lines; k++) {
+                    if (!data_strings[k].empty()) {
+                        field_rect = draw_field(painter, field_rect, s, "", pad_string_with_spaces(5) + data_strings[k]);
+                    }
+                }
+            }
+        } break;
+    }
+}
+
+void BleRecentEntryDetailView::set_entry(const BleRecentEntry& entry) {
+    entry_ = entry;
+    set_dirty();
+}
+
+BLETxPacket BleRecentEntryDetailView::build_packet() {
+    BLETxPacket bleTxPacket;
+    memset(&bleTxPacket, 0, sizeof(BLETxPacket));
+
+    std::string macAddressStr = to_string_mac_address(entry_.packetData.macAddress, 6, true);
+
+    strncpy(bleTxPacket.macAddress, macAddressStr.c_str(), 12);
+    strncpy(bleTxPacket.advertisementData, entry_.dataString.c_str(), entry_.packetData.dataLen * 2);
+    strncpy(bleTxPacket.packetCount, "50", 3);
+    bleTxPacket.packet_count = 50;
+
+    return bleTxPacket;
+}
+
+static std::uint64_t get_freq_by_channel_number(uint8_t channel_number) {
+    uint64_t freq_hz;
+
+    switch (channel_number) {
+        case 37:
+            freq_hz = 2'402'000'000ull;
+            break;
+        case 38:
+            freq_hz = 2'426'000'000ull;
+            break;
+        case 39:
+            freq_hz = 2'480'000'000ull;
+            break;
+        case 0 ... 10:
+            freq_hz = 2'404'000'000ull + channel_number * 2'000'000ull;
+            break;
+        case 11 ... 36:
+            freq_hz = 2'428'000'000ull + (channel_number - 11) * 2'000'000ull;
+            break;
+        default:
+            freq_hz = UINT64_MAX;
+    }
+
+    return freq_hz;
+}
+
+void BLERxView::focus() {
+    options_channel.focus();
+}
+
+void BLERxView::file_error() {
+    nav_.display_modal("Error", "File read error.");
+}
+
+BLERxView::BLERxView(NavigationView& nav)
+    : nav_{nav} {
+    baseband::run_image(portapack::spi_flash::image_tag_btle_rx);
+
+    add_children({&rssi,
+                  &channel,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &options_channel,
+                  &field_frequency,
+                  &check_log,
+                  &button_find,
+                  &check_name,
+                  &label_sort,
+                  &options_sort,
+                  &label_found,
+                  &text_found_count,
+                  &button_filter,
+                  &button_save_list,
+                  &button_clear_list,
+                  &button_switch,
+                  &recent_entries_view});
+
+    recent_entries_view.on_select = [this](const BleRecentEntry& entry) {
+        nav_.push<BleRecentEntryDetailView>(entry);
+    };
+
+    usb_serial_thread = std::make_unique<UsbSerialThread>();
+
+    ensure_directory(find_packet_path);
+    ensure_directory(log_packets_path);
+    ensure_directory(packet_save_path);
+
+    filterBuffer = filter;
+
+    button_filter.on_select = [this](Button&) {
+        text_prompt(
+            nav_,
+            filterBuffer,
+            64,
+            [this](std::string& buffer) {
+                on_filter_change(buffer);
+            });
+    };
+
+    logger = std::make_unique<BLELogger>();
+
+    check_log.set_value(logging);
+
+    check_log.on_select = [this](Checkbox&, bool v) {
+        str_log = "";
+        logging = v;
+
+        if (logger && logging)
+            logger->append(
+                "BLERX/Logs"
+                "/BLELOG_" +
+                to_string_timestamp(rtc_time::now()) + ".TXT");
+    };
+
+    button_save_list.on_select = [this, &nav](const ui::Button&) {
+        listFileBuffer = "";
+        text_prompt(
+            nav,
+            listFileBuffer,
+            64,
+            [this](std::string& buffer) {
+                on_save_file(buffer);
+            });
+    };
+
+    button_clear_list.on_select = [this](Button&) {
+        recent.clear();
+    };
+
+    button_switch.on_select = [&nav](Button&) {
+        nav.replace<BLETxView>();
+    };
+
+    field_frequency.set_step(0);
+
+    check_name.set_value(name_enable);
+
+    check_name.on_select = [this](Checkbox&, bool v) {
+        name_enable = v;
+        setAllMembersToValue(recent, &BleRecentEntry::include_name, v);
+        recent_entries_view.set_dirty();
+    };
+
+    options_channel.on_change = [this](size_t index, int32_t v) {
+        channel_index = (uint8_t)index;
+
+        // If we selected Auto don't do anything and Auto will handle changing.
+        if (v == 40) {
+            auto_channel = true;
+            return;
+        } else {
+            auto_channel = false;
+        }
+
+        field_frequency.set_value(get_freq_by_channel_number(v));
+        channel_number = v;
+
+        baseband::set_btlerx(channel_number);
+    };
+
+    options_sort.on_change = [this](size_t index, int32_t v) {
+        sort_index = (uint8_t)index;
+        handle_entries_sort(v);
+    };
+
+    options_channel.set_selected_index(channel_index, true);
+    options_sort.set_selected_index(sort_index, true);
+
+    button_find.on_select = [this](Button&) {
+        auto open_view = nav_.push<FileLoadView>(".TXT");
+        open_view->on_changed = [this](std::filesystem::path new_file_path) {
+            on_file_changed(new_file_path);
+
+            // nav_.set_on_pop([this]() { button_play.focus(); });
+        };
+    };
+
+    // Auto-configure modem for LCR RX (will be removed later)
+    baseband::set_btlerx(channel_number);
+
+    receiver_model.enable();
+}
+
+std::string BLERxView::build_line_str(BleRecentEntry entry) {
+    std::string macAddressStr = to_string_mac_address(entry.packetData.macAddress, 6, false) + ",";
+    std::string timestameStr = entry.timestamp + ",";
+    std::string nameStr = entry.nameString + ",";
+    std::string pduStr = pdu_type_to_string(entry.pduType) + ",";
+    std::string dataStr = "0x" + entry.dataString + ",";
+    std::string hitsStr = to_string_dec_int(entry.numHits) + ",";
+    std::string dbStr = to_string_dec_int(entry.dbValue) + ",";
+    std::string channelStr = to_string_dec_int(entry.channelNumber) + ",";
+
+    std::string lineStr = timestameStr + macAddressStr + nameStr + pduStr + dataStr + hitsStr + dbStr + channelStr;
+    lineStr += pad_string_with_spaces(maxLineLength - lineStr.length());
+
+    return lineStr;
+}
+
+void BLERxView::on_save_file(const std::string value) {
+    auto folder = packet_save_path.parent_path();
+    auto ext = packet_save_path.extension();
+    auto new_path = folder / value + ext;
+
+    saveFile(new_path);
+}
+
+bool BLERxView::saveFile(const std::filesystem::path& path) {
+    // Check to see if file was previously saved.
+    bool file_existed = file_exists(path);
+
+    // Attempt to open, if it can't be opened. Create new.
+    auto src = std::make_unique<File>();
+    auto error = src->open(path, false, true);
+
+    if (error) {
+        return false;
+    }
+
+    for (const auto& entry : recent) {
+        tempList.emplace_back(entry);
+    }
+
+    if (!file_existed) {
+        src->write_line(headerStr.c_str());
+
+        auto it = tempList.begin();
+
+        while (it != tempList.end()) {
+            BleRecentEntry entry = (BleRecentEntry)*it;
+            src->write_line(build_line_str(entry).c_str());
+            it++;
+        }
+    } else {
+        // Check file for macAddressStr before adding.
+        char currentLine[maxLineLength];
+        uint64_t startPos = headerStr.length();
+        uint64_t bytesRead = 0;
+        uint64_t bytePos = 0;
+
+        File::Size currentSize = src->size();
+
+        auto dst = std::make_unique<File>();
+        const std::filesystem::path tempFilePath = path + "~";
+        auto error = dst->open(tempFilePath, false, true);
+
+        if (error) {
+            return false;
+        }
+
+        dst->write_line(headerStr.c_str());
+
+        src->seek(startPos);
+
+        // Look for ones found and rewrite.
+        do {
+            memset(currentLine, 0, maxLineLength);
+
+            bytesRead = readUntil(*src, currentLine, currentSize, '\n');
+
+            if (!bytesRead) {
+                break;
+            }
+
+            bytePos += bytesRead;
+
+            std::string lineStr = "";
+            std::string macAddressStr = "";
+            BleRecentEntry foundEntry;
+
+            char* token;
+            token = strtok(currentLine, ",");
+
+            while (token != NULL) {
+                auto it = tempList.begin();
+
+                while (it != tempList.end()) {
+                    BleRecentEntry& entry = reinterpret_cast<BleRecentEntry&>(*it);
+
+                    macAddressStr = to_string_mac_address(entry.packetData.macAddress, 6, false);
+
+                    if (strstr(token, macAddressStr.c_str()) != NULL) {
+                        entry.entryFound = true;
+                        foundEntry = entry;
+                        break;
+                    }
+
+                    it++;
+                }
+
+                if (foundEntry.entryFound) {
+                    break;
+                }
+
+                token = strtok(NULL, ",");
+            }
+
+            if (foundEntry.entryFound) {
+                dst->write_line(build_line_str(foundEntry).c_str());
+            }
+
+        } while (bytePos <= currentSize);
+
+        // Write the ones not found.
+        auto it = tempList.begin();
+
+        while (it != tempList.end()) {
+            BleRecentEntry entry = (BleRecentEntry)*it;
+
+            if (!entry.entryFound) {
+                dst->write_line(build_line_str(entry).c_str());
+            }
+
+            it++;
+        }
+
+        // Close files before renaming/deleting.
+        src.reset();
+        dst.reset();
+
+        // Delete original and overwrite with temp file.
+        delete_file(path);
+        rename_file(tempFilePath, path);
+    }
+
+    tempList.clear();
+
+    return true;
+}
+
+void BLERxView::on_data(BlePacketData* packet) {
+    if (!logging) {
+        str_log = "";
+    }
+
+    str_console += pdu_type_to_string((ADV_PDU_TYPE)packet->type);
+    str_console += " Len:";
+    str_console += to_string_dec_uint(packet->size);
+    str_console += " Mac:";
+    str_console += to_string_mac_address(packet->macAddress, 6, false);
+    str_console += " Data:";
+
+    int i;
+
+    for (i = 0; i < packet->dataLen; i++) {
+        str_console += to_string_hex(packet->data[i], 2);
+    }
+
+    uint64_t macAddressEncoded = copy_mac_address_to_uint64(packet->macAddress);
+
+    // Start of Packet stuffing.
+    // Masking off the top 2 bytes to avoid invalid keys.
+    auto& entry = ::on_packet(recent, macAddressEncoded & 0xFFFFFFFFFFFF);
+    updateEntry(packet, entry, (ADV_PDU_TYPE)packet->type);
+
+    // Add entries if they meet the criteria.
+    auto value = filter;
+    resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+        return (entry.dataString.find(value) == std::string::npos) && (entry.nameString.find(value) == std::string::npos);
+    });
+
+    handle_entries_sort(options_sort.selected_index());
+
+    // Log at End of Packet.
+    if (logger && logging) {
+        logger->log_raw_data(str_console + "\r\n");
+    }
+
+    usb_serial_thread->serial_str = str_console + "\r\n";
+    usb_serial_thread->str_ready = true;
+    str_console = "";
+
+    if (!searchList.empty()) {
+        auto it = searchList.begin();
+
+        while (it != searchList.end()) {
+            std::string searchStr = (std::string)*it;
+
+            if (entry.dataString.find(searchStr) != std::string::npos) {
+                searchList.erase(it);
+                found_count++;
+                break;
+            }
+
+            it++;
+        }
+
+        text_found_count.set(to_string_dec_uint(found_count) + "/" + to_string_dec_uint(total_count));
+    }
+}
+
+void BLERxView::on_filter_change(std::string value) {
+    // New filter? Reset list from recent entries.
+    if (filter != value) {
+        resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+            return (entry.dataString.find(value) == std::string::npos) && (entry.nameString.find(value) == std::string::npos);
+        });
+    }
+
+    filter = value;
+}
+
+void BLERxView::on_file_changed(const std::filesystem::path& new_file_path) {
+    file_path = fs::path(u"/") + new_file_path;
+    found_count = 0;
+    total_count = 0;
+    searchList.clear();
+
+    {  // Get the size of the data file.
+        File data_file;
+        auto error = data_file.open(file_path, true, false);
+        if (error) {
+            file_error();
+            file_path = "";
+            return;
+        }
+
+        uint64_t bytesRead = 0;
+        uint64_t bytePos = 0;
+        char currentLine[maxLineLength];
+
+        do {
+            memset(currentLine, 0, maxLineLength);
+
+            bytesRead = readUntil(data_file, currentLine, maxLineLength, '\n');
+
+            // Remove return if found.
+            if (currentLine[strlen(currentLine)] == '\r') {
+                currentLine[strlen(currentLine)] = '\0';
+            }
+
+            if (!bytesRead) {
+                break;
+            }
+
+            searchList.push_back(currentLine);
+            total_count++;
+
+            bytePos += bytesRead;
+
+        } while (bytePos <= data_file.size());
+    }
+}
+
+// called each 1/60th of second, so 6 = 100ms
+void BLERxView::on_timer() {
+    if (++timer_count == timer_period) {
+        timer_count = 0;
+
+        if (auto_channel) {
+            int min = 37;
+            int max = 39;
+
+            int randomChannel = min + std::rand() % (max - min + 1);
+
+            field_frequency.set_value(get_freq_by_channel_number(randomChannel));
+            baseband::set_btlerx(randomChannel);
+        }
+    }
+}
+
+void BLERxView::handle_entries_sort(uint8_t index) {
+    switch (index) {
+        case 0:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.macAddress; }, true);
+            break;
+        case 1:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.numHits; }, false);
+            break;
+        case 2:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.dbValue; }, false);
+            break;
+        case 3:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.timestamp; }, false);
+            break;
+        case 4:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.nameString; }, true);
+            break;
+        default:
+            break;
+    }
+
+    recent_entries_view.set_dirty();
+}
+
+void BLERxView::set_parent_rect(const Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+    const Rect content_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height - switch_button_height};
+    recent_entries_view.set_parent_rect(content_rect);
+}
+
+BLERxView::~BLERxView() {
+    receiver_model.disable();
+    baseband::shutdown();
+}
+
+void BLERxView::updateEntry(const BlePacketData* packet, BleRecentEntry& entry, ADV_PDU_TYPE pdu_type) {
+    std::string data_string;
+
+    int i;
+
+    for (i = 0; i < packet->dataLen; i++) {
+        data_string += to_string_hex(packet->data[i], 2);
+    }
+
+    entry.dbValue = packet->max_dB;
+    entry.timestamp = to_string_timestamp(rtc_time::now());
+    entry.dataString = data_string;
+
+    entry.packetData.type = packet->type;
+    entry.packetData.size = packet->size;
+    entry.packetData.dataLen = packet->dataLen;
+
+    // Mac Address of sender.
+    entry.packetData.macAddress[0] = packet->macAddress[0];
+    entry.packetData.macAddress[1] = packet->macAddress[1];
+    entry.packetData.macAddress[2] = packet->macAddress[2];
+    entry.packetData.macAddress[3] = packet->macAddress[3];
+    entry.packetData.macAddress[4] = packet->macAddress[4];
+    entry.packetData.macAddress[5] = packet->macAddress[5];
+
+    entry.numHits++;
+    entry.pduType = pdu_type;
+    entry.channelNumber = channel_number;
+
+    // Parse Data Section into buffer to be interpretted later.
+    for (int i = 0; i < packet->dataLen; i++) {
+        entry.packetData.data[i] = packet->data[i];
+    }
+
+    entry.include_name = check_name.value();
+
+    // Only parse name for advertisment packets and empty name entries
+    if ((pdu_type == ADV_IND || pdu_type == ADV_NONCONN_IND || pdu_type == SCAN_RSP || pdu_type == ADV_SCAN_IND) && entry.nameString.empty()) {
+        ADV_PDU_PAYLOAD_TYPE_0_2_4_6* advertiseData = (ADV_PDU_PAYLOAD_TYPE_0_2_4_6*)entry.packetData.data;
+
+        uint8_t currentByte = 0;
+        uint8_t length = 0;
+        uint8_t type = 0;
+
+        std::string decoded_data;
+        for (currentByte = 0; (currentByte < entry.packetData.dataLen);) {
+            length = advertiseData->Data[currentByte++];
+            type = advertiseData->Data[currentByte++];
+
+            // Subtract 1 because type is part of the length.
+            for (int i = 0; i < length - 1; i++) {
+                if (type == 0x08 || type == 0x09) {
+                    decoded_data += (char)advertiseData->Data[currentByte];
+                }
+                currentByte++;
+            }
+            if (!decoded_data.empty()) {
+                entry.nameString = std::move(decoded_data);
+                break;
+            }
+        }
+    } else if (pdu_type == ADV_DIRECT_IND || pdu_type == SCAN_REQ) {
+        ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)entry.packetData.data;
+        reverse_byte_array(directed_mac_data->A1, 6);
+    }
+}
+
+} /* namespace ui */
@@ -0,0 +1,368 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __BLE_RX_APP_H__
+#define __BLE_RX_APP_H__
+
+#include "ble_tx_app.hpp"
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "log_file.hpp"
+#include "utility.hpp"
+#include "usb_serial_thread.hpp"
+
+#include "recent_entries.hpp"
+
+class BLELogger {
+   public:
+    Optional<File::Error> append(const std::string& filename) {
+        return log_file.append(filename);
+    }
+
+    void log_raw_data(const std::string& data);
+
+   private:
+    LogFile log_file{};
+};
+
+namespace ui {
+typedef enum {
+    ADV_IND = 0,
+    ADV_DIRECT_IND = 1,
+    ADV_NONCONN_IND = 2,
+    SCAN_REQ = 3,
+    SCAN_RSP = 4,
+    CONNECT_REQ = 5,
+    ADV_SCAN_IND = 6,
+    RESERVED0 = 7,
+    RESERVED1 = 8,
+    RESERVED2 = 9,
+    RESERVED3 = 10,
+    RESERVED4 = 11,
+    RESERVED5 = 12,
+    RESERVED6 = 13,
+    RESERVED7 = 14,
+    RESERVED8 = 15
+} ADV_PDU_TYPE;
+
+struct BleRecentEntry {
+    using Key = uint64_t;
+
+    static constexpr Key invalid_key = 0xffffffff;
+
+    uint64_t macAddress;
+    int dbValue;
+    BlePacketData packetData;
+    std::string timestamp;
+    std::string dataString;
+    std::string nameString;
+    bool include_name;
+    uint16_t numHits;
+    ADV_PDU_TYPE pduType;
+    uint8_t channelNumber;
+    bool entryFound;
+
+    BleRecentEntry()
+        : BleRecentEntry{0} {
+    }
+
+    BleRecentEntry(
+        const uint64_t macAddress)
+        : macAddress{macAddress},
+          dbValue{},
+          packetData{},
+          timestamp{},
+          dataString{},
+          nameString{},
+          include_name{},
+          numHits{},
+          pduType{},
+          channelNumber{},
+          entryFound{} {
+    }
+
+    Key key() const {
+        return macAddress;
+    }
+};
+
+using BleRecentEntries = RecentEntries<BleRecentEntry>;
+using BleRecentEntriesView = RecentEntriesView<BleRecentEntries>;
+
+class BleRecentEntryDetailView : public View {
+   public:
+    BleRecentEntryDetailView(NavigationView& nav, const BleRecentEntry& entry);
+
+    void set_entry(const BleRecentEntry& new_entry);
+    const BleRecentEntry& entry() const { return entry_; };
+
+    void update_data();
+    void focus() override;
+    void paint(Painter&) override;
+
+   private:
+    NavigationView& nav_;
+    BleRecentEntry entry_{};
+    BLETxPacket build_packet();
+    void on_save_file(const std::string value, BLETxPacket packetToSave);
+    bool saveFile(const std::filesystem::path& path, BLETxPacket packetToSave);
+    std::string packetFileBuffer{};
+    std::filesystem::path packet_save_path{u"BLERX/Lists/????.csv"};
+
+    static constexpr uint8_t total_data_lines{5};
+
+    Labels label_mac_address{
+        {{0 * 8, 0 * 16}, "Mac Address:", Color::light_grey()}};
+
+    Text text_mac_address{
+        {12 * 8, 0 * 16, 17 * 8, 16},
+        "-"};
+
+    Labels label_pdu_type{
+        {{0 * 8, 1 * 16}, "PDU Type:", Color::light_grey()}};
+
+    Text text_pdu_type{
+        {9 * 8, 1 * 16, 17 * 8, 16},
+        "-"};
+
+    Labels labels{
+        {{0 * 8, 3 * 16}, "Len", Color::light_grey()},
+        {{5 * 8, 3 * 16}, "Type", Color::light_grey()},
+        {{10 * 8, 3 * 16}, "Value", Color::light_grey()},
+    };
+
+    Button button_send{
+        {19, 224, 96, 24},
+        "Send"};
+
+    Button button_done{
+        {125, 224, 96, 24},
+        "Done"};
+
+    Button button_save{
+        {72, 264, 96, 24},
+        "Save"};
+
+    bool send_updates{false};
+
+    Rect draw_field(
+        Painter& painter,
+        const Rect& draw_rect,
+        const Style& style,
+        const std::string& label,
+        const std::string& value);
+};
+
+class BLERxView : public View {
+   public:
+    BLERxView(NavigationView& nav);
+    ~BLERxView();
+
+    void set_parent_rect(const Rect new_parent_rect) override;
+    void paint(Painter&) override{};
+
+    void focus() override;
+
+    std::string title() const override { return "BLE RX"; };
+
+   private:
+    std::string build_line_str(BleRecentEntry entry);
+    void on_save_file(const std::string value);
+    bool saveFile(const std::filesystem::path& path);
+    std::unique_ptr<UsbSerialThread> usb_serial_thread{};
+    void on_data(BlePacketData* packetData);
+    void on_filter_change(std::string value);
+    void on_file_changed(const std::filesystem::path& new_file_path);
+    void file_error();
+    void on_timer();
+    void handle_entries_sort(uint8_t index);
+    void updateEntry(const BlePacketData* packet, BleRecentEntry& entry, ADV_PDU_TYPE pdu_type);
+
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        2402000000 /* frequency */,
+        4000000 /* bandwidth */,
+        4000000 /* sampling rate */,
+        ReceiverModel::Mode::WidebandFMAudio};
+
+    uint8_t channel_index{0};
+    uint8_t sort_index{0};
+    std::string filter{};
+    bool logging{false};
+
+    bool name_enable{true};
+    app_settings::SettingsManager settings_{
+        "rx_ble",
+        app_settings::Mode::RX,
+        {
+            {"channel_index"sv, &channel_index},
+            {"sort_index"sv, &sort_index},
+            {"filter"sv, &filter},
+            {"log"sv, &logging},
+            {"name"sv, &name_enable},
+        }};
+
+    std::string str_console = "";
+    uint8_t console_color{0};
+    uint32_t prev_value{0};
+    uint8_t channel_number = 37;
+    bool auto_channel = false;
+
+    int16_t timer_count{0};
+    int16_t timer_period{6};  // 100ms
+
+    std::string filterBuffer{};
+    std::string listFileBuffer{};
+    std::string headerStr = "Timestamp, MAC Address, Name, Packet Type, Data, Hits, dB, Channel";
+    uint16_t maxLineLength = 140;
+
+    std::filesystem::path file_path{};
+    uint64_t found_count = 0;
+    uint64_t total_count = 0;
+    std::vector<std::string> searchList{};
+
+    std::filesystem::path find_packet_path{u"BLERX/Find/????.TXT"};
+    std::filesystem::path log_packets_path{u"BLERX/Logs/????.TXT"};
+    std::filesystem::path packet_save_path{u"BLERX/Lists/????.csv"};
+
+    static constexpr auto header_height = 4 * 16;
+    static constexpr auto switch_button_height = 3 * 16;
+
+    OptionsField options_channel{
+        {0 * 8, 0 * 8},
+        5,
+        {{"Ch.37 ", 37},
+         {"Ch.38", 38},
+         {"Ch.39", 39},
+         {"Auto", 40}}};
+
+    RxFrequencyField field_frequency{
+        {6 * 8, 0 * 16},
+        nav_};
+
+    RFAmpField field_rf_amp{
+        {16 * 8, 0 * 16}};
+
+    LNAGainField field_lna{
+        {18 * 8, 0 * 16}};
+
+    VGAGainField field_vga{
+        {21 * 8, 0 * 16}};
+
+    RSSI rssi{
+        {24 * 8, 0, 6 * 8, 4}};
+
+    Channel channel{
+        {24 * 8, 5, 6 * 8, 4}};
+
+    Labels label_sort{
+        {{0 * 8, 3 * 8}, "Sort:", Color::light_grey()}};
+
+    OptionsField options_sort{
+        {5 * 8, 3 * 8},
+        4,
+        {{"MAC", 0},
+         {"Hits", 1},
+         {"dB", 2},
+         {"Time", 3},
+         {"Name", 4}}};
+
+    Button button_filter{
+        {11 * 8, 3 * 8, 4 * 8, 16},
+        "Filter"};
+
+    Checkbox check_log{
+        {17 * 8, 3 * 8},
+        3,
+        "Log",
+        true};
+
+    Checkbox check_name{
+        {23 * 8, 3 * 8},
+        3,
+        "Name",
+        true};
+
+    Button button_find{
+        {0 * 8, 6 * 8, 4 * 8, 16},
+        "Find"};
+
+    Labels label_found{
+        {{5 * 8, 6 * 8}, "Found:", Color::light_grey()}};
+
+    Text text_found_count{
+        {11 * 8, 3 * 16, 20 * 8, 16},
+        "0/0"};
+
+    Console console{
+        {0, 4 * 16, 240, 240}};
+
+    Button button_clear_list{
+        {2 * 8, 320 - (16 + 32), 7 * 8, 32},
+        "Clear"};
+
+    Button button_save_list{
+        {11 * 8, 320 - (16 + 32), 11 * 8, 32},
+        "Export CSV"};
+
+    Button button_switch{
+        {240 - 6 * 8, 320 - (16 + 32), 4 * 8, 32},
+        "Tx"};
+
+    std::string str_log{""};
+    std::unique_ptr<BLELogger> logger{};
+
+    BleRecentEntries recent{};
+    BleRecentEntries tempList{};
+
+    const RecentEntriesColumns columns{{
+        {"Mac Address", 17},
+        {"Hits", 7},
+        {"dB", 4},
+    }};
+
+    BleRecentEntriesView recent_entries_view{columns, recent};
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::BlePacket,
+        [this](Message* const p) {
+            const auto message = static_cast<const BLEPacketMessage*>(p);
+            this->on_data(message->packet);
+        }};
+
+    MessageHandlerRegistration message_handler_frame_sync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) {
+            this->on_timer();
+        }};
+};
+
+} /* namespace ui */
+
+#endif /*__UI_AFSK_RX_H__*/
@@ -0,0 +1,561 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ble_tx_app.hpp"
+#include "ble_rx_app.hpp"
+
+#include "ui_fileman.hpp"
+#include "ui_modemsetup.hpp"
+
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "io_file.hpp"
+#include "modems.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "rtc_time.hpp"
+#include "string_format.hpp"
+
+using namespace portapack;
+using namespace modems;
+namespace fs = std::filesystem;
+
+void BLELoggerTx::log_raw_data(const std::string& data) {
+    log_file.write_entry(data);
+}
+
+bool hasValidHexPairs(const std::string& str, int totalPairs) {
+    int validPairs = 0;
+
+    for (int i = 0; i < totalPairs * 2; i += 2) {
+        char c1 = str[i];
+        char c2 = str[i + 1];
+
+        if (!(std::isxdigit(c1) && std::isxdigit(c2))) {
+            return false;  // Return false if any pair is invalid.
+        }
+
+        validPairs++;
+    }
+
+    return (validPairs == totalPairs);
+}
+
+std::vector<std::string> splitIntoStrings(const char* input) {
+    std::vector<std::string> result;
+    int length = std::strlen(input);
+    int start = 0;
+
+    while (start < length) {
+        int remaining = length - start;
+        int chunkSize = (remaining > 29) ? 29 : remaining;
+        result.push_back(std::string(input + start, chunkSize));
+        start += chunkSize;
+    }
+
+    return result;
+}
+
+uint32_t stringToUint32(const std::string& str) {
+    size_t pos = 0;
+    uint32_t result = 0;
+
+    while (pos < str.size() && std::isdigit(str[pos])) {
+        int digit = str[pos] - '0';
+
+        // Check for overflow before adding the next digit
+        if (result > (UINT32_MAX - digit) / 10) {
+            return 0;
+        }
+
+        result = result * 10 + digit;
+        pos++;
+    }
+
+    return result;
+}
+
+static std::uint64_t get_freq_by_channel_number(uint8_t channel_number) {
+    uint64_t freq_hz;
+
+    switch (channel_number) {
+        case 37:
+            freq_hz = 2'402'000'000ull;
+            break;
+        case 38:
+            freq_hz = 2'426'000'000ull;
+            break;
+        case 39:
+            freq_hz = 2'480'000'000ull;
+            break;
+        case 0 ... 10:
+            freq_hz = 2'404'000'000ull + channel_number * 2'000'000ull;
+            break;
+        case 11 ... 36:
+            freq_hz = 2'428'000'000ull + (channel_number - 11) * 2'000'000ull;
+            break;
+        default:
+            freq_hz = UINT64_MAX;
+    }
+
+    return freq_hz;
+}
+
+namespace ui {
+
+void BLETxView::focus() {
+    button_open.focus();
+}
+
+bool BLETxView::is_active() const {
+    return (bool)is_running;
+}
+
+void BLETxView::file_error() {
+    nav_.display_modal("Error", "File read error.");
+}
+
+bool BLETxView::saveFile(const std::filesystem::path& path) {
+    File f;
+    auto error = f.create(path);
+    if (error)
+        return false;
+
+    for (uint32_t i = 0; i < num_packets; i++) {
+        std::string macAddressStr = packets[i].macAddress;
+        std::string advertisementDataStr = packets[i].advertisementData;
+        std::string packetCountStr = packets[i].packetCount;
+
+        std::string packetString = macAddressStr + ' ' + advertisementDataStr + ' ' + packetCountStr;
+
+        // Are we on the last line?
+        if (i != num_packets - 1) {
+            packetString += '\n';
+        }
+
+        f.write(packetString.c_str(), packetString.length());
+    }
+
+    return true;
+}
+
+void BLETxView::toggle() {
+    if (is_active()) {
+        stop();
+    } else {
+        start();
+    }
+}
+
+void BLETxView::start() {
+    baseband::run_image(portapack::spi_flash::image_tag_btle_tx);
+    transmitter_model.enable();
+
+    // Generate new random Mac Address.
+    generateRandomMacAddress(randomMac);
+
+    // If this is our first run, check file.
+    if (!is_active()) {
+        File data_file;
+
+        auto error = data_file.open(file_path);
+        if (error && !file_override) {
+            file_error();
+            check_loop.set_value(false);
+            return;
+        }
+
+        button_play.set_bitmap(&bitmap_stop);
+        is_running = true;
+    }
+
+    char advertisementData[63] = {0};
+    strcpy(advertisementData, packets[current_packet].advertisementData);
+
+    // TODO: Make this a checkbox.
+    if (!markedBytes.empty()) {
+        for (size_t i = 0; i < strlen(advertisementData); i++) {
+            bool found = false;
+
+            auto it = std::find(markedBytes.begin(), markedBytes.end(), i);
+
+            if (it != markedBytes.end()) {
+                found = true;
+            }
+
+            if (found) {
+                uint8_t hexDigit;
+                switch (marked_data_sequence.selected_index_value()) {
+                    case 0:
+                        hexDigit = marked_counter++;
+                        break;
+                    case 1:
+                        hexDigit = marked_counter--;
+                        break;
+                    case 2: {
+                        uint8_t min = 0x00;
+                        uint8_t max = 0x0F;
+
+                        hexDigit = min + std::rand() % (max - min + 1);
+                    } break;
+                    default:
+                        hexDigit = 0;
+                        break;
+                }
+
+                advertisementData[i] = uint_to_char(hexDigit, 16);
+
+                // Bounding to Hex.
+                if (marked_counter == 16) {
+                    marked_counter = 0;
+                } else if (marked_counter == 255) {
+                    marked_counter = 15;
+                }
+            }
+        }
+    }
+
+    // Setup next packet configuration.
+    progressbar.set_max(packets[current_packet].packet_count);
+    baseband::set_btletx(channel_number, random_mac ? randomMac : packets[current_packet].macAddress, advertisementData, pduType);
+}
+
+void BLETxView::stop() {
+    transmitter_model.disable();
+    baseband::shutdown();
+
+    progressbar.set_value(0);
+    button_play.set_bitmap(&bitmap_play);
+    check_loop.set_value(false);
+
+    update_current_packet(packets[0], 0);
+
+    is_running = false;
+}
+
+void BLETxView::reset() {
+    transmitter_model.disable();
+    baseband::shutdown();
+
+    start();
+}
+
+// called each 1/60th of second, so 6 = 100ms
+void BLETxView::on_timer() {
+    if (++timer_count == timer_period) {
+        timer_count = 0;
+
+        if (is_active()) {
+            // Reached end of current packet repeats.
+            if (packet_counter == 0) {
+                // Done sending all packets.
+                if (current_packet == (num_packets - 1)) {
+                    current_packet = 0;
+
+                    // If looping, restart from beginning.
+                    if (check_loop.value()) {
+                        update_current_packet(packets[current_packet], current_packet);
+                        reset();
+                    } else {
+                        stop();
+                    }
+                } else {
+                    current_packet++;
+                    update_current_packet(packets[current_packet], current_packet);
+                    reset();
+                }
+            } else {
+                reset();
+            }
+        }
+    }
+
+    if (++auto_channel_counter == auto_channel_period) {
+        auto_channel_counter = 0;
+
+        if (auto_channel) {
+            int min = 37;
+            int max = 39;
+
+            channel_number = min + std::rand() % (max - min + 1);
+
+            field_frequency.set_value(get_freq_by_channel_number(channel_number));
+        }
+    }
+}
+
+void BLETxView::on_tx_progress(const bool done) {
+    if (done) {
+        if (is_active()) {
+            if ((packet_counter % 10) == 0) {
+                text_packets_sent.set(to_string_dec_uint(packet_counter));
+            }
+
+            packet_counter--;
+            progressbar.set_value(packets[current_packet].packet_count - packet_counter);
+        }
+    }
+}
+
+BLETxView::BLETxView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({&button_open,
+                  &text_filename,
+                  &progressbar,
+                  &check_rand_mac,
+                  &field_frequency,
+                  &tx_view,  // now it handles previous rfgain, rfamp.
+                  &check_loop,
+                  &button_play,
+                  &label_speed,
+                  &options_speed,
+                  &options_channel,
+                  &options_adv_type,
+                  &label_marked_data,
+                  &marked_data_sequence,
+                  &label_packet_index,
+                  &text_packet_index,
+                  &label_packets_sent,
+                  &text_packets_sent,
+                  &label_mac_address,
+                  &text_mac_address,
+                  &label_data_packet,
+                  &dataEditView,
+                  &button_clear_marked,
+                  &button_save_packet,
+                  &button_switch});
+
+    field_frequency.set_step(0);
+
+    ensure_directory(packet_save_path);
+
+    button_play.on_select = [this](ImageButton&) {
+        this->toggle();
+    };
+
+    options_channel.on_change = [this](size_t, int32_t i) {
+        // If we selected Auto don't do anything and Auto will handle changing.
+        if (i == 40) {
+            auto_channel = true;
+            return;
+        } else {
+            auto_channel = false;
+        }
+
+        field_frequency.set_value(get_freq_by_channel_number(i));
+        channel_number = i;
+    };
+
+    options_speed.on_change = [this](size_t, int32_t i) {
+        timer_period = i;
+        timer_count = 0;
+    };
+
+    options_adv_type.on_change = [this](size_t, int32_t i) {
+        pduType = (PKT_TYPE)i;
+    };
+
+    options_speed.set_selected_index(0);
+    options_channel.set_selected_index(0);
+    options_adv_type.set_selected_index(0);
+
+    check_rand_mac.set_value(false);
+    check_rand_mac.on_select = [this](Checkbox&, bool v) {
+        random_mac = v;
+    };
+
+    button_open.on_select = [this](Button&) {
+        auto open_view = nav_.push<FileLoadView>(".TXT");
+        open_view->on_changed = [this](std::filesystem::path new_file_path) {
+            on_file_changed(new_file_path);
+
+            nav_.set_on_pop([this]() { button_play.focus(); });
+        };
+    };
+
+    button_save_packet.on_select = [this, &nav](Button&) {
+        packetFileBuffer = "";
+        text_prompt(
+            nav,
+            packetFileBuffer,
+            64,
+            [this](std::string& buffer) {
+                on_save_file(buffer);
+            });
+    };
+
+    button_switch.on_select = [&nav](Button&) {
+        nav.replace<BLERxView>();
+    };
+
+    dataEditView.on_select = [this] {
+        // Save last selected cursor.
+        cursor_pos.line = dataEditView.line();
+        cursor_pos.col = dataEditView.col();
+
+        // Reject setting newline at index 29.
+        if (cursor_pos.col != 29) {
+            uint16_t dataBytePos = (cursor_pos.line * 29) + cursor_pos.col;
+
+            auto it = std::find(markedBytes.begin(), markedBytes.end(), dataBytePos);
+
+            if (it != markedBytes.end()) {
+                markedBytes.erase(it);
+            } else {
+                markedBytes.push_back(dataBytePos);
+            }
+
+            dataEditView.cursor_mark_selected();
+        }
+    };
+
+    button_clear_marked.on_select = [this](Button&) {
+        marked_counter = 0;
+        markedBytes.clear();
+        dataEditView.cursor_clear_marked();
+    };
+}
+
+BLETxView::BLETxView(
+    NavigationView& nav,
+    BLETxPacket packet)
+    : BLETxView(nav) {
+    packets[0] = packet;
+
+    update_current_packet(packets[0], 0);
+
+    num_packets = 1;
+    file_override = true;
+}
+
+void BLETxView::on_file_changed(const fs::path& new_file_path) {
+    file_path = fs::path(u"/") + new_file_path;
+    num_packets = 0;
+
+    {  // Get the size of the data file.
+        File data_file;
+        auto error = data_file.open(file_path);
+        if (error) {
+            file_error();
+            file_path = "";
+            return;
+        }
+
+        do {
+            readUntil(data_file, packets[num_packets].macAddress, mac_address_size_str, ' ');
+            readUntil(data_file, packets[num_packets].advertisementData, max_packet_size_str, ' ');
+            readUntil(data_file, packets[num_packets].packetCount, max_packet_repeat_str, '\n');
+
+            uint64_t macAddressSize = strlen(packets[num_packets].macAddress);
+            uint64_t advertisementDataSize = strlen(packets[num_packets].advertisementData);
+            uint64_t packetCountSize = strlen(packets[num_packets].packetCount);
+
+            packets[num_packets].packet_count = stringToUint32(packets[num_packets].packetCount);
+
+            // Verify Data.
+            if ((macAddressSize == mac_address_size_str) && (advertisementDataSize < max_packet_size_str) && (packetCountSize < max_packet_repeat_str) &&
+                hasValidHexPairs(packets[num_packets].macAddress, macAddressSize / 2) && hasValidHexPairs(packets[num_packets].advertisementData, advertisementDataSize / 2) && (packets[num_packets].packet_count >= 1) && (packets[num_packets].packet_count < max_packet_repeat_count)) {
+                text_filename.set(truncate(file_path.filename().string(), 12));
+
+            } else {
+                // Did not find any packets.
+                if (num_packets == 0) {
+                    file_path = "";
+                    return;
+                }
+
+                break;
+            }
+
+            num_packets++;
+
+        } while (num_packets < max_num_packets);
+
+        update_current_packet(packets[0], 0);
+    }
+}
+
+void BLETxView::on_save_file(const std::string value) {
+    auto folder = packet_save_path.parent_path();
+    auto ext = packet_save_path.extension();
+    auto new_path = folder / value + ext;
+
+    saveFile(new_path);
+}
+
+void BLETxView::on_data(uint32_t value, bool is_data) {
+    std::string str_console = "";
+
+    if (is_data) {
+        str_console += (char)(value);
+    }
+}
+
+void BLETxView::update_current_packet(BLETxPacket packet, uint32_t currentIndex) {
+    std::string formattedMacAddress = to_string_formatted_mac_address(packet.macAddress);
+
+    std::vector<std::string> strings = splitIntoStrings(packet.advertisementData);
+
+    text_packet_index.set(to_string_dec_uint(current_packet));
+
+    text_packets_sent.set(to_string_dec_uint(packet.packet_count));
+
+    text_mac_address.set(formattedMacAddress);
+
+    packet_counter = packet.packet_count;
+    current_packet = currentIndex;
+
+    dataFile.create(dataTempFilePath);
+
+    for (const std::string& str : strings) {
+        dataFile.write(str.c_str(), str.size());
+        dataFile.write("\n", 1);
+        ;
+    }
+
+    dataFile.~File();
+
+    auto result = FileWrapper::open(dataTempFilePath);
+
+    if (!result)
+        return;
+
+    dataFileWrapper = *std::move(result);
+
+    dataEditView.set_font_zoom(true);
+    dataEditView.set_file(*dataFileWrapper);
+    dataEditView.redraw(true, true);
+}
+
+void BLETxView::set_parent_rect(const Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+    const Rect content_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height - switch_button_height};
+    dataEditView.set_parent_rect(content_rect);
+}
+
+BLETxView::~BLETxView() {
+    delete_file(dataTempFilePath);
+    transmitter_model.disable();
+    baseband::shutdown();
+}
+
+} /* namespace ui */
@@ -0,0 +1,337 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 TJ Baginski
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __BLE_TX_APP_H__
+#define __BLE_TX_APP_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_transmitter.hpp"
+#include "ui_text_editor.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "replay_thread.hpp"
+#include "log_file.hpp"
+#include "utility.hpp"
+
+#include "recent_entries.hpp"
+
+#include <string>
+#include <memory>
+
+class BLELoggerTx {
+   public:
+    Optional<File::Error> append(const std::string& filename) {
+        return log_file.append(filename);
+    }
+
+    void log_raw_data(const std::string& data);
+
+   private:
+    LogFile log_file{};
+};
+
+namespace ui {
+
+enum PKT_TYPE {
+    PKT_TYPE_INVALID_TYPE,
+    PKT_TYPE_RAW,
+    PKT_TYPE_DISCOVERY,
+    PKT_TYPE_IBEACON,
+    PKT_TYPE_ADV_IND,
+    PKT_TYPE_ADV_DIRECT_IND,
+    PKT_TYPE_ADV_NONCONN_IND,
+    PKT_TYPE_ADV_SCAN_IND,
+    PKT_TYPE_SCAN_REQ,
+    PKT_TYPE_SCAN_RSP,
+    PKT_TYPE_CONNECT_REQ,
+    PKT_TYPE_LL_DATA,
+    PKT_TYPE_LL_CONNECTION_UPDATE_REQ,
+    PKT_TYPE_LL_CHANNEL_MAP_REQ,
+    PKT_TYPE_LL_TERMINATE_IND,
+    PKT_TYPE_LL_ENC_REQ,
+    PKT_TYPE_LL_ENC_RSP,
+    PKT_TYPE_LL_START_ENC_REQ,
+    PKT_TYPE_LL_START_ENC_RSP,
+    PKT_TYPE_LL_UNKNOWN_RSP,
+    PKT_TYPE_LL_FEATURE_REQ,
+    PKT_TYPE_LL_FEATURE_RSP,
+    PKT_TYPE_LL_PAUSE_ENC_REQ,
+    PKT_TYPE_LL_PAUSE_ENC_RSP,
+    PKT_TYPE_LL_VERSION_IND,
+    PKT_TYPE_LL_REJECT_IND,
+    PKT_TYPE_NUM_PKT_TYPE
+};
+
+struct BLETxPacket {
+    char macAddress[13];
+    char advertisementData[63];
+    char packetCount[11];
+    uint32_t packet_count;
+    PKT_TYPE packetType;
+};
+
+class BLETxView : public View {
+   public:
+    BLETxView(NavigationView& nav);
+    BLETxView(NavigationView& nav, BLETxPacket packet);
+    ~BLETxView();
+
+    void set_parent_rect(const Rect new_parent_rect) override;
+    void paint(Painter&) override{};
+
+    void focus() override;
+
+    bool is_active() const;
+    void toggle();
+    void start();
+    void stop();
+    void reset();
+    void handle_replay_thread_done(const uint32_t return_code);
+    void file_error();
+    bool saveFile(const std::filesystem::path& path);
+
+    std::string title() const override { return "BLE TX"; };
+
+   private:
+    void on_timer();
+    void on_data(uint32_t value, bool is_data);
+    void on_file_changed(const std::filesystem::path& new_file_path);
+    void on_save_file(const std::string value);
+    void on_tx_progress(const bool done);
+    void on_random_data_change(std::string value);
+    void update_current_packet(BLETxPacket packet, uint32_t currentIndex);
+
+    NavigationView& nav_;
+    TxRadioState radio_state_{
+        2'402'000'000 /* frequency */,
+        4'000'000 /* bandwidth */,
+        4'000'000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_ble", app_settings::Mode::TX};
+
+    uint8_t console_color{0};
+    uint32_t prev_value{0};
+
+    std::filesystem::path file_path{};
+    std::filesystem::path packet_save_path{u"BLETX/BLETX_????.TXT"};
+    uint8_t channel_number = 37;
+    bool auto_channel = false;
+
+    char randomMac[13] = "010203040506";
+
+    bool is_running = false;
+
+    int16_t timer_count{0};
+    int16_t timer_period{1};
+    int16_t auto_channel_counter = 0;
+    int16_t auto_channel_period{6};
+
+    bool repeatLoop = false;
+    uint32_t packet_counter{0};
+    uint32_t num_packets{0};
+    uint32_t current_packet{0};
+    bool random_mac = false;
+    bool file_override = false;
+
+    typedef struct {
+        uint16_t line;
+        uint16_t col;
+    } CursorPos;
+
+    std::unique_ptr<FileWrapper> dataFileWrapper{};
+    File dataFile{};
+    std::filesystem::path dataTempFilePath{u"BLETX/dataFileTemp.TXT"};
+    std::vector<uint16_t> markedBytes{};
+    CursorPos cursor_pos{};
+    uint8_t marked_counter = 0;
+
+    static constexpr uint8_t mac_address_size_str{12};
+    static constexpr uint8_t max_packet_size_str{62};
+    static constexpr uint8_t max_packet_repeat_str{10};
+    static constexpr uint32_t max_packet_repeat_count{UINT32_MAX};
+    static constexpr uint32_t max_num_packets{32};
+
+    BLETxPacket packets[max_num_packets];
+
+    PKT_TYPE pduType = {PKT_TYPE_DISCOVERY};
+
+    static constexpr auto header_height = 10 * 16;
+    static constexpr auto switch_button_height = 6 * 16;
+
+    Button button_open{
+        {0 * 8, 0 * 16, 10 * 8, 2 * 16},
+        "Open file"};
+
+    Text text_filename{
+        {11 * 8, 0 * 16, 12 * 8, 16},
+        "-"};
+
+    ProgressBar progressbar{
+        {11 * 8, 1 * 16, 9 * 8, 16}};
+
+    Checkbox check_rand_mac{
+        {21 * 8, 1 * 16},
+        6,
+        "?? Mac",
+        true};
+
+    TxFrequencyField field_frequency{
+        {0 * 8, 2 * 16},
+        nav_};
+
+    TransmitterView2 tx_view{
+        {11 * 8, 2 * 16},
+        /*short_ui*/ true};
+
+    Checkbox check_loop{
+        {21 * 8, 2 * 16},
+        4,
+        "Loop",
+        true};
+
+    ImageButton button_play{
+        {28 * 8, 2 * 16, 2 * 8, 1 * 16},
+        &bitmap_play,
+        Color::green(),
+        Color::black()};
+
+    Labels label_speed{
+        {{0 * 8, 6 * 8}, "Speed:", Color::light_grey()}};
+
+    OptionsField options_speed{
+        {7 * 8, 6 * 8},
+        3,
+        {{"1 ", 1},     // 16ms
+         {"2 ", 2},     // 32ms
+         {"3 ", 3},     // 48ms
+         {"4 ", 6},     // 100ms
+         {"5 ", 12}}};  // 200ms
+
+    OptionsField options_channel{
+        {11 * 8, 6 * 8},
+        5,
+        {{"Ch.37 ", 37},
+         {"Ch.38", 38},
+         {"Ch.39", 39},
+         {"Auto", 40}}};
+
+    OptionsField options_adv_type{
+        {17 * 8, 6 * 8},
+        14,
+        {{"DISCOVERY ", PKT_TYPE_DISCOVERY},
+         {"ADV_IND", PKT_TYPE_ADV_IND},
+         {"ADV_DIRECT", PKT_TYPE_ADV_DIRECT_IND},
+         {"ADV_NONCONN", PKT_TYPE_ADV_NONCONN_IND},
+         {"ADV_SCAN_IND", PKT_TYPE_ADV_SCAN_IND},
+         {"SCAN_REQ", PKT_TYPE_SCAN_REQ},
+         {"SCAN_RSP", PKT_TYPE_SCAN_RSP},
+         {"CONNECT_REQ", PKT_TYPE_CONNECT_REQ}}};
+
+    Labels label_marked_data{
+        {{0 * 8, 4 * 16}, "Marked Data:", Color::light_grey()}};
+
+    OptionsField marked_data_sequence{
+        {12 * 8, 8 * 8},
+        8,
+        {{"Ascend", 0},
+         {"Descend", 1},
+         {"Random", 2}}};
+
+    Labels label_packet_index{
+        {{0 * 8, 12 * 8}, "Packet Index:", Color::light_grey()}};
+
+    Text text_packet_index{
+        {13 * 8, 6 * 16, 12 * 8, 16},
+        "-"};
+
+    Labels label_packets_sent{
+        {{0 * 8, 14 * 8}, "Repeat Count:", Color::light_grey()}};
+
+    Text text_packets_sent{
+        {13 * 8, 7 * 16, 12 * 8, 16},
+        "-"};
+
+    Labels label_mac_address{
+        {{0 * 8, 16 * 8}, "Mac Address:", Color::light_grey()}};
+
+    Text text_mac_address{
+        {12 * 8, 8 * 16, 20 * 8, 16},
+        "-"};
+
+    Labels label_data_packet{
+        {{0 * 8, 9 * 16}, "Packet Data:", Color::light_grey()}};
+
+    Console console{
+        {0, 9 * 18, 240, 240}};
+
+    TextViewer dataEditView{
+        {0, 9 * 18, 240, 240}};
+
+    Button button_clear_marked{
+        {1 * 8, 14 * 16, 13 * 8, 3 * 8},
+        "Clear Marked"};
+
+    Button button_save_packet{
+        {1 * 8, 16 * 16, 13 * 8, 2 * 16},
+        "Save Packet"};
+
+    Button button_switch{
+        {16 * 8, 16 * 16, 13 * 8, 2 * 16},
+        "Switch to Rx"};
+
+    std::string str_log{""};
+    bool logging{true};
+    bool logging_done{false};
+    std::string packetFileBuffer{};
+
+    std::unique_ptr<BLELoggerTx> logger{};
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::AFSKData,
+        [this](Message* const p) {
+            const auto message = static_cast<const AFSKDataMessage*>(p);
+            this->on_data(message->value, message->is_data);
+        }};
+
+    MessageHandlerRegistration message_handler_tx_progress{
+        Message::ID::TXProgress,
+        [this](const Message* const p) {
+            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
+            this->on_tx_progress(message.done);
+        }};
+
+    MessageHandlerRegistration message_handler_frame_sync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) {
+            this->on_timer();
+        }};
+};
+
+} /* namespace ui */
+
+#endif /*__UI_AFSK_RX_H__*/
@@ -21,15 +21,16 @@
 */

 #include "capture_app.hpp"
-
 #include "baseband_api.hpp"
-
 #include "portapack.hpp"
+#include "ui_freqman.hpp"
+
 using namespace portapack;

 namespace ui {

-CaptureAppView::CaptureAppView(NavigationView& nav) {
+CaptureAppView::CaptureAppView(NavigationView& nav)
+    : nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_capture);

    add_children({
@@ -42,90 +43,61 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
        &field_lna,
        &field_vga,
        &option_bandwidth,
+        &option_format,
+        &check_trim,
        &record_view,
        &waterfall,
    });

-    // Hack for initialization
-    // TODO: This should be included in a more global section so apps dont need to do it
-    receiver_model.set_sampling_rate(3072000);
-    receiver_model.set_baseband_bandwidth(1750000);
-    //-------------------
-
-    field_frequency.set_value(receiver_model.tuning_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_change = [this](rf::Frequency f) {
-        this->on_tuning_frequency_changed(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->on_tuning_frequency_changed(f);
-            this->field_frequency.set_value(f);
-        };
-    };
-
    field_frequency_step.set_by_value(receiver_model.frequency_step());
    field_frequency_step.on_change = [this](size_t, OptionsField::value_t v) {
        receiver_model.set_frequency_step(v);
        this->field_frequency.set_step(v);
    };

-    option_bandwidth.on_change = [this](size_t, uint32_t base_rate) {
-        sampling_rate = 8 * base_rate;  // Decimation by 8 done on baseband side
-                                        /* base_rate  is used for FFT calculation and display LCD, and also in  recording writing SD Card  rate. */
-        /* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz , when selected 1 Mhz BW ...*/
-        /* ex. recording 500kHz BW  to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card  */
-
-        waterfall.on_hide();
-        record_view.set_sampling_rate(sampling_rate);
-        receiver_model.set_sampling_rate(sampling_rate);
-        /* Set up  proper anti aliasing BPF bandwith in MAX2837 before ADC sampling according to the new added BW Options . */
-
-        switch (sampling_rate) {  // we use the var fs (sampling_rate) , to set up BPF aprox < fs_max/2 by Nyquist theorem.
-
-            case 0 ... 2000000:                                  // BW Captured range  (0 <= 250kHz max )  fs = 8 x 250 kHz
-                anti_alias_baseband_bandwidth_filter = 1750000;  // Minimum BPF MAX2837 for all those lower BW options.
-                break;
-
-            case 4000000 ... 6000000:                            // BW capture  range (500k ... 750kHz max )  fs_max = 8 x 750kHz = 6Mhz
-                                                                 //  BW 500k ... 750kHz   ,  ex. 500kHz   (fs = 8*BW =  4Mhz) , BW 600kHz (fs = 4,8Mhz) , BW  750 kHz (fs = 6Mhz)
-                anti_alias_baseband_bandwidth_filter = 2500000;  // in some IC MAX2837 appear 2250000 , but both works similar.
-                break;
-
-            case 8800000:  // BW capture 1,1Mhz  fs = 8 x 1,1Mhz = 8,8Mhz . (1Mhz showed slightly higher noise background).
-                anti_alias_baseband_bandwidth_filter = 3500000;
-                break;
-
-            case 14000000:  // BW capture 1,75Mhz  , fs = 8 x 1,75Mhz = 14Mhz
-                            // good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture
-                anti_alias_baseband_bandwidth_filter = 5000000;
-                break;
-
-            case 16000000:  // BW capture 2Mhz  , fs = 8 x 2Mhz = 16Mhz
-                            //  good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture
-                anti_alias_baseband_bandwidth_filter = 6000000;
-                break;
-
-            case 20000000:  // BW capture 2,5Mhz  , fs= 8 x 2,5 Mhz = 20Mhz
-                            //  good BPF ,good matching, but LCD making flicker , refresh rate should be < 20 Hz , but reasonable picture
-                anti_alias_baseband_bandwidth_filter = 7000000;
-                break;
-
-            default:  // BW capture 2,75Mhz, fs = 8 x 2,75Mhz= 22Mhz max ADC sampling)  and others.
-                      //  We tested also 9Mhz FPB stightly too much noise floor , better 8Mhz
-                anti_alias_baseband_bandwidth_filter = 8000000;
-        }
-        receiver_model.set_baseband_bandwidth(anti_alias_baseband_bandwidth_filter);
-
-        waterfall.on_show();
+    option_format.set_selected_index(0);  // Default to C16
+    option_format.on_change = [this](size_t, uint32_t file_type) {
+        record_view.set_file_type((RecordView::FileType)file_type);
    };

-    option_bandwidth.set_selected_index(7);  // 500k,  Preselected starting default option 500kHz
+    check_trim.on_select = [this](Checkbox&, bool v) {
+        record_view.set_auto_trim(v);
+    };
+
+    freqman_set_bandwidth_option(SPEC_MODULATION, option_bandwidth);
+    option_bandwidth.on_change = [this](size_t, uint32_t bandwidth) {
+        /* Nyquist would imply a sample rate of 2x bandwidth, but because the ADC
+         * provides 2 values (I,Q), the sample_rate is equal to bandwidth here. */
+        auto sample_rate = bandwidth;
+
+        /* base_rate (bandwidth) is used for FFT calculation and display LCD, and also in recording writing SD Card rate. */
+        /* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz, when selected 1 Mhz BW ... */
+        /* ex. recording 500kHz BW to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card. */
+
+        waterfall.stop();
+
+        // record_view determines the correct oversampling to apply and returns the actual sample rate.
+        // NB: record_view is what actually updates proc_capture baseband settings.
+        auto actual_sample_rate = record_view.set_sampling_rate(sample_rate);
+
+        // Update the radio model with the actual sampling rate.
+        receiver_model.set_sampling_rate(actual_sample_rate);
+
+        // Get suitable anti-aliasing BPF bandwidth for MAX2837 given the actual sample rate.
+        auto anti_alias_filter_bandwidth = filter_bandwidth_for_sampling_rate(actual_sample_rate);
+        receiver_model.set_baseband_bandwidth(anti_alias_filter_bandwidth);
+
+        // Automatically switch default capture format to C8 when bandwidth setting is increased to >=1.5MHz
+        if ((bandwidth >= 1500000) && (previous_bandwidth < 1500000)) {
+            option_format.set_selected_index(1);
+        }
+        previous_bandwidth = bandwidth;
+
+        waterfall.start();
+    };

-    receiver_model.set_modulation(ReceiverModel::Mode::Capture);
    receiver_model.enable();
+    option_bandwidth.set_by_value(500000);

    record_view.on_error = [&nav](std::string message) {
        nav.display_modal("Error", message);
@@ -133,28 +105,14 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
 }

 CaptureAppView::~CaptureAppView() {
-    // Hack for preventing halting other apps
-    // TODO: This should be also part of something global
-    receiver_model.set_sampling_rate(3072000);
-    receiver_model.set_baseband_bandwidth(1750000);
-    receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
-    // ----------------------------
-
    receiver_model.disable();
    baseband::shutdown();
 }

-void CaptureAppView::on_hide() {
-    // TODO: Terrible kludge because widget system doesn't notify Waterfall that
-    // it's being shown or hidden.
-    waterfall.on_hide();
-    View::on_hide();
-}
-
 void CaptureAppView::set_parent_rect(const Rect new_parent_rect) {
    View::set_parent_rect(new_parent_rect);

-    const ui::Rect waterfall_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};
+    ui::Rect waterfall_rect{0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};
    waterfall.set_parent_rect(waterfall_rect);
 }

@@ -162,8 +120,4 @@ void CaptureAppView::focus() {
    record_view.focus();
 }

-void CaptureAppView::on_tuning_frequency_changed(rf::Frequency f) {
-    receiver_model.set_tuning_frequency(f);
-}
-
 } /* namespace ui */
@@ -26,25 +26,11 @@
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "ui_record_view.hpp"
 #include "ui_spectrum.hpp"
-
-#define BW_OPTIONS                                                                                                                 \
-    {"  8k5", 8500},                                                                                                               \
-        {"  11k", 11000},                                                                                                          \
-        {"  16k", 16000},                                                                                                          \
-        {"  25k", 25000},                                                                                                          \
-        {"  50k", 50000},                                                                                                          \
-        {" 100k", 100000},                                                                                                         \
-        {" 250k", 250000},                                                                                                         \
-        {" 500k", 500000}, /* Previous Limit bandwith Option with perfect micro SD write .C16 format operaton.*/                   \
-        {" 600k", 600000}, /* That extended option is still possible to record with FW version Mayhem v1.41 (< 2,5MB/sec)  */      \
-        {" 750k", 750000}, /* From that BW onwards, the LCD is ok, but the recorded file is auto decimated,(not real file size) */ \
-        {"1100k", 1100000},                                                                                                        \
-        {"1750k", 1750000},                                                                                                        \
-        {"2000k", 2000000},                                                                                                        \
-        {"2500k", 2500000},                                                                                                        \
-        {"2750k", 2750000},  // That is our max Capture option , to keep using later / 8 decimation (22Mhz sampling  ADC)
+#include "app_settings.hpp"
+#include "radio_state.hpp"

 namespace ui {

@@ -53,41 +39,38 @@ class CaptureAppView : public View {
    CaptureAppView(NavigationView& nav);
    ~CaptureAppView();

-    void on_hide() override;
-
-    void set_parent_rect(const Rect new_parent_rect) override;
-
    void focus() override;
+    void set_parent_rect(const Rect new_parent_rect) override;

    std::string title() const override { return "Capture"; };

   private:
    static constexpr ui::Dim header_height = 3 * 16;
+    uint32_t previous_bandwidth{500000};

-    uint32_t sampling_rate = 0;
-    uint32_t anti_alias_baseband_bandwidth_filter = 2500000;  // we rename the previous var , and change type static constexpr to normal var.
-
-    void on_tuning_frequency_changed(rf::Frequency f);
+    NavigationView& nav_;
+    RxRadioState radio_state_{ReceiverModel::Mode::Capture};
+    app_settings::SettingsManager settings_{
+        "rx_capture", app_settings::Mode::RX,
+        app_settings::Options::UseGlobalTargetFrequency};

    Labels labels{
        {{0 * 8, 1 * 16}, "Rate:", Color::light_grey()},
+        {{11 * 8, 1 * 16}, "Format:", Color::light_grey()},
    };

    RSSI rssi{
-        {24 * 8, 0, 6 * 8, 4},
-    };
+        {24 * 8, 0, 6 * 8, 4}};

    Channel channel{
-        {24 * 8, 5, 6 * 8, 4},
-    };
+        {24 * 8, 5, 6 * 8, 4}};

-    FrequencyField field_frequency{
+    RxFrequencyField field_frequency{
        {0 * 8, 0 * 16},
-    };
+        nav_};

    FrequencyStepView field_frequency_step{
-        {10 * 8, 0 * 16},
-    };
+        {10 * 8, 0 * 16}};

    RFAmpField field_rf_amp{
        {16 * 8, 0 * 16}};
@@ -101,7 +84,19 @@ class CaptureAppView : public View {
    OptionsField option_bandwidth{
        {5 * 8, 1 * 16},
        5,
-        {BW_OPTIONS}};
+        {}};
+
+    OptionsField option_format{
+        {18 * 8, 1 * 16},
+        3,
+        {{"C16", RecordView::FileType::RawS16},
+         {"C8", RecordView::FileType::RawS8}}};
+
+    Checkbox check_trim{
+        {23 * 8, 1 * 16},
+        4,
+        "Trim",
+        /*small*/ true};

    RecordView record_view{
        {0 * 8, 2 * 16, 30 * 8, 1 * 16},
@@ -111,7 +106,7 @@ class CaptureAppView : public View {
        16384,
        3};

-    spectrum::WaterfallWidget waterfall{};
+    spectrum::WaterfallView waterfall{};
 };

 } /* namespace ui */
@@ -65,9 +65,13 @@ std::string commodity_type(CommodityType value) {

 } /* namespace ert */

-void ERTLogger::on_packet(const ert::Packet& packet) {
+void ERTLogger::on_packet(const ert::Packet& packet, const uint32_t target_frequency) {
    const auto formatted = packet.symbols_formatted();
-    std::string entry = ert::format::type(packet.type()) + " " + formatted.data + "/" + formatted.errors;
+
+    // TODO: function doesn't take uint64_t, so when >= 1<<32, weirdness will ensue!
+    const auto target_frequency_str = to_string_dec_uint(target_frequency, 10);
+
+    std::string entry = target_frequency_str + " " + ert::format::type(packet.type()) + " " + formatted.data + "/" + formatted.errors;
    log_file.write_entry(packet.received_at(), entry);
 }

@@ -99,10 +103,12 @@ void RecentEntriesTable<ERTRecentEntries>::draw(
    painter.draw_string(target_rect.location(), style, line);
 }

-ERTAppView::ERTAppView(NavigationView&) {
+ERTAppView::ERTAppView(NavigationView& nav)
+    : nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_ert);

    add_children({
+        &field_frequency,
        &field_rf_amp,
        &field_lna,
        &field_vga,
@@ -110,17 +116,8 @@ ERTAppView::ERTAppView(NavigationView&) {
        &recent_entries_view,
    });

-    // load app settings
-    auto rc = settings.load("rx_ert", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-    }
+    field_frequency.set_step(1000000);

-    receiver_model.set_tuning_frequency(initial_target_frequency);
-    receiver_model.set_sampling_rate(sampling_rate);
-    receiver_model.set_baseband_bandwidth(baseband_bandwidth);
    receiver_model.enable();

    logger = std::make_unique<ERTLogger>();
@@ -130,11 +127,7 @@ ERTAppView::ERTAppView(NavigationView&) {
 }

 ERTAppView::~ERTAppView() {
-    // save app settings
-    settings.save("rx_ert", &app_settings);
-
    receiver_model.disable();
-
    baseband::shutdown();
 }

@@ -149,7 +142,7 @@ void ERTAppView::set_parent_rect(const Rect new_parent_rect) {

 void ERTAppView::on_packet(const ert::Packet& packet) {
    if (logger) {
-        logger->on_packet(packet);
+        logger->on_packet(packet, receiver_model.target_frequency());
    }

    if (packet.crc_ok()) {
@@ -24,11 +24,13 @@

 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "ui_rssi.hpp"
 #include "ui_channel.hpp"

 #include "event_m0.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "log_file.hpp"

 #include "ert_packet.hpp"
@@ -94,7 +96,7 @@ class ERTLogger {
        return log_file.append(filename);
    }

-    void on_packet(const ert::Packet& packet);
+    void on_packet(const ert::Packet& packet, const uint32_t target_frequency);

   private:
    LogFile log_file{};
@@ -108,10 +110,6 @@ using ERTRecentEntriesView = RecentEntriesView<ERTRecentEntries>;

 class ERTAppView : public View {
   public:
-    static constexpr uint32_t initial_target_frequency = 911600000;
-    static constexpr uint32_t sampling_rate = 4194304;
-    static constexpr uint32_t baseband_bandwidth = 2500000;
-
    ERTAppView(NavigationView& nav);
    ~ERTAppView();

@@ -129,9 +127,13 @@ class ERTAppView : public View {
    ERTRecentEntries recent{};
    std::unique_ptr<ERTLogger> logger{};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        911600000 /* frequency */,
+        2500000 /* bandwidth */,
+        4194304 /* sampling rate */};
+    app_settings::SettingsManager settings_{
+        "rx_ert", app_settings::Mode::RX};

    const RecentEntriesColumns columns{{
        {"ID", 10},
@@ -143,6 +145,10 @@ class ERTAppView : public View {

    static constexpr auto header_height = 1 * 16;

+    RxFrequencyField field_frequency{
+        {5 * 8, 0 * 16},
+        nav_};
+
    RFAmpField field_rf_amp{
        {13 * 8, 0 * 16}};

@@ -26,13 +26,15 @@

 #include "ui_fileman.hpp"
 #include "io_file.hpp"
+#include "metadata_file.hpp"
+#include "utility.hpp"

 #include "baseband_api.hpp"
 #include "portapack.hpp"
-#include "cpld_update.hpp"
 #include "portapack_persistent_memory.hpp"

 using namespace portapack;
+namespace fs = std::filesystem;

 namespace ui {

@@ -40,54 +42,42 @@ void GpsSimAppView::set_ready() {
    ready_signal = true;
 }

-void GpsSimAppView::on_file_changed(std::filesystem::path new_file_path) {
-    File data_file, info_file;
-    char file_data[257];
+void GpsSimAppView::on_file_changed(const fs::path& new_file_path) {
+    file_path = fs::path(u"/") + new_file_path;
+    File::Size file_size{};

