Add Multi-Device Build Support to Release Workflows (#2978)

* Initial commit and pr for HackRF Pro (praline) arch-port to mayhem-firmware. Please see https://github.com/portapack-mayhem/mayhem-firmware/issues/2957. Added flash specifics for -DBOARD=PRALINE. This firmware only builds with toolchain v9.2.1 if hackrf codebase has -B arm in firmware/hackrf_usb/CMakeLists.txt.

* Updated CMakeLists.txt per coordination with @HtoToo. For -DBOARD=PRALINE FLASH_MB_SIZE and FLASH_MB_LIMIT_SIZE are now 4. Removed praline specific variable for FLASH limits.

* Updated chibios-portapack's board.cpp to support initialization of the HachRF-Pro (praline) FPGA. Added append_fpga_bitstream.py tool to ensure that praline_fgpa.bin bitstream can be appended to -DBOARD=PRALINE produced firmware. In order to ensure successful execution of append_fpga_bitstream.py to append the fpga bitstream we should expect that the bistsream will be located at 0x180000 in flash. This requires that FLASH_MB_LIMIT_SIZE must be 1.5, and FLASH_BYTES_LIMIT_SIZE must be 1535 * 1024. If we want to allow more or less space for the base firmware image sans the fpga bitstream the location of the bistream must be moved to a location other than 0x180000.

* Updated location of praline_fpga.bin bitstream to 0x380000 to allow more room for firmware. Firmware now has 3.5MB, or 2MB more available than before as coordinated with @HTotoo.

* Expanded #ifndef PRALINE to include og and r9 gpio and pin setup as coordinated with @HTotoo.

* Added note for PRALINE FLASH_MB_LIMIT_SIZE and FLASH_BYTES_LIMIT_SIZE to explain why we are using the 3.5 and 3584 values respectively as coordinated with @HTotoo.

* Next round of modifications derived heavily, if not entirely  from work done by @banandana at https://github.com/Banandana/mayhem-firmware. This commit should power on the HackRF Pro (praline) display, power on the fpga, and enable gpio, and provide debug utilties. There is still a lot of work to be done to fully enable the new praline board with this build and firmware architectural porting effort. However, hackrf-one boards do not seem to be adversely impacted by the #ifdef PRALINE statements, and CMakeLists updates, as far as I have been able to test.

* Ran format-code.sh. Updates for this commit are only due to formatting. Tested builds and they seem to work as exptected.

* Addressed fixes in firmware/application and firmware/baseband. Stream now flows to capture and looking glass. Issues were related to thread management. Issues were originally addressed by @banandana.

* Ran format-code.sh to allow for consistency with autoamted clang checks.

* Update hackrf ref repo to mayhem-portapack-hackrf next from https://github.com/portapack-mayhem/hackrf

* Addressed format edits necessary to pass clang-format check.

* Starting addressing Si5351 Clocks for radio sampling. These updates correctly set the Si5351 clock at start up. There appears to be an issue during runtime when testing with RX Test Init, Capture and Looking glass.

* Updated clock_manager.cpp to restore correct function introduced by @banandana when testing with Rx Test Init.

* Switched to using decimation for setting the sample rate without changing the Si5351 clock. This assumes that for the praline board Si5351 CLK0 runs at fixed 8 MHz (constant) and the FPGA decimates to get the desired sample rate. For example, for a 1 MHz sample rate -> Si5351 outputs 8 MHz, FPGA decimates by 8. There is still more work needed here, and potential verification that this is the correct way to operate with this new archteitecture.

* After deliberating on hackrf_usb hackrf_core.c and radio.c, and reviewing firmware/application/hw/si5351.cpp the original approach of using the aproach detailed in hackrf_core.c sample_rate_frac_set() lines 580-582, via the implementation in firmware/application/hw/si5351.cpp seems like the best place to continue testing efforts.

* Tested at ~2.4GHz (2.3 - 2.5) with lookgin glass and was able to receive signals. Added a Signal Path debug app to test gains, and readio mode (receive/transmit).

* Added two debug apps for the RFFC507x. Status View and Tuning View. This helped debug some of the potential issues with tuning.

* update submodule

* format code

* Small touch up merging latest next and ensuring build for HackRF One.

* Reverted edits to re: firmware/baseband/sd_over_usb/scsi.c and firmware/application/portapack.cpp. Source now builds, had to pull latest hackrf submodule.

* Skipped detect hardware for praline board to avoid backscreen in HackRF Pro praline board.

---------

Co-authored-by: gullradriel <gullradriel@users.noreply.github.com>

.clang-format

@@ -1,14 +1,13 @@
 ---
 BasedOnStyle: Chromium
-IndentWidth: '4'
-SortIncludes: 'false'
-AllowAllArgumentsOnNextLine: 'true'
+IndentWidth: 4
+SortIncludes: false
+AllowAllArgumentsOnNextLine: true
 ColumnLimit: 0
-Cpp11BracedListStyle: 'true'
-AllowShortLoopsOnASingleLine: 'true'
-AllowShortIfStatementsOnASingleLine: 'true'
+Cpp11BracedListStyle: true
+AllowShortLoopsOnASingleLine: true
+AllowShortIfStatementsOnASingleLine: true
 SpacesInLineCommentPrefix:
   Minimum: 1
   Maximum: 1
-
 ...

.github/workflows/create_nightly_release.yml

@@ -3,7 +3,7 @@ name: Nightly Release
 on:
   schedule:
     - cron: "0 0 * * *"
-    
+
   workflow_dispatch:
 
 jobs:
@@ -21,27 +21,36 @@ jobs:
         id: should_run
         continue-on-error: true
         run: test -z $(git rev-list  --after="24 hours" ${{ github.sha }}) && echo "should_run=false" >> $GITHUB_OUTPUT
+
   build:
     needs: check_date
     if: ${{ needs.check_date.outputs.should_run != 'false' }}
     runs-on: ubuntu-latest
+    name: build (${{ matrix.device_name }})
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - device: default
+            device_name: HackRF
+            cmake_args: ""
+            artifact_suffix: "_hackrf"
+          - device: portarf
+            device_name: PortaRF
+            cmake_args: "-DFLASH_MB_SIZE=2 -DFLASH_MB_LIMIT_SIZE=2"
+            artifact_suffix: "_portarf"
+          - device: hpro
+            device_name: HackRF Pro
+            cmake_args: "-DBOARD=PRALINE"
+            artifact_suffix: "_hpro"
     steps:
-      - name: Get current date
-        id: date
-        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
       - name: Get version date
         id: version_date
         run: echo "date=n_$(date +'%y%m%d')" >> $GITHUB_OUTPUT
-      - name: Checkout 
+      - name: Checkout
         uses: actions/checkout@master
         with:
           fetch-depth: 0
-          #ref: next
-          # The branch, tag or SHA to checkout. When checking out the repository that
-          # triggered a workflow, this defaults to the reference or SHA for that event.
-          # Otherwise, uses the default branch.
-          # https://github.com/actions/checkout
-          # So scheduled runs will use the default branch (next) but its now possible to trigger a workflow from another branch
           submodules: true
       - name: Git Sumbodule Update
         run: |
@@ -51,10 +60,10 @@ jobs:
       - name: Make build folder
         run: mkdir ${{ github.workspace }}/build
       - name: Run the Docker image
-        run: docker run -e VERSION_STRING=${{ steps.version_date.outputs.date }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+        run: docker run -e VERSION_STRING=${{ steps.version_date.outputs.date }} -i -v ${{ github.workspace }}:/havoc portapack-dev ${{ matrix.cmake_args }}
       - name: Create Small SD Card ZIP - No World Map
         run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_nightly_${{ steps.version_date.outputs.date }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard-no-map.zip . && cd ..
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_nightly_${{ steps.version_date.outputs.date }}${{ matrix.artifact_suffix }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard-no-map.zip . && cd ..
       - name: Download world map
         run: |
           wget https://github.com/portapack-mayhem/mayhem-firmware/releases/download/world_map/world_map.zip
@@ -69,7 +78,47 @@ jobs:
           zip -j firmware.zip build/firmware/portapack-mayhem-firmware.bin && cd flashing && zip -r ../firmware.zip *
       - name: Create SD Card ZIP
         run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_nightly_${{ steps.version_date.outputs.date }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard.zip . && cd ..
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_nightly_${{ steps.version_date.outputs.date }}${{ matrix.artifact_suffix }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard.zip . && cd ..
+      - name: Upload firmware zip artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: firmware-${{ matrix.device }}
+          path: ./firmware.zip
+      - name: Upload SD card artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: sdcard-${{ matrix.device }}
+          path: ./sdcard.zip
+      - name: Upload SD card no-map artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: sdcard-no-map-${{ matrix.device }}
+          path: ./sdcard-no-map.zip
+      - name: Upload OCI tar artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: oci-tar-${{ matrix.device }}
+          path: build/firmware/portapack-mayhem_OCI.ppfw.tar
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get current date
+        id: date
+        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
+      - name: Get version date
+        id: version_date
+        run: echo "date=n_$(date +'%y%m%d')" >> $GITHUB_OUTPUT
+      - name: Checkout
+        uses: actions/checkout@master
+        with:
+          fetch-depth: 0
+          submodules: true
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
       - name: Create changelog
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -96,43 +145,114 @@ jobs:
             ${{ steps.changelog.outputs.content }}
           draft: false
           prerelease: true
-      - name: Upload Firmware TAR Asset
-        id: upload-firmware-tar-asset 
+      # Default device assets
+      - name: Upload Default Firmware TAR Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: build/firmware/portapack-mayhem_OCI.ppfw.tar
-          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_OCI.ppfw.tar
+          asset_path: artifacts/oci-tar-default/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_hackrf_mayhem_nightly_${{ steps.version_date.outputs.date }}.ppfw.tar
           asset_content_type: application/x-tar
-      - name: Upload Firmware Asset
-        id: upload-firmware-asset 
+      - name: Upload Default Firmware Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./firmware.zip
-          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_FIRMWARE.zip
+          asset_path: artifacts/firmware-default/firmware.zip
+          asset_name: FIRMWARE_hackrf_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
           asset_content_type: application/zip
-      - name: Upload SD Card Assets
-        id: upload-sd-card-asset 
+      - name: Upload Default SD Card Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./sdcard.zip
-          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_COPY_TO_SDCARD.zip
+          asset_path: artifacts/sdcard-default/sdcard.zip
+          asset_name: COPY_TO_SDCARD_hackrf_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
           asset_content_type: application/zip
-      - name: Upload SD Card Assets - No Map
-        id: upload-sd-card-asset-no-map 
+      - name: Upload Default 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_path: artifacts/sdcard-no-map-default/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_hackrf_mayhem_nightly_${{ steps.version_date.outputs.date }}-no-world-map.zip
+          asset_content_type: application/zip
+      # PortaRF device assets
+      - name: Upload PortaRF Firmware TAR Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/oci-tar-portarf/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_portarf_mayhem_nightly_${{ steps.version_date.outputs.date }}.ppfw.tar
+          asset_content_type: application/x-tar
+      - name: Upload PortaRF Firmware Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/firmware-portarf/firmware.zip
+          asset_name: FIRMWARE_portarf_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
+          asset_content_type: application/zip
+      - name: Upload PortaRF SD Card Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-portarf/sdcard.zip
+          asset_name: COPY_TO_SDCARD_portarf_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
+          asset_content_type: application/zip
+      - name: Upload PortaRF SD Card Asset - No Map
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-no-map-portarf/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_portarf_mayhem_nightly_${{ steps.version_date.outputs.date }}-no-world-map.zip
+          asset_content_type: application/zip
+      # HPro device assets
+      - name: Upload HPro Firmware TAR Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/oci-tar-hpro/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_hpro_mayhem_nightly_${{ steps.version_date.outputs.date }}.ppfw.tar
+          asset_content_type: application/x-tar
+      - name: Upload HPro Firmware Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/firmware-hpro/firmware.zip
+          asset_name: FIRMWARE_hpro_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
+          asset_content_type: application/zip
+      - name: Upload HPro SD Card Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-hpro/sdcard.zip
+          asset_name: COPY_TO_SDCARD_hpro_mayhem_nightly_${{ steps.version_date.outputs.date }}.zip
+          asset_content_type: application/zip
+      - name: Upload HPro SD Card Asset - No Map
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-no-map-hpro/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_hpro_mayhem_nightly_${{ steps.version_date.outputs.date }}-no-world-map.zip
           asset_content_type: application/zip

.github/workflows/create_stable_release.yml

@@ -1,25 +1,36 @@
 name: Stable Release
 
-on:    
+on:
   workflow_dispatch:
 
 jobs:
   build:
     runs-on: ubuntu-latest
+    name: build (${{ matrix.device_name }})
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - device: default
+            device_name: HackRF
+            cmake_args: ""
+            artifact_suffix: "_hackrf"
+          - device: portarf
+            device_name: PortaRF
+            cmake_args: "-DFLASH_MB_SIZE=2 -DFLASH_MB_LIMIT_SIZE=2"
+            artifact_suffix: "_portarf"
+          - device: hpro
+            device_name: HackRF Pro
+            cmake_args: "-DBOARD=PRALINE"
+            artifact_suffix: "_hpro"
     steps:
       - name: Get current date
         id: date
         run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
-      - name: Checkout 
+      - name: Checkout
         uses: actions/checkout@master
         with:
           fetch-depth: 0
-          #ref: next
-          # The branch, tag or SHA to checkout. When checking out the repository that
-          # triggered a workflow, this defaults to the reference or SHA for that event.
-          # Otherwise, uses the default branch.
-          # https://github.com/actions/checkout
-          # So scheduled runs will use the default branch (next) but its now possible to trigger a workflow from another branch
           submodules: true
       - name: Git Sumbodule Update
         run: |
@@ -27,18 +38,15 @@ jobs:
       - name: Get version
         id: version
         run: echo "version=$(cat .github/workflows/version.txt)" >> $GITHUB_OUTPUT
-      - name: Get past version
-        id: past_version
-        run: echo "past_version=$(cat .github/workflows/past_version.txt)" >> $GITHUB_OUTPUT
       - name: Build the Docker image
         run: docker build -t portapack-dev -f dockerfile-nogit . --tag my-image-name:$(date +%s)
       - name: Make build folder
         run: mkdir ${{ github.workspace }}/build
       - name: Run the Docker image
-        run: docker run -e VERSION_STRING=${{ steps.version.outputs.version }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+        run: docker run -e VERSION_STRING=${{ steps.version.outputs.version }} -i -v ${{ github.workspace }}:/havoc portapack-dev ${{ matrix.cmake_args }}
       - name: Create Small SD Card ZIP - No World Map
         run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_${{ steps.version.outputs.version }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard-no-map.zip . && cd ..
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_${{ steps.version.outputs.version }}${{ matrix.artifact_suffix }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard-no-map.zip . && cd ..
       - name: Download world map
         run: |
           wget https://github.com/portapack-mayhem/mayhem-firmware/releases/download/world_map/world_map.zip
@@ -53,7 +61,50 @@ jobs:
           zip -j firmware.zip build/firmware/portapack-mayhem-firmware.bin && cd flashing && zip -r ../firmware.zip *
       - name: Create SD Card ZIP
         run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_${{ steps.version.outputs.version }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard.zip . && cd ..
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-mayhem-firmware.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && cp build/firmware/portapack-mayhem_OCI.ppfw.tar sdcard/FIRMWARE/mayhem_${{ steps.version.outputs.version }}${{ matrix.artifact_suffix }}_OCI.ppfw.tar && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && cp build/firmware/standalone/*/*.ppmp sdcard/APPS && cd sdcard && zip -r ../sdcard.zip . && cd ..
+      - name: Upload firmware zip artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: firmware-${{ matrix.device }}
+          path: ./firmware.zip
+      - name: Upload SD card artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: sdcard-${{ matrix.device }}
+          path: ./sdcard.zip
+      - name: Upload SD card no-map artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: sdcard-no-map-${{ matrix.device }}
+          path: ./sdcard-no-map.zip
+      - name: Upload OCI tar artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: oci-tar-${{ matrix.device }}
+          path: build/firmware/portapack-mayhem_OCI.ppfw.tar
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get current date
+        id: date
+        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
+      - name: Checkout
+        uses: actions/checkout@master
+        with:
+          fetch-depth: 0
+          submodules: true
+      - name: Get version
+        id: version
+        run: echo "version=$(cat .github/workflows/version.txt)" >> $GITHUB_OUTPUT
+      - name: Get past version
+        id: past_version
+        run: echo "past_version=$(cat .github/workflows/past_version.txt)" >> $GITHUB_OUTPUT
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
       - name: Create changelog
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -78,7 +129,7 @@ jobs:
             ## Release notes
             ###  Revision (${{ steps.version.outputs.version }}):
             ${{ steps.changelog.outputs.content }}
-            
+
             **Full Changelog**: https://github.com/portapack-mayhem/mayhem-firmware/compare/${{ steps.past_version.outputs.past_version }}...${{ steps.version.outputs.version }}
 
             ## Installation
@@ -90,44 +141,114 @@ jobs:
             For certain functionality, like external apps, the world map, GPS simulator, and others you need to uncompress (using [7-zip](https://www.7-zip.org/download.html)) the files from `mayhem_vX.Y.Z_COPY_TO_SDCARD.zip` to a FAT32 formatted MicroSD card.
           draft: true
           prerelease: false
-      - name: Upload Firmware TAR Asset
-        id: upload-firmware-tar-asset 
+      # Default device assets
+      - name: Upload Default Firmware TAR Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: build/firmware/portapack-mayhem_OCI.ppfw.tar
-          asset_name: mayhem_${{ steps.version.outputs.version }}_OCI.ppfw.tar
+          asset_path: artifacts/oci-tar-default/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_hackrf_mayhem_${{ steps.version.outputs.version }}.ppfw.tar
           asset_content_type: application/x-tar
-      - name: Upload Firmware Asset
-        id: upload-firmware-asset 
+      - name: Upload Default Firmware Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./firmware.zip
-          asset_name: mayhem_${{ steps.version.outputs.version }}_FIRMWARE.zip
+          asset_path: artifacts/firmware-default/firmware.zip
+          asset_name: FIRMWARE_hackrf_mayhem_${{ steps.version.outputs.version }}.zip
           asset_content_type: application/zip
-      - name: Upload SD Card Assets
-        id: upload-sd-card-asset 
+      - name: Upload Default SD Card Asset
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./sdcard.zip
-          asset_name: mayhem_${{ steps.version.outputs.version }}_COPY_TO_SDCARD.zip
+          asset_path: artifacts/sdcard-default/sdcard.zip
+          asset_name: COPY_TO_SDCARD_hackrf_mayhem_${{ steps.version.outputs.version }}.zip
           asset_content_type: application/zip
-      - name: Upload SD Card Assets - No Map
-        id: upload-sd-card-asset-no-map 
+      - name: Upload Default 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_path: artifacts/sdcard-no-map-default/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_hackrf_mayhem_${{ steps.version.outputs.version }}-no-world-map.zip
+          asset_content_type: application/zip
+      # PortaRF device assets
+      - name: Upload PortaRF Firmware TAR Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/oci-tar-portarf/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_portarf_mayhem_${{ steps.version.outputs.version }}.ppfw.tar
+          asset_content_type: application/x-tar
+      - name: Upload PortaRF Firmware Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/firmware-portarf/firmware.zip
+          asset_name: FIRMWARE_portarf_mayhem_${{ steps.version.outputs.version }}.zip
+          asset_content_type: application/zip
+      - name: Upload PortaRF SD Card Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-portarf/sdcard.zip
+          asset_name: COPY_TO_SDCARD_portarf_mayhem_${{ steps.version.outputs.version }}.zip
+          asset_content_type: application/zip
+      - name: Upload PortaRF SD Card Asset - No Map
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-no-map-portarf/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_portarf_mayhem_${{ steps.version.outputs.version }}-no-world-map.zip
+          asset_content_type: application/zip
+      # HPro device assets
+      - name: Upload HPro Firmware TAR Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/oci-tar-hpro/portapack-mayhem_OCI.ppfw.tar
+          asset_name: OCI_hpro_mayhem_${{ steps.version.outputs.version }}.ppfw.tar
+          asset_content_type: application/x-tar
+      - name: Upload HPro Firmware Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/firmware-hpro/firmware.zip
+          asset_name: FIRMWARE_hpro_mayhem_${{ steps.version.outputs.version }}.zip
+          asset_content_type: application/zip
+      - name: Upload HPro SD Card Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-hpro/sdcard.zip
+          asset_name: COPY_TO_SDCARD_hpro_mayhem_${{ steps.version.outputs.version }}.zip
+          asset_content_type: application/zip
+      - name: Upload HPro SD Card Asset - No Map
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: artifacts/sdcard-no-map-hpro/sdcard-no-map.zip
+          asset_name: COPY_TO_SDCARD_hpro_mayhem_${{ steps.version.outputs.version }}-no-world-map.zip
           asset_content_type: application/zip
-     

.gitignore

@@ -83,3 +83,4 @@ venv/
 # generated bitmap arr file
 # TODO: generate bitmap during build, since we use python during build anyway, lemme know if this is a bad idea @zxkmm
 /firmware/tools/bitmap.hpp
+firmware/flashsize.h

CMakeLists.txt

@@ -27,6 +27,40 @@ set(CMAKE_COLOR_MAKEFILE ON)
 
 add_compile_options(-fdiagnostics-color=always)
 
+#Flash size related options
+#This is the size of the flash memory we SUPPORT. Don't worry, the internl flash app has harder limits based on device type.
+if(NOT DEFINED FLASH_MB_SIZE)
+    if(BOARD STREQUAL "PRALINE")
+        set(FLASH_MB_SIZE 4) # PRALINE has 4MB flash
+    else()
+        set(FLASH_MB_SIZE 2) # Default to 2MB if not provided. For PortaRf this should be 2MB passed to cmake with -DFLASH_MB_SIZE=2
+    endif()
+endif()
+message("Configuring for FLASH_MB_SIZE=${FLASH_MB_SIZE}MB")
+#This is the flash memory size we build. This can be less, so the FW size will be less, so can be flashed with older utils.
+if(NOT DEFINED FLASH_MB_LIMIT_SIZE)
+	if(BOARD STREQUAL "PRALINE")
+		set(FLASH_MB_LIMIT_SIZE 3.5) #PRALINE 4 MB = 3.5 firmware + 0.5 MB fpga bitstream.
+	else()
+	    set(FLASH_MB_LIMIT_SIZE 1) #TODO: should be ${FLASH_MB_SIZE} remove once we got a stable build for all devices we support with bigger than 1 mb flash
+	endif()
+endif()
+message("Configuring for FLASH_MB_LIMIT_SIZE=${FLASH_MB_LIMIT_SIZE}MB")
+
+if(FLASH_MB_SIZE LESS FLASH_MB_LIMIT_SIZE)
+    message(FATAL_ERROR "Error: The supported flash size is lower than the generated flash file. Build halted.")
+endif()
+
+math(EXPR FLASH_BYTES_SIZE "${FLASH_MB_SIZE} * 1024 * 1024")
+if(BOARD STREQUAL "PRALINE")
+	math(EXPR FLASH_BYTES_LIMIT_SIZE "3584 * 1024") #4 MB = 3.5 firmware + 0.5 MB fpga bitstream.
+else()
+    math(EXPR FLASH_BYTES_LIMIT_SIZE "${FLASH_MB_LIMIT_SIZE} * 1024 * 1024")
+endif()
+
+#generate h files
+configure_file(flashsize.h.in ${CMAKE_CURRENT_SOURCE_DIR}/firmware/flashsize.h)
+
 option(USE_CCACHE "Enable ccache, please keep an eye on this because sometimes it's not quite stable and generated unusable binary" OFF)
 
 project(portapack-h1)

docs/CNAME

@@ -1 +0,0 @@
-portapack.ried.cl

firmware/CMakeLists.txt

@@ -56,7 +56,7 @@ add_subdirectory(test)
 # NOTE: Dependencies break if the .bin files aren't included in DEPENDS. WTF, CMake?
 add_custom_command(
 	OUTPUT ${FIRMWARE_FILENAME}
-	COMMAND ${MAKE_SPI_IMAGE} ${application_BINARY_DIR}/application.bin ${baseband_BINARY_DIR}/baseband.img ${FIRMWARE_FILENAME}
+	COMMAND ${MAKE_SPI_IMAGE} ${application_BINARY_DIR}/application.bin ${baseband_BINARY_DIR}/baseband.img ${FIRMWARE_FILENAME} ${FLASH_BYTES_LIMIT_SIZE}
 	DEPENDS baseband application ${MAKE_SPI_IMAGE}
 		 ${baseband_BINARY_DIR}/baseband.img ${application_BINARY_DIR}/application.bin
 	VERBATIM
@@ -67,6 +67,24 @@ add_custom_target(
 	DEPENDS ${FIRMWARE_FILENAME} ${HACKRF_FIRMWARE_DFU_FILENAME} ${HACKRF_FIRMWARE_FILENAME}
 )
 
+# PRALINE: Append FPGA bitstream to firmware at offset 0x180000
+# The base firmware is 1MB, FPGA goes at 1MB offset, final size is 2MB
+if(BOARD STREQUAL "PRALINE")
+	math(EXPR PRALINE_FINAL_SIZE "4 * 1024 * 1024")
+	set(PRALINE_FPGA_BIN ${CMAKE_CURRENT_SOURCE_DIR}/../hackrf/firmware/fpga/build/praline_fpga.bin)
+	set(APPEND_FPGA_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/tools/append_fpga_bitstream.py)
+	add_custom_command(
+		TARGET firmware POST_BUILD
+		COMMAND ${CMAKE_COMMAND} -E echo "Appending PRALINE FPGA bitstream to firmware..."
+		COMMAND python3 ${APPEND_FPGA_SCRIPT} ${FIRMWARE_FILENAME} ${PRALINE_FPGA_BIN} ${FIRMWARE_FILENAME}.tmp ${PRALINE_FINAL_SIZE}
+		COMMAND ${CMAKE_COMMAND} -E rename ${FIRMWARE_FILENAME}.tmp ${FIRMWARE_FILENAME}
+		COMMAND ${CMAKE_COMMAND} -E echo "PRALINE firmware with FPGA bitstream created:"
+		COMMAND ls -la ${FIRMWARE_FILENAME}
+		COMMENT "Appending PRALINE FPGA bitstream"
+		VERBATIM
+	)
+endif()
+
 if(${GCC_VERSION_MISMATCH})
 	set(COMPILER_MISMATCH_MESSAGE "WARNING: Compiler version mismatch, please use the official compiler version ${EXPECTED_GCC_VERSION} when sharing builds! Current compiler version: ${CMAKE_CXX_COMPILER_VERSION}")
 	message(${COMPILER_MISMATCH_MESSAGE})

firmware/application/CMakeLists.txt

@@ -86,6 +86,9 @@ set(CPLD_20150901_DATA_CPP ${CMAKE_CURRENT_BINARY_DIR}/portapack_cpld_20150901_d
 set(CPLD_20170522_SVF_PATH ${HARDWARE_PATH}/portapack_h1/cpld/20170522/output_files/portapack_h1_cpld.svf)
 set(CPLD_20170522_DATA_CPP ${CMAKE_CURRENT_BINARY_DIR}/portapack_cpld_20170522_data.cpp)
 
+set(CPLD_H4M_SVF_PATH ${HARDWARE_PATH}/portapack_h4m/CPLD/AG256SL100/output_files/portapack_h4m_cpld.svf)
+set(CPLD_H4M_DATA_CPP ${CMAKE_CURRENT_BINARY_DIR}/portapack_cpld_h4m_data.cpp)
+
 set(HACKRF_CPLD_DATA_HPP ${CMAKE_CURRENT_BINARY_DIR}/hackrf_cpld_data.hpp)
 set(HACKRF_CPLD_DATA_CPP ${CMAKE_CURRENT_BINARY_DIR}/hackrf_cpld_data.cpp)
 
@@ -118,11 +121,16 @@ set(CSRC
 	usb_serial_endpoints.c
 	usb_serial_device_to_host.c
 	i2c_device_to_host.c
+	hackrf_core_mini.c
+	${HACKRF_PATH}/firmware/common/adc.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
+	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/scu.c
+	${HACKRF_PATH}/firmware/common/gpio_lpc.c
+	${HACKRF_PATH}/firmware/common/platform_detect.c
 	${CHIBIOS}/os/various/chprintf.c
 )
 
@@ -237,6 +245,7 @@ set(CPPSRC
 	hw/encoder.cpp
 	hw/max2837.cpp
 	hw/max2839.cpp
+	hw/max2831.cpp
 	hw/max5864.cpp
 	hw/rffc507x.cpp
 	hw/rffc507x_spi.cpp
@@ -296,10 +305,8 @@ set(CPPSRC
 	apps/ui_rds.cpp
 	apps/ui_recon_settings.cpp
 	apps/ui_recon.cpp
-	apps/ui_sd_over_usb.cpp
 	apps/ui_search.cpp
 	apps/ui_settings.cpp
-	apps/ui_siggen.cpp
 	apps/ui_sonde.cpp
 	apps/ui_ss_viewer.cpp
 	apps/ui_standalone_view.cpp
@@ -319,6 +326,7 @@ set(CPPSRC
 	config_mode.cpp
 	${CPLD_20150901_DATA_CPP}
 	${CPLD_20170522_DATA_CPP}
+	${CPLD_H4M_DATA_CPP}
 	${HACKRF_CPLD_DATA_CPP}
 	ui_external_items_menu_loader.cpp
 	view_factory_base.cpp
@@ -404,7 +412,11 @@ set(CPPWARN "-Wall -Wextra -Wno-psabi")
 # List all default C defines here, like -D_DEBUG=1
 # TODO: Switch -DCRT0_INIT_DATA depending on load from RAM or SPIFI?
 # NOTE: _RANDOM_TCC to kill a GCC 4.9.3 error with std::max argument types
-set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"' -DVERSION_MD5=${VERSION_MD5} -D'GCC_VERSION_MISMATCH=${GCC_VERSION_MISMATCH}'")
+# Use BOARD variable if set, otherwise default to HACKRF_ONE
+if(NOT DEFINED BOARD)
+    set(BOARD "HACKRF_ONE")
+endif()
+set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -D${BOARD} -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"' -DVERSION_MD5=${VERSION_MD5} -D'GCC_VERSION_MISMATCH=${GCC_VERSION_MISMATCH}'")
 
 # List all default ASM defines here, like -D_DEBUG=1
 set(DADEFS)
@@ -462,6 +474,12 @@ add_custom_command(
 	DEPENDS ${EXTRACT_CPLD_DATA} ${CPLD_20170522_SVF_PATH}
 )
 
+add_custom_command(
+	OUTPUT ${CPLD_H4M_DATA_CPP}
+	COMMAND ${EXTRACT_CPLD_DATA} ${CPLD_H4M_SVF_PATH} rev_h4m >${CPLD_H4M_DATA_CPP}
+	DEPENDS ${EXTRACT_CPLD_DATA} ${CPLD_H4M_SVF_PATH}
+)
+
 add_custom_command(
 	OUTPUT ${HACKRF_CPLD_DATA_CPP}
 	COMMAND ${HACKRF_CPLD_TOOL} --xsvf ${HACKRF_CPLD_XSVF_PATH} --portapack-data ${HACKRF_CPLD_DATA_CPP}
@@ -469,6 +487,9 @@ add_custom_command(
 )
 
 add_executable(${PROJECT_NAME}.elf ${CSRC} ${CPPSRC} ${ASMSRC})
+target_link_options(${PROJECT_NAME}.elf PRIVATE
+    "LINKER:--defsym,LD_FLASH_SIZE=${FLASH_BYTES_LIMIT_SIZE}"
+)
 set_target_properties(${PROJECT_NAME}.elf PROPERTIES LINK_DEPENDS ${LDSCRIPT})
 add_definitions(${DEFS})
 include_directories(. ${INCDIR})

firmware/application/app_settings.cpp

@@ -68,6 +68,9 @@ void BoundSetting::parse(std::string_view value) {
             as<bool>() = (parsed != 0);
             break;
         }
+        case SettingType::Float:
+            as<float>() = atof(value.data());
+            break;
     };
 }
 
@@ -101,6 +104,11 @@ void BoundSetting::write(File& file) const {
         case SettingType::Bool:
             file.write(as<bool>() ? "1" : "0", 1);
             break;
+
+        case SettingType::Float: {
+            auto float_str = to_string_decimal(as<float>(), 6);
+            file.write(float_str.c_str(), float_str.length());
+        }
     }
 
     file.write("\r\n", 2);

firmware/application/app_settings.hpp

@@ -52,6 +52,7 @@ class BoundSetting {
         U8,
         String,
         Bool,
+        Float
     };
 
    public:
@@ -73,6 +74,9 @@ class BoundSetting {
     BoundSetting(std::string_view name, bool* target)
         : name_{name}, target_{target}, type_{SettingType::Bool} {}
 
+    BoundSetting(std::string_view name, float* target)
+        : name_{name}, target_{target}, type_{SettingType::Float} {}
+
     std::string_view name() const { return name_; }
     void parse(std::string_view value);
     void write(File& file) const;

firmware/application/apps/ui_aprs_tx.cpp

@@ -29,6 +29,7 @@
 #include "baseband_api.hpp"
 #include "portapack_shared_memory.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "ui_geomap.hpp"
 
 #include <cstring>
 #include <stdio.h>
@@ -49,10 +50,24 @@ APRSTXView::~APRSTXView() {
 
 void APRSTXView::start_tx() {
     // TODO: Clean up this API to take string_views to avoid allocations.
+    std::string new_payload = payload;
+
+    std::string gps = text_gps_coord.get();
+    std::string token = "?GPS?";
+    size_t pos = 0;
+    while ((pos = new_payload.find(token, pos)) != std::string::npos) {
+        new_payload.replace(pos, token.size(), gps);
+        pos += gps.size();
+    }
+
+    text_payload.set(new_payload);
+
+    std::string path = text_path.get();
+
     make_aprs_frame(
         sym_source.to_string().c_str(), num_ssid_source.value(),
         sym_dest.to_string().c_str(), num_ssid_dest.value(),
-        payload);
+        new_payload, path);
 
     // uint8_t * bb_data_ptr = shared_memory.bb_data.data;
     // text_payload.set(to_string_hex_array(bb_data_ptr + 56, 15));
@@ -77,6 +92,61 @@ void APRSTXView::on_tx_progress(const uint32_t progress, const bool done) {
     }
 }
 
+void APRSTXView::process_coordinates(float lat_, float lon_) {
+    std::string s;
+
+    char ns = lat_ >= 0 ? 'N' : 'S';
+    float lat = (lat_ >= 0) ? lat_ : -lat_;
+    uint32_t lat_d = (uint32_t)lat;
+    uint32_t lat_m = (uint32_t)((lat - lat_d) * 6000.0f + 0.5f);
+
+    if (lat_m >= 6000) {
+        lat_m = 0;
+        lat_d++;
+    }
+
+    s += to_string_dec_uint(lat_d, 2, '0');
+    s += to_string_dec_uint(lat_m / 100, 2, '0');
+    s += ".";
+    s += to_string_dec_uint(lat_m % 100, 2, '0');
+    s += ns;
+
+    s += "/";
+
+    char ew = lon_ >= 0 ? 'E' : 'W';
+    float lon = (lon_ >= 0) ? lon_ : -lon_;
+    uint32_t lon_d = (uint32_t)lon;
+    uint32_t lon_m = (uint32_t)((lon - lon_d) * 6000.0f + 0.5f);
+
+    if (lon_m >= 6000) {
+        lon_m = 0;
+        lon_d++;
+    }
+
+    s += to_string_dec_uint(lon_d, 3, '0');
+    s += to_string_dec_uint(lon_m / 100, 2, '0');
+    s += ".";
+    s += to_string_dec_uint(lon_m % 100, 2, '0');
+    s += ew;
+    text_gps_coord.set(s);
+}
+
+void APRSTXView::on_gps(const GPSPosDataMessage* message) {
+    if (manual_gps_mode) {
+        return;  // no more update once set manually
+    }
+    if (message->lat < -90.0 || message->lat > 90.0 ||
+        message->lon < -180.0 || message->lon > 180.0) {
+        return;
+    }
+    if (message->lat == 0.0f && message->lon == 0.0f) {
+        return;
+    }
+    last_lat = message->lat;
+    last_lon = message->lon;
+    process_coordinates(message->lat, message->lon);
+}
+
 APRSTXView::APRSTXView(NavigationView& nav) {
     baseband::run_image(portapack::spi_flash::image_tag_afsk);
 
@@ -87,8 +157,33 @@ APRSTXView::APRSTXView(NavigationView& nav) {
                   &num_ssid_dest,
                   &text_payload,
                   &button_set,
+                  &text_gps_coord,
+                  &button_mangps,
+                  &gps_is_manual,
+                  &text_path,
+                  &button_setpath,
                   &tx_view});
 
+    sym_source.set_value(symsrc);
+    num_ssid_source.set_value(ssidsrc);
+    sym_dest.set_value(symdst);
+    num_ssid_dest.set_value(ssiddst);
+    text_payload.set(payload);
+    text_path.set(path_cache);
+
+    sym_source.on_change = [this](SymField&) {
+        symsrc = sym_source.to_string();
+    };
+    num_ssid_source.on_change = [this](int32_t v) {
+        ssidsrc = v;
+    };
+    sym_dest.on_change = [this](SymField&) {
+        symdst = sym_dest.to_string();
+    };
+    num_ssid_dest.on_change = [this](int32_t v) {
+        ssiddst = v;
+    };
+
     button_set.on_select = [this, &nav](Button&) {
         text_prompt(
             nav,
@@ -99,6 +194,17 @@ APRSTXView::APRSTXView(NavigationView& nav) {
                 text_payload.set(s);
             });
     };
+    button_setpath.on_select = [this, &nav](Button&) {
+        text_prompt(
+            nav,
+            path_cache,
+            60,
+            ENTER_KEYBOARD_MODE_ALPHA,
+            [this](std::string& s) {
+                text_path.set(s);
+                path_cache = s;
+            });
+    };
 
     tx_view.on_edit_frequency = [this, &nav]() {
         auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
@@ -116,6 +222,23 @@ APRSTXView::APRSTXView(NavigationView& nav) {
         tx_view.set_transmitting(false);
         transmitter_model.disable();
     };
+
+    button_mangps.on_select = [this, &nav](Button&) {
+        nav.push<GeoMapView>(
+            0,
+            GeoPos::alt_unit::METERS,
+            GeoPos::spd_unit::HIDDEN,
+            last_lat,
+            last_lon,
+            [this](int32_t, float lat, float lon, int32_t) {
+                last_lat = lat;
+                last_lon = lon;
+                manual_gps_mode = true;
+                gps_is_manual.set("MANUAL");
+                process_coordinates(lat, lon);
+            });
+    };
+    // process_coordinates(last_lat, last_lon); //don't load last, so won't confuse users
 }
 
 } /* namespace ui */

firmware/application/apps/ui_aprs_tx.hpp

@@ -50,59 +50,109 @@ class APRSTXView : public View {
         1750000 /* bandwidth */,
         AFSK_TX_SAMPLERATE /* sampling rate */
     };
-    app_settings::SettingsManager settings_{
-        "tx_aprs", app_settings::Mode::TX};
 
+    std::string symsrc = "";
+    std::string symdst = "";
     std::string payload{""};
+    std::string path_cache = "";
+    int32_t ssidsrc = 0;
+    int32_t ssiddst = 0;
+
+    bool manual_gps_mode = false;
+    float last_lat = 0.0f;
+    float last_lon = 0.0f;
+
+    app_settings::SettingsManager settings_{
+        "tx_aprs",
+        app_settings::Mode::TX,
+        {{"symsrc"sv, &symsrc},
+         {"symdst"sv, &symdst},
+         {"ssidsrc"sv, &ssidsrc},
+         {"ssiddst"sv, &ssiddst},
+         {"payload"sv, &payload},
+         {"last_lat"sv, &last_lat},
+         {"last_lon"sv, &last_lon},
+         {"path"sv, &path_cache}}};
 
     void start_tx();
     void generate_frame();
     void generate_frame_pos();
     void on_tx_progress(const uint32_t progress, const bool done);
+    void on_gps(const GPSPosDataMessage* message);
+    void process_coordinates(float lat, float lon);
 
     Labels labels{
-        {{UI_POS_X(0), 1 * 16}, "Source:       SSID:", Theme::getInstance()->fg_light->foreground},  // 6 alphanum + SSID
-        {{UI_POS_X(0), 2 * 16}, " Dest.:       SSID:", Theme::getInstance()->fg_light->foreground},
-        {{UI_POS_X(0), 4 * 16}, "Info field:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(0)}, "Source:       SSID:", Theme::getInstance()->fg_light->foreground},  // 6 alphanum + SSID
+        {{UI_POS_X(0), UI_POS_Y(1)}, " Dest.:       SSID:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(2)}, "Path: (ex.: WIDE1-1,WIDE2-1)", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(6)}, "Info field:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(10)}, "GPS:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X_CENTER(22), UI_POS_Y(14)}, "Use ?GPS? in the info", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X_CENTER(17), UI_POS_Y(15)}, "as a placeholder.", Theme::getInstance()->fg_light->foreground},
+    };
+
+    Text text_path{
+        {UI_POS_X(0), UI_POS_Y(3), UI_POS_MAXWIDTH, UI_POS_HEIGHT(1)},
+        "WIDE1-1",
+    };
+    Text gps_is_manual{
+        {UI_POS_X(6), UI_POS_Y(10), UI_POS_WIDTH(10), UI_POS_HEIGHT(1)},
+        "",
     };
 
     SymField sym_source{
-        {7 * 8, 1 * 16},
+        {UI_POS_X(7), UI_POS_Y(0)},
         6,
         SymField::Type::Alpha};
 
     NumberField num_ssid_source{
-        {19 * 8, 1 * 16},
+        {UI_POS_X(19), UI_POS_Y(0)},
         2,
         {0, 15},
         1,
         ' '};
 
     SymField sym_dest{
-        {7 * 8, 2 * 16},
+        {UI_POS_X(7), UI_POS_Y(1)},
         6,
         SymField::Type::Alpha};
 
     NumberField num_ssid_dest{
-        {19 * 8, 2 * 16},
+        {UI_POS_X(19), UI_POS_Y(1)},
         2,
         {0, 15},
         1,
         ' '};
 
     Text text_payload{
-        {UI_POS_X(0), 5 * 16, screen_width, 16},
-        "-"};
+        {UI_POS_X(0), UI_POS_Y(7), UI_POS_MAXWIDTH, UI_POS_HEIGHT(1)},
+        ""};
     Button button_set{
-        {UI_POS_X(0), 6 * 16, 80, 32},
+        {UI_POS_X(0), UI_POS_Y(8), UI_POS_WIDTH(10), UI_POS_HEIGHT(2)},
         "Set"};
 
+    Text text_gps_coord{
+        {UI_POS_X(0), UI_POS_Y(11), UI_POS_WIDTH(20), UI_POS_HEIGHT(1)},
+        "-"};
+
+    Button button_mangps{
+        {UI_POS_X(0), UI_POS_Y(12), UI_POS_WIDTH(14), UI_POS_HEIGHT(2)},
+        "Manual GPS"};
+    Button button_setpath{
+        {UI_POS_X(0), UI_POS_Y(4), UI_POS_WIDTH(14), UI_POS_HEIGHT(2)},
+        "Set Path"};
     TransmitterView tx_view{
         (int16_t)UI_POS_Y_BOTTOM(4),
         5000,
         0  // disable setting bandwith, since APRS used fixed 10k bandwidth
     };
 
