Stable 1.7.4 release (#1340)

* Update version.txt

* Update past_version.txt

.github/workflows/changelog.py

@@ -1,28 +1,55 @@
 import os
-import re
 import sys
 
-raw_git = os.popen('git log next --since="24 hours" --pretty=format:"- %h - {USERNAME}*+%al-%an*: %s"').read()
+import requests
+from datetime import datetime, timedelta, timezone
+
+# Set up your personal access token and the repository details
+token = os.environ.get('GH_TOKEN')
+repo_owner = "eried"
+repo_name = "portapack-mayhem"
 
 
-def compute_username(line):
-    stripped = re.search(r'(?<=\*)(.*?)(?=\*)', line).group(0)
+def print_stable_changelog(previous_sha):
+    url = f"compare/{previous_sha}...next"
+    commits = handle_get_request(url)
+    for commit in commits["commits"]:
+        # Print the commit details
+        print(format_output(commit))
 
-    pattern = re.compile("[$@+&?].*[$@+&?]")
-    if pattern.match(stripped):
-        stripped = re.sub("[$@+&?].*[$@+&?]", "", stripped)
-        stripped = re.match(r'.+?(?=-)', stripped).group(0)
+
+def print_nightly_changelog():
+    # Calculate the date and time 24 hours ago
+    since_time = (datetime.now(timezone.utc) - timedelta(hours=24)).isoformat()  # Check that this is UTC
+    url = "commits"
+    commits = handle_get_request(url, since_time)
+    for commit in commits:
+        # Print the commit details
+        print(format_output(commit))
+
+
+def handle_get_request(path, offset=None):
+    headers = {} if token == None else {"Authorization": f"Bearer {token}"}
+    params = {"since": offset}
+    url_base = f"https://api.github.com/repos/{repo_owner}/{repo_name}/"
+    response = requests.get(url_base + path, headers=headers, params=params)
+
+    # Check if the request was successful (status code 200)
+    if response.status_code == 200:
+        return response.json()
     else:
-        stripped = re.sub(r'^.*?-', "", stripped)
-    return "@" + stripped
+        print(f"Request failed with status code: {response.status_code}")
+    return None
 
 
-def compile_line(line):
-    username = compute_username(line)
-    line = re.sub(r'[*].*[*]', "", line)
-    line = line.replace("{USERNAME}", username)
-    return line
+def format_output(commit):
+    message_lines = commit["commit"]["message"].split("\n")
+    author = commit["author"]["login"] if commit["author"] and "login" in commit["author"] else commit["commit"]["author"]["name"]
+    return '- ' + commit["sha"][:8] + ' - @' + author + ': ' + message_lines[0]
 
 
-for row in raw_git.splitlines():
-    print(compile_line(row))
+if len(sys.argv) < 2:
+    print_nightly_changelog()
+else:
+    past_version = sys.argv[1]
+    print_stable_changelog(past_version)

.github/workflows/create_nightly_release.yml

@@ -47,6 +47,9 @@ jobs:
         run: mkdir ${{ github.workspace }}/build
       - name: Run the Docker image
         run: docker run -e VERSION_STRING=${{ steps.version_date.outputs.date }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+      - name: Create Small SD Card ZIP - No World Map
+        run: |
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && zip -r sdcard-no-map.zip sdcard
       - name: Download world map
         run: |
           wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -60,6 +63,8 @@ jobs:
         run: |
           mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && zip -r sdcard.zip sdcard
       - name: Create changelog
+        env:
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}
         run: |
           CHANGELOG=$(python3 .github/workflows/changelog.py)
           CHANGELOG="${CHANGELOG//'%'/'%25'}"
@@ -103,3 +108,13 @@ jobs:
           asset_path: ./sdcard.zip
           asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_COPY_TO_SDCARD.zip
           asset_content_type: application/zip
+      - name: Upload SD Card Assets - No Map
+        id: upload-sd-card-asset-no-map 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./sdcard-no-map.zip
+          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_COPY_TO_SDCARD-no-world-map.zip
+          asset_content_type: application/zip

.github/workflows/create_stable_release.yml

@@ -31,6 +31,9 @@ jobs:
         run: mkdir ${{ github.workspace }}/build
       - name: Run the Docker image
         run: docker run -e VERSION_STRING=${{ steps.version.outputs.version }} -i -v ${{ github.workspace }}:/havoc portapack-dev
+      - name: Create Small SD Card ZIP - No World Map
+        run: |
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && zip -r sdcard-no-map.zip sdcard
       - name: Download world map
         run: |
           wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -44,8 +47,10 @@ jobs:
         run: |
           mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && zip -r sdcard.zip sdcard
       - name: Create changelog
+        env:
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}
         run: |
-          CHANGELOG=$(python3 .github/workflows/stable_changelog.py ${{ steps.past_version.outputs.past_version }})
+          CHANGELOG=$(python3 .github/workflows/changelog.py ${{ steps.past_version.outputs.past_version }})
           CHANGELOG="${CHANGELOG//'%'/'%25'}"
           CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
           CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
@@ -96,4 +101,14 @@ jobs:
           asset_path: ./sdcard.zip
           asset_name: mayhem_${{ steps.version.outputs.version }}_COPY_TO_SDCARD.zip
           asset_content_type: application/zip
+      - name: Upload SD Card Assets - No Map
+        id: upload-sd-card-asset-no-map 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./sdcard-no-map.zip
+          asset_name: mayhem_${{ steps.version.outputs.version }}_COPY_TO_SDCARD-no-world-map.zip
+          asset_content_type: application/zip
      

.github/workflows/past_version.txt

@@ -1 +1 @@
-v1.7.2
+v1.7.3

.github/workflows/stable_changelog.py

@@ -1,30 +0,0 @@
-import os
-import re
-import sys
-
-past_version = sys.argv[1]
-
-raw_git = os.popen('git log ' + past_version + '..next --pretty=format:"- %h - {USERNAME}*+%al-%an*: %s"').read()
-
-
-def compute_username(line):
-    stripped = re.search(r'(?<=\*)(.*?)(?=\*)', line).group(0)
-
-    pattern = re.compile("[$@+&?].*[$@+&?]")
-    if pattern.match(stripped):
-        stripped = re.sub("[$@+&?].*[$@+&?]", "", stripped)
-        stripped = re.match(r'.+?(?=-)', stripped).group(0)
-    else:
-        stripped = re.sub(r'^.*?-', "", stripped)
-    return "@" + stripped
-
-
-def compile_line(line):
-    username = compute_username(line)
-    line = re.sub(r'[*].*[*]', "", line)
-    line = line.replace("{USERNAME}", username)
-    return line
-
-
-for row in raw_git.splitlines():
-    print(compile_line(row))

.github/workflows/version.txt

@@ -1 +1 @@
-v1.7.3
+v1.7.4

firmware/application/CMakeLists.txt

@@ -177,7 +177,9 @@ set(CPPSRC
 	event_m0.cpp
 	file_reader.cpp
 	file.cpp
+	freqman_db.cpp
 	freqman.cpp
+	io_convert.cpp
 	io_file.cpp
 	io_wave.cpp
 	irq_controls.cpp
@@ -234,6 +236,7 @@ set(CPPSRC
 	ui/ui_styles.cpp
 	ui/ui_tabview.cpp
 	ui/ui_textentry.cpp
+	ui/ui_tone_key.cpp
 	ui/ui_transmitter.cpp
 	apps/ui_about_simple.cpp
 	apps/ui_adsb_rx.cpp

firmware/application/apps/analog_audio_app.cpp

@@ -25,10 +25,10 @@
 #include "audio.hpp"
 #include "baseband_api.hpp"
 #include "file.hpp"
-#include "freqman.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
 #include "string_format.hpp"
+#include "ui_freqman.hpp"
 #include "utility.hpp"
 
 using namespace portapack;

firmware/application/apps/analog_audio_app.hpp

@@ -48,9 +48,9 @@ class AMOptionsView : public View {
 
     OptionsField options_config{
         {3 * 8, 0 * 16},
-        6,  // number of blanking characters
+        6,  // Max option length
         {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
         }};
 };
 
@@ -65,9 +65,9 @@ class NBFMOptionsView : public View {
     };
     OptionsField options_config{
         {3 * 8, 0 * 16},
-        4,
+        3,  // Max option length
         {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
         }};
 
     Text text_squelch{
@@ -93,9 +93,9 @@ class WFMOptionsView : public View {
     };
     OptionsField options_config{
         {3 * 8, 0 * 16},
-        4,
+        4,  // Max option length
         {
-            // using  common messages from freqman.cpp
+            // Using common messages from freqman_ui.cpp
         }};
 };
 

firmware/application/apps/capture_app.cpp

@@ -23,6 +23,7 @@
 #include "capture_app.hpp"
 #include "baseband_api.hpp"
 #include "portapack.hpp"
+#include "ui_freqman.hpp"
 
 using namespace portapack;
 
@@ -30,7 +31,6 @@ namespace ui {
 
 CaptureAppView::CaptureAppView(NavigationView& nav)
     : nav_{nav} {
-    freqman_set_bandwidth_option(SPEC_MODULATION, option_bandwidth);
     baseband::run_image(portapack::spi_flash::image_tag_capture);
 
     add_children({
@@ -43,6 +43,7 @@ CaptureAppView::CaptureAppView(NavigationView& nav)
         &field_lna,
         &field_vga,
         &option_bandwidth,
+        &option_format,
         &record_view,
         &waterfall,
     });
@@ -53,25 +54,36 @@ CaptureAppView::CaptureAppView(NavigationView& nav)
         this->field_frequency.set_step(v);
     };
 
-    option_bandwidth.on_change = [this](size_t, uint32_t base_rate) {
-        sampling_rate = 8 * base_rate;  // Decimation by 8 done on baseband side
-                                        /* base_rate is used for FFT calculation and display LCD, and also in recording writing SD Card rate. */
-        /* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz, when selected 1 Mhz BW ... */
-        /* ex. recording 500kHz BW to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card  */
-        waterfall.on_hide();
-
-        /* Set up proper anti aliasing BPF bandwith in MAX2837 before ADC sampling according to the new added BW Options. */
-        auto anti_alias_baseband_bandwidth_filter = filter_bandwidth_for_sampling_rate(sampling_rate);
-
-        record_view.set_sampling_rate(sampling_rate);
-        receiver_model.set_sampling_rate(sampling_rate);
-        receiver_model.set_baseband_bandwidth(anti_alias_baseband_bandwidth_filter);
-
-        waterfall.on_show();
+    option_format.set_selected_index(0);  // Default to C16
+    option_format.on_change = [this](size_t, uint32_t file_type) {
+        record_view.set_file_type((RecordView::FileType)file_type);
+    };
+
+    freqman_set_bandwidth_option(SPEC_MODULATION, option_bandwidth);
+    option_bandwidth.on_change = [this](size_t, uint32_t base_rate) {
+        /* base_rate is used for FFT calculation and display LCD, and also in recording writing SD Card rate. */
+        /* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz, when selected 1 Mhz BW ... */
+        /* ex. recording 500kHz BW to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card  */
+
+        // For lower bandwidths, (12k5, 16k, 20k), increase the oversample rate to get a higher sample rate.
+        OversampleRate oversample_rate = base_rate >= 25'000 ? OversampleRate::Rate8x : OversampleRate::Rate16x;
+
+        // HackRF suggests a minimum sample rate of 2M.
+        // Oversampling helps get to higher sample rates when recording lower bandwidths.
+        uint32_t sampling_rate = toUType(oversample_rate) * base_rate;
+
+        // Set up proper anti aliasing BPF bandwidth in MAX2837 before ADC sampling according to the new added BW Options.
+        auto anti_alias_baseband_bandwidth_filter = filter_bandwidth_for_sampling_rate(sampling_rate);
+
+        waterfall.stop();
+        record_view.set_sampling_rate(sampling_rate, oversample_rate);  // NB: Actually updates the baseband.
+        receiver_model.set_sampling_rate(sampling_rate);
+        receiver_model.set_baseband_bandwidth(anti_alias_baseband_bandwidth_filter);
+        waterfall.start();
     };
 