-    // Get file size
-    auto data_open_error = data_file.open("/" + new_file_path.string());
-    if (data_open_error.is_valid()) {
-        file_error();
-        return;
-    }
-
-    file_path = new_file_path;
-
-    // Get original record frequency if available
-    std::filesystem::path info_file_path = file_path;
-    info_file_path.replace_extension(u".TXT");
-
-    sample_rate = 500000;
-
-    auto info_open_error = info_file.open("/" + info_file_path.string());
-    if (!info_open_error.is_valid()) {
-        memset(file_data, 0, 257);
-        auto read_size = info_file.read(file_data, 256);
-        if (!read_size.is_error()) {
-            auto pos1 = strstr(file_data, "center_frequency=");
-            if (pos1) {
-                pos1 += 17;
-                field_frequency.set_value(strtoll(pos1, nullptr, 10));
-            }
-
-            auto pos2 = strstr(file_data, "sample_rate=");
-            if (pos2) {
-                pos2 += 12;
-                sample_rate = strtoll(pos2, nullptr, 10);
-            }
+    {  // Get the size of the data file.
+        File data_file;
+        auto error = data_file.open(file_path);
+        if (error) {
+            file_error();
+            return;
        }
+
+        file_size = data_file.size();
    }

-    text_sample_rate.set(unit_auto_scale(sample_rate, 3, 1) + "Hz");
+    // Get original record frequency if available.
+    auto metadata_path = get_metadata_path(file_path);
+    auto metadata = read_metadata_file(metadata_path);

-    auto file_size = data_file.size();
-    auto duration = (file_size * 1000) / (1 * 2 * sample_rate);
+    if (metadata) {
+        field_frequency.set_value(metadata->center_frequency);
+        transmitter_model.set_sampling_rate(metadata->sample_rate);
+    }

-    progressbar.set_max(file_size / 1024);
-    text_filename.set(file_path.filename().string().substr(0, 12));
+    // UI Fixup.
+    text_sample_rate.set(unit_auto_scale(transmitter_model.sampling_rate(), 3, 1) + "Hz");
+    progressbar.set_max(file_size);
+    text_filename.set(truncate(file_path.filename().string(), 12));
+
+    auto duration = ms_duration(file_size, transmitter_model.sampling_rate(), 2);
    text_duration.set(to_string_time_ms(duration));

-    button_play.focus();
+    // TODO: fix in UI framework with 'try_focus()'?
+    // Hack around focus getting called by ctor before parent is set.
+    if (parent())
+        button_play.focus();
 }

 void GpsSimAppView::on_tx_progress(const uint32_t progress) {
@@ -129,7 +119,6 @@ void GpsSimAppView::start() {

    if (reader) {
        button_play.set_bitmap(&bitmap_stop);
-        baseband::set_sample_rate(sample_rate);

        replay_thread = std::make_unique<ReplayThread>(
            std::move(reader),
@@ -141,8 +130,6 @@ void GpsSimAppView::start() {
            });
    }

-    transmitter_model.set_sampling_rate(sample_rate);
-    transmitter_model.set_baseband_bandwidth(baseband_bandwidth);
    transmitter_model.enable();
 }

@@ -183,26 +170,12 @@ GpsSimAppView::GpsSimAppView(
        &text_duration,
        &progressbar,
        &field_frequency,
-        &tx_view,  // now it handles previous rfgain , rfamp.
+        &tx_view,  // now it handles previous rfgain, rfamp.
        &check_loop,
        &button_play,
        &waterfall,
    });

-    field_frequency.set_value(target_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_change = [this](rf::Frequency f) {
-        this->on_target_frequency_changed(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(this->target_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->on_target_frequency_changed(f);
-            this->field_frequency.set_value(f);
-        };
-    };
-
    field_frequency.set_step(5000);

    button_play.on_select = [this](ImageButton&) {
@@ -219,8 +192,7 @@ GpsSimAppView::GpsSimAppView(

 GpsSimAppView::~GpsSimAppView() {
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void GpsSimAppView::on_hide() {
@@ -239,17 +211,4 @@ void GpsSimAppView::set_parent_rect(const Rect new_parent_rect) {
    waterfall.set_parent_rect(waterfall_rect);
 }

-void GpsSimAppView::on_target_frequency_changed(rf::Frequency f) {
-    set_target_frequency(f);
-}
-
-void GpsSimAppView::set_target_frequency(const rf::Frequency new_value) {
-    persistent_memory::set_tuned_frequency(new_value);
-    ;
-}
-
-rf::Frequency GpsSimAppView::target_frequency() const {
-    return persistent_memory::tuned_frequency();
-}
-
 } /* namespace ui */
@@ -24,18 +24,18 @@
 #ifndef __GPS_SIM_APP_HPP__
 #define __GPS_SIM_APP_HPP__

-#define SHORT_UI true
-#define NORMAL_UI false
-
+#include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "replay_thread.hpp"
 #include "ui_spectrum.hpp"
+#include "ui_transmitter.hpp"

 #include <string>
 #include <memory>
-#include "ui_transmitter.hpp"

 namespace ui {

@@ -52,23 +52,22 @@ class GpsSimAppView : public View {

   private:
    NavigationView& nav_;
+    TxRadioState radio_state_{
+        1575420000 /* frequency */,
+        15000000 /* bandwidth */,
+        2600000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_gps", app_settings::Mode::TX};

    static constexpr ui::Dim header_height = 3 * 16;

-    uint32_t sample_rate = 0;
-    int32_t tx_gain{47};
-    bool rf_amp{true};                                       // aux private var to store temporal, same as Replay App rf_amp user selection.
-    static constexpr uint32_t baseband_bandwidth = 3000000;  // filter bandwidth
    const size_t read_size{16384};
    const size_t buffer_count{3};

-    void on_file_changed(std::filesystem::path new_file_path);
-    void on_target_frequency_changed(rf::Frequency f);
+    void on_file_changed(const std::filesystem::path& new_file_path);
    void on_tx_progress(const uint32_t progress);

-    void set_target_frequency(const rf::Frequency new_value);
-    rf::Frequency target_frequency() const;
-
    void toggle();
    void start();
    void stop(const bool do_loop);
@@ -98,15 +97,13 @@ class GpsSimAppView : public View {
    ProgressBar progressbar{
        {18 * 8, 1 * 16, 12 * 8, 16}};

-    FrequencyField field_frequency{
+    TxFrequencyField field_frequency{
        {0 * 8, 2 * 16},
-    };
+        nav_};

    TransmitterView2 tx_view{
-        // new handling of NumberField field_rfgain, NumberField field_rfamp
-        74, 1 * 8, SHORT_UI  // x(columns), y (line) position. (Used in Replay / GPS Simul / Playlist App)
-                             //		10*8, 2*8, NORMAL_UI				// x(columns), y (line) position. (Used in Mic App)
-    };
+        {11 * 8, 2 * 16},
+        /*short_ui*/ true};

    Checkbox check_loop{
        {21 * 8, 2 * 16},
@@ -119,7 +116,7 @@ class GpsSimAppView : public View {
        Color::green(),
        Color::black()};

-    spectrum::WaterfallWidget waterfall{};
+    spectrum::WaterfallView waterfall{};

    MessageHandlerRegistration message_handler_replay_thread_error{
        Message::ID::ReplayThreadDone,
@@ -22,15 +22,15 @@

 #include "pocsag_app.hpp"

+#include "audio.hpp"
 #include "baseband_api.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "string_format.hpp"
+#include "utility.hpp"

 using namespace portapack;
 using namespace pocsag;
-
-#include "string_format.hpp"
-#include "utility.hpp"
-#include "audio.hpp"
+namespace pmem = portapack::persistent_memory;

 void POCSAGLogger::log_raw_data(const pocsag::POCSAGPacket& packet, const uint32_t frequency) {
    std::string entry = "Raw: F:" + to_string_dec_uint(frequency) + "Hz " +
@@ -43,178 +43,309 @@ void POCSAGLogger::log_raw_data(const pocsag::POCSAGPacket& packet, const uint32
    log_file.write_entry(packet.timestamp(), entry);
 }

-void POCSAGLogger::log_decoded(
-    const pocsag::POCSAGPacket& packet,
-    const std::string text) {
-    log_file.write_entry(packet.timestamp(), text);
+void POCSAGLogger::log_decoded(Timestamp timestamp, const std::string& text) {
+    log_file.write_entry(timestamp, text);
 }

 namespace ui {

-void POCSAGAppView::update_freq(rf::Frequency f) {
-    set_target_frequency(f);
-    portapack::persistent_memory::set_tuned_frequency(f);  // Maybe not ?
+POCSAGSettingsView::POCSAGSettingsView(
+    NavigationView& nav,
+    POCSAGSettings& settings)
+    : settings_{settings} {
+    add_children(
+        {&labels,
+         &check_log,
+         &check_log_raw,
+         &check_small_font,
+         &check_hide_bad,
+         &check_hide_addr_only,
+         &opt_filter_mode,
+         &field_filter_address,
+         &button_save});
+
+    check_log.set_value(settings_.enable_logging);
+    check_log_raw.set_value(settings_.enable_raw_log);
+    check_small_font.set_value(settings_.enable_small_font);
+    check_hide_bad.set_value(settings_.hide_bad_data);
+    check_hide_addr_only.set_value(settings_.hide_addr_only);
+    opt_filter_mode.set_by_value(settings_.filter_mode);
+    field_filter_address.set_value(settings_.filter_address);
+
+    button_save.on_select = [this, &nav](Button&) {
+        settings_.enable_logging = check_log.value();
+        settings_.enable_raw_log = check_log_raw.value();
+        settings_.enable_small_font = check_small_font.value();
+        settings_.hide_bad_data = check_hide_bad.value();
+        settings_.hide_addr_only = check_hide_addr_only.value();
+        settings_.filter_mode = opt_filter_mode.selected_index_value();
+        settings_.filter_address = field_filter_address.to_integer();
+
+        nav.pop();
+    };
 }

-POCSAGAppView::POCSAGAppView(NavigationView& nav) {
-    uint32_t ignore_address;
+POCSAGAppView::POCSAGAppView(NavigationView& nav)
+    : nav_{nav} {
+    baseband::run_image(portapack::spi_flash::image_tag_pocsag2);

-    baseband::run_image(portapack::spi_flash::image_tag_pocsag);
+    add_children(
+        {&rssi,
+         &audio,
+         &field_rf_amp,
+         &field_lna,
+         &field_vga,
+         &field_frequency,
+         &field_squelch,
+         &field_volume,
+         &image_status,
+         &text_packet_count,
+         &widget_baud,
+         &widget_bits,
+         &widget_frames,
+         &button_filter_last,
+         &button_config,
+         &console});

-    add_children({&rssi,
-                  &channel,
-                  &audio,
-                  &field_rf_amp,
-                  &field_lna,
-                  &field_vga,
-                  &field_frequency,
-                  &check_log,
-                  &field_volume,
-                  &check_ignore,
-                  &sym_ignore,
-                  &console});
-
-    // Set on_change before initialising the field
-    field_frequency.on_change = [this](rf::Frequency f) {
-        update_freq(f);
-    };
-
-    // load app settings TODO: needed?
-    auto rc = settings.load("rx_pocsag", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-        field_frequency.set_value(app_settings.rx_frequency);
-    } else {
-        field_lna.set_value(receiver_model.lna());
-        field_vga.set_value(receiver_model.vga());
-        field_rf_amp.set_value(receiver_model.rf_amp());
-        field_frequency.set_value(receiver_model.tuning_frequency());
+    // No app settings, use fallbacks from pmem.
+    if (!app_settings_.loaded()) {
+        settings_.filter_address = pmem::pocsag_ignore_address();
+        settings_.filter_mode = (settings_.filter_address == 0)
+                                    ? FILTER_NONE
+                                    : FILTER_DROP;
    }

-    receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
-    receiver_model.set_sampling_rate(3072000);
-    receiver_model.set_baseband_bandwidth(1750000);
-    receiver_model.enable();
+    logger.append(LOG_ROOT_DIR "/POCSAG.TXT");

-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            update_freq(f);
-            field_frequency.set_value(f);
-        };
+    field_squelch.set_value(receiver_model.squelch_level());
+    field_squelch.on_change = [this](int32_t v) {
+        receiver_model.set_squelch_level(v);
    };

-    // TODO app setting instead?
-    ignore_address = persistent_memory::pocsag_ignore_address();
+    button_filter_last.on_select = [this](Button&) {
+        if (settings_.filter_mode == FILTER_NONE)
+            settings_.filter_mode = FILTER_DROP;
+        settings_.filter_address = last_address;
+        refresh_ui();
+    };

-    // TODO is this common enough for a helper?
-    for (size_t c = 0; c < 7; c++) {
-        sym_ignore.set_sym(6 - c, ignore_address % 10);
-        ignore_address /= 10;
-    }
-
-    logger = std::make_unique<POCSAGLogger>();
-    if (logger)
-        logger->append(LOG_ROOT_DIR "/POCSAG.TXT");
+    button_config.on_select = [this](Button&) {
+        nav_.push<POCSAGSettingsView>(settings_);
+        nav_.set_on_pop([this]() { refresh_ui(); });
+    };

+    refresh_ui();
    audio::output::start();
-    audio::output::unmute();
-
+    receiver_model.enable();
    baseband::set_pocsag();
 }

+void POCSAGAppView::focus() {
+    field_frequency.focus();
+}
+
 POCSAGAppView::~POCSAGAppView() {
-    // save app settings
-    app_settings.rx_frequency = field_frequency.value();
-    settings.save("rx_pocsag", &app_settings);
-
    audio::output::stop();
-
-    // Save ignored address
-    persistent_memory::set_pocsag_ignore_address(sym_ignore.value_dec_u32());
-
    receiver_model.disable();
    baseband::shutdown();
+
+    // Save pmem settings.
+    pmem::set_pocsag_ignore_address(settings_.filter_address);
+    pmem::set_pocsag_last_address(last_address);  // For POCSAG TX.
+}
+
+void POCSAGAppView::refresh_ui() {
+    // Set console font style.
+    console.set_style(
+        settings_.enable_small_font
+            ? &Styles::white_small
+            : &Styles::white);
+
+    // Update filter button text.
+    std::string btn_text = "Filter Last";
+    switch (settings_.filter_mode) {
+        case FILTER_DROP:
+            btn_text = "Ignore Last";
+            break;
+
+        case FILTER_KEEP:
+            btn_text = "Keep Last";
+            break;
+
+        case FILTER_NONE:
+        default:
+            btn_text = "Filter Last";
+            break;
+    }
+    button_filter_last.set_text(btn_text);
+}
+
+bool POCSAGAppView::ignore_address(uint32_t address) const {
+    switch (settings_.filter_mode) {
+        case FILTER_DROP:
+            return address == settings_.filter_address;
+
+        case FILTER_KEEP:
+            return address != settings_.filter_address;
+
+        case FILTER_NONE:
+        default:
+            return false;
+    }
+}
+
+void POCSAGAppView::handle_decoded(Timestamp timestamp, const std::string& prefix) {
+    bool bad_data = pocsag_state.errors >= 3;
+
+    // Too many errors for reliable decode.
+    if (bad_data && hide_bad_data()) {
+        console.write("\n" STR_COLOR_MAGENTA + prefix + " Too many decode errors.");
+        last_address = 0;
+        return;
+    }
+
+    // Ignore address? TODO: could filter earlier.
+    if (ignore_address(pocsag_state.address)) {
+        console.write("\n" STR_COLOR_CYAN + prefix + " Ignored: " + to_string_dec_uint(pocsag_state.address));
+        last_address = pocsag_state.address;
+        return;
+    }
+
+    // Color indicates the message has a lot of decoding errors.
+    std::string color = bad_data ? STR_COLOR_MAGENTA : STR_COLOR_WHITE;
+
+    std::string console_info = "\n" + color + prefix;
+    console_info += " #" + to_string_dec_uint(pocsag_state.address);
+    console_info += " F" + to_string_dec_uint(pocsag_state.function);
+
+    if (pocsag_state.out_type == ADDRESS) {
+        last_address = pocsag_state.address;
+
+        if (!hide_addr_only()) {
+            console.write(console_info);
+
+            if (logging()) {
+                logger.log_decoded(
+                    timestamp,
+                    to_string_dec_uint(pocsag_state.address) +
+                        " F" + to_string_dec_uint(pocsag_state.function));
+            }
+        }
+
+    } else if (pocsag_state.out_type == MESSAGE) {
+        if (pocsag_state.address != last_address) {
+            // New message
+            last_address = pocsag_state.address;
+            console.writeln(console_info);
+            console.write(color + pocsag_state.output);
+        } else {
+            // Message continues...
+            console.write(color + pocsag_state.output);
+        }
+
+        if (logging()) {
+            logger.log_decoded(
+                timestamp,
+                to_string_dec_uint(pocsag_state.address) +
+                    " F" + to_string_dec_uint(pocsag_state.function) +
+                    " " + pocsag_state.output);
+        }
+    }
+}
+
+static Color get_status_color(const POCSAGState& state) {
+    if (state.out_type == IDLE)
+        return Color::white();
+
+    switch (state.mode) {
+        case STATE_CLEAR:
+            return Color::cyan();
+        case STATE_HAVE_ADDRESS:
+            return Color::yellow();
+        case STATE_GETTING_MSG:
+            return Color::green();
+    }
+
+    // Shouldn't get here...
+    return Color::red();
 }

 void POCSAGAppView::on_packet(const POCSAGPacketMessage* message) {
-    std::string alphanum_text = "";
+    const uint32_t roundVal = 50;
+    const uint32_t bitrate_rounded = roundVal * ((message->packet.bitrate() + (roundVal / 2)) / roundVal);
+    auto bitrate = to_string_dec_uint(bitrate_rounded);
+    auto timestamp = to_string_datetime(message->packet.timestamp(), HM);
+    auto prefix = timestamp + " " + bitrate;

-    if (message->packet.flag() != NORMAL)
-        console.writeln("\n\x1B\x0CRC ERROR: " + pocsag::flag_str(message->packet.flag()));
-    else {
-        pocsag_decode_batch(message->packet, &pocsag_state);
+    // Display packet count to be able to tell whether baseband sent a packet for a tone.
+    ++packet_count;
+    text_packet_count.set(to_string_dec_uint(packet_count));

-        if ((ignore()) && (pocsag_state.address == sym_ignore.value_dec_u32())) {
-            // Ignore (inform, but no log)
-            // console.write("\n\x1B\x03" + to_string_time(message->packet.timestamp()) +
-            //			" Ignored address " + to_string_dec_uint(pocsag_state.address));
-            return;
-        }
-        // Too many errors for reliable decode
-        if ((ignore()) && (pocsag_state.errors >= 3)) {
-            return;
-        }
+    if (logging_raw())
+        logger.log_raw_data(message->packet, receiver_model.target_frequency());

-        std::string console_info;
-        const uint32_t roundVal = 50;
-        const uint32_t bitrate = roundVal * ((message->packet.bitrate() + (roundVal / 2)) / roundVal);
-        console_info = "\n" + to_string_datetime(message->packet.timestamp(), HM);
-        console_info += " " + to_string_dec_uint(bitrate);
-        console_info += " ADDR:" + to_string_dec_uint(pocsag_state.address);
-        console_info += " F" + to_string_dec_uint(pocsag_state.function);
+    if (message->packet.flag() != NORMAL) {
+        console.writeln("\n" STR_COLOR_RED + prefix + " CRC ERROR: " + pocsag::flag_str(message->packet.flag()));
+        last_address = 0;
+    } else {
+        // Set color before to be able to see if decode gets stuck.
+        image_status.set_foreground(Color::magenta());
+        pocsag_state.codeword_index = 0;
+        pocsag_state.errors = 0;

-        // Store last received address for POCSAG TX
-        persistent_memory::set_pocsag_last_address(pocsag_state.address);
+        // Handle multiple messages (if any).
+        while (pocsag_decode_batch(message->packet, pocsag_state))
+            handle_decoded(message->packet.timestamp(), prefix);

-        if (pocsag_state.out_type == ADDRESS) {
-            // Address only
-
-            console.write(console_info);
-
-            if (logger && logging()) {
-                logger->log_decoded(message->packet, to_string_dec_uint(pocsag_state.address) +
-                                                         " F" + to_string_dec_uint(pocsag_state.function) +
-                                                         " Address only");
-            }
-
-            last_address = pocsag_state.address;
-        } else if (pocsag_state.out_type == MESSAGE) {
-            if (pocsag_state.address != last_address) {
-                // New message
-                console.writeln(console_info);
-                console.write(pocsag_state.output);
-
-                last_address = pocsag_state.address;
-            } else {
-                // Message continues...
-                console.write(pocsag_state.output);
-            }
-
-            if (logger && logging())
-                logger->log_decoded(message->packet, to_string_dec_uint(pocsag_state.address) +
-                                                         " F" + to_string_dec_uint(pocsag_state.function) +
-                                                         " Alpha: " + pocsag_state.output);
-        }
+        // Handle the remainder.
+        handle_decoded(message->packet.timestamp(), prefix);
    }

-    // TODO: make setting.
-    // Log raw data whatever it contains
-    if (logger && logging())
-        logger->log_raw_data(message->packet, target_frequency());
+    // Set status icon color to indicate state machine state.
+    image_status.set_foreground(get_status_color(pocsag_state));
 }

-void POCSAGAppView::set_target_frequency(const uint32_t new_value) {
-    target_frequency_ = new_value;
-    receiver_model.set_tuning_frequency(new_value);
+void POCSAGAppView::on_stats(const POCSAGStatsMessage* stats) {
+    widget_baud.set_rate(stats->baud_rate);
+    widget_bits.set_bits(stats->current_bits);
+    widget_frames.set_frames(stats->current_frames);
+    widget_frames.set_sync(stats->has_sync);
 }

-uint32_t POCSAGAppView::target_frequency() const {
-    return target_frequency_;
+void BaudIndicator::paint(Painter& painter) {
+    auto p = screen_pos();
+    char top = '-';
+    char bot = '-';
+
+    if (rate_ > 0) {
+        auto r = rate_ / 100;
+        top = (r / 10) + '0';
+        bot = (r % 10) + '0';
+    }
+
+    painter.draw_char(p, Styles::white_small, top);
+    painter.draw_char({p.x(), p.y() + 8}, Styles::white_small, bot);
+}
+
+void BitsIndicator::paint(Painter&) {
+    auto p = screen_pos();
+    for (size_t i = 0; i < sizeof(bits_) * 8; ++i) {
+        auto is_set = ((bits_ >> i) & 0x1) == 1;
+
+        int x = p.x() + (i / height);
+        int y = p.y() + (i % height);
+        display.draw_pixel({x, y}, is_set ? Color::white() : Color::black());
+    }
+}
+
+void FrameIndicator::paint(Painter& painter) {
+    auto p = screen_pos();
+    painter.draw_rectangle({p, {2, height}}, has_sync_ ? Color::green() : Color::grey());
+
+    for (size_t i = 0; i < height; ++i) {
+        auto p2 = p + Point{2, 15 - (int)i};
+        painter.draw_hline(p2, 2, i < frame_count_ ? Color::white() : Color::black());
+    }
 }

 } /* namespace ui */
@@ -24,13 +24,18 @@
 #define __POCSAG_APP_H__

 #include "ui_widget.hpp"
+#include "ui_freq_field.hpp"
 #include "ui_receiver.hpp"
 #include "ui_rssi.hpp"
+#include "ui_styles.hpp"

-#include "log_file.hpp"
 #include "app_settings.hpp"
+#include "log_file.hpp"
 #include "pocsag.hpp"
 #include "pocsag_packet.hpp"
+#include "radio_state.hpp"
+
+#include <functional>

 class POCSAGLogger {
   public:
@@ -39,7 +44,7 @@ class POCSAGLogger {
    }

    void log_raw_data(const pocsag::POCSAGPacket& packet, const uint32_t frequency);
-    void log_decoded(const pocsag::POCSAGPacket& packet, const std::string text);
+    void log_decoded(Timestamp timestamp, const std::string& text);

   private:
    LogFile log_file{};
@@ -47,78 +52,246 @@ class POCSAGLogger {

 namespace ui {

+class BaudIndicator : public Widget {
+   public:
+    BaudIndicator(Point position)
+        : Widget{{position, {5, height}}} {}
+
+    void paint(Painter& painter) override;
+    void set_rate(uint16_t rate) {
+        if (rate != rate_) {
+            rate_ = rate;
+            set_dirty();
+        }
+    }
+
+   private:
+    static constexpr uint8_t height = 16;
+    uint16_t rate_ = 0;
+};
+
+class BitsIndicator : public Widget {
+   public:
+    BitsIndicator(Point position)
+        : Widget{{position, {2, height}}} {}
+
+    void paint(Painter& painter) override;
+    void set_bits(uint32_t bits) {
+        if (bits != bits_) {
+            bits_ = bits;
+            set_dirty();
+        }
+    }
+
+   private:
+    static constexpr uint8_t height = 16;
+    uint32_t bits_ = 0;
+};
+
+class FrameIndicator : public Widget {
+   public:
+    FrameIndicator(Point position)
+        : Widget{{position, {4, height}}} {}
+
+    void paint(Painter& painter) override;
+    void set_frames(uint8_t frame_count) {
+        if (frame_count != frame_count_) {
+            frame_count_ = frame_count;
+            set_dirty();
+        }
+    }
+
+    void set_sync(bool has_sync) {
+        if (has_sync != has_sync_) {
+            has_sync_ = has_sync;
+            set_dirty();
+        }
+    }
+
+   private:
+    static constexpr uint8_t height = 16;
+    uint8_t frame_count_ = 0;
+    bool has_sync_ = false;
+};
+
+enum POCSAGFilter : uint8_t {
+    FILTER_NONE,
+    FILTER_DROP,
+    FILTER_KEEP
+};
+
+struct POCSAGSettings {
+    bool enable_small_font = false;
+    bool enable_logging = false;
+    bool enable_raw_log = false;
+    bool hide_bad_data = false;
+    bool hide_addr_only = false;
+    uint8_t filter_mode = false;
+    uint32_t filter_address = 0;
+};
+
+class POCSAGSettingsView : public View {
+   public:
+    POCSAGSettingsView(NavigationView& nav, POCSAGSettings& settings);
+
+    std::string title() const override { return "POCSAG Config"; };
+    void focus() override { button_save.focus(); }
+
+   private:
+    POCSAGSettings& settings_;
+
+    Labels labels{
+        {{2 * 8, 12 * 16}, "Filter Mode:", Color::light_grey()},
+        {{2 * 8, 13 * 16}, "Filter Addr:", Color::light_grey()},
+    };
+
+    Checkbox check_log{
+        {2 * 8, 2 * 16},
+        10,
+        "Enable Log"};
+
+    Checkbox check_log_raw{
+        {2 * 8, 4 * 16},
+        12,
+        "Log Raw Data"};
+
+    Checkbox check_small_font{
+        {2 * 8, 6 * 16},
+        4,
+        "Use Small Font"};
+
+    Checkbox check_hide_bad{
+        {2 * 8, 8 * 16},
+        22,
+        "Hide Bad Data"};
+
+    Checkbox check_hide_addr_only{
+        {2 * 8, 10 * 16},
+        22,
+        "Hide Addr Only"};
+
+    OptionsField opt_filter_mode{
+        {15 * 8, 12 * 16},
+        4,
+        {{"None", FILTER_NONE},
+         {"Drop", FILTER_DROP},
+         {"Keep", FILTER_KEEP}}};
+
+    SymField field_filter_address{
+        {15 * 8, 13 * 16},
+        7,
+        SymField::Type::Dec,
+        true /*explicit_edit*/};
+
+    Button button_save{
+        {11 * 8, 16 * 16, 10 * 8, 2 * 16},
+        "Save"};
+};
+
 class POCSAGAppView : public View {
   public:
    POCSAGAppView(NavigationView& nav);
    ~POCSAGAppView();

    std::string title() const override { return "POCSAG RX"; };
+    void focus() override;

   private:
-    static constexpr uint32_t initial_target_frequency = 466175000;
+    bool logging() const { return settings_.enable_logging; };
+    bool logging_raw() const { return settings_.enable_raw_log; };
+    bool hide_bad_data() const { return settings_.hide_bad_data; };
+    bool hide_addr_only() const { return settings_.hide_addr_only; };

-    bool logging() const { return check_log.value(); };
-    bool ignore() const { return check_ignore.value(); };
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        466175000 /* frequency*/,
+        max283x::filter::bandwidth_minimum /* bandwidth */,
+        3072000 /* sampling rate */
+    };

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    // Settings
+    POCSAGSettings settings_{};
+    app_settings::SettingsManager app_settings_{
+        "rx_pocsag"sv,
+        app_settings::Mode::RX,
+        {
+            {"small_font"sv, &settings_.enable_small_font},
+            {"enable_logging"sv, &settings_.enable_logging},
+            {"enable_raw_log"sv, &settings_.enable_raw_log},
+            {"filter_mode"sv, &settings_.filter_mode},
+            {"filter_address"sv, &settings_.filter_address},
+            {"hide_bad_data"sv, &settings_.hide_bad_data},
+            {"hide_addr_only"sv, &settings_.hide_addr_only},
+        }};

-    uint32_t last_address = 0xFFFFFFFF;
-    pocsag::POCSAGState pocsag_state{};
+    void refresh_ui();
+    bool ignore_address(uint32_t address) const;
+    void handle_decoded(Timestamp timestamp, const std::string& prefix);
+    void on_packet(const POCSAGPacketMessage* message);
+    void on_stats(const POCSAGStatsMessage* stats);
+
+    uint32_t last_address = 0;
+    pocsag::EccContainer ecc{};
+    pocsag::POCSAGState pocsag_state{&ecc};
+    POCSAGLogger logger{};
+    uint16_t packet_count = 0;
+
+    RxFrequencyField field_frequency{
+        {0 * 8, 0 * 8},
+        nav_};

    RFAmpField field_rf_amp{
-        {13 * 8, 0 * 16}};
+        {11 * 8, 0 * 16}};
    LNAGainField field_lna{
-        {15 * 8, 0 * 16}};
+        {13 * 8, 0 * 16}};
    VGAGainField field_vga{
-        {18 * 8, 0 * 16}};
+        {16 * 8, 0 * 16}};
+
    RSSI rssi{
-        {21 * 8, 0, 6 * 8, 4},
-    };
-    Channel channel{
-        {21 * 8, 5, 6 * 8, 4},
-    };
+        {19 * 8 - 4, 3, 6 * 8, 4}};
    Audio audio{
-        {21 * 8, 10, 6 * 8, 4},
-    };
-
-    FrequencyField field_frequency{
-        {0 * 8, 0 * 8},
-    };
+        {19 * 8 - 4, 8, 6 * 8, 4}};

+    NumberField field_squelch{
+        {25 * 8, 0 * 16},
+        2,
+        {0, 99},
+        1,
+        ' ',
+        true /*wrap*/};
    AudioVolumeField field_volume{
        {28 * 8, 0 * 16}};

-    Checkbox check_ignore{
-        {0 * 8, 21},
-        8,
-        "Ign addr",
-        false};
-    SymField sym_ignore{
-        {13 * 8, 25},
-        7,
-        SymField::SYMFIELD_DEC};
+    Image image_status{
+        {0 * 8 + 4, 1 * 16 + 2, 16, 16},
+        &bitmap_icon_pocsag,
+        Color::white(),
+        Color::black()};

-    Checkbox check_log{
-        {240 - 8 * 8, 21},
-        3,
-        "Log",
-        false};
+    Text text_packet_count{
+        {3 * 8, 1 * 16 + 2, 5 * 8, 16},
+        "0"};

+    BitsIndicator widget_bits{
+        {8 * 8 + 1, 1 * 16 + 2}};
+
+    FrameIndicator widget_frames{
+        {8 * 8 + 4, 1 * 16 + 2}};
+
+    BaudIndicator widget_baud{
+        {8 * 9 + 1, 1 * 16 + 2}};
+
+    Button button_filter_last{
+        {10 * 8, 1 * 16, 12 * 8, 20},
+        "Filter Last"};
+
+    Button button_config{
+        {22 * 8, 1 * 16, 8 * 8, 20},
+        "Config"};
+
+    // 54 == status bar (16) + top controls (2 * 16 + 6).
    Console console{
-        {0, 3 * 16, 240, 256}};
-
-    std::unique_ptr<POCSAGLogger> logger{};
-
-    uint32_t target_frequency_ = initial_target_frequency;
-
-    void update_freq(rf::Frequency f);
-
-    void on_packet(const POCSAGPacketMessage* message);
-
-    uint32_t target_frequency() const;
-    void set_target_frequency(const uint32_t new_value);
+        {0, 2 * 16 + 6, screen_width, screen_height - 54}};

    MessageHandlerRegistration message_handler_packet{
        Message::ID::POCSAGPacket,
@@ -126,6 +299,13 @@ class POCSAGAppView : public View {
            const auto message = static_cast<const POCSAGPacketMessage*>(p);
            this->on_packet(message);
        }};
+
+    MessageHandlerRegistration message_handler_stats{
+        Message::ID::POCSAGStats,
+        [this](Message* const p) {
+            const auto stats = static_cast<const POCSAGStatsMessage*>(p);
+            this->on_stats(stats);
+        }};
 };

 } /* namespace ui */
@@ -26,12 +26,16 @@

 #include "ui_fileman.hpp"
 #include "io_file.hpp"
-#include "cpld_update.hpp"
+#include "io_convert.hpp"
+
 #include "baseband_api.hpp"
+#include "metadata_file.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "utility.hpp"

 using namespace portapack;
+namespace fs = std::filesystem;

 namespace ui {

@@ -39,51 +43,42 @@ void ReplayAppView::set_ready() {
    ready_signal = true;
 }

-void ReplayAppView::on_file_changed(std::filesystem::path new_file_path) {
-    File data_file, info_file;
-    char file_data[257];
+void ReplayAppView::on_file_changed(const fs::path& new_file_path) {
+    file_path = fs::path(u"/") + new_file_path;
+    File::Size file_size{};

-    // Get file size
-    auto data_open_error = data_file.open("/" + new_file_path.string());
-    if (data_open_error.is_valid()) {
-        file_error();
-        return;
-    }
-
-    file_path = new_file_path;
-
-    // Get original record frequency if available
-    std::filesystem::path info_file_path = file_path;
-    info_file_path.replace_extension(u".TXT");
-
-    sample_rate = 500000;
-
-    auto info_open_error = info_file.open("/" + info_file_path.string());
-    if (!info_open_error.is_valid()) {
-        memset(file_data, 0, 257);
-        auto read_size = info_file.read(file_data, 256);
-        if (!read_size.is_error()) {
-            auto pos1 = strstr(file_data, "center_frequency=");
-            if (pos1) {
-                pos1 += 17;
-                field_frequency.set_value(strtoll(pos1, nullptr, 10));
-            }
-
-            auto pos2 = strstr(file_data, "sample_rate=");
-            if (pos2) {
-                pos2 += 12;
-                sample_rate = strtoll(pos2, nullptr, 10);
-            }
+    {  // Get the size of the data file.
+        File data_file;
+        auto error = data_file.open(file_path);
+        if (error) {
+            file_error();
+            return;
        }
+
+        file_size = data_file.size();
    }

+    // Get original record frequency if available.
+    auto metadata_path = get_metadata_path(file_path);
+    auto metadata = read_metadata_file(metadata_path);
+
+    if (metadata) {
+        field_frequency.set_value(metadata->center_frequency);
+        sample_rate = metadata->sample_rate;
+    } else {
+        // TODO: This is interesting because it implies that the
+        // The capture will just be replayed at the freq set on the
+        // FrequencyField. Is that an intentional behavior?
+        sample_rate = 500000;
+    }
+
+    // UI Fixup.
    text_sample_rate.set(unit_auto_scale(sample_rate, 3, 0) + "Hz");
-
-    auto file_size = data_file.size();
-    auto duration = (file_size * 1000) / (2 * 2 * sample_rate);
-
    progressbar.set_max(file_size);
-    text_filename.set(file_path.filename().string().substr(0, 12));
+    text_filename.set(truncate(file_path.filename().string(), 12));
+
+    uint8_t sample_size = capture_file_sample_size(current()->path);
+    auto duration = ms_duration(file_size, sample_rate, sample_size);
    text_duration.set(to_string_time_ms(duration));

    button_play.focus();
@@ -118,7 +113,7 @@ void ReplayAppView::start() {

    std::unique_ptr<stream::Reader> reader;

-    auto p = std::make_unique<FileReader>();
+    auto p = std::make_unique<FileConvertReader>();
    auto open_error = p->open(file_path);
    if (open_error.is_valid()) {
        file_error();
@@ -129,7 +124,7 @@ void ReplayAppView::start() {

    if (reader) {
        button_play.set_bitmap(&bitmap_stop);
-        baseband::set_sample_rate(sample_rate * 8);
+        baseband::set_sample_rate(sample_rate, OversampleRate::x8);

        replay_thread = std::make_unique<ReplayThread>(
            std::move(reader),
@@ -141,7 +136,7 @@ void ReplayAppView::start() {
            });
    }

-    transmitter_model.set_sampling_rate(sample_rate * 8);
+    transmitter_model.set_sampling_rate(sample_rate * toUType(OversampleRate::x8));
    transmitter_model.set_baseband_bandwidth(baseband_bandwidth);
    transmitter_model.enable();

@@ -188,35 +183,19 @@ ReplayAppView::ReplayAppView(
        &text_duration,
        &progressbar,
        &field_frequency,
-        &tx_view,  // now it handles previous rfgain , rfamp.
+        &tx_view,  // now it handles previous rfgain, rfamp.
        &check_loop,
        &button_play,
        &waterfall,
    });

-    field_frequency.set_value(target_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
-    field_frequency.on_change = [this](rf::Frequency f) {
-        this->on_target_frequency_changed(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(this->target_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->on_target_frequency_changed(f);
-            this->field_frequency.set_value(f);
-        };
-    };
-
-    field_frequency.set_step(5000);
-
    button_play.on_select = [this](ImageButton&) {
        this->toggle();
    };

    button_open.on_select = [this, &nav](Button&) {
-        auto open_view = nav.push<FileLoadView>(".C16");
-        open_view->on_changed = [this](std::filesystem::path new_file_path) {
+        auto open_view = nav.push<FileLoadView>(".C*");
+        open_view->on_changed = [this](fs::path new_file_path) {
            on_file_changed(new_file_path);
        };
    };
@@ -224,12 +203,7 @@ ReplayAppView::ReplayAppView(

 ReplayAppView::~ReplayAppView() {
    transmitter_model.disable();
-
-    display.fill_rectangle({0, 0, 240, 320}, Color::black());  // Solving sometimes visible bottom waterfall artifacts, clearing all LCD  pixels.
-    chThdSleepMilliseconds(40);                                // (that happened sometimes if we interrupt the waterfall play at the beggining of the play  around 25% and exit )
-    hackrf::cpld::load_sram_no_verify();                       // to leave all  RX reception ok, without "ghost interference signal problem" at the exit .
-
-    baseband::shutdown();  // better this function at the end, after load_sram(). If not , sometimes produced hang up (now not , it is ok).
+    baseband::shutdown();
 }

 void ReplayAppView::on_hide() {
@@ -247,17 +221,4 @@ void ReplayAppView::set_parent_rect(const Rect new_parent_rect) {
    waterfall.set_parent_rect(waterfall_rect);
 }

-void ReplayAppView::on_target_frequency_changed(rf::Frequency f) {
-    set_target_frequency(f);
-}
-
-void ReplayAppView::set_target_frequency(const rf::Frequency new_value) {
-    persistent_memory::set_tuned_frequency(new_value);
-    ;
-}
-
-rf::Frequency ReplayAppView::target_frequency() const {
-    return persistent_memory::tuned_frequency();
-}
-
 } /* namespace ui */
@@ -23,18 +23,18 @@
 #ifndef __REPLAY_APP_HPP__
 #define __REPLAY_APP_HPP__

-#define SHORT_UI true
-#define NORMAL_UI false
-
+#include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "replay_thread.hpp"
 #include "ui_spectrum.hpp"
+#include "ui_transmitter.hpp"

 #include <string>
 #include <memory>
-#include "ui_transmitter.hpp"

 namespace ui {

@@ -51,6 +51,9 @@ class ReplayAppView : public View {

   private:
    NavigationView& nav_;
+    TxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "tx_replay", app_settings::Mode::TX};

    static constexpr ui::Dim header_height = 3 * 16;

@@ -61,13 +64,9 @@ class ReplayAppView : public View {
    const size_t read_size{16384};
    const size_t buffer_count{3};

-    void on_file_changed(std::filesystem::path new_file_path);
-    void on_target_frequency_changed(rf::Frequency f);
+    void on_file_changed(const std::filesystem::path& new_file_path);
    void on_tx_progress(const uint32_t progress);

-    void set_target_frequency(const rf::Frequency new_value);
-    rf::Frequency target_frequency() const;
-
    void toggle();
    void start();
    void stop(const bool do_loop);
@@ -97,15 +96,13 @@ class ReplayAppView : public View {
    ProgressBar progressbar{
        {18 * 8, 1 * 16, 12 * 8, 16}};

-    FrequencyField field_frequency{
+    TxFrequencyField field_frequency{
        {0 * 8, 2 * 16},
-    };
+        nav_};

    TransmitterView2 tx_view{
-        // new handling of NumberField field_rfgain, NumberField field_rfamp
-        74, 1 * 8, SHORT_UI  // x(columns), y (line) position. (Uused in Repay / GPS Simul / Playlist App)
-                             //		10*8, 2*8, NORMAL_UI				// x(columns), y (line) position. (Used in Mic App)
-    };
+        {11 * 8, 2 * 16},
+        /*short_ui*/ true};

    Checkbox check_loop{
        {21 * 8, 2 * 16},
@@ -118,7 +115,7 @@ class ReplayAppView : public View {
        Color::green(),
        Color::black()};

-    spectrum::WaterfallWidget waterfall{};
+    spectrum::WaterfallView waterfall{};

    MessageHandlerRegistration message_handler_replay_thread_error{
        Message::ID::ReplayThreadDone,
@@ -25,7 +25,7 @@
 #include "soundboard_app.hpp"
 #include "string_format.hpp"
 #include "tonesets.hpp"
-#include "cpld_update.hpp"
+#include "ui_tone_key.hpp"

 using namespace tonekey;
 using namespace portapack;
@@ -106,6 +106,7 @@ void SoundBoardView::start_tx(const uint32_t id) {
            EventDispatcher::send_message(message);
        });

+    // TODO: Delete all this and use tx model.
    baseband::set_audiotx_config(
        1536000 / 20,  // Update vu-meter at 20Hz
        transmitter_model.channel_bandwidth(),
@@ -119,8 +120,6 @@ void SoundBoardView::start_tx(const uint32_t id) {
    );
    baseband::set_sample_rate(sample_rate);

-    transmitter_model.set_sampling_rate(1536000);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    tx_view.set_transmitting(true);
@@ -235,15 +234,6 @@ SoundBoardView::SoundBoardView(
                  &button_next_page,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_soundboard", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    refresh_list();

    button_next_page.on_select = [this](Button&) {
@@ -266,9 +256,9 @@ SoundBoardView::SoundBoardView(
    check_random.set_value(false);

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -283,14 +273,9 @@ SoundBoardView::SoundBoardView(
 }

 SoundBoardView::~SoundBoardView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_soundboard", &app_settings);
-
    stop();
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit.
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 }  // namespace ui
@@ -29,8 +29,8 @@
 #include "baseband_api.hpp"
 #include "lfsr_random.hpp"
 #include "io_wave.hpp"
-#include "tone_key.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"

 namespace ui {

@@ -49,11 +49,15 @@ class SoundBoardView : public View {
    std::string title() const override { return "Soundbrd TX"; };

   private:
-    NavigationView& nav_;
+    TxRadioState radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        1536000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_soundboard", app_settings::Mode::TX};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    NavigationView& nav_;

    enum tx_modes {
        NORMAL = 0,
@@ -32,7 +32,7 @@ class SpectrumAnalysisModel {

 namespace ui {

-class SpectrumAnalysisView : public spectrum::WaterfallWidget {
+class SpectrumAnalysisView : public spectrum::WaterfallView {
   public:
   private:
    SpectrumAnalysisModel model;
@@ -34,9 +34,6 @@ namespace tpms {

 namespace format {

-static bool use_kpa = true;
-static bool use_celsius = true;
-
 std::string type(Reading::Type type) {
    return to_string_dec_uint(toUType(type), 2);
 }
@@ -46,11 +43,11 @@ std::string id(TransponderID id) {
 }

 std::string pressure(Pressure pressure) {
-    return to_string_dec_int(use_kpa ? pressure.kilopascal() : pressure.psi(), 3);
+    return to_string_dec_int(units_psi ? pressure.psi() : pressure.kilopascal(), 3);
 }

 std::string temperature(Temperature temperature) {
-    return to_string_dec_int(use_celsius ? temperature.celsius() : temperature.fahrenheit(), 3);
+    return to_string_dec_int(units_fahr ? temperature.fahrenheit() : temperature.celsius(), 3);
 }

 std::string flags(Flags flags) {
@@ -78,9 +75,9 @@ void TPMSLogger::on_packet(const tpms::Packet& packet, const uint32_t target_fre
    const auto hex_formatted = packet.symbols_formatted();

    // TODO: function doesn't take uint64_t, so when >= 1<<32, weirdness will ensue!
-    const auto tuning_frequency_str = to_string_dec_uint(target_frequency, 10);
+    const auto target_frequency_str = to_string_dec_uint(target_frequency, 10);

-    std::string entry = tuning_frequency_str + " " + tpms::format::signal_type(packet.signal_type()) + " " + hex_formatted.data + "/" + hex_formatted.errors;
+    std::string entry = target_frequency_str + " " + tpms::format::signal_type(packet.signal_type()) + " " + hex_formatted.data + "/" + hex_formatted.errors;
    log_file.write_entry(packet.received_at(), entry);
 }

@@ -157,39 +154,24 @@ TPMSAppView::TPMSAppView(NavigationView&) {
                  &field_vga,
                  &recent_entries_view});

-    // load app settings
-    auto rc = settings.load("rx_tpms", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-        options_band.set_by_value(app_settings.rx_frequency);
-    } else
-        options_band.set_by_value(receiver_model.tuning_frequency());
-
-    receiver_model.set_tuning_frequency(tuning_frequency());
-    receiver_model.set_sampling_rate(sampling_rate);
-    receiver_model.set_baseband_bandwidth(baseband_bandwidth);
    receiver_model.enable();

    options_band.on_change = [this](size_t, OptionsField::value_t v) {
-        this->on_band_changed(v);
+        receiver_model.set_target_frequency(v);
    };
-    options_band.set_by_value(target_frequency());
+    options_band.set_by_value(receiver_model.target_frequency());

    options_pressure.on_change = [this](size_t, int32_t i) {
-        tpms::format::use_kpa = !i;
+        tpms::format::units_psi = (bool)i;
        update_view();
    };
-
-    options_pressure.set_selected_index(0, true);
+    options_pressure.set_selected_index(tpms::format::units_psi, true);

    options_temperature.on_change = [this](size_t, int32_t i) {
-        tpms::format::use_celsius = !i;
+        tpms::format::units_fahr = (bool)i;
        update_view();
    };
-
-    options_temperature.set_selected_index(0, true);
+    options_temperature.set_selected_index(tpms::format::units_fahr, true);

    logger = std::make_unique<TPMSLogger>();
    if (logger) {
@@ -198,10 +180,6 @@ TPMSAppView::TPMSAppView(NavigationView&) {
 }

 TPMSAppView::~TPMSAppView() {
-    // save app settings
-    app_settings.rx_frequency = target_frequency_;
-    settings.save("rx_tpms", &app_settings);
-
    receiver_model.disable();
    baseband::shutdown();
 }
@@ -224,7 +202,7 @@ void TPMSAppView::set_parent_rect(const Rect new_parent_rect) {

 void TPMSAppView::on_packet(const tpms::Packet& packet) {
    if (logger) {
-        logger->on_packet(packet, target_frequency());
+        logger->on_packet(packet, receiver_model.target_frequency());
    }

    const auto reading_opt = packet.reading();
@@ -241,21 +219,4 @@ void TPMSAppView::on_show_list() {
    recent_entries_view.focus();
 }

-void TPMSAppView::on_band_changed(const uint32_t new_band_frequency) {
-    set_target_frequency(new_band_frequency);
-}
-
-void TPMSAppView::set_target_frequency(const uint32_t new_value) {
-    target_frequency_ = new_value;
-    receiver_model.set_tuning_frequency(tuning_frequency());
-}
-
-uint32_t TPMSAppView::target_frequency() const {
-    return target_frequency_;
-}
-
-uint32_t TPMSAppView::tuning_frequency() const {
-    return target_frequency() - (sampling_rate / 4);
-}
-
 } /* namespace ui */
@@ -28,6 +28,7 @@
 #include "ui_rssi.hpp"
 #include "ui_channel.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "event_m0.hpp"

 #include "log_file.hpp"
@@ -36,11 +37,18 @@

 #include "tpms_packet.hpp"

-namespace std {
+namespace tpms {

-constexpr bool operator==(const tpms::TransponderID& lhs, const tpms::TransponderID& rhs) {
-    return (lhs.value() == rhs.value());
-}
+namespace format {
+
+static bool units_psi{false};
+static bool units_fahr{false};
+
+} /* namespace format */
+
+} /* namespace tpms */
+
+namespace std {

 } /* namespace std */

@@ -105,13 +113,18 @@ class TPMSAppView : public View {
    std::string title() const override { return "TPMS RX"; };

   private:
-    static constexpr uint32_t initial_target_frequency = 315000000;
-    static constexpr uint32_t sampling_rate = 2457600;
-    static constexpr uint32_t baseband_bandwidth = 1750000;
+    RxRadioState radio_state_{
+        314950000 /* frequency*/,
+        1750000 /* bandwidth */,
+        2457600 /* sampling rate */};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    app_settings::SettingsManager settings_{
+        "rx_tpms",
+        app_settings::Mode::RX,
+        {
+            {"units_psi"sv, &tpms::format::units_psi},
+            {"units_fahr"sv, &tpms::format::units_fahr},
+        }};

    MessageHandlerRegistration message_handler_packet{
        Message::ID::TPMSPacket,
@@ -133,12 +146,13 @@ class TPMSAppView : public View {
        {21 * 8, 5, 6 * 8, 4},
    };

+    // "315 MHz" TPMS sensors transmit at either 314.9 or 315 MHz but we should pick up either
    OptionsField options_band{
        {0 * 8, 0 * 16},
        3,
        {
-            {"315", 315000000},
-            {"433", 433920000},
+            {"315", 314950000},
+            {"434", 433920000},
        }};

    OptionsField options_pressure{
@@ -149,9 +163,9 @@ class TPMSAppView : public View {

    OptionsField options_temperature{
        {9 * 8, 0 * 16},
-        1,
-        {{"C", 0},
-         {"F", 1}}};
+        2,
+        {{STR_DEGREES_C, 0},
+         {STR_DEGREES_F, 1}}};

    RFAmpField field_rf_amp{
        {13 * 8, 0 * 16}};
@@ -175,18 +189,9 @@ class TPMSAppView : public View {
    }};
    TPMSRecentEntriesView recent_entries_view{columns, recent};

-    uint32_t target_frequency_ = initial_target_frequency;
-
    void on_packet(const tpms::Packet& packet);
    void on_show_list();
    void update_view();
-
-    void on_band_changed(const uint32_t new_band_frequency);
-
-    uint32_t target_frequency() const;
-    void set_target_frequency(const uint32_t new_value);
-
-    uint32_t tuning_frequency() const;
 };

 } /* namespace ui */
@@ -47,7 +47,7 @@ using namespace portapack;
 namespace ui {

 void AboutView::on_show() {
-    transmitter_model.set_tuning_frequency(1337000000);  // TODO: Change
+    transmitter_model.set_target_frequency(1337000000);  // TODO: Change
    transmitter_model.set_baseband_configuration({
        .mode = 0,
        .sampling_rate = 1536000,
@@ -56,7 +56,6 @@ void AboutView::on_show() {
    transmitter_model.set_rf_amp(true);
    transmitter_model.set_lna(40);
    transmitter_model.set_vga(40);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    baseband::set_audiotx_data(32, 50, false, 0);
@@ -8,7 +8,7 @@ AboutView::AboutView(NavigationView& nav) {
        nav.pop();
    };

-    console.writeln("\x1B\x07List of contributors:\x1B\x10");
+    console.writeln(STR_COLOR_LIGHT_GREY "List of contributors:");
    console.writeln("");
 }

@@ -20,7 +20,7 @@ void AboutView::update() {
            case 1:
                // TODO: Generate this automatically from github
                // https://github.com/eried/portapack-mayhem/graphs/contributors?to=2022-01-01&from=2020-04-12&type=c
-                console.writeln("\x1B\x06Mayhem:\x1B\x10");
+                console.writeln(STR_COLOR_DARK_YELLOW "Mayhem:");
                console.writeln("eried,euquiq,gregoryfenton");
                console.writeln("johnelder,jwetzell,nnemanjan00");
                console.writeln("N0vaPixel,klockee,GullCode");
@@ -34,13 +34,16 @@ void AboutView::update() {
                console.writeln("notpike,jLynx,zigad");
                console.writeln("MichalLeonBorsuk,jimilinuxguy");
                console.writeln("kallanreed,bernd-herzog");
+                break;
+            case 2:
                console.writeln("NotherNgineer,zxkmm,u-foka");
+                console.writeln("Netro,HTotoo");
                console.writeln("");
                break;

-            case 2:
+            case 3:
                // https://github.com/eried/portapack-mayhem/graphs/contributors?to=2020-04-12&from=2015-07-31&type=c
-                console.writeln("\x1B\x06Havoc:\x1B\x10");
+                console.writeln(STR_COLOR_DARK_YELLOW "Havoc:");
                console.writeln("furrtek,mrmookie,NotPike");
                console.writeln("mjwaxios,ImDroided,Giorgiofox");
                console.writeln("F4GEV,z4ziggy,xmycroftx");
@@ -51,16 +54,16 @@ void AboutView::update() {
                console.writeln("");
                break;

-            case 3:
+            case 4:
                // https://github.com/eried/portapack-mayhem/graphs/contributors?from=2014-07-05&to=2015-07-31&type=c
-                console.writeln("\x1B\x06PortaPack:\x1B\x10");
+                console.writeln(STR_COLOR_DARK_YELLOW "PortaPack:");
                console.writeln("jboone,argilo");
                console.writeln("");
                break;

-            case 4:
+            case 5:
                // https://github.com/mossmann/hackrf/graphs/contributors
-                console.writeln("\x1B\x06HackRF:\x1B\x10");
+                console.writeln(STR_COLOR_DARK_YELLOW "HackRF:");
                console.writeln("mossmann,dominicgs,bvernoux");
                console.writeln("bgamari,schneider42,miek");
                console.writeln("willcode,hessu,Sec42");
@@ -1,6 +1,7 @@
 /*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -20,46 +21,50 @@
 * Boston, MA 02110-1301, USA.
 */

-#include <strings.h>
+#include <algorithm>

 #include "ui_adsb_rx.hpp"
 #include "ui_alphanum.hpp"

-#include "rtc_time.hpp"
-#include "string_format.hpp"
 #include "baseband_api.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "rtc_time.hpp"
+#include "string_format.hpp"

 using namespace portapack;

 namespace ui {

+static std::string get_map_tag(const AircraftRecentEntry& entry) {
+    return trimr(entry.callsign.empty() ? entry.icao_str : entry.callsign);
+}
+
 template <>
 void RecentEntriesTable<AircraftRecentEntries>::draw(
    const Entry& entry,
    const Rect& target_rect,
    Painter& painter,
    const Style& style) {
-    char aged_color;
    Color target_color;
-    auto entry_age = entry.age;
+    std::string entry_string;

-    // Color decay for flights not being updated anymore
-    if (entry_age < ADSB_CURRENT) {
-        aged_color = 0x10;
-        target_color = Color::green();
-    } else if (entry_age < ADSB_RECENT) {
-        aged_color = 0x07;
-        target_color = Color::light_grey();
-    } else {
-        aged_color = 0x08;
-        target_color = Color::grey();
-    }
+    switch (entry.state) {
+        case ADSBAgeState::Invalid:
+        case ADSBAgeState::Current:
+            entry_string = "";
+            target_color = Color::green();
+            break;
+        case ADSBAgeState::Recent:
+            entry_string = STR_COLOR_LIGHT_GREY;
+            target_color = Color::light_grey();
+            break;
+        default:
+            entry_string = STR_COLOR_DARK_GREY;
+            target_color = Color::grey();
+    };

-    std::string entry_string = "\x1B";
-    entry_string += aged_color;
    entry_string +=
-        (entry.callsign[0] != ' ' ? entry.callsign + " " : entry.icaoStr + "   ") +
+        (entry.callsign.empty() ? entry.icao_str + "   " : entry.callsign + " ") +
        to_string_dec_uint((unsigned int)(entry.pos.altitude / 100), 4) +
        to_string_dec_uint((unsigned int)entry.velo.speed, 4) +
        to_string_dec_uint((unsigned int)(entry.amp >> 9), 4) + " " +
@@ -72,47 +77,59 @@ void RecentEntriesTable<AircraftRecentEntries>::draw(
        entry_string);

    if (entry.pos.valid)
-        painter.draw_bitmap(target_rect.location() + Point(8 * 8, 0), bitmap_target, target_color, style.background);
+        painter.draw_bitmap(target_rect.location() + Point(8 * 8, 0),
+                            bitmap_target, target_color, style.background);
 }

-void ADSBLogger::log_str(std::string& logline) {
-    log_file.write_entry(logline);
+/* ADSBLogger ********************************************/
+
+void ADSBLogger::log(const ADSBLogEntry& log_entry) {
+    std::string log_line;
+    log_line.reserve(100);
+
+    log_line = log_entry.raw_data;
+    log_line += "ICAO:" + log_entry.icao;
+
+    if (!log_entry.callsign.empty())
+        log_line += " " + log_entry.callsign;
+
+    if (log_entry.pos.valid)
+        log_line += " Alt:" + to_string_dec_int(log_entry.pos.altitude) +
+                    " Lat:" + to_string_decimal(log_entry.pos.latitude, 7) +
+                    " Lon:" + to_string_decimal(log_entry.pos.longitude, 7);
+
+    if (log_entry.vel.valid)
+        log_line += " Type:" + to_string_dec_uint(log_entry.vel_type) +
+                    " Hdg:" + to_string_dec_uint(log_entry.vel.heading) +
+                    " Spd: " + to_string_dec_int(log_entry.vel.speed);
+
+    log_file.write_entry(log_line);
 }

-// Aircraft Details
-void ADSBRxAircraftDetailsView::focus() {
-    button_close.focus();
-}
-
-ADSBRxAircraftDetailsView::~ADSBRxAircraftDetailsView() {
-    on_close_();
-}
+/* ADSBRxAircraftDetailsView *****************************/

 ADSBRxAircraftDetailsView::ADSBRxAircraftDetailsView(
    NavigationView& nav,
-    const AircraftRecentEntry& entry,
-    const std::function<void(void)> on_close)
-    : entry_copy(entry),
-      on_close_(on_close) {
-    add_children({&labels,
-                  &text_icao_address,
-                  &text_registration,
-                  &text_manufacturer,
-                  &text_model,
-                  &text_type,
-                  &text_number_of_engines,
-                  &text_engine_type,
-                  &text_owner,
-                  &text_operator,
-                  &button_close});
+    const AircraftRecentEntry& entry) {
+    add_children(
+        {&labels,
+         &text_icao_address,
+         &text_registration,
+         &text_manufacturer,
+         &text_model,
+         &text_type,
+         &text_number_of_engines,
+         &text_engine_type,
+         &text_owner,
+         &text_operator,
+         &button_close});

-    std::unique_ptr<ADSBLogger> logger{};
-
-    icao_code = to_string_hex(entry_copy.ICAO_address, 6);
-    text_icao_address.set(to_string_hex(entry_copy.ICAO_address, 6));
+    text_icao_address.set(entry.icao_str);

    // Try getting the aircraft information from icao24.db
-    return_code = db.retrieve_aircraft_record(&aircraft_record, icao_code);
+    std::database db{};
+    std::database::AircraftDBRecord aircraft_record;
+    auto return_code = db.retrieve_aircraft_record(&aircraft_record, entry.icao_str);
    switch (return_code) {
        case DATABASE_RECORD_FOUND:
            text_registration.set(aircraft_record.aircraft_registration);
@@ -120,6 +137,7 @@ ADSBRxAircraftDetailsView::ADSBRxAircraftDetailsView(
            text_model.set(aircraft_record.aircraft_model);
            text_owner.set(aircraft_record.aircraft_owner);
            text_operator.set(aircraft_record.aircraft_operator);
+
            // Check for ICAO type, e.g. L2J
            if (strlen(aircraft_record.icao_type) == 3) {
                switch (aircraft_record.icao_type[0]) {
@@ -142,7 +160,8 @@ ADSBRxAircraftDetailsView::ADSBRxAircraftDetailsView(
                        text_type.set("Tilt-wing aircraft");
                        break;
                }
-                text_number_of_engines.set(std::string(1, aircraft_record.icao_type[1]));
+
+                text_number_of_engines.set(std::string{1, aircraft_record.icao_type[1]});
                switch (aircraft_record.icao_type[2]) {
                    case 'P':
                        text_engine_type.set("Piston engine");
@@ -157,8 +176,8 @@ ADSBRxAircraftDetailsView::ADSBRxAircraftDetailsView(
                        text_engine_type.set("Electric engine");
                        break;
                }
-
            }
+
            // Check for ICAO type designator
            else if (strlen(aircraft_record.icao_type) == 4) {
                if (strcmp(aircraft_record.icao_type, "SHIP") == 0)
@@ -179,75 +198,49 @@ ADSBRxAircraftDetailsView::ADSBRxAircraftDetailsView(
                    text_type.set("Powered parachute/paraplane");
            }
            break;
+
        case DATABASE_NOT_FOUND:
            text_manufacturer.set("No icao24.db file");
            break;
    }
+
    button_close.on_select = [&nav](Button&) {
        nav.pop();
    };
-};
-
-// End of Aicraft details
-
-void ADSBRxDetailsView::focus() {
-    button_see_map.focus();
 }

-void ADSBRxDetailsView::update(const AircraftRecentEntry& entry) {
-    entry_copy = entry;
-    uint32_t age = entry_copy.age;
-
-    if (age < 60)
-        text_last_seen.set(to_string_dec_uint(age) + " seconds ago");
-    else
-        text_last_seen.set(to_string_dec_uint(age / 60) + " minutes ago");
-
-    text_infos.set(entry_copy.info_string);
-    if (entry_copy.velo.heading < 360 && entry_copy.velo.speed >= 0) {  // I don't like this but...
-        text_info2.set("Hdg:" + to_string_dec_uint(entry_copy.velo.heading) + " Spd:" + to_string_dec_int(entry_copy.velo.speed));
-    } else {
-        text_info2.set("");
-    }
-    text_frame_pos_even.set(to_string_hex_array(entry_copy.frame_pos_even.get_raw_data(), 14));
-    text_frame_pos_odd.set(to_string_hex_array(entry_copy.frame_pos_odd.get_raw_data(), 14));
-
-    if (send_updates) {
-        geomap_view->update_tag(trimr(entry.callsign[0] != ' ' ? entry.callsign : to_string_hex(entry.ICAO_address, 6)));
-        geomap_view->update_position(entry_copy.pos.latitude, entry_copy.pos.longitude, entry_copy.velo.heading, entry_copy.pos.altitude);
-    }
+void ADSBRxAircraftDetailsView::focus() {
+    button_close.focus();
 }

-ADSBRxDetailsView::~ADSBRxDetailsView() {
-    on_close_();
-}
+/* ADSBRxDetailsView *************************************/

 ADSBRxDetailsView::ADSBRxDetailsView(
    NavigationView& nav,
-    const AircraftRecentEntry& entry,
-    const std::function<void(void)> on_close)
-    : entry_copy(entry),
-      on_close_(on_close) {
-    add_children({&labels,
-                  &text_icao_address,
-                  &text_callsign,
-                  &text_last_seen,
-                  &text_airline,
-                  &text_country,
-                  &text_infos,
-                  &text_info2,
-                  &text_frame_pos_even,
-                  &text_frame_pos_odd,
-                  &button_aircraft_details,
-                  &button_see_map});
+    const AircraftRecentEntry& entry)
+    : entry_(entry) {
+    add_children(
+        {&labels,
+         &text_icao_address,
+         &text_callsign,
+         &text_last_seen,
+         &text_airline,
+         &text_country,
+         &text_infos,
+         &text_info2,
+         &text_frame_pos_even,
+         &text_frame_pos_odd,
+         &button_aircraft_details,
+         &button_see_map});

-    std::unique_ptr<ADSBLogger> logger{};
-    update(entry_copy);
+    // The following won't change for a given airborne aircraft.
+    // Try getting the airline's name from airlines.db.
+    // NB: Only works once callsign has been read and won't be updated.
+    std::database db;
+    std::database::AirlinesDBRecord airline_record;
+    std::string airline_code = entry_.callsign.substr(0, 3);
+    auto return_code = db.retrieve_airline_record(&airline_record, airline_code);

-    // The following won't (shouldn't !) change for a given airborne aircraft
-    // Try getting the airline's name from airlines.db
-    airline_code = entry_copy.callsign.substr(0, 3);
-    return_code = db.retrieve_airline_record(&airline_record, airline_code);
    switch (return_code) {
        case DATABASE_RECORD_FOUND:
            text_airline.set(airline_record.airline);
@@ -258,285 +251,312 @@ ADSBRxDetailsView::ADSBRxDetailsView(
            break;
    }

-    text_callsign.set(entry_copy.callsign);
-    text_icao_address.set(to_string_hex(entry_copy.ICAO_address, 6));
+    text_icao_address.set(entry_.icao_str);

    button_aircraft_details.on_select = [this, &nav](Button&) {
-        aircraft_details_view = nav.push<ADSBRxAircraftDetailsView>(entry_copy, [this]() { send_updates = false; });
-        send_updates = false;
+        aircraft_details_view_ = nav.push<ADSBRxAircraftDetailsView>(entry_);
+        nav.set_on_pop([this]() {
+            aircraft_details_view_ = nullptr;
+            refresh_ui();
+        });
    };

    button_see_map.on_select = [this, &nav](Button&) {
-        if (!send_updates) {  // Prevent recursively launching the map
-            geomap_view = nav.push<GeoMapView>(
-                trimr(entry_copy.callsign[0] != ' ' ? entry_copy.callsign : entry_copy.icaoStr),
-                entry_copy.pos.altitude,
-                GeoPos::alt_unit::FEET,
-                entry_copy.pos.latitude,
-                entry_copy.pos.longitude,
-                entry_copy.velo.heading,
-                [this]() {
-                    send_updates = false;
-                });
-            send_updates = true;
-        }
+        geomap_view_ = nav.push<GeoMapView>(
+            get_map_tag(entry_),
+            entry_.pos.altitude,
+            GeoPos::alt_unit::FEET,
+            entry_.pos.latitude,
+            entry_.pos.longitude,
+            entry_.velo.heading);
+        nav.set_on_pop([this]() {
+            geomap_view_ = nullptr;
+            refresh_ui();
+        });
    };
+
+    refresh_ui();
 };

-void ADSBRxView::focus() {
-    field_vga.focus();
+void ADSBRxDetailsView::focus() {
+    button_see_map.focus();
 }

-ADSBRxView::~ADSBRxView() {
-    receiver_model.set_tuning_frequency(prevFreq);  // Restore previous frequency on exit
+void ADSBRxDetailsView::update(const AircraftRecentEntry& entry) {
+    entry_ = entry;