+    MessageHandlerRegistration message_handler_gps{
+        Message::ID::GPSPosData,
+        [this](Message* const p) {
+            const auto message = static_cast<const GPSPosDataMessage*>(p);
+            this->on_gps(message);
+        }};
     MessageHandlerRegistration message_handler_tx_progress{
         Message::ID::TXProgress,
         [this](const Message* const p) {

firmware/application/apps/ui_battinfo.hpp

@@ -98,7 +98,7 @@ class BattinfoView : public View {
         "Volt"};
 
     Button button_exit{
-        {UI_POS_X_CENTER(12), 17 * 16, UI_POS_WIDTH(12), UI_POS_HEIGHT(3)},
+        {UI_POS_X_CENTER(12), UI_POS_Y_BOTTOM(4), UI_POS_WIDTH(12), UI_POS_HEIGHT(2)},
         "Back"};
     static msg_t static_fn(void* arg);
     Thread* thread{nullptr};

firmware/application/apps/ui_debug.hpp

@@ -93,6 +93,10 @@ typedef enum {
     CT_SI5351,
     CT_AUDIO,
     CT_MAX17055,
+#ifdef PRALINE
+    CT_FPGA,
+#endif
+    CT_SGPIO,
 } chip_type_t;
 
 struct RegistersWidgetConfig {
@@ -373,6 +377,459 @@ private:
         };
 };*/
 
+/* Radio Signal Path Diagnostics View
+ * Shows status of each component in the RX/TX signal chain:
+ * Antenna -> RF Path -> RFFC5072 -> MAX283x -> MAX5864 -> FPGA -> SGPIO -> MCU
+ */
+class RadioDiagnosticsView : public View {
+   public:
+    RadioDiagnosticsView(NavigationView& nav);
+
+    void focus() override;
+    std::string title() const override { return "Radio Diag"; };
+
+   private:
+    NavigationView& nav_;
+
+    void update_status();
+
+    Text text_title{{0, 0, 240, 16}, "=== Signal Path Status ==="};
+
+    Text text_lbl_rffc{{0, 20, 140, 16}, "RFFC5072 (1st IF):"};
+    Text text_rffc_status{{144, 20, 96, 16}, "---"};
+
+    Text text_lbl_max{{0, 36, 140, 16}, "MAX283x (2nd IF):"};
+    Text text_max_status{{144, 36, 96, 16}, "---"};
+
+    Text text_lbl_adc{{0, 52, 140, 16}, "MAX5864 (ADC):"};
+    Text text_adc_status{{144, 52, 96, 16}, "---"};
+
+    Text text_lbl_fpga{{0, 68, 140, 16}, "FPGA/CPLD:"};
+    Text text_fpga_status{{144, 68, 96, 16}, "---"};
+
+    Text text_lbl_sgpio{{0, 84, 140, 16}, "SGPIO:"};
+    Text text_sgpio_status{{144, 84, 96, 16}, "---"};
+
+    Text text_lbl_clock{{0, 100, 140, 16}, "Si5351 Clocks:"};
+    Text text_clock_status{{144, 100, 96, 16}, "---"};
+
+    Text text_regs_title{{0, 124, 240, 16}, "=== Key Registers ==="};
+
+    Text text_lbl_rffc_reg{{0, 144, 80, 16}, "RFFC R0:"};
+    Text text_rffc_reg{{80, 144, 160, 16}, "---"};
+
+    Text text_lbl_max_reg{{0, 160, 80, 16}, "MAX R0:"};
+    Text text_max_reg{{80, 160, 160, 16}, "---"};
+
+    Text text_lbl_fpga_reg{{0, 176, 80, 16}, "FPGA:"};
+    Text text_fpga_reg{{80, 176, 160, 16}, "---"};
+
+    Text text_lbl_sgpio_reg{{0, 192, 80, 16}, "SGPIO:"};
+    Text text_sgpio_reg{{80, 192, 160, 16}, "---"};
+
+    Text text_test_result{{0, 220, 240, 32}, ""};
+
+    Button button_refresh{
+        {8, 280, 72, 24},
+        "Refresh"};
+
+    Button button_done{
+        {168, 280, 64, 24},
+        "Done"};
+};
+
+/* BasebandStatusView ***************************************************/
+
+class BasebandStatusView : public View {
+   public:
+    BasebandStatusView(NavigationView& nav);
+
+    void focus() override;
+    std::string title() const override { return "Baseband Status"; };
+
+   private:
+    NavigationView& nav_;
+
+    void update();
+
+    Text text_title{{0, 0, 240, 16}, "=== Baseband Counters ==="};
+
+    Text text_lbl_marker{{0, 20, 140, 16}, "Streaming Marker:"};
+    Text text_marker{{144, 20, 96, 16}, "---"};
+
+    Text text_lbl_loops{{0, 36, 140, 16}, "Baseband Loops:"};
+    Text text_loops{{144, 36, 96, 16}, "---"};
+
+    Text text_lbl_wait{{0, 52, 140, 16}, "DMA Wait Count:"};
+    Text text_wait{{144, 52, 96, 16}, "---"};
+
+    Text text_lbl_xfr{{0, 68, 140, 16}, "DMA Xfr Count:"};
+    Text text_xfr{{144, 68, 96, 16}, "---"};
+
+    Text text_lbl_missed{{0, 84, 140, 16}, "Buffer Missed:"};
+    Text text_missed{{144, 84, 96, 16}, "---"};
+
+    Text text_status_line1{{0, 110, 240, 16}, ""};
+    Text text_status_line2{{0, 126, 240, 16}, ""};
+    Text text_status_line3{{0, 142, 240, 16}, ""};
+
+    Button button_refresh{
+        {8, 280, 72, 24},
+        "Refresh"};
+
+    Button button_done{
+        {168, 280, 64, 24},
+        "Done"};
+
+    MessageHandlerRegistration message_handler_frame_sync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) { this->update(); }};
+};
+
+/* SGPIOLiveMonitorView ***************************************************/
+
+class SGPIOLiveMonitorView : public View {
+   public:
+    SGPIOLiveMonitorView(NavigationView& nav);
+
+    void focus() override;
+    std::string title() const override { return "SGPIO Live"; };
+
+   private:
+    NavigationView& nav_;
+
+    void update();
+
+    Text text_title{{0, 0, 240, 16}, "=== SGPIO Registers ==="};
+
+    Text text_lbl_ctrl{{0, 20, 140, 16}, "CTRL_ENABLE:"};
+    Text text_ctrl{{144, 20, 96, 16}, "---"};
+
+    Text text_lbl_in{{0, 36, 140, 16}, "GPIO_INREG:"};
+    Text text_in{{144, 36, 96, 16}, "---"};
+
+    Text text_lbl_ss{{0, 52, 140, 16}, "REG_SS[0]:"};
+    Text text_ss{{144, 52, 96, 16}, "---"};
+
+    Text text_lbl_status{{0, 68, 140, 16}, "STATUS_1:"};
+    Text text_status{{144, 68, 96, 16}, "---"};
+
+    Text text_lbl_out{{0, 84, 140, 16}, "GPIO_OUTREG:"};
+    Text text_out{{144, 84, 96, 16}, "---"};
+
+    Text text_lbl_oen{{0, 100, 140, 16}, "GPIO_OENREG:"};
+    Text text_oen{{144, 100, 96, 16}, "---"};
+
+    Text text_diag_line1{{0, 126, 240, 16}, ""};
+    Text text_diag_line2{{0, 142, 240, 16}, ""};
+    Text text_diag_line3{{0, 158, 240, 16}, ""};
+    Text text_diag_line4{{0, 174, 240, 16}, ""};
+
+    Button button_refresh{
+        {8, 280, 72, 24},
+        "Refresh"};
+
+    Button button_done{
+        {168, 280, 64, 24},
+        "Done"};
+
+    MessageHandlerRegistration message_handler_frame_sync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) { this->update(); }};
+};
+
+/* Radio RX Step-by-Step Test View
+ * Tests radio hardware directly without M0 baseband involvement.
+ * Logs each step to help isolate where the signal chain breaks.
+ */
+class RadioRxTestView : public View {
+   public:
+    RadioRxTestView(NavigationView& nav);
+
+    void focus() override;
+    std::string title() const override { return "RX Test"; };
+
+   private:
+    NavigationView& nav_;
+    bool radio_initialized_{false};
+    uint32_t test_frequency_{433000000};  // 433 MHz default
+
+    void log(const std::string& msg);
+    void log_registers(const std::string& label);
+    void run_init_test();
+    void run_rx_mode_test();
+    void run_freq_test();
+    void run_sgpio_test();
+    void run_full_test();
+    void run_step_test();
+    bool check_gpio_changing();
+
+    Labels labels{
+        {{0, 0}, "=== Radio RX Test ===", Theme::getInstance()->fg_yellow->foreground}};
+
+    Console console{
+        {0, 20, 240, 200}};
+
+    Button button_init{
+        {0, 224, 56, 24},
+        "Init"};
+
+    Button button_rx{
+        {60, 224, 56, 24},
+        "RX"};
+
+    Button button_freq{
+        {120, 224, 56, 24},
+        "Freq"};
+
+    Button button_sgpio{
+        {180, 224, 56, 24},
+        "SGPIO"};
+
+    Button button_full{
+        {0, 252, 56, 24},
+        "Full"};
+
+    Button button_step{
+        {60, 252, 56, 24},
+        "Step"};
+
+    Button button_done{
+        {120, 252, 112, 24},
+        "Done"};
+};
+
+/* SGPIO8 Clock Detector View
+ * Samples SGPIO8 pin to verify external clock is present.
+ * Shows toggle count and estimated frequency.
+ */
+class SGPIO8ClockDetectorView : public View {
+   public:
+    SGPIO8ClockDetectorView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "SGPIO8 Clock"; };
+
+   private:
+    NavigationView& nav_;
+
+    Text text_title{{8, 16, 224, 16}, "SGPIO8 Clock Detector"};
+    Text text_lbl_samples{{8, 48, 160, 16}, "Samples (first 20):"};
+    Text text_samples{{8, 64, 224, 16}, "                    "};
+    Text text_lbl_toggles{{8, 96, 160, 16}, "Toggle count:"};
+    Text text_toggles{{8, 112, 224, 16}, "                         "};
+    Text text_status{{8, 144, 224, 32}, "                              "};
+
+    Button button_sample{{8, 200, 96, 24}, "Sample"};
+    Button button_done{{128, 200, 96, 24}, "Done"};
+
+    void sample_sgpio8();
+};
+
+/* Slice Status View
+ * Shows SGPIO slice status: which slices are enabled vs active,
+ * counter values, and data capture status.
+ */
+
+/* Si5351 Debug View
+ * Dedicated diagnostic tool for Si5351 clock generator.
+ * Shows PLL lock status, clock configurations, and allows testing.
+ */
+class Si5351DebugView : public View {
+   public:
+    Si5351DebugView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "Si5351 Clocks"; };
+
+   private:
+    NavigationView& nav_;
+
+    Text text_title{{8, 16, 200, 16}, "Si5351 Clock Generator"};
+
+    Text text_status_label{{8, 40, 80, 16}, "Status Reg:"};
+    Text text_status_value{{96, 40, 144, 16}, ""};
+
+    Text text_pll_a_label{{8, 60, 80, 16}, "PLL A:"};
+    Text text_pll_a_status{{96, 60, 144, 16}, ""};
+
+    Text text_pll_b_label{{8, 80, 80, 16}, "PLL B:"};
+    Text text_pll_b_status{{96, 80, 144, 16}, ""};
+
+    Text text_sys_init_label{{8, 100, 80, 16}, "SYS_INIT:"};
+    Text text_sys_init_status{{96, 100, 144, 16}, ""};
+
+    Text text_xtal_cap_label{{8, 120, 80, 16}, "XTAL Cap:"};
+    Text text_xtal_cap_value{{96, 120, 144, 16}, ""};
+
+    Text text_clk0_label{{8, 150, 72, 16}, "CLK0:"};
+    Text text_clk0_status{{88, 150, 152, 16}, ""};
+
+    Text text_clk0_freq_label{{8, 170, 72, 16}, "  Freq:"};
+    Text text_clk0_freq_value{{88, 170, 152, 16}, ""};
+
+    Text text_clk0_div_label{{8, 190, 72, 16}, "  Div:"};
+    Text text_clk0_div_value{{88, 190, 152, 16}, ""};
+
+    Text text_clk1_label{{8, 210, 96, 16}, "CLK1 (SCT):"};
+    Text text_clk1_status{{112, 210, 128, 16}, ""};
+
+    Button button_refresh{{8, 240, 72, 24}, "Refresh"};
+    Button button_reset_pll{{88, 240, 72, 24}, "Reset PLL"};
+    Button button_done{{168, 240, 64, 24}, "Done"};
+
+    void refresh_status();
+    void reset_pll();
+};
+
+#ifdef PRALINE
+/* SignalPathStatusView *************************************************/
+class SignalPathStatusView : public View {
+   public:
+    SignalPathStatusView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "Signal Path"; };
+
+   private:
+    NavigationView& nav_;
+    void refresh_status();
+
+    Text text_title{{0, 0, 240, 16}, "=== Signal Path Status ==="};
+
+    Text text_lbl_max_enable{{0, 20, 1114, 16}, "MAX2831:"};
+    Text text_max_enable{{116, 20, 124, 16}, "---"};
+
+    Text text_lbl_max_mode{{0, 36, 114, 16}, "RX Mode:"};
+    Text text_max_mode{{116, 36, 124, 16}, "---"};
+
+    Text text_lbl_rf_path{{0, 52, 114, 16}, "RF Path:"};
+    Text text_rf_path{{116, 52, 124, 16}, "---"};
+
+    Text text_lbl_rf_amp{{0, 68, 114, 16}, "RF Amp:"};
+    Text text_rf_amp{{116, 68, 124, 16}, "---"};
+
+    Text text_lbl_lna{{0, 84, 114, 16}, "LNA Gain:"};
+    Text text_lna{{116, 84, 124, 16}, "---"};
+
+    Text text_lbl_vga{{0, 100, 114, 16}, "VGA Gain:"};
+    Text text_vga{{116, 100, 124, 16}, "---"};
+
+    Text text_lbl_fpga_decim{{0, 116, 114, 16}, "FPGA Decim:"};
+    Text text_fpga_decim{{116, 116, 124, 16}, "---"};
+
+    Text text_status{{0, 140, 240, 32}, ""};
+
+    Button button_refresh{{8, 280, 72, 24}, "Refresh"};
+    Button button_done{{168, 280, 64, 24}, "Done"};
+};
+#endif
+
+#ifdef PRALINE
+/* RFFC5072StatusView *************************************************/
+class RFFC5072StatusView : public View {
+   public:
+    RFFC5072StatusView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "RFFC5072 Status"; };
+
+   private:
+    NavigationView& nav_;
+    void refresh_status();
+
+    Text text_title{{0, 0, 240, 16}, "=== RFFC5072 (1st IF) ==="};
+
+    Text text_lbl_enabled{{0, 20, 114, 16}, "Status:"};
+    Text text_enabled{{116, 20, 124, 16}, "---"};
+
+    Text text_lbl_freq{{0, 36, 114, 16}, "LO Freq:"};
+    Text text_freq{{116, 36, 124, 16}, "---"};
+
+    Text text_lbl_path{{0, 52, 114, 16}, "Path:"};
+    Text text_path{{116, 52, 124, 16}, "---"};
+
+    Text text_lbl_mixer{{0, 68, 114, 16}, "Mixer:"};
+    Text text_mixer{{116, 68, 124, 16}, "---"};
+
+    Text text_lbl_r0{{0, 92, 114, 16}, "Reg 0:"};
+    Text text_r0{{116, 92, 124, 16}, "---"};
+
+    Text text_lbl_r1{{0, 108, 114, 16}, "Reg 1 (N):"};
+    Text text_r1{{116, 108, 124, 16}, "---"};
+
+    Text text_lbl_r2{{0, 124, 114, 16}, "Reg 2:"};
+    Text text_r2{{116, 124, 124, 16}, "---"};
+
+    Text text_lbl_decode{{0, 148, 240, 16}, "--- Decoded Values ---"};
+
+    Text text_lbl_n{{0, 168, 114, 16}, "N divider:"};
+    Text text_n{{116, 168, 124, 16}, "---"};
+
+    Text text_lbl_lodiv{{0, 184, 114, 16}, "LO divider:"};
+    Text text_lodiv{{116, 184, 124, 16}, "---"};
+
+    Text text_lbl_calc{{0, 200, 114, 16}, "Calc freq:"};
+    Text text_calc{{116, 200, 124, 16}, "---"};
+
+    Text text_status{{0, 224, 240, 32}, ""};
+
+    Button button_refresh{{8, 280, 72, 24}, "Refresh"};
+    Button button_done{{168, 280, 64, 24}, "Done"};
+};
+
+#ifdef PRALINE
+/* RFFCTuningDebugView *************************************************/
+class RFFCTuningDebugView : public View {
+   public:
+    RFFCTuningDebugView(NavigationView& nav);
+    void focus() override;
+    std::string title() const override { return "RFFC Tuning Debug"; };
+
+   private:
+    void refresh();
+
+    Text text_title{{0, 0, 240, 16}, "RFFC5072 Tuning Debug"};
+
+    Text text_lbl_called{{0, 18, 120, 16}, "Freq Set:"};
+    Text text_called{{122, 18, 118, 16}, "NO"};
+
+    Text text_lbl_req{{0, 38, 120, 16}, "Requested:"};
+    Text text_req{{122, 38, 118, 16}, "---"};
+
+    Text text_lbl_exp_n{{0, 56, 120, 16}, "Expected N:"};
+    Text text_exp_n{{122, 56, 118, 16}, "---"};
+
+    Text text_lbl_act_n{{0, 74, 120, 16}, "Actual N:"};
+    Text text_act_n{{122, 74, 118, 16}, "---"};
+
+    Text text_lbl_exp_div{{0, 92, 120, 16}, "Exp LO/Pres:"};
+    Text text_exp_div{{122, 92, 118, 16}, "---"};
+
+    Text text_lbl_act_div{{0, 110, 120, 16}, "Act LO/Pres:"};
+    Text text_act_div{{122, 110, 118, 16}, "---"};
+
+    Text text_lbl_calc{{0, 128, 120, 16}, "Calc LO freq:"};
+    Text text_calc{{122, 128, 118, 16}, "---"};
+
+    Text text_lbl_calc_lo{{0, 146, 120, 16}, "Calc input:"};
+    Text text_calc_lo{{122, 146, 118, 16}, "---"};
+
+    Text text_lbl_calc_vco{{0, 164, 120, 16}, "In Calc VCO:"};
+    Text text_calc_vco{{122, 164, 118, 16}, "---"};
+
+    Text text_lbl_vco{{0, 182, 120, 16}, "Calc VCO:"};
+    Text text_vco{{122, 182, 118, 16}, "---"};
+
+    Text text_lbl_n_q24{{0, 200, 120, 16}, "N (Q24):"};
+    Text text_n_q24{{122, 200, 118, 16}, "---"};
+
+    Text text_status{{0, 224, 240, 48}, ""};
+
+    Button button_refresh{{8, 280, 72, 24}, "Refresh"};
+    Button button_done{{168, 280, 64, 24}, "Done"};
+};
+
+#endif
+
+#endif
+
 class DebugPeripheralsMenuView : public BtnGridView {
    public:
     DebugPeripheralsMenuView(NavigationView& nav);

firmware/application/apps/ui_flash_utility.cpp

@@ -45,10 +45,15 @@ bool valid_firmware_file(std::filesystem::path::string_type path) {
     // test read of the whole file just to validate checksum (baseband flash code will re-read when flashing)
     auto result = firmware_file.open(path.c_str());
     if (!result.is_valid()) {
+        uint64_t file_size = firmware_file.size();
+        if (portapack::device_type == portapack::DeviceType::DEV_PORTAPACK && file_size > 1 * 1024 * 1024) {
+            // Portapack firmware files must not be larger than 1MB
+            return false;
+        }
+        // May need to add a check to portarf and portarf pro too.
         checksum = 0;
-        for (uint32_t offset = 0; offset < FLASH_ROM_SIZE; offset += sizeof(read_buffer)) {
+        for (uint64_t offset = 0; offset < FLASH_ROM_SIZE && offset < file_size; offset += sizeof(read_buffer)) {
             auto readResult = firmware_file.read(&read_buffer, sizeof(read_buffer));
-
             if ((!readResult) || (readResult.value() != sizeof(read_buffer))) {
                 // File was smaller than 1MB:
                 // If version is such that the file SHOULD have been 1MB, call it a checksum error (otherwise say it's OK).

firmware/application/apps/ui_flash_utility.hpp

@@ -32,7 +32,9 @@
 #include "untar.hpp"
 #include <cstdint>
 
-#define FLASH_ROM_SIZE 1048576
+#include "../../flashsize.h"
+
+#define FLASH_ROM_SIZE (FLASH_SIZE_MB * 1024 * 1024)
 #define FLASH_STARTING_ADDRESS 0x00000000
 #define FLASH_EXPECTED_CHECKSUM 0x00000000
 #define FLASH_CHECKSUM_ERROR 0xFFFFFFFF

firmware/application/apps/ui_looking_glass_app.cpp

@@ -69,7 +69,7 @@ void GlassView::manage_beep_audio() {
     }
 }
 
-void GlassView::get_max_power(const ChannelSpectrum& spectrum, uint8_t bin, uint8_t& max_power) {
+void GlassView::get_max_power(const ChannelSpectrum& spectrum, uint16_t bin, uint8_t& max_power) {
     if (mode == LOOKING_GLASS_SINGLEPASS) {
         // <20MHz spectrum mode
         if (bin < 120) {
@@ -91,7 +91,7 @@ void GlassView::get_max_power(const ChannelSpectrum& spectrum, uint8_t bin, uint
     }
 }
 
-rf::Frequency GlassView::get_freq_from_bin_pos(uint8_t pos) {
+rf::Frequency GlassView::get_freq_from_bin_pos(uint16_t pos) {
     rf::Frequency freq_at_pos = 0;
     if (mode == LOOKING_GLASS_SINGLEPASS) {
         // 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_width(240)/2 => 120
@@ -101,7 +101,14 @@ rf::Frequency GlassView::get_freq_from_bin_pos(uint8_t pos) {
     return freq_at_pos;
 }
 
-void GlassView::on_marker_change() {
+void GlassView::on_marker_change(int8_t delta) {
+    if ((marker_pixel_index + delta) < 0)
+        marker_pixel_index = marker_pixel_index + delta + screen_width;
+    else if ((marker_pixel_index + delta) > screen_width)
+        marker_pixel_index = marker_pixel_index + delta - screen_width;
+    else
+        marker_pixel_index = marker_pixel_index + delta;
+
     marker = get_freq_from_bin_pos(marker_pixel_index);
     field_marker.set_text(to_string_short_freq(marker));
     plot_marker(marker_pixel_index);  // Refresh marker on screen
@@ -200,7 +207,7 @@ 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_width (240) of those bins
-    for (uint8_t bin = 0; bin < bin_length; bin++) {
+    for (uint16_t bin = 0; bin < bin_length; bin++) {
         get_max_power(spectrum, bin, max_power);
         if (max_power > range_max_power)
             range_max_power = max_power;
@@ -208,7 +215,7 @@ void GlassView::on_channel_spectrum(const ChannelSpectrum& spectrum) {
         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++) {
+            for (uint16_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
@@ -285,7 +292,7 @@ void GlassView::on_range_changed() {
     max_power = 0;
     bins_hz_size = 0;
 
-    on_marker_change();
+    on_marker_change(0);
     update_range_field();
 
     // set the sample rate and bandwidth
@@ -298,8 +305,8 @@ void GlassView::on_range_changed() {
     receiver_model.set_target_frequency(f_center);  // tune rx for this slice
 }
 
-void GlassView::plot_marker(uint8_t pos) {
-    uint8_t shift_y = 0;
+void GlassView::plot_marker(uint16_t pos) {
+    uint16_t shift_y = 0;
     if (live_frequency_view > 0)  // plot one line down when in live view
     {
         shift_y = 16;
@@ -381,9 +388,10 @@ GlassView::GlassView(
                   &button_beep_squelch,
                   &field_marker,
                   &field_trigger,
+                  &button_marker_minus,
+                  &button_marker_plus,
                   &button_jump,
                   &button_rst,
-                  &field_rx_iq_phase_cal,
                   &freq_stats});
 
     load_presets();  // Load available presets from TXT files (or default).
@@ -491,13 +499,7 @@ GlassView::GlassView(
     range_presets.set_selected_index(preset_index);
 
     field_marker.on_encoder_change = [this](TextField&, EncoderEvent delta) {
-        if ((marker_pixel_index + delta) < 0)
-            marker_pixel_index = marker_pixel_index + delta + screen_width;
-        else if ((marker_pixel_index + delta) > screen_width)
-            marker_pixel_index = marker_pixel_index + delta - screen_width;
-        else
-            marker_pixel_index = marker_pixel_index + delta;
-        on_marker_change();
+        on_marker_change(delta);
     };
 
     field_marker.on_select = [this](TextField&) {
@@ -516,6 +518,14 @@ GlassView::GlassView(
         update_range_field();
     };
 
+    button_marker_minus.on_select = [this](Button&) {
+        on_marker_change(-1);
+    };
+
+    button_marker_plus.on_select = [this](Button&) {
+        on_marker_change(1);
+    };
+
     button_jump.on_select = [this](Button&) {
         // Launch Audio with peak frequency.
         launch_audio(max_freq_hold);
@@ -525,13 +535,6 @@ GlassView::GlassView(
         reset_live_view();
     };
 
-    field_rx_iq_phase_cal.set_range(0, hackrf_r9 ? 63 : 31);                 // max2839 has 6 bits [0..63],  max2837 has 5 bits [0..31]
-    field_rx_iq_phase_cal.set_value(get_spec_iq_phase_calibration_value());  // using  accessor function of AnalogAudioView to read iq_phase_calibration_value from rx_audio.ini
-    field_rx_iq_phase_cal.on_change = [this](int32_t v) {
-        set_spec_iq_phase_calibration_value(v);  // using  accessor function of AnalogAudioView to write inside SPEC submenu, register value to max283x and save it to rx_audio.ini
-    };
-    set_spec_iq_phase_calibration_value(get_spec_iq_phase_calibration_value());  // initialize iq_phase_calibration in radio
-
     display.scroll_set_area(109, screen_height - 1);  // Restart scroll on the correct coordinates
 
     // trigger:
@@ -581,15 +584,6 @@ void GlassView::on_freqchg(int64_t freq) {
     on_range_changed();
 }
 
-uint8_t GlassView::get_spec_iq_phase_calibration_value() {  // define accessor functions inside AnalogAudioView to read & write real iq_phase_calibration_value
-    return iq_phase_calibration_value;
-}
-
-void GlassView::set_spec_iq_phase_calibration_value(uint8_t cal_value) {  // define accessor functions
-    iq_phase_calibration_value = cal_value;
-    radio::set_rx_max283x_iq_phase_calibration(iq_phase_calibration_value);
-}
-
 void GlassView::load_presets() {
     File presets_file;
     auto error = presets_file.open(looking_glass_dir / u"PRESETS.TXT");

firmware/application/apps/ui_looking_glass_app.hpp

@@ -66,9 +66,6 @@ class GlassView : public View {
     void on_hide() override;
     void focus() override;
 
-    uint8_t get_spec_iq_phase_calibration_value();
-    void set_spec_iq_phase_calibration_value(uint8_t cal_value);
-
    private:
     NavigationView& nav_;
     Gradient gradient{};
@@ -80,11 +77,10 @@ class GlassView : public View {
     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
-    uint8_t iq_phase_calibration_value{15};  // initial default RX IQ phase calibration value , used for both max2837 & max2839
-    int32_t beep_squelch = 20;               // range from -100 to +20, >=20 disabled
-    bool beep_enabled = false;               // activate on bip button click
+    uint8_t live_frequency_view = 0;       // Spectrum
+    uint8_t live_frequency_integrate = 3;  // Default (3 * old value + new_value) / 4
+    int32_t beep_squelch = 20;             // range from -100 to +20, >=20 disabled
+    bool beep_enabled = false;             // activate on bip button click
     app_settings::SettingsManager settings_{
         "rx_glass"sv,
         app_settings::Mode::RX,
@@ -97,7 +93,6 @@ class GlassView : public View {
             {"scan_mode"sv, &mode},
             {"freq_view"sv, &live_frequency_view},
             {"freq_integrate"sv, &live_frequency_integrate},
-            {"iq_phase_calibration"sv, &iq_phase_calibration_value},  // we are saving and restoring that CAL from Settings.
             {"beep_squelch"sv, &beep_squelch},
             {"beep_enabled"sv, &beep_enabled},
         }};
@@ -116,9 +111,9 @@ class GlassView : public View {
     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();
+    void get_max_power(const ChannelSpectrum& spectrum, uint16_t bin, uint8_t& max_power);
+    rf::Frequency get_freq_from_bin_pos(uint16_t pos);
+    void on_marker_change(int8_t delta);
     void retune();
     bool process_bins(uint8_t* powerlevel);
     void on_channel_spectrum(const ChannelSpectrum& spectrum);
@@ -128,7 +123,7 @@ class GlassView : public View {
     void on_range_changed();
     void reset_live_view();
     void add_spectrum_pixel(uint8_t power);
-    void plot_marker(uint8_t pos);
+    void plot_marker(uint16_t pos);
     void load_presets();
     void populate_presets();
     void launch_audio(rf::Frequency center_freq);
@@ -138,7 +133,7 @@ class GlassView : public View {
     rf::Frequency f_center_ini{0};
 
     rf::Frequency marker{0};
-    uint8_t marker_pixel_index{0};
+    uint16_t marker_pixel_index{0};
     rf::Frequency marker_pixel_step{0};
 
     // Size of one spectrum bin in Hz.
@@ -173,8 +168,7 @@ class GlassView : public View {
         {{0, UI_POS_Y(0)}, "MIN:     MAX:     LNA   VGA  ", Theme::getInstance()->fg_light->foreground},
         {{0, 1 * 16}, "RANGE:       FILTER:     AMP:", Theme::getInstance()->fg_light->foreground},
         {{0, 2 * 16}, "P:", Theme::getInstance()->fg_light->foreground},
-        {{0, 3 * 16}, "MARKER:          MHz RXIQCAL", Theme::getInstance()->fg_light->foreground},
-        //{{0, 4 * 16}, "RES:    STEPS:", Theme::getInstance()->fg_light->foreground}};
+        {{0, 3 * 16}, "MARKER( / ):          MHz", Theme::getInstance()->fg_light->foreground},
         {{0, 4 * 16}, "RES:     VOL:", Theme::getInstance()->fg_light->foreground}};
 
     NumberField field_frequency_min{
@@ -223,16 +217,16 @@ class GlassView : public View {
         ""};
 
     TextField field_marker{
-        {7 * 8, 3 * 16, 9 * 8, 16},
+        {12 * 8, 3 * 16, 9 * 8, 16},
         ""};
 
-    NumberField field_rx_iq_phase_cal{
-        {28 * 8, 3 * 16},
-        2,
-        {0, 63},  // 5 or 6 bits IQ CAL phase adjustment (range updated later)
-        1,
-        ' ',
-    };
+    Button button_marker_minus{
+        {7 * 8, 3 * 16 + 4, 1 * 8, 1 * 8},
+        "-"};
+
+    Button button_marker_plus{
+        {9 * 8, 3 * 16 + 4, 1 * 8, 1 * 8},
+        "+"};
 
     NumberField field_trigger{
         {4 * 8, 4 * 16},

firmware/application/apps/ui_mictx.cpp

@@ -350,6 +350,12 @@ MicTXView::MicTXView(
                   &tx_button,
                   &tx_icon});
 
+    // disable key repeat on select
+    initial_switch_config_ = get_switches_repeat_config();
+    SwitchesState config = initial_switch_config_;
+    config[toUType(Switch::Sel)] = false;
+    set_switches_repeat_config(config);
+
     set_rxbw_options();
     set_rxbw_defaults(settings_.loaded());
 
@@ -640,6 +646,9 @@ MicTXView::MicTXView(
 }
 
 MicTXView::~MicTXView() {
+    // restore select key repeat mode
+    set_switches_repeat_config(initial_switch_config_);
+
     audio::input::stop();
     if (rx_enabled) {  // Also turn off both (audio rx if enabled, and disable  mic_loop to HP)
         rxaudio(false);

firmware/application/apps/ui_mictx.hpp

@@ -90,6 +90,9 @@ class MicTXView : public View {
         sampling_rate /* sampling rate */
     };
 
+    // structure used to control key repeat
+    SwitchesState initial_switch_config_{};
+
     enum Mic_Modulation : uint32_t {
         MIC_MOD_NFM = 0,
         MIC_MOD_WFM = 1,

firmware/application/apps/ui_settings.cpp

@@ -309,6 +309,39 @@ SetFrequencyCorrectionModel SetRadioView::form_collect() {
     };
 }
 
+/* SetTXLimitView ************************************/
+
+SetTXLimitView::SetTXLimitView(NavigationView& nav) {
+    add_children({
+        &labels,
+        &tx_gain_max_db,
+        &tx_disable_switch,
+        &tx_amp_disable_switch,
+        &button_save,
+        &button_cancel,
+    });
+
+    tx_disable_switch.set_value(pmem::config_tx_disabled());
+    tx_amp_disable_switch.set_value(pmem::config_tx_amp_disabled());
+    tx_gain_max_db.set_value(pmem::config_tx_gain_max_db());
+
+    button_save.on_select = [&nav, this](Button&) {
+        pmem::set_config_tx_disabled(tx_disable_switch.value());
+        pmem::set_config_tx_amp_disabled(tx_amp_disable_switch.value());
+        pmem::set_config_tx_gain_max_db(tx_gain_max_db.value());
+        send_system_refresh();
+        nav.pop();
+    };
+
+    button_cancel.on_select = [&nav, this](Button&) {
+        nav.pop();
+    };
+}
+
+void SetTXLimitView::focus() {
+    button_save.focus();
+}
+
 /* SetUIView *********************************************/
 
 SetUIView::SetUIView(NavigationView& nav) {
@@ -1107,6 +1140,7 @@ void SettingsMenuView::on_populate() {
         {"Freq. Correct", ui::Color::dark_cyan(), &bitmap_icon_options_radio, [this]() { nav_.push<SetFrequencyCorrectionView>(); }},
         {"P.Memory Mgmt", ui::Color::dark_cyan(), &bitmap_icon_memory, [this]() { nav_.push<SetPersistentMemoryView>(); }},
         {"Radio", ui::Color::dark_cyan(), &bitmap_icon_options_radio, [this]() { nav_.push<SetRadioView>(); }},
+        {"TX Limit", ui::Color::dark_cyan(), &bitmap_icon_options_radio, [this]() { nav_.push<SetTXLimitView>(); }},
         {"SD Card", ui::Color::dark_cyan(), &bitmap_icon_sdcard, [this]() { nav_.push<SetSDCardView>(); }},
         {"User Interface", ui::Color::dark_cyan(), &bitmap_icon_options_ui, [this]() { nav_.push<SetUIView>(); }},
         {"Display", ui::Color::dark_cyan(), &bitmap_icon_brightness, [this]() { nav_.push<SetDisplayView>(); }},

firmware/application/apps/ui_settings.hpp

@@ -264,6 +264,51 @@ class SetRadioView : public View {
     SetFrequencyCorrectionModel form_collect();
 };
 
+class SetTXLimitView : public View {
+   public:
+    SetTXLimitView(NavigationView& nav);
+
+    void focus() override;
+
+    std::string title() const override { return "TX Limit"; };
+
+   private:
+    Labels labels{
+        {{1 * 8, 1 * 16}, "Limits RF TX Gain", Theme::getInstance()->fg_light->foreground},
+        {{1 * 8, 2 * 16}, "(This may affect", Theme::getInstance()->fg_light->foreground},
+        {{1 * 8, 3 * 16}, "all applications.)", Theme::getInstance()->fg_light->foreground},
+        {{2 * 8, 12 * 16}, "TX Max Gain:", Theme::getInstance()->fg_light->foreground},
+
+    };
+
+    Checkbox tx_disable_switch{
+        {1 * 8, 6 * 16},
+        23,
+        "Disable TX"};
+
+    Checkbox tx_amp_disable_switch{
+        {1 * 8, 8 * 16},
+        23,
+        "Disable TX Amp"};
+
+    NumberField tx_gain_max_db{
+        {20 * 8, 12 * 16},
+        6,
+        {0, 47},
+        1,
+        ' ',
+    };
+
+    Button button_save{
+        {UI_POS_X_CENTER(12) - UI_POS_WIDTH(8), UI_POS_Y_BOTTOM(4), UI_POS_WIDTH(12), UI_POS_HEIGHT(2)},
+        "Save"};
+
+    Button button_cancel{
+        {UI_POS_X_CENTER(16) + UI_POS_WIDTH(8), UI_POS_Y_BOTTOM(4), UI_POS_WIDTH(12), UI_POS_HEIGHT(2)},
+        "Cancel",
+    };
+};
+
 using portapack::persistent_memory::backlight_timeout_t;
 
 class SetUIView : public View {

firmware/application/apps/ui_subghzd.cpp

@@ -242,6 +242,8 @@ const char* SubGhzDView::getSensorTypeName(FPROTO_SUBGHZD_SENSOR type) {
             return "GangQi";
         case FPS_MARANTEC24:
             return "Marantec24";
+        case FPS_HOLTEKHT6P20B:
+            return "Holtek HT6P20B";
         case FPS_Invalid:
         default:
             return "Unknown";
@@ -756,5 +758,11 @@ void SubGhzDRecentEntryDetailView::parseProtocol() {
         btn = entry_.data & 0xf;
         return;
     }
+
+    if (entry_.sensorType == FPS_HOLTEKHT6P20B) {
+        serial = entry_.data >> 8;
+        btn = (entry_.data >> 4) & 0xF;
+        return;
+    }
 }
-}  // namespace ui
+}  // namespace ui

firmware/application/baseband_api.cpp

@@ -52,12 +52,21 @@ static void send_message(const Message* const message) {
     creg::m0apptxevent::assert_event();
 
     if constexpr (check_for_message_hang) {
+#ifdef PRALINE
+        /* Timeout: ~3 seconds at typical clock speeds */
+        auto count = 200'000'000u;
+#else
         auto count = UINT32_MAX;
+#endif
         while (shared_memory.baseband_message && --count)
             /* spin */;
 
         if (count == 0)
+#ifdef PRALINE
+            chDbgPanic("BB Msg Timeout");
+#else
             chDbgPanic("Baseband Send Fail");
+#endif
     } else {
         while (shared_memory.baseband_message)
             /* spin */;
@@ -368,6 +377,26 @@ void set_subghzd_config(uint8_t modulation = 0, uint32_t sampling_rate = 0) {
     send_message(&message);
 }
 
+void set_moreserx_config(uint8_t mode) {
+    const MorseRXConfigureMessage message{mode};
+    send_message(&message);
+}
+
+void set_morsetx_config(uint8_t mode, uint32_t tone, float fm_delta) {
+    const MorseTXConfigureMessage message{mode, tone, fm_delta};
+    send_message(&message);
+}
+
+void set_morsetx_key(bool key_down) {
+    const MorseTXkeyMessage message{key_down};
+    send_message(&message);
+}
+
+void set_bitstream_config(uint32_t deviation, uint8_t mode) {
+    const StreamTXConfigurationMessage message{deviation, mode};
+    send_message(&message);
+}
+
 static bool baseband_image_running = false;
 
 void run_image(const spi_flash::image_tag_t image_tag) {

firmware/application/baseband_api.hpp

@@ -102,9 +102,13 @@ void set_siggen_tone(const uint32_t tone);
 void set_siggen_config(const uint32_t bw, const uint32_t shape, const uint32_t duration);
 void set_spectrum_painter_config(const uint16_t width, const uint16_t height, bool update, int32_t bw);
 void set_subghzd_config(uint8_t modulation, uint32_t sampling_rate);
+void set_moreserx_config(uint8_t mode);
+void set_morsetx_config(uint8_t mode, uint32_t tone, float fm_delta);
+void set_morsetx_key(bool key_down);
 void set_wefax_config(uint8_t lpm, uint8_t ioc);
 void set_noaaapt_config();
 void set_flex_config();
+void set_bitstream_config(uint32_t deviation, uint8_t mode);  // mode 0 for am, 1 for 2fsk
 
 void request_roger_beep();
 void request_rssi_beep();

firmware/application/bitmap.hpp

@@ -4297,7 +4297,7 @@ static constexpr Bitmap bitmap_icon_tpms{
     {16, 16},
     bitmap_icon_tpms_data};
 
-static constexpr uint8_t bitmap_icon_tranceivers_data[] = {
+static constexpr uint8_t bitmap_icon_transceivers_data[] = {
     0x80,
     0x01,
     0xC0,
@@ -4331,9 +4331,9 @@ static constexpr uint8_t bitmap_icon_tranceivers_data[] = {
     0xFF,
     0xFF,
 };
-static constexpr Bitmap bitmap_icon_tranceivers{
+static constexpr Bitmap bitmap_icon_transceivers{
     {16, 16},
-    bitmap_icon_tranceivers_data};
+    bitmap_icon_transceivers_data};
 
 static constexpr uint8_t bitmap_icon_transmit_data[] = {
     0x80,

firmware/application/clock_manager.cpp

@@ -23,6 +23,7 @@
 
 #include "portapack_persistent_memory.hpp"
 #include "portapack_io.hpp"
+#include "portapack.hpp"
 
 #include "hackrf_hal.hpp"
 using namespace hackrf::one;
@@ -30,6 +31,14 @@ using namespace hackrf::one;
 #include "lpc43xx_cpp.hpp"
 using namespace lpc43xx;
 
+#ifdef PRALINE
+extern "C" {
+#include "fpga_bridge.h"
+}
+// Need access to ssp1_arbiter from radio namespace
+#include "radio.hpp"
+#endif
+
 constexpr uint32_t si5351_vco_f = 800000000;
 
 constexpr si5351::Inputs si5351_inputs{
@@ -54,6 +63,12 @@ constexpr si5351::PLL si5351_pll_xtal_25m{
     .c = 1,
 };
 constexpr auto si5351_pll_a_xtal_reg = si5351_pll_xtal_25m.reg(0);
+#ifdef PRALINE
+static_assert(si5351_pll_xtal_25m.f_vco() == si5351_vco_f, "PLL XTAL frequency wrong");
+static_assert(si5351_pll_xtal_25m.p1() == 3584, "PLL XTAL P1 wrong");
+static_assert(si5351_pll_xtal_25m.p2() == 0, "PLL XTAL P2 wrong");
+static_assert(si5351_pll_xtal_25m.p3() == 1, "PLL XTAL P3 wrong");
+#endif
 
 constexpr si5351::PLL si5351_pll_clkin_10m{
     .f_in = si5351_inputs.f_clkin_out(),
@@ -64,10 +79,12 @@ constexpr si5351::PLL si5351_pll_clkin_10m{
 constexpr auto si5351c_pll_b_clkin_reg = si5351_pll_clkin_10m.reg(1);
 constexpr auto si5351a_pll_a_clkin_reg = si5351_pll_clkin_10m.reg(0);
 