-    option_bandwidth.set_selected_index(7);  // Preselected default option 500kHz.
     receiver_model.enable();
+    option_bandwidth.set_selected_index(7);  // Preselected default option 500kHz.
 
     record_view.on_error = [&nav](std::string message) {
         nav.display_modal("Error", message);
@@ -83,11 +95,6 @@ CaptureAppView::~CaptureAppView() {
     baseband::shutdown();
 }
 
-void CaptureAppView::on_hide() {
-    waterfall.on_hide();
-    View::on_hide();
-}
-
 void CaptureAppView::set_parent_rect(const Rect new_parent_rect) {
     View::set_parent_rect(new_parent_rect);
 

firmware/application/apps/capture_app.hpp

@@ -31,7 +31,6 @@
 #include "ui_spectrum.hpp"
 #include "app_settings.hpp"
 #include "radio_state.hpp"
-#include "freqman.hpp"
 
 namespace ui {
 
@@ -40,7 +39,6 @@ class CaptureAppView : public View {
     CaptureAppView(NavigationView& nav);
     ~CaptureAppView();
 
-    void on_hide() override;
     void focus() override;
     void set_parent_rect(const Rect new_parent_rect) override;
 
@@ -55,10 +53,9 @@ class CaptureAppView : public View {
         "rx_capture", app_settings::Mode::RX,
         app_settings::Options::UseGlobalTargetFrequency};
 
-    uint32_t sampling_rate = 0;
-
     Labels labels{
         {{0 * 8, 1 * 16}, "Rate:", Color::light_grey()},
+        {{11 * 8, 1 * 16}, "Format:", Color::light_grey()},
     };
 
     RSSI rssi{
@@ -88,6 +85,12 @@ class CaptureAppView : public View {
         5,
         {}};
 
+    OptionsField option_format{
+        {18 * 8, 1 * 16},
+        3,
+        {{"C16", RecordView::FileType::RawS16},
+         {"C8", RecordView::FileType::RawS8}}};
+
     RecordView record_view{
         {0 * 8, 2 * 16, 30 * 8, 1 * 16},
         u"BBD_????.*",

firmware/application/apps/gps_sim_app.cpp

@@ -63,17 +63,15 @@ void GpsSimAppView::on_file_changed(const fs::path& new_file_path) {
 
     if (metadata) {
         field_frequency.set_value(metadata->center_frequency);
-        sample_rate = metadata->sample_rate;
-    } else {
-        sample_rate = 500000;
+        transmitter_model.set_sampling_rate(metadata->sample_rate);
     }
 
     // UI Fixup.
-    text_sample_rate.set(unit_auto_scale(sample_rate, 3, 1) + "Hz");
-    progressbar.set_max(file_size / 1024);
+    text_sample_rate.set(unit_auto_scale(transmitter_model.sampling_rate(), 3, 1) + "Hz");
+    progressbar.set_max(file_size);
     text_filename.set(truncate(file_path.filename().string(), 12));
 
-    auto duration = ms_duration(file_size, sample_rate, 2);
+    auto duration = ms_duration(file_size, transmitter_model.sampling_rate(), 2);
     text_duration.set(to_string_time_ms(duration));
 
     button_play.focus();
@@ -129,7 +127,6 @@ void GpsSimAppView::start() {
             });
     }
 
-    transmitter_model.set_sampling_rate(sample_rate);
     transmitter_model.enable();
 }
 
@@ -176,6 +173,11 @@ GpsSimAppView::GpsSimAppView(
         &waterfall,
     });
 
+    if (!settings_.loaded()) {
+        field_frequency.set_value(initial_target_frequency);
+        transmitter_model.set_sampling_rate(2600000);
+    }
+
     field_frequency.set_step(5000);
 
     button_play.on_select = [this](ImageButton&) {

firmware/application/apps/gps_sim_app.hpp

@@ -54,6 +54,8 @@ class GpsSimAppView : public View {
     std::string title() const override { return "GPS Sim TX"; };
 
    private:
+    static constexpr uint32_t initial_target_frequency = 1575420000;
+
     NavigationView& nav_;
     RxRadioState radio_state_{
         3000000 /* bandwidth */,
@@ -64,7 +66,6 @@ class GpsSimAppView : public View {
 
     static constexpr ui::Dim header_height = 3 * 16;
 
-    uint32_t sample_rate = 0;
     int32_t tx_gain{47};
     bool rf_amp{true};                                       // aux private var to store temporal, same as Replay App rf_amp user selection.
     static constexpr uint32_t baseband_bandwidth = 3000000;  // filter bandwidth

firmware/application/apps/replay_app.cpp

@@ -26,6 +26,8 @@
 
 #include "ui_fileman.hpp"
 #include "io_file.hpp"
+#include "io_convert.hpp"
+
 #include "baseband_api.hpp"
 #include "metadata_file.hpp"
 #include "portapack.hpp"
@@ -75,7 +77,8 @@ void ReplayAppView::on_file_changed(const fs::path& new_file_path) {
     progressbar.set_max(file_size);
     text_filename.set(truncate(file_path.filename().string(), 12));
 
-    auto duration = ms_duration(file_size, sample_rate, 4);
+    uint8_t sample_size = capture_file_sample_size(current()->path);
+    auto duration = ms_duration(file_size, sample_rate, sample_size);
     text_duration.set(to_string_time_ms(duration));
 
     button_play.focus();
@@ -110,7 +113,7 @@ void ReplayAppView::start() {
 
     std::unique_ptr<stream::Reader> reader;
 
-    auto p = std::make_unique<FileReader>();
+    auto p = std::make_unique<FileConvertReader>();
     auto open_error = p->open(file_path);
     if (open_error.is_valid()) {
         file_error();
@@ -191,7 +194,7 @@ ReplayAppView::ReplayAppView(
     };
 
     button_open.on_select = [this, &nav](Button&) {
-        auto open_view = nav.push<FileLoadView>(".C16");
+        auto open_view = nav.push<FileLoadView>(".C*");
         open_view->on_changed = [this](fs::path new_file_path) {
             on_file_changed(new_file_path);
         };

firmware/application/apps/soundboard_app.cpp

@@ -25,6 +25,7 @@
 #include "soundboard_app.hpp"
 #include "string_format.hpp"
 #include "tonesets.hpp"
+#include "ui_tone_key.hpp"
 
 using namespace tonekey;
 using namespace portapack;

firmware/application/apps/soundboard_app.hpp

@@ -29,7 +29,6 @@
 #include "baseband_api.hpp"
 #include "lfsr_random.hpp"
 #include "io_wave.hpp"
-#include "tone_key.hpp"
 #include "app_settings.hpp"
 #include "radio_state.hpp"
 

firmware/application/apps/ui_debug.cpp

@@ -30,6 +30,9 @@
 #include "audio.hpp"
 
 #include "ui_sd_card_debug.hpp"
+#include "ui_font_fixed_8x16.hpp"
+#include "ui_styles.hpp"
+#include "ui_painter.hpp"
 
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
@@ -248,7 +251,7 @@ void ControlsSwitchesWidget::on_show() {
 
 bool ControlsSwitchesWidget::on_key(const KeyEvent key) {
     key_event_mask = 1 << toUType(key);
-    long_press_key_event_mask = switch_long_press_occurred((size_t)key) ? key_event_mask : 0;
+    long_press_key_event_mask = key_is_long_pressed(key) ? key_event_mask : 0;
     return true;
 }
 
@@ -261,9 +264,9 @@ void ControlsSwitchesWidget::paint(Painter& painter) {
         {32, 64, 16, 16},  // Down
         {32, 0, 16, 16},   // Up
         {32, 32, 16, 16},  // Select
+        {96, 0, 16, 16},   // Dfu
         {16, 96, 16, 16},  // Encoder phase 0
         {48, 96, 16, 16},  // Encoder phase 1
-        {96, 0, 16, 16},   // Dfu
         {96, 64, 16, 16},  // Touch
     }};
 
@@ -280,9 +283,9 @@ void ControlsSwitchesWidget::paint(Painter& painter) {
         {32 + 1, 64 + 1, 16 - 2, 16 - 2},  // Down
         {32 + 1, 0 + 1, 16 - 2, 16 - 2},   // Up
         {32 + 1, 32 + 1, 16 - 2, 16 - 2},  // Select
+        {96 + 1, 0 + 1, 16 - 2, 16 - 2},   // Dfu
         {16 + 1, 96 + 1, 16 - 2, 16 - 2},  // Encoder phase 0
         {48 + 1, 96 + 1, 16 - 2, 16 - 2},  // Encoder phase 1
-        {96 + 1, 0 + 1, 16 - 2, 16 - 2},   // Dfu
     }};
 
     auto switches_raw = control::debug::switches();
@@ -351,13 +354,13 @@ DebugControlsView::DebugControlsView(NavigationView& nav) {
     });
 
     button_done.on_select = [&nav](Button&) {
-        switches_long_press_enable(0);
+        set_switches_long_press_config(0);
         nav.pop();
     };
 
     options_switches_mode.on_change = [this](size_t, OptionsField::value_t v) {
         (void)v;
-        switches_long_press_enable(options_switches_mode.selected_index_value());
+        set_switches_long_press_config(options_switches_mode.selected_index_value());
     };
 }
 
@@ -400,8 +403,10 @@ DebugMenuView::DebugMenuView(NavigationView& nav) {
         {"Peripherals", ui::Color::dark_cyan(), &bitmap_icon_peripherals, [&nav]() { nav.push<DebugPeripheralsMenuView>(); }},
         {"Temperature", ui::Color::dark_cyan(), &bitmap_icon_temperature, [&nav]() { nav.push<TemperatureView>(); }},
         {"Buttons Test", ui::Color::dark_cyan(), &bitmap_icon_controls, [&nav]() { nav.push<DebugControlsView>(); }},
+        {"Touch Test", ui::Color::dark_cyan(), &bitmap_icon_notepad, [&nav]() { nav.push<DebugScreenTest>(); }},
         {"P.Memory", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { nav.push<DebugPmemView>(); }},
         {"Debug Dump", ui::Color::dark_cyan(), &bitmap_icon_memory, [&nav]() { portapack::persistent_memory::debug_dump(); }},
+        {"Fonts Viewer", ui::Color::dark_cyan(), &bitmap_icon_notepad, [&nav]() { nav.push<DebugFontsView>(); }},
     });
     set_max_rows(2);  // allow wider buttons
 }
@@ -462,6 +467,93 @@ uint32_t DebugPmemView::registers_widget_feed(const size_t register_number) {
     return data.regfile[(page_size * page + register_number) / 4] >> (register_number % 4 * 8);
 }
 