-    // save app settings
-    settings.save("rx_adsb", &app_settings);
-
-    // TODO: once all apps keep there own settin previous frequency logic can be removed
-    receiver_model.set_tuning_frequency(prevFreq);
-    rtc_time::signal_tick_second -= signal_token_tick_second;
-    receiver_model.disable();
-    baseband::shutdown();
-}
-
-AircraftRecentEntry ADSBRxView::find_or_create_entry(uint32_t ICAO_address) {
-    auto it = find(recent, ICAO_address);
-
-    // If not found
-    if (it == std::end(recent)) {
-        recent.emplace_front(ICAO_address);  // Add it
-        it = find(recent, ICAO_address);     // Find it again
-    }
-    return *it;
-}
-
-void ADSBRxView::replace_entry(AircraftRecentEntry& entry) {
-    uint32_t ICAO_address = entry.ICAO_address;
-
-    std::replace_if(
-        recent.begin(), recent.end(),
-        [ICAO_address](const AircraftRecentEntry& compEntry) { return ICAO_address == compEntry.ICAO_address; },
-        entry);
-}
-
-void ADSBRxView::remove_old_entries() {
-    auto it = recent.rbegin();
-    auto end = recent.rend();
-    while (it != end) {
-        if (it->age_state >= 4) {
-            std::advance(it, 1);
-            recent.erase(it.base());
-        } else {
-            break;  // stop looking because the list is sorted
-        }
-    }
-}
-
-void ADSBRxView::sort_entries_by_state() {
-    // Sorting List pn age_state using lambda function as comparator
-    recent.sort([](const AircraftRecentEntry& left, const AircraftRecentEntry& right) { return (left.age_state < right.age_state); });
-}
-
-void ADSBRxView::on_frame(const ADSBFrameMessage* message) {
-    logger = std::make_unique<ADSBLogger>();
-    rtc::RTC datetime;
-    std::string callsign;
-    std::string str_info;
-    std::string logentry;
-
-    auto frame = message->frame;
-    uint32_t ICAO_address = frame.get_ICAO_address();
-
-    if (frame.check_CRC() && ICAO_address) {
-        rtcGetTime(&RTCD1, &datetime);
-        auto entry = find_or_create_entry(ICAO_address);
-        frame.set_rx_timestamp(datetime.minute() * 60 + datetime.second());
-        entry.reset_age();
-        if (entry.hits == 0) {
-            entry.amp = message->amp;  // Store amplitude on first hit
-        } else {
-            entry.amp = ((entry.amp * 15) + message->amp) >> 4;  // Update smoothed amplitude on updates
-        }
-
-        entry.inc_hit();
-        if (logger) {
-            logentry += to_string_hex_array(frame.get_raw_data(), 14) + " ";
-            logentry += "ICAO:" + entry.icaoStr + " ";
-        }
-
-        if (frame.get_DF() == DF_ADSB) {
-            uint8_t msg_type = frame.get_msg_type();
-            uint8_t msg_sub = frame.get_msg_sub();
-            uint8_t* raw_data = frame.get_raw_data();
-
-            // 4: // surveillance, altitude reply
-            if ((msg_type >= AIRCRAFT_ID_L) && (msg_type <= AIRCRAFT_ID_H)) {
-                callsign = decode_frame_id(frame);
-                entry.set_callsign(callsign);
-                if (logger) {
-                    logentry += callsign + " ";
-                }
-            }
-            // 9:
-            // 18: { // Extended squitter/non-transponder
-            // 21: // Comm-B, identity reply
-            // 20: // Comm-B, altitude reply
-            else if (((msg_type >= AIRBORNE_POS_BARO_L) && (msg_type <= AIRBORNE_POS_BARO_H)) ||
-                     ((msg_type >= AIRBORNE_POS_GPS_L) && (msg_type <= AIRBORNE_POS_GPS_H))) {
-                entry.set_frame_pos(frame, raw_data[6] & 4);
-
-                if (entry.pos.valid) {
-                    str_info = "Alt:" + to_string_dec_int(entry.pos.altitude) +
-                               " Lat:" + to_string_decimal(entry.pos.latitude, 2) +
-                               " Lon:" + to_string_decimal(entry.pos.longitude, 2);
-
-                    entry.set_info_string(str_info);
-
-                    if (logger) {
-                        // printing the coordinates in the log file with more
-                        // resolution, as we are not constrained by screen
-                        // real estate there:
-
-                        std::string log_info = "Alt:" + to_string_dec_int(entry.pos.altitude) +
-                                               " Lat:" + to_string_decimal(entry.pos.latitude, 7) +
-                                               " Lon:" + to_string_decimal(entry.pos.longitude, 7);
-                        logentry += log_info + " ";
-                    }
-                }
-            } else if (msg_type == AIRBORNE_VEL && msg_sub >= VEL_GND_SUBSONIC && msg_sub <= VEL_AIR_SUPERSONIC) {
-                entry.set_frame_velo(frame);
-                if (logger) {
-                    logger->append(LOG_ROOT_DIR "/ADSB.TXT");
-                    logentry += "Type:" + to_string_dec_uint(msg_sub) +
-                                " Hdg:" + to_string_dec_uint(entry.velo.heading) +
-                                " Spd: " + to_string_dec_int(entry.velo.speed);
-                }
-            }
-            replace_entry(entry);
-        }  // frame.get_DF() == DF_ADSB
-
-        if (logger) {
-            logger->append(LOG_ROOT_DIR "/ADSB.TXT");
-            // will log each frame in format:
-            // 20171103100227 8DADBEEFDEADBEEFDEADBEEFDEADBEEF ICAO:nnnnnn callsign Alt:nnnnnn Latnnn.nn Lonnnn.nn
-            logger->log_str(logentry);
-        }
-    }
-}
-
-void ADSBRxView::on_tick_second() {
-    if (recent.size() <= 16) {  // Not many entries update everything (16 is one screen full)
-        updateDetailsAndMap(1);
-        updateRecentEntries();
-    } else if (updateState == 0) {  // Even second
-        updateState = 1;
-        updateDetailsAndMap(2);
-    } else {  // Odd second only performed when there are many entries
-        updateState = 0;
-        updateRecentEntries();
-    }
-}
-
-void ADSBRxView::updateDetailsAndMap(int ageStep) {
-    ui::GeoMarker marker;
-    bool storeNewMarkers = false;
-
-    // Sort and truncate the entries, grouped, newest group first
-    sort_entries_by_state();
-    truncate_entries(recent);
-    remove_old_entries();
-
-    // Calculate if it is time to update markers
-    if (send_updates && details_view && details_view->geomap_view) {
-        ticksSinceMarkerRefresh += ageStep;
-        if (ticksSinceMarkerRefresh >= MARKER_UPDATE_SECONDS) {  // Update other aircraft every few seconds
-            storeNewMarkers = true;
-            ticksSinceMarkerRefresh = 0;
-        }
+    if (aircraft_details_view_) {
+        // AC Details view is showing, nothing to update.
+    } else if (geomap_view_) {
+        // Map is showing, update the current item.
+        geomap_view_->update_tag(get_map_tag(entry_));
+        geomap_view_->update_position(entry.pos.latitude, entry.pos.longitude, entry.velo.heading, entry.pos.altitude);
    } else {
-        ticksSinceMarkerRefresh = MARKER_UPDATE_SECONDS;  // Send the markers as soon as the geoview exists
-    }
-
-    // Increment age, and pass updates to the details and map
-    const bool otherMarkersCanBeSent = send_updates && storeNewMarkers && details_view && details_view->geomap_view;  // Save retesting all of this
-    MapMarkerStored markerStored = MARKER_NOT_STORED;
-    if (otherMarkersCanBeSent) {
-        details_view->geomap_view->clear_markers();
-    }
-    // Loop through all entries
-    for (auto& entry : recent) {
-        entry.inc_age(ageStep);
-
-        // Only if there is a details view
-        if (send_updates && details_view) {
-            if (entry.key() == detailed_entry_key)  // Check if the ICAO address match
-            {
-                details_view->update(entry);
-            }
-            // Store if the view is present and the list isn't full
-            else if (otherMarkersCanBeSent && (markerStored != MARKER_LIST_FULL) && entry.pos.valid && (entry.age_state <= 2)) {
-                marker.lon = entry.pos.longitude;
-                marker.lat = entry.pos.latitude;
-                marker.angle = entry.velo.heading;
-                marker.tag = trimr(entry.callsign[0] != ' ' ? entry.callsign : entry.icaoStr);
-                markerStored = details_view->geomap_view->store_marker(marker);
-            }
-        }
-    }  // Loop through all entries, if only to update the age
-}
-
-void ADSBRxView::updateRecentEntries() {
-    // Redraw the list of aircraft
-    if (!send_updates) {
-        recent_entries_view.set_dirty();
+        // Details is showing, update details.
+        refresh_ui();
    }
 }

+void ADSBRxDetailsView::clear_map_markers() {
+    if (geomap_view_)
+        geomap_view_->clear_markers();
+}
+
+bool ADSBRxDetailsView::add_map_marker(const AircraftRecentEntry& entry) {
+    // Map not shown, can't add markers.
+    if (!geomap_view_)
+        return false;
+
+    GeoMarker marker{};
+    marker.lon = entry.pos.longitude;
+    marker.lat = entry.pos.latitude;
+    marker.angle = entry.velo.heading;
+    marker.tag = get_map_tag(entry);
+
+    auto markerStored = geomap_view_->store_marker(marker);
+    return markerStored == MARKER_STORED;
+}
+
+void ADSBRxDetailsView::refresh_ui() {
+    auto age = entry_.age;
+    if (age < 60)
+        text_last_seen.set(to_string_dec_uint(age) + " seconds ago");
+    else
+        text_last_seen.set(to_string_dec_uint(age / 60) + " minutes ago");
+
+    text_callsign.set(entry_.callsign);
+    text_infos.set(entry_.info_string);
+    if (entry_.velo.heading < 360 && entry_.velo.speed >= 0)
+        text_info2.set("Hdg:" + to_string_dec_uint(entry_.velo.heading) +
+                       " Spd:" + to_string_dec_int(entry_.velo.speed));
+    else
+        text_info2.set("");
+
+    text_frame_pos_even.set(to_string_hex_array(entry_.frame_pos_even.get_raw_data(), 14));
+    text_frame_pos_odd.set(to_string_hex_array(entry_.frame_pos_odd.get_raw_data(), 14));
+}
+
+/* ADSBRxView ********************************************/
+
 ADSBRxView::ADSBRxView(NavigationView& nav) {
    baseband::run_image(portapack::spi_flash::image_tag_adsb_rx);
-    add_children({&labels,
-                  &field_lna,
-                  &field_vga,
-                  &field_rf_amp,
-                  &rssi,
-                  &recent_entries_view});
-
-    // load app settings
-    auto rc = settings.load("rx_adsb", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-    } else {
-        field_lna.set_value(40);
-        field_vga.set_value(40);
-    }
+    add_children(
+        {&labels,
+         &field_lna,
+         &field_vga,
+         &field_rf_amp,
+         &rssi,
+         &recent_entries_view,
+         &status_frame,
+         &status_good_frame});

    recent_entries_view.set_parent_rect({0, 16, 240, 272});
    recent_entries_view.on_select = [this, &nav](const AircraftRecentEntry& entry) {
-        detailed_entry_key = entry.key();
-        details_view = nav.push<ADSBRxDetailsView>(
-            entry,
-            [this]() {
-                send_updates = false;
-            });
-        send_updates = true;
+        detail_key = entry.key();
+        details_view = nav.push<ADSBRxDetailsView>(entry);
+
+        nav.set_on_pop([this]() {
+            detail_key = AircraftRecentEntry::invalid_key;
+            details_view = nullptr;
+        });
    };

    signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
        on_tick_second();
    };

-    prevFreq = receiver_model.tuning_frequency();  // Store previous frequency on creation
+    logger = std::make_unique<ADSBLogger>();
+    logger->append(LOG_ROOT_DIR "/ADSB.TXT");

-    baseband::set_adsb();
-
-    receiver_model.set_tuning_frequency(1090000000);
-    receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis);
-    receiver_model.set_sampling_rate(2000000);
-    receiver_model.set_baseband_bandwidth(2500000);
    receiver_model.enable();
+    baseband::set_adsb();
+}
+
+ADSBRxView::~ADSBRxView() {
+    rtc_time::signal_tick_second -= signal_token_tick_second;
+    receiver_model.disable();
+    baseband::shutdown();
+}
+
+void ADSBRxView::focus() {
+    field_vga.focus();
+}
+
+void ADSBRxView::on_frame(const ADSBFrameMessage* message) {
+    auto frame = message->frame;
+    uint32_t ICAO_address = frame.get_ICAO_address();
+    status_frame.toggle();
+
+    // Bad frame, skip it.
+    if (!frame.check_CRC() || ICAO_address == 0)
+        return;
+
+    ADSBLogEntry log_entry;
+    status_good_frame.toggle();
+
+    rtc::RTC datetime;
+    rtcGetTime(&RTCD1, &datetime);
+    frame.set_rx_timestamp(datetime.minute() * 60 + datetime.second());
+
+    // NB: Reference to update entry in-place.
+    auto& entry = find_or_create_entry(ICAO_address);
+    entry.inc_hit();
+    entry.reset_age();
+
+    // Store smoothed amplitude on updates.
+    entry.amp = entry.hits == 0
+                    ? message->amp
+                    : ((entry.amp * 15) + message->amp) >> 4;
+
+    log_entry.raw_data = to_string_hex_array(frame.get_raw_data(), 14);
+    log_entry.icao = entry.icao_str;
+
+    if (frame.get_DF() == DF_ADSB) {
+        uint8_t msg_type = frame.get_msg_type();
+        uint8_t msg_sub = frame.get_msg_sub();
+        uint8_t* raw_data = frame.get_raw_data();
+
+        // 4: // surveillance, altitude reply
+        if ((msg_type >= AIRCRAFT_ID_L) && (msg_type <= AIRCRAFT_ID_H)) {
+            entry.set_callsign(decode_frame_id(frame));
+            log_entry.callsign = entry.callsign;
+        }
+
+        // 9:
+        // 18: // Extended squitter/non-transponder
+        // 21: // Comm-B, identity reply
+        // 20: // Comm-B, altitude reply
+        else if (((msg_type >= AIRBORNE_POS_BARO_L) && (msg_type <= AIRBORNE_POS_BARO_H)) ||
+                 ((msg_type >= AIRBORNE_POS_GPS_L) && (msg_type <= AIRBORNE_POS_GPS_H))) {
+            entry.set_frame_pos(frame, raw_data[6] & 4);
+            log_entry.pos = entry.pos;
+
+            if (entry.pos.valid) {
+                std::string str_info =
+                    "Alt:" + to_string_dec_int(entry.pos.altitude) +
+                    " Lat:" + to_string_decimal(entry.pos.latitude, 2) +
+                    " Lon:" + to_string_decimal(entry.pos.longitude, 2);
+
+                entry.set_info_string(std::move(str_info));
+            }
+
+        } else if (msg_type == AIRBORNE_VEL && msg_sub >= VEL_GND_SUBSONIC && msg_sub <= VEL_AIR_SUPERSONIC) {
+            entry.set_frame_velo(frame);
+            log_entry.vel = entry.velo;
+            log_entry.vel_type = msg_sub;
+        }
+    }
+
+    logger->log(log_entry);
+}
+
+void ADSBRxView::on_tick_second() {
+    status_frame.reset();
+    status_good_frame.reset();
+
+    ++tick_count;
+    ++ticks_since_marker_refresh;
+
+    // Small list, update all at once.
+    if (recent.size() <= max_update_entries) {
+        update_recent_entries(/*age_delta*/ 1);
+        refresh_ui();
+        return;
+    }
+
+    // Too many items, split update work into two phases:
+    // Entry maintenance and UI update.
+    if ((tick_count & 1) == 0)
+        update_recent_entries(/*age_delta*/ 2);
+    else
+        refresh_ui();
+}
+
+void ADSBRxView::refresh_ui() {
+    // There's only one ticks handler, but 3 UIs that need to be updated.
+    // This code will dispatch updates to the currently active view.
+
+    if (details_view) {
+        // The details view is showing, forward updates to that UI.
+        bool current_updated = false;
+        bool map_needs_update = false;
+
+        if (details_view->map_active()) {
+            // Is it time to clear and refresh the map's markers?
+            if (ticks_since_marker_refresh >= MARKER_UPDATE_SECONDS) {
+                map_needs_update = true;
+                ticks_since_marker_refresh = 0;
+                details_view->clear_map_markers();
+            }
+        } else {
+            // Refresh map immediately once active.
+            ticks_since_marker_refresh = MARKER_UPDATE_SECONDS;
+        }
+
+        // Process the entries list.
+        for (const auto& entry : recent) {
+            // Found the entry being shown in details view. Update it.
+            if (entry.key() == detail_key) {
+                details_view->update(entry);
+                current_updated = true;
+            }
+
+            // NB: current entry also gets a marker so it shows up if map is panned.
+            if (map_needs_update && entry.pos.valid && entry.state <= ADSBAgeState::Recent) {
+                map_needs_update = details_view->add_map_marker(entry);
+            }
+
+            // Any work left to do?
+            if (current_updated && !map_needs_update)
+                break;
+        }
+    } else {
+        // Main page is the top view. Redraw the entries view.
+        recent_entries_view.set_dirty();
+    }
+}
+
+void ADSBRxView::update_recent_entries(int age_delta) {
+    for (auto& entry : recent)
+        entry.inc_age(age_delta);
+
+    // Sort and truncate the entries, grouped by state, newest first.
+    sort_entries_by_state();
+    truncate_entries(recent);
+    remove_expired_entries();
+}
+
+AircraftRecentEntry& ADSBRxView::find_or_create_entry(uint32_t ICAO_address) {
+    // Find ...
+    auto it = find(recent, ICAO_address);
+    if (it != recent.end())
+        return *it;
+
+    // ... or Create.
+    return recent.emplace_front(ICAO_address);
+}
+
+void ADSBRxView::sort_entries_by_state() {
+    recent.sort([](const auto& left, const auto& right) {
+        return (left.state < right.state);
+    });
+}
+
+void ADSBRxView::remove_expired_entries() {
+    // NB: Assumes entried are sorted with oldest last.
+    auto it = recent.rbegin();
+    auto end = recent.rend();
+
+    // Find the first !expired entry from the back.
+    while (it != end) {
+        if (it->state != ADSBAgeState::Expired)
+            break;
+
+        std::advance(it, 1);
+    }
+
+    // Remove the range of expired items.
+    recent.erase(it.base(), recent.end());
 }

 } /* namespace ui */
@@ -1,6 +1,7 @@
 /*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2017 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -21,28 +22,23 @@
 */

 #include "ui.hpp"
-
 #include "ui_receiver.hpp"
 #include "ui_geomap.hpp"
-#include "string_format.hpp"

-#include "file.hpp"
-#include "database.hpp"
-#include "recent_entries.hpp"
-#include "log_file.hpp"
 #include "adsb.hpp"
-#include "message.hpp"
 #include "app_settings.hpp"
 #include "crc.hpp"
+#include "database.hpp"
+#include "file.hpp"
+#include "log_file.hpp"
+#include "message.hpp"
+#include "radio_state.hpp"
+#include "recent_entries.hpp"
+#include "string_format.hpp"

 using namespace adsb;

 namespace ui {
-
-#define ADSB_CURRENT 10  // Seconds
-#define ADSB_RECENT 30   // Seconds
-#define ADSB_REMOVE 300  // Used for removing old entries
-
 #define AIRCRAFT_ID_L 1  // aircraft ID message type (lowest type id)
 #define AIRCRAFT_ID_H 4  // aircraft ID message type (highest type id)

@@ -65,8 +61,26 @@ namespace ui {
 #define VEL_AIR_SUBSONIC 3
 #define VEL_AIR_SUPERSONIC 4

-#define O_E_FRAME_TIMEOUT 20  // timeout between odd and even frames
+#define O_E_FRAME_TIMEOUT 20     // timeout between odd and even frames
+#define MARKER_UPDATE_SECONDS 5  // "other" map marker redraw interval

+/* Thresholds (in seconds) that define the transition between ages. */
+struct ADSBAgeLimit {
+    static constexpr int Current = 10;
+    static constexpr int Recent = 30;
+    static constexpr int Expired = 300;
+};
+
+/* Age states used for sorting and drawing recent entries. */
+enum class ADSBAgeState : uint8_t {
+    Invalid,
+    Current,
+    Recent,
+    Old,
+    Expired,
+};
+
+/* Data extracted from ADSB frames. */
 struct AircraftRecentEntry {
    using Key = uint32_t;

@@ -75,30 +89,30 @@ struct AircraftRecentEntry {
    uint32_t ICAO_address{};
    uint16_t hits{0};

-    uint16_t age_state{1};
-    uint32_t age{0};
+    ADSBAgeState state{ADSBAgeState::Invalid};
+    uint32_t age{0};  // In seconds
    uint32_t amp{0};
    adsb_pos pos{false, 0, 0, 0};
    adsb_vel velo{false, 0, 999, 0};
    ADSBFrame frame_pos_even{};
    ADSBFrame frame_pos_odd{};

-    std::string icaoStr{"      "};
-    std::string callsign{"        "};
-    std::string info_string{""};
+    std::string icao_str{};
+    std::string callsign{};
+    std::string info_string{};

-    AircraftRecentEntry(
-        const uint32_t ICAO_address)
+    AircraftRecentEntry(const uint32_t ICAO_address)
        : ICAO_address{ICAO_address} {
-        this->icaoStr = to_string_hex(ICAO_address, 6);
+        this->icao_str = to_string_hex(ICAO_address, 6);
    }

+    /* RecentEntries helpers expect a "key" on every item. */
    Key key() const {
        return ICAO_address;
    }

-    void set_callsign(std::string& new_callsign) {
-        callsign = new_callsign;
+    void set_callsign(std::string new_callsign) {
+        callsign = std::move(new_callsign);
    }

    void inc_hit() {
@@ -121,8 +135,8 @@ struct AircraftRecentEntry {
        velo = decode_frame_velo(frame);
    }

-    void set_info_string(std::string& new_info_string) {
-        info_string = new_info_string;
+    void set_info_string(std::string new_info_string) {
+        info_string = std::move(new_info_string);
    }

    void reset_age() {
@@ -131,59 +145,59 @@ struct AircraftRecentEntry {

    void inc_age(int delta) {
        age += delta;
-        if (age < ADSB_CURRENT) {
-            age_state = pos.valid ? 0 : 1;
-        } else if (age < ADSB_RECENT) {
-            age_state = 2;
-        } else if (age < ADSB_REMOVE) {
-            age_state = 3;
-        } else {
-            age_state = 4;
-        }
+
+        if (age < ADSBAgeLimit::Current)
+            state = pos.valid ? ADSBAgeState::Invalid
+                              : ADSBAgeState::Current;
+
+        else if (age < ADSBAgeLimit::Recent)
+            state = ADSBAgeState::Recent;
+
+        else if (age < ADSBAgeLimit::Expired)
+            state = ADSBAgeState::Old;
+
+        else
+            state = ADSBAgeState::Expired;
    }
 };

+// NB: uses std::list underneath so assuming refs are NOT invalidated.
 using AircraftRecentEntries = RecentEntries<AircraftRecentEntry>;

+/* Holds data for logging. */
+struct ADSBLogEntry {
+    std::string raw_data{};
+    std::string icao{};
+    std::string callsign{};
+    adsb_pos pos{};
+    adsb_vel vel{};
+    uint8_t vel_type{};
+};
+
+// TODO: Make logging optional.
+/* Logs entries to a log file. */
 class ADSBLogger {
   public:
    Optional<File::Error> append(const std::filesystem::path& filename) {
        return log_file.append(filename);
    }
-    void log_str(std::string& logline);
+    void log(const ADSBLogEntry& log_entry);

   private:
    LogFile log_file{};
 };

+/* Shows detailed information about an aircraft. */
 class ADSBRxAircraftDetailsView : public View {
   public:
-    ADSBRxAircraftDetailsView(NavigationView&, const AircraftRecentEntry& entry, const std::function<void(void)> on_close);
-    ~ADSBRxAircraftDetailsView();
-
-    ADSBRxAircraftDetailsView(const ADSBRxAircraftDetailsView&) = delete;
-    ADSBRxAircraftDetailsView(ADSBRxAircraftDetailsView&&) = delete;
-    ADSBRxAircraftDetailsView& operator=(const ADSBRxAircraftDetailsView&) = delete;
-    ADSBRxAircraftDetailsView& operator=(ADSBRxAircraftDetailsView&&) = delete;
+    ADSBRxAircraftDetailsView(
+        NavigationView&,
+        const AircraftRecentEntry& entry);

    void focus() override;
-
-    void update(const AircraftRecentEntry& entry);
-
-    std::string title() const override { return "AC Details"; };
-
-    AircraftRecentEntry get_current_entry() { return entry_copy; }
-
-    std::database::AircraftDBRecord aircraft_record = {};
+    std::string title() const override { return "AC Details"; }

   private:
-    AircraftRecentEntry entry_copy{0};
-    std::function<void(void)> on_close_{};
-    bool send_updates{false};
-    std::database db = {};
-    std::string icao_code = "";
-    int return_code = 0;
-
    Labels labels{
        {{0 * 8, 1 * 16}, "ICAO:", Color::light_grey()},
        {{0 * 8, 2 * 16}, "Registration:", Color::light_grey()},
@@ -236,36 +250,34 @@ class ADSBRxAircraftDetailsView : public View {
        "Back"};
 };

+/* Shows detailed information about an aircraft's flight. */
 class ADSBRxDetailsView : public View {
   public:
-    ADSBRxDetailsView(NavigationView&, const AircraftRecentEntry& entry, const std::function<void(void)> on_close);
-    ~ADSBRxDetailsView();
+    ADSBRxDetailsView(NavigationView&, const AircraftRecentEntry& entry);

    ADSBRxDetailsView(const ADSBRxDetailsView&) = delete;
-    ADSBRxDetailsView(ADSBRxDetailsView&&) = delete;
    ADSBRxDetailsView& operator=(const ADSBRxDetailsView&) = delete;
-    ADSBRxDetailsView& operator=(ADSBRxDetailsView&&) = delete;

    void focus() override;
-
    void update(const AircraftRecentEntry& entry);

-    std::string title() const override { return "Details"; };
+    /* Calls forwarded to map view if shown. */
+    bool map_active() const { return geomap_view_; }
+    void clear_map_markers();
+    /* Adds a marker for the entry to the map. Returns true on success. */
+    bool add_map_marker(const AircraftRecentEntry& entry);

-    AircraftRecentEntry get_current_entry() { return entry_copy; }
-
-    std::database::AirlinesDBRecord airline_record = {};
-
-    GeoMapView* geomap_view{nullptr};
+    std::string title() const override { return "Details"; }

   private:
-    AircraftRecentEntry entry_copy{0};
-    std::function<void(void)> on_close_{};
-    ADSBRxAircraftDetailsView* aircraft_details_view{nullptr};
-    bool send_updates{false};
-    std::database db = {};
-    std::string airline_code = "";
-    int return_code = 0;
+    void refresh_ui();
+
+    GeoMapView* geomap_view_{nullptr};
+    ADSBRxAircraftDetailsView* aircraft_details_view_{nullptr};
+
+    // NB: Keeping a copy so that it doesn't end up dangling
+    // if removed from the recent entries list.
+    AircraftRecentEntry entry_{AircraftRecentEntry::invalid_key};

    Labels labels{
        {{0 * 8, 1 * 16}, "ICAO:", Color::light_grey()},
@@ -320,6 +332,7 @@ class ADSBRxDetailsView : public View {
        "See on map"};
 };

+/* Main ADSB application view and message dispatch. */
 class ADSBRxView : public View {
   public:
    ADSBRxView(NavigationView& nav);
@@ -331,42 +344,52 @@ class ADSBRxView : public View {
    ADSBRxView& operator=(ADSBRxView&&) = delete;

    void focus() override;
-
    std::string title() const override { return "ADS-B RX"; };

-    void replace_entry(AircraftRecentEntry& entry);
-    void remove_old_entries();
-    AircraftRecentEntry find_or_create_entry(uint32_t ICAO_address);
-    void sort_entries_by_state();
-
   private:
-    rf::Frequency prevFreq = {0};
+    RxRadioState radio_state_{
+        1'090'000'000 /* frequency */,
+        2'500'000 /* bandwidth */,
+        2'000'000 /* sampling rate */,
+        ReceiverModel::Mode::SpectrumAnalysis};
+    app_settings::SettingsManager settings_{
+        "rx_adsb", app_settings::Mode::RX};
+
    std::unique_ptr<ADSBLogger> logger{};
+
+    /* Event Handlers */
    void on_frame(const ADSBFrameMessage* message);
    void on_tick_second();
-    int updateState = {0};
-    void updateRecentEntries();
-    void updateDetailsAndMap(int ageStep);
-
-#define MARKER_UPDATE_SECONDS (5)
-    int ticksSinceMarkerRefresh{MARKER_UPDATE_SECONDS - 1};
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
-
-    const RecentEntriesColumns columns{{{"ICAO/Call", 9},
-                                        {"Lvl", 3},
-                                        {"Spd", 3},
-                                        {"Amp", 3},
-                                        {"Hit", 3},
-                                        {"Age", 4}}};
-    AircraftRecentEntries recent{};
-    RecentEntriesView<RecentEntries<AircraftRecentEntry>> recent_entries_view{columns, recent};
+    void refresh_ui();

    SignalToken signal_token_tick_second{};
+    uint8_t tick_count = 0;
+    uint16_t ticks_since_marker_refresh{MARKER_UPDATE_SECONDS};
+
+    /* Max number of entries that can be updated in a single pass.
+     * 16 is one screen of recent entries. */
+    static constexpr uint8_t max_update_entries = 16;
+
+    /* Recent Entries */
+    const RecentEntriesColumns columns{
+        {{"ICAO/Call", 9},
+         {"Lvl", 3},
+         {"Spd", 3},
+         {"Amp", 3},
+         {"Hit", 3},
+         {"Age", 4}}};
+    AircraftRecentEntries recent{};
+    RecentEntriesView<AircraftRecentEntries> recent_entries_view{columns, recent};
+
+    /* Entry Management */
+    void update_recent_entries(int age_delta);
+    AircraftRecentEntry& find_or_create_entry(uint32_t ICAO_address);
+    void sort_entries_by_state();
+    void remove_expired_entries();
+
+    /* The key of the entry in the details view if shown. */
+    AircraftRecentEntry::Key detail_key{AircraftRecentEntry::invalid_key};
    ADSBRxDetailsView* details_view{nullptr};
-    uint32_t detailed_entry_key{0};
-    bool send_updates{false};

    Labels labels{
        {{0 * 8, 0 * 8}, "LNA:   VGA:   AMP:", Color::light_grey()}};
@@ -381,7 +404,17 @@ class ADSBRxView : public View {
        {18 * 8, 0 * 16}};

    RSSI rssi{
-        {20 * 8, 4, 10 * 8, 8},
+        {20 * 8, 4, 10 * 7, 8},
+    };
+
+    ActivityDot status_frame{
+        {screen_width - 3, 5, 2, 2},
+        Color::white(),
+    };
+
+    ActivityDot status_good_frame{
+        {screen_width - 3, 9, 2, 2},
+        Color::green(),
    };

    MessageHandlerRegistration message_handler_frame{
@@ -26,7 +26,6 @@
 #include "manchester.hpp"
 #include "string_format.hpp"
 #include "portapack.hpp"
-#include "cpld_update.hpp"
 #include "baseband_api.hpp"

 #include <cstring>
@@ -187,13 +186,12 @@ ADSBSquawkView::ADSBSquawkView(
                  &field_squawk});
 }

-void ADSBSquawkView::collect_frames(const uint32_t ICAO_address, std::vector<ADSBFrame>& frame_list) {
+void ADSBSquawkView::collect_frames(const uint32_t /*ICAO_address*/, std::vector<ADSBFrame>& frame_list) {
    if (!enabled) return;

    ADSBFrame temp_frame;
-    (void)ICAO_address;

-    encode_frame_squawk(temp_frame, field_squawk.concatenate_4_octal_u16());
+    encode_frame_squawk(temp_frame, field_squawk.to_integer());

    frame_list.emplace_back(temp_frame);
 }
@@ -273,17 +271,12 @@ void ADSBTxView::focus() {
 }

 ADSBTxView::~ADSBTxView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_adsb", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, withouth ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void ADSBTxView::generate_frames() {
-    const uint32_t ICAO_address = sym_icao.value_hex_u64();
+    const uint32_t ICAO_address = sym_icao.to_integer();

    frames.clear();

@@ -303,8 +296,9 @@ void ADSBTxView::generate_frames() {
 void ADSBTxView::start_tx() {
    generate_frames();

-    transmitter_model.set_sampling_rate(4000000U);
-    transmitter_model.set_baseband_bandwidth(10000000);
+    /* Already tested , with SDR Angel + another Hackrf RX  and dump1090 + SDR RLT. Final conclusion is TX LPF 6 Mhz is
+     * the best settings to fulfill ADSB transponder spectrum mask requirements (<=-20 dB's at +-7Mhz , <=-40 dB's at +-23Mhz )
+     * and not showing any ADSB data decoding degradation.*/
    transmitter_model.enable();

    baseband::set_adsb();
@@ -327,18 +321,10 @@ ADSBTxView::ADSBTxView(
                  &text_frame,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_adsb", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -29,6 +29,7 @@
 #include "message.hpp"
 #include "transmitter_model.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "portapack.hpp"

 using namespace adsb;
@@ -134,7 +135,7 @@ class ADSBSquawkView : public OptionTabView {
    SymField field_squawk{
        {10 * 8, 2 * 16},
        4,
-        SymField::SYMFIELD_OCT};
+        SymField::Type::Oct};
 };

 class ADSBTXThread {
@@ -201,9 +202,13 @@ class ADSBTxView : public View {
                -1
        };*/

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{
+        1090000000 /* frequency */,
+        6000000 /* bandwidth */,
+        4000000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_adsb", app_settings::Mode::TX};

    // tx_modes tx_mode = IDLE;
    NavigationView& nav_;
@@ -231,7 +236,7 @@ class ADSBTxView : public View {
    SymField sym_icao{
        {10 * 8, 4 * 8},
        6,
-        SymField::SYMFIELD_HEX};
+        SymField::Type::Hex};

    Text text_frame{
        {1 * 8, 29 * 8, 14 * 8, 16},
@@ -42,15 +42,12 @@ void RecentEntriesTable<APRSRecentEntries>::draw(
    const Rect& target_rect,
    Painter& painter,
    const Style& style) {
-    char aged_color;
    Color target_color;
    // auto entry_age = entry.age;

    target_color = Color::green();

-    aged_color = 0x10;
-    std::string entry_string = "\x1B";
-    entry_string += aged_color;
+    std::string entry_string = "";

    entry_string += entry.source_formatted;
    entry_string.append(10 - entry.source_formatted.size(), ' ');
@@ -73,12 +70,8 @@ void APRSRxView::focus() {
    options_region.focus();
 }

-void APRSRxView::update_freq(rf::Frequency f) {
-    receiver_model.set_tuning_frequency(f);
-}
-
 APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect)
-    : View(parent_rect) {
+    : View(parent_rect), nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_aprs_rx);

    add_children({&rssi,
@@ -92,14 +85,6 @@ APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect)
                  &record_view,
                  &console});

-    // load app settings
-    auto rc = settings.load("rx_aprs", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-    }
-
    // DEBUG
    record_view.on_error = [&nav](std::string message) {
        nav.display_modal("Error", message);
@@ -119,19 +104,7 @@ APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect)
        }
    };

-    field_frequency.set_value(receiver_model.tuning_frequency());
    field_frequency.set_step(100);
-    field_frequency.on_change = [this](rf::Frequency f) {
-        update_freq(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            update_freq(f);
-            field_frequency.set_value(f);
-        };
-    };
-
    options_region.set_selected_index(0, true);

    logger = std::make_unique<APRSLogger>();
@@ -143,9 +116,6 @@ APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect)
    audio::set_rate(audio::Rate::Hz_24000);
    audio::output::start();

-    receiver_model.set_sampling_rate(3072000);
-    receiver_model.set_baseband_bandwidth(1750000);
-    receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
    receiver_model.enable();
 }

@@ -211,9 +181,6 @@ void APRSRxView::on_show() {
 }

 APRSRxView::~APRSRxView() {
-    // save app settings
-    settings.save("rx_aprs", &app_settings);
-
    audio::output::stop();
    receiver_model.disable();
    baseband::shutdown();
@@ -26,9 +26,11 @@
 #include "ui.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
-#include "ui_record_view.hpp"  // DEBUG
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
 #include "ui_geomap.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "recent_entries.hpp"
 #include "ui_tabview.hpp"

@@ -187,9 +189,14 @@ class APRSRxView : public View {
    void on_data(uint32_t value, bool is_data);
    bool reset_console = false;

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        144390000 /* frequency */,
+        1750000 /* bandwidth */,
+        3072000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "rx_aprs", app_settings::Mode::RX};

    uint8_t console_color{0};
    std::string str_log{""};
@@ -201,11 +208,9 @@ class APRSRxView : public View {
    VGAGainField field_vga{
        {18 * 8, 0 * 16}};
    RSSI rssi{
-        {21 * 8, 0, 6 * 8, 4},
-    };
+        {21 * 8, 0, 6 * 8, 4}};
    Channel channel{
-        {21 * 8, 5, 6 * 8, 4},
-    };
+        {21 * 8, 5, 6 * 8, 4}};

    AudioVolumeField field_volume{
        {28 * 8, 0 * 16}};
@@ -218,9 +223,9 @@ class APRSRxView : public View {
         {"AUS", 2},
         {"NZ ", 3}}};

-    FrequencyField field_frequency{
+    RxFrequencyField field_frequency{
        {3 * 8, 0 * 16},
-    };
+        nav_};

    // DEBUG
    RecordView record_view{
@@ -234,8 +239,6 @@ class APRSRxView : public View {
    Console console{
        {0, 2 * 16, 240, 240}};

-    void update_freq(rf::Frequency f);
-
    std::unique_ptr<APRSLogger> logger{};
 };

@@ -26,7 +26,6 @@
 #include "aprs.hpp"
 #include "string_format.hpp"
 #include "portapack.hpp"
-#include "cpld_update.hpp"
 #include "baseband_api.hpp"
 #include "portapack_shared_memory.hpp"
 #include "portapack_persistent_memory.hpp"
@@ -44,27 +43,20 @@ void APRSTXView::focus() {
 }

 APRSTXView::~APRSTXView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_aprs", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit.
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void APRSTXView::start_tx() {
+    // TODO: Clean up this API to take string_views to avoid allocations.
    make_aprs_frame(
-        sym_source.value_string().c_str(), num_ssid_source.value(),
-        sym_dest.value_string().c_str(), num_ssid_dest.value(),
+        sym_source.to_string().c_str(), num_ssid_source.value(),
+        sym_dest.to_string().c_str(), num_ssid_dest.value(),
        payload);

    // uint8_t * bb_data_ptr = shared_memory.bb_data.data;
    // text_payload.set(to_string_hex_array(bb_data_ptr + 56, 15));

-    transmitter_model.set_tuning_frequency(persistent_memory::tuned_frequency());
-    transmitter_model.set_sampling_rate(AFSK_TX_SAMPLERATE);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    baseband::set_afsk_data(
@@ -97,14 +89,6 @@ APRSTXView::APRSTXView(NavigationView& nav) {
                  &button_set,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_aprs", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    button_set.on_select = [this, &nav](Button&) {
        text_prompt(
            nav,
@@ -116,9 +100,9 @@ APRSTXView::APRSTXView(NavigationView& nav) {
    };

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            receiver_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -27,8 +27,10 @@
 #include "ui_transmitter.hpp"

 #include "message.hpp"
+#include "modems.hpp"
 #include "transmitter_model.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "portapack.hpp"

 namespace ui {
@@ -43,9 +45,13 @@ class APRSTXView : public View {
    std::string title() const override { return "APRS TX"; };

   private:
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{
+        144390000 /* frequency */,
+        1750000 /* bandwidth */,
+        AFSK_TX_SAMPLERATE /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_aprs", app_settings::Mode::TX};

    std::string payload{""};

@@ -63,7 +69,8 @@ class APRSTXView : public View {
    SymField sym_source{
        {7 * 8, 1 * 16},
        6,
-        SymField::SYMFIELD_ALPHANUM};
+        SymField::Type::Alpha};
+
    NumberField num_ssid_source{
        {19 * 8, 1 * 16},
        2,
@@ -74,7 +81,7 @@ class APRSTXView : public View {
    SymField sym_dest{
        {7 * 8, 2 * 16},
        6,
-        SymField::SYMFIELD_ALPHANUM};
+        SymField::Type::Alpha};

    NumberField num_ssid_dest{
        {19 * 8, 2 * 16},
@@ -24,7 +24,6 @@
 #include "string_format.hpp"

 #include "baseband_api.hpp"
-#include "cpld_update.hpp"
 #include "portapack_persistent_memory.hpp"

 using namespace portapack;
@@ -137,13 +136,8 @@ void BHTView::on_tx_progress(const uint32_t progress, const bool done) {
 }

 BHTView::~BHTView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_bht", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 BHTView::BHTView(NavigationView& nav) {
@@ -157,21 +151,12 @@ BHTView::BHTView(NavigationView& nav) {
                  &progressbar,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_bht", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    field_speed.set_value(1);

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -233,7 +218,6 @@ EPARView::EPARView(

    field_city.set_value(0);
    field_group.set_selected_index(2);
-
    field_city.on_change = [this](int32_t) { generate_message(); };
    field_group.on_change = [this](size_t, int32_t) { generate_message(); };

@@ -243,11 +227,11 @@ EPARView::EPARView(

    size_t n = 0;
    for (auto& relay_state : relay_states) {
-        relay_state.on_change = relay_state_fn;
        relay_state.set_parent_rect({static_cast<Coord>(90 + (n * 36)),
                                     80,
                                     24, 24});
        relay_state.set_options(relay_options);
+        relay_state.on_change = relay_state_fn;  // NB: set after set_options to avoid startup call.
        add_child(&relay_state);
        n++;
    }
@@ -316,11 +300,11 @@ XylosView::XylosView(
    };

    field_header_a.on_change = field_fn;
-    field_header_b.on_change = [this](int32_t) { generate_message(); };
-    field_city.on_change = [this](int32_t) { generate_message(); };
-    field_family.on_change = [this](int32_t) { generate_message(); };
-    field_subfamily.on_change = [this](int32_t) { generate_message(); };
-    field_receiver.on_change = [this](int32_t) { generate_message(); };
+    field_header_b.on_change = field_fn;
+    field_city.on_change = field_fn;
+    field_family.on_change = field_fn;
+    field_subfamily.on_change = field_fn;
+    field_receiver.on_change = field_fn;

    checkbox_wcsubfamily.on_select = [this](Checkbox&, bool v) {
        field_subfamily.set_focusable(!v);
@@ -341,11 +325,11 @@ XylosView::XylosView(

    size_t n = 0;
    for (auto& relay_state : relay_states) {
-        relay_state.on_change = relay_state_fn;
        relay_state.set_parent_rect({static_cast<Coord>(54 + (n * 36)),
                                     134,
                                     24, 24});
        relay_state.set_options(relay_options);
+        relay_state.on_change = relay_state_fn;  // NB: set after set_options to avoid startup call.
        add_child(&relay_state);
        n++;
    }
@@ -32,6 +32,7 @@
 #include "transmitter_model.hpp"
 #include "encoders.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "portapack.hpp"

 namespace ui {
@@ -165,9 +166,9 @@ class BHTView : public View {
    std::string title() const override { return "BHT TX"; };

   private:
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "tx_bht", app_settings::Mode::TX};

    void on_tx_progress(const uint32_t progress, const bool done);
    void start_tx();
@@ -40,11 +40,8 @@ void BTLERxView::focus() {
    field_frequency.focus();
 }

-void BTLERxView::update_freq(rf::Frequency f) {
-    receiver_model.set_tuning_frequency(f);
-}
-
-BTLERxView::BTLERxView(NavigationView& nav) {
+BTLERxView::BTLERxView(NavigationView& nav)
+    : nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_btle_rx);

    add_children({&rssi,
@@ -56,16 +53,7 @@ BTLERxView::BTLERxView(NavigationView& nav) {
                  &button_modem_setup,
                  &console});

-    // load app settings
-    auto rc = settings.load("rx_btle", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-    }
-
-    // Auto-configure modem for LCR RX (will be removed later)
-    update_freq(2426000000);
+    // Auto-configure modem for LCR RX (TODO: remove later)
    auto def_bell202 = &modem_defs[0];
    persistent_memory::set_modem_baudrate(def_bell202->baudrate);
    serial_format_t serial_format;
@@ -75,32 +63,18 @@ BTLERxView::BTLERxView(NavigationView& nav) {
    serial_format.bit_order = LSB_FIRST;
    persistent_memory::set_serial_format(serial_format);

-    field_frequency.set_value(receiver_model.tuning_frequency());
    field_frequency.set_step(100);
-    field_frequency.on_change = [this](rf::Frequency f) {
-        update_freq(f);
-    };
-    field_frequency.on_edit = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            update_freq(f);
-            field_frequency.set_value(f);
-        };
-    };

    button_modem_setup.on_select = [&nav](Button&) {
        nav.push<ModemSetupView>();
    };

    // Auto-configure modem for LCR RX (will be removed later)
-    baseband::set_btle(persistent_memory::modem_baudrate(), 8, 0, false);
+    baseband::set_btlerx(channel_number);

    audio::set_rate(audio::Rate::Hz_24000);
    audio::output::start();

-    receiver_model.set_sampling_rate(4000000);
-    receiver_model.set_baseband_bandwidth(4000000);
-    receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
    receiver_model.enable();
 }

@@ -148,10 +122,6 @@ void BTLERxView::on_data(uint32_t value, bool is_data) {
 }

 BTLERxView::~BTLERxView() {
-    // save app settings
-    app_settings.rx_frequency = field_frequency.value();
-    settings.save("rx_btle", &app_settings);
-
    audio::output::stop();
    receiver_model.disable();
    baseband::shutdown();
@@ -27,8 +27,10 @@
 #include "ui.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
 #include "app_settings.hpp"
-#include "ui_record_view.hpp"  // DEBUG
+#include "radio_state.hpp"
+#include "ui_record_view.hpp"

 #include "utility.hpp"

@@ -46,13 +48,20 @@ class BTLERxView : public View {
   private:
    void on_data(uint32_t value, bool is_data);

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    NavigationView& nav_;
+    RxRadioState radio_state_{
+        2426000000 /* frequency */,
+        4000000 /* bandwidth */,
+        4000000 /* sampling rate */,
+        ReceiverModel::Mode::WidebandFMAudio};
+    app_settings::SettingsManager settings_{
+        "rx_btle", app_settings::Mode::RX};

    uint8_t console_color{0};
    uint32_t prev_value{0};

+    static constexpr uint8_t channel_number = 37;
+
    RFAmpField field_rf_amp{
        {13 * 8, 0 * 16}};
    LNAGainField field_lna{
@@ -60,15 +69,13 @@ class BTLERxView : public View {
    VGAGainField field_vga{
        {18 * 8, 0 * 16}};
    RSSI rssi{
-        {21 * 8, 0, 6 * 8, 4},
-    };
+        {21 * 8, 0, 6 * 8, 4}};
    Channel channel{
-        {21 * 8, 5, 6 * 8, 4},
-    };
+        {21 * 8, 5, 6 * 8, 4}};

-    FrequencyField field_frequency{
+    RxFrequencyField field_frequency{
        {0 * 8, 0 * 16},
-    };
+        nav_};

    Button button_modem_setup{
        {240 - 12 * 8, 1 * 16, 96, 24},
@@ -77,9 +84,6 @@ class BTLERxView : public View {
    Console console{
        {0, 4 * 16, 240, 240}};

-    void update_freq(rf::Frequency f);
-    // void on_data_afsk(const AFSKDataMessage& message);
-
    MessageHandlerRegistration message_handler_packet{
        Message::ID::AFSKData,
        [this](Message* const p) {
@@ -20,15 +20,21 @@
 */

 #include "ui_debug.hpp"
+#include "debug.hpp"

 #include "ch.h"

 #include "radio.hpp"
 #include "string_format.hpp"
+#include "crc.hpp"

 #include "audio.hpp"

 #include "ui_sd_card_debug.hpp"
+#include "ui_font_fixed_8x16.hpp"
+#include "ui_styles.hpp"
+#include "ui_painter.hpp"
+#include "ui_external_items_menu_loader.hpp"

 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
@@ -118,12 +124,12 @@ void TemperatureWidget::paint(Painter& painter) {
 }

 TemperatureWidget::temperature_t TemperatureWidget::temperature(const sample_t sensor_value) const {
-    /*It seems to be a temperature difference of 25C*/
-    return -40 + (sensor_value * 4.31) + 25;  // max2837 datasheet temp 25ºC has sensor value: 15
+    // Scaling is different for MAX2837 vs MAX2839 so it's now done in the respective chip-specific module
+    return sensor_value;
 }

 std::string TemperatureWidget::temperature_str(const temperature_t temperature) const {
-    return to_string_dec_int(temperature, temp_len - 1) + "C";
+    return to_string_dec_int(temperature, temp_len - 2) + STR_DEGREES_C;
 }

 Coord TemperatureWidget::screen_y(
@@ -153,11 +159,8 @@ void TemperatureView::focus() {
 /* RegistersWidget *******************************************************/

 RegistersWidget::RegistersWidget(
-    RegistersWidgetConfig&& config,
-    std::function<uint32_t(const size_t register_number)>&& reader)
-    : Widget{},
-      config(std::move(config)),
-      reader(std::move(reader)) {
+    RegistersWidgetConfig&& config)
+    : Widget{}, config(std::move(config)), page_number(0) {
 }

 void RegistersWidget::update() {
@@ -174,7 +177,7 @@ void RegistersWidget::paint(Painter& painter) {
 void RegistersWidget::draw_legend(const Coord left, Painter& painter) {
    const auto pos = screen_pos();

-    for (size_t i = 0; i < config.registers_count; i += config.registers_per_row()) {
+    for (uint32_t i = 0; i < config.registers_count; i += config.registers_per_row()) {
        const Point offset{
            left, static_cast<int>((i / config.registers_per_row()) * row_height)};

@@ -191,12 +194,12 @@ void RegistersWidget::draw_values(
    Painter& painter) {
    const auto pos = screen_pos();

-    for (size_t i = 0; i < config.registers_count; i++) {
+    for (uint32_t i = 0; i < config.registers_count; i++) {
        const Point offset = {
            static_cast<int>(left + config.legend_width() + 8 + (i % config.registers_per_row()) * (config.value_width() + 8)),
            static_cast<int>((i / config.registers_per_row()) * row_height)};

-        const auto value = reader(i);
+        const auto value = reg_read(i);

        const auto text = to_string_hex(value, config.value_length());
        painter.draw_string(
@@ -206,19 +209,61 @@ void RegistersWidget::draw_values(
    }
 }

+uint32_t RegistersWidget::reg_read(const uint32_t register_number) {
+    if (register_number < config.registers_count) {
+        switch (config.chip_type) {
+            case CT_PMEM:
+                return portapack::persistent_memory::pmem_data_word((page_number * config.registers_count + register_number) / 4) >> (register_number % 4 * 8);
+            case CT_RFFC5072:
+                return radio::debug::first_if::register_read(register_number);
+            case CT_MAX283X:
+                return radio::debug::second_if::register_read(register_number);
+            case CT_SI5351:
+                return portapack::clock_generator.read_register(register_number);
+            case CT_AUDIO:
+                return audio::debug::reg_read(register_number);
+        }
+    }
+    return 0xFFFF;
+}
+
+void RegistersWidget::reg_write(const uint32_t register_number, const uint32_t value) {
+    if (register_number < config.registers_count) {
+        switch (config.chip_type) {
+            case CT_PMEM:
+                break;
+            case CT_RFFC5072:
+                radio::debug::first_if::register_write(register_number, value);
+                break;
+            case CT_MAX283X:
+                radio::debug::second_if::register_write(register_number, value);
+                break;
+            case CT_SI5351:
+                portapack::clock_generator.write_register(register_number, value);
+                break;
+            case CT_AUDIO:
+                audio::debug::reg_write(register_number, value);
+                break;
+        }
+    }
+}
+
 /* RegistersView *********************************************************/

 RegistersView::RegistersView(
    NavigationView& nav,
    const std::string& title,
-    RegistersWidgetConfig&& config,
-    std::function<uint32_t(const size_t register_number)>&& reader)
-    : registers_widget{std::move(config), std::move(reader)} {
+    RegistersWidgetConfig&& config)
+    : registers_widget{std::move(config)} {
    add_children({
        &text_title,
        &registers_widget,
        &button_update,
        &button_done,
+        &labels,
+        &field_write_reg_num,
+        &field_write_data_val,
+        &button_write,
    });

    button_update.on_select = [this](Button&) {
@@ -231,6 +276,20 @@ RegistersView::RegistersView(
    text_title.set_parent_rect({(240 - static_cast<int>(title.size()) * 8) / 2, 16,
                                static_cast<int>(title.size()) * 8, 16});
    text_title.set(title);
+
+    field_write_reg_num.on_change = [this](SymField&) {
+        field_write_data_val.set_value(this->registers_widget.reg_read(field_write_reg_num.to_integer()));
+        field_write_data_val.set_dirty();
+    };
+
+    const auto value = registers_widget.reg_read(0);
+    field_write_data_val.set_value(value);
+
+    button_write.set_style(&Styles::red);
+    button_write.on_select = [this](Button&) {
+        this->registers_widget.reg_write(field_write_reg_num.to_integer(), field_write_data_val.to_integer());
+        this->registers_widget.update();
+    };
 }

 void RegistersView::focus() {
@@ -247,6 +306,7 @@ void ControlsSwitchesWidget::on_show() {

 bool ControlsSwitchesWidget::on_key(const KeyEvent key) {
    key_event_mask = 1 << toUType(key);
+    long_press_key_event_mask = key_is_long_pressed(key) ? key_event_mask : 0;
    return true;
 }

@@ -259,9 +319,9 @@ void ControlsSwitchesWidget::paint(Painter& painter) {
        {32, 64, 16, 16},  // Down
        {32, 0, 16, 16},   // Up
        {32, 32, 16, 16},  // Select
+        {96, 0, 16, 16},   // Dfu
        {16, 96, 16, 16},  // Encoder phase 0
        {48, 96, 16, 16},  // Encoder phase 1
-        {96, 0, 16, 16},   // Dfu
        {96, 64, 16, 16},  // Touch
    }};

@@ -278,9 +338,9 @@ void ControlsSwitchesWidget::paint(Painter& painter) {
        {32 + 1, 64 + 1, 16 - 2, 16 - 2},  // Down
        {32 + 1, 0 + 1, 16 - 2, 16 - 2},   // Up
        {32 + 1, 32 + 1, 16 - 2, 16 - 2},  // Select
+        {96 + 1, 0 + 1, 16 - 2, 16 - 2},   // Dfu
        {16 + 1, 96 + 1, 16 - 2, 16 - 2},  // Encoder phase 0
        {48 + 1, 96 + 1, 16 - 2, 16 - 2},  // Encoder phase 1
-        {96 + 1, 0 + 1, 16 - 2, 16 - 2},   // Dfu
    }};

    auto switches_raw = control::debug::switches();
@@ -324,6 +384,14 @@ void ControlsSwitchesWidget::paint(Painter& painter) {

        switches_event >>= 1;
    }
+
+    switches_event = long_press_key_event_mask;
+    for (const auto r : events_rects) {
+        if (switches_event & 1)
+            painter.fill_rectangle(r + pos, Color::cyan());
+
+        switches_event >>= 1;
+    }
 }

 void ControlsSwitchesWidget::on_frame_sync() {
@@ -334,12 +402,21 @@ void ControlsSwitchesWidget::on_frame_sync() {

 DebugControlsView::DebugControlsView(NavigationView& nav) {
    add_children({
-        &text_title,
+        &labels,
        &switches_widget,
+        &options_switches_mode,
        &button_done,
    });

-    button_done.on_select = [&nav](Button&) { nav.pop(); };
+    button_done.on_select = [&nav](Button&) {
+        set_switches_long_press_config(0);
+        nav.pop();
+    };
+
+    options_switches_mode.on_change = [this](size_t, OptionsField::value_t v) {
+        (void)v;
+        set_switches_long_press_config(options_switches_mode.selected_index_value());
+    };
 }

 void DebugControlsView::focus() {
@@ -352,18 +429,10 @@ DebugPeripheralsMenuView::DebugPeripheralsMenuView(NavigationView& nav) {
    const char* max283x = hackrf_r9 ? "MAX2839" : "MAX2837";
    const char* si5351x = hackrf_r9 ? "Si5351A" : "Si5351C";
    add_items({
-        {"RFFC5072", ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav]() { nav.push<RegistersView>(
-                                                                                              "RFFC5072", RegistersWidgetConfig{31, 16},
-                                                                                              [](const size_t register_number) { return radio::debug::first_if::register_read(register_number); }); }},
-        {max283x, ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav, max283x]() { nav.push<RegistersView>(
-                                                                                                    max283x, RegistersWidgetConfig{32, 10},
-                                                                                                    [](const size_t register_number) { return radio::debug::second_if::register_read(register_number); }); }},
-        {si5351x, ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav, si5351x]() { nav.push<RegistersView>(
-                                                                                                    si5351x, RegistersWidgetConfig{96, 8},
-                                                                                                    [](const size_t register_number) { return portapack::clock_generator.read_register(register_number); }); }},
-        {audio::debug::codec_name(), ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav]() { nav.push<RegistersView>(
-                                                                                                              audio::debug::codec_name(), RegistersWidgetConfig{audio::debug::reg_count(), audio::debug::reg_bits()},
-                                                                                                              [](const size_t register_number) { return audio::debug::reg_read(register_number); }); }},
+        {"RFFC5072", ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav]() { nav.push<RegistersView>("RFFC5072", RegistersWidgetConfig{CT_RFFC5072, 31, 16}); }},
+        {max283x, ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav, max283x]() { nav.push<RegistersView>(max283x, RegistersWidgetConfig{CT_MAX283X, 32, 10}); }},
+        {si5351x, ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav, si5351x]() { nav.push<RegistersView>(si5351x, RegistersWidgetConfig{CT_SI5351, 96, 8}); }},
+        {audio::debug::codec_name(), ui::Color::dark_cyan(), &bitmap_icon_peripherals_details, [&nav]() { nav.push<RegistersView>(audio::debug::codec_name(), RegistersWidgetConfig{CT_AUDIO, audio::debug::reg_count(), audio::debug::reg_bits()}); }},
    });
    set_max_rows(2);  // allow wider buttons
 }
@@ -375,28 +444,73 @@ DebugMenuView::DebugMenuView(NavigationView& nav) {
        add_items({{"..", ui::Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }}});
    }
    add_items({
-        {"Memory", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugMemoryView>(); }},
+        {"Buttons Test", ui::Color::dark_cyan(), &bitmap_icon_controls, [&nav]() { nav.push<DebugControlsView>(); }},
+        {"Debug Dump", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { portapack::persistent_memory::debug_dump(); }},
+        {"M0 Stack Dump", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { stack_dump(); }},
+        {"Memory Dump", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugMemoryDumpView>(); }},
+        {"Memory Usage", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugMemoryView>(); }},
+        {"Peripherals", ui::Color::dark_cyan(), &bitmap_icon_peripherals, [&nav]() { nav.push<DebugPeripheralsMenuView>(); }},
+        {"Pers. Memory", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugPmemView>(); }},
        //{ "Radio State",	ui::Color::white(),	nullptr,	[&nav](){ nav.push<NotImplementedView>(); } },
        {"SD Card", ui::Color::dark_cyan(), &bitmap_icon_sdcard, [&nav]() { nav.push<SDCardDebugView>(); }},
-        {"Peripherals", ui::Color::dark_cyan(), &bitmap_icon_peripherals, [&nav]() { nav.push<DebugPeripheralsMenuView>(); }},
        {"Temperature", ui::Color::dark_cyan(), &bitmap_icon_temperature, [&nav]() { nav.push<TemperatureView>(); }},
-        {"Buttons Test", ui::Color::dark_cyan(), &bitmap_icon_controls, [&nav]() { nav.push<DebugControlsView>(); }},
-        {"Pmem", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugPmemView>(); }},
+        {"Touch Test", ui::Color::dark_cyan(), &bitmap_icon_notepad, [&nav]() { nav.push<DebugScreenTest>(); }},
    });
+
+    for (auto const& gridItem : ExternalItemsMenuLoader::load_external_items(app_location_t::DEBUG, nav)) {
+        add_item(gridItem);
+    };
+
    set_max_rows(2);  // allow wider buttons
 }

+/* DebugMemoryDumpView *********************************************************/
+
+DebugMemoryDumpView::DebugMemoryDumpView(NavigationView& nav) {
+    add_children({
+        &button_dump,
+        &button_read,
+        &button_write,
+        &button_done,
+        &labels,
+        &field_starting_address,
+        &field_byte_count,
+        &field_rw_address,
+        &field_data_value,
+    });
+
+    button_done.on_select = [&nav](Button&) { nav.pop(); };
+
+    button_dump.on_select = [this](Button&) {
+        if (field_byte_count.to_integer() != 0)
+            memory_dump((uint32_t*)field_starting_address.to_integer(), ((uint32_t)field_byte_count.to_integer() + 3) / 4, false);
+    };
+
+    button_read.on_select = [this](Button&) {
+        field_data_value.set_value(*(uint32_t*)field_rw_address.to_integer());
+        field_data_value.set_dirty();
+    };
+
+    button_write.set_style(&Styles::red);
+    button_write.on_select = [this](Button&) {
+        *(uint32_t*)field_rw_address.to_integer() = (uint32_t)field_data_value.to_integer();
+    };
+}
+
+void DebugMemoryDumpView::focus() {
+    button_done.focus();
+}
+
 /* DebugPmemView *********************************************************/

 DebugPmemView::DebugPmemView(NavigationView& nav)
-    : data{*reinterpret_cast<pmem_data*>(memory::map::backup_ram.base())}, registers_widget(RegistersWidgetConfig{page_size, 8}, std::bind(&DebugPmemView::registers_widget_feed, this, std::placeholders::_1)) {
-    static_assert(sizeof(pmem_data) == memory::map::backup_ram.size());
-
-    add_children({&text_page, &registers_widget, &text_checksum, &button_ok});
+    : registers_widget(RegistersWidgetConfig{CT_PMEM, page_size, 8}) {
+    add_children({&text_page, &registers_widget, &text_checksum, &text_checksum2, &button_ok});

    registers_widget.set_parent_rect({0, 32, 240, 192});

-    text_checksum.set("Size: " + to_string_dec_uint(portapack::persistent_memory::data_size()) + " CRC: " + to_string_hex(data.check_value, 8));
+    text_checksum.set("Size: " + to_string_dec_uint(portapack::persistent_memory::data_size(), 3) + "  CRC: " + to_string_hex(portapack::persistent_memory::pmem_stored_checksum(), 8));
+    text_checksum2.set("Calculated CRC: " + to_string_hex(portapack::persistent_memory::pmem_calculated_checksum(), 8));

    button_ok.on_select = [&nav](Button&) {
        nav.pop();
@@ -406,7 +520,7 @@ DebugPmemView::DebugPmemView(NavigationView& nav)
 }

 bool DebugPmemView::on_encoder(const EncoderEvent delta) {
-    page = std::max(0l, std::min((int32_t)page_max, page + delta));
+    registers_widget.set_page(std::max(0ul, std::min((uint32_t)page_count - 1, registers_widget.page() + delta)));

    update();

@@ -418,17 +532,62 @@ void DebugPmemView::focus() {
 }

 void DebugPmemView::update() {
-    text_page.set(to_string_hex(page_size * page, 2) + "+");
+    text_page.set(to_string_hex(registers_widget.page() * page_size, 2) + "+");
    registers_widget.update();
 }

-uint32_t DebugPmemView::registers_widget_feed(const size_t register_number) {
-    if (page_size * page + register_number >= memory::map::backup_ram.size()) {
-        return 0xff;
-    }
-    return data.regfile[(page_size * page + register_number) / 4] >> (register_number % 4 * 8);
+/* DebugScreenTest ****************************************************/
+
+DebugScreenTest::DebugScreenTest(NavigationView& nav)
+    : nav_{nav} {
+    set_focusable(true);
 }

+bool DebugScreenTest::on_key(const KeyEvent key) {
+    Painter painter;
+    switch (key) {
+        case KeyEvent::Select:
+            nav_.pop();
+            break;
+        case KeyEvent::Down:
+            painter.fill_rectangle({0, 0, screen_width, screen_height}, semirand());
+            break;
+        case KeyEvent::Left:
+            pen_color = semirand();
+            break;
+        default:
+            break;
+    }
+    return true;
+}
+
+bool DebugScreenTest::on_encoder(EncoderEvent delta) {
+    pen_size = clip<int32_t>(pen_size + delta, 1, screen_width);
+    return true;
+}
+
+bool DebugScreenTest::on_touch(const TouchEvent event) {
+    Painter painter;
+    pen_pos = event.point;
+    painter.fill_rectangle({pen_pos.x() - pen_size / 2, pen_pos.y() - pen_size / 2, pen_size, pen_size}, pen_color);
+    return true;
+}
+
+uint16_t DebugScreenTest::semirand() {
+    static uint64_t seed{0x0102030405060708};
+    seed = seed * 137;
+    seed = (seed >> 1) | ((seed & 0x01) << 63);
+    return (uint16_t)seed;
+}
+
+void DebugScreenTest::paint(Painter& painter) {
+    painter.fill_rectangle({0, 16, screen_width, screen_height - 16}, Color::white());
+    painter.draw_string({10 * 8, screen_height / 2}, Styles::white, "Use Stylus");
+    pen_color = semirand();
+}
+
+/* DebugLCRView *******************************************************/
+
 /*DebugLCRView::DebugLCRView(NavigationView& nav, std::string lcr_string) {

        std::string debug_text;
@@ -31,6 +31,7 @@
 #include "rffc507x.hpp"
 #include "portapack.hpp"
 #include "memory_map.hpp"
+#include "irq_controls.hpp"

 #include <functional>
 #include <utility>
@@ -47,8 +48,8 @@ class DebugMemoryView : public View {

   private:
    Text text_title{
-        {96, 96, 48, 16},
-        "Memory",
+        {72, 96, 96, 16},
+        "Memory Usage",
    };

    Text text_label_m0_core_free{
@@ -104,7 +105,7 @@ class TemperatureWidget : public Widget {
    static constexpr temperature_t display_temp_min = -10;  // Accomodate negative values, present in cold startup cases
    static constexpr temperature_t display_temp_scale = 3;
    static constexpr int bar_width = 1;
-    static constexpr int temp_len = 4;  // Now scale shows up to 4 chars ("-10C")
+    static constexpr int temp_len = 5;  // Now scale shows up to 5 chars ("-10ºC")
 };

 class TemperatureView : public View {
@@ -130,9 +131,18 @@ class TemperatureView : public View {
        "Done"};
 };

+typedef enum {
+    CT_PMEM,
+    CT_RFFC5072,
+    CT_MAX283X,
+    CT_SI5351,
+    CT_AUDIO,
+} chip_type_t;
+
 struct RegistersWidgetConfig {
-    size_t registers_count;
-    size_t register_bits;
+    chip_type_t chip_type;
+    uint32_t registers_count;
+    uint32_t register_bits;

    constexpr size_t legend_length() const {
        return (registers_count >= 0x10) ? 2 : 1;
@@ -173,17 +183,21 @@ struct RegistersWidgetConfig {

 class RegistersWidget : public Widget {
   public:
-    RegistersWidget(
-        RegistersWidgetConfig&& config,
-        std::function<uint32_t(const size_t register_number)>&& reader);
+    RegistersWidget(RegistersWidgetConfig&& config);

    void update();

    void paint(Painter& painter) override;

+    uint32_t reg_read(const uint32_t register_number);
+    void reg_write(const uint32_t register_number, const uint32_t value);
+
+    void set_page(int32_t value) { page_number = value; }
+    uint32_t page(void) { return page_number; }
+
   private:
    const RegistersWidgetConfig config;
-    const std::function<uint32_t(const size_t register_number)> reader;
+    uint32_t page_number;

    static constexpr size_t row_height = 16;

@@ -193,11 +207,7 @@ class RegistersWidget : public Widget {

 class RegistersView : public View {
   public:
-    RegistersView(
-        NavigationView& nav,
-        const std::string& title,
-        RegistersWidgetConfig&& config,
-        std::function<uint32_t(const size_t register_number)>&& reader);
+    RegistersView(NavigationView& nav, const std::string& title, RegistersWidgetConfig&& config);

    void focus();

@@ -207,12 +217,30 @@ class RegistersView : public View {
    RegistersWidget registers_widget;

    Button button_update{
-        {16, 256, 96, 24},
+        {16, 280, 96, 24},
        "Update"};