+#ifndef PRALINE
 static_assert(si5351_pll_xtal_25m.f_vco() == si5351_vco_f, "PLL XTAL frequency wrong");
 static_assert(si5351_pll_xtal_25m.p1() == 3584, "PLL XTAL P1 wrong");
 static_assert(si5351_pll_xtal_25m.p2() == 0, "PLL XTAL P2 wrong");
 static_assert(si5351_pll_xtal_25m.p3() == 1, "PLL XTAL P3 wrong");
+#endif
 
 static_assert(si5351_pll_clkin_10m.f_vco() == si5351_vco_f, "PLL CLKIN frequency wrong");
 static_assert(si5351_pll_clkin_10m.p1() == 9728, "PLL CLKIN P1 wrong");
@@ -101,6 +118,22 @@ constexpr si5351::MultisynthFractional si5351_ms_0_8m{
 };
 constexpr auto si5351c_ms_0_8m_reg = si5351_ms_0_8m.reg(clock_generator_output_og_codec);
 
+#ifdef PRALINE
+// Verify compile-time values for 8 MHz config
+static_assert(si5351_ms_0_8m.p1() == 5888, "MS0 8MHz P1 should be 5888 (0x1700)");
+static_assert(si5351_ms_0_8m.p2() == 0, "MS0 8MHz P2 should be 0");
+static_assert(si5351_ms_0_8m.p3() == 1, "MS0 8MHz P3 should be 1");
+static_assert(si5351_ms_0_8m.f_out() == 8000000, "MS0 should output 8 MHz");
+
+// Verify register array encoding
+static_assert(si5351c_ms_0_8m_reg[0] == 42, "MS0 base register should be 42");
+static_assert(si5351c_ms_0_8m_reg[1] == 0x00, "MS0 reg43 P3[15:8] should be 0x00");
+static_assert(si5351c_ms_0_8m_reg[2] == 0x01, "MS0 reg44 P3[7:0] should be 0x01");
+static_assert(si5351c_ms_0_8m_reg[3] == 0x10, "MS0 reg45 R_DIV should be 0x10");
+static_assert(si5351c_ms_0_8m_reg[4] == 0x17, "MS0 reg46 P1[15:8] should be 0x17");
+static_assert(si5351c_ms_0_8m_reg[5] == 0x00, "MS0 reg47 P1[7:0] should be 0x00");
+#endif
+
 constexpr si5351::MultisynthFractional si5351_ms_group{
     .f_src = si5351_vco_f,
     .a = 80, /* Don't care */
@@ -204,7 +237,11 @@ constexpr ClockControls si5351c_clock_control_common{{
 }};
 
 constexpr ClockControls si5351a_clock_control_common{{
+#ifndef PRALINE
     {ClockControl::ClockCurrentDrive::_6mA, ClockControl::ClockSource::MS_Self, ClockControl::ClockInvert::Normal, ClockControl::MultiSynthSource::PLLA, ClockControl::MultiSynthMode::Integer, ClockControl::ClockPowerDown::Power_Off},
+#else
+    {ClockControl::ClockCurrentDrive::_6mA, ClockControl::ClockSource::MS_Self, ClockControl::ClockInvert::Normal, ClockControl::MultiSynthSource::PLLA, ClockControl::MultiSynthMode::Fractional, ClockControl::ClockPowerDown::Power_Off},  // CLK0: MUST be Fractional for 8 MHz!
+#endif
     {ClockControl::ClockCurrentDrive::_4mA, ClockControl::ClockSource::MS_Self, ClockControl::ClockInvert::Normal, ClockControl::MultiSynthSource::PLLA, ClockControl::MultiSynthMode::Fractional, ClockControl::ClockPowerDown::Power_Off},
     {ClockControl::ClockCurrentDrive::_8mA, ClockControl::ClockSource::MS_Self, ClockControl::ClockInvert::Normal, ClockControl::MultiSynthSource::PLLA, ClockControl::MultiSynthMode::Integer, ClockControl::ClockPowerDown::Power_Off},
     {ClockControl::ClockCurrentDrive::_2mA, ClockControl::ClockSource::MS_Self, ClockControl::ClockInvert::Normal, ClockControl::MultiSynthSource::PLLA, ClockControl::MultiSynthMode::Integer, ClockControl::ClockPowerDown::Power_Off},
@@ -255,9 +292,48 @@ static void portapack_tcxo_disable() {
 using namespace hackrf::one;
 
 void ClockManager::init_clock_generator() {
+#ifdef PRALINE
+    // PRALINE: Configure clock input mux GPIO
+    // GPIO0_15 (clkin_ctrl) selects GP_CLKIN source:
+    //   0 = P1 connector (external)
+    //   1 = P22 (internal Si5351 CLK2)
+    constexpr GPIO gpio_clkin_ctrl = gpio[GPIO0_15];
+    gpio_clkin_ctrl.output();
+    gpio_clkin_ctrl.write(1);  // CLKIN_SIGNAL_P22 = 1 = internal Si5351 CLK2
+
+    // Also enable MCU clock gate (GPIO0_8)
+    gpio_r9_mcu_clk_en.output();
+    gpio_r9_mcu_clk_en.write(1);
+#else
+    // HackRF One r9: GPIO0_8 (mcu_clk_en) gates Si5351 CLK2/CLK7 to GP_CLKIN
+    if (hackrf_r9) {
+        gpio_r9_mcu_clk_en.output();
+        gpio_r9_mcu_clk_en.write(1);
+    }
+#endif
+
     clock_generator.reset();
     clock_generator.set_crystal_internal_load_capacitance(CrystalInternalLoadCapacitance::XTAL_CL_8pF);
     clock_generator.enable_fanout();
+
+#ifdef PRALINE
+    /* PRALINE has Si5351A (NOT Si5351C like HackRF One OG).
+     * Must use Si5351A configuration: PLLA only, no CLKIN support.
+     *
+     * IMPORTANT: Follow HackRF reference sequence:
+     * 1. Set PLL input sources
+     * 2. Configure PLL and multisynths
+     * 3. Set clock control registers (AFTER multisynths!)
+     * 4. Reset PLLs
+     * 5. Enable outputs
+     */
+    clock_generator.set_pll_input_sources(si5351a_pll_input_sources);
+
+    /* Skip MCU CLKIN setup and reference detection for PRALINE - not applicable */
+    reference = Reference{ReferenceSource::Xtal, 0};
+
+    /* Clock control will be set AFTER multisynth configuration - see below */
+#else
     clock_generator.set_pll_input_sources(hackrf_r9
                                               ? si5351a_pll_input_sources
                                               : si5351c_pll_input_sources);
@@ -298,7 +374,62 @@ void ClockManager::init_clock_generator() {
         si5351_clock_control_common[7].ms_src(ref_pll),
     }};
     clock_generator.set_clock_control(si5351_clock_control);
+#endif
 
+#ifdef PRALINE
+    /* PRALINE uses Si5351A with:
+     * CLK0 = AFE_CLK (codec/FPGA sample clock)
+     * CLK1 = SCT_CLK (FPGA timing clock at 2x sample rate)
+     * CLK4 = first IF (RFFC5072)
+     * CLK5 = second IF (MAX2831)
+     * Uses PLLA on XTAL only (no CLKIN support).
+     */
+
+    /* Step 1: Write PLL A configuration (800 MHz VCO from 25 MHz XTAL) */
+    /* Use single-byte writes to debug I2C issues */
+    {
+        const auto& pll_regs = si5351_pll_a_xtal_reg;
+        const uint8_t base_reg = pll_regs[0];
+        for (size_t i = 1; i < pll_regs.size(); i++) {
+            clock_generator.write_register(base_reg + i - 1, pll_regs[i]);
+        }
+    }
+
+    /* Step 2: Write multisynth configurations using single-byte writes */
+    clock_generator.write_ms_single_byte(0, si5351_ms_0_8m);  // MS0 = divider 50, r_div=1 for 8 MHz
+    clock_generator.write_ms_single_byte(1, si5351_ms_16m);   // MS1 = divider 50, r_div=0 for 16 MHz
+
+    /* CLK4 and CLK5 - use single-byte writes too */
+    {
+        const auto& ms4_regs = si5351c_ms_4_reg;
+        const uint8_t base_reg = ms4_regs[0];
+        for (size_t i = 1; i < ms4_regs.size(); i++) {
+            clock_generator.write_register(base_reg + i - 1, ms4_regs[i]);
+        }
+    }
+    {
+        const auto& ms5_regs = si5351c_ms_5_reg;
+        const uint8_t base_reg = ms5_regs[0];
+        for (size_t i = 1; i < ms5_regs.size(); i++) {
+            clock_generator.write_register(base_reg + i - 1, ms5_regs[i]);
+        }
+    }
+    clock_generator.write(si5351a_ms6_7_off_reg);  // MS6/7 off - short write is OK
+
+    /* Step 3: NOW set clock control registers (AFTER multisynths per HackRF reference) */
+    const auto ref_pll = ClockControl::MultiSynthSource::PLLA;
+    const ClockControls si5351_clock_control = ClockControls{{
+        si5351a_clock_control_common[0].ms_src(ref_pll),
+        si5351a_clock_control_common[1].ms_src(ref_pll),
+        si5351a_clock_control_common[2].ms_src(ref_pll),
+        si5351a_clock_control_common[3].ms_src(ref_pll),
+        si5351a_clock_control_common[4].ms_src(ref_pll),
+        si5351a_clock_control_common[5].ms_src(ref_pll),
+        si5351a_clock_control_common[6].ms_src(ref_pll),
+        si5351a_clock_control_common[7].ms_src(ref_pll),
+    }};
+    clock_generator.set_clock_control(si5351_clock_control);
+#else
     if (hackrf_r9) {
         const PLLReg pll_reg = (reference.source == ReferenceSource::Xtal)
                                    ? si5351_pll_a_xtal_reg
@@ -319,21 +450,45 @@ void ClockManager::init_clock_generator() {
         clock_generator.write(si5351c_ms_5_reg);
         clock_generator.write(si5351c_ms6_7_off_mcu_clkin_reg);
     }
+#endif
 
     clock_generator.reset_plls();
 
     // Wait for PLL(s) to lock.
+#ifdef PRALINE
+    // PRALINE: Wait for PLLA to lock (0x20 = LOL_A bit)
+    uint8_t device_status_mask = 0x20;
+    uint32_t pll_timeout = 100000;
+    while ((clock_generator.device_status() & device_status_mask) != 0 && pll_timeout > 0) {
+        pll_timeout--;
+    }
+    // Store PLL lock status for debugging
+    static volatile uint32_t pll_lock_timeout = pll_timeout;
+    (void)pll_lock_timeout;
+
+    // CRITICAL: Add delay to ensure Si5351 writes complete before I2C bus stops
+    chThdSleepMilliseconds(100);
+#else
+    // Wait for PLL(s) to lock - with timeout to prevent hang
     uint8_t device_status_mask = hackrf_r9
                                      ? 0x20
                                  : (ref_pll == ClockControl::MultiSynthSource::PLLB)
                                      ? 0x40
                                      : 0x20;
+#ifndef PRALINE
     while ((clock_generator.device_status() & device_status_mask) != 0);
+#else
+    uint32_t pll_timeout = 100000;
+    while ((clock_generator.device_status() & device_status_mask) != 0 && pll_timeout > 0) {
+        pll_timeout--;
+    }
+#endif
 
     clock_generator.set_clock_control(
         clock_generator_output_mcu_clkin,
         si5351_clock_control_common[clock_generator_output_mcu_clkin].ms_src(ref_pll).clk_pdn(ClockControl::ClockPowerDown::Power_On));
     clock_generator.enable_output(clock_generator_output_mcu_clkin);
+#endif
 }
 
 uint32_t ClockManager::measure_gp_clkin_frequency() {
@@ -400,6 +555,15 @@ void ClockManager::shutdown() {
 }
 
 void ClockManager::enable_codec_clocks() {
+#ifdef PRALINE
+    /* PRALINE: CLK0 (AFE_CLK) for codec/FPGA, CLK1 (SCT_CLK) for FPGA timing.
+     * Reference hackrf_core.c shows PRALINE needs both CLK0 and CLK1. */
+    clock_generator.enable_clock(clock_generator_output_og_codec); /* CLK0 */
+    clock_generator.enable_clock(clock_generator_output_og_cpld);  /* CLK1 */
+    clock_generator.enable_output_mask(
+        (1U << clock_generator_output_og_codec) |
+        (1U << clock_generator_output_og_cpld));
+#else
     if (hackrf_r9) {
         clock_generator.enable_clock(clock_generator_output_r9_sgpio);
     } else {
@@ -417,6 +581,7 @@ void ClockManager::enable_codec_clocks() {
         clock_generator.enable_output_mask(
             (1U << clock_generator_output_og_codec) | (1U << clock_generator_output_og_cpld) | (1U << clock_generator_output_og_sgpio));
     }
+#endif
 }
 
 void ClockManager::disable_codec_clocks() {
@@ -424,6 +589,14 @@ void ClockManager::disable_codec_clocks() {
      * be enabled for the output to come to rest at the state specified by
      * CLKx_DISABLE_STATE.
      */
+#ifdef PRALINE
+    /* PRALINE: CLK0 (AFE_CLK) and CLK1 (SCT_CLK) used for codec/FPGA */
+    clock_generator.disable_output_mask(
+        (1U << clock_generator_output_og_codec) |
+        (1U << clock_generator_output_og_cpld));
+    clock_generator.disable_clock(clock_generator_output_og_codec);
+    clock_generator.disable_clock(clock_generator_output_og_cpld);
+#else
     if (hackrf_r9) {
         clock_generator.disable_output_mask(1U << clock_generator_output_r9_sgpio);
         clock_generator.disable_clock(clock_generator_output_r9_sgpio);
@@ -434,9 +607,17 @@ void ClockManager::disable_codec_clocks() {
         clock_generator.disable_clock(clock_generator_output_og_cpld);
         clock_generator.disable_clock(clock_generator_output_og_sgpio);
     }
+#endif
 }
 
 void ClockManager::enable_if_clocks() {
+#ifdef PRALINE
+    /* PRALINE uses CLK4 (first IF) and CLK5 (second IF) like original HackRF One */
+    clock_generator.enable_clock(clock_generator_output_og_first_if);
+    clock_generator.enable_output_mask(1U << clock_generator_output_og_first_if);
+    clock_generator.enable_clock(clock_generator_output_og_second_if);
+    clock_generator.enable_output_mask(1U << clock_generator_output_og_second_if);
+#else
     if (hackrf_r9) {
         clock_generator.enable_clock(clock_generator_output_r9_if);
         clock_generator.enable_output_mask(1U << clock_generator_output_r9_if);
@@ -446,9 +627,16 @@ void ClockManager::enable_if_clocks() {
         clock_generator.enable_clock(clock_generator_output_og_second_if);
         clock_generator.enable_output_mask(1U << clock_generator_output_og_second_if);
     }
+#endif
 }
 
 void ClockManager::disable_if_clocks() {
+#ifdef PRALINE
+    clock_generator.disable_output_mask(1U << clock_generator_output_og_first_if);
+    clock_generator.disable_clock(clock_generator_output_og_first_if);
+    clock_generator.disable_output_mask(1U << clock_generator_output_og_second_if);
+    clock_generator.disable_clock(clock_generator_output_og_second_if);
+#else
     if (hackrf_r9) {
         clock_generator.disable_output_mask(1U << clock_generator_output_r9_if);
         clock_generator.disable_clock(clock_generator_output_r9_if);
@@ -458,19 +646,39 @@ void ClockManager::disable_if_clocks() {
         clock_generator.disable_output_mask(1U << clock_generator_output_og_second_if);
         clock_generator.disable_clock(clock_generator_output_og_second_if);
     }
+#endif
 }
 
 void ClockManager::set_sampling_frequency(const uint32_t frequency) {
+#ifdef PRALINE
+    /* PRALINE: CLK0=AFE_CLK runs at sample rate (VCO/divider/2)
+     *          CLK1=SCT_CLK runs at 2x sample rate (VCO/divider/1)
+     * Reference: hackrf_core.c sample_rate_frac_set() lines 580-582
+     */
+
+    /* PRALINE: Match HackRF USB  sample_rate_frac_set()
+     * Reference: hackrf_usb radio.c lines 29-91, hackrf_core.c lines 501-685 */
+
+    // Set FPGA decimation to 0 (no decimation) for direct passthrough
+    fpga_debug_register_write(2, 0);
+    radio::invalidate_spi_config();
+
+    // The following was originally from @kitty. Adopting for testing radio.
+    clock_generator.set_ms_frequency(0, frequency * 2, si5351_vco_f, 1);  // CLK0: r_div=1 (÷2)
+    clock_generator.set_ms_frequency(1, frequency * 2, si5351_vco_f, 0);  // CLK1: r_div=0 (÷1)
+#else
     /* Codec clock is at sampling frequency, CPLD and SGPIO clocks are at
      * twice the frequency, and derived from the MS0 synth. So it's only
      * necessary to change the MS0 synth frequency, and ensure the output
      * is divided by two.
      */
+
     if (hackrf_r9) {
         clock_generator.set_ms_frequency(clock_generator_output_r9_sgpio, frequency * 2, si5351_vco_f, 0);
     } else {
         clock_generator.set_ms_frequency(clock_generator_output_og_codec, frequency * 2, si5351_vco_f, 1);
     }
+#endif
 }
 
 void ClockManager::set_reference_ppb(const int32_t ppb) {
@@ -510,7 +718,15 @@ void ClockManager::start_frequency_monitor_measurement(const cgu::CLK_SEL clk_se
 
 void ClockManager::wait_For_frequency_monitor_measurement_done() {
     // FREQ_MON mechanism fails to finish if there's no clock present on selected input?!
+#ifndef PRALINE
     while (LPC_CGU->FREQ_MON.MEAS == 1);
+#else
+    // PRALINE FIX: Add timeout to prevent infinite hang
+    uint32_t timeout = 100000;
+    while (LPC_CGU->FREQ_MON.MEAS == 1 && timeout > 0) {
+        timeout--;
+    }
+#endif
 }
 
 uint32_t ClockManager::get_frequency_monitor_measurement_in_hertz() {
@@ -521,6 +737,35 @@ uint32_t ClockManager::get_frequency_monitor_measurement_in_hertz() {
 }
 
 void ClockManager::start_audio_pll() {
+#ifdef PRALINE
+    /* PRALINE: Use 12MHz XTAL for audio PLL
+     * For 12MHz XTAL input, 48kHz audio rate, 256Fs MCLK:
+     *   Fout=12.288MHz, Fcco=491.52MHz
+     *   12MHz * 1024 / 25 = 491.52MHz
+     *   MSEL=1024, NSEL=25, PSEL=20
+     */
+    cgu::pll0audio::ctrl({
+        .pd = 1,
+        .bypass = 0,
+        .directi = 0,
+        .directo = 0,
+        .clken = 0,
+        .frm = 0,
+        .autoblock = 1,
+        .pllfract_req = 0,
+        .sel_ext = 1,
+        .mod_pd = 1,
+        .clk_sel = cgu::CLK_SEL::XTAL,
+    });
+
+    cgu::pll0audio::mdiv({
+        .mdec = 22625UL,  // MDEC for MSEL=1024
+    });
+    cgu::pll0audio::np_div({
+        .pdec = 31,  // PSEL=20
+        .ndec = 69,  // NDEC for NSEL=25
+    });
+#else
     cgu::pll0audio::ctrl({
         .pd = 1,
         .bypass = 0,
@@ -549,13 +794,24 @@ void ClockManager::start_audio_pll() {
         .pdec = 31,
         .ndec = 45,
     });
+#endif
 
     cgu::pll0audio::frac({
         .pllfract_ctrl = 0,
     });
 
     cgu::pll0audio::power_up();
+#ifndef PRALINE
     while (!cgu::pll0audio::is_locked());
+#else
+    // PRALINE FIX: Add timeout to prevent infinite hang if GP_CLKIN not present
+    {
+        uint32_t timeout = 100000;
+        while (!cgu::pll0audio::is_locked() && timeout > 0) {
+            timeout--;
+        }
+    }
+#endif
     cgu::pll0audio::clock_enable();
 
     set_base_audio_clock_divider(1);

firmware/application/clock_manager.hpp

@@ -72,6 +72,13 @@ class ClockManager {
 
     void set_reference_ppb(const int32_t ppb);
 
+#ifdef PRALINE
+    // Si5351 diagnostic methods
+    uint8_t si5351_read_status() { return clock_generator.device_status(); }
+    uint8_t si5351_read_register(uint8_t reg) { return clock_generator.read_register(reg); }
+    void si5351_write_register(uint8_t reg, uint8_t value) { clock_generator.write_register(reg, value); }
+#endif
+
     uint32_t get_frequency_monitor_measurement_in_hertz();
 
     Reference get_reference() const;

firmware/application/external/app_manager/ui_app_manager.cpp

@@ -62,19 +62,24 @@ AppManagerView::AppManagerView(NavigationView& nav)
         auto app_name = get_app_info(menu_view.highlighted_index(), true);
         auto app_id = get_app_info(menu_view.highlighted_index(), false);
 
-        info += "Hidden:";
+        if (!app_name.empty()) {
+            info += "Hidden:";
 
-        if (is_blacklisted(app_name)) {
-            info += "Yes ";
-        } else {
-            info += "No ";
+            if (is_blacklisted(app_name)) {
+                info += "Yes ";
+            } else {
+                info += "No ";
+            }
         }
 
-        info += "Autostart:";
-        if (is_autostart_app(app_id)) {
-            info += "Yes";
-        } else {
-            info += "No";
+        if (!app_id.empty()) {
+            info += "Autostart:";
+
+            if (is_autostart_app(app_id)) {
+                info += "Yes";
+            } else {
+                info += "No";
+            }
         }
 
         if (info.empty()) {
@@ -82,6 +87,8 @@ AppManagerView::AppManagerView(NavigationView& nav)
         }
 
         text_app_info.set(info);
+        button_hide_unhide.set_focusable(!app_name.empty());
+        button_set_cancel_autostart.set_focusable(!app_id.empty());
     };
 
     button_hide_unhide.on_select = [this](Button&) {
@@ -120,27 +127,23 @@ void AppManagerView::refresh_list() {
     };
 
     for (auto& app : NavigationView::appList) {
-        if (app.id == nullptr) continue;
-
         app_list_index++;
 
-        menu_view.add_item({app.displayName + std::string(is_autostart_app(app.id) ? padding(app.displayName) : ""),
+        menu_view.add_item({app.displayName + std::string((app.id != nullptr && is_autostart_app(app.id)) ? padding(app.displayName) : ""),
                             app.iconColor,
                             app.icon,
-                            [this, app_id = std::string(app.id)](KeyEvent) {
+                            [this, app_id = std::string(app.id != nullptr ? app.id : "")](KeyEvent) {
                                 button_hide_unhide.focus();
                             }});
     }
 
     ExternalItemsMenuLoader::load_all_external_items_callback([this, &index, &padding](ui::AppInfoConsole& app) {
-        if (app.appCallName == nullptr) return;
-
         app_list_index++;
 
-        menu_view.add_item({app.appFriendlyName + std::string(is_autostart_app(app.appCallName) ? padding(app.appFriendlyName) : ""),
+        menu_view.add_item({app.appFriendlyName + std::string((app.appCallName != nullptr && is_autostart_app(app.appCallName)) ? padding(app.appFriendlyName) : ""),
                             ui::Color::light_grey(),
                             &bitmap_icon_sdcard,
-                            [this, app_id = std::string(app.appCallName)](KeyEvent) {
+                            [this, app_id = std::string(app.appCallName != nullptr ? app.appCallName : "")](KeyEvent) {
                                 button_hide_unhide.focus();
                             }});
     });
@@ -156,19 +159,29 @@ void AppManagerView::hide_app() {
     std::vector<std::string> blacklist;
     get_blacklist(blacklist);
 
-    blacklist.push_back(get_app_info(menu_view.highlighted_index(), true));
+    auto app_name = get_app_info(menu_view.highlighted_index(), true);
+    if (app_name.empty()) return;
+
+    blacklist.push_back(app_name);
     write_blacklist(blacklist);
 }
 
 void AppManagerView::unhide_app() {
     std::vector<std::string> blacklist;
     get_blacklist(blacklist);
-    blacklist.erase(std::remove(blacklist.begin(), blacklist.end(), get_app_info(menu_view.highlighted_index(), true)), blacklist.end());
+
+    auto app_name = get_app_info(menu_view.highlighted_index(), true);
+    if (app_name.empty()) return;
+
+    blacklist.erase(std::remove(blacklist.begin(), blacklist.end(), app_name), blacklist.end());
     write_blacklist(blacklist);
 }
 
 void AppManagerView::hide_unhide_app() {
-    if (is_blacklisted(get_app_info(menu_view.highlighted_index(), true)))
+    auto app_name = get_app_info(menu_view.highlighted_index(), true);
+    if (app_name.empty()) return;
+
+    if (is_blacklisted(app_name))
         unhide_app();
     else
         hide_app();
@@ -218,6 +231,7 @@ void AppManagerView::set_auto_start() {
     if (app_index >= app_list_index) return;
 
     auto id_aka_app_call_name = get_app_info(app_index, false);
+    if (id_aka_app_call_name.empty()) return;
 
     autostart_app = id_aka_app_call_name;
 
@@ -234,6 +248,7 @@ void AppManagerView::set_unset_autostart_app() {
     if (app_index >= app_list_index) return;
 
     auto id_aka_friendly_name = get_app_info(app_index, false);
+    if (id_aka_friendly_name.empty()) return;
 
     if (is_autostart_app(id_aka_friendly_name))
         unset_auto_start();
@@ -254,17 +269,15 @@ std::string AppManagerView::get_app_info(uint16_t index, bool is_display_name) {
     std::string result;
 
     for (auto& app : NavigationView::appList) {
-        if (app.id == nullptr) continue;
         if (current_index == index) {
-            return is_display_name ? std::string(app.displayName) : std::string(app.id);
+            return is_display_name ? std::string(app.displayName != nullptr ? app.displayName : "") : std::string(app.id != nullptr ? app.id : "");
         }
         current_index++;
     }
 
     ExternalItemsMenuLoader::load_all_external_items_callback([&current_index, &index, &result, &is_display_name](ui::AppInfoConsole& app) {
-        if (app.appCallName == nullptr) return;
         if (current_index == index) {
-            result = is_display_name ? app.appFriendlyName : app.appCallName;
+            result = is_display_name ? (app.appFriendlyName != nullptr ? app.appFriendlyName : "") : (app.appCallName != nullptr ? app.appCallName : "");
         }
         current_index++;
     });

firmware/application/external/external.cmake

@@ -91,9 +91,9 @@ set(EXTCPPSRC
 	external/adsbtx/main.cpp
 	external/adsbtx/ui_adsb_tx.cpp
 
-	#morse_tx 768 bytes
-	external/morse_tx/main.cpp
-	external/morse_tx/ui_morse.cpp
+	#morse_tx 768 bytes -- disabled because of the new morse tx app with more functions
+	#external/morse_tx/main.cpp
+	#external/morse_tx/ui_morse.cpp
 
 	#sstvtx 456 bytes
 	external/sstvtx/main.cpp
@@ -222,7 +222,11 @@ set(EXTCPPSRC
 
 	#gfxEQ 80 byte
 	external/gfxeq/main.cpp
-	external/gfxeq/ui_gfxeq.cpp
+	external/gfxeq/ui_gfxeq.cpp	
+
+	#waterfall designer
+	external/waterfall_designer/main.cpp
+	external/waterfall_designer/ui_waterfall_designer.cpp
 
 	#detector_rx  168 byte
 	external/detector_rx/main.cpp
@@ -276,6 +280,18 @@ set(EXTCPPSRC
 	#subcarrx
 	external/subcarrx/main.cpp
 	external/subcarrx/ui_subcar.cpp
+
+	#siggen
+	external/siggen/main.cpp
+	external/siggen/ui_siggen.cpp
+
+	#morse_radio
+	external/morse_radio/main.cpp
+	external/morse_radio/ui_morse_radio.cpp
+
+	#morseradiotx
+	external/morseradiotx/main.cpp
+	external/morseradiotx/ui_morse_radiotx.cpp
 )
 
 set(EXTAPPLIST
@@ -300,7 +316,7 @@ set(EXTAPPLIST
 	tpmsrx
 	protoview
 	adsbtx
-	morse_tx
+	#morse_tx
 	sstvtx
 	sstvrx
 	random_password
@@ -332,6 +348,7 @@ set(EXTAPPLIST
 	scanner
 	level
 	gfxeq
+	waterfall_designer
 	detector_rx
 	spaceinv
 	blackjack
@@ -345,4 +362,17 @@ set(EXTAPPLIST
 	adult_toys_controller
 	flex_rx
 	subcarrx
+	siggen
+	morse_radio
+	morseradiotx
 )
+
+# sdusb has type conflicts with PRALINE (HackRF Pro) - add only for non-PRALINE builds
+if(NOT BOARD STREQUAL "PRALINE")
+       list(APPEND EXTCPPSRC
+               external/sdusb/main.cpp
+               external/sdusb/ui_sd_over_usb.cpp
+       )
+       list(APPEND EXTAPPLIST sdusb)
+endif()
+

firmware/application/external/external.ld

@@ -89,7 +89,11 @@ MEMORY
     ram_external_app_flex_rx  (rwx) : org = 0xADF00000, len = 32k
     ram_external_app_sstvrx  (rwx) : org = 0xADF10000, len = 32k
     ram_external_app_subcarrx  (rwx) : org = 0xADF20000, len = 32k
-
+    ram_external_app_siggen  (rwx) : org = 0xADF30000, len = 32k
+    ram_external_app_sdusb  (rwx) : org = 0xADF40000, len = 32k
+    ram_external_app_morse_radio  (rwx) : org = 0xADF50000, len = 32k
+    ram_external_app_waterfall_designer (rwx) : org = 0xADF60000, len = 32k
+    ram_external_app_morseradiotx  (rwx) : org = 0xADF70000, len = 32k
 }
 
 SECTIONS
@@ -400,6 +404,12 @@ SECTIONS
         *(*ui*external_app*gfxeq*);
     } > ram_external_app_gfxeq
 
+    .external_app_waterfall_designer : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_waterfall_designer.application_information));
+        *(*ui*external_app*waterfall_designer*);
+    } > ram_external_app_waterfall_designer
+
     .external_app_detector_rx : ALIGN(4) SUBALIGN(4)
     {
         KEEP(*(.external_app.app_detector_rx.application_information));
@@ -492,6 +502,29 @@ SECTIONS
         *(*ui*external_app*subcarrx*);
     } > ram_external_app_subcarrx
 
-    
+    .external_app_siggen : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_siggen.application_information));
+        *(*ui*external_app*siggen*);
+    } > ram_external_app_siggen
+
+     .external_app_sdusb : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_sdusb.application_information));
+        *(*ui*external_app*sdusb*);
+    } > ram_external_app_sdusb
+   
+    .external_app_morse_radio : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_morse_radio.application_information));
+        *(*ui*external_app*morse_radio*);
+    } > ram_external_app_morse_radio
+
+    .external_app_morseradiotx : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_morseradiotx.application_information));
+        *(*ui*external_app*morseradiotx*);
+    } > ram_external_app_morseradiotx
+
 }
 

firmware/application/external/flippertx/ui_flippertx.cpp

@@ -80,7 +80,7 @@ bool FlipperTxView::on_file_changed(std::filesystem::path new_file_path) {
         return false;
     }
     preset = submeta.value().preset;
-    if (preset != FLIPPER_PRESET_OOK) {
+    if (preset != FLIPPER_PRESET_OOK && preset != FLIPPER_PRESET_2FSK) {
         field_filename.set_text("File: err, not supp. preset");
         return false;
     }
@@ -108,8 +108,13 @@ void FlipperTxView::stop() {
 bool FlipperTxView::start() {
     if (filename.empty()) return false;
     baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    transmitter_model.set_sampling_rate(OOK_SAMPLERATE);
     transmitter_model.enable();
     button_startstop.set_text(LanguageHelper::currentMessages[LANG_STOP]);
+    uint8_t mode = 0;
+    if (preset == FLIPPER_PRESET_2FSK)
+        mode = 1;
+    baseband::set_bitstream_config(FM_DEVIATION, mode);
     // start thread
     replay_thread = std::make_unique<FlipperPlayThread>(
         filename,

firmware/application/external/flippertx/ui_flippertx.hpp

@@ -28,6 +28,8 @@ using namespace ui;
 namespace ui::external_app::flippertx {
 
 #define OOK_SAMPLERATE 2280000U
+#define FM_DEVIATION 60000U
+
 class FlipperPlayThread;
 class FlipperTxView : public View {
    public:

firmware/application/external/morse_practice/morsedecoder.hpp

@@ -24,8 +24,7 @@
 
 #include <cstdint>
 #include <string>
-
-#define MORSEDEC_ERROR "<ERR>"
+#include "string_format.hpp"
 
 namespace ui::external_app::morse_practice {
 
@@ -89,21 +88,28 @@ class MorseDecoder {
     };
 
     MorseDecoder() {}
-    DecodeResult handleInput(int32_t duration_ms) {
+
+    DecodeResult
+    handleInput(int32_t duration_ms) {
         DecodeResult result = {"", 0.0};
+
+        if (duration_ms < 5 && duration_ms > -5) return result;
+
         if (duration_ms > 0) {
             pulse_history_.push_back(duration_ms);
             double dah_prob = getDahProbability(duration_ms);
             current_sequence_ += (dah_prob > 0.5) ? '-' : '.';
             last_confidence_ = (dah_prob > 0.5) ? dah_prob : (1.0 - dah_prob);
             last_sequence_ = current_sequence_;
+
         } else {
             uint32_t gap_duration = -duration_ms;
             pulse_gaps_.push_back(gap_duration);
 
             if (gap_duration >= getInterCharThreshold() && !current_sequence_.empty()) {
                 result.text = lookupMorse(current_sequence_);
-                result.confidence = (result.text != MORSEDEC_ERROR) ? last_confidence_ : 0.0;
+
+                result.confidence = (result.text[0] != '{') ? last_confidence_ : 0.0;
                 if (gap_duration >= getInterWordThreshold()) {
                     result.text += " ";
                 }
@@ -116,9 +122,9 @@ class MorseDecoder {
         return result;
     }
 
-    inline double getInterElementThreshold() { return time_unit_ms_ * 2.0; }
-    inline double getInterCharThreshold() { return time_unit_ms_ * 4.0; }
-    inline double getInterWordThreshold() { return time_unit_ms_ * 7.0; }
+    inline double getInterElementThreshold() { return time_unit_ms_ * 0.8; }
+    inline double getInterCharThreshold() { return time_unit_ms_ * 2.5; }
+    inline double getInterWordThreshold() { return time_unit_ms_ * 6.0; }
 
     inline double getCurrentTimeUnit() { return time_unit_ms_; }
     inline std::string getLastSequence() { return last_sequence_; }
@@ -126,7 +132,7 @@ class MorseDecoder {
    private:
     std::string current_sequence_ = "";
     std::string last_sequence_ = "";
-    double time_unit_ms_ = 160.0;
+    double time_unit_ms_ = 119.0;
     double last_confidence_ = 0.0;
     MorseRingBuffer pulse_history_{};
     MorseRingBuffer pulse_gaps_{};
@@ -136,7 +142,7 @@ class MorseDecoder {
             if (seq == morse_table_[i].code)
                 return morse_table_[i].letter;
         }
-        return MORSEDEC_ERROR;  // not found
+        return "{" + seq + "}";  // not found
     }
 
     double getDahProbability(uint32_t duration_ms) {
@@ -298,8 +304,8 @@ class MorseDecoder {
         time_unit_ms_ = (time_unit_ms_ * (1.0 - learning_factor)) + (new_time_unit * learning_factor);
     }
 
-    size_t morse_table_size_ = 41;
-    MorseEntry morse_table_[41] = {
+    size_t morse_table_size_ = 50;
+    MorseEntry morse_table_[50] = {
         {".-", "A"},
         {"-...", "B"},
         {"-.-.", "C"},
@@ -340,7 +346,16 @@ class MorseDecoder {
         {"..--..", "?"},
         {"-.-.--", "!"},
         {"--..--", ","},
-        {"-...-", "="}};
+        {"-...-", "="},
+        {"-..-.", "/"},
+        {".--.-.", "@"},
+        {"---...", ":"},
+        {"-....-", "-"},
+        {".----.", "'"},
+        {".-..-.", "\""},
+        {"-.--.", "("},
+        {"-.--.-", ")"},
+        {".-.-.", "+"}};
 };
 
 }  // namespace ui::external_app::morse_practice

firmware/application/external/morse_practice/ui_morse_practice.cpp

@@ -12,6 +12,13 @@ MorsePracticeView::MorsePracticeView(ui::NavigationView& nav)
                   &btn_clear,
                   &console_text,
                   &field_volume});
+
+    initial_switch_config_ = get_switches_repeat_config();
+
+    SwitchesState config = initial_switch_config_;
+    config[toUType(Switch::Sel)] = false;
+    set_switches_repeat_config(config);
+
     audio::set_rate(audio::Rate::Hz_24000);
 
     btn_tt.on_select = [this](Button&) {
@@ -43,6 +50,7 @@ MorsePracticeView::MorsePracticeView(ui::NavigationView& nav)
 }
 
 MorsePracticeView::~MorsePracticeView() {
+    set_switches_repeat_config(initial_switch_config_);
     receiver_model.disable();
     baseband::shutdown();
     audio::output::stop();
@@ -98,7 +106,7 @@ void MorsePracticeView::writeCharToConsole(const std::string& ch, double confide
 
     if (ch == " ") {
         color_id = 0;
-    } else if (ch == MORSEDEC_ERROR) {
+    } else if (ch[0] == '{') {  // no match
         color_id = 0;
     } else {
         if (confidence < 0.8)

firmware/application/external/morse_practice/ui_morse_practice.hpp

@@ -47,7 +47,7 @@ class MorsePracticeView : public ui::View {
     MorsePracticeView(ui::NavigationView& nav);
     ~MorsePracticeView();
 
-    std::string title() { return "Morse P"; }
+    std::string title() const override { return "Morse Practice"; }
     void focus() override;
     void on_show() override;
 
@@ -68,7 +68,7 @@ class MorsePracticeView : public ui::View {
     ui::Text txt_last{{UI_POS_X(0), UI_POS_Y(6), UI_POS_MAXWIDTH, UI_POS_HEIGHT(1)}, ""};
     ui::Button btn_clear{{UI_POS_X(0), UI_POS_Y_BOTTOM(2), UI_POS_WIDTH(6), UI_POS_HEIGHT(1)}, "CLR"};
     ui::Console console_text{{UI_POS_X(0), UI_POS_Y(7), UI_POS_MAXWIDTH, UI_POS_HEIGHT_REMAINING(10)}};
-    AudioVolumeField field_volume{{UI_POS_X_RIGHT(2), UI_POS_X(0)}};
+    AudioVolumeField field_volume{{UI_POS_X_RIGHT(2), UI_POS_Y(0)}};
 
     uint8_t last_color_id = 255;
     uint8_t color_id = 255;
@@ -77,6 +77,7 @@ class MorsePracticeView : public ui::View {
     bool button_touch = false;
     bool button_was_selected = false;
     bool decode_timeout_calc = false;
+    SwitchesState initial_switch_config_{};
 