+/* DebugFontsView *******************************************************/
+
+uint16_t DebugFontsView::display_font(Painter& painter, uint16_t y_offset, const Style* font_style, std::string_view font_name) {
+    auto char_width{font_style->font.char_width()};
+    auto char_height{font_style->font.line_height()};
+    auto cpl{((screen_width / char_width) - 6) & 0xF8};  // Display a multiple of 8 characters per line
+    uint16_t line_pos{y_offset};
+
+    painter.draw_string({0, y_offset}, *font_style, font_name);
+
+    // Displaying ASCII+extended characters from 0x20 to 0xFF
+    for (uint8_t c = 0; c <= 0xDF; c++) {
+        line_pos = y_offset + ((c / cpl) + 2) * char_height;
+
+        if ((c % cpl) == 0)
+            painter.draw_string({0, line_pos}, *font_style, "Ox" + to_string_hex(c + 0x20, 2));
+
+        painter.draw_char({((c % cpl) + 5) * char_width, line_pos}, *font_style, (char)(c + 0x20));
+    }
+
+    return line_pos + char_height;
+}
+
+void DebugFontsView::paint(Painter& painter) {
+    int16_t line_pos;
+
+    line_pos = display_font(painter, 32, &Styles::white, "Fixed 8x16");
+    display_font(painter, line_pos + 16, &Styles::white_small, "Fixed 5x8");
+}
+
+DebugFontsView::DebugFontsView(NavigationView& nav)
+    : nav_{nav} {
+    set_focusable(true);
+}
+
+/* DebugScreenTest ****************************************************/
+
+DebugScreenTest::DebugScreenTest(NavigationView& nav)
+    : nav_{nav} {
+    set_focusable(true);
+}
+
+bool DebugScreenTest::on_key(const KeyEvent key) {
+    Painter painter;
+    switch (key) {
+        case KeyEvent::Select:
+            nav_.pop();
+            break;
+        case KeyEvent::Down:
+            painter.fill_rectangle({0, 0, screen_width, screen_height}, semirand());
+            break;
+        case KeyEvent::Left:
+            pen_color = semirand();
+            break;
+        default:
+            break;
+    }
+    return true;
+}
+
+bool DebugScreenTest::on_encoder(EncoderEvent delta) {
+    pen_size = clip<int32_t>(pen_size + delta, 1, screen_width);
+    return true;
+}
+
+bool DebugScreenTest::on_touch(const TouchEvent event) {
+    Painter painter;
+    pen_pos = event.point;
+    painter.fill_rectangle({pen_pos.x() - pen_size / 2, pen_pos.y() - pen_size / 2, pen_size, pen_size}, pen_color);
+    return true;
+}
+
+uint16_t DebugScreenTest::semirand() {
+    static uint64_t seed{0x0102030405060708};
+    seed = seed * 137;
+    seed = (seed >> 1) | ((seed & 0x01) << 63);
+    return (uint16_t)seed;
+}
+
+void DebugScreenTest::paint(Painter& painter) {
+    painter.fill_rectangle({0, 16, screen_width, screen_height - 16}, Color::white());
+    painter.draw_string({10 * 8, screen_height / 2}, Styles::white, "Use Stylus");
+    pen_color = semirand();
+}
+
+/* DebugLCRView *******************************************************/
+
 /*DebugLCRView::DebugLCRView(NavigationView& nav, std::string lcr_string) {
 
         std::string debug_text;

firmware/application/apps/ui_debug.hpp

@@ -310,6 +310,33 @@ class DebugPmemView : public View {
     uint32_t registers_widget_feed(const size_t register_number);
 };
 
+class DebugFontsView : public View {
+   public:
+    DebugFontsView(NavigationView& nav);
+    void paint(Painter& painter) override;
+    std::string title() const override { return "Fonts"; };
+
+   private:
+    uint16_t display_font(Painter& painter, uint16_t y_offset, const Style* font_style, std::string_view font_name);
+    NavigationView& nav_;
+};
+
+class DebugScreenTest : public View {
+   public:
+    DebugScreenTest(NavigationView& nav);
+    bool on_key(KeyEvent key) override;
+    bool on_encoder(EncoderEvent delta) override;
+    bool on_touch(TouchEvent event) override;
+    uint16_t semirand();
+    void paint(Painter& painter) override;
+
+   private:
+    NavigationView& nav_;
+    Point pen_pos{};
+    Color pen_color{0};
+    int16_t pen_size{10};
+};
+
 /*class DebugLCRView : public View {
 public:
         DebugLCRView(NavigationView& nav, std::string lcrstring);

firmware/application/apps/ui_fileman.cpp

@@ -39,7 +39,9 @@ namespace fs = std::filesystem;
 namespace ui {
 static const fs::path txt_ext{u".TXT"};
 static const fs::path ppl_ext{u".PPL"};
+static const fs::path c8_ext{u".C8"};
 static const fs::path c16_ext{u".C16"};
+static const fs::path cxx_ext{u".C*"};
 static const fs::path png_ext{u".PNG"};
 static const fs::path bmp_ext{u".BMP"};
 }  // namespace ui
@@ -78,14 +80,15 @@ fs::path get_partner_file(fs::path path) {
         return {};
     auto ext = path.extension();
 
-    if (path_iequal(ext, txt_ext))
-        ext = c16_ext;
-    else if (path_iequal(ext, c16_ext))
-        ext = txt_ext;
-    else
+    if (is_cxx_capture_file(path))
+        path.replace_extension(txt_ext);
+    else if (path_iequal(ext, txt_ext)) {
+        path.replace_extension(c8_ext);
+        if (!fs::file_exists(path))
+            path.replace_extension(c16_ext);
+    } else
         return {};
 
-    path.replace_extension(ext);
     return fs::file_exists(path) && !fs::is_directory(path) ? path : fs::path{};
 }
 
@@ -141,6 +144,7 @@ void FileManBaseView::load_directory_contents(const fs::path& dir_path) {
     current_path = dir_path;
     entry_list.clear();
     auto filtering = !extension_filter.empty();
+    bool cxx_file = path_iequal(cxx_ext, extension_filter);
 
     text_current.set(dir_path.empty() ? "(sd root)" : truncate(dir_path, 24));
 
@@ -150,7 +154,7 @@ void FileManBaseView::load_directory_contents(const fs::path& dir_path) {
             continue;
 
         if (fs::is_regular_file(entry.status())) {
-            if (!filtering || path_iequal(entry.path().extension(), extension_filter))
+            if (!filtering || path_iequal(entry.path().extension(), extension_filter) || (cxx_file && is_cxx_capture_file(entry.path())))
                 insert_sorted(entry_list, {entry.path(), (uint32_t)entry.size(), false});
         } else if (fs::is_directory(entry.status())) {
             insert_sorted(entry_list, {entry.path(), 0, true});
@@ -399,11 +403,17 @@ void FileManagerView::refresh_widgets(const bool v) {
     set_dirty();
 }
 
-void FileManagerView::on_rename() {
+void FileManagerView::on_rename(std::string_view hint) {
     auto& entry = get_selected_entry();
-    name_buffer = entry.path.filename().string();
-    uint32_t cursor_pos = (uint32_t)name_buffer.length();
 
+    // Append the hint to the filename stem as a rename suggestion.
+    name_buffer = entry.path.stem().string();
+    if (!hint.empty())
+        name_buffer += "_" + std::string{hint};
+    name_buffer += entry.path.extension().string();
+
+    // Set the rename cursor to before the extension to make renaming simpler.
+    uint32_t cursor_pos = (uint32_t)name_buffer.length();
     if (auto pos = name_buffer.find_last_of(".");
         pos != name_buffer.npos && !entry.is_directory)
         cursor_pos = pos;
@@ -430,6 +440,11 @@ void FileManagerView::on_rename() {
 }
 
 void FileManagerView::on_delete() {
+    if (is_directory(get_selected_full_path()) && !is_empty_directory(get_selected_full_path())) {
+        nav_.display_modal("Delete", "Directory not empty!");
+        return;
+    }
+
     auto name = get_selected_entry().path.filename().string();
     nav_.push<ModalMessageView>(
         "Delete", "Delete " + name + "\nAre you sure?", YESNO,
@@ -497,7 +512,7 @@ bool FileManagerView::handle_file_open() {
     if (path_iequal(txt_ext, ext)) {
         nav_.push<TextEditorView>(path);
         return true;
-    } else if (path_iequal(c16_ext, ext) || path_iequal(ppl_ext, ext)) {
+    } else if (is_cxx_capture_file(path) || path_iequal(ppl_ext, ext)) {
         // TODO: Enough memory to push?
         nav_.push<PlaylistView>(path);
         return true;
@@ -541,6 +556,7 @@ FileManagerView::FileManagerView(
         &button_new_dir,
         &button_new_file,
         &button_open_notepad,
+        &button_rename_timestamp,
     });
 
     menu_view.on_highlight = [this]() {
@@ -564,7 +580,7 @@ FileManagerView::FileManagerView(
 
     button_rename.on_select = [this]() {
         if (selected_is_valid())
-            on_rename();
+            on_rename("");
     };
 
     button_delete.on_select = [this]() {
@@ -610,6 +626,13 @@ FileManagerView::FileManagerView(
         } else
             nav_.display_modal("Open in Notepad", "Can't open that in Notepad.");
     };
+
+    button_rename_timestamp.on_select = [this]() {
+        if (selected_is_valid() && !get_selected_entry().is_directory) {
+            on_rename(::truncate(to_string_timestamp(rtc_time::now()), 8));
+        } else
+            nav_.display_modal("Timestamp Rename", "Can't rename that.");
+    };
 }
 
 }  // namespace ui

firmware/application/apps/ui_fileman.hpp

@@ -207,7 +207,7 @@ class FileManagerView : public FileManBaseView {
     ClipboardMode clipboard_mode{ClipboardMode::None};
 
     void refresh_widgets(const bool v);
-    void on_rename();
+    void on_rename(std::string_view hint);
     void on_delete();
     void on_paste();
     void on_new_dir();
@@ -272,6 +272,12 @@ class FileManagerView : public FileManBaseView {
         {},
         &bitmap_icon_notepad,
         Color::orange()};
+
+    NewButton button_rename_timestamp{
+        {4 * 8, 34 * 8, 4 * 8, 32},
+        {},
+        &bitmap_icon_options_datetime,
+        Color::orange()};
 };
 
 } /* namespace ui */

firmware/application/apps/ui_freqman.cpp

@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
  * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -22,281 +23,502 @@
 
 #include "ui_freqman.hpp"
 
-#include "portapack.hpp"
 #include "event_m0.hpp"
+#include "portapack.hpp"
+#include "rtc_time.hpp"
+#include "tone_key.hpp"
+#include "ui_receiver.hpp"
+#include "ui_styles.hpp"
+#include "utility.hpp"
+
+#include <memory>
 
 using namespace portapack;
+using namespace ui;
+namespace fs = std::filesystem;
+
+// TODO: Clean up after moving to better lookup tables.
+using options_t = OptionsField::options_t;
+extern options_t freqman_modulations;
+extern options_t freqman_bandwidths[4];
+extern options_t freqman_steps;
+extern options_t freqman_steps_short;
+
+/* Set options. */
+void freqman_set_modulation_option(OptionsField& option) {
+    option.set_options(freqman_modulations);
+}
+
+void freqman_set_bandwidth_option(freqman_index_t modulation, OptionsField& option) {
+    if (is_valid(modulation))
+        option.set_options(freqman_bandwidths[modulation]);
+}
+
+void freqman_set_step_option(OptionsField& option) {
+    option.set_options(freqman_steps);
+}
+
+void freqman_set_step_option_short(OptionsField& option) {
+    option.set_options(freqman_steps_short);
+}
 
 namespace ui {
 
-static int32_t current_category_id = 0;
+/* FreqManBaseView ***************************************/
+
+size_t FreqManBaseView::current_category_index = 0;
 
 FreqManBaseView::FreqManBaseView(
     NavigationView& nav)
     : nav_(nav) {
-    add_children({&options_category,
-                  &label_category,
-                  &button_exit});
+    add_children(
+        {&label_category,
+         &options_category,
+         &button_exit});
 
-    // initialize
-    refresh_list();
-    options_category.on_change = [this](size_t category_id, int32_t) {
-        change_category(category_id);
+    options_category.on_change = [this](size_t new_index, int32_t) {
+        change_category(new_index);
     };
-    options_category.set_selected_index(current_category_id);
 
     button_exit.on_select = [this, &nav](Button&) {
         nav.pop();
     };
+
+    refresh_categories();
 };
 
 void FreqManBaseView::focus() {
     button_exit.focus();
 