    Button button_done{
-        {128, 256, 96, 24},
+        {128, 280, 96, 24},
        "Done"};
+
+    Button button_write{
+        {144, 248, 80, 20},
+        "Write"};
+
+    Labels labels{
+        {{1 * 8, 248}, "Reg:", Color::light_grey()},
+        {{8 * 8, 248}, "Data:", Color::light_grey()}};
+
+    SymField field_write_reg_num{
+        {5 * 8, 248},
+        2,
+        SymField::Type::Hex};
+
+    SymField field_write_data_val{
+        {13 * 8, 248},
+        4,
+        SymField::Type::Hex};
 };

 class ControlsSwitchesWidget : public Widget {
@@ -220,7 +248,8 @@ class ControlsSwitchesWidget : public Widget {
    ControlsSwitchesWidget(
        Rect parent_rect)
        : Widget{parent_rect},
-          key_event_mask(0) {
+          key_event_mask(0),
+          long_press_key_event_mask{0} {
        set_focusable(true);
    }

@@ -231,6 +260,7 @@ class ControlsSwitchesWidget : public Widget {

   private:
    uint8_t key_event_mask;
+    uint8_t long_press_key_event_mask;

    MessageHandlerRegistration message_handler_frame_sync{
        Message::ID::DisplayFrameSync,
@@ -250,45 +280,96 @@ class DebugControlsView : public View {
    std::string title() const override { return "Buttons Test"; };

   private:
-    Text text_title{
-        {64, 16, 184, 16},
-        "Controls State",
-    };
+    Labels labels{
+        {{8 * 8, 1 * 16}, "Controls State", Color::white()},
+        {{0 * 8, 14 * 16}, "Long-Press Mode:", Color::grey()}};

    ControlsSwitchesWidget switches_widget{
        {80, 80, 80, 112},
    };

+    OptionsField options_switches_mode{
+        {17 * 8, 14 * 16},
+        8,
+        {
+            {"Disabled", 0},
+            {"Enabled", 0xFF},  // all KeyEvent bits to long-press mode
+        }};
+
    Button button_done{
        {72, 264, 96, 24},
        "Done"};
 };

+class DebugMemoryDumpView : public View {
+   public:
+    DebugMemoryDumpView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "Memory Dump"; };
+
+   private:
+    Button button_dump{
+        {72, 4 * 16, 96, 24},
+        "Dump"};
+
+    Button button_read{
+        {16, 11 * 16, 96, 24},
+        "Read"};
+
+    Button button_write{
+        {128, 11 * 16, 96, 24},
+        "Write"};
+
+    Button button_done{
+        {128, 240, 96, 24},
+        "Done"};
+
+    Labels labels{
+        {{5 * 8, 1 * 16}, "Dump Range to File", Color::yellow()},
+        {{0 * 8, 2 * 16}, "Starting Address: 0x", Color::light_grey()},
+        {{0 * 8, 3 * 16}, "Byte Count:       0x", Color::light_grey()},
+        {{3 * 8, 8 * 16}, "Read/Write Single Word", Color::yellow()},
+        {{0 * 8, 9 * 16}, "Memory Address:   0x", Color::light_grey()},
+        {{0 * 8, 10 * 16}, "Data Value:       0x", Color::light_grey()}};
+
+    SymField field_starting_address{
+        {20 * 8, 2 * 16},
+        8,
+        SymField::Type::Hex};
+
+    SymField field_byte_count{
+        {20 * 8, 3 * 16},
+        8,
+        SymField::Type::Hex};
+
+    SymField field_rw_address{
+        {20 * 8, 9 * 16},
+        8,
+        SymField::Type::Hex};
+
+    SymField field_data_value{
+        {20 * 8, 10 * 16},
+        8,
+        SymField::Type::Hex};
+};
+
 class DebugPmemView : public View {
   public:
    DebugPmemView(NavigationView& nav);
    void focus() override;
    bool on_encoder(const EncoderEvent delta) override;
-    std::string title() const override { return "Pmem"; }
+    std::string title() const override { return "P.Mem Debug"; }

   private:
-    struct pmem_data {
-        uint32_t regfile[63];
-        uint32_t check_value;
-    };
-
    static constexpr uint8_t page_size{96};  // Must be multiply of 4 otherwise bit shifting for register view wont work properly
-    static constexpr uint8_t page_max{(portapack::memory::map::backup_ram.size() + page_size - 1) / page_size - 1};
-
-    int32_t page{0};
-
-    const pmem_data& data;
+    static constexpr uint8_t page_count{(portapack::memory::map::backup_ram.size() + page_size - 1) / page_size};

    Text text_page{{16, 16, 208, 16}};

    RegistersWidget registers_widget;

-    Text text_checksum{{16, 240, 208, 16}};
+    Text text_checksum{{16, 232, 208, 16}};
+    Text text_checksum2{{16, 248, 208, 16}};

    Button button_ok{
        {240 / 3, 270, 240 / 3, 24},
@@ -296,7 +377,22 @@ class DebugPmemView : public View {
    };

    void update();
-    uint32_t registers_widget_feed(const size_t register_number);
+};
+
+class DebugScreenTest : public View {
+   public:
+    DebugScreenTest(NavigationView& nav);
+    bool on_key(KeyEvent key) override;
+    bool on_encoder(EncoderEvent delta) override;
+    bool on_touch(TouchEvent event) override;
+    uint16_t semirand();
+    void paint(Painter& painter) override;
+
+   private:
+    NavigationView& nav_;
+    Point pen_pos{};
+    Color pen_color{0};
+    int16_t pen_size{10};
 };

 /*class DebugLCRView : public View {
@@ -22,6 +22,7 @@
 #include "ui_dfu_menu.hpp"
 #include "portapack_shared_memory.hpp"
 #include "performance_counter.hpp"
+#include "portapack.hpp"

 namespace ui {

@@ -80,4 +81,61 @@ void DfuMenu::paint(Painter& painter) {
        ui::Color::dark_cyan());
 }

+DfuMenu2::DfuMenu2(NavigationView& nav)
+    : nav_(nav) {
+    add_children({&text_head,
+                  &labels,
+                  &text_info_line_1,
+                  &text_info_line_2,
+                  &text_info_line_3,
+                  &text_info_line_4,
+                  &text_info_line_5,
+                  &text_info_line_6,
+                  &text_info_line_7,
+                  &text_info_line_8,
+                  &text_info_line_9,
+                  &text_info_line_10});
+}
+
+void DfuMenu2::paint(Painter& painter) {
+    text_info_line_1.set(to_string_dec_uint(portapack::receiver_model.target_frequency(), 10));
+    text_info_line_2.set(to_string_dec_uint(portapack::receiver_model.baseband_bandwidth(), 10));
+    text_info_line_3.set(to_string_dec_uint(portapack::receiver_model.sampling_rate(), 10));
+    text_info_line_4.set(to_string_dec_uint((uint32_t)portapack::receiver_model.modulation(), 10));
+    text_info_line_5.set(to_string_dec_uint(portapack::receiver_model.am_configuration(), 10));
+    text_info_line_6.set(to_string_dec_uint(portapack::receiver_model.nbfm_configuration(), 10));
+    text_info_line_7.set(to_string_dec_uint(portapack::receiver_model.wfm_configuration(), 10));
+    text_info_line_8.set(to_string_dec_uint(portapack::transmitter_model.target_frequency(), 10));
+    text_info_line_9.set(to_string_dec_uint(portapack::transmitter_model.baseband_bandwidth(), 10));
+    text_info_line_10.set(to_string_dec_uint(portapack::transmitter_model.sampling_rate(), 10));
+
+    constexpr auto margin = 5;
+    constexpr auto lines = 10 + 2;
+
+    painter.fill_rectangle(
+        {{5 * CHARACTER_WIDTH - margin, 3 * LINE_HEIGHT - margin},
+         {19 * CHARACTER_WIDTH + margin * 2, lines * LINE_HEIGHT + margin * 2}},
+        ui::Color::black());
+
+    painter.fill_rectangle(
+        {{4 * CHARACTER_WIDTH - margin, 3 * LINE_HEIGHT - margin},
+         {CHARACTER_WIDTH, lines * LINE_HEIGHT + margin * 2}},
+        ui::Color::dark_cyan());
+
+    painter.fill_rectangle(
+        {{24 * CHARACTER_WIDTH + margin, 3 * LINE_HEIGHT - margin},
+         {CHARACTER_WIDTH, lines * LINE_HEIGHT + margin * 2}},
+        ui::Color::dark_cyan());
+
+    painter.fill_rectangle(
+        {{4 * CHARACTER_WIDTH - margin, 3 * LINE_HEIGHT - margin - 8},
+         {21 * CHARACTER_WIDTH + margin * 2, 8}},
+        ui::Color::dark_cyan());
+
+    painter.fill_rectangle(
+        {{4 * CHARACTER_WIDTH - margin, (lines + 3) * LINE_HEIGHT + margin},
+         {21 * CHARACTER_WIDTH + margin * 2, 8}},
+        ui::Color::dark_cyan());
+}
+
 } /* namespace ui */
@@ -57,14 +57,50 @@ class DfuMenu : public View {
        {{6 * CHARACTER_WIDTH, 11 * LINE_HEIGHT}, "M4 miss:", Color::dark_cyan()},
        {{6 * CHARACTER_WIDTH, 12 * LINE_HEIGHT}, "uptime:", Color::dark_cyan()}};

-    Text text_info_line_1{{15 * CHARACTER_WIDTH, 5 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_2{{15 * CHARACTER_WIDTH, 6 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_3{{15 * CHARACTER_WIDTH, 7 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_4{{15 * CHARACTER_WIDTH, 8 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_5{{15 * CHARACTER_WIDTH, 9 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_6{{15 * CHARACTER_WIDTH, 10 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_7{{15 * CHARACTER_WIDTH, 11 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
-    Text text_info_line_8{{15 * CHARACTER_WIDTH, 12 * LINE_HEIGHT, 5 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_1{{15 * CHARACTER_WIDTH, 5 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_2{{15 * CHARACTER_WIDTH, 6 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_3{{15 * CHARACTER_WIDTH, 7 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_4{{15 * CHARACTER_WIDTH, 8 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_5{{15 * CHARACTER_WIDTH, 9 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_6{{15 * CHARACTER_WIDTH, 10 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_7{{15 * CHARACTER_WIDTH, 11 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_8{{15 * CHARACTER_WIDTH, 12 * LINE_HEIGHT, 6 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+};
+
+class DfuMenu2 : public View {
+   public:
+    DfuMenu2(NavigationView& nav);
+    ~DfuMenu2() = default;
+
+    void paint(Painter& painter) override;
+
+   private:
+    NavigationView& nav_;
+
+    Text text_head{{6 * CHARACTER_WIDTH, 3 * LINE_HEIGHT, 14 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, "Radio Settings"};
+
+    Labels labels{
+        {{5 * CHARACTER_WIDTH, 5 * LINE_HEIGHT}, "RX Freq:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 6 * LINE_HEIGHT}, "RX BW:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 7 * LINE_HEIGHT}, "RX SampR:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 8 * LINE_HEIGHT}, "Modulatn:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 9 * LINE_HEIGHT}, "AM cfg:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 10 * LINE_HEIGHT}, "NBFM cfg:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 11 * LINE_HEIGHT}, "WFM cfg:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 12 * LINE_HEIGHT}, "TX Freq:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 13 * LINE_HEIGHT}, "TX BW:", Color::dark_cyan()},
+        {{5 * CHARACTER_WIDTH, 14 * LINE_HEIGHT}, "TX SampR:", Color::dark_cyan()}};
+
+    Text text_info_line_1{{14 * CHARACTER_WIDTH, 5 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_2{{14 * CHARACTER_WIDTH, 6 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_3{{14 * CHARACTER_WIDTH, 7 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_4{{14 * CHARACTER_WIDTH, 8 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_5{{14 * CHARACTER_WIDTH, 9 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_6{{14 * CHARACTER_WIDTH, 10 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_7{{14 * CHARACTER_WIDTH, 11 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_8{{14 * CHARACTER_WIDTH, 12 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_9{{14 * CHARACTER_WIDTH, 13 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
+    Text text_info_line_10{{14 * CHARACTER_WIDTH, 14 * LINE_HEIGHT, 10 * CHARACTER_WIDTH, 1 * LINE_HEIGHT}, ""};
 };

 } /* namespace ui */
@@ -24,7 +24,6 @@

 #include "baseband_api.hpp"
 #include "string_format.hpp"
-#include "cpld_update.hpp"

 using namespace portapack;

@@ -50,7 +49,6 @@ EncodersConfigView::EncodersConfigView(
                  &field_clk_step,
                  &field_frameduration,
                  &field_frameduration_step,
-                  &symfield_word,
                  &text_format,
                  &waveform});

@@ -65,10 +63,6 @@ EncodersConfigView::EncodersConfigView(
    options_enctype.set_options(enc_options);
    options_enctype.set_selected_index(0);

-    symfield_word.on_change = [this]() {
-        generate_frame();
-    };
-
    // Selecting input clock changes symbol and word duration
    field_clk.on_change = [this](int32_t value) {
        // value is in kHz, new_value is in us
@@ -99,33 +93,46 @@ void EncodersConfigView::focus() {
 }

 void EncodersConfigView::on_type_change(size_t index) {
-    std::string format_string = "";
-    size_t word_length;
-    char symbol_type;
+    // Remove existing SymField controls.
+    for (auto& symfield : symfields_word)
+        remove_child(symfield.get());
+    symfields_word.clear();

    encoder_def = &encoder_defs[index];
-
    field_clk.set_value(encoder_def->default_speed / 1000);
    field_repeat_min.set_value(encoder_def->repeat_min);

-    // SymField setup
-    word_length = encoder_def->word_length;
-    symfield_word.set_length(word_length);
-    size_t n = 0, i = 0;
-    while (n < word_length) {
-        symbol_type = encoder_def->word_format[i++];
-        if (symbol_type == 'A') {
-            symfield_word.set_symbol_list(n++, encoder_def->address_symbols);
-            format_string += 'A';
-        } else if (symbol_type == 'D') {
-            symfield_word.set_symbol_list(n++, encoder_def->data_symbols);
-            format_string += 'D';
+    // Add new SymFields.
+    Point pos{2 * 8, 9 * 8};
+    std::string format_string;
+    uint8_t word_length = encoder_def->word_length;
+    auto on_change_handler = [this](SymField&) {
+        generate_frame();
+    };
+
+    for (uint8_t i = 0; i < word_length; i++) {
+        auto symbol_type = encoder_def->word_format[i];
+        symfields_word.push_back(std::make_unique<SymField>(pos, 1));
+        auto& symfield = symfields_word.back();
+        symfield->on_change = on_change_handler;
+
+        switch (symbol_type) {
+            case 'A':
+                symfield->set_symbol_list(encoder_def->address_symbols);
+                format_string += 'A';
+                break;
+            case 'D':
+                symfield->set_symbol_list(encoder_def->data_symbols);
+                format_string += 'D';
+                break;
        }
+
+        add_child(symfield.get());
+        pos += Point{8, 0};
    }

    // Ugly :( Pad to erase
    format_string.append(24 - format_string.size(), ' ');
-
    text_format.set(format_string);

    generate_frame();
@@ -147,17 +154,18 @@ void EncodersConfigView::draw_waveform() {
 }

 void EncodersConfigView::generate_frame() {
-    size_t i = 0;
-
    frame_fragments.clear();

+    size_t i = 0;
    for (auto c : encoder_def->word_format) {
        if (c == 'S')
            frame_fragments += encoder_def->sync;
-        else if (!c)
+        else if (c == '\0')
            break;
-        else
-            frame_fragments += encoder_def->bit_format[symfield_word.get_sym(i++)];
+        else {
+            auto offset = symfields_word[i++]->get_offset(0);
+            frame_fragments += encoder_def->bit_format[offset];
+        }
    }

    draw_waveform();
@@ -200,13 +208,8 @@ void EncodersView::focus() {
 }

 EncodersView::~EncodersView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_ook", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // ghost signal c/m to the problem at the exit .
-    baseband::shutdown();                 // better this function after load_sram()
+    baseband::shutdown();
 }

 void EncodersView::update_progress() {
@@ -266,8 +269,9 @@ void EncodersView::start_tx(const bool scan) {
    repeat_index = 1;
    update_progress();

-    transmitter_model.set_sampling_rate(OOK_SAMPLERATE);
-    transmitter_model.set_baseband_bandwidth(1750000);
+    /* Setting TX LPF 1M75 in this TX OOK App  , We got same results as fw 1.7.4
+     * Looking max BW of this app, we tested , Selecting OOK type 145026 with CLK 455K and max DEV. 150k,
+     * and we got BW +-2Mhz , with that TX LPF 1M75, it is fine.*/
    transmitter_model.enable();

    baseband::set_ook_data(
@@ -290,19 +294,10 @@ EncodersView::EncodersView(
                  &progressbar,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_ook", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -27,6 +27,10 @@
 #include "encoders.hpp"
 #include "de_bruijn.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
+
+#include <memory>
+#include <vector>

 using namespace encoders;

@@ -112,10 +116,7 @@ class EncodersConfigView : public View {
         {"100", 100},
         {"1000", 1000}}};

-    SymField symfield_word{
-        {2 * 8, 9 * 8},
-        20,
-        SymField::SYMFIELD_DEF};
+    std::vector<std::unique_ptr<SymField>> symfields_word{};

    Text text_format{
        {2 * 8, 11 * 8, 24 * 8, 16},
@@ -183,9 +184,13 @@ class EncodersView : public View {
        SCAN
    };

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{
+        433920000 /* frequency */,
+        1750000 /* bandwidth */,
+        OOK_SAMPLERATE /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_ook", app_settings::Mode::TX};

    tx_modes tx_mode = IDLE;
    uint32_t repeat_index{0};
@@ -26,8 +26,11 @@

 #include <algorithm>
 #include "ui_fileman.hpp"
+#include "ui_playlist.hpp"
+#include "ui_remote.hpp"
 #include "ui_ss_viewer.hpp"
 #include "ui_text_editor.hpp"
+#include "ui_iq_trim.hpp"
 #include "string_format.hpp"
 #include "portapack.hpp"
 #include "event_m0.hpp"
@@ -35,6 +38,17 @@
 using namespace portapack;
 namespace fs = std::filesystem;

+namespace ui {
+static const fs::path txt_ext{u".TXT"};
+static const fs::path ppl_ext{u".PPL"};
+static const fs::path c8_ext{u".C8"};
+static const fs::path c16_ext{u".C16"};
+static const fs::path cxx_ext{u".C*"};
+static const fs::path png_ext{u".PNG"};
+static const fs::path bmp_ext{u".BMP"};
+static const fs::path rem_ext{u".REM"};
+}  // namespace ui
+
 namespace {
 using namespace ui;

@@ -47,25 +61,6 @@ std::string truncate(const fs::path& path, size_t max_length) {
    return ::truncate(path.string(), max_length);
 }

-// Case insensitive path equality on underlying "native" string.
-bool iequal(
-    const fs::path& lhs,
-    const fs::path& rhs) {
-    const auto& lhs_str = lhs.native();
-    const auto& rhs_str = rhs.native();
-
-    // NB: Not correct for Unicode/locales.
-    if (lhs_str.length() == rhs_str.length()) {
-        for (size_t i = 0; i < lhs_str.length(); ++i)
-            if (towupper(lhs_str[i]) != towupper(rhs_str[i]))
-                return false;
-
-        return true;
-    }
-
-    return false;
-}
-
 // Inserts the entry into the entry list sorted directories first then by file name.
 void insert_sorted(std::vector<fileman_entry>& entries, fileman_entry&& entry) {
    auto it = std::lower_bound(
@@ -86,19 +81,17 @@ void insert_sorted(std::vector<fileman_entry>& entries, fileman_entry&& entry) {
 fs::path get_partner_file(fs::path path) {
    if (fs::is_directory(path))
        return {};
-
-    const fs::path txt_path{u".TXT"};
-    const fs::path c16_path{u".C16"};
    auto ext = path.extension();

-    if (iequal(ext, txt_path))
-        ext = c16_path;
-    else if (iequal(ext, c16_path))
-        ext = txt_path;
-    else
+    if (is_cxx_capture_file(path))
+        path.replace_extension(txt_ext);
+    else if (path_iequal(ext, txt_ext)) {
+        path.replace_extension(c8_ext);
+        if (!fs::file_exists(path))
+            path.replace_extension(c16_ext);
+    } else
        return {};

-    path.replace_extension(ext);
    return fs::file_exists(path) && !fs::is_directory(path) ? path : fs::path{};
 }

@@ -116,14 +109,17 @@ bool partner_file_prompt(
    if (partner.empty())
        return false;

-    nav.push_under_current<ModalMessageView>(
-        "Partner File",
-        partner.filename().string() + "\n" + action_name + " this file too?",
-        YESNO,
-        [&nav, partner, on_partner_action](bool choice) {
-            if (on_partner_action)
-                on_partner_action(partner, choice);
-        });
+    // Display the continuation UI once the current has been popped.
+    nav.set_on_pop([&nav, partner, action_name, on_partner_action] {
+        nav.display_modal(
+            "Partner File",
+            partner.filename().string() + "\n" + action_name + " this file too?",
+            YESNO,
+            [&nav, partner, on_partner_action](bool choice) {
+                if (on_partner_action)
+                    on_partner_action(partner, choice);
+            });
+    });

    return true;
 }
@@ -154,16 +150,17 @@ void FileManBaseView::load_directory_contents(const fs::path& dir_path) {
    current_path = dir_path;
    entry_list.clear();
    auto filtering = !extension_filter.empty();
+    bool cxx_file = path_iequal(cxx_ext, extension_filter);

    text_current.set(dir_path.empty() ? "(sd root)" : truncate(dir_path, 24));

    for (const auto& entry : fs::directory_iterator(dir_path, u"*")) {
        // Hide files starting with '.' (hidden / tmp).
-        if (is_hidden_file(entry.path()))
+        if (!show_hidden_files && is_hidden_file(entry.path()))
            continue;

        if (fs::is_regular_file(entry.status())) {
-            if (!filtering || iequal(entry.path().extension(), extension_filter))
+            if (!filtering || path_iequal(entry.path().extension(), extension_filter) || (cxx_file && is_cxx_capture_file(entry.path())))
                insert_sorted(entry_list, {entry.path(), (uint32_t)entry.size(), false});
        } else if (fs::is_directory(entry.status())) {
            insert_sorted(entry_list, {entry.path(), 0, true});
@@ -194,11 +191,10 @@ FileManBaseView::FileManBaseView(
      extension_filter{filter} {
    add_children({&labels,
                  &text_current,
-                  &text_info,
                  &button_exit});

-    button_exit.on_select = [this, &nav](Button&) {
-        nav.pop();
+    button_exit.on_select = [this](Button&) {
+        nav_.pop();
    };

    if (!sdcIsCardInserted(&SDCD1)) {
@@ -259,8 +255,13 @@ void FileManBaseView::refresh_list() {
        auto entry_name = truncate(entry.path, 20);

        if (entry.is_directory) {
+            auto size_str =
+                (entry.path == parent_dir_path)
+                    ? ""
+                    : to_string_dec_uint(file_count(current_path / entry.path));
+
            menu_view.add_item(
-                {entry_name,
+                {entry_name + std::string(21 - entry_name.length(), ' ') + size_str,
                 ui::Color::yellow(),
                 &bitmap_icon_dir,
                 [this](KeyEvent key) {
@@ -287,7 +288,6 @@ void FileManBaseView::refresh_list() {
            break;
    }

-    text_info.set(menu_view.item_count() >= max_items_shown ? "Too many files!" : "");
    menu_view.set_highlighted(prev_highlight);
 }

@@ -301,7 +301,7 @@ const FileManBaseView::file_assoc_t& FileManBaseView::get_assoc(
    size_t index = 0;

    for (; index < file_types.size() - 1; ++index)
-        if (iequal(ext, file_types[index].extension))
+        if (path_iequal(ext, file_types[index].extension))
            return file_types[index];

    // Default to last entry in the list.
@@ -329,9 +329,9 @@ FileLoadView::FileLoadView(
        if (get_selected_entry().is_directory) {
            push_dir(get_selected_entry().path);
        } else {
-            nav_.pop();
            if (on_changed)
                on_changed(get_selected_full_path());
+            nav_.pop();
        }
    };
 }
@@ -351,7 +351,6 @@ FileSaveView::FileSaveView(
        file_{ file }
 {
        add_children({
-                &labels,
                &text_path,
                &button_edit_path,
                &text_name,
@@ -412,11 +411,17 @@ void FileManagerView::refresh_widgets(const bool v) {
    set_dirty();
 }

-void FileManagerView::on_rename() {
+void FileManagerView::on_rename(std::string_view hint) {
    auto& entry = get_selected_entry();
-    name_buffer = entry.path.filename().string();
-    uint32_t cursor_pos = (uint32_t)name_buffer.length();

+    // Append the hint to the filename stem as a rename suggestion.
+    name_buffer = entry.path.stem().string();
+    if (!hint.empty())
+        name_buffer += "_" + std::string{hint};
+    name_buffer += entry.path.extension().string();
+
+    // Set the rename cursor to before the extension to make renaming simpler.
+    uint32_t cursor_pos = (uint32_t)name_buffer.length();
    if (auto pos = name_buffer.find_last_of(".");
        pos != name_buffer.npos && !entry.is_directory)
        cursor_pos = pos;
@@ -443,6 +448,11 @@ void FileManagerView::on_rename() {
 }

 void FileManagerView::on_delete() {
+    if (is_directory(get_selected_full_path()) && !is_empty_directory(get_selected_full_path())) {
+        nav_.display_modal("Delete", "Directory not empty!");
+        return;
+    }
+
    auto name = get_selected_entry().path.filename().string();
    nav_.push<ModalMessageView>(
        "Delete", "Delete " + name + "\nAre you sure?", YESNO,
@@ -507,12 +517,23 @@ bool FileManagerView::handle_file_open() {
    auto path = get_selected_full_path();
    auto ext = path.extension();

-    if (iequal(u".TXT", ext) || iequal(u".PPL", ext)) {
+    if (path_iequal(txt_ext, ext)) {
        nav_.push<TextEditorView>(path);
        return true;
-    } else if (iequal(u".PNG", ext)) {
+    } else if (is_cxx_capture_file(path) || path_iequal(ppl_ext, ext)) {
+        // TODO: Enough memory to push?
+        nav_.push<PlaylistView>(path);
+        return true;
+    } else if (path_iequal(png_ext, ext)) {
        nav_.push<ScreenshotViewer>(path);
        return true;
+    } else if (path_iequal(bmp_ext, ext)) {
+        nav_.push<SplashViewer>(path);
+        reload_current();
+        return true;
+    } else if (path_iequal(rem_ext, ext)) {
+        nav_.push<RemoteView>(path);
+        return true;
    }

    return false;
@@ -536,7 +557,6 @@ FileManagerView::FileManagerView(

    add_children({
        &menu_view,
-        &labels,
        &text_date,
        &button_rename,
        &button_delete,
@@ -546,13 +566,22 @@ FileManagerView::FileManagerView(
        &button_new_dir,
        &button_new_file,
        &button_open_notepad,
+        &button_rename_timestamp,
+        &button_open_iq_trim,
+        &button_show_hidden_files,
    });

    menu_view.on_highlight = [this]() {
-        if (selected_is_valid())
-            text_date.set(to_string_FAT_timestamp(file_created_date(get_selected_full_path())));
-        else
-            text_date.set("");
+        if (menu_view.highlighted_index() >= max_items_shown - 1) {
+            text_date.set_style(&Styles::red);
+            text_date.set("Too many files!");
+        } else {
+            text_date.set_style(&Styles::grey);
+            if (selected_is_valid())
+                text_date.set((is_directory(get_selected_full_path()) ? "Created " : "Modified ") + to_string_FAT_timestamp(file_created_date(get_selected_full_path())));
+            else
+                text_date.set("");
+        }
    };

    refresh_list();
@@ -569,7 +598,7 @@ FileManagerView::FileManagerView(

    button_rename.on_select = [this]() {
        if (selected_is_valid())
-            on_rename();
+            on_rename("");
    };

    button_delete.on_select = [this]() {
@@ -611,10 +640,31 @@ FileManagerView::FileManagerView(
    button_open_notepad.on_select = [this]() {
        if (selected_is_valid() && !get_selected_entry().is_directory) {
            auto path = get_selected_full_path();
-            nav_.replace<TextEditorView>(path);
+            nav_.push<TextEditorView>(path);
        } else
            nav_.display_modal("Open in Notepad", "Can't open that in Notepad.");
    };
+
+    button_rename_timestamp.on_select = [this]() {
+        if (selected_is_valid() && !get_selected_entry().is_directory) {
+            on_rename(::truncate(to_string_timestamp(rtc_time::now()), 8));
+        } else
+            nav_.display_modal("Timestamp Rename", "Can't rename that.");
+    };
+
+    button_open_iq_trim.on_select = [this]() {
+        auto path = get_selected_full_path();
+        if (selected_is_valid() && !get_selected_entry().is_directory && is_cxx_capture_file(path)) {
+            nav_.push<IQTrimView>(path);
+        } else
+            nav_.display_modal("IQ Trim", "Not a capture file.");
+    };
+
+    button_show_hidden_files.on_select = [this]() {
+        show_hidden_files = !show_hidden_files;
+        button_show_hidden_files.set_color(show_hidden_files ? Color::green() : Color::dark_grey());
+        reload_current();
+    };
 }

 }  // namespace ui
@@ -77,7 +77,8 @@ class FileManBaseView : public View {
        {u".C8", &bitmap_icon_file_iq, ui::Color::dark_cyan()},
        {u".C16", &bitmap_icon_file_iq, ui::Color::dark_cyan()},
        {u".WAV", &bitmap_icon_file_wav, ui::Color::dark_magenta()},
-        {u".PPL", &bitmap_icon_file_iq, ui::Color::white()},  // PPL is the file extension for playlist app
+        {u".PPL", &bitmap_icon_file_iq, ui::Color::white()},  // Playlist/Replay
+        {u".REM", &bitmap_icon_remote, ui::Color::orange()},  // Remote
        {u"", &bitmap_icon_file, ui::Color::light_grey()}     // NB: Must be last.
    };

@@ -103,6 +104,8 @@ class FileManBaseView : public View {
    std::vector<fileman_entry> entry_list{};
    std::vector<uint32_t> saved_index_stack{};

+    bool show_hidden_files{false};
+
    Labels labels{
        {{0, 0}, "Path:", Color::light_grey()}};

@@ -115,11 +118,6 @@ class FileManBaseView : public View {
        {0, 2 * 8, 240, 26 * 8},
        true};

-    // HACK: for item count limit.
-    Text text_info{
-        {1 * 8, 35 * 8, 15 * 8, 16},
-        ""};
-
    Button button_exit{
        {22 * 8, 34 * 8, 8 * 8, 32},
        "Exit"};
@@ -207,7 +205,7 @@ class FileManagerView : public FileManBaseView {
    ClipboardMode clipboard_mode{ClipboardMode::None};

    void refresh_widgets(const bool v);
-    void on_rename();
+    void on_rename(std::string_view hint);
    void on_delete();
    void on_paste();
    void on_new_dir();
@@ -218,11 +216,8 @@ class FileManagerView : public FileManBaseView {
    // True if the selected entry is a real file item.
    bool selected_is_valid() const;

-    Labels labels{
-        {{0, 26 * 8}, "Created ", Color::light_grey()}};
-
    Text text_date{
-        {8 * 8, 26 * 8, 19 * 8, 16},
+        {0 * 8, 26 * 8, 28 * 8, 16},
        ""};

    NewButton button_rename{
@@ -272,6 +267,25 @@ class FileManagerView : public FileManBaseView {
        {},
        &bitmap_icon_notepad,
        Color::orange()};
+
+    NewButton button_rename_timestamp{
+        {4 * 8, 34 * 8, 4 * 8, 32},
+        {},
+        &bitmap_icon_options_datetime,
+        Color::orange(),
+        /*vcenter*/ true};
+
+    NewButton button_open_iq_trim{
+        {9 * 8, 34 * 8, 4 * 8, 32},
+        {},
+        &bitmap_icon_trim,
+        Color::orange()};
+
+    NewButton button_show_hidden_files{
+        {13 * 8, 34 * 8, 4 * 8, 32},
+        {},
+        &bitmap_icon_hide,
+        Color::dark_grey()};
 };

 } /* namespace ui */
@@ -25,6 +25,8 @@

 namespace ui {

+static const char16_t* firmware_folder = u"/FIRMWARE";
+
 Thread* FlashUtilityView::thread{nullptr};
 static constexpr size_t max_filename_length = 26;

@@ -35,7 +37,9 @@ FlashUtilityView::FlashUtilityView(NavigationView& nav)

    menu_view.set_parent_rect({0, 3 * 8, 240, 33 * 8});

-    for (const auto& entry : std::filesystem::directory_iterator(u"FIRMWARE", u"*.bin")) {
+    ensure_directory(firmware_folder);
+
+    for (const auto& entry : std::filesystem::directory_iterator(firmware_folder, u"*.bin")) {
        auto filename = entry.path().filename();
        auto path = entry.path().native();

@@ -40,7 +40,7 @@ class FlashUtilityView : public View {

    void focus() override;

-    std::string title() const override { return "FlashUtility"; };  // Removed the space because the title and speaker icon overlapped.
+    std::string title() const override { return "Flash Utility"; };

   private:
    NavigationView& nav_;
@@ -1,6 +1,7 @@
 /*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -22,281 +23,450 @@

 #include "ui_freqman.hpp"

-#include "portapack.hpp"
+#include "binder.hpp"
 #include "event_m0.hpp"
+#include "portapack.hpp"
+#include "rtc_time.hpp"
+#include "tone_key.hpp"
+#include "ui_receiver.hpp"
+#include "ui_styles.hpp"
+#include "utility.hpp"
+
+#include <memory>

 using namespace portapack;
+using namespace ui;
+namespace fs = std::filesystem;
+
+// TODO: Clean up after moving to better lookup tables.
+using options_t = OptionsField::options_t;
+extern options_t freqman_modulations;
+extern options_t freqman_bandwidths[4];
+extern options_t freqman_steps;
+extern options_t freqman_steps_short;
+
+/* Set options. */
+void freqman_set_modulation_option(OptionsField& option) {
+    option.set_options(freqman_modulations);
+}
+
+void freqman_set_bandwidth_option(freqman_index_t modulation, OptionsField& option) {
+    if (is_valid(modulation))
+        option.set_options(freqman_bandwidths[modulation]);
+}
+
+void freqman_set_step_option(OptionsField& option) {
+    option.set_options(freqman_steps);
+}
+
+void freqman_set_step_option_short(OptionsField& option) {
+    option.set_options(freqman_steps_short);
+}

 namespace ui {

-static int32_t current_category_id = 0;
+/* FreqManBaseView ***************************************/
+
+size_t FreqManBaseView::current_category_index = 0;

 FreqManBaseView::FreqManBaseView(
    NavigationView& nav)
    : nav_(nav) {
-    add_children({&options_category,
-                  &label_category,
-                  &button_exit});
+    add_children(
+        {&label_category,
+         &options_category,
+         &button_exit});

-    // initialize
-    refresh_list();
-    options_category.on_change = [this](size_t category_id, int32_t) {
-        change_category(category_id);
+    options_category.on_change = [this](size_t new_index, int32_t) {
+        change_category(new_index);
    };
-    options_category.set_selected_index(current_category_id);

    button_exit.on_select = [this, &nav](Button&) {
        nav.pop();
    };
+
+    refresh_categories();
 };

 void FreqManBaseView::focus() {
    button_exit.focus();

+    // TODO: Shouldn't be on focus.
    if (error_ == ERROR_ACCESS) {
-        nav_.display_modal("Error", "File acces error", ABORT, nullptr);
+        nav_.display_modal("Error", "File access error", ABORT);
    } else if (error_ == ERROR_NOFILES) {
-        nav_.display_modal("Error", "No database files\nin /freqman", ABORT, nullptr);
+        nav_.display_modal("Error", "No database files\nin /FREQMAN", ABORT);
    } else {
        options_category.focus();
    }
 }

-void FreqManBaseView::get_freqman_files() {
-    std::vector<std::string>().swap(file_list);
+void FreqManBaseView::change_category(size_t new_index) {
+    if (categories().empty())
+        return;

-    auto files = scan_root_files(u"FREQMAN", u"*.TXT");
-
-    for (auto file : files) {
-        std::string file_name = file.stem().string();
-        // don't propose tmp / hidden files in freqman's list
-        if (file_name.length() && file_name[0] != '.') {
-            file_list.emplace_back(file_name);
-        }
-    }
-};
-
-void FreqManBaseView::change_category(int32_t category_id) {
-    current_category_id = category_id;
-
-    if (file_list.empty()) return;
-
-    std::vector<freqman_entry>().swap(database);
-
-    if (!load_freqman_file(file_list[categories[category_id].second], database)) {
+    current_category_index = new_index;
+    if (!db_.open(get_freqman_path(current_category()))) {
        error_ = ERROR_ACCESS;
    }
-    menu_view.set_db(database);
-    text_empty.hidden(!database.empty());
-    menu_view.set_dirty();
-    set_dirty();
+
+    freqlist_view.set_db(db_);
 }

-void FreqManBaseView::refresh_list() {
-    categories.clear();
-    get_freqman_files();
+void FreqManBaseView::refresh_categories() {
+    OptionsField::options_t new_categories;

-    for (size_t n = 0; n < file_list.size(); n++)
-        categories.emplace_back(std::make_pair(file_list[n].substr(0, 14), n));
+    scan_root_files(
+        freqman_dir, u"*.TXT", [&new_categories](const fs::path& path) {
+            // Skip temp/hidden files.
+            if (path.empty() || path.native()[0] == u'.')
+                return;

-    // Alphabetical sort
-    std::sort(categories.begin(), categories.end(), [](auto& left, auto& right) {
+            // The UI layer will truncate long file names when displaying.
+            new_categories.emplace_back(path.stem().string(), new_categories.size());
+        });
+
+    // Alphabetically sort the categories.
+    std::sort(new_categories.begin(), new_categories.end(), [](auto& left, auto& right) {
        return left.first < right.first;
    });

-    options_category.set_options(categories);
-    if ((unsigned)current_category_id >= categories.size())
-        current_category_id = categories.size() - 1;
+    // Preserve last selection; ensure in range.
+    current_category_index = clip(current_category_index, 0u, new_categories.size());
+    auto saved_index = current_category_index;
+    options_category.set_options(std::move(new_categories));
+    options_category.set_selected_index(saved_index);
 }

-void FrequencySaveView::save_current_file() {
-    save_freqman_file(file_list[categories[current_category_id].second], database);
-    nav_.pop();
+void FreqManBaseView::refresh_list(int delta_selected) {
+    // Update the index and ensures in bounds.
+    freqlist_view.set_index(freqlist_view.get_index() + delta_selected);
+    freqlist_view.set_dirty();
 }

-void FrequencySaveView::on_save_name() {
-    text_prompt(nav_, desc_buffer, 28, [this](std::string& buffer) {
-        database.push_back({value_, 0, buffer, SINGLE});
-        save_current_file();
-    });
-}
-
-void FrequencySaveView::on_save_timestamp() {
-    database.push_back({value_, 0, live_timestamp.string(), SINGLE});
-    save_current_file();
-}
+/* FrequencySaveView *************************************/

 FrequencySaveView::FrequencySaveView(
    NavigationView& nav,
    const rf::Frequency value)
-    : FreqManBaseView(nav),
-      value_(value) {
-    desc_buffer.reserve(28);
+    : FreqManBaseView(nav) {
+    add_children(
+        {&labels,
+         &big_display,
+         &button_save,
+         &field_description});

-    // Todo: add back ?
-    /*for (size_t n = 0; n < database.size(); n++) {
-      if (database[n].value == value_) {
-      error_ = ERROR_DUPLICATE;
-      break;
-      }
-      }*/
+    entry_.type = freqman_type::Single;
+    entry_.frequency_a = value;
+    entry_.description = to_string_timestamp(rtc_time::now());

-    add_children({&labels,
-                  &big_display,
-                  &button_save_name,
-                  &button_save_timestamp,
-                  &live_timestamp});
+    bind(field_description, entry_.description, nav);

-    big_display.set(value);
-
-    button_save_name.on_select = [this, &nav](Button&) {
-        on_save_name();
-    };
-    button_save_timestamp.on_select = [this, &nav](Button&) {
-        on_save_timestamp();
-    };
-
-    options_category.on_change = [this, value](size_t category_id, int32_t) {
-        change_category(category_id);
-        big_display.set(value);
+    button_save.on_select = [this, &nav](Button&) {
+        db_.insert_entry(db_.entry_count(), entry_);
+        nav_.pop();
    };
 }

-void FrequencyLoadView::refresh_widgets(const bool v) {
-    menu_view.hidden(v);
-    text_empty.hidden(!v);
-    // display.fill_rectangle(menu_view.screen_rect(), Color::black());
-    set_dirty();
+void FrequencySaveView::focus() {
+    refresh_ui();
+    FreqManBaseView::focus();
 }

+void FrequencySaveView::refresh_ui() {
+    big_display.set(entry_.frequency_a);
+}
+
+/* FrequencyLoadView *************************************/
+
 FrequencyLoadView::FrequencyLoadView(
    NavigationView& nav)
    : FreqManBaseView(nav) {
-    on_refresh_widgets = [this](bool v) {
-        refresh_widgets(v);
+    add_children({&freqlist_view});
+
+    // Resize to fill screen. +2 keeps text out of border.
+    freqlist_view.set_parent_rect({0, 3 * 8, screen_width, 15 * 16 + 2});
+
+    freqlist_view.on_select = [&nav, this](size_t index) {
+        auto entry = db_[index];
+        // TODO: Maybe return center of range if user choses a range when the app
+        // needs a unique frequency, instead of frequency_a?
+        auto has_range = entry.type == freqman_type::Range ||
+                         entry.type == freqman_type::HamRadio;
+
+        if (on_range_loaded && has_range)
+            on_range_loaded(entry.frequency_a, entry.frequency_b);
+        else if (on_frequency_loaded)
+            on_frequency_loaded(entry.frequency_a);
+
+        nav_.pop();  // NB: this will call dtor.
    };
+    freqlist_view.on_leave = [this]() {
+        button_exit.focus();
+    };
+}

-    add_children({&menu_view,
-                  &text_empty});
+/* FrequencyManagerView **********************************/

-    // Resize menu view to fill screen
-    menu_view.set_parent_rect({0, 3 * 8, 240, 30 * 8});
+void FrequencyManagerView::on_edit_entry() {
+    auto edit_view = nav_.push<FrequencyEditView>(current_entry());
+    edit_view->on_save = [this](const freqman_entry& entry) {
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
+    };
+}

-    menu_view.on_select = [&nav, this](FreqManUIList&) {
-        nav_.pop();
+void FrequencyManagerView::on_edit_freq() {
+    auto freq_edit_view = nav_.push<FrequencyKeypadView>(current_entry().frequency_a);
+    freq_edit_view->on_changed = [this](rf::Frequency f) {
+        auto entry = current_entry();
+        entry.frequency_a = f;
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
+    };
+}

-        auto& entry = database[menu_view.get_index()];
+void FrequencyManagerView::on_edit_desc() {
+    temp_buffer_ = current_entry().description;
+    text_prompt(nav_, temp_buffer_, desc_edit_max, [this](std::string& new_desc) {
+        auto entry = current_entry();
+        entry.description = std::move(new_desc);
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
+    });
+}

-        if (entry.type == RANGE) {
-            // User chose a frequency range entry
-            if (on_range_loaded)
-                on_range_loaded(entry.frequency_a, entry.frequency_b);
-            else if (on_frequency_loaded)
-                on_frequency_loaded(entry.frequency_a);
-            // TODO: Maybe return center of range if user choses a range when the app needs a unique frequency, instead of frequency_a ?
-        } else {
-            // User chose an unique frequency entry
-            if (on_frequency_loaded)
-                on_frequency_loaded(entry.frequency_a);
+void FrequencyManagerView::on_add_category() {
+    temp_buffer_.clear();
+    text_prompt(nav_, temp_buffer_, 20, [this](std::string& new_name) {
+        if (!new_name.empty()) {
+            create_freqman_file(new_name);
+            refresh_categories();
        }
+    });
+}
+
+void FrequencyManagerView::on_del_category() {
+    nav_.push<ModalMessageView>(
+        "Delete", "Delete " + current_category() + "\nAre you sure?", YESNO,
+        [this](bool choice) {
+            if (choice) {
+                db_.close();  // Ensure file is closed.
+                auto path = get_freqman_path(current_category());
+                delete_file(path);
+                refresh_categories();
+            }
+        });
+}
+
+void FrequencyManagerView::on_add_entry() {
+    freqman_entry entry{
+        .frequency_a = 100'000'000,
+        .description = std::string{"Entry "} + to_string_dec_uint(db_.entry_count()),
+        .type = freqman_type::Single,
    };
+
+    // Add will insert below the currently selected item.
+    db_.insert_entry(current_index() + 1, entry);
+    refresh_list(1);
 }

-void FrequencyManagerView::on_edit_freq(rf::Frequency f) {
-    database[menu_view.get_index()].frequency_a = f;
-    save_freqman_file(file_list[categories[current_category_id].second], database);
-    change_category(current_category_id);
-}
+void FrequencyManagerView::on_del_entry() {
+    if (db_.empty())
+        return;

-void FrequencyManagerView::on_edit_desc(NavigationView& nav) {
-    text_prompt(nav, desc_buffer, 28, [this](std::string& buffer) {
-        database[menu_view.get_index()].description = buffer;
-        save_freqman_file(file_list[categories[current_category_id].second], database);
-        change_category(current_category_id);
-    });
-}
-
-void FrequencyManagerView::on_new_category(NavigationView& nav) {
-    text_prompt(nav, desc_buffer, 12, [this](std::string& buffer) {
-        File freqman_file;
-        create_freqman_file(buffer, freqman_file);
-        refresh_list();
-        change_category(current_category_id);
-    });
-}
-
-void FrequencyManagerView::on_delete() {
-    if (database.empty()) {
-        delete_freqman_file(file_list[categories[current_category_id].second]);
-        refresh_list();
-    } else {
-        database.erase(database.begin() + menu_view.get_index());
-        save_freqman_file(file_list[categories[current_category_id].second], database);
-    }
-    change_category(current_category_id);
-}
-
-void FrequencyManagerView::refresh_widgets(const bool v) {
-    button_edit_freq.hidden(v);
-    button_edit_desc.hidden(v);
-    button_delete.hidden(v);
-    text_empty.hidden(!v);
-    menu_view.hidden(v);
-    menu_view.set_dirty();
-    labels.hidden(v);
-    // display.fill_rectangle(menu_view.screen_rect(), Color::black());
-    set_dirty();
-}
-
-FrequencyManagerView::~FrequencyManagerView() {
-    // save_freqman_file(file_list[categories[current_category_id].second], database);
+    nav_.push<ModalMessageView>(
+        "Delete", "Delete " + trim(pretty_string(current_entry(), 23)) + "\nAre you sure?", YESNO,
+        [this](bool choice) {
+            if (choice) {
+                db_.delete_entry(current_index());
+                refresh_list();
+            }
+        });
 }

 FrequencyManagerView::FrequencyManagerView(
    NavigationView& nav)
    : FreqManBaseView(nav) {
-    on_refresh_widgets = [this](bool v) {
-        refresh_widgets(v);
+    add_children(
+        {&freqlist_view,
+         &button_add_category,
+         &button_del_category,
+         &button_edit_entry,
+         &rect_padding,
+         &button_edit_freq,
+         &button_edit_desc,
+         &button_add_entry,
+         &button_del_entry});
+
+    freqlist_view.on_select = [this](size_t) {
+        button_edit_entry.focus();
+    };
+    // Allows for quickly exiting control.
+    freqlist_view.on_leave = [this]() {
+        button_edit_entry.focus();
    };

-    add_children({&labels,
-                  &button_new_category,
-                  &menu_view,
-                  &text_empty,
-                  &button_edit_freq,
-                  &button_edit_desc,
-                  &button_delete});
-
-    menu_view.on_select = [this](FreqManUIList&) {
-        button_edit_freq.focus();
+    button_add_category.on_select = [this]() {
+        on_add_category();
    };

-    button_new_category.on_select = [this, &nav](Button&) {
-        desc_buffer = "";
-        on_new_category(nav);
+    button_del_category.on_select = [this]() {
+        on_del_category();
    };

-    button_edit_freq.on_select = [this, &nav](Button&) {
-        if (database.empty()) {
-            database.push_back({0, 0, "", SINGLE});
-        }
-        auto new_view = nav.push<FrequencyKeypadView>(database[menu_view.get_index()].frequency_a);
-        new_view->on_changed = [this](rf::Frequency f) {
-            on_edit_freq(f);
-        };
+    button_edit_entry.on_select = [this](Button&) {
+        on_edit_entry();
    };

-    button_edit_desc.on_select = [this, &nav](Button&) {
-        if (database.empty()) {
-            database.push_back({0, 0, "", SINGLE});
-        }
-        desc_buffer = database[menu_view.get_index()].description;
-        on_edit_desc(nav);
+    button_edit_freq.on_select = [this](Button&) {
+        on_edit_freq();
    };

-    button_delete.on_select = [this, &nav](Button&) {
-        on_delete();
+    button_edit_desc.on_select = [this](Button&) {
+        on_edit_desc();
+    };
+
+    button_add_entry.on_select = [this]() {
+        on_add_entry();
+    };
+
+    button_del_entry.on_select = [this]() {
+        on_del_entry();
    };
 }

+/* FrequencyEditView *************************************/
+
+FrequencyEditView::FrequencyEditView(
+    NavigationView& nav,
+    freqman_entry entry)
+    : nav_{nav},
+      entry_{std::move(entry)} {
+    add_children({&labels,
+                  &field_type,
+                  &field_freq_a,
+                  &field_freq_b,
+                  &field_modulation,
+                  &field_bandwidth,
+                  &field_step,
+                  &field_tone,
+                  &field_description,
+                  &text_validation,
+                  &button_save,
+                  &button_cancel});
+
+    freqman_set_modulation_option(field_modulation);
+    populate_bandwidth_options();
+    populate_step_options();
+    populate_tone_options();
+
+    // Add the "invalid/unset" option. Kind of hacky, but...
+    field_modulation.options().insert(
+        field_modulation.options().begin(), {"None", -1});
+    field_step.options().insert(
+        field_step.options().begin(), {"None", -1});
+
+    bind(field_type, entry_.type, [this](auto) {
+        refresh_ui();
+    });
+
+    bind(field_freq_a, entry_.frequency_a, nav, [this](auto) {
+        refresh_ui();
+    });
+
+    bind(field_freq_b, entry_.frequency_b, nav, [this](auto) {
+        refresh_ui();
+    });
+
+    bind(field_modulation, entry_.modulation, [this](auto) {
+        populate_bandwidth_options();
+    });
+
+    bind(field_bandwidth, entry_.bandwidth);
+    bind(field_step, entry_.step);
+    bind(field_tone, entry_.tone);
+    bind(field_description, entry_.description, nav_);
+
+    button_save.on_select = [this](Button&) {
+        if (on_save)
+            on_save(std::move(entry_));
+        nav_.pop();
+    };
+
+    button_cancel.on_select = [this](Button&) {
+        nav_.pop();
+    };
+
+    refresh_ui();
+}
+
+void FrequencyEditView::focus() {
+    button_cancel.focus();
+}
+
+void FrequencyEditView::refresh_ui() {
+    // This needs to be called whenever a UI option is changed
+    // in a way that causes fields to be unused or would make the
+    // entry fail validation.
+
+    auto is_range = entry_.type == freqman_type::Range;
+    auto is_ham = entry_.type == freqman_type::HamRadio;
+    auto has_freq_b = is_range || is_ham;
+
+    field_freq_b.set_style(has_freq_b ? &Styles::white : &Styles::grey);
+    field_step.set_style(is_range ? &Styles::white : &Styles::grey);
+    field_tone.set_style(is_ham ? &Styles::white : &Styles::grey);
+
+    if (is_valid(entry_)) {
+        text_validation.set("Valid");
+        text_validation.set_style(&Styles::green);
+    } else {
+        text_validation.set("Error");
+        text_validation.set_style(&Styles::red);
+    }
+}
+
+// TODO: The following functions shouldn't be needed once
+// freqman_db lookup tables are complete.
+void FrequencyEditView::populate_bandwidth_options() {
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    if (entry_.modulation < std::size(freqman_bandwidths)) {
+        auto& bandwidths = freqman_bandwidths[entry_.modulation];
+        for (auto i = 0u; i < bandwidths.size(); ++i) {
+            auto& item = bandwidths[i];
+            options.push_back({item.first, (OptionsField::value_t)i});
+        }
+    }
+
+    field_bandwidth.set_options(std::move(options));
+}
+
+void FrequencyEditView::populate_step_options() {
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    for (auto i = 0u; i < freqman_steps.size(); ++i) {
+        auto& item = freqman_steps[i];
+        options.push_back({item.first, (OptionsField::value_t)i});
+    }
+
+    field_step.set_options(std::move(options));
+}
+
+void FrequencyEditView::populate_tone_options() {
+    using namespace tonekey;
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    for (auto i = 0u; i < tone_keys.size(); ++i) {
+        auto& item = tone_keys[i];
+        options.push_back({fx100_string(item.second), (OptionsField::value_t)i});
+    }
+
+    field_tone.set_options(std::move(options));
+}
+
 }  // namespace ui
@@ -1,6 +1,7 @@
 /*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -20,94 +21,93 @@
 * Boston, MA 02110-1301, USA.
 */

+#include "freqman.hpp"
+#include "freqman_db.hpp"
 #include "ui.hpp"
-#include "ui_widget.hpp"
-#include "ui_painter.hpp"
+#include "ui_freqlist.hpp"
 #include "ui_menu.hpp"
 #include "ui_navigation.hpp"
+#include "ui_painter.hpp"
 #include "ui_receiver.hpp"
 #include "ui_textentry.hpp"
-#include "freqman.hpp"
-#include "ui_freqlist.hpp"
+#include "ui_widget.hpp"

 namespace ui {

 class FreqManBaseView : public View {
   public:
-    FreqManBaseView(
-        NavigationView& nav);
+    FreqManBaseView(NavigationView& nav);

    void focus() override;

+    static constexpr size_t desc_edit_max = 0x80;
+
   protected:
-    using option_t = std::pair<std::string, int32_t>;
-    using options_t = std::vector<option_t>;
+    using options_t = OptionsField::options_t;

    NavigationView& nav_;
    freqman_error error_{NO_ERROR};
-    options_t categories{};
-    std::function<void(void)> on_select_frequency{nullptr};
-    std::function<void(bool)> on_refresh_widgets{nullptr};
+    std::function<void(void)> on_select_frequency{};

-    void get_freqman_files();
-    void change_category(int32_t category_id);
-    void refresh_list();
+    void change_category(size_t new_index);
+    /* Access the categories directly from the OptionsField.
+     * This avoids holding multiple copies of the file list. */
+    const options_t& categories() const { return options_category.options(); }
+    const auto& current_category() const { return options_category.selected_index_name(); }
+    auto current_index() const { return freqlist_view.get_index(); }
+    freqman_entry current_entry() const { return db_[current_index()]; }
+    void refresh_categories();
+    void refresh_list(int delta_selected = 0);

-    freqman_db database{};
-    std::vector<std::string> file_list{};
+    FreqmanDB db_{};

+    /* The top section (category) is 20px tall. */
    Labels label_category{
-        {{0, 4}, "Category:", Color::light_grey()}};
+        {{0, 2}, "Category:", Color::light_grey()}};

    OptionsField options_category{
-        {9 * 8, 4},
-        14,
+        {9 * 8, 2},
+        14 /* length */,
        {}};

-    FreqManUIList menu_view{
-        {0, 3 * 8, 240, 23 * 8}};
-
-    Text text_empty{
-        {7 * 8, 12 * 8, 16 * 8, 16},
-        "Empty category !",
-    };
+    FreqManUIList freqlist_view{
+        {0, 3 * 8, screen_width, 12 * 16 + 2 /* 2 Keeps text out of border. */}};

    Button button_exit{
-        {16 * 8, 34 * 8, 14 * 8, 4 * 8},
+        {15 * 8, 17 * 16, 15 * 8, 2 * 16},
        "Exit"};

-   private:
+   protected:
+    /* Static so selected category is persisted across UI instances. */
+    static size_t current_category_index;
 };

+// TODO: support for new category.
 class FrequencySaveView : public FreqManBaseView {
   public:
    FrequencySaveView(NavigationView& nav, const rf::Frequency value);
-
-    std::string title() const override { return "Save freq."; };
+    std::string title() const override { return "Save freq"; }
+    void focus() override;

   private:
-    std::string desc_buffer{};
-    rf::Frequency value_{};
+    freqman_entry entry_{};

-    void on_save_name();
-    void on_save_timestamp();
-    void save_current_file();
+    void refresh_ui();

    BigFrequency big_display{
-        {4, 2 * 16, 28 * 8, 32},
+        {0, 2 * 16, 28 * 8, 4 * 16},
        0};

    Labels labels{
-        {{1 * 8, 12 * 8}, "Save as:", Color::white()}};
+        {{0 * 8, 6 * 16}, "Description:", Color::white()}};

-    Button button_save_name{
-        {1 * 8, 17 * 8, 12 * 8, 48},
-        "Name (set)"};
-    Button button_save_timestamp{
-        {1 * 8, 25 * 8, 12 * 8, 48},
-        "Timestamp:"};
-    LiveDateTime live_timestamp{
-        {14 * 8, 27 * 8, 16 * 8, 16}};
+    TextField field_description{
+        {0 * 8, 7 * 16, 30 * 8, 1 * 16},
+        ""};
+
+    Button button_save{
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Save"};
 };

 class FrequencyLoadView : public FreqManBaseView {
@@ -116,46 +116,146 @@ class FrequencyLoadView : public FreqManBaseView {
    std::function<void(rf::Frequency, rf::Frequency)> on_range_loaded{};

    FrequencyLoadView(NavigationView& nav);
-
-    std::string title() const override { return "Load freq."; };
-
-   private:
-    void refresh_widgets(const bool v);
+    std::string title() const override { return "Load freq"; }
 };

 class FrequencyManagerView : public FreqManBaseView {
   public:
    FrequencyManagerView(NavigationView& nav);
-    ~FrequencyManagerView();
-
-    std::string title() const override { return "Freqman"; };
+    std::string title() const override { return "Freqman"; }

   private:
-    std::string desc_buffer{};
+    std::string temp_buffer_{};

-    void refresh_widgets(const bool v);
-    void on_edit_freq(rf::Frequency f);
-    void on_edit_desc(NavigationView& nav);
-    void on_new_category(NavigationView& nav);
-    void on_delete();
+    void on_edit_entry();
+    void on_edit_freq();
+    void on_edit_desc();
+    void on_add_category();
+    void on_del_category();
+    void on_add_entry();
+    void on_del_entry();

-    Labels labels{
-        {{4 * 8 + 4, 26 * 8}, "Edit:", Color::light_grey()}};
+    NewButton button_add_category{
+        {23 * 8, 0 * 16, 7 * 4, 20},
+        {},
+        &bitmap_icon_new_file,
+        Color::white(),
+        true};

-    Button button_new_category{
-        {23 * 8, 2, 7 * 8, 20},
-        "New"};
+    NewButton button_del_category{
+        {26 * 8 + 4, 0 * 16, 7 * 4, 20},
+        {},
+        &bitmap_icon_trash,
+        Color::red(),
+        true};
+
+    Button button_edit_entry{
+        {0 * 8, 14 * 16 - 4, 15 * 8, 1 * 16 + 4},
+        "Edit"};
+
+    Rectangle rect_padding{
+        {15 * 8, 14 * 16 - 4, 15 * 8, 1 * 16 + 4},
+        Color::grey()};

    Button button_edit_freq{
-        {0 * 8, 29 * 8, 14 * 8, 32},
+        {0 * 8, 15 * 16, 15 * 8, 2 * 16},
        "Frequency"};
+
    Button button_edit_desc{
-        {0 * 8, 34 * 8, 14 * 8, 32},
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
        "Description"};

-    Button button_delete{
-        {16 * 8, 29 * 8, 14 * 8, 32},
-        "Delete"};
+    NewButton button_add_entry{
+        {15 * 8, 15 * 16, 7 * 8 + 4, 2 * 16},
+        {},
+        &bitmap_icon_add,
+        Color::white(),
+        true};
+
+    NewButton button_del_entry{
+        {22 * 8 + 4, 15 * 16, 7 * 8 + 4, 2 * 16},
+        {},
+        &bitmap_icon_delete,
+        Color::red(),
+        true};
+};
+
+class FrequencyEditView : public View {
+   public:
+    std::function<void(const freqman_entry&)> on_save{};
+
+    FrequencyEditView(
+        NavigationView& nav,
+        freqman_entry entry);
+    std::string title() const override { return "Freqman Edit"; }
+
+    void focus() override;
+
+   private:
+    NavigationView& nav_;
+    freqman_entry entry_;
+    std::string temp_buffer_{};
+
+    void refresh_ui();
+    void populate_bandwidth_options();
+    void populate_step_options();
+    void populate_tone_options();
+
+    Labels labels{
+        {{5 * 8, 1 * 16}, "Edit Frequency Entry", Color::white()},
+        {{0 * 8, 3 * 16}, "Entry Type :", Color::light_grey()},
+        {{0 * 8, 4 * 16}, "Frequency A:", Color::light_grey()},
+        {{0 * 8, 5 * 16}, "Frequency B:", Color::light_grey()},
+        {{0 * 8, 6 * 16}, "Modulation :", Color::light_grey()},
+        {{0 * 8, 7 * 16}, "Bandwidth  :", Color::light_grey()},
+        {{0 * 8, 8 * 16}, "Step       :", Color::light_grey()},
+        {{0 * 8, 9 * 16}, "Tone Freq  :", Color::light_grey()},
+        {{0 * 8, 10 * 16}, "Description:", Color::light_grey()},
+    };
+
+    OptionsField field_type{
+        {13 * 8, 3 * 16},
+        8,
+        {
+            {"Single", 0},
+            {"Range", 1},
+            {"HamRadio", 2},
+            {"Raw", 3},
+        }};
+
+    FrequencyField field_freq_a{{13 * 8, 4 * 16}};
+
+    FrequencyField field_freq_b{{13 * 8, 5 * 16}};
+
+    OptionsField field_modulation{{13 * 8, 6 * 16}, 5, {}};
+
+    OptionsField field_bandwidth{{13 * 8, 7 * 16}, 7, {}};
+
+    OptionsField field_step{{13 * 8, 8 * 16}, 12, {}};
+
+    OptionsField field_tone{{13 * 8, 9 * 16}, 13, {}};
+
+    TextField field_description{
+        {13 * 8, 10 * 16, 17 * 8, 1 * 16},
+        {}};
+
+    Text text_validation{
+        {12 * 8, 12 * 16, 5 * 8, 1 * 16},
+        {}};
+
+    Button button_save{
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Save"};
+
+    Button button_cancel{
+        {15 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Cancel"};
 };