     MessageHandlerRegistration message_handler_framesync{
         Message::ID::DisplayFrameSync,

firmware/application/external/morse_radio/main.cpp

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2026 Pezsma
+ *
+ * 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.hpp"
+#include "ui_morse_radio.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::morse_radio {
+
+void initialize_app(NavigationView& nav) {
+    nav.push<MorseRadioView>();
+}
+
+}  // namespace ui::external_app::morse_radio
+
+extern "C" {
+
+__attribute__((section(".external_app.app_morse_radio.application_information"), used))
+application_information_t _application_information_morse_radio = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::morse_radio::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Morse",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0xFE,
+        0x7F,
+        0xFF,
+        0xFF,
+        0xBB,
+        0xD0,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0x0B,
+        0xE1,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xEB,
+        0xD0,
+        0xFF,
+        0xFF,
+        0xFE,
+        0x7F,
+        0x70,
+        0x00,
+        0x30,
+        0x00,
+        0x10,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::RX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_morse_radio */ {'P', 'M', 'R', 'S'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}

firmware/application/external/morse_radio/morsedecoder.hpp

@@ -0,0 +1,378 @@
+#ifndef __MORSEDECODER_HPP__
+#define __MORSEDECODER_HPP__
+
+/*
+ * Copyright (C) 2025 Pezsma
+ *
+ * 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 <cstdint>
+#include <string>
+#include "string_format.hpp"
+
+namespace ui::external_app::morse_radio {
+
+class MorseRingBuffer {
+   public:
+    MorseRingBuffer()
+        : head_(0), tail_(0), count_(0) {}
+
+    void push_back(const uint32_t& value) {
+        data_[head_] = value;
+        head_ = (head_ + 1) % 40;
+        if (count_ < 40) {
+            count_++;
+        } else {
+            // overwrite oldest element
+            tail_ = (tail_ + 1) % 40;
+        }
+    }
+
+    void pop_front() {
+        if (count_ > 0) {
+            tail_ = (tail_ + 1) % 40;
+            count_--;
+        }
+    }
+
+    size_t size() const { return count_; }
+    bool empty() const { return count_ == 0; }
+    const uint32_t& front() const { return data_[tail_]; }
+    // Access by index (0 = oldest)
+    uint32_t operator[](size_t idx) const {
+        return data_[(tail_ + idx) % 40];
+    }
+    // Convert to vector-like access for sorting etc.
+    void copy_to_array(uint32_t* out) const {
+        for (size_t i = 0; i < count_; ++i)
+            out[i] = (*this)[i];
+    }
+
+    void clear() {
+        head_ = 0;
+        tail_ = 0;
+        count_ = 0;
+    }
+
+   private:
+    uint32_t data_[40];
+    size_t head_;
+    size_t tail_;
+    size_t count_;
+};
+
+class MorseDecoder {
+   public:
+    struct DecodeResult {
+        std::string text = "";
+        double confidence = 0.0;
+
+        bool isValid() const {
+            return !text.empty();
+        }
+    };
+
+    struct MorseEntry {
+        std::string code;
+        std::string letter;
+    };
+
+    MorseDecoder() {}
+
+    void resetLearning() {
+        time_unit_ms_ = 119.0;
+        current_sequence_ = "";
+        last_sequence_ = "";
+        last_confidence_ = 0.0;
+        pulse_history_.clear();
+        pulse_gaps_.clear();
+    }
+
+    DecodeResult
+    handleInput(int32_t duration_ms) {
+        DecodeResult result = {"", 0.0};
+
+        if (duration_ms < 5 && duration_ms > -5) return result;
+
+        if (duration_ms > 0) {
+            pulse_history_.push_back(duration_ms);
+            double dah_prob = getDahProbability(duration_ms);
+            current_sequence_ += (dah_prob > 0.5) ? '-' : '.';
+            last_confidence_ = (dah_prob > 0.5) ? dah_prob : (1.0 - dah_prob);
+            last_sequence_ = current_sequence_;
+
+        } else {
+            uint32_t gap_duration = -duration_ms;
+            pulse_gaps_.push_back(gap_duration);
+
+            if (gap_duration >= getInterCharThreshold() && !current_sequence_.empty()) {
+                result.text = lookupMorse(current_sequence_);
+
+                result.confidence = (result.text[0] != '{') ? last_confidence_ : 0.0;
+                if (gap_duration >= getInterWordThreshold()) {
+                    result.text += " ";
+                }
+                current_sequence_ = "";
+            }
+        }
+
+        updateLearning();
+
+        return result;
+    }
+
+    inline double getInterElementThreshold() { return time_unit_ms_ * 0.8; }
+    inline double getInterCharThreshold() { return time_unit_ms_ * 2.5; }
+    inline double getInterWordThreshold() { return time_unit_ms_ * 6.0; }
+
+    inline double getCurrentTimeUnit() { return time_unit_ms_; }
+    inline std::string getLastSequence() { return last_sequence_; }
+
+   private:
+    std::string current_sequence_ = "";
+    std::string last_sequence_ = "";
+    double time_unit_ms_ = 119.0;
+    double last_confidence_ = 0.0;
+    MorseRingBuffer pulse_history_{};
+    MorseRingBuffer pulse_gaps_{};
+
+    std::string lookupMorse(const std::string& seq) {
+        for (size_t i = 0; i < morse_table_size_; i++) {
+            if (seq == morse_table_[i].code)
+                return morse_table_[i].letter;
+        }
+        return "{" + seq + "}";  // not found
+    }
+
+    double getDahProbability(uint32_t duration_ms) {
+        double start_interp = 1.5 * time_unit_ms_;
+        double end_interp = 2.5 * time_unit_ms_;
+
+        if (duration_ms <= start_interp) return 0.0;
+        if (duration_ms >= end_interp) return 1.0;
+        return ((double)(duration_ms)-start_interp) / (end_interp - start_interp);
+    }
+
+    size_t findDecisionBoundary(uint32_t* sorted_data, size_t sorted_data_size) {
+        if (sorted_data_size < 4) return 0;
+
+        size_t best_split_index = 0;
+        uint32_t max_diff = 0;
+
+        for (size_t i = 1; i < sorted_data_size; ++i) {
+            uint32_t diff = sorted_data[i] - sorted_data[i - 1];
+            if (diff > sorted_data[i - 1] * 0.5 && diff > max_diff) {
+                max_diff = diff;
+                best_split_index = i;
+            }
+        }
+        return best_split_index;
+    }
+
+    bool calculatePulseUnit(double& unit, double& confidence) {
+        if (pulse_history_.size() < 10) return false;
+        uint32_t sorted_pulses[pulse_history_.size()];
+        pulse_history_.copy_to_array(sorted_pulses);
+        sort_uint32(sorted_pulses, pulse_history_.size());
+
+        size_t split_index = findDecisionBoundary(sorted_pulses, pulse_history_.size());
+        if (split_index == 0 || split_index < 3 || (pulse_history_.size() - split_index) < 2) {
+            return false;
+        }
+        double dit_sum = sum_uint32_range(sorted_pulses, 0, split_index);
+        double dah_sum = sum_uint32_range(sorted_pulses, split_index, pulse_history_.size());
+
+        double avg_dit = dit_sum / split_index;
+        double avg_dah = dah_sum / (pulse_history_.size() - split_index);
+        if (avg_dah <= avg_dit) return false;
+
+        double ratio = avg_dah / avg_dit;
+        if (ratio > 1.5 && ratio < 5.0) {
+            unit = avg_dit;
+            double tmpabs = ratio - 3.0;
+            if (tmpabs < 0) tmpabs *= -1;
+            tmpabs /= 3.0;
+            tmpabs = 1.0 - tmpabs;
+            if (tmpabs < 0) tmpabs = 0;
+            confidence = tmpabs;  // 0..1
+            return true;
+        }
+
+        return false;
+    }
+
+    bool calculateGapUnit(double& unit, double& confidence) {
+        if (pulse_gaps_.size() < 10) return false;
+        double threshold = getInterElementThreshold();
+        double valid_gaps[pulse_gaps_.size()];
+        size_t valid_count = 0;
+        for (size_t i = 0; i < pulse_gaps_.size(); i++) {
+            double gap = pulse_gaps_[i];
+            if (gap <= threshold) {
+                valid_gaps[valid_count++] = gap;
+            }
+        }
+        if (valid_count < 2) {
+            return false;
+        }
+        double sum = sum_double_range(valid_gaps, 0, valid_count);
+        size_t count_to_average = valid_count;
+
+        if (count_to_average > 0) {
+            unit = sum / count_to_average;
+            confidence = 0.8;
+            return true;
+        }
+
+        return false;
+    }
+
+    double sum_uint32_range(const uint32_t* data, size_t start, size_t end) {
+        double sum = 0.0;
+        for (size_t i = start; i < end; i++) {
+            sum += data[i];
+        }
+        return sum;
+    }
+    double sum_double_range(const double* data, size_t start, size_t end) {
+        double sum = 0.0;
+        for (size_t i = start; i < end; i++) {
+            sum += data[i];
+        }
+        return sum;
+    }
+
+    void sort_uint32(uint32_t* data, size_t size) {
+        if (size < 2)
+            return;
+
+        for (size_t i = 1; i < size; i++) {
+            uint32_t key = data[i];
+            size_t j = i;
+
+            while (j > 0 && data[j - 1] > key) {
+                data[j] = data[j - 1];
+                j--;
+            }
+
+            data[j] = key;
+        }
+    }
+
+    double clamp_double(double value, double min_val, double max_val) {
+        if (value < min_val)
+            return min_val;
+        else if (value > max_val)
+            return max_val;
+        else
+            return value;
+    }
+
+    void updateLearning() {
+        double pulse_unit = -1.0, pulse_confidence = 0.0;
+        double gap_unit = -1.0, gap_confidence = 0.0;
+
+        bool pulse_success = calculatePulseUnit(pulse_unit, pulse_confidence);
+        bool gap_success = calculateGapUnit(gap_unit, gap_confidence);
+
+        double new_time_unit = -1.0;
+        if (pulse_success && pulse_confidence > 0.5) {
+            new_time_unit = pulse_unit;
+        } else if (pulse_success && gap_success) {
+            gap_confidence = 0.2;
+            double total_confidence = pulse_confidence + gap_confidence;
+            new_time_unit = (pulse_unit * pulse_confidence + gap_unit * gap_confidence) / total_confidence;
+        } else if (gap_success) {
+            new_time_unit = gap_unit;
+        } else {
+            return;
+        }
+
+        double max_change = time_unit_ms_ * 0.25;
+        new_time_unit = clamp_double(new_time_unit, time_unit_ms_ - max_change, time_unit_ms_ + max_change);
+        double DEFAULT_TIME_UNIT = 160.0;
+        double BASE_LEARNING_RATE = 0.05;
+        double MAX_LEARNING_RATE = 0.25;
+        double tudeltaabs = new_time_unit - DEFAULT_TIME_UNIT;
+        if (tudeltaabs < 0) tudeltaabs *= -1;
+        double deviation_from_default = tudeltaabs / DEFAULT_TIME_UNIT;
+        double tpp = deviation_from_default * 2.0;
+        if (tpp > 1) tpp = 1;
+        double learning_factor = BASE_LEARNING_RATE + (MAX_LEARNING_RATE - BASE_LEARNING_RATE) * tpp;
+
+        time_unit_ms_ = (time_unit_ms_ * (1.0 - learning_factor)) + (new_time_unit * learning_factor);
+    }
+
+    size_t morse_table_size_ = 50;
+    MorseEntry morse_table_[50] = {
+        {".-", "A"},
+        {"-...", "B"},
+        {"-.-.", "C"},
+        {"-..", "D"},
+        {".", "E"},
+        {"..-.", "F"},
+        {"--.", "G"},
+        {"....", "H"},
+        {"..", "I"},
+        {".---", "J"},
+        {"-.-", "K"},
+        {".-..", "L"},
+        {"--", "M"},
+        {"-.", "N"},
+        {"---", "O"},
+        {".--.", "P"},
+        {"--.-", "Q"},
+        {".-.", "R"},
+        {"...", "S"},
+        {"-", "T"},
+        {"..-", "U"},
+        {"...-", "V"},
+        {".--", "W"},
+        {"-..-", "X"},
+        {"-.--", "Y"},
+        {"--..", "Z"},
+        {".----", "1"},
+        {"..---", "2"},
+        {"...--", "3"},
+        {"....-", "4"},
+        {".....", "5"},
+        {"-....", "6"},
+        {"--...", "7"},
+        {"---..", "8"},
+        {"----.", "9"},
+        {"-----", "0"},
+        {".-.-.-", "."},
+        {"..--..", "?"},
+        {"-.-.--", "!"},
+        {"--..--", ","},
+        {"-...-", "="},
+        {"-..-.", "/"},
+        {".--.-.", "@"},
+        {"---...", ":"},
+        {"-....-", "-"},
+        {".----.", "'"},
+        {".-..-.", "\""},
+        {"-.--.", "("},
+        {"-.--.-", ")"},
+        {".-.-.", "+"}};
+};
+
+}  // namespace ui::external_app::morse_radio
+
+#endif  // __MORSEDECODER_HPP__

firmware/application/external/morse_radio/ui_morse_radio.cpp

@@ -0,0 +1,282 @@
+#include "ui_morse_radio.hpp"
+#include "portapack_persistent_memory.hpp"
+
+using namespace portapack;
+
+namespace ui::external_app::morse_radio {
+
+MorseRadioView::MorseRadioView(ui::NavigationView& nav)
+    : nav_(nav) {
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    add_children({&rssi,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &field_volume,
+                  &field_frequency,
+                  &txt_last,
+                  &txt_speed,
+                  &txt_freq,
+                  &txt_clip,
+                  &options_mode,
+                  &btn_clear,
+                  &console_text,
+                  &labels,
+                  &chk_log,
+                  &field_squelch});
+    field_frequency.set_step(100);
+
+    btn_clear.on_select = [this](Button&) {
+        console_text.clear(true);
+        txt_last.set("");
+        time_stamp = false;
+        if (logger && save_log)
+            logger->init_daily_log(logs_dir);
+    };
+
+    field_squelch.on_change = [this](int32_t v) {
+        receiver_model.set_squelch_level(v);
+    };
+
+    options_mode.on_change = [this](size_t, int32_t mode) {
+        audio::output::stop();
+        receiver_model.disable();
+        morse_decoder_.resetLearning();
+        if (mode == MORSE_NFM) {
+            receiver_model.set_am_configuration(4);
+            receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+            field_squelch.set_style(Theme::getInstance()->option_active);
+            field_squelch.set_focusable(true);
+            field_squelch.set_value(receiver_model.squelch_level());
+            audio::set_rate(audio::Rate::Hz_24000);
+        } else {
+            audio::set_rate(audio::Rate::Hz_12000);
+            receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);
+            if (mode == MORSE_AM_CW || mode == MORSE_AM_DSB)
+                receiver_model.set_am_configuration(7);
+            else if (mode == MORSE_AM_USB)
+                receiver_model.set_am_configuration(9);
+            else  // LSB
+                receiver_model.set_am_configuration(10);
+            field_squelch.set_style(Theme::getInstance()->fg_dark);
+            field_squelch.set_focusable(false);
+        }
+        baseband::set_moreserx_config(mode);
+        saved_mode = mode;
+
+        audio::output::start();
+        receiver_model.set_headphone_volume(receiver_model.headphone_volume());  // WM8731 hack.
+
+        receiver_model.set_sampling_rate(3072000);
+        receiver_model.set_baseband_bandwidth(1750000);
+        receiver_model.enable();
+    };
+    options_mode.set_selected_index(saved_mode);
+
+    logger = std::make_unique<MorseLogger>();
+    chk_log.on_select = [this](Checkbox&, bool save) {
+        save_log = save;
+        if (logger && save_log)
+            logger->init_daily_log(logs_dir);
+    };
+}
+
+void MorseLogger::init_daily_log(const std::filesystem::path& log_dir) {
+    auto now = rtc_time::now();
+    std::string pattern = "morse_";
+    uint16_t y = now.year();
+    pattern += (char)('0' + (y / 1000) % 10);
+    pattern += (char)('0' + (y / 100) % 10);
+    pattern += (char)('0' + (y / 10) % 10);
+    pattern += (char)('0' + (y % 10));
+
+    uint8_t m = now.month();
+    pattern += (char)('0' + (m / 10) % 10);
+    pattern += (char)('0' + (m % 10));
+
+    uint8_t d = now.day();
+    pattern += (char)('0' + (d / 10) % 10);
+    pattern += (char)('0' + (d % 10));
+
+    pattern += "_???.TXT";
+
+    auto full_pattern_path = log_dir / pattern;
+    auto final_path = next_filename_matching_pattern(full_pattern_path);
+    if (!final_path.empty()) {
+        this->append(final_path);
+    }
+}
+
+void MorseLogger::radio_set_log(const std::string& morse_mode) {
+    int64_t freq = receiver_model.target_frequency();
+    std::string header = "Freq:" + to_string_rounded_freq(freq, 4);
+    header += "MHz, ";
+    header += "RX MODE:" + morse_mode;
+    header += "\r\nMessage:";
+    log_file.write_raw(header);
+}
+
+bool MorseLogger::on_packet(const std::string& content, bool time, const std::string& morse_mode) {
+    if (!time) {
+        log_file.write_raw_no_newline("\r\n\r\n");
+        auto timestamp = to_string_datetime(rtc_time::now(), YMDHMS);
+        log_file.write_raw("[" + timestamp + "] ");
+        radio_set_log(morse_mode);
+        char_count = 0;
+        time = true;
+    }
+
+    if (content.empty()) return time;
+    std::string s;
+    for (char c : content) {
+        s = c;
+        if ((char_count >= 35 && c == ' ') || (char_count >= 47)) {
+            log_file.write_raw_no_newline("\r\n");
+
+            if (c != ' ') {
+                log_file.write_raw_no_newline(s);
+                char_count = 1;
+            } else {
+                char_count = 0;
+            }
+        } else {
+            log_file.write_raw_no_newline(s);
+            char_count++;
+        }
+    }
+
+    return time;
+}
+
+MorseRadioView::~MorseRadioView() {
+    receiver_model.disable();
+    baseband::shutdown();
+    audio::output::stop();
+}
+
+void MorseRadioView::focus() {
+    field_frequency.focus();
+    txt_clip.set_style(Theme::getInstance()->fg_red);
+    txt_clip.hidden(true);
+}
+
+void MorseRadioView::check_for_timeout() {
+    uint64_t now = chTimeNow();
+    if (last_activity_time == 0) {
+        last_activity_time = now;
+        return;
+    }
+    uint64_t quiet_duration = now - last_activity_time;
+    if (quiet_duration >= 60000) {
+        morse_decoder_.resetLearning();
+        time_stamp = false;
+        last_activity_time = now;
+    }
+}
+
+int32_t MorseRadioView::ProcessSignal(int32_t sig_time_us) {
+    int8_t sign = (sig_time_us > 0) ? 1 : ((sig_time_us < 0) ? -1 : 0);
+    int32_t result = 0;
+
+    if (last_sign_ == 0) {
+        last_sign_ = sign;
+        accumulator_us_ = sig_time_us;
+        long_pause_sent_ = false;
+        return 0;
+    }
+    if (sign == last_sign_) {
+        accumulator_us_ += sig_time_us;
+
+        if (sign < 0) {
+            int32_t threshold_us = morse_decoder_.getInterWordThreshold() * 1000;
+            if (!long_pause_sent_ && accumulator_us_ <= -threshold_us) {
+                result = accumulator_us_ / 1000;
+                long_pause_sent_ = true;
+            }
+        }
+    } else {
+        // state change
+        if (!long_pause_sent_) {
+            result = accumulator_us_ / 1000;
+        } else {
+            result = 0;
+        }
+        accumulator_us_ = sig_time_us;
+        last_sign_ = sign;
+        long_pause_sent_ = false;
+    }
+    return result;
+}
+
+void MorseRadioView::on_data(const MorseRXDataMessage* message) {
+    int32_t r;
+
+    txt_clip.hidden(!message->clipped);
+
+    for (uint8_t i = 0; i <= message->state_cnt; ++i) {
+        r = ProcessSignal(message->state_durations[i]);
+        auto result = morse_decoder_.handleInput((r != 0) ? r : 0);
+        if (result.isValid()) {
+            last_activity_time = chTimeNow();  // start reset timer on valid input
+            writeCharToConsole(result.text, result.confidence);
+            if (logger && save_log) {
+                time_stamp = logger->on_packet(result.text, time_stamp, options_mode.selected_index_name());
+            }
+            float dah_time = morse_decoder_.getCurrentTimeUnit() * 3.0f;
+            if (dah_time > 0) {
+                uint16_t wpm = (uint16_t)(3600.0f / (dah_time + 18.0f) + 0.5f);
+                txt_speed.set(to_string_dec_uint(wpm));
+            }
+        }
+    }
+}
+
+void MorseRadioView::on_freq(const MorseRXfreqMessage* message) {
+    std::string ret = " ";
+    uint32_t freq = message->measured_frequency;
+    if (freq < 301) {
+        ret = "<";
+        freq = 300;
+    }
+    if (freq > 2299) {
+        freq = 2300;
+        ret = ">";
+    }
+    if (freq < 400 || freq > 1400)
+        txt_freq.set_style(Theme::getInstance()->fg_red);
+    else if (freq <= 580 || freq >= 1220)
+        txt_freq.set_style(Theme::getInstance()->fg_yellow);
+    else
+        txt_freq.set_style(Theme::getInstance()->fg_green);
+    ret += to_string_dec_uint(freq);
+    txt_freq.set(ret);
+}
+
+void MorseRadioView::writeCharToConsole(const std::string& ch, double confidence) {
+    if (ch.empty()) {
+        return;
+    }
+
+    txt_last.set(morse_decoder_.getLastSequence().c_str());
+
+    last_color_id = color_id;
+    std::string color = "";
+
+    if (ch == " ") {
+        color_id = 0;
+    } else if (ch[0] == '{') {  // no match
+        color_id = 0;
+    } else {
+        if (confidence < 0.8)
+            color_id = 1;
+        else if (confidence < 0.9)
+            color_id = 2;
+        else
+            color_id = 3;
+    }
+    color = arr_color[color_id];
+    last_color_id = color_id;
+    console_text.write(color + ch);
+}
+
+}  // namespace ui::external_app::morse_radio

firmware/application/external/morse_radio/ui_morse_radio.hpp

@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2026 Pezsma
+ *
+ * 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 __MORSE_RADIO_H__
+#define __MORSE_RADIO_H__
+
+#include "ui.hpp"
+#include "ui_widget.hpp"
+#include "ui_navigation.hpp"
+#include "string_format.hpp"
+#include "external_app.hpp"
+#include "ui_freq_field.hpp"
+#include "radio_state.hpp"
+#include "portapack.hpp"
+#include "message.hpp"
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "receiver_model.hpp"
+#include "tone_key.hpp"
+#include "log_file.hpp"
+#include "file_path.hpp"
+#include "file.hpp"
+#include "rtc_time.hpp"
+#include "morsedecoder.hpp"
+
+#include <cstdint>
+
+namespace ui::external_app::morse_radio {
+
+class MorseRadioView;
+
+class MorseLogger {
+   public:
+    Optional<File::Error> append(const std::filesystem::path& filename) {
+        return log_file.append(filename);
+    }
+
+    void init_daily_log(const std::filesystem::path& log_dir);
+    bool on_packet(const std::string& content, bool time, const std::string& morse_mode);
+    void radio_set_log(const std::string& morse_mode);
+
+   private:
+    LogFile log_file{};
+    uint8_t char_count{0};  // log file line break
+};
+
+class MorseRadioView : public ui::View {
+   public:
+    MorseRadioView(ui::NavigationView& nav);
+    ~MorseRadioView();
+    std::string title() const override {
+        return "Morse";
+    }
+    void focus() override;
+
+   private:
+    void writeCharToConsole(const std::string& ch, double confidence);
+    void on_data(const MorseRXDataMessage* message);
+    void on_freq(const MorseRXfreqMessage* message);
+    void on_message(const Message* const p);
+    void check_for_timeout();
+    int32_t ProcessSignal(int32_t sig_time_us);
+    ui::NavigationView& nav_;
+    MorseDecoder morse_decoder_{};
+    RxRadioState radio_state_{};
+    std::unique_ptr<MorseLogger> logger{};
+
+    enum morse_modes : uint8_t {
+        MORSE_AM_CW = 0,
+        MORSE_NFM,
+        MORSE_AM_DSB,
+        MORSE_AM_USB,
+        MORSE_AM_LSB,
+    };
+    uint8_t saved_mode = MORSE_AM_CW;
+
+    app_settings::SettingsManager settings_{
+        "rx_morse_radio",
+        app_settings::Mode::RX,
+        {
+            {"cwmode"sv, &saved_mode},
+        }};
+
+    RxFrequencyField field_frequency{
+        {UI_POS_X(0), UI_POS_Y(0)},
+        nav_};
+    RFAmpField field_rf_amp{
+        {UI_POS_X(13), UI_POS_Y(0)}};
+    LNAGainField field_lna{
+        {UI_POS_X(15), UI_POS_Y(0)}};
+    VGAGainField field_vga{
+        {UI_POS_X(18), UI_POS_Y(0)}};
+    RSSI rssi{
+        {UI_POS_X(21), UI_POS_Y(0), UI_POS_WIDTH_REMAINING(24), 4}};
+
+    AudioVolumeField field_volume{
+        {UI_POS_X_RIGHT(2), UI_POS_Y(0)}};
+
+    NumberField field_squelch{
+        {UI_POS_X(10), UI_POS_Y(1)},
+        2,
+        {0, 99},
+        1,
+        ' ',
+    };
+    ui::Text txt_speed{{UI_POS_X(23), UI_POS_Y(1), UI_POS_WIDTH(3), UI_POS_HEIGHT(1)}, "??"};
+    ui::Text txt_last{{UI_POS_X(12), UI_POS_Y(4), UI_POS_WIDTH_REMAINING(12), UI_POS_HEIGHT(1)}, ""};
+    ui::Text txt_freq{{UI_POS_X(21), UI_POS_Y(2), UI_POS_WIDTH(5), UI_POS_HEIGHT(1)}, "??"};
+    ui::Text txt_clip{{UI_POS_X(15), UI_POS_Y(3), UI_POS_WIDTH(5), UI_POS_HEIGHT(1)}, "clipping"};
+    ui::Console console_text{{UI_POS_X(0), UI_POS_Y(5), UI_POS_MAXWIDTH, UI_POS_HEIGHT_REMAINING(7)}};
+    ui::Labels labels{
+        {{UI_POS_X(0), UI_POS_Y(1)}, "Squelch:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(15), UI_POS_Y(1)}, "Speed:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(26), UI_POS_Y(1)}, "wpm", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(4)}, "Last seq.:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(15), UI_POS_Y(2)}, "Tone:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(27), UI_POS_Y(2)}, "Hz", Theme::getInstance()->fg_light->foreground}};
+
+    ui::OptionsField options_mode{
+        {UI_POS_X(8), UI_POS_Y(2) + 4},  // +4 to align with 'Log' checkbox text
+        6,
+        {
+            {"AM/CW", MORSE_AM_CW},
+            {"NFM", MORSE_NFM},
+            {"AM/DSB", MORSE_AM_DSB},
+            {"AM/USB", MORSE_AM_USB},
+            {"AM/LSB", MORSE_AM_LSB},
+        }};
+
+    Checkbox chk_log{{UI_POS_X(0), UI_POS_Y(2)}, 12, "Log", false};
+    ui::Button btn_clear{{UI_POS_X(0), UI_POS_Y_BOTTOM(2), UI_POS_WIDTH(6), UI_POS_HEIGHT(1)}, "CLR"};
+
+    std::string arr_color[4] = {STR_COLOR_WHITE, STR_COLOR_RED, STR_COLOR_YELLOW, STR_COLOR_GREEN};
+
+    bool long_pause_sent_{false};
+    bool save_log{false};
+    bool reset_triggered_{false};
+    bool time_stamp{false};
+    uint8_t last_color_id{255};
+    uint8_t color_id{255};
+    int8_t last_sign_{0};
+    uint8_t space_timer{0};
+    int32_t accumulator_us_{0};
+    uint64_t last_activity_time{0};
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::MorseRXData,
+        [this](Message* const p) {
+            const auto message = static_cast<const MorseRXDataMessage*>(p);
+            this->on_data(message);
+        }};
+
+    MessageHandlerRegistration message_handler_freq{
+        Message::ID::MorseRXfreq,
+        [this](Message* const p) {
+            const auto message = static_cast<const MorseRXfreqMessage*>(p);
+            this->on_freq(message);
+        }};
+
+    MessageHandlerRegistration message_handler_framesync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const p) {
+            (void)p;
+            this->check_for_timeout();
+        }};
+};
+
+}  // namespace ui::external_app::morse_radio
+
+#endif  // __MORSE_RADIO_H__

firmware/application/external/morseradiotx/main.cpp

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2026 Pezsma
+ *
+ * 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.hpp"
+#include "ui_morse_radiotx.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::morseradiotx {
+
+void initialize_app(NavigationView& nav) {
+    nav.push<MorseRadiotxView>();
+}
+
+}  // namespace ui::external_app::morseradiotx
+
+extern "C" {
+
+__attribute__((section(".external_app.app_morseradiotx.application_information"), used))
+application_information_t _application_information_morseradiotx = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::morseradiotx::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Morse TX",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0xFE,
+        0x7F,
+        0xFF,
+        0xFF,
+        0xBB,
+        0xD0,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0x0B,
+        0xE1,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xEB,
+        0xD0,
+        0xFF,
+        0xFF,
+        0xFE,
+        0x7F,
+        0x70,
+        0x00,
+        0x30,
+        0x00,
+        0x10,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::TX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_none */ {'P', 'M', 'R', 'T'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+
+}  // extern "C"

firmware/application/external/morseradiotx/morsedecoder.hpp

@@ -0,0 +1,389 @@
+#ifndef __MORSEDECODER_HPP__
+#define __MORSEDECODER_HPP__
+
+/*
+ * Copyright (C) 2025 Pezsma
+ *
+ * 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 <cstdint>
+#include <string>
+#include "string_format.hpp"
+
+namespace ui::external_app::morseradiotx {
+
+class MorseRingBuffer {
+   public:
+    MorseRingBuffer()
+        : head_(0), tail_(0), count_(0) {}
+
+    void push_back(const uint32_t& value) {
+        data_[head_] = value;
+        head_ = (head_ + 1) % 40;
+        if (count_ < 40) {
+            count_++;
+        } else {
+            // overwrite oldest element
+            tail_ = (tail_ + 1) % 40;
+        }
+    }
+
+    void pop_front() {
+        if (count_ > 0) {
+            tail_ = (tail_ + 1) % 40;
+            count_--;
+        }
+    }
+
+    size_t size() const { return count_; }
+    bool empty() const { return count_ == 0; }
+    const uint32_t& front() const { return data_[tail_]; }
+    // Access by index (0 = oldest)
+    uint32_t operator[](size_t idx) const {
+        return data_[(tail_ + idx) % 40];
+    }
+    // Convert to vector-like access for sorting etc.
+    void copy_to_array(uint32_t* out) const {
+        for (size_t i = 0; i < count_; ++i)
+            out[i] = (*this)[i];
+    }
+
+    void clear() {
+        head_ = 0;
+        tail_ = 0;
+        count_ = 0;
+    }
+
+   private:
+    uint32_t data_[40];
+    size_t head_;
+    size_t tail_;
+    size_t count_;
+};
+
+class MorseDecoder {
+   public:
+    struct DecodeResult {
+        std::string text = "";
+        double confidence = 0.0;
+
+        bool isValid() const {
+            return !text.empty();
+        }
+    };
+
+    struct MorseEntry {
+        std::string code;
+        std::string letter;
+    };
+
+    MorseDecoder() {}
+
+    void resetLearning() {
+        time_unit_ms_ = 119.0;
+        current_sequence_ = "";
+        last_sequence_ = "";
+        last_confidence_ = 0.0;
+        pulse_history_.clear();
+        pulse_gaps_.clear();
+    }
+
+    const char* get_morse_pattern(char c) {
+        char upper_c = (c >= 'a' && c <= 'z') ? c - 32 : c;
+
+        for (size_t i = 0; i < morse_table_size_; ++i) {
+            if (morse_table_[i].letter[0] == upper_c) {
+                return morse_table_[i].code.c_str();
+            }
+        }
+        return nullptr;
+    }
+
+    DecodeResult
+    handleInput(int32_t duration_ms) {
+        DecodeResult result = {"", 0.0};
+
+        if (duration_ms < 5 && duration_ms > -5) return result;
+
+        if (duration_ms > 0) {
+            pulse_history_.push_back(duration_ms);
+            double dah_prob = getDahProbability(duration_ms);
+            current_sequence_ += (dah_prob > 0.5) ? '-' : '.';
+            last_confidence_ = (dah_prob > 0.5) ? dah_prob : (1.0 - dah_prob);
+            last_sequence_ = current_sequence_;
+
+        } else {
+            uint32_t gap_duration = -duration_ms;
+            pulse_gaps_.push_back(gap_duration);
+
+            if (gap_duration >= getInterCharThreshold() && !current_sequence_.empty()) {
+                result.text = lookupMorse(current_sequence_);
+
+                result.confidence = (result.text[0] != '{') ? last_confidence_ : 0.0;
+                if (gap_duration >= getInterWordThreshold()) {
+                    result.text += " ";
+                }
+                current_sequence_ = "";
+            }
+        }
+
+        updateLearning();
+
+        return result;
+    }
+
+    inline double getInterElementThreshold() { return time_unit_ms_ * 0.8; }
+    inline double getInterCharThreshold() { return time_unit_ms_ * 2.5; }
+    inline double getInterWordThreshold() { return time_unit_ms_ * 6.0; }
+
+    inline double getCurrentTimeUnit() { return time_unit_ms_; }
+    inline std::string getLastSequence() { return last_sequence_; }
+
+   private:
+    std::string current_sequence_ = "";
+    std::string last_sequence_ = "";
+    double time_unit_ms_ = 119.0;
+    double last_confidence_ = 0.0;
+    MorseRingBuffer pulse_history_{};
+    MorseRingBuffer pulse_gaps_{};
+
+    std::string lookupMorse(const std::string& seq) {
+        for (size_t i = 0; i < morse_table_size_; i++) {
+            if (seq == morse_table_[i].code)
+                return morse_table_[i].letter;
+        }
+        return "{" + seq + "}";  // not found
+    }
+
+    double getDahProbability(uint32_t duration_ms) {
+        double start_interp = 1.5 * time_unit_ms_;
+        double end_interp = 2.5 * time_unit_ms_;
+
+        if (duration_ms <= start_interp) return 0.0;
+        if (duration_ms >= end_interp) return 1.0;
+        return ((double)(duration_ms)-start_interp) / (end_interp - start_interp);
+    }
+
+    size_t findDecisionBoundary(uint32_t* sorted_data, size_t sorted_data_size) {
+        if (sorted_data_size < 4) return 0;
+
+        size_t best_split_index = 0;
+        uint32_t max_diff = 0;
+
+        for (size_t i = 1; i < sorted_data_size; ++i) {
+            uint32_t diff = sorted_data[i] - sorted_data[i - 1];
+            if (diff > sorted_data[i - 1] * 0.5 && diff > max_diff) {
+                max_diff = diff;
+                best_split_index = i;
+            }
+        }
+        return best_split_index;
+    }
+
+    bool calculatePulseUnit(double& unit, double& confidence) {
+        if (pulse_history_.size() < 10) return false;
+        uint32_t sorted_pulses[pulse_history_.size()];
+        pulse_history_.copy_to_array(sorted_pulses);
+        sort_uint32(sorted_pulses, pulse_history_.size());
+
+        size_t split_index = findDecisionBoundary(sorted_pulses, pulse_history_.size());
+        if (split_index == 0 || split_index < 3 || (pulse_history_.size() - split_index) < 2) {
+            return false;
+        }
+        double dit_sum = sum_uint32_range(sorted_pulses, 0, split_index);
+        double dah_sum = sum_uint32_range(sorted_pulses, split_index, pulse_history_.size());
+
+        double avg_dit = dit_sum / split_index;
+        double avg_dah = dah_sum / (pulse_history_.size() - split_index);
+        if (avg_dah <= avg_dit) return false;
+
+        double ratio = avg_dah / avg_dit;
+        if (ratio > 1.5 && ratio < 5.0) {
+            unit = avg_dit;
+            double tmpabs = ratio - 3.0;
+            if (tmpabs < 0) tmpabs *= -1;
+            tmpabs /= 3.0;
+            tmpabs = 1.0 - tmpabs;
+            if (tmpabs < 0) tmpabs = 0;
+            confidence = tmpabs;  // 0..1
+            return true;
+        }
+
+        return false;
+    }
+
+    bool calculateGapUnit(double& unit, double& confidence) {
+        if (pulse_gaps_.size() < 10) return false;
+        double threshold = getInterElementThreshold();
+        double valid_gaps[pulse_gaps_.size()];
+        size_t valid_count = 0;
+        for (size_t i = 0; i < pulse_gaps_.size(); i++) {
+            double gap = pulse_gaps_[i];
+            if (gap <= threshold) {
+                valid_gaps[valid_count++] = gap;
+            }
+        }
+        if (valid_count < 2) {
+            return false;
+        }
+        double sum = sum_double_range(valid_gaps, 0, valid_count);
+        size_t count_to_average = valid_count;
+
+        if (count_to_average > 0) {
+            unit = sum / count_to_average;
+            confidence = 0.8;
+            return true;
+        }
+
+        return false;
+    }
+
+    double sum_uint32_range(const uint32_t* data, size_t start, size_t end) {
+        double sum = 0.0;
+        for (size_t i = start; i < end; i++) {
+            sum += data[i];
+        }
+        return sum;
+    }
+    double sum_double_range(const double* data, size_t start, size_t end) {
+        double sum = 0.0;
+        for (size_t i = start; i < end; i++) {
+            sum += data[i];
+        }
+        return sum;
+    }
+
+    void sort_uint32(uint32_t* data, size_t size) {
+        if (size < 2)
+            return;
+
+        for (size_t i = 1; i < size; i++) {
+            uint32_t key = data[i];
+            size_t j = i;
+
+            while (j > 0 && data[j - 1] > key) {
+                data[j] = data[j - 1];
+                j--;
+            }
+
+            data[j] = key;
+        }
+    }
+
+    double clamp_double(double value, double min_val, double max_val) {
+        if (value < min_val)
+            return min_val;
+        else if (value > max_val)
+            return max_val;
+        else
+            return value;
+    }
+
+    void updateLearning() {
+        double pulse_unit = -1.0, pulse_confidence = 0.0;
+        double gap_unit = -1.0, gap_confidence = 0.0;
+
+        bool pulse_success = calculatePulseUnit(pulse_unit, pulse_confidence);
+        bool gap_success = calculateGapUnit(gap_unit, gap_confidence);
+
+        double new_time_unit = -1.0;
+        if (pulse_success && pulse_confidence > 0.5) {
+            new_time_unit = pulse_unit;
+        } else if (pulse_success && gap_success) {
+            gap_confidence = 0.2;
+            double total_confidence = pulse_confidence + gap_confidence;
+            new_time_unit = (pulse_unit * pulse_confidence + gap_unit * gap_confidence) / total_confidence;
+        } else if (gap_success) {
+            new_time_unit = gap_unit;
+        } else {
+            return;
+        }
+
+        double max_change = time_unit_ms_ * 0.25;
+        new_time_unit = clamp_double(new_time_unit, time_unit_ms_ - max_change, time_unit_ms_ + max_change);
+        double DEFAULT_TIME_UNIT = 160.0;
+        double BASE_LEARNING_RATE = 0.05;
+        double MAX_LEARNING_RATE = 0.25;
+        double tudeltaabs = new_time_unit - DEFAULT_TIME_UNIT;
+        if (tudeltaabs < 0) tudeltaabs *= -1;
+        double deviation_from_default = tudeltaabs / DEFAULT_TIME_UNIT;
+        double tpp = deviation_from_default * 2.0;
+        if (tpp > 1) tpp = 1;
+        double learning_factor = BASE_LEARNING_RATE + (MAX_LEARNING_RATE - BASE_LEARNING_RATE) * tpp;
+
+        time_unit_ms_ = (time_unit_ms_ * (1.0 - learning_factor)) + (new_time_unit * learning_factor);
+    }
+
+    size_t morse_table_size_ = 50;
+    MorseEntry morse_table_[50] = {
+        {".-", "A"},
+        {"-...", "B"},
+        {"-.-.", "C"},
+        {"-..", "D"},
+        {".", "E"},
+        {"..-.", "F"},
+        {"--.", "G"},
+        {"....", "H"},
+        {"..", "I"},
+        {".---", "J"},
+        {"-.-", "K"},
+        {".-..", "L"},
+        {"--", "M"},
+        {"-.", "N"},
+        {"---", "O"},
+        {".--.", "P"},
+        {"--.-", "Q"},
+        {".-.", "R"},
+        {"...", "S"},
+        {"-", "T"},
+        {"..-", "U"},
+        {"...-", "V"},
+        {".--", "W"},
+        {"-..-", "X"},
+        {"-.--", "Y"},
+        {"--..", "Z"},
+        {".----", "1"},
+        {"..---", "2"},
+        {"...--", "3"},
+        {"....-", "4"},
+        {".....", "5"},
+        {"-....", "6"},
+        {"--...", "7"},
+        {"---..", "8"},
+        {"----.", "9"},
+        {"-----", "0"},
+        {".-.-.-", "."},
+        {"..--..", "?"},
+        {"-.-.--", "!"},
+        {"--..--", ","},
+        {"-...-", "="},
+        {"-..-.", "/"},
+        {".--.-.", "@"},
+        {"---...", ":"},
+        {"-....-", "-"},
+        {".----.", "'"},
+        {".-..-.", "\""},
+        {"-.--.", "("},
+        {"-.--.-", ")"},
+        {".-.-.", "+"}};
+};
+
+}  // namespace ui::external_app::morseradiotx
+
+#endif  // __MORSEDECODER_HPP__