+    // TODO: Shouldn't be on focus.
     if (error_ == ERROR_ACCESS) {
-        nav_.display_modal("Error", "File acces error", ABORT, nullptr);
+        nav_.display_modal("Error", "File access error", ABORT, nullptr);
     } else if (error_ == ERROR_NOFILES) {
-        nav_.display_modal("Error", "No database files\nin /freqman", ABORT, nullptr);
+        nav_.display_modal("Error", "No database files\nin /FREQMAN", ABORT, nullptr);
     } else {
         options_category.focus();
     }
 }
 
-void FreqManBaseView::get_freqman_files() {
-    std::vector<std::string>().swap(file_list);
+void FreqManBaseView::change_category(size_t new_index) {
+    if (categories().empty())
+        return;
 
-    auto files = scan_root_files(u"FREQMAN", u"*.TXT");
-
-    for (auto file : files) {
-        std::string file_name = file.stem().string();
-        // don't propose tmp / hidden files in freqman's list
-        if (file_name.length() && file_name[0] != '.') {
-            file_list.emplace_back(file_name);
-        }
-    }
-};
-
-void FreqManBaseView::change_category(int32_t category_id) {
-    current_category_id = category_id;
-
-    if (file_list.empty()) return;
-
-    if (!load_freqman_file(file_list[categories[category_id].second], database)) {
+    current_category_index = new_index;
+    if (!db_.open(get_freqman_path(current_category()))) {
         error_ = ERROR_ACCESS;
     }
-    freqlist_view.set_db(database);
-    text_empty.hidden(!database.empty());
-    set_dirty();
+
+    freqlist_view.set_db(db_);
 }
 
-void FreqManBaseView::refresh_list() {
-    categories.clear();
-    get_freqman_files();
+void FreqManBaseView::refresh_categories() {
+    OptionsField::options_t new_categories;
 
-    for (size_t n = 0; n < file_list.size(); n++)
-        categories.emplace_back(std::make_pair(file_list[n].substr(0, 14), n));
+    scan_root_files(
+        freqman_dir, u"*.TXT", [&new_categories](const fs::path& path) {
+            // Skip temp/hidden files.
+            if (path.empty() || path.native()[0] == u'.')
+                return;
 
-    // Alphabetical sort
-    std::sort(categories.begin(), categories.end(), [](auto& left, auto& right) {
+            // The UI layer will truncate long file names when displaying.
+            new_categories.emplace_back(path.stem().string(), new_categories.size());
+        });
+
+    // Alphabetically sort the categories.
+    std::sort(new_categories.begin(), new_categories.end(), [](auto& left, auto& right) {
         return left.first < right.first;
     });
 
-    options_category.set_options(categories);
-    if ((unsigned)current_category_id >= categories.size())
-        current_category_id = categories.size() - 1;
+    // Preserve last selection; ensure in range.
+    current_category_index = clip(current_category_index, 0u, new_categories.size());
+    auto saved_index = current_category_index;
+    options_category.set_options(std::move(new_categories));
+    options_category.set_selected_index(saved_index);
 }
 
-void FrequencySaveView::save_current_file() {
-    save_freqman_file(file_list[categories[current_category_id].second], database);
-    nav_.pop();
+void FreqManBaseView::refresh_list(int delta_selected) {
+    // Update the index and ensures in bounds.
+    freqlist_view.set_index(freqlist_view.get_index() + delta_selected);
+    freqlist_view.set_dirty();
 }
 
-void FrequencySaveView::on_save_name() {
-    text_prompt(nav_, desc_buffer, 28, [this](std::string& buffer) {
-        database.push_back({value_, 0, buffer, SINGLE});
-        save_current_file();
-    });
-}
-
-void FrequencySaveView::on_save_timestamp() {
-    database.push_back({value_, 0, live_timestamp.string(), SINGLE});
-    save_current_file();
-}
+/* FrequencySaveView *************************************/
 
 FrequencySaveView::FrequencySaveView(
     NavigationView& nav,
     const rf::Frequency value)
-    : FreqManBaseView(nav),
-      value_(value) {
-    desc_buffer.reserve(28);
-
-    // Todo: add back ?
-    /*for (size_t n = 0; n < database.size(); n++) {
-      if (database[n].value == value_) {
-      error_ = ERROR_DUPLICATE;
-      break;
-      }
-      }*/
-
-    add_children({&labels,
-                  &big_display,
-                  &button_save_name,
-                  &button_save_timestamp,
-                  &live_timestamp});
-
-    big_display.set(value);
-
-    button_save_name.on_select = [this, &nav](Button&) {
-        on_save_name();
-    };
-    button_save_timestamp.on_select = [this, &nav](Button&) {
-        on_save_timestamp();
-    };
-
-    options_category.on_change = [this, value](size_t category_id, int32_t) {
-        change_category(category_id);
-        big_display.set(value);
-    };
-}
-
-FrequencyLoadView::~FrequencyLoadView() {
-    std::vector<freqman_entry>().swap(database);
-}
-
-void FrequencyLoadView::refresh_widgets(const bool v) {
-    freqlist_view.hidden(v);
-    text_empty.hidden(!v);
-    // display.fill_rectangle(freqlist_view.screen_rect(), Color::black());
-    set_dirty();
-}
-
-FrequencyLoadView::FrequencyLoadView(
-    NavigationView& nav)
     : FreqManBaseView(nav) {
-    on_refresh_widgets = [this](bool v) {
-        refresh_widgets(v);
+    add_children(
+        {&labels,
+         &big_display,
+         &button_clear,
+         &button_edit,
+         &button_save,
+         &text_description});
+
+    entry_.type = freqman_type::Single;
+    entry_.frequency_a = value;
+    entry_.description = to_string_timestamp(rtc_time::now());
+    refresh_ui();
+
+    button_clear.on_select = [this, &nav](Button&) {
+        entry_.description = "";
+        refresh_ui();
     };
 
-    add_children({&freqlist_view,
-                  &text_empty});
+    button_edit.on_select = [this, &nav](Button&) {
+        temp_buffer_ = entry_.description;
+        text_prompt(nav_, temp_buffer_, desc_edit_max, [this](std::string& new_desc) {
+            entry_.description = new_desc;
+            refresh_ui();
+        });
+    };
 
-    // Resize menu view to fill screen
-    freqlist_view.set_parent_rect({0, 3 * 8, 240, 30 * 8});
-
-    freqlist_view.on_select = [&nav, this](FreqManUIList&) {
-        auto& entry = database[freqlist_view.get_index()];
-        if (entry.type == RANGE) {
-            // User chose a frequency range entry
-            if (on_range_loaded)
-                on_range_loaded(entry.frequency_a, entry.frequency_b);
-            else if (on_frequency_loaded)
-                on_frequency_loaded(entry.frequency_a);
-            // TODO: Maybe return center of range if user choses a range when the app needs a unique frequency, instead of frequency_a ?
-        } else {
-            // User chose an unique frequency entry
-            if (on_frequency_loaded)
-                on_frequency_loaded(entry.frequency_a);
-        }
-        // swap with empty vector to ensure memory is immediately released
-        std::vector<freqman_entry>().swap(database);
+    button_save.on_select = [this, &nav](Button&) {
+        db_.insert_entry(db_.entry_count(), entry_);
         nav_.pop();
     };
 }
 
-void FrequencyManagerView::on_edit_freq(rf::Frequency f) {
-    database[freqlist_view.get_index()].frequency_a = f;
-    save_freqman_file(file_list[categories[current_category_id].second], database);
-    change_category(current_category_id);
+void FrequencySaveView::refresh_ui() {
+    big_display.set(entry_.frequency_a);
+    text_description.set(entry_.description);
 }
 
-void FrequencyManagerView::on_edit_desc(NavigationView& nav) {
-    text_prompt(nav, desc_buffer, 28, [this](std::string& buffer) {
-        database[freqlist_view.get_index()].description = buffer;
-        save_freqman_file(file_list[categories[current_category_id].second], database);
-        change_category(current_category_id);
+/* FrequencyLoadView *************************************/
+
+FrequencyLoadView::FrequencyLoadView(
+    NavigationView& nav)
+    : FreqManBaseView(nav) {
+    add_children({&freqlist_view});
+
+    // Resize to fill screen. +2 keeps text out of border.
+    freqlist_view.set_parent_rect({0, 3 * 8, screen_width, 15 * 16 + 2});
+
+    freqlist_view.on_select = [&nav, this](size_t index) {
+        auto entry = db_[index];
+        // TODO: Maybe return center of range if user choses a range when the app
+        // needs a unique frequency, instead of frequency_a?
+        auto has_range = entry.type == freqman_type::Range ||
+                         entry.type == freqman_type::HamRadio;
+
+        if (on_range_loaded && has_range)
+            on_range_loaded(entry.frequency_a, entry.frequency_b);
+        else if (on_frequency_loaded)
+            on_frequency_loaded(entry.frequency_a);
+
+        nav_.pop();  // NB: this will call dtor.
+    };
+    freqlist_view.on_leave = [this]() {
+        button_exit.focus();
+    };
+}
+
+/* FrequencyManagerView **********************************/
+
+void FrequencyManagerView::on_edit_entry() {
+    auto edit_view = nav_.push<FrequencyEditView>(current_entry());
+    edit_view->on_save = [this](const freqman_entry& entry) {
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
+    };
+}
+
+void FrequencyManagerView::on_edit_freq() {
+    auto freq_edit_view = nav_.push<FrequencyKeypadView>(current_entry().frequency_a);
+    freq_edit_view->on_changed = [this](rf::Frequency f) {
+        auto entry = current_entry();
+        entry.frequency_a = f;
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
+    };
+}
+
+void FrequencyManagerView::on_edit_desc() {
+    temp_buffer_ = current_entry().description;
+    text_prompt(nav_, temp_buffer_, desc_edit_max, [this](std::string& new_desc) {
+        auto entry = current_entry();
+        entry.description = std::move(new_desc);
+        db_.replace_entry(current_index(), entry);
+        freqlist_view.set_dirty();
     });
 }
 
-void FrequencyManagerView::on_new_category(NavigationView& nav) {
-    text_prompt(nav, desc_buffer, 12, [this](std::string& buffer) {
-        File freqman_file;
-        create_freqman_file(buffer, freqman_file);
-        refresh_list();
-        change_category(current_category_id);
+void FrequencyManagerView::on_add_category() {
+    temp_buffer_.clear();
+    text_prompt(nav_, temp_buffer_, 20, [this](std::string& new_name) {
+        if (!new_name.empty()) {
+            create_freqman_file(new_name);
+            refresh_categories();
+        }
     });
 }
 
-void FrequencyManagerView::on_delete() {
-    if (database.empty()) {
-        delete_freqman_file(file_list[categories[current_category_id].second]);
-        refresh_list();
-    } else {
-        database.erase(database.begin() + freqlist_view.get_index());
-        save_freqman_file(file_list[categories[current_category_id].second], database);
-    }
-    change_category(current_category_id);
+void FrequencyManagerView::on_del_category() {
+    nav_.push<ModalMessageView>(
+        "Delete", "Delete " + current_category() + "\nAre you sure?", YESNO,
+        [this](bool choice) {
+            if (choice) {
+                db_.close();  // Ensure file is closed.
+                auto path = get_freqman_path(current_category());
+                delete_file(path);
+                refresh_categories();
+            }
+        });
 }
 
-void FrequencyManagerView::refresh_widgets(const bool v) {
-    button_edit_freq.hidden(v);
-    button_edit_desc.hidden(v);
-    button_delete.hidden(v);
-    text_empty.hidden(!v);
-    freqlist_view.hidden(v);
-    labels.hidden(v);
-    // display.fill_rectangle(freqlist_view.screen_rect(), Color::black());
-    set_dirty();
+void FrequencyManagerView::on_add_entry() {
+    freqman_entry entry{
+        .frequency_a = 100'000'000,
+        .description = std::string{"Entry "} + to_string_dec_uint(db_.entry_count()),
+        .type = freqman_type::Single,
+    };
+
+    // Add will insert below the currently selected item.
+    db_.insert_entry(current_index() + 1, entry);
+    refresh_list(1);
 }
 