 } /* namespace ui */
+
+void freqman_set_bandwidth_option(freqman_index_t modulation, ui::OptionsField& option);
+void freqman_set_modulation_option(ui::OptionsField& option);
+void freqman_set_step_option(ui::OptionsField& option);
+void freqman_set_step_option_short(ui::OptionsField& option);
+void freqman_set_tone_option(ui::OptionsField& option);
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_fsk_rx.hpp"
+
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "string_format.hpp"
+#include "utility.hpp"
+
+#include "ui_freqman.hpp"
+
+using namespace portapack;
+namespace pmem = portapack::persistent_memory;
+
+void FskRxLogger::log_raw_data(const std::string& data, const uint32_t frequency) {
+    std::string entry = "Raw: F:" + to_string_dec_uint(frequency) + "Hz";
+
+    // // Raw hex dump of all the codewords
+    // for (size_t c = 0; c < 16; c++)
+    //     entry += to_string_hex(packet[c], 8) + " ";
+
+    log_file.write_entry(data + entry);
+}
+
+void FskRxLogger::log_decoded(Timestamp timestamp, const std::string& text) {
+    log_file.write_entry(timestamp, text);
+}
+
+namespace ui {
+//---------------------------------------------------------------------------------------------------------------
+//  Console View
+//---------------------------------------------------------------------------------------------------------------
+FskRxAppConsoleView::FskRxAppConsoleView(NavigationView& nav, Rect parent_rect)
+    : View(parent_rect), nav_{nav} {
+    add_child(&console);
+};
+
+void FskRxAppConsoleView::on_packet(uint32_t value, bool is_data) {
+    if (is_data) {
+        console.write(to_string_dec_uint(value) + " ");
+    }
+}
+
+void FskRxAppConsoleView::on_show() {
+    hidden(false);
+}
+
+void FskRxAppConsoleView::on_hide() {
+    hidden(true);
+}
+
+FskRxAppConsoleView::~FskRxAppConsoleView() {
+}
+
+//---------------------------------------------------------------------------------------------------------------
+//  Spectrum View
+//---------------------------------------------------------------------------------------------------------------
+FskRxAppView::FskRxAppView(NavigationView& nav, Rect parent_rect)
+    : View(parent_rect), nav_{nav} {
+    add_child(&waterfall);
+    hidden(true);
+}
+
+FskRxAppView::~FskRxAppView() {
+}
+
+void FskRxAppView::focus() {
+}
+
+void FskRxAppView::on_show() {
+    hidden(false);
+    waterfall.start();
+}
+
+void FskRxAppView::on_hide() {
+    hidden(true);
+    waterfall.stop();
+}
+
+//---------------------------------------------------------------------------------------------------------------
+//  Base View
+//---------------------------------------------------------------------------------------------------------------
+FskxRxMainView::FskxRxMainView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({&tab_view,
+                  &view_data,
+                  &view_stream,
+                  &labels,
+                  &rssi,
+                  &channel,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &field_frequency,
+                  &deviation_frequency,
+                  &record_view});
+
+    baseband::run_image(portapack::spi_flash::image_tag_fskrx);
+
+    // DEBUG
+    record_view.on_error = [&nav](std::string message) {
+        nav.display_modal("Error", message);
+    };
+
+    deviation_frequency.on_change = [this](rf::Frequency f) {
+        refresh_ui(f);
+    };
+
+    // Set initial sampling rate
+    /* Bandwidth of 2FSK is 2 * Deviation */
+    record_view.set_sampling_rate(initial_deviation * 2);
+
+    field_frequency.set_value(initial_target_frequency);
+    deviation_frequency.set_value(initial_deviation);
+
+    logger.append(LOG_ROOT_DIR "/FSKRX.TXT");
+
+    baseband::set_fsk(initial_deviation);
+
+    audio::output::start();
+    receiver_model.enable();
+}
+
+void FskxRxMainView::handle_decoded(Timestamp timestamp, const std::string& prefix) {
+    if (logging()) {
+        logger.log_decoded(timestamp, prefix);
+    }
+}
+
+void FskxRxMainView::refresh_ui(rf::Frequency deviationHz) {
+    /* Nyquist would imply a sample rate of 2x bandwidth, but because the ADC
+     * provides 2 values (I,Q), the sample_rate is equal to bandwidth here. */
+    /* Bandwidth of 2FSK is 2 * Deviation */
+    auto sample_rate = deviationHz * 2;
+
+    /* base_rate (bandwidth) is used for FFT calculation and display LCD, and also in recording writing SD Card rate. */
+    /* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz, when selected 1 Mhz BW ... */
+    /* ex. recording 500kHz BW to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card. */
+
+    if (!view_stream.hidden()) {
+        view_stream.waterfall.stop();
+    }
+
+    // record_view determines the correct oversampling to apply and returns the actual sample rate.
+    // NB: record_view is what actually updates proc_capture baseband settings.
+    auto actual_sample_rate = record_view.set_sampling_rate(sample_rate);
+
+    // Update the radio model with the actual sampling rate.
+    receiver_model.set_sampling_rate(actual_sample_rate);
+
+    // Get suitable anti-aliasing BPF bandwidth for MAX2837 given the actual sample rate.
+    auto anti_alias_filter_bandwidth = filter_bandwidth_for_sampling_rate(actual_sample_rate);
+    receiver_model.set_baseband_bandwidth(anti_alias_filter_bandwidth);
+
+    if (!view_stream.hidden()) {
+        view_stream.waterfall.start();
+    }
+}
+
+void FskxRxMainView::focus() {
+    field_frequency.focus();
+}
+
+void FskxRxMainView::set_parent_rect(const Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+
+    ui::Rect waterfall_rect{0, 0, new_parent_rect.width(), new_parent_rect.height() - header_height};
+    view_stream.waterfall.set_parent_rect(waterfall_rect);
+}
+
+FskxRxMainView::~FskxRxMainView() {
+    audio::output::stop();
+    receiver_model.disable();
+    baseband::shutdown();
+}
+} /* namespace ui */
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2018 Furrtek
+ * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_FSK_RX_H__
+#define __UI_FSK_RX_H__
+
+#include "ui_widget.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_receiver.hpp"
+#include "ui_record_view.hpp"
+#include "ui_rssi.hpp"
+#include "ui_spectrum.hpp"
+#include "ui_styles.hpp"
+#include "ui_tabview.hpp"
+
+#include "app_settings.hpp"
+#include "log_file.hpp"
+#include "radio_state.hpp"
+#include "pocsag_app.hpp"
+
+#include <functional>
+
+class FskRxLogger {
+   public:
+    Optional<File::Error> append(const std::string& filename) {
+        return log_file.append(filename);
+    }
+
+    void log_raw_data(const std::string& data, const uint32_t frequency);
+    void log_decoded(Timestamp timestamp, const std::string& text);
+
+   private:
+    LogFile log_file{};
+};
+
+namespace ui {
+class FskRxAppConsoleView : public View {
+   public:
+    FskRxAppConsoleView(NavigationView& nav, Rect parent_rec);
+    ~FskRxAppConsoleView();
+
+    std::string title() const override { return "FSK RX Data"; };
+
+    void on_packet(uint32_t value, bool is_data);
+
+    void on_show() override;
+    void on_hide() override;
+
+   private:
+    NavigationView& nav_;
+
+    Console console{
+        {0, 0, 240, 224}};
+};
+
+class FskRxAppView : public View {
+   public:
+    FskRxAppView(NavigationView& nav, Rect parent_rect);
+    ~FskRxAppView();
+
+    void focus() override;
+    void on_show() override;
+    void on_hide() override;
+
+    spectrum::WaterfallView waterfall{};
+
+    std::string title() const override { return "FSK RX Stream"; };
+
+   private:
+    NavigationView& nav_;
+    RxRadioState radio_state_{};
+};
+
+class FskxRxMainView : public View {
+   public:
+    FskxRxMainView(NavigationView& nav);
+    ~FskxRxMainView();
+
+    void focus() override;
+    void set_parent_rect(const Rect new_parent_rect) override;
+
+    std::string title() const override { return "FSK RX"; };
+
+   private:
+    static constexpr uint32_t initial_target_frequency = 902'075'000;
+    static constexpr ui::Dim header_height = (5 * 16);
+
+    uint32_t initial_deviation{3750};
+
+    bool logging() const { return false; };
+    bool logging_raw() const { return false; };
+
+    NavigationView& nav_;
+    Rect view_rect = {0, header_height, 240, 224};
+
+    FskRxAppView view_stream{nav_, view_rect};
+    FskRxAppConsoleView view_data{nav_, view_rect};
+
+    TabView tab_view{
+        {"Data", Color::yellow(), &view_data},
+        {"Stream", Color::cyan(), &view_stream}};
+
+    void refresh_ui(rf::Frequency f);
+    void on_packet(uint32_t value, bool is_data);
+    void handle_decoded(Timestamp timestamp, const std::string& prefix);
+
+    uint32_t last_address = 0;
+    FskRxLogger logger{};
+    uint16_t packet_count = 0;
+
+    RxFrequencyField field_frequency{
+        {0 * 8, 4 * 8},
+        nav_};
+
+    RFAmpField field_rf_amp{
+        {11 * 8, 2 * 16}};
+
+    LNAGainField field_lna{
+        {13 * 8, 2 * 16}};
+
+    VGAGainField field_vga{
+        {16 * 8, 2 * 16}};
+
+    RSSI rssi{
+        {19 * 8 - 4, 35, 6 * 8, 4}};
+
+    Channel channel{
+        {19 * 8 - 4, 40, 6 * 8, 4}};
+
+    Labels labels{
+        {{0 * 8, 3 * 16}, "Deviation:", Color::light_grey()},
+    };
+
+    FrequencyField deviation_frequency{
+        {10 * 8, 3 * 16},
+        {3750, 500000},
+    };
+
+    // DEBUG
+    RecordView record_view{
+        {0 * 8, 4 * 16, 30 * 8, 1 * 16},
+        u"FSKRX_????.C16",
+        u"FSKRX",
+        RecordView::FileType::RawS16,
+        16384,
+        3};
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::AFSKData,
+        [this](Message* const p) {
+            const auto message = static_cast<const AFSKDataMessage*>(p);
+            this->view_data.on_packet(message->value, message->is_data);
+        }};
+};
+
+} /* namespace ui */
+
+#endif /*__POCSAG_APP_H__*/
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_iq_trim.hpp"
+
+#include "complex.hpp"
+#include "portapack.hpp"
+#include "ui_fileman.hpp"
+
+using namespace portapack;
+namespace fs = std::filesystem;
+
+namespace ui {
+
+IQTrimView::IQTrimView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({
+        &labels,
+        &field_path,
+        &field_start,
+        &field_end,
+        &text_samples,
+        &text_max,
+        &field_cutoff,
+        &field_amplify,
+        &button_trim,
+    });
+
+    field_path.on_select = [this](TextField&) {
+        auto open_view = nav_.push<FileLoadView>(".C*");
+        open_view->push_dir(u"CAPTURES");
+        open_view->on_changed = [this](fs::path path) {
+            open_file(path);
+        };
+    };
+
+    text_samples.set_style(&Styles::light_grey);
+    text_max.set_style(&Styles::light_grey);
+
+    field_start.on_change = [this](int32_t v) {
+        if (field_end.value() < v)
+            field_end.set_value(v, false);
+        set_dirty();
+    };
+
+    field_end.on_change = [this](int32_t v) {
+        if (field_start.value() > v)
+            field_start.set_value(v, false);
+        set_dirty();
+    };
+
+    field_cutoff.set_value(7);  // 7% of max is a good default.
+    field_cutoff.on_change = [this](int32_t) {
+        compute_range();
+        refresh_ui();
+    };
+
+    field_amplify.set_value(1);  // 1X is default (no amplification)
+    field_amplify.on_change = [this](int32_t) {
+        refresh_ui();
+    };
+
+    button_trim.on_select = [this](Button&) {
+        if (trim_capture()) {
+            profile_capture();
+            compute_range();
+            refresh_ui();
+        }
+    };
+}
+
+IQTrimView::IQTrimView(NavigationView& nav, const fs::path& path)
+    : IQTrimView(nav) {
+    open_file(path);
+}
+
+void IQTrimView::open_file(const std::filesystem::path& path) {
+    path_ = std::move(path);
+    profile_capture();
+    compute_range();
+    refresh_ui();
+}
+
+void IQTrimView::paint(Painter& painter) {
+    if (info_) {
+        uint32_t power_cutoff = field_cutoff.value() * static_cast<uint64_t>(info_->max_power) / 100;
+
+        // Draw power buckets.
+        for (size_t i = 0; i < power_buckets_.size(); ++i) {
+            auto power = power_buckets_[i].power;
+            uint8_t amp = 0;
+
+            if (power > power_cutoff && info_->max_power > 0)
+                amp = (255ULL * power) / info_->max_power;
+
+            painter.draw_vline(
+                pos_lines + Point{(int)i, 0},
+                height_lines,
+                Color(amp, amp, amp));
+        }
+
+        // Draw trim range edges.
+        int start_x = screen_width * field_start.value() / info_->sample_count;
+        int end_x = screen_width * field_end.value() / info_->sample_count;
+
+        painter.draw_vline(
+            pos_lines + Point{start_x, 0},
+            height_lines,
+            Color::dark_green());
+        painter.draw_vline(
+            pos_lines + Point{end_x, 0},
+            height_lines,
+            Color::dark_red());
+    }
+}
+
+void IQTrimView::focus() {
+    field_path.focus();
+}
+
+void IQTrimView::refresh_ui() {
+    field_path.set_text(path_.filename().string());
+    text_samples.set(to_string_dec_uint(info_->sample_count));
+
+    // show max power after amplification applied
+    uint64_t power_amp = field_amplify.value() * field_amplify.value() * field_amplify.value() * field_amplify.value();
+    text_max.set(to_string_dec_uint(info_->max_power * power_amp));
+
+    // show max power in red if amplification is too high, causing clipping
+    uint32_t clipping_limit = (fs::capture_file_sample_size(path_) == sizeof(complex8_t)) ? 0x80 : 0x8000;
+    if ((field_amplify.value() * info_->max_iq) > clipping_limit)
+        text_max.set_style(&Styles::red);
+    else
+        text_max.set_style(&Styles::light_grey);
+
+    set_dirty();
+}
+
+void IQTrimView::update_range_controls(iq::TrimRange trim_range) {
+    auto max_range = info_ ? info_->sample_count : 0;
+    auto step = info_ ? info_->sample_count / screen_width : 0;
+
+    field_start.set_range(0, max_range);
+    field_start.set_step(step);
+    field_end.set_range(0, max_range);
+    field_end.set_step(step);
+
+    field_start.set_value(trim_range.start_sample, false);
+    field_end.set_value(trim_range.end_sample, false);
+}
+
+void IQTrimView::profile_capture() {
+    power_buckets_ = {};
+    iq::PowerBuckets buckets{
+        .p = power_buckets_.data(),
+        .size = power_buckets_.size()};
+
+    progress_ui.show_reading();
+    info_ = iq::profile_capture(path_, buckets);
+    progress_ui.clear();
+}
+
+void IQTrimView::compute_range() {
+    if (!info_)
+        return;
+
+    iq::PowerBuckets buckets{
+        .p = power_buckets_.data(),
+        .size = power_buckets_.size()};
+    auto trim_range = iq::compute_trim_range(*info_, buckets, field_cutoff.value());
+
+    update_range_controls(trim_range);
+}
+
+bool IQTrimView::trim_capture() {
+    if (!info_) {
+        nav_.display_modal("Error", "Open a file first.");
+        return false;
+    }
+
+    bool trimmed = false;
+    iq::TrimRange trim_range{
+        static_cast<uint32_t>(field_start.value()),
+        static_cast<uint32_t>(field_end.value()),
+        info_->sample_size};
+
+    if (trim_range.start_sample >= trim_range.end_sample) {
+        nav_.display_modal("Error", "Invalid trimming range.");
+        return false;
+    }
+
+    progress_ui.show_trimming();
+    trimmed = iq::trim_capture_with_range(path_, trim_range, progress_ui.get_callback(), field_amplify.value());
+    progress_ui.clear();
+
+    if (!trimmed)
+        nav_.display_modal("Error", "Trimming failed.");
+
+    return trimmed;
+}
+
+}  // namespace ui
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_IQ_TRIM_H__
+#define __UI_IQ_TRIM_H__
+
+#include "file.hpp"
+#include "iq_trim.hpp"
+#include "optional.hpp"
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_styles.hpp"
+#include "ui_widget.hpp"
+
+#include <array>
+
+namespace ui {
+
+/* Helper for drawing progress related to IQ trimming. */
+/* TODO: Ideally this would all be done on second thread. */
+class TrimProgressUI {
+   public:
+    void show_reading() {
+        clear();
+        p.draw_string({6 * 8, 5 * 16}, Styles::yellow, "Reading Capture...");
+    }
+
+    void show_trimming() {
+        clear();
+        p.draw_string({5 * 8, 5 * 16}, Styles::yellow, "Trimming Capture...");
+    }
+
+    void show_progress(uint8_t percent) {
+        auto width = percent * screen_width / 100;
+        p.draw_hline({0, 6 * 16 + 2}, width, Color::yellow());
+    }
+
+    void clear() {
+        p.fill_rectangle({0 * 8, 4 * 16, screen_width, 3 * 16}, Color::black());
+    }
+
+    auto get_callback() {
+        return [this](uint8_t percent) { show_progress(percent); };
+    }
+
+   private:
+    Painter p{};
+};
+
+class IQTrimView : public View {
+   public:
+    IQTrimView(NavigationView& nav);
+    IQTrimView(NavigationView& nav, const std::filesystem::path& path);
+
+    std::string title() const override { return "IQ Trim"; }
+    void paint(Painter& painter) override;
+    void focus() override;
+
+   private:
+    void open_file(const std::filesystem::path& path);
+
+    /* Update controls with latest values. */
+    void refresh_ui();
+
+    /* Update the start/end controls with trim range info. */
+    void update_range_controls(iq::TrimRange trim_range);
+
+    /* Collect capture info and samples to draw the UI. */
+    void profile_capture();
+
+    /* Determine the start and end buckets based on the cutoff. */
+    void compute_range();
+
+    /* Trims the capture file based on the settings. */
+    bool trim_capture();
+
+    NavigationView& nav_;
+
+    std::filesystem::path path_{};
+    Optional<iq::CaptureInfo> info_{};
+    std::array<iq::PowerBuckets::Bucket, screen_width> power_buckets_{};
+    TrimProgressUI progress_ui{};
+
+    Labels labels{
+        {{0 * 8, 0 * 16}, "Capture File:", Color::light_grey()},
+        {{0 * 8, 6 * 16}, "Start  :", Color::light_grey()},
+        {{0 * 8, 7 * 16}, "End    :", Color::light_grey()},
+        {{0 * 8, 8 * 16}, "Samples:", Color::light_grey()},
+        {{0 * 8, 9 * 16}, "Max Pwr:", Color::light_grey()},
+        {{0 * 8, 10 * 16}, "Cutoff :", Color::light_grey()},
+        {{12 * 8, 10 * 16}, "%", Color::light_grey()},
+        {{0 * 8, 12 * 16}, "Amplify:", Color::light_grey()},
+        {{10 * 8, 12 * 16}, "x", Color::light_grey()},
+    };
+
+    TextField field_path{
+        {0 * 8, 1 * 16, 30 * 8, 1 * 16},
+        "Open File..."};
+
+    Point pos_lines{0 * 8, 4 * 16};
+    Dim height_lines{2 * 16};
+
+    NumberField field_start{
+        {9 * 8, 6 * 16},
+        10,
+        {0, 0},
+        1,
+        ' '};
+
+    NumberField field_end{
+        {9 * 8, 7 * 16},
+        10,
+        {0, 0},
+        1,
+        ' '};
+
+    Text text_samples{
+        {9 * 8, 8 * 16, 10 * 8, 1 * 16},
+        "0"};
+
+    Text text_max{
+        {9 * 8, 9 * 16, 20 * 8, 1 * 16},
+        "0"};
+
+    NumberField field_cutoff{
+        {9 * 8, 10 * 16},
+        3,
+        {1, 100},
+        1,
+        ' '};
+
+    NumberField field_amplify{
+        {9 * 8, 12 * 16},
+        1,
+        {1, 9},
+        1,
+        ' '};
+
+    Button button_trim{
+        {20 * 8, 16 * 16, 8 * 8, 2 * 16},
+        "Trim"};
+};
+
+} /* namespace ui */
+
+#endif /*__UI_IQ_TRIM_H__*/
@@ -23,7 +23,6 @@
 #include "ui_keyfob.hpp"

 #include "baseband_api.hpp"
-#include "cpld_update.hpp"
 #include "string_format.hpp"

 using namespace portapack;
@@ -98,12 +97,12 @@ size_t KeyfobView::generate_frame() {
    uint64_t payload;

    // Symfield word to frame
-    payload = field_payload_a.value_hex_u64();
+    payload = field_payload_a.to_integer();
    for (size_t i = 0; i < 5; i++) {
        frame[4 - i] = payload & 0xFF;
        payload >>= 8;
    }
-    payload = field_payload_b.value_hex_u64();
+    payload = field_payload_b.to_integer();
    for (size_t i = 0; i < 5; i++) {
        frame[9 - i] = payload & 0xFF;
        payload >>= 8;
@@ -137,12 +136,8 @@ void KeyfobView::focus() {
 }

 KeyfobView::~KeyfobView() {
-    // save app settings
-    settings.save("tx_keyfob", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void KeyfobView::update_progress(const uint32_t progress) {
@@ -169,12 +164,12 @@ void KeyfobView::on_make_change(size_t index) {
 // DEBUG
 void KeyfobView::update_symfields() {
    for (size_t i = 0; i < 5; i++) {
-        field_payload_a.set_sym(i << 1, frame[i] >> 4);
-        field_payload_a.set_sym((i << 1) + 1, frame[i] & 0x0F);
+        field_payload_a.set_offset(i << 1, frame[i] >> 4);
+        field_payload_a.set_offset((i << 1) + 1, frame[i] & 0x0F);
    }
    for (size_t i = 0; i < 5; i++) {
-        field_payload_b.set_sym(i << 1, frame[5 + i] >> 4);
-        field_payload_b.set_sym((i << 1) + 1, frame[5 + i] & 0x0F);
+        field_payload_b.set_offset(i << 1, frame[5 + i] >> 4);
+        field_payload_b.set_offset((i << 1) + 1, frame[5 + i] & 0x0F);
    }
 }

@@ -190,8 +185,6 @@ void KeyfobView::start_tx() {

    size_t bitstream_length = generate_frame();

-    transmitter_model.set_sampling_rate(OOK_SAMPLERATE);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    baseband::set_ook_data(
@@ -216,13 +209,6 @@ KeyfobView::KeyfobView(
                  &progressbar,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_keyfob", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    frame[0] = 0x55;
    update_symfields();

@@ -236,12 +222,10 @@ KeyfobView::KeyfobView(

    options_make.set_selected_index(0);

-    transmitter_model.set_tuning_frequency(433920000);  // Fixed 433.92MHz
-
    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -24,6 +24,7 @@
 #include "ui_transmitter.hpp"
 #include "transmitter_model.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "encoders.hpp"

 using namespace encoders;
@@ -42,9 +43,13 @@ class KeyfobView : public View {
   private:
    NavigationView& nav_;

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{
+        433920000 /* frequency */,
+        1750000 /* bandwidth */,
+        OOK_SAMPLERATE /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_keyfob", app_settings::Mode::TX};

    // 1013210ns / bit
    static constexpr uint32_t subaru_samples_per_bit = (OOK_SAMPLERATE * 0.00101321);
@@ -94,11 +99,11 @@ class KeyfobView : public View {
    SymField field_payload_a{
        {2 * 8, 5 * 16},
        10,
-        SymField::SYMFIELD_HEX};
+        SymField::Type::Hex};
    SymField field_payload_b{
        {13 * 8, 5 * 16},
        10,
-        SymField::SYMFIELD_HEX};
+        SymField::Type::Hex};

    Text text_status{
        {2 * 8, 13 * 16, 128, 16},
@@ -23,9 +23,13 @@

 #include "ui_level.hpp"
 #include "ui_fileman.hpp"
+#include "ui_freqman.hpp"
+#include "baseband_api.hpp"
 #include "file.hpp"
+#include "oversample.hpp"

 using namespace portapack;
+using namespace tonekey;
 using portapack::memory::map::backup_ram;

 namespace ui {
@@ -35,13 +39,6 @@ void LevelView::focus() {
 }

 LevelView::~LevelView() {
-    // save app settings
-    app_settings.lna = field_lna.value();
-    app_settings.vga = field_vga.value();
-    app_settings.rx_amp = field_rf_amp.value();
-
-    settings.save("level", &app_settings);
-
    receiver_model.disable();
    baseband::shutdown();
 }
@@ -71,42 +68,31 @@ LevelView::LevelView(NavigationView& nav)
    change_mode(NFM_MODULATION);              // Start on AM
    field_mode.set_by_value(NFM_MODULATION);  // Reflect the mode into the manual selector

-    // HELPER: Pre-setting a manual range, based on stored frequency
-    freq = persistent_memory::tuned_frequency();
-    receiver_model.set_tuning_frequency(freq);
-    button_frequency.set_text("<" + to_string_short_freq(freq) + " MHz>");
-
-    // load auto common app settings
-    auto rc = settings.load("level", &app_settings);
-    if (rc == SETTINGS_OK) {
-        field_lna.set_value(app_settings.lna);
-        field_vga.set_value(app_settings.vga);
-        field_rf_amp.set_value(app_settings.rx_amp);
-        receiver_model.set_rf_amp(app_settings.rx_amp);
-    }
+    freq_ = receiver_model.target_frequency();
+    button_frequency.set_text("<" + to_string_short_freq(freq_) + " MHz>");

    button_frequency.on_select = [this, &nav](ButtonWithEncoder& button) {
-        auto new_view = nav_.push<FrequencyKeypadView>(freq);
+        auto new_view = nav_.push<FrequencyKeypadView>(freq_);
        new_view->on_changed = [this, &button](rf::Frequency f) {
-            freq = f;
-            receiver_model.set_tuning_frequency(f);  // Retune to actual freq
-            button_frequency.set_text("<" + to_string_short_freq(freq) + " MHz>");
+            freq_ = f;
+            receiver_model.set_target_frequency(f);  // Retune to actual freq
+            button_frequency.set_text("<" + to_string_short_freq(freq_) + " MHz>");
        };
    };

    button_frequency.on_change = [this]() {
        int64_t def_step = freqman_entry_get_step_value(step_mode.selected_index());
-        freq = freq + (button_frequency.get_encoder_delta() * def_step);
-        if (freq < 1) {
-            freq = 1;
+        freq_ = freq_ + (button_frequency.get_encoder_delta() * def_step);
+        if (freq_ < 1) {
+            freq_ = 1;
        }
-        if (freq > (MAX_UFREQ - def_step)) {
-            freq = MAX_UFREQ;
+        if (freq_ > (MAX_UFREQ - def_step)) {
+            freq_ = MAX_UFREQ;
        }
        button_frequency.set_encoder_delta(0);

-        receiver_model.set_tuning_frequency(freq);  // Retune to actual freq
-        button_frequency.set_text("<" + to_string_short_freq(freq) + " MHz>");
+        receiver_model.set_target_frequency(freq_);  // Retune to actual freq
+        button_frequency.set_text("<" + to_string_short_freq(freq_) + " MHz>");
    };

    field_mode.on_change = [this](size_t, OptionsField::value_t v) {
@@ -156,31 +142,24 @@ LevelView::LevelView(NavigationView& nav)
 }

 void LevelView::on_statistics_update(const ChannelStatistics& statistics) {
-    static int last_max_db = -1000;
-    static int last_min_rssi = -1000;
-    static int last_avg_rssi = -1000;
-    static int last_max_rssi = -1000;
+    static int16_t last_max_db = -1000;
+    static int16_t last_min_rssi = -1000;
+    static int16_t last_avg_rssi = -1000;
+    static int16_t last_max_rssi = -1000;

    rssi_graph.add_values(rssi.get_min(), rssi.get_avg(), rssi.get_max(), statistics.max_db);

-    bool refresh_db = false;
-    bool refresh_rssi = false;
-
+    // refresh db
    if (last_max_db != statistics.max_db) {
-        refresh_db = true;
-    }
-    if (last_min_rssi != rssi.get_min() || last_avg_rssi != rssi.get_avg() || last_max_rssi != rssi.get_max()) {
-        refresh_rssi = true;
-    }
-    if (refresh_db) {
        last_max_db = statistics.max_db;
        freq_stats_db.set("Power: " + to_string_dec_int(statistics.max_db) + " db");
    }
-    if (refresh_rssi) {
-        last_min_rssi = rssi.get_min();
-        last_avg_rssi = rssi.get_avg();
-        last_max_rssi = rssi.get_max();
-        freq_stats_rssi.set("RSSI: " + to_string_dec_int(rssi.get_min()) + "/" + to_string_dec_int(rssi.get_avg()) + "/" + to_string_dec_int(rssi.get_max()) + ",dt: " + to_string_dec_int(rssi.get_delta()));
+    // refresh rssi
+    if (last_min_rssi != rssi_graph.get_graph_min() || last_avg_rssi != rssi_graph.get_graph_avg() || last_max_rssi != rssi_graph.get_graph_max()) {
+        last_min_rssi = rssi_graph.get_graph_min();
+        last_avg_rssi = rssi_graph.get_graph_avg();
+        last_max_rssi = rssi_graph.get_graph_max();
+        freq_stats_rssi.set("RSSI: " + to_string_dec_int(last_min_rssi) + "/" + to_string_dec_int(last_avg_rssi) + "/" + to_string_dec_int(last_max_rssi) + ",dt: " + to_string_dec_int(rssi_graph.get_graph_delta()));
    }
 } /* on_statistic_updates */

@@ -190,74 +169,64 @@ size_t LevelView::change_mode(freqman_index_t new_mod) {
    switch (new_mod) {
        case AM_MODULATION:
            freqman_set_bandwidth_option(new_mod, field_bw);
-            // bw DSB (0) default
-            field_bw.set_by_value(0);
            baseband::run_image(portapack::spi_flash::image_tag_am_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);
            receiver_model.set_am_configuration(field_bw.selected_index_value());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_am_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(1750000);
+            // bw DSB (0) default
+            field_bw.set_by_value(0);
            text_ctcss.set("             ");
            break;
        case NFM_MODULATION:
            freqman_set_bandwidth_option(new_mod, field_bw);
-            // bw 16k (2) default
-            field_bw.set_by_value(2);
            baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
            receiver_model.set_nbfm_configuration(field_bw.selected_index_value());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_nbfm_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(1750000);
+            // bw 16k (2) default
+            field_bw.set_by_value(2);
            break;
        case WFM_MODULATION:
            freqman_set_bandwidth_option(new_mod, field_bw);
-            // bw 200k (0) only/default
-            field_bw.set_by_value(0);
            baseband::run_image(portapack::spi_flash::image_tag_wfm_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
            receiver_model.set_wfm_configuration(field_bw.selected_index_value());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_wfm_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(1750000);
+            // bw 200k (0) only/default
+            field_bw.set_by_value(0);
            text_ctcss.set("             ");
            break;
+        case SPEC_MODULATION:
+            freqman_set_bandwidth_option(new_mod, field_bw);
+            baseband::run_image(portapack::spi_flash::image_tag_capture);
+            receiver_model.set_modulation(ReceiverModel::Mode::Capture);
+            field_bw.on_change = [this](size_t, OptionsField::value_t sampling_rate) {
+                // Baseband needs to know the desired sampling and oversampling rates.
+                baseband::set_sample_rate(sampling_rate, get_oversample_rate(sampling_rate));
+
+                // The radio needs to know the effective sampling rate.
+                auto actual_sampling_rate = get_actual_sample_rate(sampling_rate);
+                receiver_model.set_sampling_rate(actual_sampling_rate);
+                receiver_model.set_baseband_bandwidth(filter_bandwidth_for_sampling_rate(actual_sampling_rate));
+            };
+            field_bw.set_by_value(0);
        default:
            break;
    }
+    if (new_mod != SPEC_MODULATION) {
+        // Reset receiver model to fix bug when going from SPEC to audio, the sound is distorted.
+        receiver_model.set_sampling_rate(3072000);
+        receiver_model.set_baseband_bandwidth(1750000);
+    }
+
    return step_mode.selected_index();
 }

 void LevelView::handle_coded_squelch(const uint32_t value) {
-    static int32_t last_idx = -1;
-
-    float diff, min_diff = value;
-    size_t min_idx{0};
-    size_t c;
-
-    if (field_mode.selected_index() != NFM_MODULATION) {
-        text_ctcss.set("             ");
-        return;
-    }
-
-    // Find nearest match
-    for (c = 0; c < tone_keys.size(); c++) {
-        diff = abs(((float)value / 100.0) - tone_keys[c].second);
-        if (diff < min_diff) {
-            min_idx = c;
-            min_diff = diff;
-        }
-    }
-
-    // Arbitrary confidence threshold
-    if (last_idx < 0 || (unsigned)last_idx != min_idx) {
-        last_idx = min_idx;
-        if (min_diff < 40)
-            text_ctcss.set("T: " + tone_keys[min_idx].first);
-        else
-            text_ctcss.set("             ");
-    }
+    if (field_mode.selected_index() == NFM_MODULATION)
+        text_ctcss.set(tone_key_string_by_value(value, text_ctcss.parent_rect().width() / 8));
+    else
+        text_ctcss.set("        ");
 }

 } /* namespace ui */
@@ -24,20 +24,21 @@
 #ifndef _UI_LEVEL
 #define _UI_LEVEL

-#include "ui.hpp"
-#include "receiver_model.hpp"
-#include "ui_receiver.hpp"
-#include "ui_styles.hpp"
-#include "freqman.hpp"
 #include "analog_audio_app.hpp"
-#include "audio.hpp"
-#include "ui_mictx.hpp"
-#include "portapack_persistent_memory.hpp"
-#include "baseband_api.hpp"
-#include "ui_spectrum.hpp"
-#include "string_format.hpp"
-#include "file.hpp"
 #include "app_settings.hpp"
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "file.hpp"
+#include "freqman_db.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "radio_state.hpp"
+#include "receiver_model.hpp"
+#include "string_format.hpp"
+#include "ui.hpp"
+#include "ui_mictx.hpp"
+#include "ui_receiver.hpp"
+#include "ui_spectrum.hpp"
+#include "ui_styles.hpp"

 namespace ui {

@@ -53,13 +54,17 @@ class LevelView : public View {
   private:
    NavigationView& nav_;

+    RxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "rx_level", app_settings::Mode::RX};
+
    size_t change_mode(freqman_index_t mod_type);
    void on_statistics_update(const ChannelStatistics& statistics);
    void set_display_freq(int64_t freq);

+    // TODO: needed?
    int32_t db{0};
-    long long int MAX_UFREQ = {7200000000};  // maximum usable freq
-    rf::Frequency freq = {0};
+    rf::Frequency freq_ = {0};

    Labels labels{
        {{0 * 8, 0 * 16}, "LNA:   VGA:   AMP:  VOL:     ", Color::light_grey()},
@@ -85,7 +90,7 @@ class LevelView : public View {

    OptionsField field_mode{
        {15 * 8, 1 * 16},
-        3,
+        4,
        {}};

    OptionsField step_mode{
@@ -104,11 +109,11 @@ class LevelView : public View {
            {"audio off", 0},
            {"audio on", 1}
            //{"tone on", 2},
-            //{"tone off", 2},
+            //{"tone off", 3},
        }};

    Text text_ctcss{
-        {22 * 8, 3 * 16 + 4, 14 * 8, 1 * 8},
+        {22 * 8, 3 * 16 + 4, 8 * 8, 1 * 8},
        ""};

    // RSSI: XX/XX/XXX,dt: XX
@@ -168,9 +173,6 @@ class LevelView : public View {
        [this](const Message* const p) {
            this->on_statistics_update(static_cast<const ChannelStatisticsMessage*>(p)->statistics);
        }};
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
 };

 } /* namespace ui */
@@ -22,12 +22,15 @@
 */

 #include "ui_looking_glass_app.hpp"
+#include "convert.hpp"
+#include "file_reader.hpp"
+#include "string_format.hpp"

 using namespace portapack;

 namespace ui {
 void GlassView::focus() {
-    button_marker.focus();
+    range_presets.focus();
 }

 GlassView::~GlassView() {
@@ -38,7 +41,7 @@ GlassView::~GlassView() {

 void GlassView::get_max_power(const ChannelSpectrum& spectrum, uint8_t bin, uint8_t& max_power) {
    if (mode == LOOKING_GLASS_SINGLEPASS) {
-        // analog audio app like view
+        // <20MHz spectrum mode
        if (bin < 120) {
            if (spectrum.db[SPEC_NB_BINS - 120 + bin] > max_power)
                max_power = spectrum.db[SPEC_NB_BINS - 120 + bin];
@@ -47,15 +50,13 @@ void GlassView::get_max_power(const ChannelSpectrum& spectrum, uint8_t bin, uint
                max_power = spectrum.db[bin - 120];
        }
    } else {
-        // view is made in multiple pass, use original bin picking
-        // FAST mode: center 12 bins are ignored in fast mode , (DC spike is blanked) leftmost and rightmost 2 bins are ignored
-        // SLOW mode: leftmost 'offset' bins are ignored
+        // FAST or SLOW mode
        if (bin < 120) {
-            if (spectrum.db[SPEC_NB_BINS - offset - 120 + bin] > max_power)
-                max_power = spectrum.db[SPEC_NB_BINS - offset - 120 + bin];
+            if (spectrum.db[134 + bin] > max_power)
+                max_power = spectrum.db[134 + bin];
        } else {
-            if (spectrum.db[offset + bin - 120] > max_power)
-                max_power = spectrum.db[offset + bin - 120];
+            if (spectrum.db[bin - 118] > max_power)
+                max_power = spectrum.db[bin - 118];
        }
    }
 }
@@ -66,32 +67,15 @@ rf::Frequency GlassView::get_freq_from_bin_pos(uint8_t pos) {
        // starting from the middle, minus 8 ignored bin on each side. Since pos is [-120,120] after the (pos - 120), it's divided by SCREEN_W(240)/2 => 120
        freq_at_pos = f_center_ini + ((pos - 120) * ((looking_glass_range - ((16 * looking_glass_range) / SPEC_NB_BINS)) / 2)) / (SCREEN_W / 2);
    } else
-        freq_at_pos = f_min - (offset * each_bin_size) + (pos * looking_glass_range) / SCREEN_W;
+        freq_at_pos = f_min + (2 * offset * each_bin_size) + (pos * looking_glass_range) / SCREEN_W;

    return freq_at_pos;
 }

 void GlassView::on_marker_change() {
    marker = get_freq_from_bin_pos(marker_pixel_index);
-    button_marker.set_text(to_string_short_freq(marker));
-    PlotMarker(marker_pixel_index);  // Refresh marker on screen
-}
-
-// Returns the next multiple of num that is a multiple of multiplier
-int64_t GlassView::next_mult_of(int64_t num, int64_t multiplier) {
-    return ((num / multiplier) + 1) * multiplier;
-}
-
-void GlassView::adjust_range(int64_t* f_min, int64_t* f_max, int64_t width) {
-    int64_t span = *f_max - *f_min;
-    int64_t num_intervals = span / width;
-    if (span % width != 0) {
-        num_intervals++;
-    }
-    int64_t new_span = num_intervals * width;
-    int64_t delta_span = (new_span - span) / 2;
-    *f_min -= delta_span;
-    *f_max += delta_span;
+    field_marker.set_text(to_string_short_freq(marker));
+    plot_marker(marker_pixel_index);  // Refresh marker on screen
 }

 void GlassView::retune() {
@@ -103,23 +87,13 @@ void GlassView::retune() {
    baseband::spectrum_streaming_start();  // Do the RX
 }

-void GlassView::on_lna_changed(int32_t v_db) {
-    receiver_model.set_lna(v_db);
-}
-
-void GlassView::on_vga_changed(int32_t v_db) {
-    receiver_model.set_vga(v_db);
-}
-
-void GlassView::reset_live_view(bool clear_screen) {
+void GlassView::reset_live_view() {
    max_freq_hold = 0;
    max_freq_power = -1000;
-    if (clear_screen) {
-        // only clear screen in peak mode
-        if (live_frequency_view == 2) {
-            display.fill_rectangle({{0, 108 + 16}, {SCREEN_W, 320 - (108 + 16)}}, {0, 0, 0});
-        }
-    }
+
+    // Clear screen in peak mode.
+    if (live_frequency_view == 2)
+        display.fill_rectangle({{0, 108 + 16}, {SCREEN_W, SCREEN_H - (108 + 16)}}, {0, 0, 0});
 }

 void GlassView::add_spectrum_pixel(uint8_t power) {
@@ -150,15 +124,15 @@ void GlassView::add_spectrum_pixel(uint8_t power) {
                uint8_t color_gradient = (point * 255) / 212;
                // clear if not in peak view
                if (live_frequency_view != 2) {
-                    display.fill_rectangle({{xpos, 108 + 16}, {1, 320 - point}}, {0, 0, 0});
+                    display.fill_rectangle({{xpos, 108 + 16}, {1, SCREEN_H - point}}, {0, 0, 0});
                }
-                display.fill_rectangle({{xpos, 320 - point}, {1, point}}, {color_gradient, 0, uint8_t(255 - color_gradient)});
+                display.fill_rectangle({{xpos, SCREEN_H - point}, {1, point}}, {color_gradient, 0, uint8_t(255 - color_gradient)});
            }
            if (last_max_freq != max_freq_hold) {
                last_max_freq = max_freq_hold;
                freq_stats.set("MAX HOLD: " + to_string_short_freq(max_freq_hold));
            }
-            PlotMarker(marker_pixel_index);
+            plot_marker(marker_pixel_index);
        } else {
            display.draw_pixels({{0, display.scroll(1)}, {SCREEN_W, 1}}, spectrum_row);  // new line at top, one less var, speedier
        }
@@ -166,39 +140,52 @@ void GlassView::add_spectrum_pixel(uint8_t power) {
    }
 }

+bool GlassView::process_bins(uint8_t* powerlevel) {
+    bins_hz_size += each_bin_size;          // add pixel to fulfilled bag of Hz
+    if (bins_hz_size >= marker_pixel_step)  // new pixel fullfilled
+    {
+        if (*powerlevel > min_color_power)
+            add_spectrum_pixel(*powerlevel);  // Pixel will represent max_power
+        else
+            add_spectrum_pixel(0);  // Filtered out, show black
+        *powerlevel = 0;
+
+        if (!pixel_index)  // Received indication that a waterfall line has been completed
+        {
+            bins_hz_size = 0;  // Since this is an entire pixel line, we don't carry "Pixels into next bin"
+            if (mode != LOOKING_GLASS_SINGLEPASS) {
+                f_center = f_center_ini;
+                retune();
+            } else
+                baseband::spectrum_streaming_start();
+            return true;  // signal a new line
+        }
+        bins_hz_size -= marker_pixel_step;  // reset bins size, but carrying the eventual excess Hz into next pixel
+    }
+    return false;
+}
+
 // Apparently, the spectrum object returns an array of SPEC_NB_BINS (256) bins
-// Each having the radio signal power for it's corresponding frequency slot
+// Each having the radio signal power for its corresponding frequency slot
 void GlassView::on_channel_spectrum(const ChannelSpectrum& spectrum) {
    baseband::spectrum_streaming_stop();
    // Convert bins of this spectrum slice into a representative max_power and when enough, into pixels
    // we actually need SCREEN_W (240) of those bins
-    for (bin = 0; bin < bin_length; bin++) {
+    for (uint8_t bin = 0; bin < bin_length; bin++) {
        get_max_power(spectrum, bin, max_power);
-        if (ignore_dc && bin == 119) {
-            bins_Hz_size += 12 * each_bin_size;  // add the ignored DC spike to "pixel fulfilled bag of Hz"
-        }
-        bins_Hz_size += each_bin_size;          // add this bin Hz count into the "pixel fulfilled bag of Hz"
-        if (bins_Hz_size >= marker_pixel_step)  // new pixel fullfilled
-        {
-            if (min_color_power < max_power)
-                add_spectrum_pixel(max_power);  // Pixel will represent max_power
-            else
-                add_spectrum_pixel(0);  // Filtered out, show black
-
-            max_power = 0;
-
-            if (!pixel_index)  // Received indication that a waterfall line has been completed
-            {
-                bins_Hz_size = 0;  // Since this is an entire pixel line, we don't carry "Pixels into next bin"
-                if (mode != LOOKING_GLASS_SINGLEPASS) {
-                    f_center = f_center_ini;
-                    retune();
-                } else
-                    baseband::spectrum_streaming_start();
-                return;  // signal a new line
+        // process dc spike if enable
+        if (bin == 119) {
+            uint8_t next_max_power = 0;
+            get_max_power(spectrum, bin + 1, next_max_power);
+            for (uint8_t it = 0; it < ignore_dc; it++) {
+                uint8_t med_max_power = (max_power + next_max_power) / 2;  // due to the way process_bins works we have to keep resetting the color
+                if (process_bins(&med_max_power) == true)
+                    return;  // new line signaled, return
            }
-            bins_Hz_size -= marker_pixel_step;  // reset bins size, but carrying the eventual excess Hz into next pixel
        }
+        // process actual bin
+        if (process_bins(&max_power) == true)
+            return;  // new line signaled, return
    }
    if (mode != LOOKING_GLASS_SINGLEPASS) {
        f_center += looking_glass_step;
@@ -218,18 +205,16 @@ void GlassView::on_show() {
 }

 void GlassView::on_range_changed() {
-    reset_live_view(true);
+    reset_live_view();
    f_min = field_frequency_min.value();
    f_max = field_frequency_max.value();
    f_min = f_min * MHZ_DIV;  // Transpose into full frequency realm
    f_max = f_max * MHZ_DIV;
    looking_glass_range = f_max - f_min;
    if (looking_glass_range <= LOOKING_GLASS_SLICE_WIDTH_MAX) {
-        adjust_range(&f_min, &f_max, SCREEN_W);
-        looking_glass_range = f_max - f_min;
        // if the view is done in one pass, show it like in analog_audio_app
        mode = LOOKING_GLASS_SINGLEPASS;
-        offset = 0;
+        offset = 2;
        bin_length = SCREEN_W;
        ignore_dc = 0;
        looking_glass_bandwidth = looking_glass_range;
@@ -237,41 +222,33 @@ void GlassView::on_range_changed() {
        each_bin_size = looking_glass_bandwidth / SCREEN_W;
        looking_glass_step = looking_glass_bandwidth;
        f_center_ini = f_min + (looking_glass_bandwidth / 2);  // Initial center frequency for sweep
-    } else {                                                   // if ( mode == LOOKING_GLASS_SLOWSCAN || mode == LOOKING_GLASS_FASTSCAN )
+    } else {
        // view is made in multiple pass, use original bin picking
        mode = scan_type.selected_index_value();
-        if (mode == LOOKING_GLASS_FASTSCAN) {
-            offset = 2;
-            bin_length = SCREEN_W;
-            ignore_dc = 1;
-        } else {  // if( mode == LOOKING_GLASS_SLOWSCAN )
-            offset = 16;
-            bin_length = 80;
-            ignore_dc = 0;
-        }
-        adjust_range(&f_min, &f_max, SCREEN_W);
-        looking_glass_range = f_max - f_min;
        looking_glass_bandwidth = LOOKING_GLASS_SLICE_WIDTH_MAX;
        looking_glass_sampling_rate = LOOKING_GLASS_SLICE_WIDTH_MAX;
        each_bin_size = LOOKING_GLASS_SLICE_WIDTH_MAX / SPEC_NB_BINS;
-        looking_glass_step = (bin_length + (ignore_dc * 12)) * each_bin_size;
+        if (mode == LOOKING_GLASS_FASTSCAN) {
+            offset = 2;
+            ignore_dc = 4;
+            bin_length = SCREEN_W;
+        } else {  // if( mode == LOOKING_GLASS_SLOWSCAN )
+            offset = 2;
+            bin_length = 80;
+            ignore_dc = 0;
+        }
+        looking_glass_step = (bin_length + ignore_dc) * each_bin_size;
        f_center_ini = f_min - (offset * each_bin_size) + (looking_glass_bandwidth / 2);  // Initial center frequency for sweep
    }
    search_span = looking_glass_range / MHZ_DIV;
    marker_pixel_step = looking_glass_range / SCREEN_W;  // Each pixel value in Hz
-                                                         //
-    button_range.set_text("      ");                     // clear up to 6 chars
-    if (locked_range) {
-        button_range.set_text(">" + to_string_dec_uint(search_span) + "<");
-    } else {
-        button_range.set_text(" " + to_string_dec_uint(search_span) + " ");
-    }

-    pixel_index = 0;   // reset pixel counter
-    max_power = 0;     // reset save max power level
-    bins_Hz_size = 0;  // reset amount of Hz filled up by pixels
-                       //
+    pixel_index = 0;
+    max_power = 0;
+    bins_hz_size = 0;
+
    on_marker_change();
+    update_range_field();

    // set the sample rate and bandwidth
    receiver_model.set_sampling_rate(looking_glass_sampling_rate);
@@ -279,11 +256,11 @@ void GlassView::on_range_changed() {

    receiver_model.set_squelch_level(0);
    f_center = f_center_ini;  // Reset sweep into first slice
-    baseband::set_spectrum(looking_glass_bandwidth, field_trigger.value());
-    receiver_model.set_tuning_frequency(f_center);  // tune rx for this slice
+    baseband::set_spectrum(looking_glass_bandwidth, trigger);
+    receiver_model.set_target_frequency(f_center);  // tune rx for this slice
 }

-void GlassView::PlotMarker(uint8_t pos) {
+void GlassView::plot_marker(uint8_t pos) {
    uint8_t shift_y = 0;
    if (live_frequency_view > 0)  // plot one line down when in live view
    {
@@ -295,7 +272,7 @@ void GlassView::PlotMarker(uint8_t pos) {
    portapack::display.fill_rectangle({pos, 106 + shift_y, 1, 2}, Color::red());         // Red marker bottom
 }

-void GlassView::clip_min(int32_t v) {
+void GlassView::update_min(int32_t v) {
    int32_t min_size = steps;
    if (locked_range)
        min_size = search_span;
@@ -305,15 +282,14 @@ void GlassView::clip_min(int32_t v) {
        v = 7200 - min_size;
    }
    if (v > (field_frequency_max.value() - min_size))
-        field_frequency_max.set_value(v + min_size);
+        field_frequency_max.set_value(v + min_size, false);
    if (locked_range)
-        field_frequency_max.set_value(v + min_size);
+        field_frequency_max.set_value(v + min_size, false);
    else
-        field_frequency_min.set_value(v);
-    on_range_changed();
+        field_frequency_min.set_value(v, false);
 }

-void GlassView::clip_max(int32_t v) {
+void GlassView::update_max(int32_t v) {
    int32_t min_size = steps;
    if (locked_range)
        min_size = search_span;
@@ -323,12 +299,21 @@ void GlassView::clip_max(int32_t v) {
        v = min_size;
    }
    if (v < (field_frequency_min.value() + min_size))
-        field_frequency_min.set_value(v - min_size);
+        field_frequency_min.set_value(v - min_size, false);
    if (locked_range)
-        field_frequency_min.set_value(v - min_size);
+        field_frequency_min.set_value(v - min_size, false);
    else
-        field_frequency_max.set_value(v);
-    on_range_changed();
+        field_frequency_max.set_value(v, false);
+}
+
+void GlassView::update_range_field() {
+    if (!locked_range) {
+        field_range.set_style(&Styles::white);
+        field_range.set_text(" " + to_string_dec_uint(search_span) + " ");
+    } else {
+        field_range.set_style(&Styles::red);
+        field_range.set_text(">" + to_string_dec_uint(search_span) + "<");
+    }
 }

 GlassView::GlassView(
@@ -341,7 +326,7 @@ GlassView::GlassView(
                  &field_frequency_max,
                  &field_lna,
                  &field_vga,
-                  &button_range,
+                  &field_range,
                  &steps_config,
                  &scan_type,
                  &view_config,
@@ -349,255 +334,212 @@ GlassView::GlassView(
                  &filter_config,
                  &field_rf_amp,
                  &range_presets,
-                  &button_marker,
+                  &field_marker,
                  &field_trigger,
                  &button_jump,
                  &button_rst,
                  &freq_stats});

-    load_Presets();  // Load available presets from TXT files (or default)
+    load_presets();  // Load available presets from TXT files (or default).
+    preset_index = clip<uint8_t>(preset_index, 0, presets_db.size());

+    field_frequency_min.set_value(f_min / MHZ_DIV);
    field_frequency_min.on_change = [this](int32_t v) {
-        clip_min(v);
+        range_presets.set_selected_index(0);  // Manual
+        update_min(v);
+        on_range_changed();
    };
-    field_frequency_min.set_value(presets_db[0].min);  // Defaults to first preset
-    field_frequency_min.set_step(steps);
-
    field_frequency_min.on_select = [this, &nav](NumberField& field) {
        auto new_view = nav_.push<FrequencyKeypadView>(field_frequency_min.value() * MHZ_DIV);
        new_view->on_changed = [this, &field](rf::Frequency f) {
-            clip_min(f / MHZ_DIV);
+            field_frequency_min.set_value(f / MHZ_DIV);
        };
    };

+    field_frequency_max.set_value(f_max / MHZ_DIV);
    field_frequency_max.on_change = [this](int32_t v) {
-        clip_max(v);
+        range_presets.set_selected_index(0);  // Manual
+        update_max(v);
+        on_range_changed();
    };
-    field_frequency_max.set_value(presets_db[0].max);  // Defaults to first preset
-    field_frequency_max.set_step(steps);
-
    field_frequency_max.on_select = [this, &nav](NumberField& field) {
        auto new_view = nav_.push<FrequencyKeypadView>(field_frequency_max.value() * MHZ_DIV);
        new_view->on_changed = [this, &field](rf::Frequency f) {
-            clip_max(f / MHZ_DIV);
+            field_frequency_max.set_value(f / MHZ_DIV);
        };
    };

-    field_lna.on_change = [this](int32_t v) {
-        reset_live_view(true);
-        this->on_lna_changed(v);
-    };
-    field_lna.set_value(receiver_model.lna());
-
-    field_vga.on_change = [this](int32_t v_db) {
-        reset_live_view(true);
-        this->on_vga_changed(v_db);
-    };
-    field_vga.set_value(receiver_model.vga());
-
-    steps_config.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
+    steps_config.on_change = [this](size_t, OptionsField::value_t v) {
        field_frequency_min.set_step(v);
        field_frequency_max.set_step(v);
        steps = v;
    };
-    steps_config.set_selected_index(0);  // default of 1 Mhz steps
+    steps_config.set_selected_index(0);  // 1 Mhz step.

-    scan_type.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
+    scan_type.on_change = [this](size_t, OptionsField::value_t v) {
        mode = v;
        on_range_changed();
    };
-    scan_type.set_selected_index(0);  // default legacy fast scan
+    scan_type.set_selected_index(mode);

-    view_config.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
-        // clear between changes
-        reset_live_view(true);
-        if (v == 0) {
-            live_frequency_view = 0;
-            level_integration.hidden(true);
-            freq_stats.hidden(true);
-            button_jump.hidden(true);
-            button_rst.hidden(true);
-            display.scroll_set_area(109, 319);  // Restart scroll on the correct coordinates
-        } else if (v == 1) {
-            display.fill_rectangle({{0, 108}, {SCREEN_W, 24}}, {0, 0, 0});
-            live_frequency_view = 1;
-            display.scroll_disable();
-            level_integration.hidden(false);
-            freq_stats.hidden(false);
-            button_jump.hidden(false);
-            button_rst.hidden(false);
-        } else if (v == 2) {
-            display.fill_rectangle({{0, 108}, {SCREEN_W, 24}}, {0, 0, 0});
-            live_frequency_view = 2;
-            display.scroll_disable();
-            level_integration.hidden(false);
-            freq_stats.hidden(false);
-            button_jump.hidden(false);
-            button_rst.hidden(false);
+    view_config.on_change = [this](size_t, OptionsField::value_t v) {
+        reset_live_view();  // Clear between changes.
+        live_frequency_view = v;
+
+        switch (v) {
+            case 0:  // SPEC
+                level_integration.hidden(true);
+                freq_stats.hidden(true);
+                button_jump.hidden(true);
+                button_rst.hidden(true);
+                display.scroll_set_area(109, 319);  // Restart scroll on the correct coordinates.
+                break;
+
+            case 1:  // LEVEL
+                display.fill_rectangle({{0, 108}, {SCREEN_W, 24}}, {0, 0, 0});
+                display.scroll_disable();
+                level_integration.hidden(false);
+                freq_stats.hidden(false);
+                button_jump.hidden(false);
+                button_rst.hidden(false);
+                break;
+
+            case 2:  // PEAK
+            default:
+                display.fill_rectangle({{0, 108}, {SCREEN_W, 24}}, {0, 0, 0});
+                display.scroll_disable();
+                level_integration.hidden(false);
+                freq_stats.hidden(false);
+                button_jump.hidden(false);
+                button_rst.hidden(false);
+                break;
        }
+
        set_dirty();
    };
-    view_config.set_selected_index(0);  // default spectrum
+    view_config.set_selected_index(live_frequency_view);

-    level_integration.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
-        reset_live_view(true);
+    level_integration.on_change = [this](size_t, OptionsField::value_t v) {
+        reset_live_view();
        live_frequency_integrate = v;
    };
-    level_integration.set_selected_index(3);  // default integration of ( 3 * old value + new_value ) / 4
+    level_integration.set_selected_index(live_frequency_integrate);

-    filter_config.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
-        reset_live_view(true);
+    filter_config.on_change = [this](size_t ix, OptionsField::value_t v) {
+        reset_live_view();
        min_color_power = v;
+        filter_index = ix;
    };
-    filter_config.set_selected_index(0);
+    filter_config.set_selected_index(filter_index);

-    range_presets.on_change = [this](size_t n, OptionsField::value_t v) {
-        (void)n;
+    range_presets.on_change = [this](size_t ix, OptionsField::value_t v) {
+        preset_index = ix;
+        if (ix == 0) return;  // Don't update range for "Manual".
+
+        // NB: Don't trigger updates, presets directly set the range
+        // values without applying step or range lock.
        field_frequency_min.set_value(presets_db[v].min, false);
        field_frequency_max.set_value(presets_db[v].max, false);
        on_range_changed();
    };
+    range_presets.set_selected_index(preset_index);

-    button_marker.on_change = [this]() {
-        if (((int)marker_pixel_index + button_marker.get_encoder_delta()) < 0) {
-            marker_pixel_index = 0;
-        } else if (((int)marker_pixel_index + button_marker.get_encoder_delta()) > SCREEN_W) {
-            marker_pixel_index = SCREEN_W;
-        } else {
-            marker_pixel_index = marker_pixel_index + button_marker.get_encoder_delta();
-        }
+    field_marker.on_encoder_change = [this](TextField&, EncoderEvent delta) {
+        marker_pixel_index = clip<uint8_t>(marker_pixel_index + delta, 0, SCREEN_W);
        on_marker_change();
-        button_marker.set_encoder_delta(0);
    };

-    button_marker.on_select = [this](ButtonWithEncoder&) {
-        receiver_model.set_tuning_frequency(marker);  // Center tune rx in marker freq.
-        receiver_model.set_frequency_step(MHZ_DIV);   // Preset a 1 MHz frequency step into RX -> AUDIO
-        nav_.pop();
-        nav_.push<AnalogAudioView>();  // Jump into audio view
+    field_marker.on_select = [this](TextField&) {
+        // Launch Audio with marker frequency.
+        launch_audio(marker);
    };

    field_trigger.on_change = [this](int32_t v) {
-        baseband::set_spectrum(looking_glass_bandwidth, v);
+        trigger = v;
+        baseband::set_spectrum(looking_glass_bandwidth, trigger);
    };
-    field_trigger.set_value(32);  // Defaults to 32, as normal triggering resolution
+    field_trigger.set_value(trigger);

-    button_range.on_select = [this](Button&) {
-        if (locked_range) {
-            locked_range = false;
-            button_range.set_style(&Styles::white);
-            button_range.set_text(" " + to_string_dec_uint(search_span) + " ");
-        } else {
-            locked_range = true;
-            button_range.set_style(&Styles::red);
-            button_range.set_text(">" + to_string_dec_uint(search_span) + "<");
-        }
+    field_range.on_select = [this](TextField&) {
+        locked_range = !locked_range;
+        update_range_field();
    };

    button_jump.on_select = [this](Button&) {
-        receiver_model.set_tuning_frequency(max_freq_hold);  // Center tune rx in marker freq.
-        receiver_model.set_frequency_step(MHZ_DIV);          // Preset a 1 MHz frequency step into RX -> AUDIO
-        nav_.pop();
-        nav_.push<AnalogAudioView>();  // Jump into audio view
+        // Launch Audio with peak frequency.
+        launch_audio(max_freq_hold);
    };

    button_rst.on_select = [this](Button&) {
-        reset_live_view(true);
+        reset_live_view();
    };

    display.scroll_set_area(109, 319);
-    baseband::set_spectrum(looking_glass_bandwidth, field_trigger.value());  // trigger:
-                                                                             // Discord User jteich:  WidebandSpectrum::on_message to set the trigger value. In WidebandSpectrum::execute ,
-                                                                             // it keeps adding the output of the fft to the buffer until "trigger" number of calls are made,
-                                                                             // at which time it pushes the buffer up with channel_spectrum.feed

-    marker_pixel_index = 120;
-    on_range_changed();
+    // trigger:
+    // Discord User jteich:  WidebandSpectrum::on_message to set the trigger value. In WidebandSpectrum::execute,
+    // it keeps adding the output of the fft to the buffer until "trigger" number of calls are made,
+    // at which time it pushes the buffer up with channel_spectrum.feed
+    baseband::set_spectrum(looking_glass_bandwidth, trigger);
+
+    marker_pixel_index = SCREEN_W / 2;
+    on_range_changed();  // Force a UI update.

-    receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis);
    receiver_model.set_sampling_rate(looking_glass_sampling_rate);   // 20mhz
    receiver_model.set_baseband_bandwidth(looking_glass_bandwidth);  // possible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz
    receiver_model.set_squelch_level(0);
    receiver_model.enable();
 }

-void GlassView::load_Presets() {
-    File presets_file;  // LOAD /WHIPCALC/ANTENNAS.TXT from microSD
-    auto result = presets_file.open("LOOKINGGLASS/PRESETS.TXT");
-    presets_db.clear();  // Start with fresh db
-    if (result.is_valid()) {
-        presets_Default();  // There is no txt, store a default range
-    } else {
-        std::string line;  // There is a txt file
-        char one_char[1];  // Read it char by char
-        for (size_t pointer = 0; pointer < presets_file.size(); pointer++) {
-            presets_file.seek(pointer);
-            presets_file.read(one_char, 1);
-            if ((int)one_char[0] > 31) {       // ascii space upwards
-                line += one_char[0];           // Add it to the textline
-            } else if (one_char[0] == '\n') {  // New Line
-                txtline_process(line);         // make sense of this textline
-                line.clear();                  // Ready for next textline
-            }
+void GlassView::load_presets() {
+    File presets_file;
+    auto error = presets_file.open("LOOKINGGLASS/PRESETS.TXT");
+    presets_db.clear();
+
+    // Add the "Manual" entry.
+    presets_db.push_back({0, 0, "Manual"});
+
+    if (!error) {
+        auto reader = FileLineReader(presets_file);
+        for (const auto& line : reader) {
+            if (line.length() == 0 || line[0] == '#')
+                continue;
+
+            auto cols = split_string(line, ',');
+            if (cols.size() != 3)
+                continue;
+
+            preset_entry entry{};
+            parse_int(cols[0], entry.min);
+            parse_int(cols[1], entry.max);
+            entry.label = trimr(cols[2]);
+
+            if (entry.min == 0 || entry.max == 0 || entry.min >= entry.max)
+                continue;  // Invalid line.
+
+            presets_db.emplace_back(std::move(entry));
        }
-        if (line.length() > 0)
-            txtline_process(line);  // Last line had no newline at end ?
-        if (!presets_db.size())
-            presets_Default();  // no antenna on txt, use default
    }
-    populate_Presets();
+
+    populate_presets();
 }

-void GlassView::txtline_process(std::string& line) {
-    if (line.find("#") != std::string::npos)
-        return;  // Line is just a comment
-
-    size_t comma = line.find(",");  // Get first comma position
-    if (comma == std::string::npos)
-        return;  // No comma at all
-
-    size_t previous = 0;
-    preset_entry new_preset;
-
-    new_preset.min = std::stoi(line.substr(0, comma));
-    if (!new_preset.min)
-        return;  // No frequency!
-
-    previous = comma + 1;
-    comma = line.find(",", previous);  // Search for next delimiter
-    if (comma == std::string::npos)
-        return;  // No comma at all
-
-    new_preset.max = std::stoi(line.substr(previous, comma - previous));
-    if (!new_preset.max)
-        return;  // No frequency!
-
-    new_preset.label = line.substr(comma + 1);
-    if (new_preset.label.size() == 0)
-        return;  // No label ?
-
-    presets_db.push_back(new_preset);  // Add this preset.
-}
-
-void GlassView::populate_Presets() {
+void GlassView::populate_presets() {
    using option_t = std::pair<std::string, int32_t>;
    using options_t = std::vector<option_t>;
    options_t entries;

-    for (preset_entry preset : presets_db) {  // go thru all available presets
+    for (const auto& preset : presets_db)
        entries.emplace_back(preset.label, entries.size());
-    }
-    range_presets.set_options(entries);
+
+    range_presets.set_options(std::move(entries));
 }

-void GlassView::presets_Default() {
-    presets_db.clear();
-    presets_db.push_back({2320, 2560, "DEFAULT WIFI 2.4GHz"});
+void GlassView::launch_audio(rf::Frequency center_freq) {
+    receiver_model.set_target_frequency(center_freq);
+    auto settings = receiver_model.settings();
+    settings.frequency_step = MHZ_DIV;        // Preset a 1 MHz frequency step into RX -> AUDIO
+    nav_.replace<AnalogAudioView>(settings);  // Jump into audio view
 }

 }  // namespace ui
@@ -26,7 +26,9 @@

 #include "ui.hpp"
 #include "portapack.hpp"
+#include "app_settings.hpp"
 #include "baseband_api.hpp"
+#include "radio_state.hpp"
 #include "receiver_model.hpp"
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
@@ -37,6 +39,7 @@
 #include "spectrum_color_lut.hpp"

 namespace ui {
+
 #define LOOKING_GLASS_SLICE_WIDTH_MAX 20000000
 #define MHZ_DIV 1000000

@@ -60,7 +63,7 @@ class GlassView : public View {
    GlassView& operator=(const GlassView& nav);

    ~GlassView();
-    std::string title() const override { return "LookingGlass"; };
+    std::string title() const override { return "Looking Glass"; };

    void on_show() override;
    void on_hide() override;
@@ -68,6 +71,29 @@ class GlassView : public View {

   private:
    NavigationView& nav_;
+    RxRadioState radio_state_{ReceiverModel::Mode::SpectrumAnalysis};
+    // Settings
+    rf::Frequency f_min = 260 * MHZ_DIV;  // Default to 315/433 remote range.
+    rf::Frequency f_max = 500 * MHZ_DIV;
+    uint8_t preset_index = 0;  // Manual
+    uint8_t filter_index = 0;  // OFF
+    uint8_t trigger = 32;
+    uint8_t mode = LOOKING_GLASS_FASTSCAN;
+    uint8_t live_frequency_view = 0;       // Spectrum
+    uint8_t live_frequency_integrate = 3;  // Default (3 * old value + new_value) / 4
+    app_settings::SettingsManager settings_{
+        "rx_glass"sv,
+        app_settings::Mode::RX,
+        {
+            {"min"sv, &f_min},
+            {"max"sv, &f_max},
+            {"preset"sv, &preset_index},
+            {"filter"sv, &filter_index},
+            {"trigger"sv, &trigger},
+            {"scan_mode"sv, &mode},
+            {"freq_view"sv, &live_frequency_view},
+            {"freq_integrate"sv, &live_frequency_integrate},
+        }};

    struct preset_entry {
        rf::Frequency min{};
@@ -76,69 +102,65 @@ class GlassView : public View {
    };

    std::vector<preset_entry> presets_db{};
-    void clip_min(int32_t v);
-    void clip_max(int32_t v);
+    void update_min(int32_t v);
+    void update_max(int32_t v);
+    void update_range_field();
    void get_max_power(const ChannelSpectrum& spectrum, uint8_t bin, uint8_t& max_power);
    rf::Frequency get_freq_from_bin_pos(uint8_t pos);
    void on_marker_change();
-    int64_t next_mult_of(int64_t num, int64_t multiplier);
-    void adjust_range(int64_t* f_min, int64_t* f_max, int64_t width);
    void retune();
-    bool move_to_next_position();
+    bool process_bins(uint8_t* powerlevel);
    void on_channel_spectrum(const ChannelSpectrum& spectrum);
    void do_timers();
+    int64_t next_mult_of(int64_t num, int64_t multiplier);
+    void adjust_range(int64_t* f_min, int64_t* f_max, int64_t width);
    void on_range_changed();
-    void on_lna_changed(int32_t v_db);
-    void on_vga_changed(int32_t v_db);
-    void reset_live_view(bool clear_screen);
+    void reset_live_view();
    void add_spectrum_pixel(uint8_t power);
-    void PlotMarker(uint8_t pos);
-    void load_Presets();
-    void txtline_process(std::string& line);
-    void populate_Presets();
-    void presets_Default();
+    void plot_marker(uint8_t pos);
+    void load_presets();
+    void populate_presets();
+    void launch_audio(rf::Frequency center_freq);

-    rf::Frequency f_min{0}, f_max{0};
    rf::Frequency search_span{0};
    rf::Frequency f_center{0};
    rf::Frequency f_center_ini{0};
+
    rf::Frequency marker{0};
    uint8_t marker_pixel_index{0};
    rf::Frequency marker_pixel_step{0};
-    // size of one spectrum bin in Hz
+
+    // Size of one spectrum bin in Hz.
    rf::Frequency each_bin_size{0};
-    // consumed number of Hz, used to know if we have filled a 'bag' , a corresponding pixel length on screen
-    rf::Frequency bins_Hz_size{0};
+    // Bandwidth of a single spectrum bin.
+    rf::Frequency bins_hz_size{0};
    rf::Frequency looking_glass_sampling_rate{0};
    rf::Frequency looking_glass_bandwidth{0};
    rf::Frequency looking_glass_range{0};
    rf::Frequency looking_glass_step{0};
-    uint8_t min_color_power{0};
+    uint8_t min_color_power{0};  // Filter cutoff level.
    uint32_t pixel_index{0};
-    std::array<Color, SCREEN_W> spectrum_row = {0};
-    std::array<uint8_t, SCREEN_W> spectrum_data = {0};
-    ChannelSpectrumFIFO* fifo{nullptr};
-    uint8_t max_power = 0;
-    int32_t steps = 0;
-    uint8_t live_frequency_view = 0;
-    int16_t live_frequency_integrate = 3;
-    int64_t max_freq_hold = 0;
-    int16_t max_freq_power = -1000;
+
+    std::array<Color, SCREEN_W> spectrum_row{};
+    std::array<uint8_t, SCREEN_W> spectrum_data{};
+    ChannelSpectrumFIFO* fifo{};
+
+    int32_t steps = 1;
    bool locked_range = false;
+
+    uint8_t max_power = 0;
+    rf::Frequency max_freq_hold = 0;
+    rf::Frequency last_max_freq = 0;
+    int16_t max_freq_power = -1000;
    uint8_t bin_length = SCREEN_W;
-    uint8_t real_bin_length = SCREEN_W;
    uint8_t offset = 0;
-    uint8_t tune_offset = 0;
-    uint8_t bin = 0;
-    int64_t last_max_freq = 0;
-    uint8_t mode = LOOKING_GLASS_FASTSCAN;
    uint8_t ignore_dc = 0;

    Labels labels{
-        {{0, 0}, "MIN:     MAX:     LNA   VGA  ", Color::light_grey()},
-        {{0, 1 * 16}, "RANGE:       FILTER:      AMP:", Color::light_grey()},
+        {{0, 0 * 16}, "MIN:     MAX:     LNA   VGA  ", Color::light_grey()},
+        {{0, 1 * 16}, "RANGE:       FILTER:     AMP:", Color::light_grey()},
        {{0, 2 * 16}, "PRESET:", Color::light_grey()},
-        {{0, 3 * 16}, "MARKER:            MHz", Color::light_grey()},
+        {{0, 3 * 16}, "MARKER:          MHz", Color::light_grey()},
        {{0, 4 * 16}, "RES:    STEP:", Color::light_grey()}};

    NumberField field_frequency_min{
@@ -161,8 +183,8 @@ class GlassView : public View {
    VGAGainField field_vga{
        {27 * 8, 0 * 16}};

-    Button button_range{
-        {7 * 8, 1 * 16, 4 * 8, 16},
+    TextField field_range{
+        {6 * 8, 1 * 16, 6 * 8, 16},
        ""};

    OptionsField filter_config{
@@ -170,23 +192,21 @@ class GlassView : public View {
        4,
        {
            {"OFF ", 0},
-            {"MID ", 118},  // 85 +25 (110) + a bit more to kill all blue
+            {"MID ", 118},  // 85 + 25 (110) + a bit more to kill all blue
            {"HIGH", 202},  // 168 + 25 (193)
        }};

    RFAmpField field_rf_amp{
-        {29 * 8, 1 * 16}};
+        {28 * 8, 1 * 16}};

    OptionsField range_presets{
        {7 * 8, 2 * 16},
        20,
-        {
-            {" NONE (WIFI 2.4GHz)", 0},
-        }};
+        {}};

-    ButtonWithEncoder button_marker{
-        {7 * 8, 3 * 16, 10 * 8, 16},
-        " "};
+    TextField field_marker{
+        {7 * 8, 3 * 16, 9 * 8, 16},
+        ""};

    NumberField field_trigger{
        {4 * 8, 4 * 16},
@@ -22,22 +22,21 @@

 #include "ui_mictx.hpp"