firmware/application/external/morseradiotx/ui_morse_radiotx.cpp

@@ -0,0 +1,437 @@
+#include "ui_morse_radiotx.hpp"
+
+using namespace portapack;
+
+namespace ui::external_app::morseradiotx {
+
+static msg_t tx_thread_fn(void* arg) {
+    auto view = reinterpret_cast<MorseRadiotxView*>(arg);
+    chRegSetThreadName("morse_tx_thread");
+    view->transmit_morse_message();
+    return 0;
+}
+
+MorseRadiotxView::MorseRadiotxView(ui::NavigationView& nav)
+    : current_timings(calculate_morse_timings(20)),
+      nav_(nav) {
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    add_children({&tx_view,
+                  &field_volume,
+                  &labels,
+                  &options_mode,
+                  &tone_,
+                  &wpm_,
+                  &txt_msg,
+                  &btn_message,
+                  &btn_calls,
+                  &chk_trans,
+                  &bandwidth,
+                  &chk_callsgn,
+                  &txt_last,
+                  &console_text,
+                  &btn_clear,
+                  &btn_ptt});
+
+    initial_switch_config_ = get_switches_repeat_config();
+
+    SwitchesState config = initial_switch_config_;
+    config[toUType(Switch::Sel)] = false;
+    set_switches_repeat_config(config);
+
+    audio::set_rate(audio::Rate::Hz_24000);
+
+    btn_clear.on_select = [this](Button&) {
+        console_text.clear(true);
+        txt_last.set("");
+    };
+
+    options_mode.on_change = [this](size_t, int32_t value) {
+        current_mode = (uint8_t)value;
+        baseband::set_morsetx_config(current_mode, tone, band);
+        ui_toggle();
+    };
+
+    tone_.on_change = [this](int32_t v) {
+        tone = static_cast<uint32_t>(v);
+        baseband::set_morsetx_config(current_mode, tone, band);
+    };
+
+    wpm_.on_change = [this](int16_t v) {
+        wpm = v;
+        current_timings = calculate_morse_timings(wpm);
+    };
+
+    bandwidth.on_change = [this](float v) {
+        band = v;
+        baseband::set_morsetx_config(current_mode, tone, band);
+    };
+
+    options_mode.set_selected_index(current_mode, true);
+    tone_.set_value(tone, true);
+    wpm_.set_value(wpm, true);
+    bandwidth.set_value(band, true);
+
+    btn_ptt.on_select = [this](Button&) {
+        if (button_touch) {
+            button_touch = false;
+            return;
+        }
+        button_was_selected = true;
+        onPress();
+    };
+
+    btn_ptt.on_touch_press = [this](Button&) {
+        button_touch = true;
+        button_was_selected = false;
+        onPress();
+    };
+    btn_ptt.on_touch_release = [this](Button&) {
+        if (chk_trans.value() && transmit) {
+            button_touch = true;
+            button_was_selected = false;
+            onRelease();
+        }
+    };
+
+    btn_message.on_select = [this, &nav](Button&) {
+        if (!transmit)
+            text_prompt(nav, msg_buffer, 27, ENTER_KEYBOARD_MODE_ALPHA, [this](std::string& buffer) {
+                msg_buffer = buffer;
+                txt_msg.set("[" + msg_buffer + "] ");
+            });
+    };
+
+    btn_calls.on_select = [this, &nav](Button&) {
+        if (!transmit) {
+            text_prompt(nav, call_sign, 10, ENTER_KEYBOARD_MODE_ALPHA, [this](std::string& buffer) {
+                call_sign = buffer;
+                if (call_sign.empty())
+                    btn_calls.set_text("call sign?");
+                else
+                    btn_calls.set_text(call_sign);
+            });
+        }
+    };
+
+    audio::output::start();
+    auto vol = field_volume.value();
+    field_volume.set_value(0);
+    field_volume.set_value(vol);
+
+    tx_view.on_start = [this]() {
+        if (!chk_trans.value() && msg_buffer.empty()) {
+            tx_view.set_transmitting(false);
+            return;
+        }
+        tx_view.focus();
+        if (!tx_thread && !thread_running) {
+            thread_running = true;
+            tx_thread = chThdCreateFromHeap(NULL, 1024, NORMALPRIO + 5, tx_thread_fn, this);
+            tx_view.set_transmitting(true);
+        }
+
+        else
+            tx_view.set_transmitting(false);
+    };
+
+    tx_view.on_stop = [this]() {
+        baseband::set_morsetx_key(false);
+        transmitter_model.disable();
+
+        if (tx_thread) {
+            chThdTerminate(tx_thread);
+            chThdWait(tx_thread);
+        }
+        transmit = false;
+        transmit_time = 0;
+        tx_thread = nullptr;
+        thread_running = false;
+        tx_view.set_transmitting(false);
+        ui_toggle();
+    };
+
+    tx_view.on_edit_frequency = [this, &nav]() {
+        auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.target_frequency());
+        new_view->on_changed = [this](rf::Frequency f) {
+            transmitter_model.set_target_frequency(f);
+        };
+    };
+}
+
+MorseRadiotxView::~MorseRadiotxView() {
+    set_switches_repeat_config(initial_switch_config_);
+    if (tx_thread) {
+        chThdTerminate(tx_thread);
+        chThdWait(tx_thread);
+        if (!thread_running) tx_thread = nullptr;
+    }
+
+    transmitter_model.disable();
+    baseband::shutdown();
+    audio::output::stop();
+}
+
+void MorseRadiotxView::on_show() {
+    ptt_button_visibility(true);
+    start_time = 0;
+    end_time = 0;
+    transmit_time = 0;
+}
+
+void MorseRadiotxView::focus() {
+    options_mode.focus();
+}
+
+MorseRadiotxView::MorseTimings MorseRadiotxView::calculate_morse_timings(uint32_t wpm) {
+    MorseRadiotxView::MorseTimings t;
+    if (wpm < 10) wpm = 10;
+    if (wpm > 45) wpm = 45;
+    t.dot_ms = 1200 / wpm;
+
+    t.dash_ms = 3 * t.dot_ms;
+    t.symbol_gap = t.dot_ms;
+    t.char_gap = 3 * t.dot_ms;
+    t.word_gap = 7 * t.dot_ms;
+    return t;
+}
+
+void MorseRadiotxView::transmit_morse_message() {
+    std::string full_message = "";
+    // cal sign
+    if (chk_callsgn.value() && !call_sign.empty()) {
+        full_message = call_sign;
+        if (!chk_trans.value() && !msg_buffer.empty()) {
+            full_message += " " + msg_buffer;
+        }
+    } else {
+        if (!chk_trans.value()) full_message = msg_buffer;
+    }
+
+    if (full_message.empty() && !chk_trans.value()) {
+        ptt_button_visibility(false);
+        return;
+    }
+
+    // enable transmit
+    if (!transmit) {
+        transmit = true;
+        transmitter_model.enable();
+        ui_toggle();
+    }
+
+    for (size_t i = 0; i < full_message.length(); i++) {
+        if (chThdShouldTerminate()) break;
+
+        char c = full_message[i];
+
+        std::string s_char(1, c);
+        // space
+        if (c == ' ') {
+            console_text.write(" ");
+            chThdSleepMilliseconds(current_timings.word_gap);
+            continue;
+        }
+
+        const char* pattern = morse_decoder_.get_morse_pattern(c);
+
+        if (pattern != nullptr) {
+            txt_last.set(pattern);
+
+            // write blue char to console
+            console_text.write(STR_COLOR_BLUE + s_char);
+
+            // Morze (dih/dah) send
+            for (int j = 0; pattern[j] != '\0'; j++) {
+                baseband::set_morsetx_key(true);
+                if (pattern[j] == '.') {
+                    chThdSleepMilliseconds(current_timings.dot_ms);
+                } else if (pattern[j] == '-') {
+                    chThdSleepMilliseconds(current_timings.dash_ms);
+                }
+                if (chThdShouldTerminate()) break;
+                // pause between signs
+                baseband::set_morsetx_key(false);
+                chThdSleepMilliseconds(current_timings.symbol_gap);
+            }
+            if (chThdShouldTerminate()) break;
+            if (current_timings.char_gap > current_timings.symbol_gap) {
+                chThdSleepMilliseconds(current_timings.char_gap - current_timings.symbol_gap);
+            }
+        }
+    }
+
+    if (chk_trans.value()) ptt_button_visibility(false);
+    baseband::set_morsetx_key(false);
+    transmit_time = chTimeNow();
+    decode_timeout_calc = false;
+    thread_running = false;
+}
+
+void MorseRadiotxView::onPress() {
+    start_time = chTimeNow();
+    if (!transmit) {
+        transmit = true;
+        transmitter_model.enable();
+    }
+    baseband::set_morsetx_key(true);
+    if (end_time != 0) {
+        int64_t gap_delta = (chTimeNow() - end_time);
+        auto result = morse_decoder_.handleInput(-gap_delta);
+        if (result.isValid()) {
+            writeCharToConsole(result.text, result.confidence);
+        }
+    }
+    end_time = 0;
+    transmit_time = 0;
+    decode_timeout_calc = false;
+}
+
+void MorseRadiotxView::onRelease() {
+    end_time = chTimeNow();
+    transmit_time = end_time;
+    baseband::set_morsetx_key(false);
+    if (start_time != 0) {
+        int32_t press_delta = (end_time - start_time);
+        auto result = morse_decoder_.handleInput(press_delta);
+        if (result.isValid()) {
+            writeCharToConsole(result.text, result.confidence);
+        }
+    }
+    start_time = 0;
+    decode_timeout_calc = true;
+    baseband::request_beep_stop();
+}
+
+void MorseRadiotxView::writeCharToConsole(const std::string& ch, double confidence) {
+    if (ch.empty()) {
+        return;
+    }
+
+    txt_last.set(morse_decoder_.getLastSequence().c_str());
+
+    last_color_id = color_id;
+    std::string color = "";
+
+    if (ch == " ") {
+        color_id = 0;
+    } else if (ch[0] == '{') {  // no match
+        color_id = 0;
+    } else {
+        if (confidence == 1.5)
+            color_id = 4;
+        else if (confidence < 0.8)
+            color_id = 1;
+        else if (confidence < 0.9)
+            color_id = 2;
+        else
+            color_id = 3;
+    }
+    color = arr_color[color_id];
+    last_color_id = color_id;
+    console_text.write(color + ch);
+}
+
+void MorseRadiotxView::ptt_button_visibility(bool hidden) {
+    bool hiddenorig = btn_ptt.hidden();
+    if (hiddenorig != hidden) {
+        btn_ptt.hidden(hidden);
+        if (!hidden) btn_ptt.focus();
+        if (hidden) {
+            // hack fix until widget hidig problem is not solved.
+            auto r = btn_ptt.screen_rect();
+            Painter p;
+            p.fill_rectangle_unrolled8(r, Theme::getInstance()->fg_light->background);
+        }
+    }
+}
+
+void MorseRadiotxView::ui_toggle() {
+    // 0=AM, 1=FM, 2=DSB, 3=USB, 4=LSB
+
+    if (transmit) {
+        options_mode.set_style(Theme::getInstance()->fg_dark);
+        options_mode.set_focusable(false);
+        tone_.set_style(Theme::getInstance()->fg_dark);
+        tone_.set_focusable(false);
+        wpm_.set_style(Theme::getInstance()->fg_dark);
+        wpm_.set_focusable(false);
+        btn_message.set_style(Theme::getInstance()->fg_dark);
+        btn_calls.set_style(Theme::getInstance()->fg_dark);
+        chk_trans.set_style(Theme::getInstance()->fg_dark);
+        chk_trans.set_focusable(false);
+        bandwidth.set_style(Theme::getInstance()->fg_dark);
+        bandwidth.set_focusable(false);
+        chk_callsgn.set_style(Theme::getInstance()->fg_dark);
+        chk_callsgn.set_focusable(false);
+
+    } else {
+        options_mode.set_style(Theme::getInstance()->bg_darker);
+        options_mode.set_focusable(true);
+        wpm_.set_style(Theme::getInstance()->bg_darker);
+        wpm_.set_focusable(true);
+        btn_message.set_style(Theme::getInstance()->bg_darker);
+        btn_calls.set_style(Theme::getInstance()->bg_darker);
+        chk_trans.set_style(Theme::getInstance()->bg_darker);
+        chk_trans.set_focusable(true);
+        chk_callsgn.set_style(Theme::getInstance()->bg_darker);
+        chk_callsgn.set_focusable(true);
+        ptt_button_visibility(true);
+        tone_.set_style(Theme::getInstance()->bg_darker);
+        tone_.set_focusable(true);
+
+        if (current_mode == 1) {  // FM mode
+            bandwidth.set_style(Theme::getInstance()->bg_darker);
+            bandwidth.set_focusable(true);
+        } else {
+            bandwidth.set_style(Theme::getInstance()->fg_dark);
+            bandwidth.set_focusable(false);
+        }
+    }  // transmit false
+}
+
+inline bool MorseRadiotxView::tx_button_held() {
+    const auto switches_state = get_switches_state();
+    return switches_state[(size_t)ui::KeyEvent::Select];
+}
+
+void MorseRadiotxView::on_framesync() {
+    if (button_was_selected && !button_touch && !tx_button_held()) {
+        button_was_selected = false;
+        onRelease();
+    }
+
+    if (end_time != 0 && decode_timeout_calc) {
+        int64_t gap_delta = (chTimeNow() - end_time);
+
+        if (gap_delta >= morse_decoder_.getInterCharThreshold()) {
+            auto result = morse_decoder_.handleInput(-(int32_t)gap_delta);
+            if (result.isValid()) {
+                writeCharToConsole(result.text, result.confidence);
+            }
+        }
+        if (gap_delta >= morse_decoder_.getInterWordThreshold()) {
+            writeCharToConsole(" ", 1.0);
+            end_time = 0;
+            decode_timeout_calc = false;
+        }
+    }
+    if (transmit_time != 0 && transmit) {  // Tx disable if time is up
+        int64_t gap_delta = (chTimeNow() - transmit_time);
+        if (gap_delta >= ((morse_decoder_.getInterWordThreshold() * ((chk_trans.value()) ? 10 : 1)))) {
+            if (tx_thread) {
+                chThdTerminate(tx_thread);
+                chThdWait(tx_thread);
+            }
+            transmit = false;
+            tx_view.set_transmitting(false);
+            transmitter_model.disable();
+            thread_running = false;
+            tx_thread = nullptr;
+            transmit_time = 0;
+            if (!chk_trans.value()) writeCharToConsole(" ", 1.0);
+            ui_toggle();
+        }
+    }
+}
+
+}  // namespace ui::external_app::morseradiotx

firmware/application/external/morseradiotx/ui_morse_radiotx.hpp

@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2026 Pezsma
+ *
+ * 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 __MORSE_RADIOTX_H__
+#define __MORSE_RADIOTX_H__
+
+#include "ui.hpp"
+#include "ui_widget.hpp"
+#include "ui_navigation.hpp"
+#include "ui_language.hpp"
+#include "ui_painter.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_transmitter.hpp"
+#include "ui_textentry.hpp"
+#include "string_format.hpp"
+#include "morsedecoder.hpp"
+#include "irq_controls.hpp"
+#include "radio_state.hpp"
+#include "portapack.hpp"
+#include "message.hpp"
+#include "volume.hpp"
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "external_app.hpp"
+#include "string_format.hpp"
+#include <ch.h>
+#include <hal.h>
+
+namespace ui::external_app::morseradiotx {
+
+class MorseRadiotxView : public ui::View {
+   public:
+    MorseRadiotxView(ui::NavigationView& nav);
+    ~MorseRadiotxView();
+
+    MorseRadiotxView(const MorseRadiotxView&) = delete;
+    MorseRadiotxView(MorseRadiotxView&&) = delete;
+    MorseRadiotxView& operator=(const MorseRadiotxView&) = delete;
+    MorseRadiotxView& operator=(MorseRadiotxView&&) = delete;
+
+    std::string title() const override { return "Morse Tx"; }
+    void focus() override;
+    void on_show() override;
+    void transmit_morse_message();
+
+   private:
+    struct MorseTimings {
+        uint32_t dot_ms;
+        uint32_t dash_ms;
+        uint32_t symbol_gap;
+        uint32_t char_gap;
+        uint32_t word_gap;
+    };
+
+    MorseTimings current_timings{};
+
+    std::string msg_indicator{""};
+    MorseTimings calculate_morse_timings(uint32_t wpm);
+    void onPress();
+    void onRelease();
+    void on_framesync();
+    void writeCharToConsole(const std::string& ch, double confidence);
+    void ui_toggle();
+    bool tx_button_held();
+    void ptt_button_visibility(bool hidden);
+
+    ui::NavigationView& nav_;
+    MorseDecoder morse_decoder_{};
+    TxRadioState radio_state_{};
+    Thread* tx_thread{nullptr};
+
+    std::string msg_buffer{"PORTAPACK"};
+    uint8_t current_mode{0};  // 0=AM, 1=FM, 2=DSB, 3=USB, 4=LSB
+    uint8_t wpm{20};
+    uint32_t tone{700};
+    float band{5.8};
+    std::string call_sign{""};
+
+    app_settings::SettingsManager settings_{
+        "tx_morseradio",
+        app_settings::Mode::TX,
+        {
+            {"cmode"sv, &current_mode},
+            {"audtone"sv, &tone},
+            {"wpm"sv, &wpm},
+            {"message"sv, &msg_buffer},
+            {"bandwith"sv, &band},
+            {"call_sign"sv, &call_sign},
+        }};
+
+    TransmitterView tx_view{
+        (int16_t)UI_POS_Y_BOTTOM(4),
+        10000,
+        0, false};
+
+    AudioVolumeField field_volume{{UI_POS_X_RIGHT(2), UI_POS_Y_BOTTOM(5)}};
+    ui::OptionsField options_mode{
+        {UI_POS_X(5), UI_POS_Y(0)},
+        3,
+        {{"AM", 0}, {"FM", 1}, {"DSB", 2}, {"USB", 3}, {"LSB", 4}}};
+    NumberField tone_{{UI_POS_X(14), UI_POS_Y(0)}, 4, {400, 1400}, 10, ' ', true};
+    NumberField wpm_{{UI_POS_X(25), UI_POS_Y(0)}, 2, {10, 45}, 1, ' ', true};
+    FloatField bandwidth{{UI_POS_X(20), UI_POS_Y(3)}, 4, {1.0, 16.0}, 0.1, ' ', true, 1};
+
+    ui::Text txt_msg{{UI_POS_X(0), UI_POS_Y(1), UI_POS_MAXWIDTH, UI_POS_HEIGHT(1)}, "[" + msg_buffer + "] "};
+    ui::Button btn_message{{UI_POS_X(0), UI_POS_Y(2), UI_POS_WIDTH(11), UI_POS_HEIGHT(1)}, "Message"};
+    ui::Button btn_calls{{UI_POS_X(0), UI_POS_Y(4), UI_POS_WIDTH(11), UI_POS_HEIGHT(1)}, (call_sign.empty()) ? "call sign?" : call_sign};
+    Checkbox chk_trans{{UI_POS_X(14), UI_POS_Y(2)}, 13, "Manual trans.", true};
+    Checkbox chk_callsgn{{UI_POS_X(14), UI_POS_Y(4)}, 13, "Call sign", true};
+    ui::Text txt_last{{UI_POS_X(10), UI_POS_Y(5), UI_POS_WIDTH_REMAINING(10), UI_POS_HEIGHT(1)}, ""};
+    ui::Console console_text{{UI_POS_X(0), UI_POS_Y(7), UI_POS_MAXWIDTH, UI_POS_HEIGHT_REMAINING(14)}};
+    ui::Button btn_clear{{UI_POS_X(0), UI_POS_Y_BOTTOM(5), UI_POS_WIDTH(5), UI_POS_HEIGHT(1)}, "CLR"};
+    ui::Button btn_ptt{{UI_POS_X_CENTER(12), UI_POS_Y_BOTTOM(7), UI_POS_WIDTH(12), UI_POS_HEIGHT(3)}, "PTT"};
+
+    ui::Labels labels{
+        {{UI_POS_X(0), UI_POS_Y(0)}, "Mode:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(9), UI_POS_Y(0)}, "Tone:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(18), UI_POS_Y(0)}, "Hz", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(21), UI_POS_Y(0)}, "WPM:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(14), UI_POS_Y(3)}, "BandW:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(24), UI_POS_Y(3)}, "kHz", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(5)}, "Last seq:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(6)}, "Sent Message:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X_RIGHT(7), UI_POS_Y_BOTTOM(5)}, "Vol.:", Theme::getInstance()->fg_light->foreground},
+    };
+
+    uint8_t last_color_id{255};
+    uint8_t color_id{255};
+    std::string arr_color[4] = {STR_COLOR_WHITE, STR_COLOR_RED, STR_COLOR_YELLOW, STR_COLOR_GREEN};
+
+    bool button_touch{false};
+    bool button_was_selected{false};
+    bool decode_timeout_calc{false};
+    bool transmit{false};
+    bool thread_running = false;
+
+    uint8_t send_indicator{5};
+    int64_t start_time{0};
+    int64_t end_time{0};
+    int64_t transmit_time{0};
+    SwitchesState initial_switch_config_{};
+
+    MessageHandlerRegistration message_handler_framesync{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const p) {
+            (void)p;
+            this->on_framesync();
+        }};
+};
+
+}  // namespace ui::external_app::morseradiotx
+
+#endif  // __MORSE_RADIOTX_H__

firmware/application/external/sdusb/main.cpp

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2024 Bernd Herzog
+ *
+ * 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.hpp"
+#include "ui_sd_over_usb.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::sdusb {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<SdOverUsbView>();
+}
+}  // namespace ui::external_app::sdusb
+
+extern "C" {
+
+__attribute__((section(".external_app.app_sdusb.application_information"), used)) application_information_t _application_information_sdusb = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::sdusb::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "SD Over USB",
+    /*.bitmap_data = */ {
+        0xF0,
+        0x0F,
+        0x10,
+        0x08,
+        0x50,
+        0x0A,
+        0x10,
+        0x08,
+        0x10,
+        0x08,
+        0x10,
+        0x08,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF8,
+        0x1F,
+        0xF0,
+        0x0F,
+        0x80,
+        0x01,
+        0x80,
+        0x01,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::UTILITIES,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_usb_sd */ {'P', 'U', 'S', 'B'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}

firmware/application/external/sdusb/ui_sd_over_usb.cpp

@@ -23,7 +23,7 @@
 #include "ui_sd_over_usb.hpp"
 #include "portapack_shared_memory.hpp"
 
-namespace ui {
+namespace ui::external_app::sdusb {
 
 SdOverUsbView::SdOverUsbView(NavigationView& nav)
     : nav_(nav) {
@@ -46,7 +46,7 @@ SdOverUsbView::SdOverUsbView(NavigationView& nav)
         sdcStop(&SDCD1);
 
         portapack::shutdown(true);
-        m4_init(portapack::spi_flash::image_tag_usb_sd, portapack::memory::map::m4_code, false);
+        baseband::run_prepared_image(portapack::memory::map::m4_code.base());
         m0_halt();
         /* will not return*/
     };
@@ -56,4 +56,4 @@ void SdOverUsbView::focus() {
     button_run.focus();
 }
 
-} /* namespace ui */
+}  // namespace ui::external_app::sdusb

firmware/application/external/sdusb/ui_sd_over_usb.hpp

@@ -32,7 +32,7 @@
 
 #include <cstdint>
 
-namespace ui {
+namespace ui::external_app::sdusb {
 
 class SdOverUsbView : public View {
    public:
@@ -58,6 +58,6 @@ class SdOverUsbView : public View {
         "Run"};
 };
 
-} /* namespace ui */
+}  // namespace ui::external_app::sdusb
 
 #endif /*__UI_SD_OVER_USB_H__*/

firmware/application/external/siggen/main.cpp

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * 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.hpp"
+#include "ui_siggen.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::siggen {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<SigGenView>();
+}
+}  // namespace ui::external_app::siggen
+extern "C" {
+
+__attribute__((section(".external_app.app_siggen.application_information"), used)) application_information_t _application_information_siggen = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::siggen::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Signal gen",
+    /*.bitmap_data = */ {
+        0x18,
+        0x00,
+        0x24,
+        0x00,
+        0x42,
+        0x00,
+        0x42,
+        0x00,
+        0x42,
+        0x00,
+        0x42,
+        0x00,
+        0x81,
+        0x00,
+        0xAB,
+        0x6A,
+        0x80,
+        0x40,
+        0x00,
+        0x21,
+        0x00,
+        0x21,
+        0x00,
+        0x21,
+        0x00,
+        0x21,
+        0x00,
+        0x12,
+        0x00,
+        0x0C,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::green().v,
+    /*.menu_location = */ app_location_t::TX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_siggen */ {'P', 'S', 'I', 'G'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}

firmware/application/external/siggen/ui_siggen.cpp

@@ -31,7 +31,7 @@
 
 using namespace portapack;
 
-namespace ui {
+namespace ui::external_app::siggen {
 
 void SigGenView::focus() {
     options_shape.focus();
@@ -75,7 +75,7 @@ void SigGenView::on_tx_progress(const uint32_t progress, const bool done) {
 
 SigGenView::SigGenView(
     NavigationView& nav) {
-    baseband::run_image(portapack::spi_flash::image_tag_siggen);
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
 
     add_children({&labels,
                   &options_mod,
@@ -172,4 +172,4 @@ SigGenView::SigGenView(
     };
 }
 
-} /* namespace ui */
+}  // namespace ui::external_app::siggen

firmware/application/external/siggen/ui_siggen.hpp

@@ -33,7 +33,7 @@
 #include "portapack.hpp"
 #include "message.hpp"
 
-namespace ui {
+namespace ui::external_app::siggen {
 
 class SigGenView : public View {
    public:
@@ -139,6 +139,6 @@ class SigGenView : public View {
         }};
 };
 
-} /* namespace ui */
+}  // namespace ui::external_app::siggen
 
 #endif /*__SIGGEN_H__*/

firmware/application/external/subcarrx/ui_subcar.cpp

@@ -91,6 +91,7 @@ SubCarView::SubCarView(NavigationView& nav)
                   &button_clear_list,
                   &check_log,
                   &labels,
+                  &options_mode,
                   &recent_entries_view});
 
     baseband::run_prepared_image(portapack::memory::map::m4_code.base());
@@ -114,11 +115,17 @@ SubCarView::SubCarView(NavigationView& nav)
     recent_entries_view.on_select = [this](const SubCarRecentEntry& entry) {
         nav_.push<SubCarRecentEntryDetailView>(entry);
     };
-    baseband::set_subghzd_config(0, receiver_model.sampling_rate());  // 0=am
-    receiver_model.enable();
+
+    options_mode.on_change = [this](size_t, int32_t v) {
+        modulation = v;
+        chThdSleepMilliseconds(100);  // wait for the baseband thread to process the previous config, to avoid glitchy output when switching modes
+        baseband::set_subghzd_config(modulation, receiver_model.sampling_rate());
+    };
     signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
         on_tick_second();
     };
+    options_mode.set_selected_index(modulation, true);
+    receiver_model.enable();
 }
 
 void SubCarView::on_tick_second() {
@@ -176,6 +183,8 @@ const char* SubCarView::getSensorTypeName(FPROTO_SUBCAR_SENSOR type) {
             return "Fiat V0";
         case FPC_BMWV0:
             return "BMW V0";
+            /* case FPC_KIAV6:
+                 return "Kia V6";*/
 
         case FPC_Invalid:
         default:
@@ -266,10 +275,11 @@ void SubCarRecentEntryDetailView::parseProtocol() {
     if (entry_.sensorType == FPC_Invalid) return;
 
     if (entry_.sensorType == FPC_SUZUKI) {
-        uint32_t serial_button = (((entry_.data >> 32) & 0xFFF) << 20) | (entry_.data >> 12);
-        serial = serial_button >> 4;
-        uint8_t buttonid = serial_button & 0xF;
-        cnt = (entry_.data >> 44) & 0xFFFF;
+        uint32_t data_high = (uint32_t)(entry_.data >> 32);
+        uint32_t data_low = (uint32_t)entry_.data;
+        serial = ((data_high & 0xFFF) << 16) | (data_low >> 16);
+        uint8_t buttonid = (data_low >> 12) & 0xF;
+        cnt = (data_high << 4) >> 16;
         btn = to_string_dec_uint(buttonid);
         return;
     }
@@ -320,15 +330,78 @@ void SubCarRecentEntryDetailView::parseProtocol() {
     }
 
     if (entry_.sensorType == FPC_KIAV5) {
-        serial = (uint32_t)(((entry_.data >> 32) & 0x0FFFFFFF) >> 1);
-        uint8_t button = (entry_.data >> 61) & 0x07;
+        uint64_t yek = 0;
+        for (int i = 0; i < 8; i++) {
+            uint8_t byte = (entry_.data2 >> (i * 8)) & 0xFF;
+            uint8_t reversed = 0;
+            for (int b = 0; b < 8; b++) {
+                if (byte & (1 << b))
+                    reversed |= (1 << (7 - b));
+            }
+            yek |= ((uint64_t)reversed << ((7 - i) * 8));
+        }
+        serial = (uint32_t)((yek >> 32) & 0x0FFFFFFF);
+        uint8_t button = (uint8_t)((yek >> 60) & 0x0F);
+        uint32_t encrypted = (uint32_t)(yek & 0xFFFFFFFF);
         btn = to_string_dec_uint(button);
-        cnt = (uint16_t)(entry_.data & 0xFFFF);
+        // decode
+        uint8_t keystore_bytes[] = {0x53, 0x54, 0x46, 0x52, 0x4b, 0x45, 0x30, 0x30};
+        uint8_t s0 = (encrypted & 0xFF);
+        uint8_t s1 = (encrypted >> 8) & 0xFF;
+        uint8_t s2 = (encrypted >> 16) & 0xFF;
+        uint8_t s3 = (encrypted >> 24) & 0xFF;
+        int round_index = 1;
+        for (size_t i = 0; i < 18; i++) {
+            uint8_t r = keystore_bytes[round_index] & 0xFF;
+            int steps = 8;
+            while (steps > 0) {
+                uint8_t base;
+                if ((s3 & 0x40) == 0) {
+                    base = (s3 & 0x02) == 0 ? 0x74 : 0x2E;
+                } else {
+                    base = (s3 & 0x02) == 0 ? 0x3A : 0x5C;
+                }
+
+                if (s2 & 0x08) {
+                    base = (((base >> 4) & 0x0F) | ((base & 0x0F) << 4)) & 0xFF;
+                }
+                if (s1 & 0x01) {
+                    base = ((base & 0x3F) << 2) & 0xFF;
+                }
+                if (s0 & 0x01) {
+                    base = (base << 1) & 0xFF;
+                }
+
+                uint8_t temp = (s3 ^ s1) & 0xFF;
+                s3 = ((s3 & 0x7F) << 1) & 0xFF;
+                if (s2 & 0x80) {
+                    s3 |= 0x01;
+                }
+                s2 = ((s2 & 0x7F) << 1) & 0xFF;
+                if (s1 & 0x80) {
+                    s2 |= 0x01;
+                }
+                s1 = ((s1 & 0x7F) << 1) & 0xFF;
+                if (s0 & 0x80) {
+                    s1 |= 0x01;
+                }
+                s0 = ((s0 & 0x7F) << 1) & 0xFF;
+
+                uint8_t chk = (base ^ (r ^ temp)) & 0xFF;
+                if (chk & 0x80) {
+                    s0 |= 0x01;
+                }
+                r = ((r & 0x7F) << 1) & 0xFF;
+                steps--;
+            }
+            round_index = (round_index - 1) & 0x7;
+        }
+        cnt = (s0 + (s1 << 8)) & 0xFFFF;
     }
 
     if (entry_.sensorType == FPC_KIAV3V4) {
         // not decrypted!
-        serial = SD_NO_SERIAL;  //(uint32_t)entry_.data;
+        serial = (uint32_t)entry_.data;
         // uint8_t button = entry_.data2 & 0xFF;
         btn = "?";  // to_string_dec_uint(button);
     }
@@ -344,7 +417,7 @@ void SubCarRecentEntryDetailView::parseProtocol() {
     if (entry_.sensorType == FPC_KIAV1) {
         serial = (uint32_t)((entry_.data >> 24) & 0xFFFFFFFF);
         uint8_t button = (uint8_t)((entry_.data >> 16) & 0xFF);
-        cnt = (uint8_t)((entry_.data >> 8) & 0xFF);
+        cnt = (uint8_t)((entry_.data >> 4) & 0xF) << 8 | ((entry_.data >> 8) & 0xFF);
         btn = to_string_dec_uint(button);
     }
 
@@ -427,6 +500,13 @@ void SubCarRecentEntryDetailView::parseProtocol() {
         btn = to_string_dec_uint(button);
     }
 
+    /*if (entry_.sensorType == FPC_KIAV6) {
+        // not decrypted!
+        serial = 0;
+        btn = "?";
+        cnt = 0;
+    }*/
+
     return;
 }
 

firmware/application/external/subcarrx/ui_subcar.hpp

@@ -116,25 +116,27 @@ class SubCarView : public View {
         4'000'000 /* sampling rate */,
         ReceiverModel::Mode::AMAudio};
     bool logging = false;
+    uint8_t modulation = 0;
     app_settings::SettingsManager settings_{
         "rx_subcar",
         app_settings::Mode::RX,
         {
             {"log"sv, &logging},
+            {"modulationmode"sv, &modulation},
         }};
 
     SubCarRecentEntries recent{};
 
     RFAmpField field_rf_amp{
-        {13 * 8, UI_POS_Y(0)}};
+        {UI_POS_X(13), UI_POS_Y(0)}};
     LNAGainField field_lna{
-        {15 * 8, UI_POS_Y(0)}};
+        {UI_POS_X(15), UI_POS_Y(0)}};
     VGAGainField field_vga{
-        {18 * 8, UI_POS_Y(0)}};
+        {UI_POS_X(18), UI_POS_Y(0)}};
     RSSI rssi{
-        {21 * 8, 0, UI_POS_WIDTH_REMAINING(24), 4}};
+        {UI_POS_X(21), 0, UI_POS_WIDTH_REMAINING(24), 4}};
     Channel channel{
-        {21 * 8, 5, UI_POS_WIDTH_REMAINING(24), 4},
+        {UI_POS_X(21), 5, UI_POS_WIDTH_REMAINING(24), 4},
     };
     RxFrequencyField field_frequency{
         {UI_POS_X(0), UI_POS_Y(0)},
@@ -143,18 +145,22 @@ class SubCarView : public View {
     SignalToken signal_token_tick_second{};
 
     Button button_clear_list{
-        {0, 16, 7 * 8, 32},
+        {UI_POS_X(0), UI_POS_Y(1), UI_POS_WIDTH(7), UI_POS_HEIGHT(2)},
         "Clear"};
 
     Checkbox check_log{
-        {10 * 8, 18},
+        {UI_POS_X(8), UI_POS_Y(1)},
         3,
         "Log",
         true};
 
     Labels labels{
-        {{UI_POS_X_RIGHT(14), UI_POS_Y(1)}, "no fm yet :(", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(15), UI_POS_Y(1)}, "Mode:", Theme::getInstance()->fg_light->foreground},
     };
+    ui::OptionsField options_mode{
+        {UI_POS_X(22), UI_POS_Y(1)},
+        3,
+        {{"AM", 0}, {"FM", 1}}};
 
     static constexpr auto header_height = 3 * 16;
 
@@ -198,16 +204,16 @@ class SubCarRecentEntryDetailView : public View {
     std::string btn = "";
     uint32_t cnt = SD_NO_CNT;
 
-    Text text_type{{UI_POS_X(0), 1 * 16, 15 * 8, 16}, "?"};
-    Text text_id{{6 * 8, 2 * 16, 10 * 8, 16}, "?"};
+    Text text_type{{UI_POS_X(0), UI_POS_Y(1), UI_POS_WIDTH(15), UI_POS_HEIGHT(1)}, "?"};
+    Text text_id{{UI_POS_X(6), UI_POS_Y(2), UI_POS_WIDTH(10), UI_POS_HEIGHT(1)}, "?"};
 
     Console console{
-        {0, 4 * 16, screen_width, screen_height - (4 * 16) - 36}};
+        {UI_POS_X(0), UI_POS_Y(4), UI_POS_MAXWIDTH, screen_height - (4 * 16) - 36}};
 
     Labels labels{
         {{UI_POS_X(0), UI_POS_Y(0)}, "Type:", Theme::getInstance()->fg_light->foreground},
-        {{UI_POS_X(0), 2 * 16}, "Serial: ", Theme::getInstance()->fg_light->foreground},
-        {{UI_POS_X(0), 3 * 16}, "Data:", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(2)}, "Serial: ", Theme::getInstance()->fg_light->foreground},
+        {{UI_POS_X(0), UI_POS_Y(3)}, "Data:", Theme::getInstance()->fg_light->foreground},
     };
 
     Button button_done{

firmware/application/external/waterfall_designer/main.cpp

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2025 Bernd Herzog
+ *
+ * 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.hpp"
+#include "ui_waterfall_designer.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::waterfall_designer {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<WaterfallDesignerView>();
+}
+}  // namespace ui::external_app::waterfall_designer
+
+extern "C" {
+
+__attribute__((section(".external_app.app_waterfall_designer.application_information"), used)) application_information_t _application_information_waterfall_designer = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::waterfall_designer::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Wt Design",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0xFE,
+        0x7F,
+        0x03,
+        0xC0,
+        0x53,
+        0xD5,
+        0xAB,
+        0xCA,
+        0x53,
+        0xD5,
+        0xAB,
+        0xCA,
+        0x53,
+        0xD5,
+        0xAB,
+        0xCA,
+        0x53,
+        0xD5,
+        0x03,
+        0xC0,
+        0xFF,
+        0xFF,
+        0xFB,
+        0xD7,
+        0xFE,
+        0x7F,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::cyan().v,
+    /*.menu_location = */ app_location_t::UTILITIES,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_none */ {'P', 'C', 'A', 'P'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}

firmware/application/external/waterfall_designer/ui_waterfall_designer.cpp

@@ -0,0 +1,503 @@
+/*
+ * Copyleft Mr. Robot
+ * Copyright HTotoo
+ *
+ * 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_waterfall_designer.hpp"
+#include "baseband_api.hpp"
+#include "portapack.hpp"
+#include "ui_freqman.hpp"
+#include "file_path.hpp"
+#include "ui_fileman.hpp"
+#include "file_reader.hpp"
+#include "ui_textentry.hpp"
+
+using namespace portapack;
+
+namespace ui::external_app::waterfall_designer {
+
+WaterfallDesignerView::WaterfallDesignerView(NavigationView& nav)
+    : nav_{nav} {
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+
+    add_children({&labels,
+                  &field_frequency,
+                  &field_frequency_step,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &option_bandwidth,
+                  &record_view,
+                  &menu_view,
+                  &button_new,
+                  &button_open,
+                  &button_save,
+                  &button_add_level,
+                  &button_remove_level,
+                  &button_edit_color,
+                  &button_apply_setting,
+                  &waterfall});
+    ensure_directory(waterfalls_dir);
+    ui::Rect waterfall_rect{0, header_height, screen_rect().width(), screen_rect().height() - header_height};
+    waterfall.set_parent_rect(waterfall_rect);
+
+    menu_view.set_parent_rect({0, 1 * 16, screen_width, 7 * 16});
+
+    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);
+    };
+
+    freqman_set_bandwidth_option(SPEC_MODULATION, option_bandwidth);
+    option_bandwidth.on_change = [this](size_t, uint32_t new_capture_rate) {
+        /* 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. */
+
+        /* capture_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(new_capture_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);
+
+        capture_rate = new_capture_rate;
+
+        waterfall.start();
+    };
+
+    button_new.on_select = [this]() {
+        on_create_new_profile();
+    };
+
+    button_open.on_select = [this]() {
+        on_open_profile();
+    };
+
+    button_save.on_select = [this]() {
+        on_save_profile();
+    };
+
+    button_add_level.on_select = [this]() {
+        on_add_level();
+    };
+
+    button_remove_level.on_select = [this]() {
+        on_remove_level();
+    };
+
+    button_edit_color.on_select = [this]() {
+        on_edit_color();
+    };
+
+    button_apply_setting.on_select = [this]() {
+        if_apply_setting = true;
+        on_apply_current_to_wtf();
+        // nav_.pop();
+    };
+
+    menu_view.on_highlight = [this]() {
+        highlighted_index_ = menu_view.highlighted_index();
+    };
+
+    receiver_model.enable();
+    option_bandwidth.set_by_value(capture_rate);
+
+    record_view.on_error = [&nav](std::string message) {
+        nav.display_modal("Error", message);
+    };
+
+    button_save.hidden(true);
+    button_add_level.hidden(true);
+    button_remove_level.hidden(true);
+    button_edit_color.hidden(true);
+    button_apply_setting.hidden(true);
+
+    refresh_menu_view();
+}
+
+WaterfallDesignerView::WaterfallDesignerView(
+    NavigationView& nav,
+    ReceiverModel::settings_t override)
+    : WaterfallDesignerView(nav) {
+    // Settings to override when launched from another app (versus from AppSettings .ini file)
+    field_frequency.set_value(override.frequency_app_override);
+}
+
+WaterfallDesignerView::~WaterfallDesignerView() {
+    if (!if_apply_setting) restore_current_profile();
+    receiver_model.disable();
+    baseband::shutdown();
+}
+
+void WaterfallDesignerView::set_parent_rect(const 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 WaterfallDesignerView::focus() {
+    button_open.focus();
+}
+
+void WaterfallDesignerView::on_freqchg(int64_t freq) {
+    field_frequency.set_value(freq);
+}
+
+void WaterfallDesignerView::on_open_profile() {
+    auto open_view = nav_.push<FileLoadView>(".txt");
+    open_view->push_dir(waterfalls_dir);
+    open_view->on_changed = [this](std::filesystem::path new_file_path) {
+        on_profile_changed(new_file_path);
+    };
+}
+
+void WaterfallDesignerView::on_profile_changed(std::filesystem::path new_profile_path) {
+    current_profile_path = new_profile_path;
+    profile_levels.clear();
+
+    File playlist_file;
+    auto error = playlist_file.open(new_profile_path.string());
+
+    if (error) return;
+
+    menu_view.clear();
+    auto reader = FileLineReader(playlist_file);
+
+    for (const auto& line : reader) {
+        profile_levels.push_back(line);
+    }
+
+    for (auto& line : profile_levels) {
+        // remove empty lines
+        if (line == "\n" || line == "\r\n" || line == "\r") {
+            profile_levels.erase(std::remove(profile_levels.begin(), profile_levels.end(), line), profile_levels.end());
+        }
+
+        // remove line end \n etc
+        if (line.length() > 0 && (line[line.length() - 1] == '\n' || line[line.length() - 1] == '\r')) {
+            line = line.substr(0, line.length() - 1);
+        }
+    }
+
+    button_save.hidden(false);
+    button_add_level.hidden(false);
+    button_remove_level.hidden(false);
+    button_edit_color.hidden(false);
+    button_apply_setting.hidden(false);
+
+    refresh_menu_view();
+    on_apply_current_to_wtf();
+}
+
+void WaterfallDesignerView::refresh_menu_view() {
+    menu_view.clear();
+
+    for (const auto& line : profile_levels) {
+        if (line.length() == 0 || line[0] == '#') {
+            menu_view.add_item({line,
+                                ui::Color::grey(),
+                                &bitmap_icon_notepad,
+                                [this](KeyEvent) {
+                                    button_add_level.focus();
+                                }});
+        } else {
+            // index,R,G,B
+            size_t pos = 0;
+            size_t next_pos = 0;
+
+            // pass index
+            next_pos = line.find(',', pos);
+            if (next_pos == std::string::npos) continue;
+            pos = next_pos + 1;
+
+            // r
+            next_pos = line.find(',', pos);
+            if (next_pos == std::string::npos) continue;
+            uint8_t r = static_cast<uint8_t>(std::stoi(line.substr(pos, next_pos - pos)));
+            pos = next_pos + 1;
+
+            // g
+            next_pos = line.find(',', pos);
+            if (next_pos == std::string::npos) continue;
+            uint8_t g = static_cast<uint8_t>(std::stoi(line.substr(pos, next_pos - pos)));
+            pos = next_pos + 1;
+
+            // b
+            uint8_t b = static_cast<uint8_t>(std::stoi(line.substr(pos)));
+
+            ui::Color color = ui::Color(r, g, b);
+            menu_view.add_item({line,
+                                color,
+                                &bitmap_icon_cwgen,
+                                [this](KeyEvent) {
+                                    button_remove_level.focus();
+                                }});
+        }
+    }
+    set_dirty();
+}
+
+void WaterfallDesignerView::on_apply_current_to_wtf() {
+    std::filesystem::path system_read_path = "waterfall.txt";
+    copy_file(current_profile_path, system_read_path);
+
+    waterfall.load_gradient();
+
+    set_dirty();
+}
+
+void WaterfallDesignerView::on_save_profile() {
+    if (current_profile_path.empty()) {
+        nav_.display_modal("Err", "No profile file loaded");
+        return;
+    } else if (profile_levels.empty()) {
+        nav_.display_modal("Err", "List is empty");
+        return;
+    }
+
+    File profile_file;
+    auto error = profile_file.open(current_profile_path.string(), false, false);
+
+    if (error) {
+        nav_.display_modal("Err", "open err");
+        return;
+    }
+
+    // clear file
+    profile_file.seek(0);
+    profile_file.truncate();
+
+    // write new data
+    for (const auto& entry : profile_levels) {
+        profile_file.write_line(entry);
+    }
+
+    nav_.display_modal("Save", "Saved profile\n" + current_profile_path.string());
+}
+
+void WaterfallDesignerView::on_add_level() {
+    if (highlighted_index_ >= profile_levels.size()) return;
+    if (profile_levels[highlighted_index_].empty()) return;
+    if (profile_levels[highlighted_index_][0] == '#') return;
+    if (profile_levels[highlighted_index_].find(',') == std::string::npos) return;
+    size_t insert_pos = highlighted_index_;
+    std::string new_entry = "0,128,128,128";
+    profile_levels.insert(profile_levels.begin() + insert_pos, new_entry);
+    refresh_menu_view();
+    on_edit_color();
+}
+
+void WaterfallDesignerView::on_remove_level() {
+    if (highlighted_index_ >= profile_levels.size()) return;
+    if (profile_levels[highlighted_index_].empty()) return;
+    if (profile_levels[highlighted_index_][0] == '#') return;
+    if (profile_levels[highlighted_index_].find(',') == std::string::npos) return;
+    profile_levels.erase(profile_levels.begin() + highlighted_index_);
+    refresh_menu_view();
+}
+
+void WaterfallDesignerView::on_edit_color() {
+    if (highlighted_index_ >= profile_levels.size()) return;
+    if (profile_levels[highlighted_index_].empty()) return;
+    if (profile_levels[highlighted_index_][0] == '#') return;
+    if (profile_levels[highlighted_index_].find(',') == std::string::npos) return;
+
+    auto color_picker_view = nav_.push<WaterfallDesignerColorPickerView>(profile_levels[highlighted_index_]);
+    color_picker_view->on_save = [this](std::string new_color) {
+        profile_levels[highlighted_index_] = new_color;
+        refresh_menu_view();
+        on_apply_current_to_wtf();
+    };
+}
+
+void WaterfallDesignerView::backup_current_profile() {
+    std::filesystem::path curren_wtf_path = "waterfall.txt";
+    std::filesystem::path backup_path = waterfalls_dir / "wtf_des_bk.bk";
+    copy_file(curren_wtf_path, backup_path);
+}
+
+void WaterfallDesignerView::restore_current_profile() {
+    std::filesystem::path backup_path = waterfalls_dir / "wtf_des_bk.bk";
+    std::filesystem::path put_back_path = "waterfall.txt";
+    copy_file(backup_path, put_back_path);
+    delete_file(backup_path);
+}
+
+void WaterfallDesignerView::on_apply_setting() {
+}
+
+void WaterfallDesignerView::on_create_new_profile() {
+    text_prompt(
+        nav_,
+        file_name_buffer,
+        32 - 4,  // fat32
+        ENTER_KEYBOARD_MODE_ALPHA,
+        [this](std::string& buffer) {
+            if (buffer.empty()) return;
+
+            if (buffer.length() < 4 || buffer.substr(buffer.length() - 4) != ".txt") {
+                buffer += ".txt";
+            }
+
+            File new_file;
+            auto error = new_file.create(waterfalls_dir / buffer);
+            if (error) {
+                nav_.display_modal("Err", "create file err");
+                return;
+            }
+
+            profile_levels.clear();
+            current_profile_path = waterfalls_dir / buffer;
+            on_profile_changed(current_profile_path);
+        });
+}
+
+WaterfallDesignerColorPickerView::WaterfallDesignerColorPickerView(NavigationView& nav, std::string color_str)
+    : nav_{nav},
+      color_str_{color_str} {
+    add_children({&labels,
+                  &field_red,
+                  &field_green,
+                  &field_blue,
+                  &field_step,
+                  &field_index,
+                  &progressbar,
+                  &button_save});
+
+    progressbar.set_max(UINT8_MAX);
+
+    size_t pos = 0;
+    size_t next_pos = 0;
+
+    // index
+    next_pos = color_str.find(',', pos);
+    if (next_pos != std::string::npos) {
+        index_ = static_cast<uint8_t>(std::stoi(color_str.substr(pos, next_pos - pos)));
+        pos = next_pos + 1;
+    }
+
+    // r
+    next_pos = color_str.find(',', pos);
+    if (next_pos != std::string::npos) {
+        red_ = static_cast<uint8_t>(std::stoi(color_str.substr(pos, next_pos - pos)));
+        pos = next_pos + 1;
+    }
+
+    // g
+    next_pos = color_str.find(',', pos);
+    if (next_pos != std::string::npos) {
+        green_ = static_cast<uint8_t>(std::stoi(color_str.substr(pos, next_pos - pos)));
+        pos = next_pos + 1;
+    }
+
+    // b
+    blue_ = static_cast<uint8_t>(std::stoi(color_str.substr(pos)));
+
+    field_red.set_value(red_);
+    field_green.set_value(green_);
+    field_blue.set_value(blue_);
+    field_index.set_value(index_);
+
+    // cb
+    field_red.on_change = [this](int32_t) {
+        update_color_index();
+    };
+
+    field_green.on_change = [this](int32_t) {
+        update_color_index();
+    };
+
+    field_blue.on_change = [this](int32_t) {
+        update_color_index();
+    };
+
+    button_save.on_select = [this](Button&) {
+        if (on_save) on_save(build_color_str());
+        nav_.pop();
+    };
+
+    field_index.on_change = [this](int32_t) {
+        update_color_index();
+    };
+
+    field_step.on_change = [this](int32_t) {
+        field_red.set_step(field_step.value());
+        field_green.set_step(field_step.value());
+        field_blue.set_step(field_step.value());
+        field_index.set_step(field_step.value());
+    };
+
+    update_color_index();
+}
+
+void WaterfallDesignerColorPickerView::focus() {
+    button_save.focus();
+}
+
+void WaterfallDesignerColorPickerView::update_color_index() {
+    index_ = static_cast<uint8_t>(field_index.value());
+    red_ = static_cast<uint8_t>(field_red.value());
+    green_ = static_cast<uint8_t>(field_green.value());
+    blue_ = static_cast<uint8_t>(field_blue.value());
+
+    const Rect preview_rect{screen_width - 48, 1 * 16, 40, 40};
+
+    Painter painter_instance_2;
+    painter_instance_2.fill_rectangle(
+        {preview_rect.left(), preview_rect.top(), preview_rect.width(), preview_rect.height()},
+        ui::Color(red_, green_, blue_));
+}
+
+void WaterfallDesignerColorPickerView::paint(Painter& painter) {
+    // this is not duplicated code.
+    // because need to display color when enter,
+    // but it is too early to call update_color() in the constructor.
+
+    const Rect preview_rect{screen_width - 48, 1 * 16, 40, 40};
+
+    painter.fill_rectangle(
+        {preview_rect.left(), preview_rect.top(), preview_rect.width(), preview_rect.height()},
+        ui::Color(red_, green_, blue_));
+}
+
+std::string WaterfallDesignerColorPickerView::build_color_str() {
+    size_t index_pos = color_str_.find(',');
+    if (index_pos != std::string::npos) {
+        return color_str_.substr(0, index_pos + 1) +
+               to_string_dec_uint(red_) + "," +
+               to_string_dec_uint(green_) + "," +
+               to_string_dec_uint(blue_);
+    }
+    return to_string_dec_uint(index_) + "," + to_string_dec_uint(red_) + "," + to_string_dec_uint(green_) + "," + to_string_dec_uint(blue_);
+}
+
+} /* namespace ui::external_app::waterfall_designer */