-FrequencyManagerView::~FrequencyManagerView() {
-    // save_freqman_file(file_list[categories[current_category_id].second], database);
+void FrequencyManagerView::on_del_entry() {
+    if (db_.empty())
+        return;
+
+    nav_.push<ModalMessageView>(
+        "Delete", "Delete " + trim(pretty_string(current_entry(), 23)) + "\nAre you sure?", YESNO,
+        [this](bool choice) {
+            if (choice) {
+                db_.delete_entry(current_index());
+                refresh_list();
+            }
+        });
 }
 
 FrequencyManagerView::FrequencyManagerView(
     NavigationView& nav)
     : FreqManBaseView(nav) {
-    on_refresh_widgets = [this](bool v) {
-        refresh_widgets(v);
+    add_children(
+        {&freqlist_view,
+         &button_add_category,
+         &button_del_category,
+         &button_edit_entry,
+         &rect_padding,
+         &button_edit_freq,
+         &button_edit_desc,
+         &button_add_entry,
+         &button_del_entry});
+
+    freqlist_view.on_select = [this](size_t) {
+        button_edit_entry.focus();
+    };
+    // Allows for quickly exiting control.
+    freqlist_view.on_leave = [this]() {
+        button_edit_entry.focus();
     };
 
-    add_children({&labels,
-                  &button_new_category,
-                  &freqlist_view,
-                  &text_empty,
-                  &button_edit_freq,
-                  &button_edit_desc,
-                  &button_delete});
-
-    freqlist_view.on_select = [this](FreqManUIList&) {
-        button_edit_freq.focus();
+    button_add_category.on_select = [this]() {
+        on_add_category();
     };
 
-    button_new_category.on_select = [this, &nav](Button&) {
-        desc_buffer = "";
-        on_new_category(nav);
+    button_del_category.on_select = [this]() {
+        on_del_category();
     };
 
-    button_edit_freq.on_select = [this, &nav](Button&) {
-        if (database.empty()) {
-            database.push_back({0, 0, "", SINGLE});
-        }
-        auto new_view = nav.push<FrequencyKeypadView>(database[freqlist_view.get_index()].frequency_a);
-        new_view->on_changed = [this](rf::Frequency f) {
-            on_edit_freq(f);
-        };
+    button_edit_entry.on_select = [this](Button&) {
+        on_edit_entry();
     };
 
-    button_edit_desc.on_select = [this, &nav](Button&) {
-        if (database.empty()) {
-            database.push_back({0, 0, "", SINGLE});
-        }
-        desc_buffer = database[freqlist_view.get_index()].description;
-        on_edit_desc(nav);
+    button_edit_freq.on_select = [this](Button&) {
+        on_edit_freq();
     };
 
-    button_delete.on_select = [this, &nav](Button&) {
-        on_delete();
+    button_edit_desc.on_select = [this](Button&) {
+        on_edit_desc();
+    };
+
+    button_add_entry.on_select = [this]() {
+        on_add_entry();
+    };
+
+    button_del_entry.on_select = [this]() {
+        on_del_entry();
     };
 }
 
+/* FrequencyEditView *************************************/
+
+FrequencyEditView::FrequencyEditView(
+    NavigationView& nav,
+    freqman_entry entry)
+    : nav_{nav},
+      entry_{std::move(entry)} {
+    add_children({&labels,
+                  &field_type,
+                  &field_freq_a,
+                  &field_freq_b,
+                  &field_modulation,
+                  &field_bandwidth,
+                  &field_step,
+                  &field_tone,
+                  &field_description,
+                  &text_validation,
+                  &button_save,
+                  &button_cancel});
+
+    freqman_set_modulation_option(field_modulation);
+    populate_bandwidth_options();
+    populate_step_options();
+    populate_tone_options();
+
+    // Add the "invalid/unset" option. Kind of hacky, but...
+    field_modulation.options().insert(
+        field_modulation.options().begin(), {"None", -1});
+    field_step.options().insert(
+        field_step.options().begin(), {"None", -1});
+
+    field_type.set_by_value((int32_t)entry_.type);
+    field_type.on_change = [this](size_t, auto value) {
+        entry_.type = static_cast<freqman_type>(value);
+        refresh_ui();
+    };
+
+    // TODO: this pattern should be able to be wrapped up.
+    field_freq_a.set_value(entry_.frequency_a);
+    field_freq_a.on_change = [this](rf::Frequency f) {
+        entry_.frequency_a = f;
+        refresh_ui();
+    };
+    field_freq_a.on_edit = [this]() {
+        auto freq_view = nav_.push<FrequencyKeypadView>(field_freq_a.value());
+        freq_view->on_changed = [this](rf::Frequency f) {
+            field_freq_a.set_value(f);
+        };
+    };
+
+    field_freq_b.set_value(entry_.frequency_b);
+    field_freq_b.on_change = [this](rf::Frequency f) {
+        entry_.frequency_b = f;
+        refresh_ui();
+    };
+    field_freq_b.on_edit = [this]() {
+        auto freq_view = nav_.push<FrequencyKeypadView>(field_freq_b.value());
+        freq_view->on_changed = [this](rf::Frequency f) {
+            field_freq_b.set_value(f);
+        };
+    };
+
+    field_modulation.set_by_value((int32_t)entry_.modulation);
+    field_modulation.on_change = [this](size_t, auto value) {
+        entry_.modulation = static_cast<freqman_index_t>(value);
+        populate_bandwidth_options();
+    };
+
+    field_bandwidth.set_by_value((int32_t)entry_.bandwidth);
+    field_bandwidth.on_change = [this](size_t, auto value) {
+        entry_.bandwidth = static_cast<freqman_index_t>(value);
+    };
+
+    field_step.set_by_value((int32_t)entry_.step);
+    field_step.on_change = [this](size_t, auto value) {
+        entry_.step = static_cast<freqman_index_t>(value);
+    };
+
+    field_tone.set_by_value((int32_t)entry_.tone);
+    field_tone.on_change = [this](size_t, auto value) {
+        entry_.tone = static_cast<freqman_index_t>(value);
+    };
+
+    field_description.set_text(entry_.description);
+    field_description.on_change = [this](TextField& tf) {
+        entry_.description = tf.get_text();
+    };
+    field_description.on_select = [this](TextField& tf) {
+        temp_buffer_ = tf.get_text();
+        text_prompt(nav_, temp_buffer_, FreqManBaseView::desc_edit_max,
+                    [this, &tf](std::string& new_desc) {
+                        tf.set_text(new_desc);
+                    });
+    };
+
+    button_save.on_select = [this](Button&) {
+        if (on_save)
+            on_save(std::move(entry_));
+        nav_.pop();
+    };
+
+    button_cancel.on_select = [this](Button&) {
+        nav_.pop();
+    };
+
+    refresh_ui();
+}
+
+void FrequencyEditView::focus() {
+    button_cancel.focus();
+}
+
+void FrequencyEditView::refresh_ui() {
+    // This needs to be called whenever a UI option is changed
+    // in a way that causes fields to be unused or would make the
+    // entry fail validation.
+
+    auto is_range = entry_.type == freqman_type::Range;
+    auto is_ham = entry_.type == freqman_type::HamRadio;
+    auto has_freq_b = is_range || is_ham;
+
+    field_freq_b.set_style(has_freq_b ? &Styles::white : &Styles::grey);
+    field_step.set_style(is_range ? &Styles::white : &Styles::grey);
+    field_tone.set_style(is_ham ? &Styles::white : &Styles::grey);
+
+    if (is_valid(entry_)) {
+        text_validation.set("Valid");
+        text_validation.set_style(&Styles::green);
+    } else {
+        text_validation.set("Error");
+        text_validation.set_style(&Styles::red);
+    }
+}
+
+// TODO: The following functions shouldn't be needed once
+// freqman_db lookup tables are complete.
+void FrequencyEditView::populate_bandwidth_options() {
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    if (entry_.modulation < std::size(freqman_bandwidths)) {
+        auto& bandwidths = freqman_bandwidths[entry_.modulation];
+        for (auto i = 0u; i < bandwidths.size(); ++i) {
+            auto& item = bandwidths[i];
+            options.push_back({item.first, (OptionsField::value_t)i});
+        }
+    }
+
+    field_bandwidth.set_options(std::move(options));
+}
+
+void FrequencyEditView::populate_step_options() {
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    for (auto i = 0u; i < freqman_steps.size(); ++i) {
+        auto& item = freqman_steps[i];
+        options.push_back({item.first, (OptionsField::value_t)i});
+    }
+
+    field_step.set_options(std::move(options));
+}
+
+void FrequencyEditView::populate_tone_options() {
+    using namespace tonekey;
+    OptionsField::options_t options;
+    options.push_back({"None", -1});
+
+    for (auto i = 0u; i < tone_keys.size(); ++i) {
+        auto& item = tone_keys[i];
+        options.push_back({fx100_string(item.second), (OptionsField::value_t)i});
+    }
+
+    field_tone.set_options(std::move(options));
+}
+
 }  // namespace ui

firmware/application/apps/ui_freqman.hpp

@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
  * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -20,94 +21,99 @@
  * Boston, MA 02110-1301, USA.
  */
 
+#include "freqman.hpp"
+#include "freqman_db.hpp"
 #include "ui.hpp"
-#include "ui_widget.hpp"
-#include "ui_painter.hpp"
+#include "ui_freqlist.hpp"
 #include "ui_menu.hpp"
 #include "ui_navigation.hpp"
+#include "ui_painter.hpp"
 #include "ui_receiver.hpp"
 #include "ui_textentry.hpp"
-#include "freqman.hpp"
-#include "ui_freqlist.hpp"
+#include "ui_widget.hpp"
 
 namespace ui {
 
 class FreqManBaseView : public View {
    public:
-    FreqManBaseView(
-        NavigationView& nav);
+    FreqManBaseView(NavigationView& nav);
 
     void focus() override;
 
+    static constexpr size_t desc_edit_max = 0x80;
+
    protected:
-    using option_t = std::pair<std::string, int32_t>;
-    using options_t = std::vector<option_t>;
+    using options_t = OptionsField::options_t;
 
     NavigationView& nav_;
     freqman_error error_{NO_ERROR};
-    options_t categories{};
-    std::function<void(void)> on_select_frequency{nullptr};
-    std::function<void(bool)> on_refresh_widgets{nullptr};
+    std::function<void(void)> on_select_frequency{};
 
-    void get_freqman_files();
-    void change_category(int32_t category_id);
-    void refresh_list();
+    void change_category(size_t new_index);
+    /* Access the categories directly from the OptionsField.
+     * This avoids holding multiple copies of the file list. */
+    const options_t& categories() const { return options_category.options(); }
+    const auto& current_category() const { return options_category.selected_index_name(); }
+    auto current_index() const { return freqlist_view.get_index(); }
+    freqman_entry current_entry() const { return db_[current_index()]; }
+    void refresh_categories();
+    void refresh_list(int delta_selected = 0);
 
-    freqman_db database{};
-    std::vector<std::string> file_list{};
+    FreqmanDB db_{};
 
+    /* The top section (category) is 20px tall. */
     Labels label_category{
-        {{0, 4}, "Category:", Color::light_grey()}};
+        {{0, 2}, "Category:", Color::light_grey()}};
 
     OptionsField options_category{
-        {9 * 8, 4},
-        14,
+        {9 * 8, 2},
+        14 /* length */,
         {}};
 
     FreqManUIList freqlist_view{
-        {0, 3 * 8, 240, 23 * 8}};
-
-    Text text_empty{
-        {7 * 8, 12 * 8, 16 * 8, 16},
-        "Empty category !",
-    };
+        {0, 3 * 8, screen_width, 12 * 16 + 2 /* 2 Keeps text out of border. */}};
 