-#include "baseband_api.hpp"
 #include "audio.hpp"
-
-#include "wm8731.hpp"
-using wolfson::wm8731::WM8731;
-
-#include "tonesets.hpp"
-#include "portapack_hal.hpp"
-#include "cpld_update.hpp"
-#include "string_format.hpp"
+#include "baseband_api.hpp"
 #include "irq_controls.hpp"
+#include "ui_freqman.hpp"
+#include "portapack_hal.hpp"
+#include "string_format.hpp"
+#include "tonesets.hpp"
+#include "ui_tone_key.hpp"
+#include "wm8731.hpp"

 #include <cstring>

 using namespace tonekey;
 using namespace portapack;
+using wolfson::wm8731::WM8731;

 WM8731 audio_codec_wm8731{i2c0, 0x1a};

@@ -52,7 +51,7 @@ void MicTXView::focus() {
            field_rxfrequency.focus();
            break;
        default:
-            field_va.focus();
+            check_va.focus();
            break;
    }
 }
@@ -61,23 +60,56 @@ void MicTXView::update_vumeter() {
    vumeter.set_value(audio_level);
 }

+void MicTXView::update_tx_icon() {
+    tx_icon.set_foreground(transmitting ? Color::red() : Color::black());
+    tx_icon.set_background(transmitting ? Color::yellow() : Color::black());
+}
+
 void MicTXView::on_tx_progress(const bool done) {
    // Roger beep played, stop transmitting
    if (done)
        set_tx(false);
 }

+uint8_t MicTXView::shift_bits(void) {
+    uint8_t shift_bits_s16{4};  // shift bits factor to the captured ADC S16 audio sample.
+
+    if (audio::debug::codec_name() == "WM8731") {
+        switch (ak4951_alc_and_wm8731_boost_GUI) {
+            case 0:                  // +12 dB’s respect reference level orig fw 1.5.x fw FM : when +20dB's boost ON) and shift bits (>>8),
+                shift_bits_s16 = 6;  // now mic-boost on (+20dBs) and shift bits (>>6), +20+12=32 dB’s (orig fw +20 dBs+ 0dBs)=> +12dB's respect ref.
+                break;
+            case 1:                  // +06 dB’s reference level, (when +20dB's boost ON)
+                shift_bits_s16 = 7;  // now mic-boost on (+20dBs) and shift bits (>>7), +20+06=26 dB’s (orig fw +20 dBs+ 0dBs) => +06dB's respect ref.
+                break;
+            case 2:
+                shift_bits_s16 = 4;  // +04 dB’s respect ref level, (when +20dB's boost OFF)
+                break;               // now mic-boost off (+00dBs) shift bits (4) (+0+24dB's)=24 dBs => +04dB's respect ref.
+            case 3:
+                shift_bits_s16 = 5;  // -02 dB’s respect ref level, (when +20dB's boost OFF)
+                break;               // now mic-boost off (+00dBs) shift bits (5) (+0+18dB's)=18 dBs => -02dB's respect ref.
+            case 4:
+                shift_bits_s16 = 6;  // -08 dB’s respect ref level, (when +20dB's boost OFF)
+                break;               // now mic-boost off (+00dBs) shift bits (6) (+0+12dB's)=12 dBs => -08dB's respect ref.
+        }
+    } else {
+        shift_bits_s16 = 8;  // Initialized default fixed >>8_FM for FM tx mod, shift audio data for AK4951, using top 8 bits s16 data (>>8)
+    }
+    return shift_bits_s16;
+}
+
 void MicTXView::configure_baseband() {
+    // TODO: Can this use the transmitter model instead?
    baseband::set_audiotx_config(
        sampling_rate / 20,  // Update vu-meter at 20Hz
        transmitting ? transmitter_model.channel_bandwidth() : 0,
-        mic_gain,
-        shift_bits_s16,  // to be used in dsp_modulate
+        mic_gain_x10 / 10.0,
+        shift_bits(),  // to be used in dsp_modulate
        TONES_F2D(tone_key_frequency(tone_key_index), sampling_rate),
-        enable_am,
-        enable_dsb,
-        enable_usb,
-        enable_lsb);
+        (mic_mod_index == MIC_MOD_AM),
+        (mic_mod_index == MIC_MOD_DSB),
+        (mic_mod_index == MIC_MOD_USB),
+        (mic_mod_index == MIC_MOD_LSB));
 }

 void MicTXView::set_tx(bool enable) {
@@ -86,7 +118,11 @@ void MicTXView::set_tx(bool enable) {
            rxaudio(false);  // Then turn off audio RX
        transmitting = true;
        configure_baseband();
-        transmitter_model.set_tuning_frequency(tx_frequency);  // Now,no need: transmitter_model.set_tx_gain(tx_gain), nor (rf_amp);
+        transmitter_model.set_target_frequency(tx_frequency);  // Now, no need: transmitter_model.set_tx_gain(tx_gain), nor (rf_amp);
+
+        /* The max. Power Spectrum Densitiy in WFM with High tone mod level (80%) and high 32kHZ subtone as fmod.  with max fdeviation 150k ,
+         BW aprox = 2 *(150K + 32K) = 364khz, then we just select the minimum TX  LPF 1M75. */
+        transmitter_model.set_baseband_bandwidth(1'750'000);
        transmitter_model.enable();
        portapack::pin_i2s0_rx_sda.mode(3);  // This is already done in audio::init but gets changed by the CPLD overlay reprogramming
    } else {
@@ -97,12 +133,24 @@ void MicTXView::set_tx(bool enable) {
            transmitting = false;
            configure_baseband();
            transmitter_model.disable();
-            if (rx_enabled)     // If audio RX is enabled and we've been transmitting
+
+            if (rx_enabled) {
                rxaudio(true);  // Turn back on audio RX
+
+                // TODO FIXME: this isn't working: vu meter isn't going to 0:
+                vumeter.set_value(0);  // Reset  vumeter
+                vumeter.dirty();       // Force to refresh vumeter.
+            }
        }
    }
+    update_tx_icon();
 }

+bool MicTXView::tx_button_held() {
+    const auto switches_state = get_switches_state();
+    return switches_state[(size_t)ui::KeyEvent::Select];
+};
+
 void MicTXView::do_timing() {
    if (va_enabled) {
        if (!transmitting) {
@@ -124,7 +172,8 @@ void MicTXView::do_timing() {
                if ((decay_timer >> 8) >= decay_ms) {
                    decay_timer = 0;
                    attack_timer = 0;
-                    set_tx(false);
+                    if (!button_touch && !tx_button_held())
+                        set_tx(false);
                } else {
                    decay_timer += lcd_frame_duration;
                }
@@ -134,54 +183,40 @@ void MicTXView::do_timing() {
        }
    } else {
        // Check for PTT release
-        const auto switches_state = get_switches_state();
-        if (!switches_state[4] && transmitting && !button_touch)  // Select button
+        if (transmitting && !button_touch && !tx_button_held())
            set_tx(false);
    }
 }

-/* Hmmmm. Maybe useless now.
-void MicTXView::on_tuning_frequency_changed(rf::Frequency f) {
-        transmitter_model.set_tuning_frequency(f);
-        //if ( rx_enabled )
-                receiver_model.set_tuning_frequency(f); //Update freq also for RX
-}
-*/
-
-void MicTXView::rxaudio(bool is_on) {
-    if (is_on) {
+void MicTXView::rxaudio(bool enable) {
+    if (enable) {
        audio::input::stop();
        baseband::shutdown();

-        if (enable_am || enable_usb || enable_lsb || enable_dsb) {  // "NFM/FM",0 ," WFM  ",1 ,  "  AM  ",2, " USB  ", 3, " LSB  ",4, " DSB-SC", 5
-            baseband::run_image(portapack::spi_flash::image_tag_am_audio);
-            receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);                 // that AM demodulation engine is common to all Amplitude mod : AM/USB/LSB/DSB (2,3,4,5)
-            if (options_mode.selected_index() < 5)                                       // We will be called here with 2,3,4,5 . We treat here demod. filter 2,3,4; (excluding DSB-C case (5) it is treated more down).
-                receiver_model.set_am_configuration(options_mode.selected_index() - 1);  // selecting proper filter(2,3,4). 2-1=1=>6k-AM(1) , 3-1=2=>+3k-USB(2), 4-1=3=>-3K-LSB(3),
-        } else {                                                                         // We are in NFM/FM or WFM    (NFM BW:8k5 or 11k / FM BW 16k  / WFM  BW:200k)
-
-            if (enable_wfm) {  // WFM , BW 200Khz aprox , or the two new addional BW filters (180k, 40k)
+        switch (mic_mod_index) {
+            case MIC_MOD_NFM:  // NFM BW:8k5 or 11k / FM BW 16k
+                baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
+                receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+                // receiver_model.set_nbfm_configuration(n); is called above, depending user's selection (8k5, 11k, 16k).
+                break;
+            case MIC_MOD_WFM:  // WFM, BW 200Khz aprox, or the two new addional BW filters (180k, 40k)
                baseband::run_image(portapack::spi_flash::image_tag_wfm_audio);
                receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
-                // receiver_model.set_wfm_configuration(n);  // it is called above  , depending user's selection (200k, 180k,40k).
-            } else {  // NFM BW:8k5 or  11k / FM BW 16k
-                baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
-                receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);  //
-                                                                                        // receiver_model.set_nbfm_configuration(n); is called above  , depending user's selection (8k5, 11k, 16k).
-            }
+                // receiver_model.set_wfm_configuration(n); is called above, depending user's selection (200k, 180k, 0k).
+                break;
+            case MIC_MOD_AM:
+            case MIC_MOD_DSB:
+            case MIC_MOD_USB:
+            case MIC_MOD_LSB:
+                baseband::run_image(portapack::spi_flash::image_tag_am_audio);
+                receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);                 // that AM demodulation engine is common to all Amplitude mod : AM/USB/LSB/DSB (2,3,4,5)
+                if (options_mode.selected_index() < 5)                                       // We will be called here with 2,3,4,5. We treat here demod. filter 2,3,4; (excluding DSB-C case (5) it is treated more down).
+                    receiver_model.set_am_configuration(options_mode.selected_index() - 1);  // selecting proper filter(2,3,4). 2-1=1=>6k-AM(1), 3-1=2=>+3k-USB(2), 4-1=3=>-3K-LSB(3),
+                break;
        }
-        receiver_model.set_sampling_rate(3072000);
-        receiver_model.set_baseband_bandwidth(1750000);
-        //		receiver_model.set_tuning_frequency(field_frequency.value()); //probably this too can be commented out.
-        if (bool_same_F_tx_rx_enabled)                          // when stop TX ,define to which freq RX we return
-            receiver_model.set_tuning_frequency(tx_frequency);  // Update freq also for RX = TX
-        else
-            receiver_model.set_tuning_frequency(rx_frequency);  // Now with seperate freq controls!
-        receiver_model.set_lna(rx_lna);
-        receiver_model.set_vga(rx_vga);
-        receiver_model.set_rf_amp(rx_amp);
+
+        receiver_model.set_target_frequency(bool_same_F_tx_rx_enabled ? tx_frequency : rx_frequency);
        receiver_model.enable();
-        hackrf::cpld::load_sram_no_verify();  // to have a good RX without any ghost inside Mic App
        audio::output::start();
    } else {                                                                    // These incredibly convoluted steps are required for the vumeter to reappear when stopping RX.
        receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);  // This fixes something with AM RX...
@@ -190,14 +225,82 @@ void MicTXView::rxaudio(bool is_on) {

        baseband::run_image(portapack::spi_flash::image_tag_mic_tx);
        audio::output::stop();
-        audio::input::start(ak4951_alc_and_wm8731_boost_GUI);  // When detected AK4951 => set up ALC mode; when detected WM8731 => set up mic_boost ON/OFF.
+        audio::input::start(ak4951_alc_and_wm8731_boost_GUI, mic_to_HP_enabled);  // set up ALC mode (AK4951) or set up mic_boost ON/OFF (WM8731). and the check box "Hear Mic"
        portapack::pin_i2s0_rx_sda.mode(3);
        configure_baseband();
    }
 }

-void MicTXView::set_ptt_visibility(bool v) {
-    tx_button.hidden(!v);
+void MicTXView::set_rxbw_options(void) {
+    using option_t = std::pair<std::string, int32_t>;
+    using options_t = std::vector<option_t>;
+    options_t rxbw;  // Aux structure to change dynamically field_rxbw contents
+
+    switch (mic_mod_index) {
+        case MIC_MOD_NFM:
+            freqman_set_bandwidth_option(NFM_MODULATION, field_rxbw);  // restore dynamic field_rxbw value with NFM options from freqman_db.cpp
+            field_rxbw.set_by_value(receiver_model.nbfm_configuration());
+            break;
+        case MIC_MOD_WFM:
+            freqman_set_bandwidth_option(WFM_MODULATION, field_rxbw);  // restore dynamic field_rxbw value with WFM options from freqman_db.cpp
+            field_rxbw.set_by_value(receiver_model.wfm_configuration());
+            break;
+        case MIC_MOD_AM:
+            rxbw.emplace_back("DSB 9k", 0);  // we offer in AM DSB two audio BW 9k / 6k.
+            rxbw.emplace_back("DSB 6k", 1);
+            field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
+            break;
+        case MIC_MOD_DSB:
+            rxbw.emplace_back("USB+3k", 0);  // added dynamically two options (index 0,1) to that DSB-SC case to the field_rxbw value.
+            rxbw.emplace_back("LSB-3k", 1);
+            field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
+            break;
+        case MIC_MOD_USB:
+            rxbw.emplace_back("USB+3k", 0);  // locked a fixed option, to display it.
+            field_rxbw.set_options(rxbw);    // store that aux GUI option to the field_rxbw.
+            break;
+        case MIC_MOD_LSB:
+            rxbw.emplace_back("LSB-3k", 0);  // locked a fixed option, to display it.
+            field_rxbw.set_options(rxbw);    // store that aux GUI option to the field_rxbw.
+            break;
+    }
+}
+
+void MicTXView::set_rxbw_defaults(bool use_app_settings) {
+    if (use_app_settings) {
+        field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);
+        field_rxbw.set_by_value(rxbw_index);
+    } else if (mic_mod_index == MIC_MOD_NFM) {
+        field_bw.set_value(10);  // NFM TX bw 10k, RX bw 16k (2) default
+        field_rxbw.set_by_value(2);
+    } else if (mic_mod_index == MIC_MOD_WFM) {
+        field_bw.set_value(75);  // WFM TX bw 75K, RX bw 200k (0) default
+        field_rxbw.set_by_value(0);
+    }
+    // field_bw is hidden in other modulation cases
+}
+
+void MicTXView::update_receiver_rxbw(void) {
+    // In Previous fw versions, that nbfm_configuration(n) was done in any mode (FM/AM/SSB/DSB)...strictly speaking only need it in (NFM/FM)
+    // In AM TX mode, we will allow both independent RX audio BW : AM 9K (9K00AE3 / AM 6K (6K00AE3). (In AM option v can be 0 (9k), 1 (6k)
+    // In DSB-SC TX mode, we will allow both independent RX SSB demodulation (USB / LSB side band). in that submenu, v is 0 (SSB1 USB) or 1 (SSB2 LSB)
+    switch (mic_mod_index) {
+        case MIC_MOD_NFM:
+            receiver_model.set_nbfm_configuration(rxbw_index);  // we are in NFM/FM case, we need to select proper NFM/FM RX channel filter, NFM BW 8K5(0), NFM BW 11K(1), FM BW 16K (2)
+            break;
+        case MIC_MOD_WFM:
+            receiver_model.set_wfm_configuration(rxbw_index);  // we are in WFM case, we need to select proper WFB RX BW filter, WFM BW 200K(0), WFM BW 180K(1), WFM BW 40K(2)
+            break;
+        case MIC_MOD_AM:
+            receiver_model.set_am_configuration(rxbw_index);  // we are in AM TX mode, we need to select proper AM full path config AM-9K filter. 0+0 =>AM-9K(0), 0+1=1 =>AM-6K(1),
+            break;
+        case MIC_MOD_USB:
+        case MIC_MOD_LSB:
+            break;  // change can't happen in these modes because there's only one BW choice
+        case MIC_MOD_DSB:
+            receiver_model.set_am_configuration(rxbw_index + 2);  // we are in DSB-SC TX mode, we need to select proper SSB filter. 0+2 =>usb(2), 1+2=3 =>lsb(3),
+            break;
+    }
 }

 MicTXView::MicTXView(
@@ -206,423 +309,317 @@ MicTXView::MicTXView(

    baseband::run_image(portapack::spi_flash::image_tag_mic_tx);

-    if (audio::debug::codec_name() == "WM8731") {
-        add_children({&labels_WM8731,  // we have audio codec WM8731, same MIC menu  as original.
-                      &vumeter,
-                      &options_gain,  // MIC GAIN float factor on the GUI.
-                      &options_wm8731_boost_mode,
-                      //		&check_va,
-                      &field_va,
-                      &field_va_level,
-                      &field_va_attack,
-                      &field_va_decay,
-                      &field_bw,
-                      &tx_view,  // it already integrates previous rfgain, rfamp.
-                      &options_mode,
-                      &field_frequency,
-                      &options_tone_key,
-                      &check_rogerbeep,
-                      &check_common_freq_tx_rx,  // added to handle common or separate freq- TX/RX
-                      &check_rxactive,
-                      &field_volume,
-                      &field_rxbw,
-                      &field_squelch,
-                      &field_rxfrequency,
-                      &field_rxlna,
-                      &field_rxvga,
-                      &field_rxamp,
-                      &tx_button});
+    bool wm = (audio::debug::codec_name() == "WM8731");
+    add_children({&labels_both,
+                  wm ? &labels_WM8731 : &labels_AK4951,  // enable ALC if AK4951
+                  &vumeter,
+                  &options_gain,  // MIC GAIN float factor on the GUI.
+                  wm ? &options_wm8731_boost_mode : &options_ak4951_alc_mode,
+                  &check_va,
+                  &field_va_level,
+                  &field_va_attack,
+                  &field_va_decay,
+                  &field_bw,
+                  &tx_view,  // it already integrates previous rfgain, rfamp.
+                  &options_mode,
+                  &field_frequency,
+                  &options_tone_key,
+                  &check_rogerbeep,
+                  &check_mic_to_HP,          // check box to activate "hear mic"
+                  &check_common_freq_tx_rx,  // added to handle common or separate freq- TX/RX
+                  &check_rxactive,
+                  &field_volume,
+                  &field_rxbw,
+                  &field_squelch,
+                  &field_rxfrequency,
+                  &field_rxlna,
+                  &field_rxvga,
+                  &field_rxamp,
+                  &tx_button,
+                  &tx_icon});

-    } else {
-        add_children({&labels_AK4951,  // we have audio codec AK4951, enable Automatic Level Control
-                      &vumeter,
-                      &options_gain,
-                      &options_ak4951_alc_mode,
-                      //		&check_va,
-                      &field_va,
-                      &field_va_level,
-                      &field_va_attack,
-                      &field_va_decay,
-                      &field_bw,
-                      &tx_view,  // it already integrates previous rfgain, rfamp.
-                      &options_mode,
-                      &field_frequency,
-                      &options_tone_key,
-                      &check_rogerbeep,
-                      &check_common_freq_tx_rx,  // added to handle common or separate freq- TX/RX
-                      &check_rxactive,
-                      &field_volume,
-                      &field_rxbw,
-                      &field_squelch,
-                      &field_rxfrequency,
-                      &field_rxlna,
-                      &field_rxvga,
-                      &field_rxamp,
-                      &tx_button});
-    }
+    set_rxbw_options();
+    set_rxbw_defaults(settings_.loaded());

    tone_keys_populate(options_tone_key);
+    options_tone_key.set_selected_index(tone_key_index);
    options_tone_key.on_change = [this](size_t i, int32_t) {
        tone_key_index = i;
    };
-    options_tone_key.set_selected_index(0);
+
+    check_rogerbeep.set_value(rogerbeep_enabled);
+    check_rogerbeep.on_select = [this](Checkbox&, bool v) {
+        rogerbeep_enabled = v;
+    };
+
+    field_rxlna.set_value(receiver_model.lna());
+    field_rxlna.on_change = [this](int32_t v) {
+        receiver_model.set_lna(v);
+    };
+
+    field_rxvga.set_value(receiver_model.vga());
+    field_rxvga.on_change = [this](int32_t v) {
+        receiver_model.set_vga(v);
+    };
+
+    field_rxamp.set_value(receiver_model.rf_amp());
+    field_rxamp.on_change = [this](int32_t v) {
+        receiver_model.set_rf_amp(v);
+    };

    options_gain.on_change = [this](size_t, int32_t v) {
-        mic_gain = v / 10.0;
+        mic_gain_x10 = v;
        configure_baseband();
    };
-    options_gain.set_selected_index(1);  // x1.0  preselected default.
+    options_gain.set_by_value(mic_gain_x10);  // x1.0 preselected default.
+
+    field_rxbw.on_change = [this](size_t, int32_t v) {
+        rxbw_index = v;
+        update_receiver_rxbw();
+    };
+    field_rxbw.set_by_value(rxbw_index);
+
+    field_squelch.set_value(receiver_model.squelch_level());
+    field_squelch.on_change = [this](int32_t v) {
+        receiver_model.set_squelch_level(v);
+    };

    if (audio::debug::codec_name() == "WM8731") {
        options_wm8731_boost_mode.on_change = [this](size_t, int8_t v) {
-            switch (v) {
-                case 0:                  // +12 dB’s respect reference level orig fw 1.5.x fw FM : when +20dB's boost ON) and shift bits (>>8),
-                    shift_bits_s16 = 6;  // now mic-boost on (+20dBs) and shift bits (>>6), +20+12=32 dB’s (orig fw +20 dBs+ 0dBs)=> +12dB's respect ref.
-                    break;
-                case 1:                  // +06 dB’s reference level , (when +20dB's boost ON)
-                    shift_bits_s16 = 7;  // now mic-boost on (+20dBs) and shift bits (>>7), +20+06=26 dB’s (orig fw +20 dBs+ 0dBs) => +06dB's respect ref.
-                    break;
-                case 2:
-                    shift_bits_s16 = 4;  // +04 dB’s respect ref level , (when +20dB's boost OFF)
-                    break;               // now mic-boost off (+00dBs) shift bits (4) (+0+24dB's)=24 dBs => +04dB's respect ref.
-                case 3:
-                    shift_bits_s16 = 5;  // -02 dB’s respect ref level , (when +20dB's boost OFF)
-                    break;               // now mic-boost off (+00dBs) shift bits (5) (+0+18dB's)=18 dBs => -02dB's respect ref.
-                case 4:
-                    shift_bits_s16 = 6;  // -08 dB’s respect ref level , (when +20dB's boost OFF)
-                    break;               // now mic-boost off (+00dBs) shift bits (6) (+0+12dB's)=12 dBs => -08dB's respect ref.
-            }
-            ak4951_alc_and_wm8731_boost_GUI = v;                   // 0,..4 WM8731_boost dB's options, (combination boost on/off , and effective gain in captured data >>x)
-            audio::input::start(ak4951_alc_and_wm8731_boost_GUI);  // Detected (WM8731) , set up the proper wm_boost on/off , 0..4 (0,1) boost_on , (2,3,4) boost_0ff
-            configure_baseband();                                  // to update in real timme,sending msg ,  var-parameters >>shift_bits FM msg ,to audio_tx from M0 to M4 Proc -
+            ak4951_alc_and_wm8731_boost_GUI = v;                                      // 0..4, WM8731_boost dB's options, (combination boost on/off, and effective gain in captured data >>x)
+            audio::input::start(ak4951_alc_and_wm8731_boost_GUI, mic_to_HP_enabled);  // Detected (WM8731), set up the proper wm_boost on/off, 0..4 (0,1) boost_on, (2,3,4) boost_off,and the check box "Hear Mic"
+            configure_baseband();                                                     // to update in real time, sending msg, var-parameters >>shift_bits FM msg, to audio_tx from M0 to M4 Proc -
        };
-        options_wm8731_boost_mode.set_selected_index(3);  // preset GUI index 3 as default WM -> -02 dB's .
+        if (!settings_.loaded()) {
+            ak4951_alc_and_wm8731_boost_GUI = 3;  // preset GUI index 3 as default WM -> -02 dB's
+        }
+        options_wm8731_boost_mode.set_selected_index(ak4951_alc_and_wm8731_boost_GUI);
    } else {
-        shift_bits_s16 = 8;  // Initialized default fixed >>8_FM for FM tx mod ,  shift audio data for AK4951  ,using top 8 bits s16 data (>>8)
        options_ak4951_alc_mode.on_change = [this](size_t, int8_t v) {
-            ak4951_alc_and_wm8731_boost_GUI = v;                   // 0,..11,  AK4951 Mic -Automatic volume Level Control  options,
-            audio::input::start(ak4951_alc_and_wm8731_boost_GUI);  // Detected (AK4951) ==> Set up proper ALC mode from 0..11 options
-            configure_baseband();                                  // sending fixed >>8_FM , var-parameters msg ,  to audiotx from this M0 to M4 process.
+            ak4951_alc_and_wm8731_boost_GUI = v;                                      // 0..11, AK4951 Mic -Automatic volume Level Control options,
+            audio::input::start(ak4951_alc_and_wm8731_boost_GUI, mic_to_HP_enabled);  // Detected (AK4951) ==> Set up proper ALC mode from 0..11 options, and the check box "Hear Mic"
+            configure_baseband();                                                     // sending fixed >>8_FM, var-parameters msg, to audiotx from this M0 to M4 process.
        };
+        if (!settings_.loaded())
+            ak4951_alc_and_wm8731_boost_GUI = 0;
+        options_ak4951_alc_mode.set_selected_index(ak4951_alc_and_wm8731_boost_GUI);
    }

-    // options_ak4951_alc_mode.set_selected_index(0);
-
-    tx_frequency = transmitter_model.tuning_frequency();
-    field_frequency.set_value(transmitter_model.tuning_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
+    // WARNING: transmitter_model.set_target_frequency() and receiver_model.set_target_frequency() both update the same tuning freq, but one has an offset!
+    tx_frequency = transmitter_model.target_frequency();
    field_frequency.on_change = [this](rf::Frequency f) {
        tx_frequency = f;
-        if (!rx_enabled) {  // not activated receiver. just update freq TX
-            transmitter_model.set_tuning_frequency(f);
-        } else {                                         // activated receiver.
-            if (bool_same_F_tx_rx_enabled)               // user selected common freq- TX = RX
-                receiver_model.set_tuning_frequency(f);  // Update common freq also for RX
-        }
+        if (!rx_enabled)
+            transmitter_model.set_target_frequency(f);
+        else if (bool_same_F_tx_rx_enabled)
+            receiver_model.set_target_frequency(f);
+        // else tuning freq will be updated when rx is enabled, transmitting starts, or when rx_frequency is changed (if rx_enabled)
    };
    field_frequency.on_edit = [this, &nav]() {
        focused_ui = 0;
        // TODO: Provide separate modal method/scheme?
        auto new_view = nav.push<FrequencyKeypadView>(tx_frequency);
        new_view->on_changed = [this](rf::Frequency f) {
-            tx_frequency = f;
-            if (!rx_enabled) {
-                transmitter_model.set_tuning_frequency(f);
-            } else {
-                if (bool_same_F_tx_rx_enabled)
-                    receiver_model.set_tuning_frequency(f);  // Update freq also for RX
-            }
            this->field_frequency.set_value(f);
-            set_dirty();
        };
    };
+    field_frequency.set_value(tx_frequency);

-    field_bw.on_change = [this](uint32_t v) {
-        transmitter_model.set_channel_bandwidth(v * 1000);
-    };
-    field_bw.set_value(10);  // pre-default first time, TX  deviation FM for NFM / FM
+    // TODO: would be nice if frequency step was configurable in this app
+    field_frequency.set_step(receiver_model.frequency_step());

-    // now , no need direct update , field_rfgain , field_rfamp (it is done in ui_transmitter.cpp)
-
-    options_mode.on_change = [this](size_t, int32_t v) {  //{ "NFM/FM", 0 }, { " WFM  ", 1 },{ "AM", 2 },{ "USB", 3 },{ "LSB", 4 },{ "DSB", 5 }
-        enable_am = false;
-        enable_usb = false;
-        enable_lsb = false;
-        enable_dsb = false;
-        enable_wfm = false;
-
-        using option_t = std::pair<std::string, int32_t>;
-        using options_t = std::vector<option_t>;
-        options_t rxbw;  // Aux structure to change dynamically  field_rxbw contents,
-
-        switch (v) {
-            case 0:  //{ "FM", 0 }
-                enable_am = false;
-                enable_usb = false;
-                enable_lsb = false;
-                enable_dsb = false;
-                field_bw.set_value(10);  // pre-default deviation FM for WFM
-                // field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);
-                // if (rx_enabled)
-                rxaudio(rx_enabled);         // Update now if we have RX audio on
-                options_tone_key.hidden(0);  // we are in FM mode , we should have active the Key-tones & CTCSS option.
-
-                rxbw.emplace_back(" NFM1:8k5  ", 0);  // restore the original dynamic field_rxbw value.
-                rxbw.emplace_back(" NFM2:11k  ", 1);
-                rxbw.emplace_back(" FM  :16k  ", 2);
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                field_rxbw.hidden(0);  // we are in FM mode,  we need to allow the user set up of the RX NFM BW selection (8K5, 11K, 16K)
-                field_bw.hidden(0);    // we are in FM mode, we need to allow FM deviation parameter , in non FM mode.
-                break;
-            case 1:  //{ "WFM", 1 }
-                enable_am = false;
-                enable_usb = false;
-                enable_lsb = false;
-                enable_dsb = false;
-                enable_wfm = true;
-                field_bw.set_value(75);  // pre-default deviation FM for WFM
-                // field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);
-                // if (rx_enabled)
-                rxaudio(rx_enabled);         // Update now if we have RX audio on
-                options_tone_key.hidden(0);  // we are in WFM mode , we should have active the Key-tones & CTCSS option.
-
-                rxbw.emplace_back("  200k-WFM ", 0);  // We allow the user selection of the 3 x WFM BW filters, (0) WFM-200K, (1) WFM-180K , (2) WFM-40K .
-                rxbw.emplace_back("  180k-WFM ", 1);
-                rxbw.emplace_back("   40k-WFM ", 2);
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                field_rxbw.hidden(0);  // we are in WFM mode,  we need to show to the user the selected BW WFM filter .
-                field_bw.hidden(0);    // we are in WFM mode, we need to allow WFM deviation parameter , in non FM mode.
-                break;
-            case 2:  //{ "AM", 2 }
-                enable_am = true;
-                rxaudio(rx_enabled);                     // Update now if we have RX audio on
-                options_tone_key.set_selected_index(0);  // we are NOT in FM mode ,  we reset the possible previous key-tones &CTCSS selection.
-                set_dirty();                             // Refresh display
-                options_tone_key.hidden(1);              // we hide that Key-tones & CTCSS input selecction, (no meaning in AM/DSB/SSB).
-
-                rxbw.emplace_back(" DSB1-9k   ", 0);  // we offer in AM DSB two audio BW 9k / 6k  .
-                rxbw.emplace_back(" DSB2-6k   ", 1);
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                field_rxbw.hidden(0);       // we show fixed RX  AM BW 6Khz
-                field_bw.hidden(1);         // we hide the FM TX deviation parameter , in non FM mode.
-                check_rogerbeep.hidden(0);  // make visible again the "rogerbeep" selection.
-                break;
-            case 3:  //{ "USB", 3 }
-                enable_usb = true;
-                rxaudio(rx_enabled);               // Update now if we have RX audio on
-                check_rogerbeep.set_value(false);  // reset the possible activation of roger beep, because it is not compatible with SSB , by now.
-                check_rogerbeep.hidden(1);         // hide that roger beep selection.
-
-                rxbw.emplace_back("  USB+3k   ", 0);  // locked a fixed option , to display it .
-                field_rxbw.set_options(rxbw);         // store that aux GUI option to the field_rxbw.
-
-                set_dirty();  // Refresh display
-                break;
-            case 4:  //{ "LSB", 4 }
-                enable_lsb = true;
-                rxaudio(rx_enabled);               // Update now if we have RX audio on
-                check_rogerbeep.set_value(false);  // reset the possible activation of roger beep, because it is not compatible with SSB , by now.
-                check_rogerbeep.hidden(1);         // hide that roger beep selection.
-
-                rxbw.emplace_back("  LSB-3k   ", 0);  // locked a fixed option , to display it .
-                field_rxbw.set_options(rxbw);         // store that aux GUI option to the field_rxbw.
-
-                set_dirty();  // Refresh display
-                break;
-            case 5:  //{ "DSB-SC", 5 }
-                enable_dsb = true;
-                rxaudio(rx_enabled);        // Update now if we have RX audio on
-                check_rogerbeep.hidden(0);  // make visible again the "rogerbeep" selection.
-
-                rxbw.emplace_back("SSB1:USB+3k", 0);  // added dynamically two options (index 0,1) to that DSB-C case to the  field_rxbw value.
-                rxbw.emplace_back("SSB2:LSB-3k", 1);
-
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                break;
-        }
-        // configure_baseband();
-    };
-
-    /*
-        check_va.on_select = [this](Checkbox&, bool v) {
-                va_enabled = v;
-                text_ptt.hidden(v);			//hide / show PTT text
-                check_rxactive.hidden(v); 	//hide / show the RX AUDIO
-                set_dirty();				//Refresh display
-        };
-        */
-    field_va.set_selected_index(1);
-    field_va.on_change = [this](size_t, int32_t v) {
-        switch (v) {
-            case 0:
-                va_enabled = 0;
-                this->set_ptt_visibility(0);
-                check_rxactive.hidden(0);
-                ptt_enabled = 0;
-                break;
-            case 1:
-                va_enabled = 0;
-                this->set_ptt_visibility(1);
-                check_rxactive.hidden(0);
-                ptt_enabled = 1;
-                break;
-            case 2:
-                if (!rx_enabled) {
-                    va_enabled = 1;
-                    this->set_ptt_visibility(0);
-                    check_rxactive.hidden(1);
-                    ptt_enabled = 0;
-                } else {
-                    field_va.set_selected_index(1);
-                }
-                break;
-        }
-        set_dirty();
-    };
-
-    check_rogerbeep.on_select = [this](Checkbox&, bool v) {
-        rogerbeep_enabled = v;
-    };
-
-    check_common_freq_tx_rx.on_select = [this](Checkbox&, bool v) {
-        bool_same_F_tx_rx_enabled = v;
-        field_rxfrequency.hidden(v);                                           // Hide or show separated freq RX field . (When no hide user can enter down indep. freq for RX)
-        set_dirty();                                                           // Refresh GUI interface
-        receiver_model.set_tuning_frequency(v ? tx_frequency : rx_frequency);  // To go to the proper tuned freq. when toggling it
-    };
-
-    field_va_level.on_change = [this](int32_t v) {
-        va_level = v;
-        vumeter.set_mark(v);
-    };
-    field_va_level.set_value(40);
-
-    field_va_attack.on_change = [this](int32_t v) {
-        attack_ms = v;
-    };
-    field_va_attack.set_value(500);
-
-    field_va_decay.on_change = [this](int32_t v) {
-        decay_ms = v;
-    };
-    field_va_decay.set_value(1000);
-
-    check_rxactive.on_select = [this](Checkbox&, bool v) {
-        //		vumeter.set_value(0);	//Start with a clean vumeter
-        rx_enabled = v;
-        //		check_va.hidden(v); 	//Hide or show voice activation
-        rxaudio(v);   // Activate-Deactivate audio rx accordingly
-        set_dirty();  // Refresh interface
-    };
-
-    field_rxbw.on_change = [this](size_t, int32_t v) {
-        if (!(enable_am || enable_usb || enable_lsb || enable_dsb || enable_wfm)) {
-            // In Previous fw versions, that nbfm_configuration(n)  was done in any mode (FM/AM/SSB/DSB)...strictly speaking only need it in (NFM/FM)
-            receiver_model.set_nbfm_configuration(v);    // we are in  NFM/FM case, we need to  select proper NFM/FM RX channel filter , NFM BW 8K5(0), NFM BW 11K(1) , FM BW 16K (2)
-        } else {                                         // we are not in  NFM/FM mode  .(we could be in any of the rest : AM /USB/LSB/DSB-SC)
-            if (enable_am) {                             // we are in AM TX mode , we will allow both independent RX audio BW :  AM 9K (9K00AE3 / AM 6K (6K00AE3). (In AM option v can be 0 (9k) , 1 (6k)
-                receiver_model.set_am_configuration(v);  // we are in AM TX mode , we need to  select proper AM full path config AM-9K filter. 0+0 =>AM-9K(0), 0+1=1 =>AM-6K(1),
-            }
-            if (enable_dsb) {                                // we are in DSB-SC in TX mode , we will allow both independent RX SSB demodulation (USB / LSB side band). in that submenu, v is 0 (SSB1 USB) or 1 (SSB2 LSB)
-                receiver_model.set_am_configuration(v + 2);  // we are in DSB-SC TX mode , we need to  select proper SSB filter. 0+2 =>usb(2), 1+2=3 =>lsb(3),
-            }
-            if (enable_wfm) {
-                receiver_model.set_wfm_configuration(v);  // we are in  WFM case, we need to  select proper WFB RX BW filter , WFM BW 200K(0), WFM BW 180K(1) , WFM BW 40K(2)
-            }
-        }
-    };
-
-    field_squelch.on_change = [this](int32_t v) {
-        receiver_model.set_squelch_level(100 - v);
-    };
-    field_squelch.set_value(0);
-    receiver_model.set_squelch_level(0);
-
-    rx_frequency = receiver_model.tuning_frequency();
+    // WARNING: transmitter_model.set_target_frequency() and receiver_model.set_target_frequency() both update the same tuning freq, but one has an offset!
    field_rxfrequency.set_value(rx_frequency);
-    field_rxfrequency.set_step(receiver_model.frequency_step());
    field_rxfrequency.on_change = [this](rf::Frequency f) {  // available when field rxfrequency not hidden => user selected separated freq RX/TX-
        rx_frequency = f;
        if (rx_enabled)
-            receiver_model.set_tuning_frequency(f);
+            receiver_model.set_target_frequency(rx_frequency);
    };
    field_rxfrequency.on_edit = [this, &nav]() {  // available when field rxfrequency not hidden => user selected separated freq RX/TX-
        focused_ui = 1;
        // TODO: Provide separate modal method/scheme?
        auto new_view = nav.push<FrequencyKeypadView>(rx_frequency);
        new_view->on_changed = [this](rf::Frequency f) {
-            rx_frequency = f;
-            if (rx_enabled)
-                receiver_model.set_tuning_frequency(f);
            this->field_rxfrequency.set_value(f);
-            set_dirty();
        };
    };

-    rx_lna = receiver_model.lna();
-    field_rxlna.on_change = [this](int32_t v) {
-        rx_lna = v;
-        if (rx_enabled)
-            receiver_model.set_lna(v);
-    };
-    field_rxlna.set_value(rx_lna);
+    // TODO: would be nice if frequency step was configurable in this app
+    field_rxfrequency.set_step(receiver_model.frequency_step());

-    rx_vga = receiver_model.vga();
-    field_rxvga.on_change = [this](int32_t v) {
-        rx_vga = v;
-        if (rx_enabled)
-            receiver_model.set_vga(v);
+    check_common_freq_tx_rx.on_select = [this](Checkbox&, bool v) {
+        bool_same_F_tx_rx_enabled = v;
+        field_rxfrequency.hidden(v);
+        set_dirty();
+        receiver_model.set_target_frequency(bool_same_F_tx_rx_enabled ? tx_frequency : rx_frequency);  // To go to the proper tuned freq. when toggling it
    };
-    field_rxvga.set_value(rx_vga);
+    check_common_freq_tx_rx.set_value(bool_same_F_tx_rx_enabled);

-    rx_amp = receiver_model.rf_amp();
-    field_rxamp.on_change = [this](int32_t v) {
-        rx_amp = v;
-        if (rx_enabled)
-            receiver_model.set_rf_amp(rx_amp);
+    field_bw.on_change = [this](uint32_t v) {
+        transmitter_model.set_channel_bandwidth(v * 1000);
    };
-    field_rxamp.set_value(rx_amp);
+    field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);  // pre-default first time, TX deviation FM for NFM / FM
+
+    // now, no need direct update, field_rfgain, field_rfamp (it is done in ui_transmitter.cpp)
+
+    options_mode.on_change = [this](size_t, int32_t v) {
+        mic_mod_index = v;
+
+        // update bw & tone key visibility - only visible in NFM/WFM modes
+        if ((mic_mod_index == MIC_MOD_NFM) || (mic_mod_index == MIC_MOD_WFM)) {
+            field_bw.hidden(false);
+            options_tone_key.hidden(false);
+        } else {
+            field_bw.hidden(true);
+            options_tone_key.set_selected_index(0);
+            options_tone_key.hidden(true);
+        }
+
+        // update rogerbeep visibility - disable in USB/LSB modes
+        if ((mic_mod_index == MIC_MOD_USB) || (mic_mod_index == MIC_MOD_LSB)) {
+            check_rogerbeep.set_value(false);
+            check_rogerbeep.hidden(true);
+        } else {
+            check_rogerbeep.hidden(false);
+        }
+
+        // update squelch visibility - only visible in NFM mode
+        field_squelch.hidden(mic_mod_index != MIC_MOD_NFM);
+
+        // update bandwidth
+        set_rxbw_options();
+        set_rxbw_defaults(false);
+        field_rxbw.hidden(false);
+        set_dirty();  // Refresh display
+
+        rxaudio(rx_enabled);  // Update now if we have RX audio on
+        // configure_baseband();
+    };
+    options_mode.set_selected_index(mic_mod_index);
+
+    check_mic_to_HP.on_select = [this](Checkbox&, bool v) {
+        mic_to_HP_enabled = v;
+        if (mic_to_HP_enabled) {  // When user click to "hear mic to HP", we will select the higher acoustic sound Option MODE  ALC or BOOST-
+            audio::input::loopback_mic_to_hp_enable();
+            if (audio::debug::codec_name() == "WM8731") {
+                options_wm8731_boost_mode.set_selected_index(0);  // In WM we always go to Boost +12 dB’s respect reference level
+            } else if (ak4951_alc_and_wm8731_boost_GUI == 0)      // In AK we are changing only that ALC index =0, because in that option, there is no sound.
+                options_ak4951_alc_mode.set_selected_index(1);    // alc_mode =0 , means no ALC,no DIGITAL filter block (by passed), and that mode has no loopback mode.
+        } else {
+            audio::input::loopback_mic_to_hp_disable();
+        }
+    };
+    check_mic_to_HP.set_value(mic_to_HP_enabled);
+
+    check_rxactive.on_select = [this](Checkbox&, bool v) {
+        //		vumeter.set_value(0);	//Start with a clean vumeter
+        rx_enabled = v;
+        check_mic_to_HP.hidden(rx_enabled);  // Toggle Hide / show "Hear Mic" checkbox depending if we activate or not the receiver. (if RX on => no visible "Mic Hear" option)
+        if ((rx_enabled) && (transmitting))
+            check_mic_to_HP.set_value(transmitting);  // Once we activate the "Rx audio" in reception time we disable "Hear Mic", but we allow it again in TX time.
+
+        if (rx_enabled)
+            check_va.set_value(false);  // Disallow voice activation during RX audio (for now) - Future TODO: Should allow VOX during RX audio
+
+        rxaudio(v);   // Activate-Deactivate audio RX (receiver) accordingly
+        set_dirty();  // Refresh interface
+    };
+    check_rxactive.set_value(rx_enabled);

    tx_button.on_select = [this](Button&) {
-        if (ptt_enabled && !transmitting) {
+        if (!transmitting) {
            set_tx(true);
        }
    };

    tx_button.on_touch_release = [this](Button&) {
-        if (button_touch) {
-            button_touch = false;
-            set_tx(false);
-        }
+        button_touch = false;
    };

    tx_button.on_touch_press = [this](Button&) {
-        if (!transmitting) {
-            button_touch = true;
-        }
+        button_touch = true;
    };

+    field_va_level.on_change = [this](int32_t v) {
+        va_level = v;
+        vumeter.set_mark(v);
+    };
+    field_va_level.set_value(va_level);
+
+    field_va_attack.set_value(attack_ms);
+    field_va_attack.on_change = [this](int32_t v) {
+        attack_ms = v;
+    };
+
+    field_va_decay.set_value(decay_ms);
+    field_va_decay.on_change = [this](int32_t v) {
+        decay_ms = v;
+    };
+
+    check_va.on_select = [this](Checkbox&, bool v) {
+        va_enabled = v;
+        if (va_enabled)
+            check_rxactive.set_value(false);  // Disallow RX-audio in VOX mode (for now) - Future TODO: Should allow VOX during RX audio
+    };
+    check_va.set_value(va_enabled);
+
+    // These shouldn't be necessary, but because
+    // this app uses both transmitter_model and directly
+    // configures the baseband, these end up being required.
    transmitter_model.set_sampling_rate(sampling_rate);
    transmitter_model.set_baseband_bandwidth(1750000);

    set_tx(false);

    audio::set_rate(audio::Rate::Hz_24000);
-    audio::input::start(ak4951_alc_and_wm8731_boost_GUI);  // When detected AK4951 => set up ALC mode; when detected WM8731 => set up mic_boost ON/OFF.
+    audio::input::start(ak4951_alc_and_wm8731_boost_GUI, mic_to_HP_enabled);  // set up ALC mode (AK4951) or set up mic_boost ON/OFF (WM8731). and the check box "Hear Mic"
+
+    // Workaround for bad RX reception when app first started -- shouldn't be necessary:
+    // Trigger receiver to update modulation.
+    if (rx_enabled)
+        receiver_model.set_squelch_level(receiver_model.squelch_level());
+}
+
+MicTXView::MicTXView(
+    NavigationView& nav,
+    ReceiverModel::settings_t override)
+    : MicTXView(nav) {
+    // Try to use the modulation/bandwidth from RX settings.
+    // TODO: These concepts should be merged so there's only one.
+    switch (override.mode) {
+        case ReceiverModel::Mode::AMAudio:
+            options_mode.set_selected_index(MIC_MOD_AM);
+            break;
+        case ReceiverModel::Mode::NarrowbandFMAudio:
+            options_mode.set_selected_index(MIC_MOD_NFM);
+            break;
+        case ReceiverModel::Mode::WidebandFMAudio:
+            options_mode.set_selected_index(MIC_MOD_WFM);
+            break;
+
+        // Unsupported modulations.
+        case ReceiverModel::Mode::SpectrumAnalysis:
+        case ReceiverModel::Mode::Capture:
+        default:
+            break;
+    }
+
+    check_common_freq_tx_rx.set_value(true);  // freq passed from other app is in tx_frequency, so set rx_frequency=tx_frequency
+
+    // TODO: bandwidth selection is tied too tightly to the UI
+    // controls. It's not possible to set the bandwidth here without
+    // refactoring. Also options_mode seems to have a category error.
 }

 MicTXView::~MicTXView() {
    audio::input::stop();
-    transmitter_model.set_tuning_frequency(tx_frequency);  // Save Tx frequency instead of Rx. Or maybe we need some "System Wide" changes to seperate Tx and Rx frequency.
-    transmitter_model.disable();
-    if (rx_enabled)  // Also turn off audio rx if enabled
+    if (rx_enabled) {  // Also turn off both (audio rx if enabled, and disable  mic_loop to HP)
        rxaudio(false);
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+        audio::input::loopback_mic_to_hp_disable();  // Leave Mic audio off in the main menu (as original audio path, otherwise we had No audio in next "Audio App")
+    }
+    transmitter_model.set_target_frequency(tx_frequency);  // Set tx_frequency here to be saved in app_settings (might not match rx_frequency)
+    transmitter_model.disable();
+    baseband::shutdown();
 }

 }  // namespace ui
@@ -20,18 +20,18 @@
 * Boston, MA 02110-1301, USA.
 */

+// TODO: Consolidate Modulation/Bandwidth modes/settings with freqman/receiver_model.
+
 #ifndef __UI_MICTX_H__
 #define __UI_MICTX_H__

-#define SHORT_UI true
-#define NORMAL_UI false
-
+#include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ui.hpp"
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
 #include "transmitter_model.hpp"
-#include "tone_key.hpp"
 #include "message.hpp"
 #include "receiver_model.hpp"
 #include "ui_transmitter.hpp"
@@ -41,6 +41,7 @@ namespace ui {
 class MicTXView : public View {
   public:
    MicTXView(NavigationView& nav);
+    MicTXView(NavigationView& nav, ReceiverModel::settings_t override);
    ~MicTXView();

    MicTXView(const MicTXView&) = delete;
@@ -69,56 +70,85 @@ class MicTXView : public View {
    static constexpr uint32_t lcd_frame_duration = (256 * 1000UL) / 60;  // 1 frame @ 60fps in ms .8 fixed point  /60

    void update_vumeter();
+    bool tx_button_held();
    void do_timing();
    void set_tx(bool enable);
-    //	void on_tuning_frequency_changed(rf::Frequency f);
    void on_tx_progress(const bool done);
+    void update_tx_icon();
+    uint8_t shift_bits(void);
    void configure_baseband();
-
+    void set_rxbw_options(void);
+    void set_rxbw_defaults(bool use_app_settings);
+    void update_receiver_rxbw(void);
    void rxaudio(bool is_on);

-    void set_ptt_visibility(bool v);
+    RxRadioState rx_radio_state_{};
+    TxRadioState tx_radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        sampling_rate /* sampling rate */
+    };

-    bool transmitting{false};
+    enum Mic_Modulation : uint32_t {
+        MIC_MOD_NFM = 0,
+        MIC_MOD_WFM = 1,
+        MIC_MOD_AM = 2,
+        MIC_MOD_USB = 3,
+        MIC_MOD_LSB = 4,
+        MIC_MOD_DSB = 5,
+    };
+
+    // Settings
+    uint32_t mic_mod_index{0};
+    uint32_t rxbw_index{0};
    bool va_enabled{false};
-    bool ptt_enabled{true};
    bool rogerbeep_enabled{false};
+    bool mic_to_HP_enabled{false};
    bool bool_same_F_tx_rx_enabled{false};
+    rf::Frequency rx_frequency{0};
    bool rx_enabled{false};
-    uint32_t tone_key_index{};
-    float mic_gain{1.0};
+    uint32_t tone_key_index{0};
+    uint32_t mic_gain_x10{1};
    uint8_t ak4951_alc_and_wm8731_boost_GUI{0};
+    uint32_t va_level{40};
+    uint32_t attack_ms{500};
+    uint32_t decay_ms{1000};
+    app_settings::SettingsManager settings_{
+        "tx_mic",
+        app_settings::Mode::RX_TX,
+        app_settings::Options::UseGlobalTargetFrequency,
+        {
+            {"mic_mod_index"sv, &mic_mod_index},
+            {"rxbw_index"sv, &rxbw_index},
+            {"same_F_tx_rx"sv, &bool_same_F_tx_rx_enabled},
+            {"mic_rx_frequency"sv, &rx_frequency},
+            {"rx_enabled"sv, &rx_enabled},
+            {"mic_gain_x10"sv, &mic_gain_x10},
+            {"mic_to_HP"sv, &mic_to_HP_enabled},
+            {"alc_and_boost"sv, &ak4951_alc_and_wm8731_boost_GUI},
+            {"va_level"sv, &va_level},
+            {"attack_ms"sv, &attack_ms},
+            {"decay_ms"sv, &decay_ms},
+            {"vox"sv, &va_enabled},
+            {"rogerbeep"sv, &rogerbeep_enabled},
+            {"tone_key_index"sv, &tone_key_index},
+        }};
+
+    rf::Frequency tx_frequency{0};
+    bool transmitting{false};
    uint32_t audio_level{0};
-    uint32_t va_level{};
-    uint32_t attack_ms{};
-    uint32_t decay_ms{};
    uint32_t attack_timer{0};
    uint32_t decay_timer{0};
    int32_t tx_gain{47};
    bool rf_amp{false};
-    int32_t rx_lna{32};
-    int32_t rx_vga{32};
-    bool rx_amp{false};
-    rf::Frequency tx_frequency{0};
-    rf::Frequency rx_frequency{0};
    int32_t focused_ui{2};
    bool button_touch{false};
-    uint8_t shift_bits_s16{4};  // shift bits factor to the captured ADC S16 audio sample.

-    // AM TX Stuff
-    bool enable_am{false};
-    bool enable_dsb{false};
-    bool enable_usb{false};
-    bool enable_lsb{false};
-    bool enable_wfm{false};  // added to distinguish in the FM mode ,  RX BW : NFM (8K5, 11K), FM (16K), WFM(200K)
-
-    Labels labels_WM8731{
+    Labels labels_both{
        {{3 * 8, 1 * 8}, "MIC-GAIN:", Color::light_grey()},
-        {{17 * 8, 1 * 8}, "Boost", Color::light_grey()},
        {{3 * 8, 3 * 8}, "F:", Color::light_grey()},
        {{15 * 8, 3 * 8}, "FM TXBW:    kHz", Color::light_grey()},  // to be more symetric and consistent to the below FM RXBW
-        {{18 * 8, (5 * 8)}, "Mode:", Color::light_grey()},          // now , no need to handle GAIN , Amp here It is handled by ui_transmitter.cpp
-        {{3 * 8, 8 * 8}, "TX Activation:", Color::light_grey()},    // we delete  { { 3 * 8, 5 * 8 }, "GAIN:", Color::light_grey() },
+        {{18 * 8, (5 * 8)}, "Mode:", Color::light_grey()},          // now, no need to handle GAIN, Amp here It is handled by ui_transmitter.cpp
        {{4 * 8, 10 * 8}, "LVL:", Color::light_grey()},             // we delete  { {11 * 8, 5 * 8 }, "Amp:", Color::light_grey() },
        {{12 * 8, 10 * 8}, "ATT:", Color::light_grey()},
        {{20 * 8, 10 * 8}, "DEC:", Color::light_grey()},
@@ -131,25 +161,10 @@ class MicTXView : public View {
        {{5 * 8, (27 * 8) + 2}, "LNA:", Color::light_grey()},
        {{12 * 8, (27 * 8) + 2}, "VGA:", Color::light_grey()},
        {{19 * 8, (27 * 8) + 2}, "AMP:", Color::light_grey()}};
+    Labels labels_WM8731{
+        {{17 * 8, 1 * 8}, "Boost", Color::light_grey()}};
    Labels labels_AK4951{
-        {{3 * 8, 1 * 8}, "MIC-GAIN:", Color::light_grey()},
-        {{17 * 8, 1 * 8}, "ALC", Color::light_grey()},
-        {{3 * 8, 3 * 8}, "F:", Color::light_grey()},
-        {{15 * 8, 3 * 8}, "FM TXBW:    kHz", Color::light_grey()},
-        {{18 * 8, (5 * 8)}, "Mode:", Color::light_grey()},        // now , no need to handle GAIN , Amp here It is handled by ui_transmitter.cpp
-        {{3 * 8, 8 * 8}, "TX Activation:", Color::light_grey()},  // we delete  { { 3 * 8, 5 * 8 }, "GAIN:", Color::light_grey() },
-        {{4 * 8, 10 * 8}, "LVL:", Color::light_grey()},           // we delete  { {11 * 8, 5 * 8 }, "Amp:", Color::light_grey() },
-        {{12 * 8, 10 * 8}, "ATT:", Color::light_grey()},
-        {{20 * 8, 10 * 8}, "DEC:", Color::light_grey()},
-        {{3 * 8, (13 * 8) - 5}, "TONE KEY:", Color::light_grey()},
-        {{3 * 8, (18 * 8) - 1}, "======== Receiver ========", Color::green()},
-        {{(5 * 8), (23 * 8) + 2}, "VOL:", Color::light_grey()},
-        {{14 * 8, (23 * 8) + 2}, "RXBW:", Color::light_grey()},  // we remove the label "FM" because we will display all MOD types RX_BW.
-        {{20 * 8, (25 * 8) + 2}, "SQ:", Color::light_grey()},
-        {{5 * 8, (25 * 8) + 2}, "F_RX:", Color::light_grey()},
-        {{5 * 8, (27 * 8) + 2}, "LNA:", Color::light_grey()},
-        {{12 * 8, (27 * 8) + 2}, "VGA:", Color::light_grey()},
-        {{19 * 8, (27 * 8) + 2}, "AMP:", Color::light_grey()}};
+        {{17 * 8, 1 * 8}, "ALC", Color::light_grey()}};

    VuMeter vumeter{
        {0 * 8, 1 * 8, 2 * 8, 33 * 8},
@@ -165,15 +180,15 @@ class MicTXView : public View {
         {"x2.0", 20}}};

    OptionsField options_ak4951_alc_mode{
-        {20 * 8, 1 * 8},  // Coordinates are: int:x (px), int:y (px)
-        11,
+        {20 * 8, 1 * 8},
+        10,  // Label has 10 chars
        {
-            {" OFF-12kHz", 0},   // Nothing changed from ORIGINAL,keeping ALL programmable  AK4951 Digital Block->OFF, sampling 24Khz)
+            {" OFF-12kHz", 0},   // Nothing changed from ORIGINAL, keeping ALL programmable AK4951 Digital Block->OFF, sampling 24Khz)
            {"+12dB-6kHz", 1},   // ALC-> on, (+12dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
            {"+09dB-6kHz", 2},   // ALC-> on, (+09dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
            {"+06dB-6kHz", 3},   // ALC-> on, (+06dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-            {"+03dB-2kHz", 4},   // ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 3,5k + Pre-amp Mic (+21dB=original)+ EQ boosting ~<2kHz (f0~1k1,fb:1,7K, k=1,8)
-            {"+03dB-4kHz", 5},   // ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 4kHz + Pre-amp Mic (+21dB=original)+ EQ boosting ~<3kHz (f0~1k4,fb~2,4k, k=1,8)
+            {"+03dB-2kHz", 4},   // ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 3,5k + Pre-amp Mic (+21dB=original)+ EQ boosting ~<2kHz (f0~1k1, fb:1,7K, k=1,8)
+            {"+03dB-4kHz", 5},   // ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 4kHz + Pre-amp Mic (+21dB=original)+ EQ boosting ~<3kHz (f0~1k4, fb~2,4k, k=1,8)
            {"+03dB-6kHz", 6},   // ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
            {"+00dB-6kHz", 7},   // ALC-> on, (+00dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
            {"-03dB-6kHz", 8},   // ALC-> on, (-03dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
@@ -183,16 +198,17 @@ class MicTXView : public View {
        }};

    OptionsField options_wm8731_boost_mode{
-        {22 * 8, 1 * 8},  // Coordinates are: int:x (px), int:y (px)
-        5,
+        {22 * 8, 1 * 8},
+        8,  // Label has 8 chars
        {
-            {"ON +12dB", 0},  // WM8731 Mic Boost ON ,original+12dBs condition, easy to saturate ADC sat in high voice  ,relative G = +12 dB's respect ref level
-            {"ON +06dB", 1},  // WM8731 Mic Boost ON ,original+6 dBs condition, easy to saturate ADC sat in high voice  ,relative G = +06 dB's respect ref level
-            {"OFF+04dB", 2},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice  ,relative  G =  +04 dB's (respect ref level) , always effective sampling 24khz
-            {"OFF-02dB", 3},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice  ,relative  G =  -02 dB's (respect ref level)
-            {"OFF-08dB", 4},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice  ,relative  G =  -12 dB's (respect ref level)
+            {"ON +12dB", 0},  // WM8731 Mic Boost ON, original+12dBs condition, easy to saturate ADC sat in high voice, relative G = +12 dB's respect ref level
+            {"ON +06dB", 1},  // WM8731 Mic Boost ON, original+6 dBs condition, easy to saturate ADC sat in high voice, relative G = +06 dB's respect ref level
+            {"OFF+04dB", 2},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice, relative G = +04 dB's (respect ref level), always effective sampling 24khz
+            {"OFF-02dB", 3},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice, relative G = -02 dB's (respect ref level)
+            {"OFF-08dB", 4},  // WM8731 Mic Boost OFF to avoid ADC sat in high voice, relative G = -12 dB's (respect ref level)
        }};

+    // TODO: Use TxFrequencyField
    FrequencyField field_frequency{
        {5 * 8, 3 * 8},
    };
@@ -204,37 +220,26 @@ class MicTXView : public View {
        ' '};

    TransmitterView2 tx_view{
-        // new handling of NumberField field_rfgain, NumberField field_rfamp
-        //	3*8, 2*8, SHORT_UI					// x(columns), y (line) position. (used in Replay / GPS Simul / Playlist App's)
-        3 * 8, 2 * 8, NORMAL_UI  // x(columns), y (line) position. (used in Mic App)
-    };
+        {3 * 8, 5 * 8},
+        /*short_ui*/ false};

    OptionsField options_mode{
        {24 * 8, 5 * 8},
        6,
        {
-            {"NFM/FM", 0},
-            {" WFM  ", 1},
-            {"  AM  ", 2},  // in fact that TX mode = AM -DSB with carrier .
-            {" USB  ", 3},
-            {" LSB  ", 4},
-            {"DSB-SC", 5}  // We are TX Double Side AM Band with suppressed carrier, and allowing in RX both indep SSB lateral band (USB/LSB).
+            {"NFM/FM", MIC_MOD_NFM},
+            {" WFM  ", MIC_MOD_WFM},
+            {"  AM  ", MIC_MOD_AM},  // in fact that TX mode = AM -DSB with carrier.
+            {" USB  ", MIC_MOD_USB},
+            {" LSB  ", MIC_MOD_LSB},
+            {"DSB-SC", MIC_MOD_DSB}  // We are TX Double Side AM Band with suppressed carrier, and allowing in RX both indep SSB lateral band (USB/LSB).
        }};
-    /*
-        Checkbox check_va {
-                { 3 * 8, (10 * 8) - 4 },
-                7,
-                "Voice activation",
-                false
-        };
-        */

-    OptionsField field_va{
-        {17 * 8, 8 * 8},
-        4,
-        {{" OFF", 0},
-         {" PTT", 1},
-         {"AUTO", 2}}};
+    Checkbox check_va{
+        {3 * 8, 8 * 7},
+        10,
+        "VOX enable",
+        false};

    NumberField field_va_level{
        {8 * 8, 10 * 8},
@@ -257,7 +262,7 @@ class MicTXView : public View {

    OptionsField options_tone_key{
        {12 * 8, (13 * 8) - 5},
-        23,
+        18,
        {}};

    Checkbox check_rogerbeep{
@@ -266,6 +271,12 @@ class MicTXView : public View {
        "Roger beep",
        false};

+    Checkbox check_mic_to_HP{
+        {18 * 8, (14 * 8) + 4},
+        10,
+        "Hear Mic",
+        false};
+
    Checkbox check_rxactive{
        {3 * 8, (21 * 8) - 7},
        8,  // it was 18, but if it is string size should be 8
@@ -275,7 +286,7 @@ class MicTXView : public View {
    Checkbox check_common_freq_tx_rx{
        {18 * 8, (21 * 8) - 7},
        8,
-        "F  TX=RX",
+        "F  RX=TX",
        false};

    AudioVolumeField field_volume{
@@ -283,11 +294,11 @@ class MicTXView : public View {

    OptionsField field_rxbw{
        {19 * 8, (23 * 8) + 2},
-        3,
+        7,
        {
-            {" NFM1:8k5  ", 0},
-            {" NFM2:11k  ", 1},
-            {" FM  :16k  ", 2},
+            {" 8k5  ", 0},  // Initial dynamic values when we start Mic App.
+            {" 11k  ", 1},
+            {" 16k  ", 2},
        }};

    NumberField field_squelch{
@@ -298,6 +309,7 @@ class MicTXView : public View {
        ' ',
    };

+    // TODO: Use RxFrequencyField
    FrequencyField field_rxfrequency{
        {10 * 8, (25 * 8) + 2},
    };
@@ -328,9 +340,15 @@ class MicTXView : public View {

    Button tx_button{
        {10 * 8, 30 * 8, 10 * 8, 5 * 8},
-        "TX",
+        "PTT TX",
        true};

+    Image tx_icon{
+        {6 * 8, 31 * 8 + 4, 16, 16},
+        &bitmap_icon_microphone,
+        Color::black(),
+        Color::black()};
+
    MessageHandlerRegistration message_handler_lcd_sync{
        Message::ID::DisplayFrameSync,
        [this](const Message* const) {
@@ -23,7 +23,6 @@
 #include "ui_modemsetup.hpp"

 #include "portapack.hpp"
-
 #include "portapack_persistent_memory.hpp"

 using namespace portapack;
@@ -41,15 +40,20 @@ ModemSetupView::ModemSetupView(
    using options_t = std::vector<option_t>;
    options_t modem_options;

-    add_children({&labels,
-                  &field_baudrate,
-                  &field_mark,
-                  &field_space,
-                  &field_repeat,
-                  &options_modem,
-                  &button_set_modem,
-                  &sym_format,
-                  &button_save});
+    add_children({
+        &labels,
+        &field_baudrate,
+        &field_mark,
+        &field_space,
+        &field_repeat,
+        &options_modem,
+        &button_set_modem,
+        &sym_format_data,
+        &sym_format_parity,
+        &sym_format_stop,
+        &sym_format_msb,
+        &button_save,
+    });

    // Only list AFSK modems for now
    for (size_t i = 0; i < MODEM_DEF_COUNT; i++) {
@@ -59,15 +63,10 @@ ModemSetupView::ModemSetupView(
    options_modem.set_options(modem_options);
    options_modem.set_selected_index(0);

-    sym_format.set_symbol_list(0, "6789");  // Data bits
-    sym_format.set_symbol_list(1, "NEo");   // Parity
-    sym_format.set_symbol_list(2, "012");   // Stop bits
-    sym_format.set_symbol_list(3, "ML");    // MSB/LSB first
-
-    sym_format.set_sym(0, persistent_memory::serial_format().data_bits - 6);
-    sym_format.set_sym(1, persistent_memory::serial_format().parity);
-    sym_format.set_sym(2, persistent_memory::serial_format().stop_bits);
-    sym_format.set_sym(3, persistent_memory::serial_format().bit_order);
+    sym_format_data.set_offset(0, persistent_memory::serial_format().data_bits - 6);
+    sym_format_parity.set_offset(0, persistent_memory::serial_format().parity);
+    sym_format_stop.set_offset(0, persistent_memory::serial_format().stop_bits);
+    sym_format_msb.set_offset(0, persistent_memory::serial_format().bit_order);

    field_mark.set_value(persistent_memory::afsk_mark_freq());
    field_space.set_value(persistent_memory::afsk_space_freq());
@@ -84,18 +83,17 @@ ModemSetupView::ModemSetupView(
    };

    button_save.on_select = [this, &nav](Button&) {
-        serial_format_t serial_format;
-
        persistent_memory::set_afsk_mark(field_mark.value());
        persistent_memory::set_afsk_space(field_space.value());

        persistent_memory::set_modem_baudrate(field_baudrate.value());
        persistent_memory::set_modem_repeat(field_repeat.value());

-        serial_format.data_bits = sym_format.get_sym(0) + 6;
-        serial_format.parity = (parity_enum)sym_format.get_sym(1);
-        serial_format.stop_bits = sym_format.get_sym(2);
-        serial_format.bit_order = (order_enum)sym_format.get_sym(3);
+        serial_format_t serial_format{};
+        serial_format.data_bits = sym_format_data.get_offset(0) + 6;
+        serial_format.parity = (parity_enum)sym_format_parity.get_offset(0);
+        serial_format.stop_bits = sym_format_stop.get_offset(0);
+        serial_format.bit_order = (order_enum)sym_format_msb.get_offset(0);

        persistent_memory::set_serial_format(serial_format);

@@ -38,8 +38,6 @@ class ModemSetupView : public View {
    std::string title() const override { return "Modem setup"; };

   private:
-    void update_freq(rf::Frequency f);
-
    Labels labels{
        {{2 * 8, 11 * 8}, "Baudrate:", Color::light_grey()},
        {{2 * 8, 13 * 8}, "Mark:      Hz", Color::light_grey()},
@@ -81,10 +79,25 @@ class ModemSetupView : public View {
        7,
        {}};

-    SymField sym_format{
+    SymField sym_format_data{
        {16 * 8, 22 * 8},
-        4,
-        SymField::SYMFIELD_DEF};
+        1,
+        "6789"};
+
+    SymField sym_format_parity{
+        {17 * 8, 22 * 8},
+        1,
+        "NEo"};
+
+    SymField sym_format_stop{
+        {18 * 8, 22 * 8},
+        1,
+        "012"};
+
+    SymField sym_format_msb{
+        {19 * 8, 22 * 8},
+        1,
+        "ML"};