firmware/application/external/waterfall_designer/ui_waterfall_designer.hpp

@@ -0,0 +1,265 @@
+/*
+ * Copyleft Mr. Robot
+ * Copyright HTotoo
+ *
+ * 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 __WATERFALL_DESIGNER_APP_HPP__
+#define __WATERFALL_DESIGNER_APP_HPP__
+
+#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"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "file_path.hpp"
+
+namespace ui::external_app::waterfall_designer {
+
+enum class ColorComponent {
+    RED,
+    GREEN,
+    BLUE
+};
+
+class WaterfallDesignerColorPickerView : public View {
+   public:
+    std::function<void(std::string)> on_save{};
+
+    WaterfallDesignerColorPickerView(NavigationView& nav, std::string color_str);
+
+    std::string title() const override { return "Color Picker"; };
+    void focus() override;
+    void paint(Painter& painter) override;
+
+   private:
+    NavigationView& nav_;
+    std::string color_str_;
+    uint8_t index_{0};
+    uint8_t red_{0};
+    uint8_t green_{0};
+    uint8_t blue_{0};
+
+    void update_color_index();
+    std::string build_color_str();
+
+    Labels labels{
+        {{0 * 8, 0 * 16}, "Index", Theme::getInstance()->fg_light->foreground},
+        {{0 * 8, 2 * 16}, "Red", Theme::getInstance()->fg_light->foreground},
+        {{0 * 8, 4 * 16}, "Green", Theme::getInstance()->fg_light->foreground},
+        {{0 * 8, 6 * 16}, "Blue", Theme::getInstance()->fg_light->foreground},
+        {{0 * 8, 8 * 16}, "Step", Theme::getInstance()->fg_light->foreground}};
+
+    NumberField field_index{
+        {0 * 8, 1 * 16},
+        3,
+        {0, 255},
+        1,
+        ' '};
+
+    NumberField field_red{
+        {0 * 8, 3 * 16},
+        3,
+        {0, 255},
+        1,
+        ' '};
+
+    NumberField field_green{
+        {0 * 8, 5 * 16},
+        3,
+        {0, 255},
+        1,
+        ' '};
+
+    NumberField field_blue{
+        {0 * 8, 7 * 16},
+        3,
+        {0, 255},
+        1,
+        ' '};
+
+    NumberField field_step{
+        {0 * 8, 9 * 16},
+        3,
+        {0, 255},
+        1,
+        ' '};
+
+    ProgressBar progressbar{
+        {0 * 8,
+         screen_height - 4 * 16 - 2 * 16 - 1 * 16,
+         screen_width,
+         2 * 16}};
+
+    Button button_save{
+        {0, screen_height - 4 * 16, screen_width, 4 * 16},
+        "Save"};
+};
+
+class WaterfallDesignerView : public View {
+   public:
+    WaterfallDesignerView(NavigationView& nav);
+    WaterfallDesignerView(NavigationView& nav, ReceiverModel::settings_t override);
+    ~WaterfallDesignerView();
+
+    void focus() override;
+    void set_parent_rect(const Rect new_parent_rect) override;
+
+    std::string title() const override { return "Wtf Design"; };
+
+   private:
+    uint32_t capture_rate{500000};
+    uint32_t file_format{0};
+    uint32_t highlighted_index_{0};
+    bool trim{false};
+    std::filesystem::path current_profile_path = "";
+    NavigationView& nav_;
+    RxRadioState radio_state_{ReceiverModel::Mode::Capture};
+    app_settings::SettingsManager settings_{
+        "rx_wtf_designer",
+        app_settings::Mode::RX,
+        {
+            {"capture_rate"sv, &capture_rate},
+            {"file_format"sv, &file_format},
+            {"trim"sv, &trim},
+        }};
+
+    Labels labels{
+        {{0 * 8, 1 * 16}, "Rate:", Theme::getInstance()->fg_light->foreground},
+        {{11 * 8, 1 * 16}, "Format:", Theme::getInstance()->fg_light->foreground},
+    };
+
+    RxFrequencyField field_frequency{
+        {0 * 8, 0 * 16},
+        nav_};
+
+    FrequencyStepView field_frequency_step{
+        {10 * 8, 0 * 16}};
+
+    RFAmpField field_rf_amp{
+        {16 * 8, 0 * 16}};
+
+    LNAGainField field_lna{
+        {18 * 8, 0 * 16}};
+
+    VGAGainField field_vga{
+        {21 * 8, 0 * 16}};
+
+    OptionsField option_bandwidth{
+        {24 * 8, 0 * 16},
+        5,
+        {}};
+
+    MenuView menu_view{};
+
+    NewButton button_new{
+        {0 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_file,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_open{
+        {4 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_load,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_save{
+        {8 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_save,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_add_level{
+        {12 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_add,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_remove_level{
+        {16 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_delete,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_edit_color{
+        {20 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_notepad,
+        Theme::getInstance()->fg_blue->foreground};
+
+    NewButton button_apply_setting{
+        {24 * 8, 8 * 16, 4 * 8, 32},
+        {},
+        &bitmap_icon_replay,
+        Theme::getInstance()->fg_blue->foreground};
+
+    void backup_current_profile();
+    void restore_current_profile();
+    void on_create_new_profile();
+    void on_open_profile();
+    void on_profile_changed(std::filesystem::path new_profile_path);
+    void on_save_profile();
+    void on_add_level();
+    void on_remove_level();
+    void on_edit_color();
+
+    void refresh_menu_view();
+
+    void on_apply_current_to_wtf();  // will restore if didn't apple, when distruct
+    void on_apply_setting();         // apply set
+
+    bool if_apply_setting{false};
+    /*NB:
+    this works as:
+    each time you change color, it apply as file realtime
+    however if you don't push the apply (play) btn, it would resotore in distructor,
+    if you push apply, it would apply and exit*/
+
+    std::vector<std::string> profile_levels{};
+
+    static constexpr ui::Dim header_height = 10 * 16;
+
+    RecordView record_view{// we still need it cuz it make waterfall correct
+                           {screen_width, screen_height, 30 * 8, 1 * 16},
+                           u"BBD_????.*",
+                           captures_dir,
+                           RecordView::FileType::RawS16,
+                           16384,
+                           3};
+
+    spectrum::WaterfallView waterfall{};
+    std::string file_name_buffer{};  // needed by text_prompy
+
+    MessageHandlerRegistration message_handler_freqchg{
+        Message::ID::FreqChangeCommand,
+        [this](Message* const p) {
+            const auto message = static_cast<const FreqChangeCommandMessage*>(p);
+            this->on_freqchg(message->freq);
+        }};
+
+    void on_freqchg(int64_t freq);
+};
+
+} /* namespace ui::external_app::waterfall_designer */
+
+#endif /*__WATERFALL_DESIGNER_APP_HPP__*/

firmware/application/freqman_db.cpp

@@ -122,7 +122,7 @@ options_t freqman_steps = {
     {"1kHz        ", 1000},
     {"5kHz (SA AM)", 5000},
     {"6.25kHz(NFM)", 6250},
-    {"8.33kHz(AIR)", 8330},
+    {"8.33kHz(AIR)", 8333},
     {"9kHz (EU AM)", 9000},
     {"10kHz(US AM)", 10000},
     {"12.5kHz(NFM)", 12500},
@@ -144,7 +144,7 @@ options_t freqman_steps_short = {
     {"1kHz", 1000},
     {"5kHz", 5000},
     {"6.25kHz", 6250},
-    {"8.33kHz", 8330},
+    {"8.33kHz", 8333},
     {"9kHz", 9000},
     {"10kHz", 10000},
     {"12.5kHz", 12500},

firmware/application/hackrf_core_mini.c

@@ -0,0 +1,56 @@
+#include "gpio_lpc.h"
+
+typedef enum {
+    LED1 = 0,
+    LED2 = 1,
+    LED3 = 2,
+    LED4 = 3,
+} led_t;
+
+/* GPIO Output PinMux */
+static struct gpio_t gpio_led[] = {
+    GPIO(2, 1),
+    GPIO(2, 2),
+    GPIO(2, 8),
+#ifdef RAD1O
+    GPIO(5, 26),
+#endif
+};
+
+void delay(uint32_t duration) {
+    while (duration--) {
+        /* cannot be optimized out */
+        __asm__ volatile("nop");
+    }
+}
+
+void delay_us_at_mhz(uint32_t us, uint32_t mhz) {
+    /* overflow-safe multiply */
+    uint64_t cycles64 = (uint64_t)us * (uint64_t)mhz;
+    if (cycles64 > UINT32_MAX) {
+        cycles64 = UINT32_MAX;
+    }
+    delay((uint32_t)cycles64);
+}
+
+void led_on(const led_t led) {
+    gpio_set(&gpio_led[led]);
+}
+
+void led_off(const led_t led) {
+    gpio_clear(&gpio_led[led]);
+}
+
+void halt_and_flash(const uint32_t duration) {
+    /* blink LED1, LED2, and LED3 */
+    while (1) {
+        led_on(LED1);
+        led_on(LED2);
+        led_on(LED3);
+        delay(duration);
+        led_off(LED1);
+        led_off(LED2);
+        led_off(LED3);
+        delay(duration);
+    }
+}

firmware/application/hw/debounce.cpp

@@ -37,6 +37,14 @@ void Debounce::enable_repeat() {
     repeat_enabled_ = true;
 }
 
+void Debounce::set_enable_repeat(bool enabled) {
+    repeat_enabled_ = enabled;
+}
+
+bool Debounce::get_repeat_enabled() {
+    return repeat_enabled_;
+}
+
 bool Debounce::get_long_press_enabled() const {
     return long_press_enabled_;
 }

firmware/application/hw/debounce.hpp

@@ -43,6 +43,8 @@ class Debounce {
     bool feed(const uint8_t bit);
     uint8_t state();
     void enable_repeat();
+    void set_enable_repeat(bool enabled);
+    bool get_repeat_enabled();
     bool get_long_press_enabled() const;
     void set_long_press_enabled(bool v);
     bool long_press_occurred();

firmware/application/hw/max2831.cpp

@@ -0,0 +1,441 @@
+/*
+ * Copyright (C) 2025 Great Scott Gadgets
+ *
+ * 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.
+ */
+
+/*
+ * MAX2831 driver ported from GSG HackRF reference implementation (max2831.c).
+ * Adapted to work with Mayhem's MAX283x abstraction layer.
+ */
+
+#ifdef PRALINE
+
+#include "max2831.hpp"
+
+#include "hackrf_hal.hpp"
+#include "hackrf_gpio.hpp"
+using namespace hackrf::one;
+
+#include "ch.h"
+#include "hal.h"
+
+#include <algorithm>
+#include <cstring>
+
+namespace max2831 {
+
+using namespace max283x;
+
+/*
+ * MAX2831 uses 9-bit SPI transfers.
+ * An 18-bit word is sent as two 9-bit transfers:
+ *   Word format: [VALUE:14][REG:4]
+ *   First transfer: bits 17:9 (high 9 bits)
+ *   Second transfer: bits 8:0 (low 9 bits)
+ *
+ * This matches the GSG reference implementation exactly.
+ */
+void MAX2831::write_reg(const uint8_t reg, const uint16_t value) {
+    uint32_t word = (((uint32_t)value & 0x3fff) << 4) | (reg & 0xf);
+    uint16_t values[2] = {
+        static_cast<uint16_t>(word >> 9),
+        static_cast<uint16_t>(word & 0x1ff)};
+    _target.transfer(values, 2);
+}
+
+void MAX2831::set_reg_field(const uint8_t reg, const uint16_t mask, const uint16_t value) {
+    _regs[reg] = (_regs[reg] & ~mask) | (value & mask);
+    mark_dirty(reg);
+}
+
+uint16_t MAX2831::get_reg_field(const uint8_t reg, const uint16_t mask, const uint8_t shift) {
+    return (_regs[reg] & mask) >> shift;
+}
+
+void MAX2831::mark_dirty(const uint8_t reg) {
+    _regs_dirty |= (1 << reg);
+}
+
+void MAX2831::mark_clean(const uint8_t reg) {
+    _regs_dirty &= ~(1 << reg);
+}
+
+void MAX2831::flush_reg(const uint8_t reg) {
+    write_reg(reg, _regs[reg]);
+    mark_clean(reg);
+}
+
+void MAX2831::flush_dirty() {
+    for (size_t r = 0; r < reg_count; r++) {
+        if ((_regs_dirty >> r) & 0x1) {
+            flush_reg(r);
+        }
+    }
+}
+
+void MAX2831::init() {
+    set_mode(Mode::Shutdown);
+
+    /* Configure GPIO pins for MAX2831 control */
+    gpio_max283x_enable.output();
+    gpio_max2831_rx_enable.output();
+    gpio_max2831_rxhp.output();
+    gpio_max2831_rxhp.write(0); /* RXHP low = 100 Hz HPF (default) */
+
+    /* Reset to default register values */
+    std::memcpy(_regs.data(), default_regs.data(), sizeof(_regs));
+    _regs_dirty = 0xFFFF;
+
+    /* Write default register values to chip */
+    flush_dirty();
+
+    /* Use SPI control instead of B1-B7 pins for gain settings.
+     * This matches the GSG reference: max2831_setup() */
+    set_reg_field(8, REG8_RXVGA_GAIN_SPI_EN, REG8_RXVGA_GAIN_SPI_EN);
+    set_reg_field(9, REG9_TXVGA_GAIN_SPI_EN, REG9_TXVGA_GAIN_SPI_EN);
+
+    /* Set initial gains - matches GSG reference */
+    set_reg_field(12, REG12_TXVGA_GAIN_MASK, 0x00); /* Minimum TX gain */
+    set_reg_field(7, REG7_RX_HPF_SEL_MASK, REG7_RX_HPF_30KHZ);
+    set_reg_field(11, REG11_LNA_GAIN_MASK, REG11_LNA_GAIN_MAX);
+    set_reg_field(11, REG11_RXVGA_GAIN_MASK, 0x18);  // Moderate RX VGA gain
+
+    /* FORCE MAXIMUM GAIN FOR TESTING */
+    // set_reg_field(11, REG11_RXVGA_GAIN_MASK, 0x1F);  // 62 dB VGA = MAX
+
+    /* Configure baseband filter for 8 MHz TX - matches GSG reference */
+    set_reg_field(8, REG8_LPF_COARSE_MASK, REG8_RX_LPF_7_5M);
+    set_reg_field(7, REG7_RX_LPF_FINE_MASK, REG7_RX_LPF_FINE_100);
+    set_reg_field(7, REG7_TX_LPF_FINE_MASK, REG7_TX_LPF_FINE_100);
+
+    /* Disable clock output */
+    set_reg_field(14, REG14_CLKOUT_PIN_EN, 0);
+
+    /* Write all modified registers */
+    flush_dirty();
+
+    set_mode(Mode::Standby);
+}
+
+void MAX2831::set_mode(const Mode mode) {
+    _mode = mode;
+
+    /*
+     * MAX2831 mode control via ENABLE and RXTX pins.
+     * From GSG hackrf max2831_target.c:
+     *
+     *   Shutdown: ENABLE=0, RXTX=0
+     *   Standby:  ENABLE=0, RXTX=1  (PLL/VCO/LO on, ready for quick TX/RX)
+     *   RX:       ENABLE=1, RXTX=0
+     *   TX:       ENABLE=1, RXTX=1
+     *
+     * Note: gpio_max2831_rx_enable is the RXTX mode select pin.
+     * RXTX=0 selects RX, RXTX=1 selects TX.
+     */
+
+    /* Handle calibration mode bits if needed */
+    bool tx_cal = (mode == Mode::Tx_Calibration);
+    bool rx_cal = (mode == Mode::Rx_Calibration);
+
+    uint16_t current_tx_cal = get_reg_field(6, REG6_TX_CAL_MODE_EN, REG6_TX_CAL_MODE_EN_SHIFT);
+    uint16_t current_rx_cal = get_reg_field(6, REG6_RX_CAL_MODE_EN, REG6_RX_CAL_MODE_EN_SHIFT);
+
+    if (current_tx_cal != (tx_cal ? 1 : 0)) {
+        set_reg_field(6, REG6_TX_CAL_MODE_EN, tx_cal ? REG6_TX_CAL_MODE_EN : 0);
+        flush_dirty();
+    }
+    if (current_rx_cal != (rx_cal ? 1 : 0)) {
+        set_reg_field(6, REG6_RX_CAL_MODE_EN, rx_cal ? REG6_RX_CAL_MODE_EN : 0);
+        flush_dirty();
+    }
+
+    switch (mode) {
+        default:
+        case Mode::Shutdown:
+            gpio_max2831_rx_enable.write(0); /* RXTX=0 */
+            gpio_max283x_enable.write(0);    /* ENABLE=0 */
+            break;
+        case Mode::Standby:
+            gpio_max2831_rx_enable.write(1); /* RXTX=1 */
+            gpio_max283x_enable.write(0);    /* ENABLE=0 */
+            break;
+        case Mode::Transmit:
+        case Mode::Tx_Calibration:
+            gpio_max2831_rx_enable.write(1); /* RXTX=1 for TX */
+            gpio_max283x_enable.write(1);    /* ENABLE=1 */
+            break;
+        case Mode::Receive:
+        case Mode::Rx_Calibration:
+            gpio_max2831_rx_enable.write(0); /* RXTX=0 for RX */
+            gpio_max283x_enable.write(1);    /* ENABLE=1 */
+            break;
+    }
+
+    /* Update LPF bandwidth for current mode */
+    if (_desired_lpf_bw > 0) {
+        set_lpf_bandwidth_internal(_desired_lpf_bw);
+    }
+}
+
+void MAX2831::set_tx_vga_gain(const int_fast8_t db) {
+    /* TX VGA gain: 0-31 dB in ~1 dB steps
+     * Register value: gain * 2 | 1, max 0x3F
+     * This matches GSG reference: max2831_set_txvga_gain() */
+    int_fast8_t db_clipped = std::max(0, std::min(31, (int)db));
+    uint16_t value = std::min((db_clipped << 1) | 1, 0x3f);
+    set_reg_field(12, REG12_TXVGA_GAIN_MASK, value);
+    flush_reg(12);
+}
+
+void MAX2831::set_lna_gain(const int_fast8_t db) {
+    /*
+     * LNA gain has 3 settings (from GSG reference):
+     *   MAX (33 dB), -16 dB from max (17 dB), -33 dB from max (0 dB)
+     * Map from MAX2837 8 dB steps for compatibility
+     */
+    uint16_t gain_val;
+    if (db >= 32) {
+        gain_val = REG11_LNA_GAIN_MAX;
+    } else if (db >= 16) {
+        gain_val = REG11_LNA_GAIN_M16;
+    } else {
+        gain_val = REG11_LNA_GAIN_M33;
+    }
+    set_reg_field(11, REG11_LNA_GAIN_MASK, gain_val);
+    flush_reg(11);
+}
+
+void MAX2831::set_vga_gain(const int_fast8_t db) {
+    /* VGA gain: 0-62 dB in 2 dB steps
+     * This matches GSG reference: max2831_set_vga_gain() */
+    if ((db & 0x1) || db > 62) {
+        return; /* Invalid: must be even and <= 62 */
+    }
+    int_fast8_t db_clipped = std::max(0, std::min(62, (int)db));
+    uint16_t value = (db_clipped >> 1) & 0x1f;
+    set_reg_field(11, REG11_RXVGA_GAIN_MASK, value);
+    flush_reg(11);
+}
+
+/*
+ * LPF bandwidth tables from GSG reference max2831.c
+ */
+struct lpf_ft_t {
+    uint32_t bandwidth_hz;
+    uint8_t ft;
+};
+
+struct lpf_ft_fine_t {
+    uint8_t percent;
+    uint8_t ft_fine;
+};
+
+/* Measured -0.5 dB complex baseband bandwidth for each register setting */
+static constexpr lpf_ft_t rx_lpf_ft[] = {
+    {11600000, REG8_RX_LPF_7_5M},
+    {15100000, REG8_RX_LPF_8_5M},
+    {22600000, REG8_RX_LPF_15M},
+    {28300000, REG8_RX_LPF_18M},
+    {0, 0},
+};
+
+static constexpr lpf_ft_fine_t rx_lpf_ft_fine[] = {
+    {90, REG7_RX_LPF_FINE_90},
+    {95, REG7_RX_LPF_FINE_95},
+    {100, REG7_RX_LPF_FINE_100},
+    {105, REG7_RX_LPF_FINE_105},
+    {110, REG7_RX_LPF_FINE_110},
+    {0, 0},
+};
+
+static constexpr lpf_ft_t tx_lpf_ft[] = {
+    {11900000, REG8_TX_LPF_8M},
+    {15800000, REG8_TX_LPF_11M},
+    {23600000, REG8_TX_LPF_16_5M},
+    {31300000, REG8_TX_LPF_22_5M},
+    {0, 0},
+};
+
+static constexpr lpf_ft_fine_t tx_lpf_ft_fine[] = {
+    {90, REG7_TX_LPF_FINE_90},
+    {95, REG7_TX_LPF_FINE_95},
+    {100, REG7_TX_LPF_FINE_100},
+    {105, REG7_TX_LPF_FINE_105},
+    {110, REG7_TX_LPF_FINE_110},
+    {115, REG7_TX_LPF_FINE_115},
+    {0, 0},
+};
+
+uint32_t MAX2831::set_lpf_bandwidth_internal(const uint32_t bandwidth_hz) {
+    const lpf_ft_t* coarse;
+    const lpf_ft_fine_t* fine;
+
+    if (_mode == Mode::Receive || _mode == Mode::Rx_Calibration) {
+        coarse = rx_lpf_ft;
+        fine = rx_lpf_ft_fine;
+    } else {
+        coarse = tx_lpf_ft;
+        fine = tx_lpf_ft_fine;
+    }
+
+    /* Find coarse and fine settings for LPF - matches GSG reference */
+    bool found = false;
+    const lpf_ft_fine_t* f = fine;
+    for (; coarse->bandwidth_hz != 0; coarse++) {
+        uint32_t coarse_aux = coarse->bandwidth_hz / 100;
+        for (f = fine; f->percent != 0; f++) {
+            if ((coarse_aux * f->percent) >= bandwidth_hz) {
+                found = true;
+                break;
+            }
+        }
+        if (found) break;
+    }
+
+    /* Use the widest setting if a wider bandwidth than our maximum is requested */
+    if (!found) {
+        coarse--;
+        f--;
+    }
+
+    /* Program found settings */
+    set_reg_field(8, REG8_LPF_COARSE_MASK, coarse->ft);
+    if (_mode == Mode::Receive || _mode == Mode::Rx_Calibration) {
+        set_reg_field(7, REG7_RX_LPF_FINE_MASK, f->ft_fine);
+    } else {
+        /* TX fine values are already shifted in the constants (REG7_TX_LPF_FINE_*) */
+        set_reg_field(7, REG7_TX_LPF_FINE_MASK, f->ft_fine);
+    }
+    flush_dirty();
+
+    return coarse->bandwidth_hz * f->percent / 100;
+}
+
+void MAX2831::set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) {
+    _desired_lpf_bw = bandwidth_minimum;
+    if (_mode == Mode::Receive || _mode == Mode::Rx_Calibration) {
+        set_lpf_bandwidth_internal(bandwidth_minimum);
+    }
+}
+
+void MAX2831::set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) {
+    _desired_lpf_bw = bandwidth_minimum;
+    if (_mode == Mode::Transmit || _mode == Mode::Tx_Calibration) {
+        set_lpf_bandwidth_internal(bandwidth_minimum);
+    }
+}
+
+bool MAX2831::set_frequency(const rf::Frequency lo_frequency) {
+    /*
+     * MAX2831 frequency synthesis from GSG reference max2831_set_frequency():
+     *   F_LO = F_REF * (N + F/2^20) / R
+     * Where:
+     *   F_REF = 40 MHz reference
+     *   R = reference divider (1 or 2), we use R=2
+     *   N = integer divider (8 bits)
+     *   F = fractional divider (20 bits)
+     *
+     * Using R=2: F_LO = 40M * (N + F/2^20) / 2 = 20M * (N + F/2^20)
+     */
+
+    /* MAX2831 supports 2.3-2.6 GHz */
+    if (lo_frequency < 2300000000ULL || lo_frequency > 2600000000ULL) {
+        return false;
+    }
+
+    /* From GSG reference: ASSUME 40MHz PLL. Ratio = F*R/40,000,000.
+     * TODO: fixed to R=2. Check if it's worth exploring R=1. */
+    uint32_t freq = lo_frequency;
+    freq += (20000000 >> 21); /* Round to nearest frequency */
+    uint32_t div_int = freq / 20000000;
+    uint32_t div_rem = freq % 20000000;
+    uint32_t div_frac = 0;
+    uint32_t div_cmp = 20000000;
+
+    for (int i = 0; i < 20; i++) {
+        div_frac <<= 1;
+        div_rem <<= 1;
+        if (div_rem >= div_cmp) {
+            div_frac |= 0x1;
+            div_rem -= div_cmp;
+        }
+    }
+
+    /* Write order matters - matches GSG reference */
+    /* REG 3: SYN_INT (bits 7:0) and SYN_FRAC_LO (bits 13:8) */
+    uint16_t reg3_val = (div_int & 0xFF) | ((div_frac & 0x3F) << 8);
+    _regs[3] = reg3_val;
+    mark_dirty(3);
+
+    /* REG 4: SYN_FRAC_HI (bits 13:0) - upper 14 bits of 20-bit fractional */
+    uint16_t reg4_val = (div_frac >> 6) & 0x3FFF;
+    _regs[4] = reg4_val;
+    mark_dirty(4);
+
+    flush_dirty();
+
+    return true;
+}
+
+void MAX2831::set_rx_LO_iq_phase_calibration(const size_t v) {
+    /* MAX2831 doesn't have the same IQ calibration as MAX2837 */
+    (void)v;
+}
+
+void MAX2831::set_tx_LO_iq_phase_calibration(const size_t v) {
+    /* MAX2831 doesn't have the same IQ calibration as MAX2837 */
+    (void)v;
+}
+
+void MAX2831::set_rx_buff_vcm(const size_t v) {
+    /* MAX2831 RX IQ common mode voltage is in register 15
+     * Values: 0=1.1V, 1=1.2V, 2=1.3V, 3=1.45V */
+    uint16_t vcm = std::min(v, (size_t)3) << REG15_RXIQ_VCM_SHIFT;
+    set_reg_field(15, REG15_RXIQ_VCM_MASK, vcm);
+    flush_reg(15);
+}
+
+int8_t MAX2831::temp_sense() {
+    /* MAX2831 temperature sensor can be read via RSSI MUX.
+     * This would require:
+     * 1. Switch RSSI_MUX to temperature mode
+     * 2. Read the ADC
+     * 3. Switch back to RSSI mode
+     * For now, return a placeholder value. */
+    return 25; /* Room temperature placeholder */
+}
+
+reg_t MAX2831::read(const address_t reg_num) {
+    /* MAX2831 doesn't support SPI read, return cached value */
+    if (reg_num < reg_count) {
+        return _regs[reg_num];
+    }
+    return 0;
+}
+
+void MAX2831::write(const address_t reg_num, const reg_t value) {
+    if (reg_num < reg_count) {
+        _regs[reg_num] = value & 0x3FFF; /* 14-bit registers */
+        write_reg(reg_num, _regs[reg_num]);
+        mark_clean(reg_num);
+    }
+}
+
+}  // namespace max2831
+#endif

firmware/application/hw/max2831.hpp

@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2025 Great Scott Gadgets
+ *
+ * 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.
+ */
+
+/*
+ * MAX2831 driver ported from GSG HackRF reference implementation.
+ * Register definitions match max2831_regs.def from hackrf firmware.
+ */
+
+#ifndef __MAX2831_H__
+#define __MAX2831_H__
+
+#include "max283x.hpp"
+#include "gpio.hpp"
+#include "spi_arbiter.hpp"
+
+#include <cstdint>
+#include <array>
+
+namespace max2831 {
+
+using namespace max283x;
+
+/* MAX2831 has 16 registers, each containing 14 bits of data */
+constexpr size_t reg_count = 16;
+
+/* Default register values from GSG HackRF reference (max2831.c) */
+constexpr std::array<uint16_t, reg_count> default_regs = {
+    0x1740, /* 0: enable fractional mode (Table 16 recommends 0x0740, clearing unknown bit) */
+    0x119a, /* 1 */
+    0x1003, /* 2 */
+    0x0079, /* 3: PLL divider settings for 2437 MHz */
+    0x3666, /* 4: PLL divider settings for 2437 MHz */
+    0x00a4, /* 5: divide reference frequency by 2 */
+    0x0060, /* 6: enable TX power detector */
+    0x1022, /* 7: 110% TX LPF bandwidth */
+    0x2021, /* 8: pin control of RX gain, 11 MHz LPF bandwidth */
+    0x03b5, /* 9: pin control of TX gain */
+    0x1d80, /* 10: 3.5 us PA enable delay, zero PA bias */
+    0x0074, /* 11: LNA high gain, RX VGA moderate gain (Table 27 recommends 0x007f, maximum gain) */
+    0x0140, /* 12: TX VGA minimum */
+    0x0e92, /* 13 */
+    0x0100, /* 14: reference clock output disabled */
+    0x0145, /* 15: RX IQ common mode 1.1 V */
+};
+
+/*
+ * Register bit field definitions from max2831_regs.def
+ * Format: REG<num>_<field>_<info>
+ */
+
+/* REG 0: PLL Mode */
+constexpr uint16_t REG0_PLL_MODE_SHIFT = 10;
+constexpr uint16_t REG0_PLL_MODE_MASK = (1 << REG0_PLL_MODE_SHIFT);
+constexpr uint16_t REG0_PLL_MODE_INTEGER = 0;
+constexpr uint16_t REG0_PLL_MODE_FRACTIONAL = 1;
+
+/* REG 3: Synthesizer Integer and Fractional Low */
+constexpr uint16_t REG3_SYN_INT_SHIFT = 0;
+constexpr uint16_t REG3_SYN_INT_MASK = 0x00FF; /* D7:D0 - Integer divider (8 bits) */
+constexpr uint16_t REG3_SYN_FRAC_LO_SHIFT = 8;
+constexpr uint16_t REG3_SYN_FRAC_LO_MASK = 0x3F00; /* D13:D8 - Low 6 bits of fractional divider */
+
+/* REG 4: Synthesizer Fractional High */
+constexpr uint16_t REG4_SYN_FRAC_HI_MASK = 0x3FFF; /* D13:D0 - High 14 bits of fractional divider */
+
+/* REG 5: Reference Divider and Lock Detect */
+constexpr uint16_t REG5_SYN_REF_DIV_SHIFT = 2;
+constexpr uint16_t REG5_SYN_REF_DIV_1 = (0 << REG5_SYN_REF_DIV_SHIFT);
+constexpr uint16_t REG5_SYN_REF_DIV_2 = (1 << REG5_SYN_REF_DIV_SHIFT);
+
+/* REG 6: Calibration Mode */
+constexpr uint16_t REG6_RX_CAL_MODE_EN_SHIFT = 0;
+constexpr uint16_t REG6_RX_CAL_MODE_EN = (1 << REG6_RX_CAL_MODE_EN_SHIFT);
+constexpr uint16_t REG6_TX_CAL_MODE_EN_SHIFT = 1;
+constexpr uint16_t REG6_TX_CAL_MODE_EN = (1 << REG6_TX_CAL_MODE_EN_SHIFT);
+constexpr uint16_t REG6_TX_POWER_DETECT_EN_SHIFT = 6;
+constexpr uint16_t REG6_TX_POWER_DETECT_EN = (1 << REG6_TX_POWER_DETECT_EN_SHIFT);
+
+/* REG 7: LPF Fine Adjustment and RX HPF */
+constexpr uint16_t REG7_RX_LPF_FINE_SHIFT = 0;
+constexpr uint16_t REG7_RX_LPF_FINE_MASK = 0x0007; /* D2:D0 */
+constexpr uint16_t REG7_RX_LPF_FINE_90 = 0;
+constexpr uint16_t REG7_RX_LPF_FINE_95 = 1;
+constexpr uint16_t REG7_RX_LPF_FINE_100 = 2;
+constexpr uint16_t REG7_RX_LPF_FINE_105 = 3;
+constexpr uint16_t REG7_RX_LPF_FINE_110 = 4;
+
+constexpr uint16_t REG7_TX_LPF_FINE_SHIFT = 3;
+constexpr uint16_t REG7_TX_LPF_FINE_MASK = 0x0038; /* D5:D3 */
+constexpr uint16_t REG7_TX_LPF_FINE_90 = (0 << REG7_TX_LPF_FINE_SHIFT);
+constexpr uint16_t REG7_TX_LPF_FINE_95 = (1 << REG7_TX_LPF_FINE_SHIFT);
+constexpr uint16_t REG7_TX_LPF_FINE_100 = (2 << REG7_TX_LPF_FINE_SHIFT);
+constexpr uint16_t REG7_TX_LPF_FINE_105 = (3 << REG7_TX_LPF_FINE_SHIFT);
+constexpr uint16_t REG7_TX_LPF_FINE_110 = (4 << REG7_TX_LPF_FINE_SHIFT);
+constexpr uint16_t REG7_TX_LPF_FINE_115 = (5 << REG7_TX_LPF_FINE_SHIFT);
+
+constexpr uint16_t REG7_RX_HPF_SEL_SHIFT = 12;
+constexpr uint16_t REG7_RX_HPF_SEL_MASK = 0x3000; /* D13:D12 */
+constexpr uint16_t REG7_RX_HPF_100HZ = (0 << REG7_RX_HPF_SEL_SHIFT);
+constexpr uint16_t REG7_RX_HPF_4KHZ = (1 << REG7_RX_HPF_SEL_SHIFT);
+constexpr uint16_t REG7_RX_HPF_30KHZ = (2 << REG7_RX_HPF_SEL_SHIFT);
+
+/* REG 8: LPF Coarse, RSSI MUX, and RX VGA SPI Enable */
+constexpr uint16_t REG8_LPF_COARSE_SHIFT = 0;
+constexpr uint16_t REG8_LPF_COARSE_MASK = 0x0003; /* D1:D0 */
+/* RX and TX share the same coarse LPF setting bits */
+constexpr uint16_t REG8_RX_LPF_7_5M = 0;
+constexpr uint16_t REG8_RX_LPF_8_5M = 1;
+constexpr uint16_t REG8_RX_LPF_15M = 2;
+constexpr uint16_t REG8_RX_LPF_18M = 3;
+constexpr uint16_t REG8_TX_LPF_8M = 0;
+constexpr uint16_t REG8_TX_LPF_11M = 1;
+constexpr uint16_t REG8_TX_LPF_16_5M = 2;
+constexpr uint16_t REG8_TX_LPF_22_5M = 3;
+
+constexpr uint16_t REG8_RSSI_MUX_SHIFT = 8;
+constexpr uint16_t REG8_RSSI_MUX_MASK = 0x0300; /* D9:D8 */
+constexpr uint16_t REG8_RSSI_MUX_RSSI = (0 << REG8_RSSI_MUX_SHIFT);
+constexpr uint16_t REG8_RSSI_MUX_TEMP = (1 << REG8_RSSI_MUX_SHIFT);
+constexpr uint16_t REG8_RSSI_MUX_TX_POWER = (2 << REG8_RSSI_MUX_SHIFT);
+
+constexpr uint16_t REG8_RXVGA_GAIN_SPI_EN_SHIFT = 12;
+constexpr uint16_t REG8_RXVGA_GAIN_SPI_EN = (1 << REG8_RXVGA_GAIN_SPI_EN_SHIFT);
+
+/* REG 9: TX VGA SPI Enable */
+constexpr uint16_t REG9_TXVGA_GAIN_SPI_EN_SHIFT = 10;
+constexpr uint16_t REG9_TXVGA_GAIN_SPI_EN = (1 << REG9_TXVGA_GAIN_SPI_EN_SHIFT);
+
+/* REG 11: RX Gain */
+constexpr uint16_t REG11_RXVGA_GAIN_SHIFT = 0;
+constexpr uint16_t REG11_RXVGA_GAIN_MASK = 0x001F; /* D4:D0 - 5 bits */
+
+constexpr uint16_t REG11_LNA_GAIN_SHIFT = 5;
+constexpr uint16_t REG11_LNA_GAIN_MASK = 0x0060;                     /* D6:D5 - 2 bits */
+constexpr uint16_t REG11_LNA_GAIN_M33 = (0 << REG11_LNA_GAIN_SHIFT); /* -33 dB from max (min) */
+constexpr uint16_t REG11_LNA_GAIN_M16 = (2 << REG11_LNA_GAIN_SHIFT); /* -16 dB from max */
+constexpr uint16_t REG11_LNA_GAIN_MAX = (3 << REG11_LNA_GAIN_SHIFT); /* Maximum LNA gain */
+
+/* REG 12: TX VGA Gain */
+constexpr uint16_t REG12_TXVGA_GAIN_SHIFT = 0;
+constexpr uint16_t REG12_TXVGA_GAIN_MASK = 0x003F; /* D5:D0 - 6 bits */
+
+/* REG 14: Clock Output */
+constexpr uint16_t REG14_CLKOUT_PIN_EN_SHIFT = 9;
+constexpr uint16_t REG14_CLKOUT_PIN_EN = (1 << REG14_CLKOUT_PIN_EN_SHIFT);
+
+/* REG 15: RX IQ Common Mode */
+constexpr uint16_t REG15_RXIQ_VCM_SHIFT = 10;
+constexpr uint16_t REG15_RXIQ_VCM_MASK = 0x0C00;                      /* D11:D10 - 2 bits */
+constexpr uint16_t REG15_RXIQ_VCM_1_1 = (0 << REG15_RXIQ_VCM_SHIFT);  /* 1.1V */
+constexpr uint16_t REG15_RXIQ_VCM_1_2 = (1 << REG15_RXIQ_VCM_SHIFT);  /* 1.2V */
+constexpr uint16_t REG15_RXIQ_VCM_1_3 = (2 << REG15_RXIQ_VCM_SHIFT);  /* 1.3V */
+constexpr uint16_t REG15_RXIQ_VCM_1_45 = (3 << REG15_RXIQ_VCM_SHIFT); /* 1.45V */
+
+class MAX2831 : public MAX283x {
+   public:
+    constexpr MAX2831(
+        spi::arbiter::Target& target)
+        : _target(target) {
+    }
+
+    void init() override;
+    void set_mode(const Mode mode) override;
+
+    void set_tx_vga_gain(const int_fast8_t db) override;
+    void set_lna_gain(const int_fast8_t db) override;
+    void set_vga_gain(const int_fast8_t db) override;
+    void set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) override;
+    void set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) override;
+
+    bool set_frequency(const rf::Frequency lo_frequency) override;
+
+    void set_rx_LO_iq_phase_calibration(const size_t v) override;
+    void set_tx_LO_iq_phase_calibration(const size_t v) override;
+
+    void set_rx_buff_vcm(const size_t v) override;
+
+    int8_t temp_sense() override;
+
+    reg_t read(const address_t reg_num) override;
+    void write(const address_t reg_num, const reg_t value) override;
+
+   private:
+    spi::arbiter::Target& _target;
+    Mode _mode{Mode::Standby};
+    std::array<uint16_t, reg_count> _regs{default_regs};
+    uint16_t _regs_dirty{0xFFFF}; /* Track which registers need to be written */
+    uint32_t _desired_lpf_bw{0};  /* Desired LPF bandwidth in Hz */
+
+    void write_reg(const uint8_t reg, const uint16_t value);
+    void set_reg_field(const uint8_t reg, const uint16_t mask, const uint16_t value);
+    uint16_t get_reg_field(const uint8_t reg, const uint16_t mask, const uint8_t shift);
+    void mark_dirty(const uint8_t reg);
+    void mark_clean(const uint8_t reg);
+    void flush_reg(const uint8_t reg);
+    void flush_dirty();
+    uint32_t set_lpf_bandwidth_internal(const uint32_t bandwidth_hz);
+};
+
+}  // namespace max2831
+
+#endif /*__MAX2831_H__*/

firmware/application/hw/rffc507x.cpp

@@ -31,6 +31,24 @@ using namespace hackrf::one;
 