     Button button_exit{
-        {16 * 8, 34 * 8, 14 * 8, 4 * 8},
+        {15 * 8, 17 * 16, 15 * 8, 2 * 16},
         "Exit"};
 
-   private:
+   protected:
+    /* Static so selected category is persisted across UI instances. */
+    static size_t current_category_index;
 };
 
+// TODO: support for new category.
 class FrequencySaveView : public FreqManBaseView {
    public:
     FrequencySaveView(NavigationView& nav, const rf::Frequency value);
-
-    std::string title() const override { return "Save freq."; };
+    std::string title() const override { return "Save freq"; }
 
    private:
-    std::string desc_buffer{};
-    rf::Frequency value_{};
+    std::string temp_buffer_{};
+    freqman_entry entry_{};
 
-    void on_save_name();
-    void on_save_timestamp();
-    void save_current_file();
+    void refresh_ui();
 
     BigFrequency big_display{
-        {4, 2 * 16, 28 * 8, 32},
+        {0, 2 * 16, 28 * 8, 4 * 16},
         0};
 
     Labels labels{
-        {{1 * 8, 12 * 8}, "Save as:", Color::white()}};
+        {{0 * 8, 6 * 16}, "Description:", Color::white()}};
 
-    Button button_save_name{
-        {1 * 8, 17 * 8, 12 * 8, 48},
-        "Name (set)"};
-    Button button_save_timestamp{
-        {1 * 8, 25 * 8, 12 * 8, 48},
-        "Timestamp:"};
-    LiveDateTime live_timestamp{
-        {14 * 8, 27 * 8, 16 * 8, 16}};
+    Text text_description{{0 * 8, 7 * 16, 30 * 8, 1 * 16}};
+
+    Button button_clear{
+        {4 * 8, 10 * 16, 10 * 8, 2 * 16},
+        "Clear"};
+
+    Button button_edit{
+        {16 * 8, 10 * 16, 10 * 8, 2 * 16},
+        "Edit"};
+
+    Button button_save{
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Save"};
 };
 
 class FrequencyLoadView : public FreqManBaseView {
@@ -116,47 +122,146 @@ class FrequencyLoadView : public FreqManBaseView {
     std::function<void(rf::Frequency, rf::Frequency)> on_range_loaded{};
 
     FrequencyLoadView(NavigationView& nav);
-    ~FrequencyLoadView();
-
-    std::string title() const override { return "Load freq."; };
-
-   private:
-    void refresh_widgets(const bool v);
+    std::string title() const override { return "Load freq"; }
 };
 
 class FrequencyManagerView : public FreqManBaseView {
    public:
     FrequencyManagerView(NavigationView& nav);
-    ~FrequencyManagerView();
-
-    std::string title() const override { return "Freqman"; };
+    std::string title() const override { return "Freqman"; }
 
    private:
-    std::string desc_buffer{};
+    std::string temp_buffer_{};
 
-    void refresh_widgets(const bool v);
-    void on_edit_freq(rf::Frequency f);
-    void on_edit_desc(NavigationView& nav);
-    void on_new_category(NavigationView& nav);
-    void on_delete();
+    void on_edit_entry();
+    void on_edit_freq();
+    void on_edit_desc();
+    void on_add_category();
+    void on_del_category();
+    void on_add_entry();
+    void on_del_entry();
 
-    Labels labels{
-        {{4 * 8 + 4, 26 * 8}, "Edit:", Color::light_grey()}};
+    NewButton button_add_category{
+        {23 * 8, 0 * 16, 7 * 4, 20},
+        {},
+        &bitmap_icon_new_file,
+        Color::white(),
+        true};
 
-    Button button_new_category{
-        {23 * 8, 2, 7 * 8, 20},
-        "New"};
+    NewButton button_del_category{
+        {26 * 8 + 4, 0 * 16, 7 * 4, 20},
+        {},
+        &bitmap_icon_trash,
+        Color::red(),
+        true};
+
+    Button button_edit_entry{
+        {0 * 8, 14 * 16 - 4, 15 * 8, 1 * 16 + 4},
+        "Edit"};
+
+    Rectangle rect_padding{
+        {15 * 8, 14 * 16 - 4, 15 * 8, 1 * 16 + 4},
+        Color::grey()};
 
     Button button_edit_freq{
-        {0 * 8, 29 * 8, 14 * 8, 32},
+        {0 * 8, 15 * 16, 15 * 8, 2 * 16},
         "Frequency"};
+
     Button button_edit_desc{
-        {0 * 8, 34 * 8, 14 * 8, 32},
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
         "Description"};
 
-    Button button_delete{
-        {16 * 8, 29 * 8, 14 * 8, 32},
-        "Delete"};
+    NewButton button_add_entry{
+        {15 * 8, 15 * 16, 7 * 8 + 4, 2 * 16},
+        {},
+        &bitmap_icon_add,
+        Color::white(),
+        true};
+
+    NewButton button_del_entry{
+        {22 * 8 + 4, 15 * 16, 7 * 8 + 4, 2 * 16},
+        {},
+        &bitmap_icon_delete,
+        Color::red(),
+        true};
+};
+
+class FrequencyEditView : public View {
+   public:
+    std::function<void(const freqman_entry&)> on_save{};
+
+    FrequencyEditView(
+        NavigationView& nav,
+        freqman_entry entry);
+    std::string title() const override { return "Freqman Edit"; }
+
+    void focus() override;
+
+   private:
+    NavigationView& nav_;
+    freqman_entry entry_;
+    std::string temp_buffer_{};
+
+    void refresh_ui();
+    void populate_bandwidth_options();
+    void populate_step_options();
+    void populate_tone_options();
+
+    Labels labels{
+        {{5 * 8, 1 * 16}, "Edit Frequency Entry", Color::white()},
+        {{0 * 8, 3 * 16}, "Entry Type :", Color::light_grey()},
+        {{0 * 8, 4 * 16}, "Frequency A:", Color::light_grey()},
+        {{0 * 8, 5 * 16}, "Frequency B:", Color::light_grey()},
+        {{0 * 8, 6 * 16}, "Modulation :", Color::light_grey()},
+        {{0 * 8, 7 * 16}, "Bandwidth  :", Color::light_grey()},
+        {{0 * 8, 8 * 16}, "Step       :", Color::light_grey()},
+        {{0 * 8, 9 * 16}, "Tone Freq  :", Color::light_grey()},
+        {{0 * 8, 10 * 16}, "Description:", Color::light_grey()},
+    };
+
+    OptionsField field_type{
+        {13 * 8, 3 * 16},
+        8,
+        {
+            {"Single", 0},
+            {"Range", 1},
+            {"HamRadio", 2},
+            {"Raw", 3},
+        }};
+
+    FrequencyField field_freq_a{{13 * 8, 4 * 16}};
+
+    FrequencyField field_freq_b{{13 * 8, 5 * 16}};
+
+    OptionsField field_modulation{{13 * 8, 6 * 16}, 5, {}};
+
+    OptionsField field_bandwidth{{13 * 8, 7 * 16}, 7, {}};
+
+    OptionsField field_step{{13 * 8, 8 * 16}, 12, {}};
+
+    OptionsField field_tone{{13 * 8, 9 * 16}, 13, {}};
+
+    TextField field_description{
+        {13 * 8, 10 * 16, 17 * 8, 1 * 16},
+        {}};
+
+    Text text_validation{
+        {12 * 8, 12 * 16, 5 * 8, 1 * 16},
+        {}};
+
+    Button button_save{
+        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Save"};
+
+    Button button_cancel{
+        {15 * 8, 17 * 16, 15 * 8, 2 * 16},
+        "Cancel"};
 };
 
 } /* namespace ui */
+
+void freqman_set_bandwidth_option(freqman_index_t modulation, ui::OptionsField& option);
+void freqman_set_modulation_option(ui::OptionsField& option);
+void freqman_set_step_option(ui::OptionsField& option);
+void freqman_set_step_option_short(ui::OptionsField& option);
+void freqman_set_tone_option(ui::OptionsField& option);

firmware/application/apps/ui_level.cpp

@@ -23,9 +23,11 @@
 
 #include "ui_level.hpp"
 #include "ui_fileman.hpp"
+#include "ui_freqman.hpp"
 #include "file.hpp"
 
 using namespace portapack;
+using namespace tonekey;
 using portapack::memory::map::backup_ram;
 
 namespace ui {
@@ -212,6 +214,12 @@ size_t LevelView::change_mode(freqman_index_t new_mod) {
         default:
             break;
     }
+    if (new_mod != SPEC_MODULATION) {
+        // reset receiver model to fix bug when going from SPEC to audio, the sound is distorded
+        receiver_model.set_sampling_rate(3072000);
+        receiver_model.set_baseband_bandwidth(1750000);
+    }
+
     return step_mode.selected_index();
 }
 

firmware/application/apps/ui_level.hpp

@@ -24,21 +24,21 @@
 #ifndef _UI_LEVEL
 #define _UI_LEVEL
 
-#include "ui.hpp"
-#include "receiver_model.hpp"
-#include "ui_receiver.hpp"
-#include "ui_styles.hpp"
-#include "freqman.hpp"
 #include "analog_audio_app.hpp"
-#include "audio.hpp"
-#include "ui_mictx.hpp"
-#include "portapack_persistent_memory.hpp"
-#include "baseband_api.hpp"
-#include "ui_spectrum.hpp"
-#include "string_format.hpp"
-#include "file.hpp"
 #include "app_settings.hpp"
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "file.hpp"
+#include "freqman_db.hpp"
+#include "portapack_persistent_memory.hpp"
 #include "radio_state.hpp"
+#include "receiver_model.hpp"
+#include "string_format.hpp"
+#include "ui.hpp"
+#include "ui_mictx.hpp"
+#include "ui_receiver.hpp"
+#include "ui_spectrum.hpp"
+#include "ui_styles.hpp"
 
 namespace ui {
 

firmware/application/apps/ui_mictx.cpp

@@ -22,21 +22,21 @@
 
 #include "ui_mictx.hpp"
 
-#include "baseband_api.hpp"
 #include "audio.hpp"
-
-#include "wm8731.hpp"
-using wolfson::wm8731::WM8731;
-
-#include "tonesets.hpp"
+#include "baseband_api.hpp"
+#include "irq_controls.hpp"
+#include "ui_freqman.hpp"
 #include "portapack_hal.hpp"
 #include "string_format.hpp"
-#include "irq_controls.hpp"
+#include "tonesets.hpp"
+#include "ui_tone_key.hpp"
+#include "wm8731.hpp"
 
 #include <cstring>
 
 using namespace tonekey;
 using namespace portapack;
+using wolfson::wm8731::WM8731;
 
 WM8731 audio_codec_wm8731{i2c0, 0x1a};
 
@@ -356,13 +356,10 @@ MicTXView::MicTXView(
                 rxaudio(rx_enabled);         // Update now if we have RX audio on
                 options_tone_key.hidden(0);  // we are in FM mode, we should have active the Key-tones & CTCSS option.
 
-                rxbw.emplace_back(" NFM1:8k5  ", 0);  // restore the original dynamic field_rxbw value.
-                rxbw.emplace_back(" NFM2:11k  ", 1);
-                rxbw.emplace_back(" FM  :16k  ", 2);
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                field_rxbw.hidden(0);  // we are in FM mode, we need to allow the user set up of the RX NFM BW selection (8K5, 11K, 16K)
-                field_bw.hidden(0);    // we are in FM mode, we need to allow FM deviation parameter, in non FM mode.
+                freqman_set_bandwidth_option(NFM_MODULATION, field_rxbw);  // restore dynamic field_rxbw value with NFM options from freqman_db.cpp
+                field_rxbw.set_by_value(2);                                // // bw 16k (2) default
+                field_rxbw.hidden(0);                                      // we are in FM mode, we need to allow the user set up of the RX NFM BW selection (8K5, 11K, 16K)
+                field_bw.hidden(0);                                        // we are in FM mode, we need to allow FM deviation parameter, in non FM mode.
                 break;
             case 1:  //{ "WFM", 1 }
                 enable_am = false;
@@ -376,13 +373,10 @@ MicTXView::MicTXView(
                 rxaudio(rx_enabled);         // Update now if we have RX audio on
                 options_tone_key.hidden(0);  // we are in WFM mode, we should have active the Key-tones & CTCSS option.
 