    Button button_set_modem{
        {23 * 8, 6 * 8 - 4, 6 * 8, 24},
@@ -26,7 +26,6 @@
 #include "baseband_api.hpp"
 #include "hackrf_gpio.hpp"
 #include "portapack_shared_memory.hpp"
-#include "cpld_update.hpp"
 #include "ui_textentry.hpp"
 #include "string_format.hpp"

@@ -57,13 +56,23 @@ static msg_t ookthread_fn(void* arg) {
        v = (symbol < 2) ? 1 : 0;  // TX on for dot or dash, off for pause
        delay = morse_symbols[symbol];

-        gpio_og_tx.write(v);
+        if (hackrf_r9) {           // r9 has a common PIN 54 for MODE CONTROL TX / RX,  <=r6 has two independent MODE CONTROL pins (TX and RX)
+            gpio_r9_rx.write(!v);  // in hackrf r9 opposite logic "0" means tx , "1" rx = no tx)
+        } else {
+            gpio_og_tx.write(v);  // in hackrf <=r6, "1" means tx , "0" no tx.
+        }
+
        arg_c->on_tx_progress(i, false);

        chThdSleepMilliseconds(delay * arg_c->time_unit_ms);
    }

-    gpio_og_tx.write(0);  // Ensure TX is off
+    if (hackrf_r9) {          // r9 has a common PIN 54 for MODE CONTROL TX / RX,  <=r6 has two independent MODE CONTROL pins (TX and RX)
+        gpio_r9_rx.write(1);  // Hackrf_r9 , common pin,  rx="1" (we ensure TX is off)  / tx="0"
+    } else {
+        gpio_og_tx.write(0);  // Hackrf <=r6 independent TX / RX  pins ,now touching the tx pin ==> Ensure TX is off
+    }
+
    arg_c->on_tx_progress(0, true);
    chThdExit(0);

@@ -98,13 +107,8 @@ void MorseView::focus() {
 }

 MorseView::~MorseView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_morse", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit .
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void MorseView::paint(Painter&) {
@@ -123,15 +127,14 @@ bool MorseView::start_tx() {
    }

    progressbar.set_max(symbol_count);
-
-    transmitter_model.set_sampling_rate(1536000U);
-    transmitter_model.set_baseband_bandwidth(1750000);
+    // By experimental spectrum measurment, we left exactly same TX LPF settings as previous fw 1.7.4,  TX LPF= 1M75 (min).
+    transmitter_model.set_baseband_bandwidth(1'750'000);  // Min TX LPF .already tested in FM morse max tone 9,999k , max dev 150khz
    transmitter_model.enable();

-    if (modulation == CW) {
+    baseband::set_tones_config(transmitter_model.channel_bandwidth(), 0, symbol_count, false, false);
+
+    if (mode_cw) {
        ookthread = chThdCreateStatic(ookthread_wa, sizeof(ookthread_wa), NORMALPRIO + 10, ookthread_fn, this);
-    } else if (modulation == FM) {
-        baseband::set_tones_config(transmitter_model.channel_bandwidth(), 0, symbol_count, false, false);
    }

    return true;
@@ -140,8 +143,8 @@ bool MorseView::start_tx() {
 void MorseView::update_tx_duration() {
    uint32_t duration_ms;

-    time_unit_ms = 1200 / field_speed.value();
-    symbol_count = morse_encode(message, time_unit_ms, field_tone.value(), &time_units);
+    time_unit_ms = 1200 / speed;
+    symbol_count = morse_encode(message, time_unit_ms, tone, &time_units);

    if (symbol_count) {
        duration_ms = time_units * time_unit_ms;
@@ -182,7 +185,7 @@ void MorseView::on_loop_progress(const uint32_t progress, const bool done) {
 }

 void MorseView::set_foxhunt(size_t i) {
-    message = foxhunt_codes[i];
+    message = foxhunt_codes[i - 1];
    buffer = message.c_str();
    text_message.set(message);
    update_tx_duration();
@@ -195,7 +198,7 @@ MorseView::MorseView(

    add_children({&labels,
                  &checkbox_foxhunt,
-                  &options_foxhunt,
+                  &field_foxhunt,
                  &field_speed,
                  &field_tone,
                  &options_modulation,
@@ -206,54 +209,55 @@ MorseView::MorseView(
                  &progressbar,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_morse", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    // Default settings
-    field_speed.set_value(15);                 // 15wps
-    field_tone.set_value(700);                 // 700Hz FM tone
-    options_modulation.set_selected_index(0);  // CW mode
-    options_loop.set_selected_index(0);        // Off
+    field_speed.set_value(speed);
+    field_tone.set_value(tone);
+    options_modulation.set_by_value(mode_cw);
+    options_loop.set_by_value(loop);
+    checkbox_foxhunt.set_value(foxhunt_mode);
+    field_foxhunt.set_value(foxhunt_code);

    checkbox_foxhunt.on_select = [this](Checkbox&, bool value) {
        foxhunt_mode = value;

        if (foxhunt_mode)
-            set_foxhunt(options_foxhunt.selected_index_value());
+            set_foxhunt(foxhunt_code);
    };

-    options_foxhunt.on_change = [this](size_t i, int32_t) {
+    field_foxhunt.on_change = [this](int32_t value) {
+        foxhunt_code = value;
+
        if (foxhunt_mode)
-            set_foxhunt(i);
+            set_foxhunt(foxhunt_code);
    };

-    options_modulation.on_change = [this](size_t i, int32_t) {
-        modulation = (modulation_t)i;
-    };
-
-    options_loop.on_change = [this](size_t i, uint32_t n) {
+    options_modulation.on_change = [this](size_t i, int32_t value) {
        (void)i;  // avoid unused warning
-        loop = n;
+        mode_cw = (bool)value;
    };

-    field_speed.on_change = [this](int32_t) {
+    options_loop.on_change = [this](size_t i, uint32_t value) {
+        (void)i;  // avoid unused warning
+        loop = value;
+    };
+
+    field_speed.on_change = [this](int32_t value) {
+        speed = value;
        update_tx_duration();
    };

+    field_tone.on_change = [this](int32_t value) {
+        tone = value;
+    };
+
    button_message.on_select = [this, &nav](Button&) {
        this->on_set_text(nav);
    };

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            receiver_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -28,6 +28,7 @@
 #include "ui_navigation.hpp"
 #include "ui_transmitter.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "portapack.hpp"
 #include "message.hpp"
 #include "volume.hpp"
@@ -64,19 +65,33 @@ class MorseView : public View {

   private:
    NavigationView& nav_;
-    std::string buffer{"PORTAPACK"};
    std::string message{};
    uint32_t time_units{0};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
-
-    enum modulation_t {
-        CW = 0,
-        FM = 1
+    TxRadioState radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        1536000 /* sampling rate */
    };
-    modulation_t modulation{CW};
+
+    std::string buffer{"PORTAPACK"};
+    bool mode_cw{true};
+    bool foxhunt_mode{false};
+    uint32_t foxhunt_code{1};
+    uint32_t speed{15};
+    uint32_t tone{700};
+    app_settings::SettingsManager settings_{
+        "tx_morse",
+        app_settings::Mode::TX,
+        {
+            {"message"sv, &buffer},
+            {"foxhunt"sv, &foxhunt_mode},
+            {"foxhunt_code"sv, &foxhunt_code},
+            {"speed"sv, &speed},
+            {"tone"sv, &tone},
+            {"mode_cw"sv, &mode_cw},
+            {"loop"sv, &loop},
+        }};

    bool start_tx();
    void update_tx_duration();
@@ -85,7 +100,6 @@ class MorseView : public View {

    Thread* ookthread{nullptr};
    Thread* loopthread{nullptr};
-    bool foxhunt_mode{false};
    bool run{false};

    Labels labels{
@@ -99,20 +113,12 @@ class MorseView : public View {
        {4 * 8, 16},
        8,
        "Foxhunt:"};
-    OptionsField options_foxhunt{
+    NumberField field_foxhunt{
        {17 * 8, 16 + 4},
-        7,
-        {{"1 (MOE)", 0},
-         {"2 (MOI)", 1},
-         {"3 (MOS)", 2},
-         {"4 (MOH)", 3},
-         {"5 (MO5)", 4},
-         {"6 (MON)", 5},
-         {"7 (MOD)", 6},
-         {"8 (MOB)", 7},
-         {"9 (MO6)", 8},
-         {"X (MO) ", 9},
-         {"T (S) ", 10}}};
+        2,
+        {1, 11},
+        1,
+        ' '};

    NumberField field_speed{
        {10 * 8, 6 * 8},
@@ -131,8 +137,8 @@ class MorseView : public View {
    OptionsField options_modulation{
        {15 * 8, 10 * 8},
        2,
-        {{"CW", 0},
-         {"FM", 1}}};
+        {{"CW", true},
+         {"FM", false}}};

    OptionsField options_loop{
        {9 * 8, 12 * 8},
@@ -21,6 +21,7 @@
 */

 #include "ui_numbers.hpp"
+#include "ui_styles.hpp"
 #include "string_format.hpp"

 #include "portapack.hpp"
@@ -38,7 +39,7 @@ namespace ui {

 void NumbersStationView::focus() {
    if (file_error)
-        nav_.display_modal("No voices", "No valid voices found in\nthe /numbers directory.", ABORT, nullptr);
+        nav_.display_modal("No voices", "No valid voices found in\nthe /numbers directory.", ABORT);
    else
        button_exit.focus();
 }
@@ -75,7 +76,7 @@ void NumbersStationView::prepare_audio() {
                return;
            }

-            code = symfield_code.get_sym(code_index);
+            code = symfield_code.get_offset(code_index);

            if (code >= 10) {
                memset(audio_buffer, 0, 1024);
@@ -129,9 +130,7 @@ void NumbersStationView::start_tx() {

    prepare_audio();

-    transmitter_model.set_sampling_rate(1536000U);
    transmitter_model.set_rf_amp(true);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    baseband::set_audiotx_data(
@@ -146,7 +145,7 @@ void NumbersStationView::on_tick_second() {
    armed_blink = not armed_blink;

    if (armed_blink)
-        check_armed.set_style(&style_red);
+        check_armed.set_style(&Styles::red);
    else
        check_armed.set_style(&style());

@@ -154,14 +153,12 @@ void NumbersStationView::on_tick_second() {
 }

 void NumbersStationView::on_voice_changed(size_t index) {
-    std::string code_list = "";
+    std::string code_list;

    for (const auto& wavs : voices[index].available_wavs)
        code_list += wavs.code;

-    for (uint32_t c = 0; c < 25; c++)
-        symfield_code.set_symbol_list(c, code_list);
-
+    symfield_code.set_symbol_list(code_list);
    current_voice = &voices[index];
 }

@@ -267,17 +264,17 @@ NumbersStationView::NumbersStationView(
    };

    // DEBUG
-    symfield_code.set_sym(0, 10);
-    symfield_code.set_sym(1, 3);
-    symfield_code.set_sym(2, 4);
-    symfield_code.set_sym(3, 11);
-    symfield_code.set_sym(4, 6);
-    symfield_code.set_sym(5, 1);
-    symfield_code.set_sym(6, 9);
-    symfield_code.set_sym(7, 7);
-    symfield_code.set_sym(8, 8);
-    symfield_code.set_sym(9, 0);
-    symfield_code.set_sym(10, 12);  // End
+    symfield_code.set_offset(0, 10);
+    symfield_code.set_offset(1, 3);
+    symfield_code.set_offset(2, 4);
+    symfield_code.set_offset(3, 11);
+    symfield_code.set_offset(4, 6);
+    symfield_code.set_offset(5, 1);
+    symfield_code.set_offset(6, 9);
+    symfield_code.set_offset(7, 7);
+    symfield_code.set_offset(8, 8);
+    symfield_code.set_offset(9, 0);
+    symfield_code.set_offset(10, 12);  // End

    /*
        rtc::RTC datetime;
@@ -34,6 +34,7 @@
 #include "message.hpp"
 #include "file.hpp"
 #include "io_wave.hpp"
+#include "radio_state.hpp"

 namespace ui {

@@ -54,6 +55,12 @@ class NumbersStationView : public View {
   private:
    NavigationView& nav_;

+    TxRadioState radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        1536000 /* sampling rate */
+    };
+
    // Sequencing state machine
    enum segments {
        IDLE = 0,
@@ -136,16 +143,19 @@ class NumbersStationView : public View {
    SymField symfield_code{
        {1 * 8, 10 * 8},
        25,
-        SymField::SYMFIELD_DEF};
+        SymField::Type::Custom};

    Checkbox check_armed{
        {2 * 8, 13 * 16},
        5,
        "Armed"};
-    /*Button button_tx_now {
-                { 18 * 8, 13 * 16, 10 * 8, 32 },
-                "TX now"
-        };*/
+
+    /*
+    Button button_tx_now {
+        { 18 * 8, 13 * 16, 10 * 8, 32 },
+        "TX now"};
+    */
+
    Button button_exit{
        {21 * 8, 16 * 16, 64, 32},
        "Exit"};
@@ -77,11 +77,9 @@ void NuoptixView::transmit(bool setup) {
            timecode = number_timecode.value();
        }

-        transmitter_model.set_sampling_rate(1536000U);
        transmitter_model.set_rf_amp(true);
        transmitter_model.set_lna(40);
        transmitter_model.set_vga(40);
-        transmitter_model.set_baseband_bandwidth(1750000);
        transmitter_model.enable();

        dtmf_message[0] = '*';  // "Pre-tone for restart" method #1
@@ -156,9 +154,9 @@ NuoptixView::NuoptixView(
    number_timecode.set_value(1);

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            receiver_model.set_tuning_frequency(f);
+            transmitter_model.target_frequency(f);
        };
    };

@@ -33,6 +33,7 @@
 #include "message.hpp"
 #include "volume.hpp"
 #include "audio.hpp"
+#include "radio_state.hpp"

 #define NUOPTIX_TONE_LENGTH ((TONES_SAMPLERATE * 0.049) - 1)  // 49ms

@@ -54,9 +55,14 @@ class NuoptixView : public View {
        IMPROVISE
    };

+    TxRadioState radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        1536000 /* sampling rate */
+    };
+
    tx_modes tx_mode{IDLE};

-    void on_tuning_frequency_changed(rf::Frequency f);
    void transmit(bool setup);
    void on_tx_progress(const uint32_t progress, const bool done);

@@ -2,6 +2,7 @@
 * Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 * Copyleft  (ↄ) 2022 NotPike
+ * Copyright (C) 2023 Kyle Reed, zxkmm
 *
 * This file is part of PortaPack.
 *
@@ -22,235 +23,342 @@
 */

 #include "ui_playlist.hpp"
-#include "string_format.hpp"
-
-#include "ui_fileman.hpp"
-#include "io_file.hpp"

 #include "baseband_api.hpp"
+#include "convert.hpp"
+#include "file_reader.hpp"
+#include "io_file.hpp"
+#include "io_convert.hpp"
+#include "oversample.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "string_format.hpp"
+#include "ui_fileman.hpp"
+#include "utility.hpp"
+
 #include <unistd.h>
 #include <fstream>

 using namespace portapack;
+namespace fs = std::filesystem;
+
+/* TODO
+ * - Should frequency overrides be saved in the playlist?
+ * - Start playing from current track (vs start over)?
+ */

 namespace ui {

-void PlaylistView::set_ready() {
-    ready_signal = true;
-}
+// TODO: consolidate extesions into a shared header?
+static const fs::path ppl_ext = u".PPL";

-void PlaylistView::load_file(std::filesystem::path playlist_path) {
+void PlaylistView::load_file(const fs::path& playlist_path) {
    File playlist_file;
-
    auto error = playlist_file.open(playlist_path.string());
-    if (!error.is_valid()) {
-        std::string line;
-        char one_char[1];
-        for (size_t pointer = 0; pointer < playlist_file.size(); pointer++) {
-            playlist_file.seek(pointer);
-            playlist_file.read(one_char, 1);
-            if ((int)one_char[0] >= ' ') {
-                line += one_char[0];
-            } else if (one_char[0] == '\n') {
-                total_tracks++;
-                txtline_process(line);
-                line.clear();
-            }
-        }
-        if (line.length() > 0) {
-            total_tracks++;
-            txtline_process(line);
-        }
+
+    if (error)
+        return;
+
+    auto reader = FileLineReader(playlist_file);
+    for (const auto& line : reader) {
+        if (line.length() == 0 || line[0] == '#')
+            continue;  // Empty or comment line.
+
+        auto cols = split_string(line, ',');
+        auto entry = load_entry(trim(cols[0]));
+
+        if (!entry)
+            continue;
+
+        // Read optional delay value.
+        if (cols.size() > 1)
+            parse_int(cols[1], entry->ms_delay);
+
+        playlist_db_.emplace_back(*std::move(entry));
    }
-    playlist_masterdb = playlist_db;
-    return;
 }

-void PlaylistView::txtline_process(std::string& line) {
-    playlist_entry new_item;
-    rf::Frequency f;
-    size_t previous = 0;
-    size_t current = line.find(',');
-    std::string freqs = line.substr(0, current);
-    previous = current + 1;
-    current = line.find(',', previous);
-    std::string file = line.substr(previous, current - previous);
-    previous = current + 1;
-    current = line.find(',', previous);
-    uint32_t sample_rate = strtoll(line.substr(previous).c_str(), nullptr, 10);
+Optional<PlaylistView::playlist_entry> PlaylistView::load_entry(fs::path&& path) {
+    File capture_file;

-    f = strtoll(freqs.c_str(), nullptr, 0);
-    new_item.replay_frequency = f;
-    new_item.replay_file = "/" + file;
-    new_item.sample_rate = sample_rate;
-    new_item.next_delay = 0;
+    auto error = capture_file.open(path);
+    if (error)
+        return {};

-    playlist_db.push_back(std::move(new_item));
+    // Read metafile if it exists.
+    auto metadata_path = get_metadata_path(path);
+    auto metadata = read_metadata_file(metadata_path);
+
+    // If no metadata found, fallback to the TX frequency.
+    if (!metadata)
+        metadata = {transmitter_model.target_frequency(), 500'000};
+
+    return playlist_entry{
+        std::move(path),
+        *metadata,
+        capture_file.size(),
+        0u};
 }

-void PlaylistView::on_file_changed(std::filesystem::path new_file_path, rf::Frequency replay_frequency, uint32_t replay_sample_rate) {
-    File data_file;
-    // Get file size
-    auto data_open_error = data_file.open("/" + new_file_path.string());
-    if (!data_open_error.is_valid()) {
-        track_number++;
-    } else if (data_open_error.is_valid()) {
-        file_error("C16 file\n" + new_file_path.string() + "\nread error.");
+void PlaylistView::on_file_changed(const fs::path& new_file_path) {
+    stop();
+
+    current_index_ = 0;
+    playlist_path_ = new_file_path;
+    playlist_db_.clear();
+    load_file(playlist_path_);
+
+    update_ui();
+
+    // TODO: fix in UI framework with 'try_focus()'?
+    // Hack around focus getting called by ctor before parent is set.
+    if (parent())
+        button_play.focus();
+}
+
+void PlaylistView::open_file(bool prompt_save) {
+    if (playlist_dirty_ && prompt_save) {
+        nav_.display_modal(
+            "Save?", "Save changes?", YESNO,
+            [this](bool choice) {
+                if (choice)
+                    save_file(false);
+            });
+        nav_.set_on_pop([this]() { open_file(false); });
        return;
    }

-    file_path = new_file_path;
-    field_frequency.set_value(replay_frequency);
-
-    sample_rate = replay_sample_rate;
-
-    text_sample_rate.set(unit_auto_scale(sample_rate, 3, 0) + "Hz");
-
-    auto file_size = data_file.size();
-    auto duration = (file_size * 1000) / (2 * 2 * sample_rate);
-
-    progressbar.set_max(file_size);
-    text_filename.set(file_path.filename().string().substr(0, 12));
-    text_duration.set(to_string_time_ms(duration));
-    // text_track.set(std::to_string(track_number) + "/" + std::to_string(total_tracks));
-
-    button_play.focus();
+    auto open_view = nav_.push<FileLoadView>(".PPL");
+    open_view->push_dir(u"PLAYLIST");
+    open_view->on_changed = [this](fs::path new_file_path) {
+        on_file_changed(new_file_path);
+    };
 }

-void PlaylistView::on_tx_progress(const uint32_t progress) {
-    progressbar.set_value(progress);
+void PlaylistView::save_file(bool show_dialogs) {
+    if (!playlist_dirty_ || playlist_path_.empty())
+        return;
+
+    ensure_directory(playlist_path_.parent_path());
+
+    File playlist_file;
+    auto error = playlist_file.create(playlist_path_.string());
+
+    if (error) {
+        if (show_dialogs)
+            nav_.display_modal(
+                "Save Error",
+                "Could not save file\n" + playlist_path_.string());
+        return;
+    }
+
+    for (const auto& entry : playlist_db_) {
+        playlist_file.write_line(
+            entry.path.string() + "," +
+            to_string_dec_uint(entry.ms_delay));
+    }
+
+    playlist_dirty_ = false;
+
+    if (show_dialogs)
+        nav_.display_modal(
+            "Save",
+            "Saved playlist\n" + playlist_path_.string());
 }

-void PlaylistView::focus() {
-    button_open.focus();
+void PlaylistView::add_entry(fs::path&& path) {
+    if (playlist_path_.empty()) {
+        playlist_path_ = next_filename_matching_pattern(u"/PLAYLIST/PLAY_????.PPL");
+
+        // Hack around focus getting called by ctor before parent is set.
+        if (parent())
+            button_play.focus();
+    }
+
+    auto entry = load_entry(std::move(path));
+    if (entry) {
+        playlist_db_.emplace_back(*std::move(entry));
+        current_index_ = playlist_db_.size() - 1;
+        playlist_dirty_ = true;
+    }
+
+    update_ui();
 }

-void PlaylistView::file_error(std::string error_message) {
-    nav_.display_modal("Error", "Error for \n" + file_path.string() + "\n" + error_message);
+void PlaylistView::delete_entry() {
+    if (playlist_db_.empty())
+        return;
+
+    // Ugh, the STL is gross.
+    playlist_db_.erase(playlist_db_.begin() + current_index_);
+
+    if (current_index_ > 0)
+        --current_index_;
+
+    playlist_dirty_ = true;
+    update_ui();
+}
+
+void PlaylistView::show_file_error(const fs::path& path, const std::string& message) {
+    nav_.display_modal("Error", "Error opening file \n" + path.string() + "\n" + message);
+}
+
+PlaylistView::playlist_entry* PlaylistView::current() {
+    return playlist_db_.empty() ? nullptr : &playlist_db_[current_index_];
 }

 bool PlaylistView::is_active() const {
-    return (bool)replay_thread;
+    return replay_thread_ != nullptr;
 }

-bool PlaylistView::loop() const {
-    return (bool)playlist_db.size();
+bool PlaylistView::at_end() const {
+    return current_index_ >= playlist_db_.size();
 }

 void PlaylistView::toggle() {
-    if (is_active()) {
-        stop(false);
-        total_tracks = 0;
-        track_number = 0;
-        playlist_db.clear();
-        playlist_masterdb.clear();
-    } else {
-        total_tracks = 0;
-        track_number = 0;
-        playlist_db.clear();
-        playlist_masterdb.clear();
-        load_file(now_play_list_file);
-        if (!playlist_db.empty()) {
-            start();
-        }
-    }
+    if (is_active())
+        stop();
+    else
+        start();
 }

 void PlaylistView::start() {
-    stop(false);
+    if (playlist_db_.empty())
+        return;  // Nothing to do.

-    playlist_entry item = playlist_db.front();
-    playlist_db.pop_front();
-    //	playlist_entry item = playlist_db[0];
-    //	for (playlist_entry item : playlist_db) {
-    //	file_path = item.replay_file;
-    //	rf::Frequency replay_frequency = strtoll(item.replay_frequency.c_str(),nullptr,10);
-    on_file_changed(item.replay_file, item.replay_frequency, item.sample_rate);
-    on_target_frequency_changed(item.replay_frequency);
+    current_index_ = 0u;
+    send_current_track();
+}

-    std::unique_ptr<stream::Reader> reader;
+/* Advance to the next track in the playlist. */
+bool PlaylistView::next_track() {
+    ++current_index_;

-    auto p = std::make_unique<FileReader>();
-    auto open_error = p->open(file_path);
-    if (open_error.is_valid()) {
-        file_error("Illegal grammar");
-        return;  // Fixes TX bug if there's a file error
-    } else {
-        reader = std::move(p);
+    // Reset to the 0 once at the end to prevent current_index_
+    // from being outside the bounds of playlist_db_ when painting.
+    if (at_end()) {
+        current_index_ = 0;
+        return check_loop.value();  // Keep going if looping.
    }

-    if (reader) {
-        button_play.set_bitmap(&bitmap_stop);
-        baseband::set_sample_rate(sample_rate * 8);
+    return true;
+}

-        replay_thread = std::make_unique<ReplayThread>(
-            std::move(reader),
-            read_size, buffer_count,
-            &ready_signal,
-            [](uint32_t return_code) {
-                ReplayThreadDoneMessage message{return_code};
-                EventDispatcher::send_message(message);
-            });
+/* Transmits the current_entry_ */
+void PlaylistView::send_current_track() {
+    // Prepare to send a file.
+    replay_thread_.reset();
+    transmitter_model.disable();
+    ready_signal_ = false;
+
+    if (!current())
+        return;
+
+    // TODO: Use a timer so the UI isn't frozen.
+    if (current()->ms_delay > 0)
+        chThdSleepMilliseconds(current()->ms_delay);
+
+    // Open the sample file to send.
+    auto reader = std::make_unique<FileConvertReader>();
+    auto error = reader->open(current()->path);
+    if (error) {
+        show_file_error(current()->path, "Can't open file to send.");
+        return;
    }

-    transmitter_model.set_sampling_rate(sample_rate * 8);
-    transmitter_model.set_baseband_bandwidth(baseband_bandwidth);
+    // Update the sample rate in proc_replay baseband.
+    baseband::set_sample_rate(current()->metadata.sample_rate,
+                              get_oversample_rate(current()->metadata.sample_rate));
+
+    // ReplayThread starts immediately on construction; must be set before creating.
+    transmitter_model.set_target_frequency(current()->metadata.center_frequency);
+    transmitter_model.set_sampling_rate(get_actual_sample_rate(current()->metadata.sample_rate));
+    transmitter_model.set_baseband_bandwidth(current()->metadata.sample_rate <= 500'000 ? 1'750'000 : 2'500'000);  // TX LPF min 1M75 for SR <=500K, and  2M5 (by experimental test) for SR >500K
    transmitter_model.enable();
+
+    // Reset the transmit progress bar.
+    progressbar_transmit.set_value(0);
+
+    // Use the ReplayThread class to send the data.
+    replay_thread_ = std::make_unique<ReplayThread>(
+        std::move(reader),
+        /* read_size */ 0x4000,
+        /* buffer_count */ 3,
+        &ready_signal_,
+        [](uint32_t return_code) {
+            ReplayThreadDoneMessage message{return_code};
+            EventDispatcher::send_message(message);
+        });
+
+    // Now it's sending, update the UI.
+    update_ui();
 }

-void PlaylistView::stop(const bool do_loop) {
-    if (is_active()) {
-        replay_thread.reset();
-    }
+void PlaylistView::stop() {
+    // This terminates the underlying chThread.
+    replay_thread_.reset();
+    transmitter_model.disable();

-    // TODO: the logic here could be more beautiful but maybe they are all same for compiler anyway....
-    // Notes of the logic here in case if it needed to be changed in the future:
-    // 1. check_loop.value() is for the LOOP checkbox
-    // 2. do_loop is a part of the replay thread, not a user - control thing.
-    // 3. when (total_tracks > track_number) is true, it means that the current track is not the last track.
-    // Thus, (do_loop && (total_tracks != track_number)) is for the case when the start() func were called with true AND not the last track.
-    // Which means it do loop until the last track.
-
-    if (check_loop.value()) {
-        if (do_loop) {
-            if (playlist_db.size() > 0) {
-                start();
-            } else {
-                playlist_db = playlist_masterdb;
-                start();
-            }
-        } else {
-            transmitter_model.disable();
-            button_play.set_bitmap(&bitmap_play);
-        }
-    } else if (!check_loop.value()) {
-        if (do_loop && (total_tracks > track_number)) {
-            if (playlist_db.size() > 0) {
-                start();
-            } else {
-                playlist_db = playlist_masterdb;
-                start();
-            }
-        } else {
-            transmitter_model.disable();
-            button_play.set_bitmap(&bitmap_play);
-        }
-    }
-
-    ready_signal = false;
+    // Reset the transmit progress bar.
+    progressbar_transmit.set_value(0);
+    update_ui();
 }

-void PlaylistView::handle_replay_thread_done(const uint32_t return_code) {
+void PlaylistView::update_ui() {
+    if (playlist_db_.empty()) {
+        text_filename.set("-");
+        text_sample_rate.set("-");
+        text_duration.set("-");
+
+        if (playlist_path_.empty())
+            text_track.set("Open playlist or add capture.");
+        else
+            text_track.set(playlist_path_.filename().string());
+
+        progressbar_track.set_value(0);
+        progressbar_track.set_max(0);
+        progressbar_transmit.set_max(0);
+
+    } else {
+        chDbgAssert(!at_end(), "update_ui #1", "current_index_ invalid");
+
+        text_filename.set(current()->path.filename().string());
+        text_sample_rate.set(unit_auto_scale(current()->metadata.sample_rate, 3, (current()->metadata.sample_rate > 1000000) ? 2 : 0) + "Hz");
+
+        uint8_t sample_size = capture_file_sample_size(current()->path);
+        auto duration = ms_duration(current()->file_size, current()->metadata.sample_rate, sample_size);
+        text_duration.set(to_string_time_ms(duration));
+        field_frequency.set_value(current()->metadata.center_frequency);
+
+        text_track.set(
+            to_string_dec_uint(current_index_ + 1) + "/" +
+            to_string_dec_uint(playlist_db_.size()) + " " +
+            playlist_path_.filename().string());
+
+        progressbar_track.set_max(playlist_db_.size() - 1);
+        progressbar_track.set_value(current_index_);
+        progressbar_transmit.set_max(current()->file_size * sizeof(complex16_t) / sample_size);
+    }
+
+    button_play.set_bitmap(is_active() ? &bitmap_stop : &bitmap_play);
+}
+
+void PlaylistView::on_tx_progress(uint32_t progress) {
+    progressbar_transmit.set_value(progress);
+}
+
+void PlaylistView::handle_replay_thread_done(uint32_t return_code) {
    if (return_code == ReplayThread::END_OF_FILE) {
-        stop(true);
-    } else if (return_code == ReplayThread::READ_ERROR) {
-        stop(false);
-        file_error("Replay thread read error");
+        if (next_track()) {
+            send_current_track();
+            return;
+        }
    }

-    progressbar.set_value(0);
+    if (return_code == ReplayThread::READ_ERROR)
+        show_file_error(current()->path, "Replay read failed.");
+
+    stop();
 }

 PlaylistView::PlaylistView(
@@ -259,47 +367,102 @@ PlaylistView::PlaylistView(
    baseband::run_image(portapack::spi_flash::image_tag_replay);

    add_children({
-        &button_open,
        &text_filename,
        &text_sample_rate,
        &text_duration,
-        &progressbar,
+        &progressbar_track,
+        &progressbar_transmit,
        &field_frequency,
-        &tx_view,  // this handles now the previous rfgain, rfamp
+        &tx_view,
        &check_loop,
        &button_play,
-        // &text_track,
-        // TODO: add track number
+        &text_track,
+        &button_prev,
+        &button_add,
+        &button_delete,
+        &button_open,
+        &button_save,
+        &button_next,
        &waterfall,
    });

-    field_frequency.set_value(target_frequency());
-    field_frequency.set_step(receiver_model.frequency_step());
+    ensure_directory(u"PLAYLIST");
+    waterfall.show_audio_spectrum_view(false);
+
+    field_frequency.set_value(100'000'000);
    field_frequency.on_change = [this](rf::Frequency f) {
-        this->on_target_frequency_changed(f);
+        if (current())
+            current()->metadata.center_frequency = f;
    };
-    field_frequency.on_edit = [this, &nav]() {
-        // TODO: Provide separate modal method/scheme?
-        auto new_view = nav.push<FrequencyKeypadView>(this->target_frequency());
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->on_target_frequency_changed(f);
-            this->field_frequency.set_value(f);
+    field_frequency.on_edit = [this]() {
+        auto freq_view = nav_.push<FrequencyKeypadView>(field_frequency.value());
+        freq_view->on_changed = [this](rf::Frequency f) {
+            field_frequency.set_value(f);
        };
    };

-    field_frequency.set_step(5000);
-
    button_play.on_select = [this](ImageButton&) {
-        this->toggle();
+        toggle();
    };

-    button_open.on_select = [this, &nav](Button&) {
-        auto open_view = nav.push<FileLoadView>(".PPL");
-        open_view->on_changed = [this](std::filesystem::path new_file_path) {
-            now_play_list_file = new_file_path;
-            load_file(new_file_path);
+    button_add.on_select = [this, &nav]() {
+        if (is_active())
+            return;
+        auto open_view = nav_.push<FileLoadView>(".C*");
+        open_view->push_dir(u"CAPTURES");
+        open_view->on_changed = [this](fs::path path) {
+            add_entry(std::move(path));
        };
    };
+
+    button_delete.on_select = [this, &nav]() {
+        if (is_active())
+            return;
+        delete_entry();
+    };
+
+    button_open.on_select = [this, &nav]() {
+        if (is_active())
+            stop();
+        open_file();
+    };
+
+    button_save.on_select = [this]() {
+        if (is_active())
+            stop();
+        save_file();
+    };
+
+    button_prev.on_select = [this]() {
+        if (is_active())
+            return;
+        --current_index_;
+        if (at_end())
+            current_index_ = playlist_db_.size() - 1;
+        update_ui();
+    };
+
+    button_next.on_select = [this]() {
+        if (is_active())
+            return;
+        ++current_index_;
+        if (at_end())
+            current_index_ = 0;
+        update_ui();
+    };
+
+    update_ui();
+}
+
+PlaylistView::PlaylistView(
+    NavigationView& nav,
+    const fs::path& path)
+    : PlaylistView(nav) {
+    auto ext = path.extension();
+    if (path_iequal(ext, ppl_ext))
+        on_file_changed(path);
+    else if (is_cxx_capture_file(path))
+        add_entry(fs::path{path});
 }

 PlaylistView::~PlaylistView() {
@@ -307,33 +470,26 @@ PlaylistView::~PlaylistView() {
    baseband::shutdown();
 }

+void PlaylistView::set_parent_rect(Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+
+    ui::Rect waterfall_rect{
+        0, header_height, new_parent_rect.width(),
+        new_parent_rect.height() - header_height};
+    waterfall.set_parent_rect(waterfall_rect);
+}
+
+void PlaylistView::focus() {
+    if (playlist_path_.empty())
+        button_add.focus();
+    else
+        button_play.focus();
+}
+
 void PlaylistView::on_hide() {
-    stop(false);
-    // TODO: Terrible kludge because widget system doesn't notify Waterfall that
-    // it's being shown or hidden.
+    stop();
    waterfall.on_hide();
    View::on_hide();
 }

-void PlaylistView::set_parent_rect(const Rect new_parent_rect) {
-    View::set_parent_rect(new_parent_rect);
-
-    const ui::Rect waterfall_rect{0, header_height, new_parent_rect.width(),
-                                  new_parent_rect.height() - header_height};
-    waterfall.set_parent_rect(waterfall_rect);
-}
-
-void PlaylistView::on_target_frequency_changed(rf::Frequency f) {
-    set_target_frequency(f);
-}
-
-void PlaylistView::set_target_frequency(const rf::Frequency new_value) {
-    persistent_memory::set_tuned_frequency(new_value);
-    ;
-}
-
-rf::Frequency PlaylistView::target_frequency() const {
-    return persistent_memory::tuned_frequency();
-}
-
 } /* namespace ui */
@@ -1,6 +1,7 @@
 /*
 * Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 Kyle Reed, zxkmm
 *
 * This file is part of PortaPack.
 *
@@ -20,144 +21,190 @@
 * Boston, MA 02110-1301, USA.
 */

-#define SHORT_UI true
-#define NORMAL_UI false
-
-#include "ui_widget.hpp"
+#include "app_settings.hpp"
+#include "bitmap.hpp"
+#include "file.hpp"
+#include "metadata_file.hpp"
+#include "radio_state.hpp"
+#include "replay_thread.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
-#include "replay_thread.hpp"
 #include "ui_spectrum.hpp"
+#include "ui_transmitter.hpp"
+#include "ui_widget.hpp"

 #include <string>
 #include <memory>
-#include <deque>
-#include "ui_transmitter.hpp"
+#include <vector>

 namespace ui {

 class PlaylistView : public View {
   public:
    PlaylistView(NavigationView& nav);
-
+    PlaylistView(NavigationView& nav, const std::filesystem::path& path);
    ~PlaylistView();

+    // Following 2 called by 'NavigationView::update_view' after view is created.
+    void set_parent_rect(Rect new_parent_rect) override;
+    void focus() override;
    void on_hide() override;

-    void set_parent_rect(const Rect new_parent_rect) override;
-
-    void focus() override;
-
-    std::string title() const override { return "Playlist"; };
+    std::string title() const override { return "Replay"; };

   private:
    NavigationView& nav_;
+    TxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "tx_playlist", app_settings::Mode::TX};

-    static constexpr ui::Dim header_height = 3 * 16;
+    // More header == less spectrum view.
+    static constexpr ui::Dim header_height = 6 * 16;

    struct playlist_entry {
-        rf::Frequency replay_frequency{0};
-        std::string replay_file{};
-        uint32_t sample_rate{};
-        uint32_t next_delay{};
+        std::filesystem::path path{};
+        capture_metadata metadata{};
+        File::Size file_size{};
+        uint32_t ms_delay{};
    };
-    std::deque<playlist_entry> playlist_db{};
-    std::deque<playlist_entry> playlist_masterdb{};
-    uint32_t sample_rate = 0;
-    int32_t tx_gain{47};
-    bool rf_amp{true};  // aux private var to store temporal, Replay App rf_amp user selection.
-    static constexpr uint32_t baseband_bandwidth = 2500000;
-    const size_t read_size{16384};
-    const size_t buffer_count{3};

-    void load_file(std::filesystem::path playlist_path);
-    void txtline_process(std::string&);
-    void on_file_changed(std::filesystem::path new_file_path, rf::Frequency replay_frequency, uint32_t replay_sample_rate);
-    void on_target_frequency_changed(rf::Frequency f);
-    void on_tx_progress(const uint32_t progress);
-    void set_target_frequency(const rf::Frequency new_value);
-    rf::Frequency target_frequency() const;
+    std::unique_ptr<ReplayThread> replay_thread_{};
+    bool ready_signal_{};  // Used to signal the ReplayThread.
+
+    size_t current_index_{0};
+    bool playlist_dirty_{};
+    std::vector<playlist_entry> playlist_db_{};
+    std::filesystem::path playlist_path_{};
+
+    void load_file(const std::filesystem::path& path);
+    Optional<playlist_entry> load_entry(std::filesystem::path&& path);
+    void on_file_changed(const std::filesystem::path& path);
+    void open_file(bool prompt_save = true);
+    void save_file(bool show_dialogs = true);
+    void add_entry(std::filesystem::path&& path);
+    void delete_entry();
+    void reset();
+    void show_file_error(
+        const std::filesystem::path& path,
+        const std::string& message);
+
+    playlist_entry* current();
+
+    bool is_active() const;
+    bool at_end() const;
+
    void toggle();
    void start();
-    void stop(const bool do_loop);
-    bool is_active() const;
-    bool loop() const;
-    void set_ready();
-    void handle_replay_thread_done(const uint32_t return_code);
-    void file_error(std::string error_message);
+    bool next_track();
+    void send_current_track();
+    void stop();

-    std::filesystem::path file_path{};
-    std::unique_ptr<ReplayThread> replay_thread{};
-    bool ready_signal{false};
-    size_t track_number{0};
-    size_t total_tracks{0};
-    std::filesystem::path now_play_list_file{};
+    void update_ui();

-    Button button_open{
-        {0 * 8, 0 * 16, 10 * 8, 2 * 16},
-        "Open file"};
+    /* There are called by Message handlers. */
+    void on_tx_progress(uint32_t progress);
+    void handle_replay_thread_done(uint32_t return_code);

    Text text_filename{
-        {11 * 8, 0 * 16, 12 * 8, 16},
-        "-"};
-    Text text_sample_rate{
-        {24 * 8, 0 * 16, 6 * 8, 16},
-        "-"};
-
-    Text text_duration{
-        {11 * 8, 1 * 16, 6 * 8, 16},
-        "-"};
-    ProgressBar progressbar{
-        {18 * 8, 1 * 16, 12 * 8, 16}};
+        {0 * 8, 0 * 16, 30 * 8, 16}};

    FrequencyField field_frequency{
-        {0 * 8, 2 * 16},
-    };
+        {0 * 8, 1 * 16}};
+
+    Text text_sample_rate{
+        {10 * 8, 1 * 16, 7 * 8, 16}};
+
+    ProgressBar progressbar_track{
+        {18 * 8, 1 * 16, 12 * 8, 8 + 1}};
+
+    // (-1) to overlap with progressbar_track so there's
+    // only 1 pixel between them instead of 2.
+    ProgressBar progressbar_transmit{
+        {18 * 8, 3 * 8 - 1, 12 * 8, 8}};
+
+    Text text_duration{
+        {0 * 8, 2 * 16, 5 * 8, 16}};
+
+    // TODO: delay duration field.

    TransmitterView2 tx_view{
-        // new handling of NumberField field_rfgain, NumberField field_rfamp
-        74, 1 * 8, SHORT_UI  // x(columns), y (line) position. (Used in Repay / GPS Simul / Play list App)
-                             //		10*8, 2*8, NORMAL_UI				// x(columns), y (line) position. (Used in Mic App)
-    };
+        {11 * 8, 2 * 16},
+        /*short_ui*/ true};

    Checkbox check_loop{
        {21 * 8, 2 * 16},
        4,
        "Loop",
        true};
+
    ImageButton button_play{
        {28 * 8, 2 * 16, 2 * 8, 1 * 16},
        &bitmap_play,
        Color::green(),
        Color::black()};
-    // TODO: add track number
-    // Text text_track{
-    //     {18 * 8, 1 * 16, 12 * 8, 16},
-    //     "0/0"};

-    spectrum::WaterfallWidget waterfall{};
+    Text text_track{
+        {0 * 8, 3 * 16, 30 * 8, 16}};
+
+    NewButton button_prev{
+        {2 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_arrow_left,
+        Color::dark_grey()};
+
+    NewButton button_next{
+        {6 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_arrow_right,
+        Color::dark_grey()};
+
+    NewButton button_add{
+        {11 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_new_file,
+        Color::orange()};
+
+    NewButton button_delete{
+        {15 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_delete,
+        Color::orange()};
+
+    NewButton button_open{
+        {20 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_load,
+        Color::dark_blue()};
+
+    NewButton button_save{
+        {24 * 8, 4 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_save,
+        Color::dark_blue()};
+
+    spectrum::WaterfallView waterfall{};

    MessageHandlerRegistration message_handler_replay_thread_error{
        Message::ID::ReplayThreadDone,
-        [this](const Message* const p) {
-            const auto message = *reinterpret_cast<const ReplayThreadDoneMessage*>(p);
-            this->handle_replay_thread_done(message.return_code);
+        [this](const Message* p) {
+            auto message = *reinterpret_cast<const ReplayThreadDoneMessage*>(p);
+            handle_replay_thread_done(message.return_code);
        }};

    MessageHandlerRegistration message_handler_fifo_signal{
        Message::ID::RequestSignal,
-        [this](const Message* const p) {
-            const auto message = static_cast<const RequestSignalMessage*>(p);
+        [this](const Message* p) {
+            auto message = static_cast<const RequestSignalMessage*>(p);
            if (message->signal == RequestSignalMessage::Signal::FillRequest) {
-                this->set_ready();
+                ready_signal_ = true;
            }
        }};

    MessageHandlerRegistration message_handler_tx_progress{
        Message::ID::TXProgress,
-        [this](const Message* const p) {
-            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
-            this->on_tx_progress(message.progress);
+        [this](const Message* p) {
+            auto message = *reinterpret_cast<const TXProgressMessage*>(p);
+            on_tx_progress(message.progress);
        }};
 };

@@ -23,7 +23,6 @@
 #include "ui_pocsag_tx.hpp"

 #include "baseband_api.hpp"
-#include "cpld_update.hpp"
 #include "string_format.hpp"
 #include "ui_textentry.hpp"

@@ -39,13 +38,8 @@ void POCSAGTXView::focus() {
 }

 POCSAGTXView::~POCSAGTXView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_pocsag", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void POCSAGTXView::on_tx_progress(const uint32_t progress, const bool done) {
@@ -62,7 +56,7 @@ bool POCSAGTXView::start_tx() {
    pocsag::BitRate bitrate;
    std::vector<uint32_t> codewords;

-    address = field_address.value_dec_u32();
+    address = field_address.to_integer();
    if (address > 0x1FFFFFU) {
        nav_.display_modal("Bad address", "Address must be less\nthan 2097152.");
        return false;
@@ -85,11 +79,10 @@ bool POCSAGTXView::start_tx() {

    progressbar.set_max(total_frames);

-    transmitter_model.set_sampling_rate(2280000);
    transmitter_model.set_rf_amp(true);
-    transmitter_model.set_lna(40);
-    transmitter_model.set_vga(40);
-    transmitter_model.set_baseband_bandwidth(1750000);
+    transmitter_model.set_tx_gain(40);
+    // We left exactly same TX LPF settings as previous fw 1.7.4,  TX LPF= 1M75 (min). It is fine even in max FM dev. 150khz and 2400 bauds.
+    transmitter_model.set_baseband_bandwidth(1'750'000);  // Min TX LPF . Pocsag is NBFM , using BW channel 25khz or 12khz
    transmitter_model.enable();

    uint8_t* data_ptr = shared_memory.bb_data.data;
@@ -143,24 +136,10 @@ POCSAGTXView::POCSAGTXView(
                  &progressbar,
                  &tx_view});

-    // load app settings
-    auto rc = settings.load("tx_pocsag", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
-
    options_bitrate.set_selected_index(1);  // 1200bps
    options_type.set_selected_index(0);     // Address only

-    // TODO: set_value for whole symfield
-    uint32_t reload_address = persistent_memory::pocsag_last_address();
-    for (uint32_t c = 0; c < 7; c++) {
-        field_address.set_sym(6 - c, reload_address % 10);
-        reload_address /= 10;
-    }
+    field_address.set_value(persistent_memory::pocsag_last_address());

    options_type.on_change = [this](size_t, int32_t i) {
        if (i == 2)
@@ -172,9 +151,9 @@ POCSAGTXView::POCSAGTXView(
    };

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            transmitter_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -32,6 +32,7 @@
 #include "message.hpp"
 #include "transmitter_model.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "pocsag.hpp"

 using namespace pocsag;
@@ -58,6 +59,14 @@ class POCSAGTXView : public View {
    std::string message{};
    NavigationView& nav_;

+    TxRadioState radio_state_{
+        466175000 /* frequency */,
+        1750000 /* bandwidth */,
+        2280000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_pocsag", app_settings::Mode::TX};
+
    BCHCode BCH_code{
        {1, 0, 1, 0, 0, 1},
        5,
@@ -65,10 +74,6 @@ class POCSAGTXView : public View {
        21,
        2};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
-
    void on_set_text(NavigationView& nav);
    void on_tx_progress(const uint32_t progress, const bool done);
    bool start_tx();
@@ -90,8 +95,7 @@ class POCSAGTXView : public View {

    SymField field_address{
        {11 * 8, 6 * 8},
-        7,
-        SymField::SYMFIELD_DEC};
+        7};

    OptionsField options_type{
        {11 * 8, 8 * 8},
@@ -24,7 +24,6 @@

 #include "portapack.hpp"
 #include "baseband_api.hpp"
-#include "cpld_update.hpp"
 #include "portapack_shared_memory.hpp"

 #include <cstring>
@@ -160,17 +159,12 @@ void RDSView::focus() {
 }

 RDSView::~RDSView() {
-    // save app settings
-    app_settings.tx_frequency = transmitter_model.tuning_frequency();
-    settings.save("tx_rds", &app_settings);
-
    transmitter_model.disable();
-    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit.
-    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
+    baseband::shutdown();
 }

 void RDSView::start_tx() {
-    rds_flags.PI_code = sym_pi_code.value_hex_u64();
+    rds_flags.PI_code = sym_pi_code.to_integer();
    rds_flags.PTY = options_pty.selected_index_value();
    rds_flags.DI = view_PSN.mono_stereo ? 1 : 0;
    rds_flags.TP = check_TP.value();
@@ -193,8 +187,6 @@ void RDSView::start_tx() {
    else
        frame_datetime.clear();

-    transmitter_model.set_sampling_rate(2280000U);
-    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    tx_thread = std::make_unique<RDSThread>(frames);
@@ -218,30 +210,19 @@ RDSView::RDSView(
        &tx_view,
    });

-    // load app settings
-    auto rc = settings.load("tx_rds", &app_settings);
-    if (rc == SETTINGS_OK) {
-        transmitter_model.set_rf_amp(app_settings.tx_amp);
-        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
-        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
-        transmitter_model.set_tx_gain(app_settings.tx_gain);
-    }
    check_TP.set_value(true);

-    sym_pi_code.set_sym(0, 0xF);
-    sym_pi_code.set_sym(1, 0x3);
-    sym_pi_code.set_sym(2, 0xE);
-    sym_pi_code.set_sym(3, 0x0);
-    sym_pi_code.on_change = [this]() {
-        rds_flags.PI_code = sym_pi_code.value_hex_u64();
+    sym_pi_code.set_value(0xF3E0);
+    sym_pi_code.on_change = [this](SymField&) {
+        rds_flags.PI_code = sym_pi_code.to_integer();
    };

    options_pty.set_selected_index(0);  // None

    tx_view.on_edit_frequency = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
-            receiver_model.set_tuning_frequency(f);
+            transmitter_model.set_target_frequency(f);
        };
    };

@@ -25,6 +25,7 @@
 #include "ui_textentry.hpp"
 #include "ui_tabview.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "rds.hpp"

 using namespace rds;
@@ -140,9 +141,13 @@ class RDSView : public View {
    NavigationView& nav_;
    RDS_flags rds_flags{};

-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
+    TxRadioState radio_state_{
+        0 /* frequency */,
+        1750000 /* bandwidth */,
+        2280000 /* sampling rate */
+    };
+    app_settings::SettingsManager settings_{
+        "tx_rds", app_settings::Mode::TX};

    std::vector<RDSGroup> frame_psn{};
    std::vector<RDSGroup> frame_radiotext{};
@@ -283,7 +288,7 @@ class RDSView : public View {
    SymField sym_pi_code{
        {13 * 8, 28 + 16},
        4,
-        SymField::SYMFIELD_HEX};
+        SymField::Type::Hex};

    /*OptionsField options_coverage {
                { 17 * 8, 32 + 8 },
@@ -39,12 +39,18 @@
 #include "string_format.hpp"
 #include "file.hpp"
 #include "app_settings.hpp"
+#include "radio_state.hpp"
 #include "ui_recon_settings.hpp"

 namespace ui {

 #define RECON_CFG_FILE "SETTINGS/recon.cfg"
-#define RECON_FREQMAN_MAX_PER_FILE 99  // maximum tested limit for load frequency from freqman to work
+
+enum class recon_mode : uint8_t {
+    Recon,
+    Scanner,
+    Manual
+};

 class ReconView : public View {
   public:
@@ -60,15 +66,22 @@ class ReconView : public View {
   private:
    NavigationView& nav_;

+    RxRadioState radio_state_{};
+    app_settings::SettingsManager settings_{
+        "rx_recon"sv, app_settings::Mode::RX};
+
+    void check_update_ranges_from_current();
+    void set_loop_config(bool v);
    void clear_freqlist_for_ui_action();
    void reset_indexes();
+    void update_description();
    void audio_output_start();
    bool check_sd_card();
    size_t change_mode(freqman_index_t mod_type);
    void show_max(bool refresh_display = false);
    void recon_pause();
    void recon_resume();
-    void frequency_file_load(bool stop_all_before = false);
+    void frequency_file_load();
    void on_statistics_update(const ChannelStatistics& statistics);
    void on_index_delta(int32_t v);
    void on_stepper_delta(int32_t v);
@@ -76,72 +89,103 @@ class ReconView : public View {
    void recon_redraw();
    void handle_retune();
    void handle_coded_squelch(const uint32_t value);
-    bool recon_load_config_from_sd();
-    bool recon_save_config_to_sd();
-    bool recon_save_freq(const std::string& freq_file_path, size_t index, bool warn_if_exists);
+    void handle_remove_current_item();
+    void load_persisted_settings();
+    bool recon_save_freq(const std::filesystem::path& path, size_t index, bool warn_if_exists);
+    // placeholder for possible void recon_start_recording();
+    void recon_stop_recording();
+
+    // Returns true if 'current_index' is in bounds of frequency_list.
+    bool current_is_valid();
+    freqman_entry& current_entry();
+
+    // TODO: consolidate mode bools and use recon_mode.
+    recon_mode mode() const {
+        if (manual_mode) return recon_mode::Manual;
+        if (scanner_mode) return recon_mode::Scanner;
+        return recon_mode::Recon;
+    }
+
    jammer::jammer_range_t frequency_range{false, 0, MAX_UFREQ};  // perfect for manual recon task too...
-    int32_t squelch{0};
+    int32_t squelch{RECON_DEF_SQUELCH};
    int32_t db{0};
    int32_t timer{0};
    int32_t wait{RECON_DEF_WAIT_DURATION};  // in msec. if > 0 wait duration after a lock, if < 0 duration is set to 'wait' unless there is no more activity
-    freqman_db frequency_list = {};
+    freqman_db frequency_list{};
    int32_t current_index{0};
    bool continuous_lock{false};
    bool freqlist_cleared_for_ui_action{false};  // flag positioned by ui widgets to manage freqlist unload/load
-    std::string input_file = {"RECON"};
-    std::string output_file = {"RECON_RESULTS"};
-    std::string description = {"...no description..."};
-    bool autosave = {true};
-    bool autostart = {true};
-    bool continuous = {true};
-    bool filedelete = {true};
-    bool load_freqs = {true};
-    bool load_ranges = {true};
-    bool load_hamradios = {true};
-    bool update_ranges = {true};
-    bool fwd = {true};
-    bool recon = true;
-    uint32_t recon_lock_nb_match = {3};
-    uint32_t recon_lock_duration = {RECON_MIN_LOCK_DURATION};
-    uint32_t recon_match_mode = {RECON_MATCH_CONTINUOUS};
+    std::string input_file{"RECON"};
+    std::string output_file{"RECON_RESULTS"};
+    std::string description{"...no description..."};
+    bool autosave{true};
+    bool autostart{true};
+    bool continuous{true};
+    bool filedelete{true};
+    bool load_freqs{true};
+    bool load_ranges{true};
+    bool load_hamradios{true};
+    bool update_ranges{true};
+    bool fwd{true};
+    bool recon{true};
+    bool user_pause{false};
+    bool auto_record_locked{false};
+    bool is_recording{false};
+    uint32_t recon_lock_nb_match{RECON_DEF_NB_MATCH};
+    uint32_t recon_lock_duration{RECON_MIN_LOCK_DURATION};
+    uint32_t recon_match_mode{RECON_MATCH_CONTINUOUS};
    bool scanner_mode{false};
    bool manual_mode{false};
-    bool sd_card_mounted = false;
-    int32_t stepper = 0;
-    int32_t index_stepper = 0;
-    int64_t freq = 0;
-    uint32_t step = 0;
-    freqman_index_t def_modulation = 0;
-    freqman_index_t def_bandwidth = 0;
-    freqman_index_t def_step = 0;
-    tone_index tone = 0;
-    freqman_entry last_entry = {};
-    bool entry_has_changed = false;
+    bool sd_card_mounted{false};
+    int32_t stepper{0};
+    int32_t index_stepper{0};
+    int64_t freq{0};
+    uint32_t step{0};
+    freqman_index_t def_step{0};
+    freqman_entry last_entry{};
+    bool entry_has_changed{false};
    uint32_t freq_lock{0};
-    int64_t minfreq = 0;
-    int64_t maxfreq = 0;
-    bool has_looped = false;
-    int8_t status = -1;  // 0 recon , 1 locking , 2 locked
-    int32_t last_timer = -1;
-    int8_t last_db = -127;
-    uint16_t last_nb_match = 999;
-    uint16_t last_freq_lock = 999;
-    size_t last_list_size = 0;
-    int8_t last_rssi_min = -127;
-    int8_t last_rssi_med = -127;
-    int8_t last_rssi_max = -127;
-    int32_t last_index = -1;
-    int32_t last_squelch_index = -1;
-    int64_t last_freq = 0;
-    std::string freq_file_path = {};
+    int64_t minfreq{0};
+    int64_t maxfreq{0};
+    bool has_looped{false};
+    int8_t status{-1};  // 0 recon , 1 locking , 2 locked
+    int32_t last_timer{-1};
+    int8_t last_db{-127};
+    uint16_t last_nb_match{999};
+    uint16_t last_freq_lock{999};
+    size_t last_list_size{0};
+    int8_t last_rssi_min{127};
+    int8_t last_rssi_med{0};
+    int8_t last_rssi_max{-127};
+    int32_t last_index{-1};
+    int64_t last_freq{0};
+    std::string freq_file_path{};
+    systime_t chrono_start{};
+    systime_t chrono_end{};
+
+    // Persisted settings.
+    SettingsStore ui_settings{
+        "recon"sv,
+        {
+            {"input_file"sv, &input_file},
+            {"output_file"sv, &output_file},
+            {"lock_duration"sv, &recon_lock_duration},
+            {"lock_nb_match"sv, &recon_lock_nb_match},
+            {"squelch_level"sv, &squelch},
+            {"match_mode"sv, &recon_match_mode},
+            {"match_wait"sv, &wait},
+            {"range_min"sv, &frequency_range.min},
+            {"range_max"sv, &frequency_range.max},
+        }};
+
+    std::unique_ptr<RecordView> record_view{};

    Labels labels{
        {{0 * 8, 0 * 16}, "LNA:   VGA:   AMP:  VOL:     ", Color::light_grey()},
-        {{0 * 8, 1 * 16}, "BW:      SQ:    W,L:     ,     ", Color::light_grey()},
-        {{3 * 8, 10 * 16}, "START       END     MANUAL", Color::light_grey()},
-        {{0 * 8, (26 * 8) + 4}, "MODE:", Color::light_grey()},
-        {{11 * 8, (26 * 8) + 4}, "STEP:", Color::light_grey()},
-    };
+        {{3 * 8, 8 * 16}, "START       END", Color::light_grey()},
+        {{0 * 8, (22 * 8)}, "                S:          ", Color::light_grey()},
+        {{0 * 8, (24 * 8) + 4}, "NBLCKS:x      W,L:      ,     ", Color::light_grey()},
+        {{0 * 8, (26 * 8) + 4}, "MODE:     ,      SQUELCH:    ", Color::light_grey()}};

    LNAGainField field_lna{
        {4 * 8, 0 * 16}};
@@ -155,65 +199,41 @@ class ReconView : public View {
    AudioVolumeField field_volume{
        {24 * 8, 0 * 16}};

-    OptionsField field_bw{
-        {3 * 8, 1 * 16},
-        6,
-        {}};
-
-    NumberField field_squelch{
-        {12 * 8, 1 * 16},
-        3,
-        {-90, 20},
-        1,
-        ' ',
+    Text file_name{
+        // show file used
+        {0, 1 * 16, SCREEN_W, 16},
    };

-    NumberField field_wait{
-        {20 * 8, 1 * 16},
-        5,
-        {-RECON_MAX_LOCK_DURATION, RECON_MAX_LOCK_DURATION},
-        STATS_UPDATE_INTERVAL,
-        ' ',
-    };
-
-    NumberField field_lock_wait{
-        {26 * 8, 1 * 16},
-        4,
-        {RECON_MIN_LOCK_DURATION, RECON_MAX_LOCK_DURATION},
-        STATS_UPDATE_INTERVAL,
-        ' ',
+    Text desc_cycle{
+        {0, 2 * 16, SCREEN_W, 16},
    };

    RSSI rssi{
-        {0 * 16, 2 * 16, SCREEN_W - 8 * 8 + 4, 14},
+        {0 * 16, 3 * 16 + 2, SCREEN_W - 8 * 8 + 4, 12},
    };

    ButtonWithEncoder text_cycle{
-        {0, 3 * 16, 4 * 8, 16},
+        {0, 4 * 16, 4 * 8, 16},
        ""};

    // "/XXX -XXX db" =>  12 chars max
    Text text_max{
-        {4 * 8, 3 * 16, 12 * 8, 16},
+        {4 * 8, 4 * 16, 12 * 8, 16},
    };

    // "XX/XX" =>  5 chars max
    Text text_nb_locks{
-        {16 * 8, 3 * 16, 5 * 8, 16},
-    };
-
-    Text desc_cycle{
-        {0, 4 * 16, SCREEN_W, 16},
+        {16 * 8, 4 * 16, 5 * 8, 16},
    };

    Text big_display{
        // Show frequency in text mode
-        {0, 5 * 16, 23 * 8, 16},
+        {0, 5 * 16, 21 * 8, 16},
    };

    Text freq_stats{
        // Show frequency stats in text mode
-        {0, 6 * 16, 23 * 8, 16},
+        {0, 6 * 16, 21 * 8, 16},
    };

    // TIMER: 9999
@@ -224,48 +244,87 @@ class ReconView : public View {

    // T: Senn. 32.000k
    Text text_ctcss{
-        {12 * 8 + 4, 7 * 16, 14 * 8, 1 * 8},
+        {14 * 8, 7 * 16, 8 * 8, 1 * 8},
        ""};

-    Button button_config{
-        {SCREEN_W - 7 * 8, 2 * 16, 7 * 8, 28},
-        "CONFIG"};
-
-    Button button_looking_glass{
-        {SCREEN_W - 7 * 8, 5 * 16, 7 * 8, 28},
-        "GLASS"};
-
    // Button can be RECON or SCANNER
    Button button_scanner_mode{
-        {SCREEN_W - 7 * 8, 8 * 16, 7 * 8, 28},
+        {SCREEN_W - 7 * 8, 3 * 16, 7 * 8, 28},
        "RECON"};

-    Text file_name{
-        // show file used
-        {0, 8 * 16 + 6, SCREEN_W - 7 * 8, 16},
-    };
+    Button button_loop_config{
+        {SCREEN_W - 7 * 8, 5 * 16, 7 * 8, 28},
+        "[LOOP]"};
+
+    Button button_config{
+        {SCREEN_W - 7 * 8, 7 * 16, 7 * 8, 28},
+        "CONFIG"};

    ButtonWithEncoder button_manual_start{
-        {0 * 8, 11 * 16, 11 * 8, 28},
+        {0 * 8, 9 * 16, 11 * 8, 28},
        ""};

    ButtonWithEncoder button_manual_end{
-        {12 * 8 - 6, 11 * 16, 11 * 8, 28},
+        {12 * 8 - 6, 9 * 16, 11 * 8, 28},
        ""};

+    OptionsField field_recon_match_mode{
+        {0 * 8, 11 * 16},
+        16,  // CONTINUOUS MATCH MODE / SPARSE TIMED MATCH MODE
+        {
+            {"MATCH:CONTINOUS", 0},
+            {"MATCH:SPARSE", 1}}};
+
+    OptionsField step_mode{
+        {18 * 8, 11 * 16},
+        12,
+        {}};
+
    Button button_manual_recon{
-        {23 * 8 - 3, 11 * 16, 7 * 8, 28},
+        {23 * 8, 9 * 16, 7 * 8, 28},
        "SEARCH"};

+    NumberField field_nblocks{
+        {8 * 8, 24 * 8 + 4},
+        2,
+        {1, 99},
+        1,
+        ' ',
+    };
+
+    NumberField field_wait{
+        {19 * 8, 24 * 8 + 4},
+        5,
+        {-RECON_MAX_LOCK_DURATION, RECON_MAX_LOCK_DURATION},
+        STATS_UPDATE_INTERVAL,
+        ' ',
+    };
+
+    NumberField field_lock_wait{
+        {25 * 8, 24 * 8 + 4},
+        4,
+        {STATS_UPDATE_INTERVAL, RECON_MAX_LOCK_DURATION},
+        STATS_UPDATE_INTERVAL,
+        ' ',
+    };
+
    OptionsField field_mode{
-        {5 * 8, (26 * 8) + 4},
+        {6 * 8, (26 * 8) + 4},
+        4,
+        {}};
+
+    OptionsField field_bw{
+        {11 * 8, (26 * 8) + 4},
        6,
        {}};

-    OptionsField step_mode{
-        {17 * 8, (26 * 8) + 4},
-        12,
-        {}};
+    NumberField field_squelch{
+        {26 * 8, (26 * 8) + 4},
+        3,
+        {-90, 20},
+        1,
+        ' ',
+    };

    ButtonWithEncoder button_pause{
        {0, (15 * 16) - 4, 72, 28},
@@ -307,9 +366,6 @@ class ReconView : public View {
        [this](const Message* const p) {
            this->on_statistics_update(static_cast<const ChannelStatisticsMessage*>(p)->statistics);
        }};
-    // app save settings
-    std::app_settings settings{};
-    std::app_settings::AppSettings app_settings{};
 };

 } /* namespace ui */
@@ -21,12 +21,13 @@
 * Boston, MA 02110-1301, USA.
 */

-#include "ui_recon_settings.hpp"
-#include "ui_navigation.hpp"
 #include "ui_fileman.hpp"
+#include "ui_navigation.hpp"
+#include "ui_recon_settings.hpp"
 #include "ui_textentry.hpp"

 #include "file.hpp"
+#include "freqman_db.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"

@@ -38,30 +39,26 @@ namespace ui {
 ReconSetupViewMain::ReconSetupViewMain(NavigationView& nav, Rect parent_rect, std::string input_file, std::string output_file)
    : View(parent_rect), _input_file{input_file}, _output_file{output_file} {
    hidden(true);
-    add_children({&button_load_freqs,
+    add_children({&button_input_file,
                  &text_input_file,
-                  &button_save_freqs,
-                  &button_output_file,
+                  &button_choose_output_file,
+                  &button_choose_output_name,
                  &checkbox_autosave_freqs,
                  &checkbox_autostart_recon,
-                  &checkbox_continuous,
                  &checkbox_clear_output});

    checkbox_autosave_freqs.set_value(persistent_memory::recon_autosave_freqs());
    checkbox_autostart_recon.set_value(persistent_memory::recon_autostart_recon());
-    checkbox_continuous.set_value(persistent_memory::recon_continuous());
    checkbox_clear_output.set_value(persistent_memory::recon_clear_output());

    text_input_file.set(_input_file);
-    button_output_file.set_text(_output_file);
+    button_choose_output_name.set_text(_output_file);

-    button_load_freqs.on_select = [this, &nav](Button&) {
+    button_input_file.on_select = [this, &nav](Button&) {
        auto open_view = nav.push<FileLoadView>(".TXT");
+        open_view->push_dir(freqman_dir);
        open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
-                                                                   // get the filename without txt extension so we can use load_freqman_file fcn
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                _input_file = new_file_path.stem().string();
                text_input_file.set(_input_file);
            } else {
@@ -70,75 +67,62 @@ ReconSetupViewMain::ReconSetupViewMain(NavigationView& nav, Rect parent_rect, st
        };
    };

-    button_save_freqs.on_select = [this, &nav](Button&) {
+    button_choose_output_file.on_select = [this, &nav](Button&) {
        auto open_view = nav.push<FileLoadView>(".TXT");
+        open_view->push_dir(freqman_dir);
        open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                _output_file = new_file_path.stem().string();
-                button_output_file.set_text(_output_file);
+                button_choose_output_name.set_text(_output_file);
            } else {
-                nav.display_modal("LOAD ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
+                nav.display_modal("SAVE ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
            }
        };
    };