 #include "hal.h"
 
+#ifdef PRALINE
+// Global debug tracking - visible to other files
+struct rffc507x_debug_t {
+    uint32_t requested_freq_mhz;
+    uint32_t calculated_vco_mhz;
+    uint32_t expected_n;
+    uint8_t expected_lodiv;
+    uint8_t expected_presc;
+    bool was_called;
+    uint32_t calc_lo_freq_mhz;     // Input to calculate()
+    uint32_t calc_vco_inside_mhz;  // VCO calculated inside calculate()
+    uint8_t calc_lodiv_log2;       // LO divider log2
+    uint8_t calc_presc_log2;       // Prescaler log2
+    uint64_t calc_n_q24;           // N in Q24 format before shift
+};
+rffc507x_debug_t rffc507x_debug_info = {0, 0, 0, 0, 0, false, 0, 0, 0, 0, 0};
+#endif
+
 namespace rffc507x {
 
 /* Empirical tests indicate no minimum reset pulse width, but the speed
@@ -96,9 +114,31 @@ constexpr size_t divider_min = 1U << divider_log2_min;
 constexpr size_t divider_max = 1U << divider_log2_max;
 
 constexpr size_t divider_log2(const rf::Frequency vco_frequency) {
+#ifdef PRALINE
+    // PRALINE FIX: Avoid N register overflow (9-bit max = 511)
+    // With 40 MHz reference:
+    // - For VCO=5400 MHz, presc=÷2: N = (5400×2)/40 = 270 ✓
+    // - For VCO=5400 MHz, presc=÷4: N = (5400×4)/40 = 540 ✗ OVERFLOW!
+    //
+    // Maximum safe VCO for ÷4 prescaler:
+    // N_max = 511, so VCO_max = (511 × 40) / 4 = 5110 MHz
+    //
+    // Use ÷4 only if VCO < 5110 MHz AND VCO > 3200 MHz
+    // Use ÷2 for VCO >= 5110 MHz to avoid overflow
+
+    constexpr rf::Frequency overflow_threshold = 5110000000ULL;  // Max VCO for ÷4
+    constexpr rf::Frequency min_presc4_freq = 3200000000ULL;     // Min VCO for ÷4
+
+    if ((vco_frequency > min_presc4_freq) && (vco_frequency < overflow_threshold)) {
+        return divider_log2_max;  // ÷4 prescaler
+    } else {
+        return divider_log2_min;  // ÷2 prescaler
+    }
+#else
     return (vco_frequency > (prescaler::divider_min * prescaler::max_frequency))
                ? prescaler::divider_log2_max
                : prescaler::divider_log2_min;
+#endif
 }
 
 } /* namespace prescaler */
@@ -121,9 +161,22 @@ struct SynthConfig {
 
         const size_t prescaler_divider_log2 = prescaler::divider_log2(vco_frequency);
 
+#ifndef PRALINE
         const uint64_t prescaled_lo_q24 = vco_frequency << (24 - prescaler_divider_log2);
+#else
+        const uint64_t prescaled_lo_q24 = vco_frequency << (24 + prescaler_divider_log2);
+#endif
         const uint64_t n_divider_q24 = prescaled_lo_q24 / reference_frequency;
 
+#ifdef PRALINE
+        // DEBUG: Track everything
+        rffc507x_debug_info.calc_lo_freq_mhz = lo_frequency / 1000000;
+        rffc507x_debug_info.calc_vco_inside_mhz = vco_frequency / 1000000;
+        rffc507x_debug_info.calc_lodiv_log2 = lo_divider_log2;
+        rffc507x_debug_info.calc_presc_log2 = prescaler_divider_log2;
+        rffc507x_debug_info.calc_n_q24 = n_divider_q24;
+#endif
+
         return {
             lo_divider_log2,
             prescaler_divider_log2,
@@ -233,6 +286,20 @@ void RFFC507x::set_mixer_current(const uint8_t value) {
 void RFFC507x::set_frequency(const rf::Frequency lo_frequency) {
     const SynthConfig synth_config = SynthConfig::calculate(lo_frequency);
 
+#ifdef PRALINE
+    // Calculate VCO frequency from LO frequency and divider
+    const size_t lo_divider = 1U << synth_config.lo_divider_log2;  // 2^lodiv_log2
+    const rf::Frequency vco_freq = lo_frequency * lo_divider;
+
+    // Track what we calculated
+    rffc507x_debug_info.requested_freq_mhz = lo_frequency / 1000000;
+    rffc507x_debug_info.calculated_vco_mhz = vco_freq / 1000000;
+    rffc507x_debug_info.expected_n = synth_config.n_divider_q24 >> 24;
+    rffc507x_debug_info.expected_lodiv = synth_config.lo_divider_log2;
+    rffc507x_debug_info.expected_presc = synth_config.prescaler_divider_log2;
+    rffc507x_debug_info.was_called = true;
+#endif
+
     /* Boost charge pump leakage if VCO frequency > 3.2GHz, indicated by
      * prescaler divider set to 4 (log2=2) instead of 2 (log2=1).
      */

firmware/application/hw/si5351.cpp

@@ -57,7 +57,15 @@ void Si5351::reset() {
     write_register(Register::CrystalInternalLoadCapacitance, 0b11010010);
     write_register(Register::FanoutEnable, 0x00);
 
+#ifndef PRALINE
     reset_plls();
+#endif
+    // NOTE: Do NOT call reset_plls() here!
+    // Multisynth registers are not yet configured at this point.
+    // Resetting PLLs with power-on default multisynth values (divider=6)
+    // causes Si5351 to output wrong frequencies (66.666 MHz instead of 8 MHz).
+    // The PLL reset should happen in init_clock_generator() AFTER multisynths
+    // are properly configured. This matches HackRF reference firmware.
 }
 
 Si5351::regvalue_t Si5351::read_register(const uint8_t reg) {
@@ -93,7 +101,16 @@ void Si5351::set_ms_frequency(
         .r_div = r_div,
     };
     const auto regs = ms.reg(ms_number);
+
+#ifdef PRALINE
+    /* PRALINE: Use single-byte writes - multi-byte I2C writes seem to fail */
+    const uint8_t base_reg = regs[0];
+    for (size_t i = 1; i < regs.size(); i++) {
+        write_register(base_reg + i - 1, regs[i]);
+    }
+#else
     write(regs);
+#endif
 }
 
 } /* namespace si5351 */

firmware/application/hw/si5351.hpp

@@ -361,7 +361,16 @@ class Si5351 {
     }
 
     void wait_for_device_ready() {
+#ifndef PRALINE
         while (device_status() & 0x80);
+#else
+        // Add timeout to prevent infinite loop if I2C communication fails
+        // (e.g., on PRALINE hardware with different configuration)
+        uint32_t timeout = 100000;
+        while ((device_status() & 0x80) && (timeout > 0)) {
+            timeout--;
+        }
+#endif
     }
 
     bool plla_loss_of_signal() {
@@ -377,10 +386,15 @@ class Si5351 {
     }
 
     void reset_plls() {
+#ifndef PRALINE
         // Datasheet recommends value 0xac, though the low nibble bits are not defined in AN619.
         write_register(Register::PLLReset, 0xac);
+#else
+        // Reset both PLLA and PLLB. Use 0xA0 to match HackRF reference firmware.
+        // The low nibble bits are reserved/undefined in AN619.
+        write_register(Register::PLLReset, 0xa0);
+#endif
     }
-
     regvalue_t read_register(const uint8_t reg);
 
     template <size_t N>
@@ -397,6 +411,18 @@ class Si5351 {
         write(config.reg(ms_number));
     }
 
+#ifdef PRALINE
+    /* Write multisynth config using single-byte writes for debugging */
+    void write_ms_single_byte(const size_t ms_number, const MultisynthFractional& config) {
+        const auto regs = config.reg(ms_number);
+        // regs[0] is the base register address, regs[1-8] are the data bytes
+        const uint8_t base_reg = regs[0];
+        for (size_t i = 1; i < regs.size(); i++) {
+            write_register(base_reg + i - 1, regs[i]);
+        }
+    }
+#endif
+
     void set_ms_frequency(
         const size_t ms_number,
         const uint32_t frequency,
@@ -480,7 +506,6 @@ class Si5351 {
                                                    }});
     }
 };
-
 }  // namespace si5351
 
 #endif /*__SI5351_H__*/

firmware/application/hw/spi_arbiter.hpp

@@ -46,6 +46,14 @@ class Arbiter {
         _bus.transfer(data, count);
     }
 
+#ifdef PRALINE
+    /* Invalidate cached config - forces reconfiguration on next transfer.
+     * Call this after directly manipulating SSP registers (e.g., FPGA access). */
+    void invalidate() {
+        _config = nullptr;
+    }
+#endif
+
    private:
     SPI& _bus;
     const SPIConfig* _config;

firmware/application/irq_controls.cpp

@@ -194,8 +194,12 @@ void timer0_callback(GPTDriver* const) {
     if (encoder_update(switches_raw) || encoder_read())
         event_mask |= EVT_MASK_ENCODER;
 
-    /* Signal event loop */
+        /* Signal event loop */
+#ifdef PRALINE
+    if (event_mask && thread_controls_event) {
+#else
     if (event_mask) {
+#endif
         chSysLockFromIsr();
         chEvtSignalI(thread_controls_event, event_mask);
         chSysUnlockFromIsr();
@@ -227,8 +231,13 @@ void controls_init() {
     gptStart(&GPTD1, &timer0_config);
     gptStartContinuous(&GPTD1, timer0_match_count);
 
+#ifdef PRALINE
     // Enable repeat for directional switches only
     for (auto i = Switch::Right; i <= Switch::Up; incr(i))
+#else
+    // Enable repeat for directional and Select switches only
+    for (auto i = Switch::Right; i <= Switch::Sel; incr(i))
+#endif
         switch_debounce[toUType(i)].enable_repeat();
 }
 
@@ -250,6 +259,22 @@ SwitchesState get_switches_state() {
     return result;
 }
 
+/* Gets the repeat enabled state for all the switches. */
+SwitchesState get_switches_repeat_config() {
+    SwitchesState result;
+
+    for (size_t i = 0; i < result.size(); i++)
+        result[i] = switch_debounce[i].get_repeat_enabled();
+
+    return result;
+}
+
+/* Configures which switches support repeat.*/
+void set_switches_repeat_config(SwitchesState switch_config) {
+    for (size_t i = 0; i < switch_config.size(); i++)
+        switch_debounce[i].set_enable_repeat(switch_config[i]);
+}
+
 /* Gets the long press enabled state for all the switches. */
 SwitchesState get_switches_long_press_config() {
     SwitchesState result;

firmware/application/irq_controls.hpp

@@ -48,6 +48,8 @@ uint8_t swizzled_switches();
 SwitchesState get_switches_state();
 EncoderPosition get_encoder_position();
 touch::Frame get_touch_frame();
+SwitchesState get_switches_repeat_config();
+void set_switches_repeat_config(SwitchesState switch_config);
 
 SwitchesState get_switches_long_press_config();
 void set_switches_long_press_config(SwitchesState switch_config);

firmware/application/irq_lcd_frame.cpp

@@ -52,10 +52,17 @@ extern "C" {
 
 CH_IRQ_HANDLER(PIN_INT4_IRQHandler) {
     CH_IRQ_PROLOGUE();
-
+#ifdef PRALINE
+    if (thread_lcd_frame_event) {
+        chSysLockFromIsr();
+        chEvtSignalI(thread_lcd_frame_event, EVT_MASK_LCD_FRAME_SYNC);
+        chSysUnlockFromIsr();
+    }
+#else
     chSysLockFromIsr();
     chEvtSignalI(thread_lcd_frame_event, EVT_MASK_LCD_FRAME_SYNC);
     chSysUnlockFromIsr();
+#endif
 
     LPC_GPIO_INT->IST = (1U << 4);
 

firmware/application/irq_rtc.cpp

@@ -40,10 +40,17 @@ extern "C" {
 
 CH_IRQ_HANDLER(RTC_IRQHandler) {
     CH_IRQ_PROLOGUE();
-
+#ifdef PRALINE
+    if (thread_rtc_event) {
+        chSysLockFromIsr();
+        chEvtSignalI(thread_rtc_event, EVT_MASK_RTC_TICK);
+        chSysUnlockFromIsr();
+    }
+#else
     chSysLockFromIsr();
     chEvtSignalI(thread_rtc_event, EVT_MASK_RTC_TICK);
     chSysUnlockFromIsr();
+#endif
 
     rtc::interrupt::clear_all();
 

firmware/application/log_file.cpp

@@ -38,3 +38,11 @@ Optional<File::Error> LogFile::write_raw(const std::string& message) {
     }
     return error;
 }
+
+Optional<File::Error> LogFile::write_raw_no_newline(const std::string& message) {
+    auto result_s = file.write(message.c_str(), message.size());
+    if (!result_s.is_error()) {
+        file.sync();
+    }
+    return {result_s.error()};
+}

firmware/application/log_file.hpp

@@ -40,6 +40,7 @@ class LogFile {
     Optional<File::Error> write_entry(const std::string& entry);
     Optional<File::Error> write_entry(const rtc::RTC& datetime, const std::string& entry);
     Optional<File::Error> write_raw(const std::string& message);
+    Optional<File::Error> write_raw_no_newline(const std::string& message);
 
    private:
     File file{};

firmware/application/main.cpp

@@ -187,7 +187,7 @@ int main(void) {
             lcd_frame_sync_configure();
             rtc_interrupt_enable();
 
-            Theme::SetTheme((Theme::ThemeId)portapack::persistent_memory::ui_theme_id());  // load theme
+            Theme::SetTheme((Theme::ThemeId)portapack::persistent_memory::ui_theme_id());
 
             event_loop();
 

firmware/application/portapack.cpp

@@ -56,6 +56,12 @@ using asahi_kasei::ak4951::AK4951;
 #include "i2cdevmanager.hpp"
 #include "battery.hpp"
 
+#ifndef PRALINE
+extern "C" {
+#include "platform_detect.h"
+}
+#endif
+
 namespace portapack {
 
 const char* init_error = nullptr;
@@ -337,14 +343,37 @@ static void set_cpu_clock_speed() {
      */
 
     /* Step into the 90-110MHz M4 clock range */
+#ifdef PRALINE
+    /* PRALINE: Enable and use 12MHz XTAL directly (no GP_CLKIN from Si5351) */
+
+    /* Step 1: Enable the crystal oscillator */
+    LPC_CGU->XTAL_OSC_CTRL.ENABLE = 0;  // 0 = enable (active low)
+    LPC_CGU->XTAL_OSC_CTRL.HF = 0;      // 0 = low frequency mode (1-20MHz)
+
+    /* Step 2: Wait for oscillator to stabilize (~250us at IRC speed) */
+    volatile uint32_t delay = 3000;  // ~250us at 12MHz IRC
+    while (delay--);
+
+    /* Step 3: Configure PLL1 from XTAL
+     *   Fclkin = 12M, /N=1 = 12M, Fcco = 12M * 17 = 204M
+     *   Fclk = Fcco / (2*(P=1)) = 102M
+     */
+    cgu::pll1::ctrl({
+        .pd = 1,
+        .bypass = 0,
+        .fbsel = 0,
+        .direct = 0,
+        .psel = 0,
+        .autoblock = 1,
+        .nsel = 0,   // N = 1
+        .msel = 16,  // M = 17, so 12MHz * 17 = 204MHz
+        .clk_sel = cgu::CLK_SEL::XTAL,
+    });
+#else
     /* OG:
-     * 	Fclkin = 40M
-     * 		/N=2 = 20M = PFDin
-     * 	Fcco = PFDin * (M=10) = 200M
+     * 	Fclkin = 40M, /N=2 = 20M, Fcco = 20M * 10 = 200M
      * r9:
-     * 	Fclkin = 10M
-     * 		/N=1 = 10M = PFDin
-     * 	Fcco = PFDin * (M=20) = 200M
+     * 	Fclkin = 10M, /N=1 = 10M, Fcco = 10M * 20 = 200M
      * Fclk = Fcco / (2*(P=1)) = 100M
      */
     cgu::pll1::ctrl({
@@ -358,20 +387,41 @@ static void set_cpu_clock_speed() {
         .msel = hackrf_r9 ? 19UL : 9UL,
         .clk_sel = cgu::CLK_SEL::GP_CLKIN,
     });
+#endif
 
     cgu::pll1::enable();
+#ifndef PRALINE
     while (!cgu::pll1::is_locked());
 
     set_clock_config(clock_config_pll1_step);
-
     /* Delay >50us at 90-110MHz clock speed */
     volatile uint32_t delay = 1400;
     while (delay--);
-
     set_clock_config(clock_config_pll1);
 
     /* Remove /2P divider from PLL1 output to achieve full speed */
     cgu::pll1::direct();
+#else
+    // Wait for PLL1 to lock with timeout
+    {
+        uint32_t timeout = 100000;
+        while (!cgu::pll1::is_locked() && timeout > 0) {
+            timeout--;
+        }
+    }
+
+    if (cgu::pll1::is_locked()) {
+        set_clock_config(clock_config_pll1_step);
+
+        /* Delay >50us at 90-110MHz clock speed */
+        volatile uint32_t delay = 1400;
+        while (delay--);
+        set_clock_config(clock_config_pll1);
+
+        /* Remove /2P divider from PLL1 output to achieve full speed */
+        cgu::pll1::direct();
+    }
+#endif
 }
 
 static void draw_splash_screen_icon(int16_t n, const ui::Bitmap& bitmap) {
@@ -505,6 +555,13 @@ init_status_t init() {
 
     chThdSleepMilliseconds(100);
 
+#ifndef PRALINE
+    detect_hardware_platform();
+    finalize_detect_hardware_platform();
+
+    chThdSleepMilliseconds(100);
+#endif
+
     configure_pins_portapack();
 
     portapack::io.init();
@@ -534,11 +591,11 @@ init_status_t init() {
     cgu::pll1::disable();
 
     set_cpu_clock_speed();
-
     /* sample max: 1023 sample_t AKA uint16_t
      * touch_sensitivity: range: 1 to 128
      * threshold range: 1023/1 to 1023/128  =  1023 to 8
      */
+
     touch_threshold = portapack::persistent_memory::touchscreen_threshold();
 
     if (lcd_fast_setup)
@@ -561,8 +618,10 @@ init_status_t init() {
     chThdSleepMilliseconds(10);
 
     clock_manager.set_reference_ppb(persistent_memory::correction_ppb());
+
     clock_manager.enable_if_clocks();
     clock_manager.enable_codec_clocks();
+
     radio::init();
 
     sdcStart(&SDCD1, nullptr);
@@ -574,12 +633,18 @@ init_status_t init() {
         draw_splash_screen_icon(2, ui::bitmap_icon_sd);
 
     init_status_t return_code = init_status_t::INIT_SUCCESS;
+#ifndef PRALINE
+    // HackRF One uses CPLD - load it via JTAG
     if (!hackrf::cpld::load_sram()) {
         if (lcd_fast_setup)
             chDbgPanic("HACKRF CPLD FAILED");
 
         return_code = init_status_t::INIT_HACKRF_CPLD_FAILED;
     }
+#else
+    // HackRF Pro (PRALINE) uses FPGA - already loaded in board.cpp __early_init()
+    // via fpga_bridge_init(), so nothing to do here
+#endif
 
     if (lcd_fast_setup)
         draw_splash_screen_icon(3, ui::bitmap_icon_hackrf);
@@ -592,6 +657,7 @@ init_status_t init() {
     chThdSleepMilliseconds(10);
 
     audio::init(portapack_audio_codec());
+
     battery::BatteryManagement::set_calc_override(persistent_memory::ui_override_batt_calc());
     i2cdev::I2CDevManager::init();
 

firmware/application/protocols/aprs.cpp

@@ -31,20 +31,67 @@ using namespace ax25;
 
 namespace aprs {
 
-void make_aprs_frame(const char* src_address, const uint32_t src_ssid, const char* dest_address, const uint32_t dest_ssid, const std::string& payload) {
+void make_aprs_frame(const char* src_address, const uint32_t src_ssid, const char* dest_address, const uint32_t dest_ssid, const std::string& payload, const std::string& path) {
     AX25Frame frame;
 
     char address[14] = {0};
+    memset(address, ' ', 14);
 
-    memcpy(&address[0], dest_address, 6);
-    memcpy(&address[7], src_address, 6);
+    size_t dest_len = strlen(dest_address);
+    if (dest_len > 6) dest_len = 6;
+    memcpy(&address[0], dest_address, dest_len);
+    size_t src_len = strlen(src_address);
+    if (src_len > 6) src_len = 6;
+    memcpy(&address[7], src_address, src_len);
     // euquiq: According to ax.25 doc section 2.2.13.x.x and 2.4.1.2
-    //  SSID need bits 5.6 set, so later when shifted it will end up being 011xxxx0 (xxxx = SSID number)
-    //  Notice that if need to signal usage of AX.25 V2.0, (dest_ssid | 112); (MSb will need to be set at the end)
-    address[6] = (dest_ssid | 48);
-    address[13] = (src_ssid | 48);
+    // SSID need bits 5.6 set, so later when shifted it will end up being 011xxxx0 (xxxx = SSID number)
+    // Notice that if need to signal usage of AX.25 V2.0, (dest_ssid | 112); (MSb will need to be set at the end)
+    address[6] = (dest_ssid | 0x30);
+    address[13] = (src_ssid | 0x30);
 
-    frame.make_ui_frame(address, 0x03, protocol_id_t::NO_LAYER3, payload);
+    // fix path ssid bits. the result will be the same as above
+    std::string fixed_path = "";
+
+    const char* p = path.c_str();
+
+    while (*p) {
+        while (*p == ' ') p++;
+        if (!*p) break;
+
+        char call[6] = {' ', ' ', ' ', ' ', ' ', ' '};
+        int idx = 0;
+
+        while (*p && *p != '-' && *p != ',') {
+            if (*p != ' ') {
+                if (idx < 6) {
+                    char c = *p;
+                    if (c >= 'a' && c <= 'z') c -= 32;
+                    call[idx++] = c;
+                }
+            }
+            p++;
+        }
+
+        int ssid = 0;
+        if (*p == '-') {
+            p++;
+            while (*p == ' ') p++;
+            while (*p >= '0' && *p <= '9') {
+                ssid = ssid * 10 + (*p - '0');
+                p++;
+            }
+        }
+
+        if (ssid >= 0 && ssid <= 15) {
+            for (int i = 0; i < 6; i++) fixed_path += call[i];
+            fixed_path += (char)(ssid | 0x30);
+        }
+
+        while (*p && *p != ',') p++;
+        if (*p == ',') p++;
+    }
+
+    frame.make_ui_frame(address, 0x03, protocol_id_t::NO_LAYER3, payload, fixed_path);
 }
 
 } /* namespace aprs */

firmware/application/protocols/aprs.hpp

@@ -33,7 +33,8 @@ void make_aprs_frame(
     const uint32_t src_ssid,
     const char* dest_address,
     const uint32_t dest_ssid,
-    const std::string& payload);
+    const std::string& payload,
+    const std::string& path = "");
 
 } /* namespace aprs */
 

firmware/application/protocols/ax25.cpp

@@ -26,13 +26,16 @@
 
 namespace ax25 {
 
-void AX25Frame::make_extended_field(char* const data, size_t length) {
+void AX25Frame::make_extended_field(char* const data, size_t length, bool is_last) {
     size_t i = 0;
 
     for (i = 0; i < length - 1; i++)
         add_data(data[i] << 1);
 
-    add_data((data[i] << 1) | 1);
+    if (is_last)
+        add_data((data[i] << 1) | 1);
+    else
+        add_data((data[i] << 1));
 }
 
 void AX25Frame::NRZI_add_bit(const uint32_t bit) {
@@ -92,7 +95,7 @@ void AX25Frame::add_checksum() {
     add_byte(checksum >> 8, false, false);
 }
 
-void AX25Frame::make_ui_frame(char* const address, const uint8_t control, const uint8_t protocol, const std::string& info) {
+void AX25Frame::make_ui_frame(char* const address, const uint8_t control, const uint8_t protocol, const std::string& info, const std::string& path) {
     size_t i;
 
     bb_data_ptr = (uint16_t*)shared_memory.bb_data.data;
@@ -103,22 +106,27 @@ void AX25Frame::make_ui_frame(char* const address, const uint8_t control, const
     ones_counter = 0;
     crc_ccitt.reset();
 
-    add_flag();
-    add_flag();
-    add_flag();
-    add_flag();
+    add_flag();  // 0x73
+    add_flag();  // 0x73
+    add_flag();  // 0x73
+    add_flag();  // 0x73
 
-    make_extended_field(address, 14);
-    add_data(control);
-    add_data(protocol);
+    // path must not contain the - character! just the callsign and SSID next to each other
+    bool has_path = (path.size() > 0 && path.size() <= 63 && path.size() % 7 == 0);
+    make_extended_field(address, 14, !has_path);
+    if (has_path) {
+        make_extended_field(const_cast<char*>(path.data()), path.size(), true);
+    }
+    add_data(control);   // 0x03
+    add_data(protocol);  // 0xf0
 
     for (i = 0; i < info.size(); i++)
         add_data(info[i]);
 
-    add_checksum();
+    add_checksum();  // fcs
 
-    add_flag();
-    add_flag();
+    add_flag();  // 0x73
+    add_flag();  // 0x73
 
     flush();
 }

firmware/application/protocols/ax25.hpp

@@ -43,11 +43,11 @@ enum protocol_id_t {
 
 class AX25Frame {
    public:
-    void make_ui_frame(char* const address, const uint8_t control, const uint8_t protocol, const std::string& info);
+    void make_ui_frame(char* const address, const uint8_t control, const uint8_t protocol, const std::string& info, const std::string& path = "");
 
    private:
     void NRZI_add_bit(const uint32_t bit);
-    void make_extended_field(char* const data, size_t length);
+    void make_extended_field(char* const data, size_t length, bool is_last = false);
     void add_byte(uint8_t byte, bool is_flag, bool is_data);
     void add_data(uint8_t byte);
     void add_checksum();

firmware/application/radio.cpp

@@ -26,6 +26,14 @@
 #include "rffc507x.hpp"
 #include "max2837.hpp"
 #include "max2839.hpp"
+
+#ifdef PRALINE
+#include "max2831.hpp"
+extern "C" {
+#include "fpga_bridge.h"
+}
+#endif
+
 #include "max5864.hpp"
 #include "baseband_cpld.hpp"
 
@@ -42,6 +50,10 @@ using namespace hackrf::one;
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
 
+#include "hal.h"  // For LPC_SGPIO
+
+#include <array>
+
 /* Direct access to the radio. Setting values incorrectly can damage
  * the device. Applications should use ReceiverModel or TransmitterModel
  * instead of calling these functions directly. */
@@ -56,6 +68,18 @@ static constexpr uint32_t ssp_scr(
     return static_cast<uint8_t>(pclk_f / cpsr / spi_f - 1);
 }
 
+#ifdef PRALINE
+/* MAX2831 uses 9-bit SPI transfers */
+static constexpr SPIConfig ssp_config_max283x = {
+    .end_cb = NULL,
+    .ssport = gpio_max283x_select.port(),
+    .sspad = gpio_max283x_select.pad(),
+    .cr0 =
+        CR0_CLOCKRATE(ssp_scr(ssp1_pclk_f, ssp1_cpsr, max283x_spi_f) + 3) | CR0_FRFSPI | CR0_DSS9BIT,
+    .cpsr = ssp1_cpsr,
+};
+#else
+/* MAX2837/MAX2839 use 16-bit SPI transfers */
 static constexpr SPIConfig ssp_config_max283x = {
     .end_cb = NULL,
     .ssport = gpio_max283x_select.port(),
@@ -64,6 +88,7 @@ static constexpr SPIConfig ssp_config_max283x = {
         CR0_CLOCKRATE(ssp_scr(ssp1_pclk_f, ssp1_cpsr, max283x_spi_f) + 3) | CR0_FRFSPI | CR0_DSS16BIT,
     .cpsr = ssp1_cpsr,
 };
+#endif
 
 static constexpr SPIConfig ssp_config_max5864 = {
     .end_cb = NULL,
@@ -89,6 +114,9 @@ rffc507x::RFFC507x first_if;
 max283x::MAX283x* second_if;
 max2837::MAX2837 second_if_max2837{ssp1_target_max283x};
 max2839::MAX2839 second_if_max2839{ssp1_target_max283x};
+#ifdef PRALINE
+max2831::MAX2831 second_if_max2831{ssp1_target_max283x};
+#endif
 static max5864::MAX5864 baseband_codec{ssp1_target_max5864};
 static baseband::CPLD baseband_cpld;
 
@@ -97,19 +125,46 @@ static rf::Direction direction{rf::Direction::Receive};
 static bool baseband_invert = false;
 static bool mixer_invert = false;
 
+#ifdef PRALINE
+static rf::Direction cached_direction = rf::Direction::Receive;
+static bool cached_rf_amp = false;
+static int_fast8_t cached_lna_gain = 0;
+static int_fast8_t cached_vga_gain = 0;
+#endif
+
 void init() {
+#ifdef PRALINE
+    /* PRALINE uses MAX2831 transceiver */
+    second_if = (max283x::MAX283x*)&second_if_max2831;
+#else
     if (hackrf_r9) {
         gpio_r9_not_ant_pwr.write(1);
         gpio_r9_not_ant_pwr.output();
     }
-    rf_path.init();
-    first_if.init();
     second_if = hackrf_r9
                     ? (max283x::MAX283x*)&second_if_max2839
                     : (max283x::MAX283x*)&second_if_max2837;
+#endif
+    rf_path.init();
+    first_if.init();
     second_if->init();
     baseband_codec.init();
+#ifndef PRALINE
+    /* HackRF One uses CPLD for Q inversion control.
+     * PRALINE uses FPGA and the pin (P2_3) is used for LCD_TE on H4M. */
     baseband_cpld.init();
+#else
+    /* Initialize FPGA registers - DC_BLOCK must be enabled for RX */
+    // debug::fpga::init();
+    fpga_debug_register_write(1, 0x01);  // DC_BLOCK=1, QUARTER_SHIFT=0, Q_INVERT=0
+    fpga_debug_register_write(2, 0x00);  // RX_DECIM=0 (no decimation for testing)
+    fpga_debug_register_write(3, 0x00);  // TX_CTRL=0
+    fpga_debug_register_write(4, 0x00);  // TX_INTRP=0
+    fpga_debug_register_write(5, 0x00);  // TX_PSTEP=0
+
+    ssp1_arbiter.invalidate();
+    chThdSleepMilliseconds(10);  // Let FPGA registers settle
+#endif
 }
 
 void set_direction(const rf::Direction new_direction) {
@@ -120,6 +175,10 @@ void set_direction(const rf::Direction new_direction) {
     // Deleting that load_sram_no_verify() (or the original , load_sram() ), solves random TX swap I/Q  problem in H1R1 , others OK- (and no side effects to all).
     // hackrf::cpld::load_sram_no_verify();  // After commit "removed the use of the hackrf cpld eeprom #1732", in a H1R1,  Mic App wrong SSB TX with random USB/LSB change.
 
+#ifdef PRALINE
+    cached_direction = new_direction;  // Track state for debug and potentially other purposes.
+#endif
+
     direction = new_direction;
 
     if (hackrf_r9) {
@@ -143,7 +202,18 @@ void set_direction(const rf::Direction new_direction) {
          */
         baseband_invert = false;
     }
+#ifndef PRALINE
     baseband_cpld.set_invert(mixer_invert ^ baseband_invert);
+#else
+    // Praline: Control Q inversion via FPGA register
+    // Assuming register 1 bit 1 controls Q inversion
+    uint8_t ctrl_reg = 0x01;  // DC_BLOCK enabled
+    if (mixer_invert ^ baseband_invert) {
+        ctrl_reg |= 0x02;  // Set Q_INVERT bit
+    }
+    fpga_debug_register_write(1, ctrl_reg);
+    ssp1_arbiter.invalidate();
+#endif
 
     second_if->set_mode((direction == rf::Direction::Transmit) ? max283x::Mode::Transmit : max283x::Mode::Receive);
     rf_path.set_direction(direction);
@@ -154,6 +224,16 @@ void set_direction(const rf::Direction new_direction) {
         led_rx.on();
     else
         led_tx.on();
+
+    // #ifdef PRALINE
+    //  Try with Q inversion OFF
+    // fpga_debug_register_write(1, 0x01);  // DC_BLOCK=1, Q_INVERT=0
+    // ssp1_arbiter.invalidate();
+
+    // If no signals, try with Q inversion ON
+    // fpga_debug_register_write(1, 0x03);  // DC_BLOCK=1, Q_INVERT=1
+    // ssp1_arbiter.invalidate();
+    // #endif
 }
 
 bool set_tuning_frequency(const rf::Frequency frequency) {
@@ -196,7 +276,9 @@ bool set_tuning_frequency(const rf::Frequency frequency) {
 
         rf_path.set_band(tuning_config.rf_path_band);
         mixer_invert = tuning_config.mixer_invert;
+#ifndef PRALINE
         baseband_cpld.set_invert(mixer_invert ^ baseband_invert);
+#endif
 
         return result_second_if;
     } else {
@@ -205,21 +287,23 @@ bool set_tuning_frequency(const rf::Frequency frequency) {
 }
 
 void set_rf_amp(const bool rf_amp) {
+#ifdef PRALINE
+    cached_rf_amp = rf_amp;  // Track state for debug and potentialy other purposes.
+#endif
     rf_path.set_rf_amp(rf_amp);
-
-    if (direction == rf::Direction::Transmit) {
-        if (rf_amp)
-            led_tx.on();
-        else
-            led_tx.off();
-    }
 }
 
 void set_lna_gain(const int_fast8_t db) {
+#ifdef PRALINE
+    cached_lna_gain = db;  // Track state for debug and potentially other purposes.
+#endif
     second_if->set_lna_gain(db);
 }
 
 void set_vga_gain(const int_fast8_t db) {
+#ifdef PRALINE
+    cached_vga_gain = db;  // Track state for debug and potentially other purposes.
+#endif
     second_if->set_vga_gain(db);
 }
 
@@ -242,11 +326,17 @@ void set_baseband_rate(const uint32_t rate) {
 
 void set_antenna_bias(const bool on) {
     /* Pull MOSFET gate low to turn on antenna bias. */
+#ifdef PRALINE
+    // Praline: P2_12 = GPIO1[12], ANT_BIAS_EN_N (active LOW)
+    LPC_GPIO->CLR[1] = on ? (1 << 12) : 0;
+    LPC_GPIO->SET[1] = on ? 0 : (1 << 12);
+#else
     if (hackrf_r9) {
         gpio_r9_not_ant_pwr.write(on ? 0 : 1);
     } else {
         first_if.set_gpo1(on ? 0 : 1);
     }
+#endif
 }
 
 void set_tx_max283x_iq_phase_calibration(const size_t v) {
@@ -282,8 +372,32 @@ void disable() {
     led_tx.off();
 }
 
+#ifdef PRALINE
+void invalidate_spi_config() {
+    ssp1_arbiter.invalidate();
+}
+#endif
+
 namespace debug {
 
+#ifdef PRALINE
+rf::Direction get_cached_direction() {
+    return cached_direction;
+}
+
+bool get_cached_rf_amp() {
+    return cached_rf_amp;
+}
+
+int_fast8_t get_cached_lna_gain() {
+    return cached_lna_gain;
+}
+
+int_fast8_t get_cached_vga_gain() {
+    return cached_vga_gain;
+}
+#endif
+
 namespace first_if {
 
 uint32_t register_read(const size_t register_number) {
@@ -294,6 +408,48 @@ void register_write(const size_t register_number, uint32_t value) {
     radio::first_if.write(register_number, value);
 }
 
+#ifdef PRALINE
+extern "C" {
+extern struct rffc507x_debug_t {
+    uint32_t requested_freq_mhz;
+    uint32_t calculated_vco_mhz;
+    uint32_t expected_n;
+    uint8_t expected_lodiv;
+    uint8_t expected_presc;
+    bool was_called;
+    uint32_t calc_lo_freq_mhz;
+    uint32_t calc_vco_inside_mhz;
+    uint8_t calc_lodiv_log2;
+    uint8_t calc_presc_log2;
+    uint64_t calc_n_q24;
+} rffc507x_debug_info;
+}
+
+/*struct TuningInfo {
+    uint32_t requested_freq_mhz;
+    uint32_t expected_n;
+    uint8_t expected_lodiv;
+    uint8_t expected_presc;
+    bool was_called;
+};*/
+
+TuningInfo get_tuning_info() {
+    return {
+        rffc507x_debug_info.requested_freq_mhz,
+        rffc507x_debug_info.calculated_vco_mhz,
+        rffc507x_debug_info.expected_n,
+        rffc507x_debug_info.expected_lodiv,
+        rffc507x_debug_info.expected_presc,
+        rffc507x_debug_info.was_called,
+        rffc507x_debug_info.calc_lo_freq_mhz,
+        rffc507x_debug_info.calc_vco_inside_mhz,
+        rffc507x_debug_info.calc_lodiv_log2,
+        rffc507x_debug_info.calc_presc_log2,
+        rffc507x_debug_info.calc_n_q24,
+    };
+}
+#endif
+
 } /* namespace first_if */
 
 namespace second_if {
@@ -312,6 +468,73 @@ int8_t temp_sense() {
 
 } /* namespace second_if */
 
+#ifdef PRALINE
+namespace fpga {
+
+/* Use fpga_bridge.c functions for FPGA register access.
+ * These properly switch SPI mode between iCE40 (Mode 3, 8-bit)
+ * and MAX2831 (Mode 0, 9-bit). After each access, we must
+ * invalidate the SPI arbiter's cached config since fpga_bridge.c
+ * modifies SSP1 registers directly. */
+
+uint32_t register_read(const size_t register_number) {
+    uint32_t result = fpga_debug_register_read(static_cast<uint8_t>(register_number));
+    ssp1_arbiter.invalidate();  // Force arbiter to reconfigure on next transfer
+    return result;
+}
+
+void register_write(const size_t register_number, uint32_t value) {
+    fpga_debug_register_write(static_cast<uint8_t>(register_number), static_cast<uint8_t>(value));
+    ssp1_arbiter.invalidate();  // Force arbiter to reconfigure on next transfer
+}
+
+void init() {
+    // Initialize FPGA registers after bitstream load
+    // DC_BLOCK (bit 0) must be enabled for RX to work
+    fpga_debug_register_write(1, 0x01);  // CTRL: DC_BLOCK=1
+    fpga_debug_register_write(2, 0x00);  // RX_DECIM: no decimation
+    fpga_debug_register_write(3, 0x00);  // TX_CTRL: NCO disabled
+    fpga_debug_register_write(4, 0x00);  // TX_INTRP: no interpolation
+    fpga_debug_register_write(5, 0x00);  // TX_PSTEP: zero phase step
+    ssp1_arbiter.invalidate();           // Force arbiter to reconfigure on next transfer
+}
+
+} /* namespace fpga */
+#endif
+
+namespace sgpio {
+
+/* SGPIO register map for debug viewing
+ * We expose key registers for diagnosing data flow issues.
+ * Register numbers map to:
+ * 0: CTRL_ENABLE   - Which slices are enabled
+ * 1: GPIO_INREG    - GPIO input register (data pins state)
+ * 2: GPIO_OUTREG   - GPIO output register (direction, disable, etc)
+ * 3: GPIO_OENREG   - GPIO output enable register
+ * 4: STATUS_1      - Exchange interrupt status (slice A = bit 0)
+ * 5: REG_SS[0]     - Shadow register slice A (current sample data)
+ */
+uint32_t register_read(const size_t register_number) {
+    switch (register_number) {
+        case 0:
+            return LPC_SGPIO->CTRL_ENABLE;
+        case 1:
+            return LPC_SGPIO->GPIO_INREG;
+        case 2:
+            return LPC_SGPIO->GPIO_OUTREG;
+        case 3:
+            return LPC_SGPIO->GPIO_OENREG;
+        case 4:
+            return LPC_SGPIO->STATUS_1;
+        case 5:
+            return LPC_SGPIO->REG_SS[0];
+        default:
+            return 0xFFFFFFFF;
+    }
+}
+
+} /* namespace sgpio */
+
 } /* namespace debug */
 
 } /* namespace radio */

firmware/application/radio.hpp

@@ -62,6 +62,10 @@ void set_rx_max283x_iq_phase_calibration(const size_t v);
 // void configure(Configuration configuration);
 void disable();
 
+#ifdef PRALINE
+void invalidate_spi_config();
+#endif
+
 namespace debug {
 
 namespace first_if {
@@ -69,6 +73,24 @@ namespace first_if {
 uint32_t register_read(const size_t register_number);
 void register_write(const size_t register_number, uint32_t value);
 
+#ifdef PRALINE
+struct TuningInfo {
+    uint32_t requested_freq_mhz;
+    uint32_t calculated_vco_mhz;
+    uint32_t expected_n;
+    uint8_t expected_lodiv;
+    uint8_t expected_presc;
+    bool was_called;
+    uint32_t calc_lo_freq_mhz;
+    uint32_t calc_vco_inside_mhz;
+    uint8_t calc_lodiv_log2;
+    uint8_t calc_presc_log2;
+    uint64_t calc_n_q24;
+};
+
+TuningInfo get_tuning_info();
+#endif
+
 } /* namespace first_if */
 
 namespace second_if {
@@ -81,6 +103,28 @@ int8_t temp_sense();
 
 } /* namespace second_if */
 
+#ifdef PRALINE
+namespace fpga {
+
+uint32_t register_read(const size_t register_number);
+void register_write(const size_t register_number, uint32_t value);
+void init();
+
+} /* namespace fpga */
+
+/* State tracking - GPIO pins are write-only so we cache last known state */
+rf::Direction get_cached_direction();
+bool get_cached_rf_amp();
+int_fast8_t get_cached_lna_gain();
+int_fast8_t get_cached_vga_gain();
+#endif
+
+namespace sgpio {
+
+uint32_t register_read(const size_t register_number);
+
+} /* namespace sgpio */
+
 } /* namespace debug */
 
 } /* namespace radio */

firmware/application/receiver_model.cpp

@@ -34,6 +34,12 @@
 #include "dsp_iir_config.hpp"
 #include "utility.hpp"
 
+#ifdef PRALINE
+extern "C" {
+#include "fpga_bridge.h"
+}
+#endif
+
 using namespace hackrf::one;
 using namespace portapack;
 
@@ -252,8 +258,6 @@ void ReceiverModel::enable() {
 
     // TODO: maybe not the perfect place for this, but it's reasonable.
     update_headphone_volume();
-
-    led_rx.on();
 }
 
 void ReceiverModel::disable() {
@@ -262,7 +266,6 @@ void ReceiverModel::disable() {
     // TODO: Responsibility for enabling/disabling the radio is muddy.
     // Some happens in ReceiverModel, some inside radio namespace.
     radio::disable();
-    led_rx.off();
 }
 
 void ReceiverModel::initialize() {
@@ -306,7 +309,20 @@ int32_t ReceiverModel::tuning_offset() {
 
 void ReceiverModel::update_tuning_frequency() {
     // TODO: use positive offset if freq < offset.
-    radio::set_tuning_frequency(target_frequency() + hidden_offset + tuning_offset());
+    if (enabled_) {
+        radio::set_tuning_frequency(target_frequency() + hidden_offset + tuning_offset());
+
+#ifdef PRALINE
+        /* Praline: Must re-apply baseband filter after frequency change
+         * Reference: hackrf_usb radio.c radio_set_frequency()
+         *
+         * Different frequency ranges may use different quarter-shift modes,
+         * which affects the required LPF bandwidth. For now we just
+         * recalculate the filter to be safe.
+         */
+        update_baseband_bandwidth();
+#endif
+    }
 }
 
 void ReceiverModel::set_hidden_offset(rf::Frequency offset) {
@@ -315,7 +331,28 @@ void ReceiverModel::set_hidden_offset(rf::Frequency offset) {
 }
 
 void ReceiverModel::update_baseband_bandwidth() {
-    radio::set_baseband_filter_bandwidth_rx(baseband_bandwidth());
+    if (enabled_) {
+#ifdef PRALINE
+        /* Praline: LPF bandwidth calculation
+         * Reference: hackrf_usb radio.c radio_set_filter()
+         *
+         * LPF = (sample_rate * 3) / 8
+         * Plus additional offset if quarter-shift is enabled (not implemented yet)
+         */
+        uint32_t lpf_bandwidth = (sampling_rate() * 3) / 8;
+
+        // For now, quarter-shift is disabled, so no offset added
+        // When quarter-shift is implemented:
+        // if (quarter_shift_enabled) {
+        //     uint32_t offset = (sampling_rate() << decimation_n) / 8;
+        //     lpf_bandwidth += offset * 2;
+        // }
+
+        radio::set_baseband_filter_bandwidth_rx(lpf_bandwidth);
+#else
+        radio::set_baseband_filter_bandwidth_rx(baseband_bandwidth());
+#endif
+    }
 }
 
 void ReceiverModel::update_sampling_rate() {
@@ -324,23 +361,31 @@ void ReceiverModel::update_sampling_rate() {
     // protocols that need quick RX/TX turn-around.
 