-                rxbw.emplace_back("  200k-WFM ", 0);  // We allow the user selection of the 3 x WFM BW filters, (0) WFM-200K, (1) WFM-180K, (2) WFM-40K.
-                rxbw.emplace_back("  180k-WFM ", 1);
-                rxbw.emplace_back("   40k-WFM ", 2);
-                field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
-
-                field_rxbw.hidden(0);  // we are in WFM mode, we need to show to the user the selected BW WFM filter.
-                field_bw.hidden(0);    // we are in WFM mode, we need to allow WFM deviation parameter, in non FM mode.
+                freqman_set_bandwidth_option(WFM_MODULATION, field_rxbw);  // restore dynamic field_rxbw value with WFM options from freqman_db.cpp
+                field_rxbw.set_by_value(0);                                // bw 200k (0) default
+                field_rxbw.hidden(0);                                      // we are in WFM mode, we need to show to the user the selected BW WFM filter.
+                field_bw.hidden(0);                                        // we are in WFM mode, we need to allow WFM deviation parameter, in non FM mode.
                 break;
             case 2:  //{ "AM", 2 }
                 enable_am = true;
@@ -391,8 +385,8 @@ MicTXView::MicTXView(
                 set_dirty();                             // Refresh display
                 options_tone_key.hidden(1);              // we hide that Key-tones & CTCSS input selecction, (no meaning in AM/DSB/SSB).
 
-                rxbw.emplace_back(" DSB1-9k   ", 0);  // we offer in AM DSB two audio BW 9k / 6k.
-                rxbw.emplace_back(" DSB2-6k   ", 1);
+                rxbw.emplace_back("DSB 9k", 0);  // we offer in AM DSB two audio BW 9k / 6k.
+                rxbw.emplace_back("DSB 6k", 1);
                 field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
 
                 field_rxbw.hidden(0);       // we show fixed RX AM BW 6Khz
@@ -405,8 +399,8 @@ MicTXView::MicTXView(
                 check_rogerbeep.set_value(false);  // reset the possible activation of roger beep, because it is not compatible with SSB, by now.
                 check_rogerbeep.hidden(1);         // hide that roger beep selection.
 
-                rxbw.emplace_back("  USB+3k   ", 0);  // locked a fixed option, to display it.
-                field_rxbw.set_options(rxbw);         // store that aux GUI option to the field_rxbw.
+                rxbw.emplace_back("USB+3k", 0);  // locked a fixed option, to display it.
+                field_rxbw.set_options(rxbw);    // store that aux GUI option to the field_rxbw.
 
                 set_dirty();  // Refresh display
                 break;
@@ -416,8 +410,8 @@ MicTXView::MicTXView(
                 check_rogerbeep.set_value(false);  // reset the possible activation of roger beep, because it is not compatible with SSB, by now.
                 check_rogerbeep.hidden(1);         // hide that roger beep selection.
 
-                rxbw.emplace_back("  LSB-3k   ", 0);  // locked a fixed option, to display it.
-                field_rxbw.set_options(rxbw);         // store that aux GUI option to the field_rxbw.
+                rxbw.emplace_back("LSB-3k", 0);  // locked a fixed option, to display it.
+                field_rxbw.set_options(rxbw);    // store that aux GUI option to the field_rxbw.
 
                 set_dirty();  // Refresh display
                 break;
@@ -426,8 +420,8 @@ MicTXView::MicTXView(
                 rxaudio(rx_enabled);        // Update now if we have RX audio on
                 check_rogerbeep.hidden(0);  // make visible again the "rogerbeep" selection.
 
-                rxbw.emplace_back("SSB1:USB+3k", 0);  // added dynamically two options (index 0,1) to that DSB-C case to the field_rxbw value.
-                rxbw.emplace_back("SSB2:LSB-3k", 1);
+                rxbw.emplace_back("USB+3k", 0);  // added dynamically two options (index 0,1) to that DSB-SC case to the field_rxbw value.
+                rxbw.emplace_back("LSB-3k", 1);
 
                 field_rxbw.set_options(rxbw);  // store that aux GUI option to the field_rxbw.
 

firmware/application/apps/ui_mictx.hpp

@@ -35,7 +35,6 @@
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
 #include "transmitter_model.hpp"
-#include "tone_key.hpp"
 #include "message.hpp"
 #include "receiver_model.hpp"
 #include "ui_transmitter.hpp"
@@ -181,7 +180,7 @@ class MicTXView : public View {
 
     OptionsField options_ak4951_alc_mode{
         {20 * 8, 1 * 8},
-        11,
+        10,  // Label has 10 chars
         {
             {" OFF-12kHz", 0},   // Nothing changed from ORIGINAL, keeping ALL programmable AK4951 Digital Block->OFF, sampling 24Khz)
             {"+12dB-6kHz", 1},   // ALC-> on, (+12dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
@@ -199,7 +198,7 @@ class MicTXView : public View {
 
     OptionsField options_wm8731_boost_mode{
         {22 * 8, 1 * 8},
-        5,
+        8,  // Label has 8 chars
         {
             {"ON +12dB", 0},  // WM8731 Mic Boost ON, original+12dBs condition, easy to saturate ADC sat in high voice, relative G = +12 dB's respect ref level
             {"ON +06dB", 1},  // WM8731 Mic Boost ON, original+6 dBs condition, easy to saturate ADC sat in high voice, relative G = +06 dB's respect ref level
@@ -299,11 +298,11 @@ class MicTXView : public View {
 
     OptionsField field_rxbw{
         {19 * 8, (23 * 8) + 2},
-        3,
+        7,
         {
-            {" NFM1:8k5  ", 0},
-            {" NFM2:11k  ", 1},
-            {" FM  :16k  ", 2},
+            {" 8k5  ", 0},  // Initial dynamic values when we start Mic App.
+            {" 11k  ", 1},
+            {" 16k  ", 2},
         }};
 
     NumberField field_squelch{

firmware/application/apps/ui_playlist.cpp

@@ -27,6 +27,8 @@
 #include "convert.hpp"
 #include "file_reader.hpp"
 #include "io_file.hpp"
+#include "io_convert.hpp"
+
 #include "string_format.hpp"
 #include "ui_fileman.hpp"
 #include "utility.hpp"
@@ -48,7 +50,6 @@ namespace fs = std::filesystem;
 namespace ui {
 
 // TODO: consolidate extesions into a shared header?
-static const fs::path c16_ext = u".C16";
 static const fs::path ppl_ext = u".PPL";
 
 void PlaylistView::load_file(const fs::path& playlist_path) {
@@ -258,7 +259,7 @@ void PlaylistView::send_current_track() {
         chThdSleepMilliseconds(current()->ms_delay);
 
     // Open the sample file to send.
-    auto reader = std::make_unique<FileReader>();
+    auto reader = std::make_unique<FileConvertReader>();
     auto error = reader->open(current()->path);
     if (error) {
         show_file_error(current()->path, "Can't open file to send.");
@@ -323,9 +324,10 @@ void PlaylistView::update_ui() {
         chDbgAssert(!at_end(), "update_ui #1", "current_index_ invalid");
 
         text_filename.set(current()->path.filename().string());
-        text_sample_rate.set(unit_auto_scale(current()->metadata.sample_rate, 3, 0) + "Hz");
+        text_sample_rate.set(unit_auto_scale(current()->metadata.sample_rate, 3, (current()->metadata.sample_rate > 1000000) ? 2 : 0) + "Hz");
 
-        auto duration = ms_duration(current()->file_size, current()->metadata.sample_rate, 4);
+        uint8_t sample_size = capture_file_sample_size(current()->path);
+        auto duration = ms_duration(current()->file_size, current()->metadata.sample_rate, sample_size);
         text_duration.set(to_string_time_ms(duration));
         field_frequency.set_value(current()->metadata.center_frequency);
 
@@ -336,7 +338,7 @@ void PlaylistView::update_ui() {
 
         progressbar_track.set_max(playlist_db_.size() - 1);
         progressbar_track.set_value(current_index_);
-        progressbar_transmit.set_max(current()->file_size);
+        progressbar_transmit.set_max(current()->file_size * sizeof(complex16_t) / sample_size);
     }
 
     button_play.set_bitmap(is_active() ? &bitmap_stop : &bitmap_play);
@@ -406,7 +408,7 @@ PlaylistView::PlaylistView(
     button_add.on_select = [this, &nav]() {
         if (is_active())
             return;
-        auto open_view = nav_.push<FileLoadView>(".C16");
+        auto open_view = nav_.push<FileLoadView>(".C*");
         open_view->push_dir(u"CAPTURES");
         open_view->on_changed = [this](fs::path path) {
             add_entry(std::move(path));
@@ -459,7 +461,7 @@ PlaylistView::PlaylistView(
     auto ext = path.extension();
     if (path_iequal(ext, ppl_ext))
         on_file_changed(path);
-    else if (path_iequal(ext, c16_ext))
+    else if (is_cxx_capture_file(path))
         add_entry(fs::path{path});
 }
 

firmware/application/apps/ui_recon.cpp

@@ -23,13 +23,28 @@
 
 #include "ui_recon.hpp"
 #include "ui_fileman.hpp"
+#include "ui_freqman.hpp"
+#include "capture_app.hpp"
+#include "convert.hpp"
 #include "file.hpp"
+#include "file_reader.hpp"
+#include "tone_key.hpp"
 
 using namespace portapack;
+using namespace tonekey;
 using portapack::memory::map::backup_ram;
+namespace fs = std::filesystem;
 
 namespace ui {
 
+bool ReconView::current_is_valid() {
+    return (unsigned)current_index < frequency_list.size();
+}
+
+freqman_entry& ReconView::current_entry() {
+    return *frequency_list[current_index];
+}
+
 void ReconView::set_loop_config(bool v) {
     continuous = v;
     button_loop_config.set_style(v ? &Styles::green : &Styles::white);
@@ -38,6 +53,10 @@ void ReconView::set_loop_config(bool v) {
 
 void ReconView::recon_stop_recording() {
     if (is_recording) {
+        if (field_mode.selected_index_value() == SPEC_MODULATION)
+            button_audio_app.set_text("RAW");
+        else
+            button_audio_app.set_text("AUDIO");
         button_audio_app.set_style(&Styles::white);
         record_view->stop();
         button_config.set_style(&Styles::white);  // disable config while recording as it's causing an IO error pop up at exit
@@ -51,22 +70,41 @@ void ReconView::clear_freqlist_for_ui_action() {
         audio::output::stop();
     // flag to detect and reload frequency_list
     if (!manual_mode) {
-        // clear and shrink_to_fit are not enough to really start with a new, clean, empty vector
-        // swap is the only way to achieve a perfect memory liberation
-        std::vector<freqman_entry>().swap(frequency_list);
+        // Clear doesn't actually free, re-assign so destructor runs on previous instance.
+        frequency_list = freqman_db{};
     } else
         frequency_list.shrink_to_fit();
     freqlist_cleared_for_ui_action = true;
 }
 
 void ReconView::reset_indexes() {
-    last_entry.modulation = -1;
-    last_entry.bandwidth = -1;
-    last_entry.step = -1;
-    description = "...no description...";
+    last_entry.modulation = freqman_invalid_index;
+    last_entry.bandwidth = freqman_invalid_index;
+    last_entry.step = freqman_invalid_index;
     current_index = 0;
 }
 