-    button_output_file.on_select = [this, &nav](Button&) {
-        text_prompt(nav, _output_file, 28,
-                    [this](std::string& buffer) {
-                        _output_file = buffer;
-                        button_output_file.set_text(_output_file);
-                    });
+    button_choose_output_name.on_select = [this, &nav](Button&) {
+        text_prompt(nav, _output_file, 28, [this](std::string& buffer) {
+            _output_file = buffer;
+            button_choose_output_name.set_text(_output_file);
+        });
    };
 };

 void ReconSetupViewMain::save(std::string& input_file, std::string& output_file) {
    persistent_memory::set_recon_autosave_freqs(checkbox_autosave_freqs.value());
    persistent_memory::set_recon_autostart_recon(checkbox_autostart_recon.value());
-    persistent_memory::set_recon_continuous(checkbox_continuous.value());
    persistent_memory::set_recon_clear_output(checkbox_clear_output.value());
    input_file = _input_file;
    output_file = _output_file;
 };
-void ReconSetupViewMore::save(uint32_t& recon_lock_duration, uint32_t& recon_lock_nb_match, uint32_t& recon_match_mode) {
+void ReconSetupViewMore::save() {
    persistent_memory::set_recon_load_freqs(checkbox_load_freqs.value());
    persistent_memory::set_recon_load_ranges(checkbox_load_ranges.value());
    persistent_memory::set_recon_load_hamradios(checkbox_load_hamradios.value());
    persistent_memory::set_recon_update_ranges_when_recon(checkbox_update_ranges_when_recon.value());
-    recon_lock_duration = field_recon_lock_duration.value();
-    recon_lock_nb_match = field_recon_lock_nb_match.value();
-    recon_match_mode = field_recon_match_mode.selected_index_value();
+    persistent_memory::set_recon_auto_record_locked(checkbox_auto_record_locked.value());
 };

 void ReconSetupViewMain::focus() {
-    button_load_freqs.focus();
+    button_input_file.focus();
 }

-ReconSetupViewMore::ReconSetupViewMore(NavigationView& nav, Rect parent_rect, uint32_t recon_lock_duration, uint32_t recon_lock_nb_match, uint32_t recon_match_mode)
-    : View(parent_rect), _recon_lock_duration{recon_lock_duration}, _recon_lock_nb_match{recon_lock_nb_match}, _recon_match_mode{recon_match_mode} {
+ReconSetupViewMore::ReconSetupViewMore(NavigationView& nav, Rect parent_rect)
+    : View(parent_rect) {
    (void)nav;
    hidden(true);

-    add_children({
-        &checkbox_load_freqs,
-        &checkbox_load_ranges,
-        &checkbox_load_hamradios,
-        &checkbox_update_ranges_when_recon,
-        &text_recon_lock_duration,
-        &field_recon_lock_duration,
-        &text_recon_lock_nb,
-        &field_recon_lock_nb_match,
-        &field_recon_match_mode,
-    });
+    add_children({&checkbox_load_freqs,
+                  &checkbox_load_ranges,
+                  &checkbox_load_hamradios,
+                  &checkbox_update_ranges_when_recon,
+                  &checkbox_auto_record_locked});

    checkbox_load_freqs.set_value(persistent_memory::recon_load_freqs());
    checkbox_load_ranges.set_value(persistent_memory::recon_load_ranges());
    checkbox_load_hamradios.set_value(persistent_memory::recon_load_hamradios());
    checkbox_update_ranges_when_recon.set_value(persistent_memory::recon_update_ranges_when_recon());
-    field_recon_lock_duration.set_value(_recon_lock_duration);
-    field_recon_lock_nb_match.set_value(_recon_lock_nb_match);
-    field_recon_match_mode.set_by_value(_recon_match_mode);
+    checkbox_auto_record_locked.set_value(persistent_memory::recon_auto_record_locked());
 };

 void ReconSetupViewMore::focus() {
@@ -149,14 +133,8 @@ void ReconSetupView::focus() {
    viewMain.focus();
 }

-ReconSetupView::ReconSetupView(
-    NavigationView& nav,
-    std::string _input_file,
-    std::string _output_file,
-    uint32_t _recon_lock_duration,
-    uint32_t _recon_lock_nb_match,
-    uint32_t _recon_match_mode)
-    : nav_{nav}, input_file{_input_file}, output_file{_output_file}, recon_lock_duration{_recon_lock_duration}, recon_lock_nb_match{_recon_lock_nb_match}, recon_match_mode{_recon_match_mode} {
+ReconSetupView::ReconSetupView(NavigationView& nav, std::string _input_file, std::string _output_file)
+    : nav_{nav}, input_file{_input_file}, output_file{_output_file} {
    add_children({&tab_view,
                  &viewMain,
                  &viewMore,
@@ -164,13 +142,10 @@ ReconSetupView::ReconSetupView(

    button_save.on_select = [this, &nav](Button&) {
        viewMain.save(input_file, output_file);
-        viewMore.save(recon_lock_duration, recon_lock_nb_match, recon_match_mode);
+        viewMore.save();
        std::vector<std::string> messages;
        messages.push_back(input_file);
        messages.push_back(output_file);
-        messages.push_back(to_string_dec_uint(recon_lock_duration));
-        messages.push_back(to_string_dec_uint(recon_lock_nb_match));
-        messages.push_back(to_string_dec_uint(recon_match_mode));
        on_changed(messages);
        nav.pop();
    };
@@ -31,9 +31,6 @@
 #include "ui_navigation.hpp"
 #include "string_format.hpp"

-// maximum usable freq
-#define MAX_UFREQ 7200000000
-
 // 1Mhz helper
 #ifdef OneMHz
 #undef OneMHz
@@ -50,6 +47,8 @@
 // maximum lock duration
 #define RECON_MAX_LOCK_DURATION 9900

+#define RECON_DEF_SQUELCH -14
+
 // default number of match to have a lock
 #define RECON_DEF_NB_MATCH 3
 #define RECON_MIN_LOCK_DURATION 100   // have to be >= and a multiple of STATS_UPDATE_INTERVAL
@@ -71,20 +70,21 @@ class ReconSetupViewMain : public View {
    void focus() override;

   private:
-    std::string _input_file = {"RECON"};
-    std::string _output_file = {"RECON_RESULTS"};
+    std::string _input_file{"RECON"};
+    std::string _output_file{"RECON_RESULTS"};

-    Button button_load_freqs{
+    Button button_input_file{
        {1 * 8, 12, 18 * 8, 22},
        "select input file"};
    Text text_input_file{
        {1 * 8, 4 + 2 * 16, 18 * 8, 22},
        "RECON"};

-    Button button_save_freqs{
+    Button button_choose_output_file{
        {1 * 8, 4 * 16 - 8, 18 * 8, 22},
        "select output file"};
-    Button button_output_file{
+
+    Button button_choose_output_name{
        {1 * 8, 5 * 16 - 2, 18 * 8, 22},
        "RECON_RESULTS"};

@@ -98,29 +98,21 @@ class ReconSetupViewMain : public View {
        3,
        "autostart recon"};

-    Checkbox checkbox_continuous{
-        {1 * 8, 11 * 16 - 4},
-        3,
-        "continuous"};
    Checkbox checkbox_clear_output{
-        {1 * 8, 13 * 16 - 4},
+        {1 * 8, 11 * 16 - 4},
        3,
        "clear output at start"};
 };

 class ReconSetupViewMore : public View {
   public:
-    ReconSetupViewMore(NavigationView& nav, Rect parent_rect, uint32_t _recon_lock_duration, uint32_t _recon_lock_nb_match, uint32_t _recon_match_mode);
+    ReconSetupViewMore(NavigationView& nav, Rect parent_rect);

-    void save(uint32_t& recon_lock_duration, uint32_t& recon_lock_nb_match, uint32_t& recon_match_mode);
+    void save();

    void focus() override;

   private:
-    uint32_t _recon_lock_duration = STATS_UPDATE_INTERVAL;
-    uint32_t _recon_lock_nb_match = RECON_DEF_NB_MATCH;
-    uint32_t _recon_match_mode = RECON_MATCH_CONTINUOUS;
-
    Checkbox checkbox_load_freqs{
        {1 * 8, 12},
        3,
@@ -140,43 +132,15 @@ class ReconSetupViewMore : public View {
        {1 * 8, 102},
        3,
        "auto update m-ranges"};
-
-    NumberField field_recon_lock_duration{
-        {1 * 8, 132},                                      // position X , Y
-        4,                                                 // number of displayed digits (even empty)
-        {STATS_UPDATE_INTERVAL, RECON_MAX_LOCK_DURATION},  // range of number
-        STATS_UPDATE_INTERVAL,                             // rotary encoder increment
-        ' ',                                               // filling character
-        false                                              // can loop
-    };
-
-    Text text_recon_lock_duration{
-        {1 * 8, 132, 22 * 8, 22},
-        "    ms (lock duration)"};
-
-    NumberField field_recon_lock_nb_match{
-        {1 * 8, 162},
-        4,
-        {1, 99},
-        1,
-        ' ',
-        false};
-
-    Text text_recon_lock_nb{
-        {1 * 8, 162, 25 * 8, 22},
-        "    x (nb lock to match freq)"};
-
-    OptionsField field_recon_match_mode{
-        {1 * 8, 192},
-        20,  // CONTINUOUS MATCH MODE / SPARSE TIMED MATCH MODE
-        {
-            {"SQL MATCH: CONTINOUS", 0},
-            {"SQL MATCH: SPARSE", 1}}};
+    Checkbox checkbox_auto_record_locked{
+        {1 * 8, 132},
+        3,
+        "record locked periods"};
 };

 class ReconSetupView : public View {
   public:
-    ReconSetupView(NavigationView& nav, std::string _input_file, std::string _output_file, uint32_t _recon_lock_duration, uint32_t _recon_lock_nb_match, uint32_t _recon_match_mode);
+    ReconSetupView(NavigationView& nav, std::string _input_file, std::string _output_file);

    std::function<void(std::vector<std::string> messages)> on_changed{};

@@ -187,16 +151,13 @@ class ReconSetupView : public View {
   private:
    NavigationView& nav_;

-    std::string input_file = {"RECON"};
-    std::string output_file = {"RECON_RESULTS"};
-    uint32_t recon_lock_duration = STATS_UPDATE_INTERVAL;
-    uint32_t recon_lock_nb_match = RECON_DEF_NB_MATCH;
-    uint32_t recon_match_mode = RECON_MATCH_CONTINUOUS;
+    std::string input_file{"RECON"};
+    std::string output_file{"RECON_RESULTS"};

-    Rect view_rect = {0, 3 * 8, SCREEN_W, 230};
+    Rect view_rect{0, 3 * 8, SCREEN_W, 230};

    ReconSetupViewMain viewMain{nav_, view_rect, input_file, output_file};
-    ReconSetupViewMore viewMore{nav_, view_rect, recon_lock_duration, recon_lock_nb_match, recon_match_mode};
+    ReconSetupViewMore viewMore{nav_, view_rect};

    TabView tab_view{
        {"Main", Color::cyan(), &viewMain},
@@ -1,6 +1,5 @@
 /*
- * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
- * Copyright (C) 2018 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -22,30 +21,591 @@

 #include "ui_remote.hpp"

-#include "baseband_api.hpp"
+#include "binder.hpp"
+#include "convert.hpp"
+#include "file_reader.hpp"
+#include "io_convert.hpp"
+#include "irq_controls.hpp"
+#include "oversample.hpp"
 #include "string_format.hpp"
+#include "ui_fileman.hpp"
+#include "ui_receiver.hpp"
+#include "ui_textentry.hpp"
+#include "utility.hpp"

 using namespace portapack;
+namespace fs = std::filesystem;

 namespace ui {

-void RemoteView::focus() {
-    button.focus();
+static constexpr uint8_t text_edit_max = 30;
+
+/* RemoteEntryModel **************************************/
+
+std::string RemoteEntryModel::to_string() const {
+    return join(',', {path.string(),
+                      name,
+                      to_string_dec_uint(icon),
+                      to_string_dec_uint(bg_color),
+                      to_string_dec_uint(fg_color),
+                      to_string_dec_uint(metadata.center_frequency),
+                      to_string_dec_uint(metadata.sample_rate)});
 }

-RemoteView::~RemoteView() {
-    // transmitter_model.disable();
-    // baseband::shutdown();
+Optional<RemoteEntryModel> RemoteEntryModel::parse(std::string_view line) {
+    auto cols = split_string(line, ',');
+
+    if (cols.size() < 7)
+        return {};
+
+    RemoteEntryModel entry{};
+
+    entry.path = cols[0];
+    entry.name = std::string{cols[1]};
+    parse_int(cols[2], entry.icon);
+    parse_int(cols[3], entry.bg_color);
+    parse_int(cols[4], entry.fg_color);
+    parse_int(cols[5], entry.metadata.center_frequency);
+    parse_int(cols[6], entry.metadata.sample_rate);
+
+    return entry;
 }

-RemoteView::RemoteView(
-    NavigationView& nav) {
-    add_children({&labels,
-                  &button});
+/* RemoteModel *******************************************/

-    button.on_select = [this, &nav](Button&) {
-        nav.pop();
+bool RemoteModel::delete_entry(const RemoteEntryModel* entry) {
+    // NB: expecting 'entry' to be a pointer to an entry in vector.
+    auto it = std::find_if(
+        entries.begin(), entries.end(),
+        [entry](auto& item) { return entry == &item; });
+    if (it == entries.end())
+        return false;
+
+    entries.erase(it);
+    return true;
+}
+
+bool RemoteModel::load(const std::filesystem::path& path) {
+    File f;
+    auto error = f.open(path);
+    if (error)
+        return false;
+
+    entries.clear();
+
+    bool first = true;
+    auto reader = FileLineReader(f);
+    for (const auto& line : reader) {
+        if (line.length() == 0 || line[0] == '#')
+            continue;  // Empty or comment line.
+
+        // First line is the "name" field.
+        if (first) {
+            name = trim(line);
+            first = false;
+            continue;
+        }
+
+        // All the other lines are button entries.
+        auto entry = RemoteEntryModel::parse(line);
+        if (entry)
+            entries.push_back(*std::move(entry));
+    }
+
+    return true;
+}
+
+bool RemoteModel::save(const std::filesystem::path& path) {
+    File f;
+    auto error = f.create(path);
+    if (error)
+        return false;
+
+    f.write_line(name);
+    for (auto& entry : entries)
+        f.write_line(entry.to_string());
+
+    return true;
+}
+
+/* RemoteButton ******************************************/
+
+RemoteButton::RemoteButton(Rect parent_rect, RemoteEntryModel* entry)
+    : NewButton{parent_rect, {}, nullptr},
+      entry_{nullptr} {
+    set_entry(entry);
+    // Forward to on_select2 -- this isn't ideal, but works for now.
+    on_select = [this]() {
+        if (on_select2)
+            on_select2(*this);
    };
 }

+void RemoteButton::on_focus() {
+    // Enable long press on "Select".
+    SwitchesState config;
+    config[toUType(Switch::Sel)] = true;
+    set_switches_long_press_config(config);
+}
+
+void RemoteButton::on_blur() {
+    // Reset long press.
+    SwitchesState config{};
+    set_switches_long_press_config(config);
+}
+
+bool RemoteButton::on_key(KeyEvent key) {
+    if (key == KeyEvent::Select) {
+        if (key_is_long_pressed(key) && on_long_select) {
+            on_long_select(*this);
+            return true;
+        }
+
+        if (on_select2) {
+            on_select2(*this);
+            return true;
+        }
+    }
+
+    return false;
+}
+
+void RemoteButton::paint(Painter& painter) {
+    NewButton::paint(painter);
+
+    // Add a border on the highlighted button.
+    if (has_focus() || highlighted()) {
+        auto r = screen_rect();
+        painter.draw_rectangle(r, Color::white());
+
+        auto p = r.location() + Point{1, 1};
+        auto s = Size{r.size().width() - 2, r.size().height() - 2};
+        painter.draw_rectangle({p, s}, Color::light_grey());
+    }
+};
+
+RemoteEntryModel* RemoteButton::entry() {
+    return entry_;
+}
+
+void RemoteButton::set_entry(RemoteEntryModel* entry) {
+    entry_ = entry;
+    set_focusable(entry_ != nullptr);
+    hidden(entry_ == nullptr);
+
+    if (entry_) {
+        set_text(entry_->name);
+        set_bitmap(RemoteIcons::get(entry_->icon));
+    }
+
+    set_dirty();
+}
+
+Style RemoteButton::paint_style() {
+    if (!entry_)
+        return style();
+
+    MutableStyle s{style()};
+    s.foreground = RemoteColors::get(entry_->fg_color);
+    s.background = RemoteColors::get(entry_->bg_color);
+
+    if (has_focus() || highlighted())
+        s.invert();
+
+    // It's kind of a hack to set 'color_' here, but the base
+    // class' paint logic is kind of convoluted but isn't worth
+    // the extra bytes to copy and paste a paint override.
+    color_ = s.foreground;
+
+    return s;
+}
+
+/* RemoteEntryEditView ***********************************/
+
+RemoteEntryEditView::RemoteEntryEditView(
+    NavigationView& nav,
+    RemoteEntryModel& entry)
+    : entry_{entry} {
+    add_children({
+        &labels,
+        &field_name,
+        &field_path,
+        &field_freq,
+        &text_rate,
+        &field_icon_index,
+        &field_fg_color_index,
+        &field_bg_color_index,
+        &button_preview,
+        &button_delete,
+        &button_done,
+    });
+
+    bind(field_name, entry_.name, nav, [this](auto& v) {
+        button_preview.set_text(v);
+    });
+
+    field_path.on_select = [this, &nav](TextField&) {
+        auto open_view = nav.push<FileLoadView>(".C*");
+        open_view->push_dir(u"CAPTURES");
+        open_view->on_changed = [this](fs::path path) {
+            load_path(std::move(path));
+            refresh_ui();
+        };
+    };
+
+    bind(field_freq, entry_.metadata.center_frequency, nav);
+    bind(field_icon_index, entry_.icon, [this](auto v) {
+        button_preview.set_bitmap(RemoteIcons::get(v));
+    });
+    bind(field_fg_color_index, entry_.fg_color, [this](auto v) {
+        button_preview.set_color(RemoteColors::get(v));
+    });
+    bind(field_bg_color_index, entry_.bg_color, [this](auto) {
+        button_preview.set_dirty();
+    });
+
+    button_delete.on_select = [this, &nav]() {
+        nav.display_modal(
+            "Delete?", "    Delete this button?", YESNO,
+            [this, &nav](bool choice) {
+                if (choice) {
+                    if (on_delete)
+                        on_delete(entry_);
+
+                    // Exit the edit view upon delete.
+                    nav.set_on_pop([&nav]() { nav.pop(); });
+                }
+            });
+    };
+
+    button_done.on_select = [&nav](Button&) {
+        nav.pop();
+    };
+
+    refresh_ui();
+}
+
+void RemoteEntryEditView::focus() {
+    button_done.focus();
+}
+
+void RemoteEntryEditView::refresh_ui() {
+    field_path.set_text(entry_.path.filename().string());
+    field_freq.set_value(entry_.metadata.center_frequency);
+    text_rate.set(unit_auto_scale(entry_.metadata.sample_rate, 3, 0) + "Hz");
+}
+
+void RemoteEntryEditView::load_path(std::filesystem::path&& path) {
+    // Read metafile if it exists.
+    auto metadata_path = get_metadata_path(path);
+    auto metadata = read_metadata_file(metadata_path);
+    entry_.path = std::move(path);
+
+    // Use metadata if found, otherwise fallback to the TX frequency.
+    if (metadata)
+        entry_.metadata = *metadata;
+    else
+        entry_.metadata = {transmitter_model.target_frequency(), 500'000};
+}
+
+/* RemoteView ********************************************/
+
+RemoteView::RemoteView(
+    NavigationView& nav)
+    : nav_{nav} {
+    baseband::run_image(portapack::spi_flash::image_tag_replay);
+
+    add_children({
+        &field_title,
+        &tx_view,
+        &check_loop,
+        &field_filename,
+        &button_add,
+        &button_new,
+        &button_open,
+        &waterfall,
+    });
+
+    create_buttons();
+
+    field_title.on_select = [this, &nav](TextField&) {
+        temp_buffer_ = model_.name;
+        text_prompt(nav_, temp_buffer_, text_edit_max, [this](std::string& new_name) {
+            model_.name = new_name;
+            refresh_ui();
+            set_needs_save();
+        });
+    };
+
+    field_filename.on_select = [this, &nav](TextField&) {
+        temp_buffer_ = remote_path_.stem().string();
+        text_prompt(nav_, temp_buffer_, text_edit_max, [this](std::string& new_name) {
+            rename_remote(new_name);
+            refresh_ui();
+        });
+    };
+
+    button_add.on_select = [this]() { add_button(); };
+    button_new.on_select = [this]() { new_remote(); };
+    button_open.on_select = [this]() { open_remote(); };
+
+    // Fill in the area between the remote buttons and bottom UI with waterfall.
+    Dim waterfall_top = buttons_top_.y() + button_area_height;
+    Dim waterfall_bottom = button_add.parent_rect().top();
+    Dim waterfall_height = waterfall_bottom - waterfall_top;
+    waterfall.set_parent_rect({0, waterfall_top, screen_width, waterfall_height});
+
+    ensure_directory(u"REMOTES");
+
+    // Load the previously loaded remote if exists.
+    if (!load_remote(settings_.remote_path))
+        init_remote();
+
+    refresh_ui();
+}
+
+RemoteView::RemoteView(NavigationView& nav, fs::path path)
+    : RemoteView(nav) {
+    load_remote(std::move(path));
+    refresh_ui();
+}
+
+RemoteView::~RemoteView() {
+    stop();
+    baseband::shutdown();
+
+    save_remote(/*show_error*/ false);
+}
+
+void RemoteView::focus() {
+    if (model_.entries.empty())
+        button_add.focus();
+    else
+        buttons_[0]->focus();
+}
+
+void RemoteView::create_buttons() {
+    // Handler callbacks.
+    auto handle_send = [this](RemoteButton& btn) {
+        if (btn.entry()->path.empty())
+            // No path set? Go to edit mode instead.
+            edit_button(btn);
+        else if (is_sending() && &btn == current_btn_)
+            // Pressed the same button again? Stop.
+            stop();
+        else
+            // Start sending.
+            send_button(btn);
+    };
+
+    auto handle_edit = [this](RemoteButton& btn) {
+        edit_button(btn);
+    };
+
+    // Create and add RemoteButtons for the whole grid.
+    for (size_t i = 0; i < max_buttons; ++i) {
+        Coord x = i % button_cols;
+        Coord y = i / button_cols;
+        Point pos = Point{x * button_width, y * button_height} + buttons_top_;
+
+        auto btn = std::make_unique<RemoteButton>(
+            Rect{pos, {button_width, button_height}},
+            nullptr);
+        btn->on_select2 = handle_send;
+        btn->on_long_select = handle_edit;
+
+        add_child(btn.get());
+        buttons_.push_back(std::move(btn));
+    }
+}
+
+void RemoteView::reset_buttons() {
+    // Whever the model's entries instance is invalidated,
+    // all the pointers in the buttons will end up dangling.
+    // TODO: This is pretty lame. Could maybe static alloc?
+    for (auto& btn : buttons_)
+        btn->set_entry(nullptr);
+}
+
+void RemoteView::refresh_ui() {
+    field_title.set_text(model_.name);
+    field_filename.set_text(remote_path_.stem().string());
+
+    // Update buttons from the model.
+    for (size_t i = 0; i < buttons_.size(); ++i) {
+        if (i < model_.entries.size())
+            buttons_[i]->set_entry(&model_.entries[i]);
+        else
+            buttons_[i]->set_entry(nullptr);
+    }
+}
+
+void RemoteView::add_button() {
+    if (model_.entries.size() >= max_buttons)
+        return;
+
+    // Don't let replay thread read the model while editing.
+    stop();
+
+    model_.entries.push_back({{}, "<EMPTY>", 0, 3, 1});
+    reset_buttons();
+    refresh_ui();
+    set_needs_save();
+}
+
+void RemoteView::edit_button(RemoteButton& btn) {
+    // Don't let replay thread read the model while editing.
+    stop();
+
+    auto edit_view = nav_.push<RemoteEntryEditView>(*btn.entry());
+    nav_.set_on_pop([this]() {
+        refresh_ui();
+        set_needs_save();
+        focus();  // Need to refocus after refreshing the buttons.
+    });
+
+    edit_view->on_delete = [this](RemoteEntryModel& to_delete) {
+        model_.delete_entry(&to_delete);
+        reset_buttons();
+    };
+}
+
+void RemoteView::send_button(RemoteButton& btn) {
+    // TODO: If this is called while is_sending() == true,
+    // it just stops and doesn't start the new button?
+
+    // Reset everything to prepare to send a file.
+    stop();
+    current_btn_ = &btn;  // Stash for looping.
+
+    // Open the sample file to send.
+    auto reader = std::make_unique<FileConvertReader>();
+    auto error = reader->open(btn.entry()->path);
+    if (error) {
+        show_error("Can't open file:\n" + btn.entry()->path.stem().string());
+        return;
+    }
+
+    // Update the sample rate in proc_replay baseband.
+    baseband::set_sample_rate(
+        btn.entry()->metadata.sample_rate,
+        get_oversample_rate(btn.entry()->metadata.sample_rate));
+
+    // ReplayThread starts immediately on construction; must be set before creating.
+    transmitter_model.set_target_frequency(btn.entry()->metadata.center_frequency);
+    transmitter_model.set_sampling_rate(get_actual_sample_rate(btn.entry()->metadata.sample_rate));
+    transmitter_model.set_baseband_bandwidth(baseband_bandwidth);
+    transmitter_model.enable();
+
+    // ReplayThread reads the file and sends to the baseband.
+    replay_thread_ = std::make_unique<ReplayThread>(
+        std::move(reader),
+        /* read_size */ 0x4000,
+        /* buffer_count */ 3,
+        &ready_signal_,
+        [](uint32_t return_code) {
+            ReplayThreadDoneMessage message{return_code};
+            EventDispatcher::send_message(message);
+        });
+}
+
+void RemoteView::stop() {
+    // This terminates the underlying chThread.
+    replay_thread_.reset();
+    transmitter_model.disable();
+    ready_signal_ = false;
+}
+
+void RemoteView::new_remote() {
+    save_remote();
+    init_remote();
+    refresh_ui();
+
+    // View needs to redraw to hide old buttons.
+    set_dirty();
+}
+
+void RemoteView::open_remote() {
+    auto open_view = nav_.push<FileLoadView>(".REM");
+    open_view->push_dir(u"REMOTES");
+    open_view->on_changed = [this](fs::path path) {
+        save_remote();
+        load_remote(std::move(path));
+        refresh_ui();
+    };
+}
+
+void RemoteView::init_remote() {
+    model_ = {"<Unnamed Remote>", {}};
+    reset_buttons();
+    set_remote_path(next_filename_matching_pattern(u"/REMOTES/REMOTE_????.REM"));
+    set_needs_save(false);
+
+    if (remote_path_.empty())
+        show_error("Couldn't make new remote file.");
+}
+
+bool RemoteView::load_remote(fs::path&& path) {
+    set_remote_path(std::move(path));
+    set_needs_save(false);
+    reset_buttons();
+    return model_.load(remote_path_);
+}
+
+void RemoteView::save_remote(bool show_errors) {
+    if (!needs_save_)
+        return;
+
+    bool ok = model_.save(remote_path_);
+    if (!ok && show_errors)
+        show_error("Save failed for:\n" + remote_path_.stem().string());
+
+    set_needs_save(false);
+}
+
+void RemoteView::rename_remote(const std::string& new_name) {
+    auto folder = remote_path_.parent_path();
+    auto ext = remote_path_.extension();
+    auto new_path = folder / new_name + ext;
+
+    if (file_exists(new_path)) {
+        show_error("Remote " + new_name + " already exists");
+        return;
+    }
+
+    // Rename file if there is one.
+    if (fs::file_exists(remote_path_))
+        rename_file(remote_path_, new_path);
+
+    set_remote_path(std::move(new_path));
+}
+
+void RemoteView::handle_replay_thread_done(uint32_t return_code) {
+    if (return_code == ReplayThread::END_OF_FILE) {
+        if (check_loop.value() && current_btn_) {
+            send_button(*current_btn_);
+            return;
+        }
+    }
+
+    /*
+    // TODO: This can happen when stopping an in-progress Tx.
+    if (return_code == ReplayThread::READ_ERROR)
+        show_error("Bad capture file.");
+    */
+
+    stop();
+}
+
+void RemoteView::set_remote_path(fs::path&& path) {
+    // Unfortunately, have to keep these two in sync because
+    // settings doesn't know about fs::path.
+    remote_path_ = std::move(path);
+    settings_.remote_path = remote_path_.string();
+}
+
+void RemoteView::show_error(const std::string& msg) const {
+    nav_.display_modal("Error", msg);
+}
+
 } /* namespace ui */
@@ -1,6 +1,5 @@
 /*
- * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
- * Copyright (C) 2018 Furrtek
+ * Copyright (C) 2023 Kyle Reed
 *
 * This file is part of PortaPack.
 *
@@ -21,42 +20,369 @@
 */

 #include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_spectrum.hpp"
 #include "ui_transmitter.hpp"
-#include "transmitter_model.hpp"
+
+#include "app_settings.hpp"
+#include "baseband_api.hpp"
+#include "bitmap.hpp"
+#include "file.hpp"
+#include "metadata_file.hpp"
+#include "optional.hpp"
+#include "radio_state.hpp"
+#include "replay_thread.hpp"
+
+#include <algorithm>
+#include <functional>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <vector>

 namespace ui {

+/* Maps icon index to bitmap. */
+class RemoteIcons {
+   public:
+    static constexpr const Bitmap* get(uint8_t index) {
+        if (index >= std::size(bitmaps_))
+            return bitmaps_[0];
+
+        return bitmaps_[index];
+    }
+
+    static constexpr size_t size() {
+        return std::size(bitmaps_);
+    }
+
+   private:
+    // NB: Icons need to be 16x16 or they won't fit corrently.
+    static constexpr std::array<const Bitmap*, 25> bitmaps_{
+        nullptr,
+        &bitmap_icon_fox,
+        &bitmap_icon_adsb,
+        &bitmap_icon_ais,
+        &bitmap_icon_aprs,
+        &bitmap_icon_btle,
+        &bitmap_icon_burger,
+        &bitmap_icon_camera,
+        &bitmap_icon_cwgen,
+        &bitmap_icon_dmr,
+        &bitmap_icon_file_image,
+        &bitmap_icon_lge,
+        &bitmap_icon_looking,
+        &bitmap_icon_memory,
+        &bitmap_icon_morse,
+        &bitmap_icon_nrf,
+        &bitmap_icon_notepad,
+        &bitmap_icon_rds,
+        &bitmap_icon_remote,
+        &bitmap_icon_setup,
+        &bitmap_icon_sleep,
+        &bitmap_icon_sonde,
+        &bitmap_icon_stealth,
+        &bitmap_icon_tetra,
+        &bitmap_icon_temperature};
+};
+
+// TODO: Use RGB colors instead?
+/* Maps color index to color. */
+class RemoteColors {
+   public:
+    static constexpr Color get(uint8_t index) {
+        if (index >= std::size(colors_))
+            return colors_[0];
+
+        return colors_[index];
+    }
+
+    static constexpr size_t size() {
+        return std::size(colors_);
+    }
+
+   private:
+    static constexpr std::array<Color, 21> colors_{
+        Color::black(),         // 0
+        Color::white(),         // 1
+        Color::darker_grey(),   // 2
+        Color::dark_grey(),     // 3
+        Color::grey(),          // 4
+        Color::light_grey(),    // 5
+        Color::red(),           // 6
+        Color::orange(),        // 7
+        Color::yellow(),        // 8
+        Color::green(),         // 9
+        Color::blue(),          // 10
+        Color::cyan(),          // 11
+        Color::magenta(),       // 12
+        Color::dark_red(),      // 13
+        Color::dark_orange(),   // 14
+        Color::dark_yellow(),   // 15
+        Color::dark_green(),    // 16
+        Color::dark_blue(),     // 17
+        Color::dark_cyan(),     // 18
+        Color::dark_magenta(),  // 19
+        Color::purple()};       // 20
+};
+
+/* Data model for a remote entry. */
+struct RemoteEntryModel {
+    std::filesystem::path path{};
+    std::string name{};
+    uint8_t icon = 0;
+    uint8_t bg_color = 0;
+    uint8_t fg_color = 0;
+    capture_metadata metadata{};
+    // TODO: start/end position for trimming.
+
+    std::string to_string() const;
+    static Optional<RemoteEntryModel> parse(std::string_view line);
+};
+
+/* Data model for a remote. */
+struct RemoteModel {
+    std::string name{};
+    std::vector<RemoteEntryModel> entries{};
+
+    bool delete_entry(const RemoteEntryModel* entry);
+    bool load(const std::filesystem::path& path);
+    bool save(const std::filesystem::path& path);
+};
+
+/* Button for the remote UI. */
+class RemoteButton : public NewButton {
+   public:
+    std::function<void(RemoteButton&)> on_select2{};
+    std::function<void(RemoteButton&)> on_long_select{};
+
+    RemoteButton(Rect parent_rect, RemoteEntryModel* entry);
+    RemoteButton(const RemoteButton&) = delete;
+    RemoteButton& operator=(const RemoteButton&) = delete;
+
+    void on_focus() override;
+    void on_blur() override;
+    bool on_key(KeyEvent key) override;
+    void paint(Painter& painter) override;
+
+    RemoteEntryModel* entry();
+    void set_entry(RemoteEntryModel* entry);
+
+   protected:
+    Style paint_style() override;
+
+   private:
+    // Hide because it's not used.
+    using NewButton::on_select;
+    RemoteEntryModel* entry_;
+};
+
+/* Settings container for remote. */
+struct RemoteSettings {
+    std::string remote_path{};
+};
+
+/* View for editing a remote entry button. */
+class RemoteEntryEditView : public View {
+   public:
+    std::function<void(RemoteEntryModel&)> on_delete{};
+
+    RemoteEntryEditView(NavigationView& nav, RemoteEntryModel& entry);
+
+    std::string title() const override { return "Edit Button"; };
+    void focus() override;
+
+   private:
+    RemoteEntryModel& entry_;
+
+    void refresh_ui();
+    void load_path(std::filesystem::path&& path);
+
+    Labels labels{
+        {{2 * 8, 1 * 16}, "Name:", Color::light_grey()},
+        {{2 * 8, 2 * 16}, "Path:", Color::light_grey()},
+        {{2 * 8, 3 * 16}, "Freq:", Color::light_grey()},
+        {{17 * 8, 3 * 16}, "MHz", Color::light_grey()},
+        {{2 * 8, 4 * 16}, "Rate:", Color::light_grey()},
+        {{2 * 8, 5 * 16}, "Icon:", Color::light_grey()},
+        {{2 * 8, 6 * 16}, "FG Color:", Color::light_grey()},
+        {{2 * 8, 7 * 16}, "BG Color:", Color::light_grey()},
+        {{8 * 8, 9 * 16}, "Button preview", Color::light_grey()},
+    };
+
+    TextField field_name{{8 * 8, 1 * 16, 20 * 8, 1 * 16}, {}};
+
+    TextField field_path{{8 * 8, 2 * 16, 20 * 8, 1 * 16}, {}};
+
+    FrequencyField field_freq{{8 * 8, 3 * 16}};
+
+    Text text_rate{{8 * 8, 4 * 16, 20 * 8, 1 * 16}, {}};
+
+    NumberField field_icon_index{
+        {8 * 8, 5 * 16},
+        2,
+        {0, RemoteIcons::size() - 1},
+        /*step*/ 1,
+        /*fill*/ ' ',
+        /*loop*/ true};
+
+    NumberField field_fg_color_index{
+        {11 * 8, 6 * 16},
+        2,
+        {0, RemoteColors::size() - 1},
+        /*step*/ 1,
+        /*fill*/ ' ',
+        /*loop*/ true};
+
+    NumberField field_bg_color_index{
+        {11 * 8, 7 * 16},
+        2,
+        {0, RemoteColors::size() - 1},
+        /*step*/ 1,
+        /*fill*/ ' ',
+        /*loop*/ true};
+
+    RemoteButton button_preview{
+        {10 * 8, 11 * 16 - 8, 10 * 8, 50},
+        &entry_};
+
+    NewButton button_delete{
+        {2 * 8, 16 * 16, 4 * 8, 2 * 16},
+        {},
+        &bitmap_icon_trash,
+        Color::red()};
+
+    Button button_done{{11 * 8, 16 * 16, 8 * 8, 2 * 16}, "Done"};
+};
+
+/* App that allows for buttons to be bound to captures for playback. */
 class RemoteView : public View {
   public:
    RemoteView(NavigationView& nav);
+    RemoteView(NavigationView& nav, std::filesystem::path path);
    ~RemoteView();

+    RemoteView(const RemoteView&) = delete;
+    RemoteView& operator=(const RemoteView&) = delete;
+
+    std::string title() const override { return "Remote"; };
    void focus() override;

-    std::string title() const override { return "Custom remote"; };
-
   private:
-    /*enum tx_modes {
-                IDLE = 0,
-                SINGLE,
-                SCAN
-        };
+    /* Creates the dynamic buttons. */
+    void create_buttons();
+    /* Resets all the pointers to null entries. */
+    void reset_buttons();
+    void refresh_ui();

-        tx_modes tx_mode = IDLE;
+    void add_button();
+    void edit_button(RemoteButton& btn);
+    void send_button(RemoteButton& btn);
+    void stop();
+    void new_remote();
+    void open_remote();
+    void init_remote();
+    bool load_remote(std::filesystem::path&& path);
+    void save_remote(bool show_errors = true);
+    void rename_remote(const std::string& new_name);
+    void handle_replay_thread_done(uint32_t return_code);
+    void set_needs_save(bool v = true) { needs_save_ = v; }
+    void set_remote_path(std::filesystem::path&& path);
+    bool is_sending() const { return replay_thread_ != nullptr; }
+    void show_error(const std::string& msg) const;

-        struct remote_layout_t {
-                Point position;
-                std::string text;
-        };
+    static constexpr Dim button_rows = 4;
+    static constexpr Dim button_cols = 3;
+    static constexpr uint8_t max_buttons = button_rows * button_cols;
+    static constexpr Dim button_area_height = 200;
+    static constexpr Dim button_width = screen_width / button_cols;
+    static constexpr Dim button_height = button_area_height / button_rows;

-        const std::array<remote_layout_t, 32> remote_layout { };*/
+    // This value is mysterious... why?
+    static constexpr uint32_t baseband_bandwidth = 2'500'000;

-    Labels labels{
-        {{1 * 8, 0}, "Work in progress...", Color::light_grey()}};
+    NavigationView& nav_;
+    RxRadioState radio_state_{};

-    Button button{
-        {60, 64, 120, 32},
-        "Exit"};
+    // Settings
+    RemoteSettings settings_{};
+    app_settings::SettingsManager app_settings_{
+        "tx_remote"sv,
+        app_settings::Mode::TX,
+        {
+            {"remote_path"sv, &settings_.remote_path},
+        }};
+
+    RemoteModel model_{};
+
+    bool needs_save_ = false;
+    std::string temp_buffer_{};
+    std::filesystem::path remote_path_{};
+    RemoteButton* current_btn_{};
+
+    const Point buttons_top_{0, 20};
+    std::vector<std::unique_ptr<RemoteButton>> buttons_{};
+
+    std::unique_ptr<ReplayThread> replay_thread_{};
+    bool ready_signal_{};  // Used to signal ReplayThread ready.
+
+    TextField field_title{
+        {0 * 8, 0 * 16 + 2, 30 * 8, 1 * 16},
+        {}};
+
+    TransmitterView2 tx_view{
+        {0 * 8, 17 * 16},
+        /*short_ui*/ true};
+
+    Checkbox check_loop{
+        {10 * 8, 17 * 16},
+        4,
+        "Loop",
+        /*small*/ true};
+
+    TextField field_filename{
+        {0 * 8, 18 * 16, 17 * 8, 1 * 16},
+        {}};
+
+    NewButton button_add{
+        {17 * 8 + 4, 17 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_add,
+        Color::orange(),
+        /*vcenter*/ true};
+
+    NewButton button_new{
+        {22 * 8, 17 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_new_file,
+        Color::dark_blue(),
+        /*vcenter*/ true};
+
+    NewButton button_open{
+        {26 * 8, 17 * 16, 4 * 8, 2 * 16},
+        "",
+        &bitmap_icon_load,
+        Color::dark_blue(),
+        /*vcenter*/ true};
+
+    spectrum::WaterfallView waterfall{};
+
+    MessageHandlerRegistration message_handler_replay_thread_error{
+        Message::ID::ReplayThreadDone,
+        [this](const Message* p) {
+            auto message = *reinterpret_cast<const ReplayThreadDoneMessage*>(p);
+            handle_replay_thread_done(message.return_code);
+        }};
+
+    MessageHandlerRegistration message_handler_fifo_signal{
+        Message::ID::RequestSignal,
+        [this](const Message* p) {
+            auto message = static_cast<const RequestSignalMessage*>(p);
+            if (message->signal == RequestSignalMessage::Signal::FillRequest) {
+                ready_signal_ = true;
+            }
+        }};
 };

 } /* namespace ui */
@@ -21,9 +21,13 @@
 */

 #include "ui_scanner.hpp"
+
+#include "optional.hpp"
 #include "ui_fileman.hpp"
+#include "ui_freqman.hpp"

 using namespace portapack;
+namespace fs = std::filesystem;

 namespace ui {

@@ -33,7 +37,7 @@ ScannerThread::ScannerThread(std::vector<rf::Frequency> frequency_list)
    create_thread();
 }

-ScannerThread::ScannerThread(const jammer::jammer_range_t& frequency_range, size_t def_step_hz)
+ScannerThread::ScannerThread(const scanner_range_t& frequency_range, size_t def_step_hz)
    : frequency_range_(frequency_range), def_step_hz_(def_step_hz) {
    _manual_search = true;
    create_thread();
@@ -79,7 +83,7 @@ void ScannerThread::set_freq_del(const rf::Frequency v) {
 }

 // Force a one-time forward or reverse frequency index change; OK to do this without pausing scan thread
-//(used when rotary encoder is turned)
+// (used when rotary encoder is turned)
 void ScannerThread::set_index_stepper(const int32_t v) {
    _index_stepper = v;
 }
@@ -122,7 +126,7 @@ void ScannerThread::run() {
                    if (force_one_step)
                        _index_stepper = 0;

-                    receiver_model.set_tuning_frequency(frequency_list_[frequency_index]);  // Retune
+                    receiver_model.set_target_frequency(frequency_list_[frequency_index]);  // Retune
                }
                message.freq = frequency_list_[frequency_index];
                message.range = frequency_index;  // Inform freq (for coloring purposes also!)
@@ -160,7 +164,7 @@ void ScannerThread::run() {
                    if (force_one_step)
                        _index_stepper = 0;

-                    receiver_model.set_tuning_frequency(frequency_range_.min + frequency_index * def_step_hz_);  // Retune
+                    receiver_model.set_target_frequency(frequency_range_.min + frequency_index * def_step_hz_);  // Retune
                }
                message.freq = frequency_range_.min + frequency_index * def_step_hz_;
                message.range = 0;  // Inform freq (for coloring purposes also!)
@@ -227,19 +231,39 @@ void ScannerView::handle_retune(int64_t freq, uint32_t freq_idx) {
    }

    if (!manual_search) {
-        if (frequency_list.size() > 0) {
-            text_current_index.set(to_string_dec_uint(freq_idx + 1, 3));
-        }
+        if (entries.size() > 0)
+            field_current_index.set_text(to_string_dec_uint(freq_idx + 1, 3));

-        if (freq_idx < description_list.size() && description_list[freq_idx].size() > 1)
-            desc_current_index.set(description_list[freq_idx]);  // Show description from file
+        if (freq_idx < entries.size() && entries[freq_idx].description.size() > 1)
+            text_current_desc.set(entries[freq_idx].description);  // Show description from file
        else
-            desc_current_index.set(desc_freq_list_scan);  // Show Scan file name (no description in file)
+            text_current_desc.set(loaded_filename());  // Show Scan file name (no description in file)
    }
 }

+void ScannerView::handle_encoder(EncoderEvent delta) {
+    auto index_step = delta > 0 ? 1 : -1;
+
+    if (scan_thread)
+        scan_thread->set_index_stepper(index_step);
+
+    // Restart browse timer when frequency changes.
+    if (browse_timer != 0)
+        browse_timer = 1;
+}
+
+std::string ScannerView::loaded_filename() const {
+    auto filename = freqman_file;
+    if (filename.length() > 23) {  // Truncate long file name.
+        filename.resize(22);
+        filename = filename + "+";
+    }
+
+    return filename;
+}
+
 void ScannerView::focus() {
-    field_mode.focus();
+    button_load.focus();
 }

 ScannerView::~ScannerView() {
@@ -251,102 +275,92 @@ ScannerView::~ScannerView() {
 }

 void ScannerView::show_max_index() {  // show total number of freqs to scan
-    text_current_index.set("---");
+    field_current_index.set_text("---");

-    if (frequency_list.size() == FREQMAN_MAX_PER_FILE) {
+    if (entries.size() == FREQMAN_MAX_PER_FILE) {
        text_max_index.set_style(&Styles::red);
        text_max_index.set("/ " + to_string_dec_uint(FREQMAN_MAX_PER_FILE) + " (DB MAX!)");
    } else {
        text_max_index.set_style(&Styles::grey);
-        text_max_index.set("/ " + to_string_dec_uint(frequency_list.size()));
+        text_max_index.set("/ " + to_string_dec_uint(entries.size()));
    }
 }

 ScannerView::ScannerView(
    NavigationView& nav)
-    : nav_{nav}, loaded_file_name{"SCANNER"} {
-    add_children({&labels,
-                  &field_lna,
-                  &field_vga,
-                  &field_rf_amp,
-                  &field_volume,
-                  &field_bw,
-                  &field_squelch,
-                  &field_browse_wait,
-                  &field_lock_wait,
-                  &button_load,
-                  &button_clear,
-                  &rssi,
-                  &text_current_index,
-                  &text_max_index,
-                  &desc_current_index,
-                  &big_display,
-                  &button_manual_start,
-                  &button_manual_end,
-                  &field_mode,
-                  &field_step,
-                  &button_manual_search,
-                  &button_pause,
-                  &button_dir,
-                  &button_audio_app,
-                  &button_mic_app,
-                  &button_add,
-                  &button_remove
-
+    : nav_{nav} {
+    add_children({
+        &labels,
+        &field_lna,
+        &field_vga,
+        &field_rf_amp,
+        &field_volume,
+        &field_bw,
+        &field_squelch,
+        &field_browse_wait,
+        &field_lock_wait,
+        &button_load,
+        &button_clear,
+        &rssi,
+        &field_current_index,
+        &text_max_index,
+        &text_current_desc,
+        &big_display,
+        &button_manual_start,
+        &button_manual_end,
+        &field_mode,
+        &field_step,
+        &button_manual_search,
+        &button_pause,
+        &button_dir,
+        &button_audio_app,
+        &button_mic_app,
+        &button_add,
+        &button_remove,
    });

    // Populate option text for these fields
    freqman_set_modulation_option(field_mode);
    freqman_set_step_option(field_step);

-    // Default starting modulation (these may be overridden in SCANNER.TXT)
-    change_mode(AM_MODULATION);              // Default modulation
-    field_mode.set_by_value(AM_MODULATION);  // Reflect the mode into the manual selector
-    field_step.set_by_value(9000);           // Default step interval (Hz)
+    // Default starting modulation (from saved App Settings if enabled, and may be overridden in SCANNER.TXT)
+    field_mode.set_by_value((OptionsField::value_t)receiver_model.modulation());  // Reflect the mode into the manual selector
+    field_step.set_by_value(receiver_model.frequency_step());                     // Default step interval (Hz)
+    change_mode((freqman_index_t)field_mode.selected_index_value());

-    // FUTURE: perhaps additional settings should be stored in persistent memory vs using defaults
-    // HELPER: Pre-setting a manual range, based on stored frequency
-    rf::Frequency stored_freq = persistent_memory::tuned_frequency();
-    frequency_range.min = stored_freq - 1000000;
    button_manual_start.set_text(to_string_short_freq(frequency_range.min));
-    frequency_range.max = stored_freq + 1000000;
    button_manual_end.set_text(to_string_short_freq(frequency_range.max));

-    // Button to load txt files from the FREQMAN folder
+    // Button to load a Freqman file.
    button_load.on_select = [this, &nav](Button&) {
        auto open_view = nav.push<FileLoadView>(".TXT");
-        open_view->on_changed = [this](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
+        open_view->push_dir(freqman_dir);
+        open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                scan_pause();
-                // get the filename without txt extension so we can use load_freqman_file fcn
-                std::string str_file_name = new_file_path.stem().string();
-                frequency_file_load(str_file_name, true);
+                frequency_file_load(new_file_path);
            } else {
-                nav_.display_modal("LOAD ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
+                nav.display_modal("LOAD ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
            }
        };
    };

-    // Button to clear in-memory frequency list
+    // Button to clear in-memory frequency list.
    button_clear.on_select = [this, &nav](Button&) {
-        if (scan_thread && frequency_list.size()) {
+        if (scan_thread && entries.size()) {
            scan_thread->stop();  // STOP SCANNER THREAD
-            frequency_list.clear();
-            description_list.clear();
+            entries.clear();

            show_max_index();  // UPDATE new list size on screen
-            text_current_index.set("");
-            desc_current_index.set(desc_freq_list_scan);
+            field_current_index.set_text("");
+            text_current_desc.set(loaded_filename());
            scan_thread->set_freq_lock(0);  // Reset the scanner lock

            // FUTURE: Consider switching to manual search mode automatically after clear (but would need to validate freq range)
        }
    };

-    // Button to configure starting frequency for a manual range search
+    // Button to configure starting frequency for a manual range search.
    button_manual_start.on_select = [this, &nav](Button& button) {
        auto new_view = nav_.push<FrequencyKeypadView>(frequency_range.min);
        new_view->on_changed = [this, &button](rf::Frequency f) {
@@ -355,7 +369,7 @@ ScannerView::ScannerView(
        };
    };

-    // Button to configure ending frequency for a manual range search
+    // Button to configure ending frequency for a manual range search.
    button_manual_end.on_select = [this, &nav](Button& button) {
        auto new_view = nav.push<FrequencyKeypadView>(frequency_range.max);
        new_view->on_changed = [this, &button](rf::Frequency f) {
@@ -364,7 +378,7 @@ ScannerView::ScannerView(
        };
    };

-    // Button to pause/resume scan (note that some other buttons will trigger resume also)
+    // Button to pause/resume scan (note that some other buttons will trigger resume also).
    button_pause.on_select = [this](ButtonWithEncoder&) {
        if (userpause)
            user_resume();
@@ -375,48 +389,43 @@ ScannerView::ScannerView(
        }
    };

-    // Encoder dial causes frequency change when focus is on pause button
+    // Encoder dial causes frequency change when focus is on pause button or current index.
    button_pause.on_change = [this]() {
-        int32_t encoder_delta{(button_pause.get_encoder_delta() > 0) ? 1 : -1};
-
-        if (scan_thread)
-            scan_thread->set_index_stepper(encoder_delta);
-
-        // Restart browse timer when frequency changes
-        if (browse_timer != 0)
-            browse_timer = 1;
-
+        handle_encoder(button_pause.get_encoder_delta());
        button_pause.set_encoder_delta(0);
    };
+    field_current_index.on_encoder_change = [this](TextField&, EncoderEvent delta) {
+        handle_encoder(delta);
+    };

    // Button to switch to Audio app
    button_audio_app.on_select = [this](Button&) {
        if (scan_thread)
            scan_thread->stop();
-        nav_.pop();
-        nav_.push<AnalogAudioView>();
+        auto settings = receiver_model.settings();
+        settings.frequency_step = field_step.selected_index_value();
+        nav_.replace<AnalogAudioView>(settings);
    };

    // Button to switch to Mic app
    button_mic_app.on_select = [this](Button&) {
        if (scan_thread)
            scan_thread->stop();
-        nav_.pop();
-        nav_.push<MicTXView>();
+        // MicTX wants Modulation and Bandwidth overrides, but that's only stored on the RX model.
+        nav_.replace<MicTXView>(receiver_model.settings());
    };

    // Button to delete current frequency from scan Freq List
    button_remove.on_select = [this](Button&) {
-        if (scan_thread && (frequency_list.size() > current_index)) {
+        if (scan_thread && (entries.size() > current_index)) {
            scan_thread->set_scanning(false);  // PAUSE Scanning if necessary

-            // Remove frequency from the Freq List in memory (it is not removed from the file)
-            scan_thread->set_freq_del(frequency_list[current_index]);
-            description_list.erase(description_list.begin() + current_index);
-            frequency_list.erase(frequency_list.begin() + current_index);
+            // Remove frequency from the Freq List in memory (it is not removed from the file).
+            scan_thread->set_freq_del(entries[current_index].freq);
+            entries.erase(entries.begin() + current_index);

            show_max_index();               // UPDATE new list size on screen
-            desc_current_index.set("");     // Clean up description (cosmetic detail)
+            text_current_desc.set("");      // Clean up description (cosmetic detail)
            scan_thread->set_freq_lock(0);  // Reset the scanner lock
        }
    };
@@ -435,19 +444,21 @@ ScannerView::ScannerView(
            manual_search = false;  // Switch to List Scan mode
        }

-        audio::output::stop();
-
-        if (scan_thread)
-            scan_thread->stop();  // STOP SCANNER THREAD
-
-        if (userpause)  // If user-paused, resume
-            user_resume();
-
-        start_scan_thread();  // RESTART SCANNER THREAD in selected mode
+        restart_scan();
    };

    // Mode field was changed (AM/NFM/WFM)
    field_mode.on_change = [this](size_t, OptionsField::value_t v) {
+        static freqman_index_t last_mode = AM_MODULATION;
+        // unsupported SPEC mode fix
+        if (v == SPEC_MODULATION) {
+            if (last_mode == AM_MODULATION)
+                v = WFM_MODULATION;
+            else
+                v = AM_MODULATION;
+            field_mode.set_selected_index(v);
+        }
+        last_mode = v;
        receiver_model.disable();
        baseband::shutdown();
        change_mode((freqman_index_t)v);
@@ -458,19 +469,10 @@ ScannerView::ScannerView(

    // Step field was changed (Hz) -- only affects manual Search mode
    field_step.on_change = [this](size_t, OptionsField::value_t v) {
-        (void)v;  // prevent compiler Unused warning
+        receiver_model.set_frequency_step(v);

-        if (manual_search && scan_thread) {
-            // Restart scan thread with new step value
-            scan_thread->stop();  // STOP SCANNER THREAD
-
-            // Resuming pause automatically
-            // FUTURE: Consider whether we should stay in Pause mode...
-            if (userpause)  // If user-paused, resume
-                user_resume();
-
-            start_scan_thread();  // RESTART SCANNER THREAD in Manual Search mode
-        }
+        if (manual_search && scan_thread)
+            restart_scan();
    };

    // Button to toggle Forward/Reverse
@@ -486,178 +488,121 @@ ScannerView::ScannerView(

    // Button to add current frequency (found during Search) to the Scan Frequency List
    button_add.on_select = [this](Button&) {
-        File scanner_file;
-        const std::string freq_file_path = "FREQMAN/" + loaded_file_name + ".TXT";
-        auto result = scanner_file.open(freq_file_path);  // First search if freq is already in txt
+        FreqmanDB db;
+        if (db.open(get_freqman_path(freqman_file), /*create*/ true)) {
+            freqman_entry entry{
+                .frequency_a = current_frequency,
+                .type = freqman_type::Single,
+            };

-        if (!result.is_valid()) {
-            const std::string frequency_to_add = "f=" + to_string_dec_uint(current_frequency / 1000) + to_string_dec_uint(current_frequency % 1000UL, 3, '0');
-
-            bool found = false;
-            constexpr size_t buffer_size = 1024;
-            char buffer[buffer_size];
-
-            for (size_t pointer = 0, freq_str_idx = 0; pointer < scanner_file.size(); pointer += buffer_size) {
-                size_t adjusted_buffer_size;
-                if (pointer + buffer_size >= scanner_file.size()) {
-                    memset(buffer, 0, sizeof(buffer));
-                    adjusted_buffer_size = scanner_file.size() - pointer;
-                } else {
-                    adjusted_buffer_size = buffer_size;
-                }
-
-                scanner_file.seek(pointer);
-                scanner_file.read(buffer, adjusted_buffer_size);
-
-                for (size_t i = 0; i < adjusted_buffer_size; ++i) {
-                    if (buffer[i] == frequency_to_add.data()[freq_str_idx]) {
-                        ++freq_str_idx;
-                        if (freq_str_idx >= frequency_to_add.size()) {
-                            found = true;
-                            break;
-                        }
-                    } else {
-                        freq_str_idx = 0;
-                    }
-                }
-
-                if (found) {
-                    break;
-                }
-            }
+            // Look for existing entry with same frequency.
+            auto it = db.find_entry([&entry](const auto& e) {
+                return e.frequency_a == entry.frequency_a;
+            });
+            auto found = (it != db.end());

            if (found) {
                nav_.display_modal("Error", "Frequency already exists");
-                bigdisplay_update(-1);  // After showing an error
+                bigdisplay_update(-1);  // Need to poke this control after displaying modal?
            } else {
-                scanner_file.append(freq_file_path);  // Second: append if it is not there
-                scanner_file.write_line(frequency_to_add);
-
+                db.append_entry(entry);
                // Add to frequency_list in memory too, since we can now switch back from manual mode
-                // Note that we are allowing freqs to be added to file (code above) that exceed the max count we can load into memory
-                if (frequency_list.size() < FREQMAN_MAX_PER_FILE) {
-                    frequency_list.push_back(current_frequency);
-                    description_list.push_back("");
-
+                // Note that we are allowing freqs to be added to file (code above) that exceed the
+                // max count we can load into memory.
+                if (entries.size() < FREQMAN_MAX_PER_FILE) {
+                    entries.push_back({current_frequency, ""});
                    show_max_index();  // Display updated frequency list size
                }
            }
        } else {
-            nav_.display_modal("Error", "Cannot open " + loaded_file_name + ".TXT\nfor appending freq.");
-            bigdisplay_update(-1);  // After showing an error
+            nav_.display_modal("Error", "Cannot open " + freqman_file + ".TXT\nfor appending freq.");
+            bigdisplay_update(-1);  // Need to poke this control after displaying modal?
        }
    };

    // PRE-CONFIGURATION:
    field_browse_wait.on_change = [this](int32_t v) { browse_wait = v; };
-    field_browse_wait.set_value(5);
+    field_browse_wait.set_value(browse_wait);

    field_lock_wait.on_change = [this](int32_t v) { lock_wait = v; };
-    field_lock_wait.set_value(2);
+    field_lock_wait.set_value(lock_wait);

    field_squelch.on_change = [this](int32_t v) { squelch = v; };
-    field_squelch.set_value(-10);
+    field_squelch.set_value(squelch);

-    // LEARN FREQUENCIES
-    std::string scanner_txt = "SCANNER";
-    frequency_file_load(scanner_txt);
+    // Disable squelch on the model because RSSI handler is where the
+    // actual squelching is applied for this app.
+    receiver_model.set_squelch_level(0);
+
+    // LOAD FREQUENCIES
+    frequency_file_load(get_freqman_path(freqman_file));
 }

-void ScannerView::frequency_file_load(std::string file_name, bool stop_all_before) {
-    bool found_range{false};
-    bool found_single{false};
-    freqman_index_t def_mod_index{-1};
-    freqman_index_t def_bw_index{-1};
-    freqman_index_t def_step_index{-1};
+void ScannerView::frequency_file_load(const fs::path& path) {
+    freqman_index_t def_mod_index{freqman_invalid_index};
+    freqman_index_t def_bw_index{freqman_invalid_index};
+    freqman_index_t def_step_index{freqman_invalid_index};

-    // stop everything running now if required
-    if (stop_all_before) {
-        scan_thread->stop();
-        frequency_list.clear();  // clear the existing frequency list (expected behavior)
-        description_list.clear();
+    FreqmanDB db;
+    if (!db.open(path)) {
+        text_current_desc.set("NO " + path.filename().string());
+        return;
    }

-    if (load_freqman_file(file_name, database)) {
-        loaded_file_name = file_name;                            // keep loaded filename in memory
-        for (auto& entry : database) {                           // READ LINE PER LINE
-            if (frequency_list.size() < FREQMAN_MAX_PER_FILE) {  // We got space!
-                //
-                // Get modulation & bw & step from file if specified
-                // Note these values could be different for each line in the file, but we only look at the first one
-                //
-                // Note that freqman requires a very specific string for these parameters,
-                // so check syntax in frequency file if specified value isn't being loaded
-                //
-                if (def_mod_index == -1)
-                    def_mod_index = entry.modulation;
+    entries.clear();
+    freqman_file = path.stem().string();
+    Optional<scanner_range_t> range;

-                if (def_bw_index == -1)
-                    def_bw_index = entry.bandwidth;
+    for (auto entry : db) {
+        if (is_invalid(def_mod_index))
+            def_mod_index = entry.modulation;

-                if (def_step_index == -1)
-                    def_step_index = entry.step;
+        if (is_invalid(def_bw_index))
+            def_bw_index = entry.bandwidth;

-                // Get frequency
-                if (entry.type == RANGE) {
-                    if (!found_range) {
-                        // Set Start & End Search Range instead of populating the small in-memory frequency table
-                        // NOTE:  There may be multiple single frequencies in file, but only one search range is supported.
-                        found_range = true;
-                        frequency_range.min = entry.frequency_a;
-                        button_manual_start.set_text(to_string_short_freq(frequency_range.min));
-                        frequency_range.max = entry.frequency_b;
-                        button_manual_end.set_text(to_string_short_freq(frequency_range.max));
-                    }
-                } else if (entry.type == SINGLE) {
-                    found_single = true;
-                    frequency_list.push_back(entry.frequency_a);
-                    description_list.push_back(entry.description);
-                } else if (entry.type == HAMRADIO) {
-                    // For HAM repeaters, add both receive & transmit frequencies to scan list and modify description
-                    // (FUTURE fw versions might handle these differently)
-                    found_single = true;
-                    frequency_list.push_back(entry.frequency_a);
-                    description_list.push_back("R:" + entry.description);
+        if (is_invalid(def_step_index))
+            def_step_index = entry.step;

-                    if ((entry.frequency_a != entry.frequency_b) &&
-                        (frequency_list.size() < FREQMAN_MAX_PER_FILE)) {
-                        frequency_list.push_back(entry.frequency_b);
-                        description_list.push_back("T:" + entry.description);
-                    }
-                }
-            } else {
-                break;  // No more space: Stop reading the txt file !
-            }
+        switch (entry.type) {
+            case freqman_type::Single:
+                entries.push_back({entry.frequency_a, entry.description});
+                break;
+            case freqman_type::HamRadio:
+                entries.push_back({entry.frequency_a, "R: " + entry.description});
+                entries.push_back({entry.frequency_b, "T: " + entry.description});
+                break;
+            case freqman_type::Range:
+                // NB: Only the first range will be loaded.
+                if (!range)
+                    range = {entry.frequency_a, entry.frequency_b};
+                break;
+            default:
+                break;
        }
-    } else {
-        loaded_file_name = "SCANNER";  // back to the default frequency file
-        desc_current_index.set(" NO " + file_name + ".TXT FILE ...");
+
+        if (entries.size() >= FREQMAN_MAX_PER_FILE)
+            break;
    }

-    desc_freq_list_scan = loaded_file_name + ".TXT";
-    if (desc_freq_list_scan.length() > 23) {  // Truncate description and add ellipses if long file name
-        desc_freq_list_scan.resize(20);
-        desc_freq_list_scan = desc_freq_list_scan + "...";
-    }
+    if (is_valid(def_mod_index) && def_mod_index != (freqman_index_t)field_mode.selected_index_value())
+        field_mode.set_by_value(def_mod_index);

-    if ((def_mod_index != -1) && (def_mod_index != (freqman_index_t)field_mode.selected_index_value()))
-        field_mode.set_by_value(def_mod_index);  // Update mode (also triggers a change callback that disables & reenables RF background)
-
-    if (def_bw_index != -1)  // Update BW if specified in file
+    if (is_valid(def_bw_index))
        field_bw.set_selected_index(def_bw_index);

-    if (def_step_index != -1)  // Update step if specified in file
+    if (is_valid(def_step_index))
        field_step.set_selected_index(def_step_index);

-    audio::output::stop();
+    // Found range, set it and update UI.
+    if (range) {
+        frequency_range = *range;
+        button_manual_start.set_text(to_string_short_freq(frequency_range.min));
+        button_manual_end.set_text(to_string_short_freq(frequency_range.max));
+    }

-    if (userpause)  // If user-paused, resume
-        user_resume();
-
-    // Scan list if we found one, otherwise do manual range search
-    manual_search = !found_single;
-
-    start_scan_thread();
+    // Scan entries if any, otherwise do manual range search.
+    manual_search = entries.empty();
+    restart_scan();
 }

 void ScannerView::update_squelch_while_paused(int32_t max_db) {
@@ -746,7 +691,8 @@ void ScannerView::user_resume() {
    userpause = false;                                            // Resume scanning
 }

-void ScannerView::change_mode(freqman_index_t new_mod) {  // Before this, do a scan_thread->stop();  After this do a start_scan_thread()
+// Before this, do a scan_thread->stop();  After this do a start_scan_thread()
+void ScannerView::change_mode(freqman_index_t new_mod) {
    using option_t = std::pair<std::string, int32_t>;
    using options_t = std::vector<option_t>;
    options_t bw;
@@ -759,31 +705,22 @@ void ScannerView::change_mode(freqman_index_t new_mod) {  // Before this, do a s
            freqman_set_bandwidth_option(new_mod, field_bw);
            baseband::run_image(portapack::spi_flash::image_tag_am_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);
-            field_bw.set_by_value(0);
-            receiver_model.set_am_configuration(field_bw.selected_index_value());
+            field_bw.set_by_value(receiver_model.am_configuration());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_am_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(1750000);
            break;
-        case NFM_MODULATION:  // bw 16k (2) default
+        case NFM_MODULATION:
            freqman_set_bandwidth_option(new_mod, field_bw);
            baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
-            field_bw.set_by_value(2);
-            receiver_model.set_nbfm_configuration(field_bw.selected_index_value());
+            field_bw.set_by_value(receiver_model.nbfm_configuration());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_nbfm_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(1750000);
            break;
        case WFM_MODULATION:
            freqman_set_bandwidth_option(new_mod, field_bw);
            baseband::run_image(portapack::spi_flash::image_tag_wfm_audio);
            receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
-            field_bw.set_by_value(0);
-            receiver_model.set_wfm_configuration(field_bw.selected_index_value());
+            field_bw.set_by_value(receiver_model.wfm_configuration());
            field_bw.on_change = [this](size_t, OptionsField::value_t n) { receiver_model.set_wfm_configuration(n); };
-            receiver_model.set_sampling_rate(3072000);
-            receiver_model.set_baseband_bandwidth(2000000);
            break;
        default:
            break;
@@ -792,22 +729,38 @@ void ScannerView::change_mode(freqman_index_t new_mod) {  // Before this, do a s

 void ScannerView::start_scan_thread() {
    receiver_model.enable();
-    receiver_model.set_squelch_level(0);
    show_max_index();

    // Start Scanner Thread
-    // FUTURE: Consider passing additional control flags (fwd,userpause,etc) to scanner thread at start (perhaps in a data structure)
    if (manual_search) {
        button_manual_search.set_text("SCAN");  // Update meaning of Manual Scan button
-        desc_current_index.set(desc_freq_range_search);
+        text_current_desc.set("SEARCHING...");
        scan_thread = std::make_unique<ScannerThread>(frequency_range, field_step.selected_index_value());
    } else {
        button_manual_search.set_text("SRCH");  // Update meaning of Manual Scan button
-        desc_current_index.set(desc_freq_list_scan);
-        scan_thread = std::make_unique<ScannerThread>(frequency_list);
+        text_current_desc.set(loaded_filename());
+
+        // TODO: just pass ref to the thread?
+        std::vector<rf::Frequency> frequency_list;
+        frequency_list.reserve(entries.size());
+        for (const auto& entry : entries)
+            frequency_list.push_back(entry.freq);
+
+        scan_thread = std::make_unique<ScannerThread>(std::move(frequency_list));
    }

    scan_thread->set_scanning_direction(fwd);
 }

+void ScannerView::restart_scan() {
+    audio::output::stop();
+    if (scan_thread)  // STOP SCANNER THREAD
+        scan_thread->stop();
+
+    if (userpause)  // If user-paused, resume
+        user_resume();
+
+    start_scan_thread();  // RESTART SCANNER THREAD in selected mode
+}
+
 } /* namespace ui */
--- a/Show More
+++ b/Show More