     // Disabling baseband while changing sampling rates seems like a good idea...
-    radio::set_baseband_rate(sampling_rate());
+    if (enabled_) {
+        radio::set_baseband_rate(sampling_rate());
+    }
     update_tuning_frequency();
 }
 
 void ReceiverModel::update_lna() {
-    radio::set_lna_gain(lna());
+    if (enabled_)
+        radio::set_lna_gain(lna());
 }
 
 void ReceiverModel::update_vga() {
-    radio::set_vga_gain(vga());
+    if (enabled_)
+        radio::set_vga_gain(vga());
 }
 
 void ReceiverModel::update_rf_amp() {
-    radio::set_rf_amp(rf_amp());
+    if (enabled_)
+        radio::set_rf_amp(rf_amp());
 }
 
 void ReceiverModel::update_modulation() {
+    if (!enabled_)
+        return;
+
     switch (modulation()) {
         default:
         case Mode::AMAudio:
@@ -395,5 +440,6 @@ void ReceiverModel::update_antenna_bias() {
 }
 
 void ReceiverModel::update_headphone_volume() {
-    audio::headphone::set_volume(headphone_volume());
+    if (enabled_)
+        audio::headphone::set_volume(headphone_volume());
 }

firmware/application/rf_path.cpp

@@ -35,6 +35,36 @@ namespace path {
 
 namespace {
 
+#ifdef PRALINE
+/* PRALINE uses a simplified RF path with only 5 control signals.
+ * The RF path architecture is completely different from HackRF One.
+ */
+struct PralineConfig {
+    bool tx_en;
+    bool mix_en_n;  // Inverted: 0 = mixer enabled
+    bool lpf_en;
+    bool rf_amp_en;
+    bool ant_bias_en_n;  // Inverted: 0 = bias enabled
+
+    static void gpio_init() {
+        gpio_tx_enable.output();
+        gpio_mix_enable_n.output();
+        gpio_lpf_enable.output();
+        gpio_rf_amp_enable.output();
+        gpio_ant_bias_disable.output();
+    }
+
+    void apply() const {
+        gpio_tx_enable.write(tx_en);
+        gpio_mix_enable_n.write(mix_en_n);
+        gpio_lpf_enable.write(lpf_en);
+        gpio_rf_amp_enable.write(rf_amp_en);
+        gpio_ant_bias_disable.write(ant_bias_en_n);
+    }
+};
+
+#else
+/* HackRF One uses 11 GPIOs for RF path control */
 using GPIOs = std::array<GPIO, 11>;
 
 /* TODO: ARM GCC 4.8 2014q3 doesn't like this array inside struct Config.
@@ -53,7 +83,10 @@ constexpr GPIOs gpios{
     gpio_rx_amp,
     gpio_not_rx_amp_pwr,
 };
+#endif
 
+#ifndef PRALINE
+/* HackRF One Config struct - not used on PRALINE */
 struct Config {
     using base_type = uint16_t;
 
@@ -153,7 +186,10 @@ struct Config {
         }
     }
 };
+#endif /* !PRALINE */
 
+#ifndef PRALINE
+/* HackRF One config table - not used on PRALINE */
 using ConfigAmp = std::array<Config, 2>;
 using ConfigDirection = std::array<ConfigAmp, 2>;
 using ConfigBand = std::array<ConfigDirection, 3>;
@@ -193,12 +229,26 @@ constexpr Config get_config(
     const bool amplify) {
     return config_table[toUType(band)][toUType(direction)][amplify ? 1 : 0];
 }
+#endif /* !PRALINE */
 
 } /* namespace */
 
 void Path::init() {
+#ifdef PRALINE
+    PralineConfig::gpio_init();
+    /* Set safe initial state: RX mode, mixer enabled, LPF on, amp off, no bias */
+    PralineConfig config = {
+        .tx_en = false,
+        .mix_en_n = false,     // Mixer enabled (inverted)
+        .lpf_en = true,        // LPF on for low band
+        .rf_amp_en = false,    // Amp off
+        .ant_bias_en_n = true  // Bias off (inverted)
+    };
+    config.apply();
+#else
     update();
     Config::gpio_init();
+#endif
 }
 
 void Path::set_direction(const Direction new_direction) {
@@ -220,20 +270,48 @@ void Path::update() {
     /* 0 ^ 0 => 0 & 0 = 0 ^ 0 = 0 (no change)
      * 0 ^ 1 => 1 & 0 = 0 ^ 0 = 0 (ignore change to 1)
      * 1 ^ 0 => 1 & 1 = 1 ^ 1 = 0 (allow change to 0)
-     * 1 ^ 1 => 0 & 1 = 0 ^ 1 = 1 (no change)
+     * 1 ^ 1 => 0 & 1 = 0 ^ 1 = 1 (no change) */
+
+#ifdef PRALINE
+    /* PRALINE RF path control:
+     * - tx_en: 1 for TX, 0 for RX
+     * - mix_en_n: 0 to enable mixer (inverted), 1 to bypass
+     * - lpf_en: 1 for low band (< 2.4 GHz), 0 for high band
+     * - rf_amp_en: 1 to enable RF amplifier
+     * - ant_bias_en_n: 0 to enable antenna bias (inverted)
      */
     // const Config changed = _config ^ config_next;
     // const Config turned_off = _config & changed;
 
+    PralineConfig config;
+
     /* In transition, ignore the bits that are turning on. So this transition phase
      * only turns off signals. It doesn't turn on signals.
      */
     // const Config transition_config = _config ^ turned_off;
     // update_signals(transition_config);
 
+    config.tx_en = (direction == Direction::Transmit);
+
+    /* Mixer bypass for mid band (2.3-2.7 GHz direct to MAX2831) */
+    config.mix_en_n = (band == Band::Mid);  // 1 = bypass (disabled)
+
     /* Move to the final state by turning on required signals. */
+    /* LPF for low band */
+    config.lpf_en = (band == Band::Low);
+
+    /* RF amp when amplification requested */
+    config.rf_amp_en = rf_amp;
+
+    /* Antenna bias off by default */
+    config.ant_bias_en_n = true;
+
+    config.apply();
+#else
+    /* HackRF One RF path control */
     const auto config = get_config(direction, band, rf_amp);
     config.apply();
+#endif
 }
 
 }  // namespace path

firmware/application/shell.cpp

@@ -32,6 +32,10 @@
 #include "chprintf.h"
 #include "portapack.hpp"
 
+extern "C" {
+#include "platform_detect.h"
+}
+
 /**
  * @brief   Shell termination event source.
  */
@@ -65,8 +69,42 @@ static void list_commands(BaseSequentialStream* chp, const ShellCommand* scp) {
     }
 }
 
+static const char* get_board_revision_string(board_rev_t rev) {
+    switch (rev) {
+        case BOARD_REV_HACKRF1_OLD:
+            return "HackRF R1-R5";
+        case BOARD_REV_HACKRF1_R6:
+            return "HackRF R6";
+        case BOARD_REV_HACKRF1_R7:
+            return "HackRF R7";
+        case BOARD_REV_HACKRF1_R8:
+            return "HackRF R8";
+        case BOARD_REV_HACKRF1_R9:
+            return "HackRF R9";
+        case BOARD_REV_HACKRF1_R10:
+            return "HackRF R10";
+        case BOARD_REV_GSG_HACKRF1_R6:
+            return "GSG HackRF R6";
+        case BOARD_REV_GSG_HACKRF1_R7:
+            return "GSG HackRF R7";
+        case BOARD_REV_GSG_HACKRF1_R8:
+            return "GSG HackRF R8";
+        case BOARD_REV_GSG_HACKRF1_R9:
+            return "GSG HackRF R9";
+        case BOARD_REV_GSG_HACKRF1_R10:
+            return "GSG HackRF R10";
+        case BOARD_REV_UNRECOGNIZED:
+            return "Unrecognized";
+        case BOARD_REV_UNDETECTED:
+            return "Undetected";
+        default:
+            return "Unknown";
+    }
+}
+
 static void cmd_info(BaseSequentialStream* chp, int argc, char* argv[]) {
     (void)argv;
+
     if (argc > 0) {
         usage(chp, const_cast<char*>("info"));
         return;
@@ -92,7 +130,10 @@ static void cmd_info(BaseSequentialStream* chp, int argc, char* argv[]) {
 #ifdef VERSION_STRING
     chprintf(chp, "Mayhem Version:   %s\r\n", VERSION_STRING);
 #endif
-    chprintf(chp, "HackRF Board Rev: %s\r\n", hackrf_r9 ? "R9" : "R1-R8");
+
+    board_rev_t revision = detected_revision();
+    const char* revision_string = get_board_revision_string(revision);
+    chprintf(chp, "HackRF Board Rev: %s\r\n", revision_string);
     chprintf(chp, "Reference Source: %s\r\n", portapack::clock_manager.get_source().c_str());
     chprintf(chp, "Reference Freq:   %s\r\n", portapack::clock_manager.get_freq().c_str());
 #ifdef __DATE__

firmware/application/transmitter_model.cpp

@@ -31,6 +31,8 @@
 #include "portapack_persistent_memory.hpp"
 #include "radio.hpp"
 
+#include <algorithm>
+
 using namespace hackrf::one;
 using namespace portapack;
 
@@ -70,7 +72,7 @@ void TransmitterModel::set_channel_bandwidth(uint32_t v) {
 }
 
 uint8_t TransmitterModel::tx_gain() const {
-    return settings_.tx_gain_db;
+    return std::min(settings_.tx_gain_db, portapack::persistent_memory::config_tx_gain_max_db());
 }
 
 void TransmitterModel::set_tx_gain(uint8_t v_db) {
@@ -79,7 +81,7 @@ void TransmitterModel::set_tx_gain(uint8_t v_db) {
 }
 
 bool TransmitterModel::rf_amp() const {
-    return settings_.rf_amp;
+    return settings_.rf_amp && !portapack::persistent_memory::config_tx_amp_disabled();
 }
 
 void TransmitterModel::set_rf_amp(bool enabled) {
@@ -92,6 +94,15 @@ void TransmitterModel::set_antenna_bias() {
 }
 
 void TransmitterModel::enable() {
+    if (portapack::persistent_memory::config_tx_disabled()) {
+        radio::disable();
+
+        TXDisabledMessage message;
+        EventDispatcher::send_message(message);
+
+        return;
+    }
+
     enabled_ = true;
     radio::set_direction(rf::Direction::Transmit);
     update_tuning_frequency();
@@ -101,7 +112,6 @@ void TransmitterModel::enable() {
     update_sampling_rate();
     update_tx_gain();
 
-    led_tx.on();
     signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
         this->on_tick_second();
     };
@@ -118,7 +128,6 @@ void TransmitterModel::disable() {
     radio::disable();
 
     rtc_time::signal_tick_second -= signal_token_tick_second;
-    led_tx.off();
 }
 
 void TransmitterModel::initialize() {
@@ -135,11 +144,13 @@ void TransmitterModel::configure_from_app_settings(
 }
 
 void TransmitterModel::update_tuning_frequency() {
-    radio::set_tuning_frequency(target_frequency());
+    if (enabled_)
+        radio::set_tuning_frequency(target_frequency());
 }
 
 void TransmitterModel::update_baseband_bandwidth() {
-    radio::set_baseband_filter_bandwidth_tx(baseband_bandwidth());
+    if (enabled_)
+        radio::set_baseband_filter_bandwidth_tx(baseband_bandwidth());
 }
 
 void TransmitterModel::update_sampling_rate() {
@@ -148,17 +159,20 @@ void TransmitterModel::update_sampling_rate() {
     // protocols that need quick RX/TX turn-around.
 
     // Disabling baseband while changing sampling rates seems like a good idea...
+    if (enabled_)
+        radio::set_baseband_rate(sampling_rate());
 
-    radio::set_baseband_rate(sampling_rate());
     update_tuning_frequency();
 }
 
 void TransmitterModel::update_tx_gain() {
-    radio::set_tx_gain(tx_gain());
+    if (enabled_)
+        radio::set_tx_gain(tx_gain());
 }
 
 void TransmitterModel::update_rf_amp() {
-    radio::set_rf_amp(rf_amp());
+    if (enabled_)
+        radio::set_rf_amp(rf_amp());
 }
 
 void TransmitterModel::update_antenna_bias() {

firmware/application/tuning.cpp

@@ -26,9 +26,26 @@
 namespace tuning {
 namespace config {
 
+// Forward declarations
+Config low_band(const rf::Frequency target_frequency);
+Config mid_band(const rf::Frequency target_frequency);
+Config high_band(const rf::Frequency target_frequency);
+
 // Low band <2170 Mhz:
 constexpr rf::Frequency low_band_second_lo_frequency(const rf::Frequency target_frequency) {
+#ifdef PRALINE
+    // Praline-specific formula for MAX2831 (2.3-2.6 GHz range)
+    // Use a fixed second_lo that:
+    // 1. Falls in MAX2831's sweet spot (2.3-2.6 GHz)
+    // 2. Gives RFFC5072 a VCO frequency in its range (2700-5400 MHz)
+
+    // For most low-band frequencies, use 2500 MHz as second_lo
+    // This gives RFFC5072 plenty of headroom
+    (void)target_frequency;  // Unused in fixed formula
+    return 2500'000'000;
+#else
     return 2650'000'000 - (target_frequency / 7);
+#endif
 }
 
 Config low_band(const rf::Frequency target_frequency) {
@@ -40,20 +57,52 @@ Config low_band(const rf::Frequency target_frequency) {
 
 // Mid band 2170-2740 Mhz:
 Config mid_band(const rf::Frequency target_frequency) {
+#ifdef PRALINE
+    // For Praline with MAX2831 (2.3-2.6 GHz range)
+    // Frequencies 2170-2300 MHz need upconversion since they're below MAX2831 minimum
+    if (target_frequency < 2300'000'000) {
+        // Treat as low band
+        return low_band(target_frequency);
+    }
+    // Frequencies 2300-2600 MHz can go direct (no RFFC5072)
+    else if (target_frequency <= 2600'000'000) {
+        const rf::Frequency second_lo_frequency = target_frequency;
+        const rf::Frequency first_lo_frequency = 0;
+        const bool mixer_invert = false;
+        return {first_lo_frequency, second_lo_frequency, rf::path::Band::Mid, mixer_invert};
+    }
+    // Frequencies 2600-2740 MHz need downconversion since they're above MAX2831 maximum
+    else {
+        // Treat as high band
+        return high_band(target_frequency);
+    }
+#else
     const rf::Frequency second_lo_frequency = target_frequency;
     const rf::Frequency first_lo_frequency = 0;
     const bool mixer_invert = false;
     return {first_lo_frequency, second_lo_frequency, rf::path::Band::Mid, mixer_invert};
+#endif
 }
 
 // High band >2740 Mhz:
 constexpr rf::Frequency high_band_second_lo_frequency(const rf::Frequency target_frequency) {
+#ifdef PRALINE
+    // Praline formula tuned for MAX2831 (2.3-2.6 GHz range)
+    // Keep second_lo in MAX2831's range while allowing RFFC5072 to work
+    if (target_frequency < 3600'000'000)
+        return 2400'000'000 + ((target_frequency - 2740'000'000) / 4);
+    else if (target_frequency < 5100'000'000)
+        return 2500'000'000 + ((target_frequency - 3600'000'000) / 6);
+    else
+        return 2550'000'000 + ((target_frequency - 5100'000'000) / 10);
+#else
     if (target_frequency < 3600'000'000)
         return (2170'000'000 + (((target_frequency - 2740'000'000) * 57) / 86));
     else if (target_frequency < 5100'000'000)
         return (2350'000'000 + ((target_frequency - 3600'000'000) / 5));
     else
         return (2500'000'000 + ((target_frequency - 5100'000'000) / 9));
+#endif
 }
 
 Config high_band(const rf::Frequency target_frequency) {

firmware/application/ui/ui_geomap.cpp

@@ -657,7 +657,13 @@ void GeoMap::move(const float lon, const float lat) {
     } else {
         if (is_changed) {
             set_osm_max_zoom();
-            redraw_map = true;
+            double global_center_px = lon_to_pixel_x_tile(lon_, map_osm_real_zoom);
+            double global_center_py = lat_to_pixel_y_tile(lat_, map_osm_real_zoom);
+            // Redraw if viewport moved by at least 1 pixel (includes zoom level changes)
+            if (abs(global_center_px - (r.width() / 2.0) - viewport_top_left_px) >= 1.0 ||
+                abs(global_center_py - (r.height() / 2.0) - viewport_top_left_py) >= 1.0) {
+                redraw_map = true;
+            }
         }
     }
 }

firmware/application/ui/ui_receiver.cpp

@@ -27,6 +27,10 @@
 #include "ui_receiver.hpp"
 #include "ui_freqman.hpp"
 
+#ifndef PRALINE
+#include "audio.hpp"
+#endif
+
 using namespace portapack;
 
 namespace ui {
@@ -591,8 +595,18 @@ AudioVolumeField::AudioVolumeField(
           /* fill char */ ' '} {
     set_value(receiver_model.normalized_headphone_volume());
 
+#ifdef PRALINE
     on_change = [](int32_t v) {
         receiver_model.set_normalized_headphone_volume(v);
+#else
+    on_change = [](int32_t vol) {
+        // don't call receiver model, because this widget shuld be able to handle volume settinsg from any app, regardless of the receiver model's enables state. like the tx apps should be able to set volume too.
+        // this is identical to the receiver model's method
+        uint8_t v = clip<uint8_t>(vol, 0, 99);
+        auto new_volume = volume_t::decibel(v - 99) + audio::headphone::volume_range().max;
+        persistent_memory::set_headphone_volume(new_volume);
+        audio::headphone::set_volume(new_volume);
+#endif
     };
 }
 

firmware/application/ui/ui_spectrum.cpp

@@ -332,6 +332,10 @@ WaterfallView::WaterfallView(const bool cursor) {
         }
     };
 
+    load_gradient();
+}
+
+void WaterfallView::load_gradient() {
     if (!waterfall_widget.gradient.load_file(default_gradient_file)) {
         waterfall_widget.gradient.set_default();
     }

firmware/application/ui/ui_spectrum.hpp

@@ -146,6 +146,7 @@ class WaterfallView : public View {
 
     void set_parent_rect(const Rect new_parent_rect) override;
     void show_audio_spectrum_view(const bool show);
+    void load_gradient();
 
    private:
     void update_widgets_rect();

firmware/application/ui_navigation.cpp

@@ -49,10 +49,9 @@
 #include "ui_rds.hpp"
 #include "ui_recon.hpp"
 // #include "ui_scanner.hpp"
-#include "ui_sd_over_usb.hpp"
+// #include "ui_sd_over_usb.hpp"
 #include "ui_search.hpp"
 #include "ui_settings.hpp"
-#include "ui_siggen.hpp"
 #include "ui_sonde.hpp"
 #include "ui_ss_viewer.hpp"
 // #include "ui_test.hpp"
@@ -114,7 +113,7 @@ const NavigationView::AppList NavigationView::appList = {
     /* HOME ******************************************************************/
     {nullptr, "Receive", HOME, Color::cyan(), &bitmap_icon_receivers, new ViewFactory<ReceiversMenuView>()},
     {nullptr, "Transmit", HOME, Color::cyan(), &bitmap_icon_transmit, new ViewFactory<TransmittersMenuView>()},
-    {nullptr, "Tranceiver", HOME, Color::cyan(), &bitmap_icon_tranceivers, new ViewFactory<TranceiversMenuView>()},
+    {nullptr, "Transceiver", HOME, Color::cyan(), &bitmap_icon_transceivers, new ViewFactory<TransceiversMenuView>()},
     {"recon", "Recon", HOME, Color::green(), &bitmap_icon_scanner, new ViewFactory<ReconView>()},
     {"capture", "Capture", HOME, Color::red(), &bitmap_icon_capture, new ViewFactory<CaptureAppView>()},
     {"replay", "Replay", HOME, Color::green(), &bitmap_icon_replay, new ViewFactory<PlaylistView>()},
@@ -140,7 +139,6 @@ const NavigationView::AppList NavigationView::appList = {
     {"pocsagtx", "POCSAG TX", TX, ui::Color::green(), &bitmap_icon_pocsag, new ViewFactory<POCSAGTXView>()},
     {"rdstx", "RDS", TX, ui::Color::green(), &bitmap_icon_rds, new ViewFactory<RDSView>()},
     {"touchtune", "TouchTune", TX, ui::Color::green(), &bitmap_icon_touchtunes, new ViewFactory<TouchTunesView>()},
-    {"signalgen", "SignalGen", TX, Color::green(), &bitmap_icon_cwgen, new ViewFactory<SigGenView>()},
     /* TRX ********************************************************************/
     {"microphone", "Mic", TRX, Color::green(), &bitmap_icon_microphone, new ViewFactory<MicTXView>()},
     /* UTILITIES *************************************************************/
@@ -148,7 +146,7 @@ const NavigationView::AppList NavigationView::appList = {
     {"freqman", "Freq. Manager", UTILITIES, Color::green(), &bitmap_icon_freqman, new ViewFactory<FrequencyManagerView>()},
     {"iqtrim", "IQ Trim", UTILITIES, Color::orange(), &bitmap_icon_trim, new ViewFactory<IQTrimView>()},
     {"notepad", "Notepad", UTILITIES, Color::dark_cyan(), &bitmap_icon_notepad, new ViewFactory<TextEditorView>()},
-    {nullptr, "SD Over USB", UTILITIES, Color::yellow(), &bitmap_icon_hackrf, new ViewFactory<SdOverUsbView>()},
+    //{nullptr, "SD Over USB", UTILITIES, Color::yellow(), &bitmap_icon_hackrf, new ViewFactory<SdOverUsbView>()},
     {nullptr, "Debug", UTILITIES, Color::light_grey(), &bitmap_icon_debug, new ViewFactory<DebugMenuView>()},
     //{"testapp", "Test App", UTILITIES, Color::dark_grey(), nullptr, new ViewFactory<TestView>()},
     // Dangerous apps.
@@ -320,6 +318,14 @@ SystemStatusView::SystemStatusView(
     refresh();
 }
 
+void SystemStatusView::on_tx_disabled() {
+    if (!nav_.is_valid())
+        return;
+
+    nav_.pop();
+    nav_.display_modal("Error", "RF transmit disabled.\nApplication closed.");
+}
+
 // when battery icon / text is clicked
 void SystemStatusView::on_battery_details() {
     if (!nav_.is_valid()) return;
@@ -601,7 +607,7 @@ bool InformationView::firmware_checksum_error() {
 
     // only checking firmware checksum once per boot
     if (!fw_checksum_checked) {
-        fw_checksum_error = (simple_checksum(FLASH_STARTING_ADDRESS, FLASH_ROM_SIZE) != FLASH_EXPECTED_CHECKSUM);
+        fw_checksum_error = (simple_checksum(FLASH_STARTING_ADDRESS, FLASH_SIZE_LIMIT_MB * 1024 * 1024) != FLASH_EXPECTED_CHECKSUM);
     }
     return fw_checksum_error;
 }
@@ -837,12 +843,12 @@ void TransmittersMenuView::on_populate() {
     add_external_items(nav_, app_location_t::TX, *this, return_icon ? 1 : 0);
 }
 
-/* TranceiversMenuView **************************************************/
+/* TransceiversMenuView **************************************************/
 
-TranceiversMenuView::TranceiversMenuView(NavigationView& nav)
+TransceiversMenuView::TransceiversMenuView(NavigationView& nav)
     : nav_(nav) {}
 
-void TranceiversMenuView::on_populate() {
+void TransceiversMenuView::on_populate() {
     bool return_icon = pmem::show_gui_return_icon();
     if (return_icon) {
         add_items({{"..", Theme::getInstance()->fg_light->foreground, &bitmap_icon_previous, [this]() { nav_.pop(); }}});

firmware/application/ui_navigation.hpp

@@ -303,6 +303,7 @@ class SystemStatusView : public View {
     void on_title();
     void refresh();
     void on_clk();
+    void on_tx_disabled();
     void rtc_battery_workaround();
     void on_battery_data(const BatteryStateMessage* msg);
     void on_battery_details();
@@ -314,6 +315,13 @@ class SystemStatusView : public View {
             this->refresh();
         }};
 
+    MessageHandlerRegistration message_handler_tx_disabled{
+        Message::ID::TXDisabled,
+        [this](const Message* const p) {
+            (void)p;
+            this->on_tx_disabled();
+        }};
+
     MessageHandlerRegistration message_handler_battery{
         Message::ID::BatteryStateData,
         [this](const Message* const p) {
@@ -381,10 +389,10 @@ class TransmittersMenuView : public BtnGridView {
     void on_populate() override;
 };
 
-class TranceiversMenuView : public BtnGridView {
+class TransceiversMenuView : public BtnGridView {
    public:
-    TranceiversMenuView(NavigationView& nav);
-    std::string title() const override { return "Tranceiver"; };
+    TransceiversMenuView(NavigationView& nav);
+    std::string title() const override { return "Transceiver"; };
 
    private:
     NavigationView& nav_;

firmware/application/usb_serial_cdc.c

@@ -37,9 +37,17 @@ CH_IRQ_HANDLER(USB0_IRQHandler) {
     usb0_isr();
 
     if (status & USB0_USBSTS_D_UI) {
+#ifdef PRALINE
+        if (thread_usb_event) {
+            chSysLockFromIsr();
+            chEvtSignalI(thread_usb_event, EVT_MASK_USB);
+            chSysUnlockFromIsr();
+        }
+#else
         chSysLockFromIsr();
         chEvtSignalI(thread_usb_event, EVT_MASK_USB);
         chSysUnlockFromIsr();
+#endif
     }
 
     if (status & USB0_USBSTS_D_SLI) {
@@ -71,9 +79,9 @@ void nvic_enable_irq(uint8_t irqn) {
 void usb_configuration_changed(usb_device_t* const device) {
     (void)device;
 
-    usb_endpoint_init(&usb_endpoint_int_in);
-    usb_endpoint_init(&usb_endpoint_bulk_in);
-    usb_endpoint_init(&usb_endpoint_bulk_out);
+    usb_endpoint_init(&usb_endpoint_int_in, false);
+    usb_endpoint_init(&usb_endpoint_bulk_in, false);
+    usb_endpoint_init(&usb_endpoint_bulk_out, false);
 }
 
 void setup_usb_serial_controller(void) {
@@ -88,8 +96,8 @@ void setup_usb_serial_controller(void) {
     usb_queue_init(&usb_endpoint_bulk_out_queue);
     usb_queue_init(&usb_endpoint_bulk_in_queue);
 
-    usb_endpoint_init(&usb_endpoint_control_out);
-    usb_endpoint_init(&usb_endpoint_control_in);
+    usb_endpoint_init(&usb_endpoint_control_out, false);
+    usb_endpoint_init(&usb_endpoint_control_in, false);
 
     usb_run(&usb_device);
 }

firmware/application/usb_serial_shell.cpp

@@ -1383,6 +1383,25 @@ static void cmd_getres(BaseSequentialStream* chp, int argc, char* argv[]) {
     chprintf(chp, res.c_str());
 }
 
+static void cmd_getflash(BaseSequentialStream* chp, int argc, char* argv[]) {
+    (void)argc;
+    (void)argv;
+    uint8_t allowrun = FLASH_SIZE_MB;
+    if (portapack::device_type == portapack::DeviceType::DEV_PORTAPACK) {
+        allowrun = 1;
+    }
+    std::string res = "ALLOWEDFW:" + to_string_dec_uint(FLASH_SIZE_MB) + "\r\nALLOWEDRUNTIME:" + to_string_dec_uint(allowrun) + "\r\nCURRENT:" + to_string_dec_uint(FLASH_SIZE_LIMIT_MB) + "\r\nok\r\n";
+    chprintf(chp, res.c_str());
+}
+
+static void cmd_getdevtype(BaseSequentialStream* chp, int argc, char* argv[]) {
+    (void)argc;
+    (void)argv;
+    std::string res = portapack::device_type == portapack::DeviceType::DEV_PORTARF ? "PORTARF" : "PORTAPACK";
+    res += "\r\nok\r\n";
+    chprintf(chp, res.c_str());
+}
+
 static const ShellCommand commands[] = {
     {"reboot", cmd_reboot},
     {"dfu", cmd_dfu},
@@ -1419,6 +1438,8 @@ static const ShellCommand commands[] = {
     {"asyncmsg", cmd_asyncmsg},
     {"setfreq", cmd_setfreq},
     {"getres", cmd_getres},
+    {"getflash", cmd_getflash},
+    {"getdevtype", cmd_getdevtype},
     {NULL, NULL}};
 
 static const ShellConfig shell_cfg1 = {

firmware/baseband/CMakeLists.txt

@@ -213,7 +213,11 @@ set(CPPWARN "-Wall -Wextra")
 # 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_M4 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"'")
+# Use BOARD variable if set, otherwise default to HACKRF_ONE
+if(NOT DEFINED BOARD)
+    set(BOARD "HACKRF_ONE")
+endif()
+set(DDEFS "-DLPC43XX -DLPC43XX_M4 -D__NEWLIB__ -D${BOARD} -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"'")
 
 # List all default ASM defines here, like -D_DEBUG=1
 set(DADEFS)
@@ -447,14 +451,6 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PREP replay)
 
-### Signal generator
-
-set(MODE_CPPSRC
-	proc_siggen.cpp
-)
-DeclareTargets(PSIG siggen)
-
-
 
 ### Tones
 
@@ -505,53 +501,6 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PFUT flash_utility)
 
-### SD over USB
-
-set(MODE_INCDIR
-	${HACKRF_PATH}/firmware
-	${HACKRF_PATH}/firmware/common
-	${HACKRF_PATH}/firmware/libopencm3/include
-)
-set(MODE_CPPSRC
-	sd_over_usb/proc_sd_over_usb.cpp
-
-	sd_over_usb/scsi.c
-	sd_over_usb/diskio.c
-	sd_over_usb/sd_over_usb.c
-	sd_over_usb/usb_descriptor.c
-	sd_over_usb/hackrf_core.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/hackrf_usb/usb_endpoint.c
-	${HACKRF_PATH}/firmware/common/usb_request.c
-	${HACKRF_PATH}/firmware/common/usb_standard_request.c
-	${HACKRF_PATH}/firmware/common/platform_detect.c
-	${HACKRF_PATH}/firmware/common/gpio_lpc.c
-	${HACKRF_PATH}/firmware/common/firmware_info.c
-	${HACKRF_PATH}/firmware/common/si5351c.c
-	${HACKRF_PATH}/firmware/common/i2c_bus.c
-	${HACKRF_PATH}/firmware/common/mixer.c
-	${HACKRF_PATH}/firmware/common/clkin.c
-	${HACKRF_PATH}/firmware/common/spi_bus.c
-	${HACKRF_PATH}/firmware/common/sgpio.c
-	${HACKRF_PATH}/firmware/common/rf_path.c
-	${HACKRF_PATH}/firmware/common/i2c_lpc.c
-	${HACKRF_PATH}/firmware/common/spi_ssp.c
-	${HACKRF_PATH}/firmware/common/rffc5071_spi.c
-	${HACKRF_PATH}/firmware/common/rffc5071.c
-	${HACKRF_PATH}/firmware/common/clkin.c
-	${HACKRF_PATH}/firmware/common/gpdma.c
-
-	${HACKRF_PATH}/firmware/libopencm3/lib/cm3/nvic.c
-	${HACKRF_PATH}/firmware/libopencm3/lib/cm3/sync.c
-	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/scu.c
-	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/timer.c
-	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/i2c.c
-)
-DeclareTargets(PUSB sd_over_usb)
-
 ### Place external app and disabled images below so they don't get added to the firmware
 set(add_to_firmware FALSE)
 set(MODE_FLAGS "-O3")
@@ -673,14 +622,21 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PADT adsbtx)
 
-### OOKStream
+### Binary Timed stream TX
 
 set(MODE_CPPSRC
-	proc_ook_stream_tx.cpp
+       proc_bint_stream_tx.cpp
 )
-DeclareTargets(POSK ookstream)
+DeclareTargets(POSK bintstream)
 
 
+### Signal generator
+
+set(MODE_CPPSRC
+	proc_siggen.cpp
+)
+DeclareTargets(PSIG siggen)
+
 
 ### WeFax Rx
 
@@ -711,6 +667,73 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PSCD subcar)
 
+### Morse RX Decoder
+
+set(MODE_CPPSRC
+    proc_morse.cpp
+)
+DeclareTargets(PMRS morse)
+
+### SD over USB
+
+set(MODE_INCDIR
+	${HACKRF_PATH}/firmware
+	${HACKRF_PATH}/firmware/common
+	${HACKRF_PATH}/firmware/libopencm3/include
+)
+
+### Morse TX
+
+set(MODE_CPPSRC
+    proc_morsetx.cpp
+)
+DeclareTargets(PMRT morsetx)
+
+set(MODE_CPPSRC
+	sd_over_usb/proc_sd_over_usb.cpp
+
+	sd_over_usb/scsi.c
+	sd_over_usb/diskio.c
+	sd_over_usb/sd_over_usb.c
+	sd_over_usb/usb_descriptor.c
+	sd_over_usb/hackrf_core.c
+
+	${HACKRF_PATH}/firmware/common/adc.c
+	${HACKRF_PATH}/firmware/common/selftest.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/hackrf_usb/usb_endpoint.c
+	${HACKRF_PATH}/firmware/common/usb_request.c
+	${HACKRF_PATH}/firmware/common/usb_standard_request.c
+	${HACKRF_PATH}/firmware/common/platform_detect.c
+	${HACKRF_PATH}/firmware/common/gpio_lpc.c
+	${HACKRF_PATH}/firmware/common/firmware_info.c
+	${HACKRF_PATH}/firmware/common/si5351c.c
+	${HACKRF_PATH}/firmware/common/i2c_bus.c
+	${HACKRF_PATH}/firmware/common/mixer.c
+	${HACKRF_PATH}/firmware/common/clkin.c
+	${HACKRF_PATH}/firmware/common/spi_bus.c
+	${HACKRF_PATH}/firmware/common/sgpio.c
+	${HACKRF_PATH}/firmware/common/rf_path.c
+	${HACKRF_PATH}/firmware/common/i2c_lpc.c
+	${HACKRF_PATH}/firmware/common/spi_ssp.c
+	${HACKRF_PATH}/firmware/common/rffc5071_spi.c
+	${HACKRF_PATH}/firmware/common/rffc5071.c
+	${HACKRF_PATH}/firmware/common/clkin.c
+	${HACKRF_PATH}/firmware/common/gpdma.c
+
+	${HACKRF_PATH}/firmware/libopencm3/lib/cm3/nvic.c
+	${HACKRF_PATH}/firmware/libopencm3/lib/cm3/sync.c
+	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/scu.c
+	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/timer.c
+	${HACKRF_PATH}/firmware/libopencm3/lib/lpc43xx/i2c.c
+)
+# sd_over_usb has type conflicts with PRALINE (HackRF Pro) - disable for now
+if(NOT BOARD STREQUAL "PRALINE")
+DeclareTargets(PUSB sd_over_usb)
+endif()
+
 
 ### HackRF "factory" firmware
 

firmware/baseband/baseband_dma.cpp

@@ -110,6 +110,9 @@ volatile uint32_t buffer_handled = 0;
 static void transfer_complete() {
     const auto next_lli_index = gpdma_channel_sgpio.next_lli() - &lli_loop[0];
     buffer_transfered++;
+#ifdef PRALINE
+    shared_memory.m4_dma_xfr_count++;  // Phase 0 instrumentation
+#endif
     thread_wait.wake_from_interrupt(next_lli_index);
 }
 
@@ -161,6 +164,10 @@ void disable() {
 }
 
 baseband::buffer_t wait_for_buffer() {
+#ifdef PRALINE
+    shared_memory.m4_dma_wait_count++;  // Phase 0 instrumentation
+#endif
+
     const auto next_index = thread_wait.sleep();
     buffer_handled++;
 

firmware/baseband/baseband_thread.cpp

@@ -87,8 +87,15 @@ void BasebandThread::run() {
     baseband_sgpio.configure(direction());
     baseband::dma::enable(direction());
     baseband_sgpio.streaming_enable();
+#ifdef PRALINE
+    shared_memory.m4_streaming_marker = 0xAA;  // Phase 0 instrumentation
+#endif
 
     while (!chThdShouldTerminate()) {
+#ifdef PRALINE
+        shared_memory.m4_baseband_loops++;  // Phase 0 instrumentation
+#endif
+
         // TODO: Place correct sampling rate into buffer returned here:
         const auto buffer_tmp = baseband::dma::wait_for_buffer();
         if (buffer_tmp) {

firmware/baseband/event_m4.cpp

@@ -99,6 +99,9 @@ void EventDispatcher::on_message(const Message* const message) {
     switch (message->id) {
         case Message::ID::Shutdown:
             on_message_shutdown(*reinterpret_cast<const ShutdownMessage*>(message));
+#ifdef PRALINE
+            shared_memory.baseband_message = nullptr;  // Must clear before M4 exits!
+#endif
             break;
 
         default:

firmware/baseband/event_m4.hpp

@@ -46,7 +46,13 @@ class EventDispatcher {
     }
 
     static inline void events_flag_isr(const eventmask_t events) {
+#ifdef PRALINE
+        if (thread_event_loop) {
+            chEvtSignalI(thread_event_loop, events);
+        }
+#else
         chEvtSignalI(thread_event_loop, events);
+#endif
     }
 
    private:

firmware/baseband/fprotos/c-fiat_v0.hpp

@@ -161,8 +161,6 @@ class FProtoSubCarFiatV0 : public FProtoSubCarBase {
                         }
 
                         if (bit_count > 0x46) {
-                            final_count = bit_count;
-
                             endbyte = (uint8_t)data_low;
                             /*
                                                         generic.data = ((uint64_t)hop << 32) | fix;
@@ -192,13 +190,11 @@ class FProtoSubCarFiatV0 : public FProtoSubCarBase {
 
     ManchesterState manchester_state = ManchesterStateMid1;
     uint8_t decoder_state = 0;
+    uint8_t bit_count = 0;
+    uint8_t endbyte = 0;
     uint16_t preamble_count = 0;
     uint32_t data_low = 0;
     uint32_t data_high = 0;
-    uint8_t bit_count = 0;
     uint32_t hop = 0;
     uint32_t fix = 0;
-    uint8_t endbyte = 0;
-    uint8_t final_count = 0;
-    uint32_t te_last = 0;
 };

firmware/baseband/fprotos/c-kia_v0.hpp

@@ -59,20 +59,26 @@ class FProtoSubCarKiaV0 : public FProtoSubCarBase {
                 break;
             case KIADecoderStepSaveDuration:
                 if (level) {
-                    if (duration >=
-                        (te_long + te_delta * 2UL)) {
-                        // Signal ended too early!
-                        // FURI_LOG_W(TAG, "Signal ended at %u bits (expected 61). Duration: %lu", decode_count_bit, duration);
-
+                    if (duration >= (te_long + te_delta * 2UL)) {
+                        // End of transmission detected
                         parser_step = KIADecoderStepReset;
+
                         if (decode_count_bit == min_count_bit_for_found) {
-                            // instance->generic.data = decode_data;
+                            // data = decode_data;
                             data_count_bit = decode_count_bit;
+                            // just used for log yet, so skip
+                            //  if (kia_verify_crc()) {
+                            //   FURI_LOG_I(TAG, "Valid signal received with correct CRC");
+                            // } else {
+                            //  FURI_LOG_W(TAG, "Signal received but CRC mismatch!");
+                            // }
+
                             if (callback)
                                 callback(this);
                         } else {
-                            // FURI_LOG_E(TAG, "Incomplete signal: only %u bits", decode_count_bit);
+                            // FURI_LOG_E(TAG, "Incomplete signal: only %u bits", instance->decoder.decode_count_bit);
                         }
+
                         decode_data = 0;
                         decode_count_bit = 0;
                         break;
@@ -80,26 +86,19 @@ class FProtoSubCarKiaV0 : public FProtoSubCarBase {
                         te_last = duration;
                         parser_step = KIADecoderStepCheckDuration;
                     }
+
                 } else {
                     parser_step = KIADecoderStepReset;
                 }
                 break;
             case KIADecoderStepCheckDuration:
                 if (!level) {
-                    if ((DURATION_DIFF(te_last, te_short) < te_delta) &&
-                        (DURATION_DIFF(duration, te_short) < te_delta)) {
+                    if ((DURATION_DIFF(te_last, te_short) < te_delta) && (DURATION_DIFF(duration, te_short) < te_delta)) {
                         subghz_protocol_blocks_add_bit(0);
-                        if (decode_count_bit % 10 == 0) {
-                            // FURI_LOG_D(TAG, "Decoded %u bits so far", decode_count_bit);
-                        }
                         parser_step = KIADecoderStepSaveDuration;
                     } else if (
-                        (DURATION_DIFF(te_last, te_long) < te_delta) &&
-                        (DURATION_DIFF(duration, te_long) < te_delta)) {
+                        (DURATION_DIFF(te_last, te_long) < te_delta) && (DURATION_DIFF(duration, te_long) < te_delta)) {
                         subghz_protocol_blocks_add_bit(1);
-                        if (decode_count_bit % 10 == 0) {
-                            // FURI_LOG_D(TAG, "Decoded %u bits so far", decode_count_bit);
-                        }
                         parser_step = KIADecoderStepSaveDuration;
                     } else {
                         // FURI_LOG_W(TAG, "Timing mismatch at bit %u. Last: %lu, Current: %lu", decode_count_bit, te_last, duration);