+void ReconView::update_description() {
+    if (frequency_list.empty() || current_entry().description.empty()) {
+        description = "...no description...";
+        return;
+    } else {
+        switch (current_entry().type) {
+            case freqman_type::Range:
+                description = "R: ";
+                break;
+            case freqman_type::HamRadio:
+                description = "H: ";
+                break;
+            default:
+                description = "S: ";
+        }
+        description += current_entry().description;
+    }
+
+    desc_cycle.set(description);
+}
+
 void ReconView::colorize_waits() {
     // colorize wait on match
     if (wait == 0) {
@@ -90,152 +128,81 @@ void ReconView::colorize_waits() {
     }
 }
 
-bool ReconView::recon_save_freq(const std::string& freq_file_path, size_t freq_index, bool warn_if_exists) {
-    File recon_file;
-
-    if (frequency_list.size() == 0 || (frequency_list.size() && current_index > (int32_t)frequency_list.size()))
+bool ReconView::recon_save_freq(const fs::path& path, size_t freq_index, bool warn_if_exists) {
+    if (frequency_list.size() == 0 || !current_is_valid())
         return false;
 
-    freqman_entry entry = frequency_list[freq_index];
-    entry.frequency_a = freq;
-    entry.frequency_b = 0;
-    entry.modulation = last_entry.modulation;
-    entry.bandwidth = last_entry.bandwidth;
-    entry.type = SINGLE;
+    FreqmanDB freq_db;
+    if (!freq_db.open(path, /*create*/ true))
+        return false;
 
-    std::string frequency_to_add;
-    get_freq_string(entry, frequency_to_add);
+    freqman_entry entry = *frequency_list[freq_index];  // Makes a copy.
 
-    auto result = recon_file.open(freq_file_path);  // First recon if freq is already in txt
-    if (!result.is_valid()) {
-        char one_char[1]{};  // Read it char by char
-        std::string line{};  // and put read line in here
-        bool found{false};
-        for (size_t pointer = 0; pointer < recon_file.size(); pointer++) {
-            recon_file.seek(pointer);
-            recon_file.read(one_char, 1);
-            if ((int)one_char[0] > 31) {       // ascii space upwards
-                line += one_char[0];           // add it to the textline
-            } else if (one_char[0] == '\n') {  // New Line
-                if (line.compare(0, frequency_to_add.size(), frequency_to_add) == 0) {
-                    found = true;
-                    break;
-                }
-                line.clear();  // Ready for next textline
-            }
-        }
-        if (!found) {
-            result = recon_file.append(freq_file_path);  // Second: append if it is not there
-            if (!result.is_valid()) {
-                recon_file.write_line(frequency_to_add);
-            }
-        }
-        if (found && warn_if_exists) {
-            nav_.display_modal("Error", "Frequency already exists");
-        }
-    } else {
-        result = recon_file.create(freq_file_path);  // First freq if no output file
-        if (!result.is_valid()) {
-            recon_file.write_line(frequency_to_add);
-        }
+    // For ranges, save the current frequency instead.
+    if (entry.type == freqman_type::Range) {
+        entry.frequency_a = freq;
+        entry.frequency_b = 0;
+        entry.type = freqman_type::Single;
+        entry.modulation = last_entry.modulation;
+        entry.bandwidth = last_entry.bandwidth;
+        entry.step = freqman_invalid_index;
     }
+
+    auto it = freq_db.find_entry(entry);
+    auto found = (it != freq_db.end());
+
+    if (found && warn_if_exists)
+        nav_.display_modal("Error", "Frequency already exists");
+
+    if (!found)
+        freq_db.append_entry(entry);
+
     return true;
 }
 
 bool ReconView::recon_load_config_from_sd() {
-    File settings_file{};
-    size_t length{0};
-    size_t file_position{0};
-    char* pos{NULL};
-    char* line_start{NULL};
-    char* line_end{NULL};
-    char file_data[257]{};
-    uint32_t it{0};
-    uint32_t nb_params{RECON_SETTINGS_NB_PARAMS};
-    std::string params[RECON_SETTINGS_NB_PARAMS]{};
-
     make_new_directory(u"SETTINGS");
 
-    auto result = settings_file.open(RECON_CFG_FILE);
-    if (!result.is_valid()) {
-        while (it < nb_params) {
-            // Read a 256 bytes block from file
-            settings_file.seek(file_position);
-            memset(file_data, 0, 257);
-            auto read_size = settings_file.read(file_data, 256);
-            if (read_size.is_error())
-                break;
-            file_position += 256;
-            // Reset line_start to beginning of buffer
-            line_start = file_data;
-            pos = line_start;
-            while ((line_end = strstr(line_start, "\x0A"))) {
-                length = line_end - line_start - 1;
-                params[it] = string(pos, length);
-                it++;
-                line_start = line_end + 1;
-                pos = line_start;
-                if (line_start - file_data >= 256)
-                    break;
-                if (it >= nb_params)
-                    break;
-            }
-            if (read_size.value() != 256)
-                break;  // End of file
-
-            // Restart at beginning of last incomplete line
-            file_position -= (file_data + 256 - line_start);
-        }
-    }
-
-    if (it < nb_params) {
-        /* bad number of params, signal defaults */
-        input_file = "RECON";
-        output_file = "RECON_RESULTS";
-        recon_lock_duration = RECON_MIN_LOCK_DURATION;
-        recon_lock_nb_match = RECON_DEF_NB_MATCH;
-        squelch = -14;
-        recon_match_mode = RECON_MATCH_CONTINUOUS;
-        wait = RECON_DEF_WAIT_DURATION;
+    File settings_file;
+    auto error = settings_file.open(RECON_CFG_FILE);
+    if (error)
         return false;
+
+    auto complete = false;
+    auto line_nb = 0;
+    auto reader = FileLineReader(settings_file);
+    for (const auto& line : reader) {
+        switch (line_nb) {
+            case 0:
+                input_file = trim(line);
+                break;
+            case 1:
+                output_file = trim(line);
+                break;
+            case 2:
+                parse_int(line, recon_lock_duration);
+                break;
+            case 3:
+                parse_int(line, recon_lock_nb_match);
+                break;
+            case 4:
+                parse_int(line, squelch);
+                break;
+            case 5:
+                parse_int(line, recon_match_mode);
+                break;
+            case 6:
+                parse_int(line, wait);
+                complete = true;  // NB: Last entry.
+                break;
+        }
+
+        if (complete) break;
+
+        line_nb++;
     }
 
-    if (it > 0)
-        input_file = params[0];
-    else
-        input_file = "RECON";
-
-    if (it > 1)
-        output_file = params[1];
-    else
-        output_file = "RECON_RESULTS";
-
-    if (it > 2)
-        recon_lock_duration = strtoll(params[2].c_str(), nullptr, 10);
-    else
-        recon_lock_duration = RECON_MIN_LOCK_DURATION;
-
-    if (it > 3)
-        recon_lock_nb_match = strtoll(params[3].c_str(), nullptr, 10);
-    else
-        recon_lock_nb_match = RECON_DEF_NB_MATCH;
-
-    if (it > 4)
-        squelch = strtoll(params[4].c_str(), nullptr, 10);
-    else
-        squelch = -14;
-
-    if (it > 5)
-        recon_match_mode = strtoll(params[5].c_str(), nullptr, 10);
-    else
-        recon_match_mode = RECON_MATCH_CONTINUOUS;
-
-    if (it > 6)
-        wait = strtoll(params[6].c_str(), nullptr, 10);
-    else
-        wait = RECON_DEF_WAIT_DURATION;
-
-    return true;
+    return complete;
 }
 
 bool ReconView::recon_save_config_to_sd() {
@@ -306,53 +273,38 @@ void ReconView::handle_retune() {
         receiver_model.set_target_frequency(freq);  // Retune
     }
     if (frequency_list.size() > 0) {
-        if (last_entry.modulation != frequency_list[current_index].modulation && frequency_list[current_index].modulation >= 0) {
-            last_entry.modulation = frequency_list[current_index].modulation;
-            field_mode.set_selected_index(frequency_list[current_index].modulation);
-            last_entry.bandwidth = -1;
+        if (last_entry.modulation != current_entry().modulation && is_valid(current_entry().modulation)) {
+            last_entry.modulation = current_entry().modulation;
+            field_mode.set_selected_index(current_entry().modulation);
+            last_entry.bandwidth = freqman_invalid_index;
         }
         // Set bandwidth if any
-        if (last_entry.bandwidth != frequency_list[current_index].bandwidth && frequency_list[current_index].bandwidth >= 0) {
-            last_entry.bandwidth = frequency_list[current_index].bandwidth;
-            field_bw.set_selected_index(frequency_list[current_index].bandwidth);
+        if (last_entry.bandwidth != current_entry().bandwidth && is_valid(current_entry().bandwidth)) {
+            last_entry.bandwidth = current_entry().bandwidth;
+            field_bw.set_selected_index(current_entry().bandwidth);
         }
-        if (last_entry.step != frequency_list[current_index].step && frequency_list[current_index].step >= 0) {
-            last_entry.step = frequency_list[current_index].step;
+        if (last_entry.step != current_entry().step && is_valid(current_entry().step)) {
+            last_entry.step = current_entry().step;
             step = freqman_entry_get_step_value(last_entry.step);
             step_mode.set_selected_index(step);
         }
         if (last_index != current_index) {
             last_index = current_index;
-            if ((int32_t)frequency_list.size() && current_index < (int32_t)frequency_list.size() && frequency_list[current_index].type == RANGE) {
+            if (frequency_list.size() && current_is_valid() && current_entry().type == freqman_type::Range) {
                 if (update_ranges && !manual_mode) {
-                    button_manual_start.set_text(to_string_short_freq(frequency_list[current_index].frequency_a));
-                    frequency_range.min = frequency_list[current_index].frequency_a;
-                    if (frequency_list[current_index].frequency_b != 0) {
-                        button_manual_end.set_text(to_string_short_freq(frequency_list[current_index].frequency_b));
-                        frequency_range.max = frequency_list[current_index].frequency_b;
+                    button_manual_start.set_text(to_string_short_freq(current_entry().frequency_a));
+                    frequency_range.min = current_entry().frequency_a;
+                    if (current_entry().frequency_b != 0) {
+                        button_manual_end.set_text(to_string_short_freq(current_entry().frequency_b));
+                        frequency_range.max = current_entry().frequency_b;
                     } else {
-                        button_manual_end.set_text(to_string_short_freq(frequency_list[current_index].frequency_a));
-                        frequency_range.max = frequency_list[current_index].frequency_a;
+                        button_manual_end.set_text(to_string_short_freq(current_entry().frequency_a));
+                        frequency_range.max = current_entry().frequency_a;
                     }
                 }
             }
             text_cycle.set_text(to_string_dec_uint(current_index + 1, 3));
-            if (frequency_list[current_index].description.size() > 0) {
-                switch (frequency_list[current_index].type) {
-                    case RANGE:
-                        desc_cycle.set("R: " + frequency_list[current_index].description);  // Show new description
-                        break;
-                    case HAMRADIO:
-                        desc_cycle.set("H: " + frequency_list[current_index].description);  // Show new description
-                        break;
-                    default:
-                    case SINGLE:
-                        desc_cycle.set("S: " + frequency_list[current_index].description);  // Show new description
-                        break;
-                }
-            } else {
-                desc_cycle.set("...no description...");  // Show new description
-            }
+            update_description();
         }
     }
 }
@@ -467,6 +419,7 @@ ReconView::ReconView(NavigationView& nav)
         if (frequency_list.size() > 0) {
             auto new_view = nav_.push<FrequencyKeypadView>(current_index);
             new_view->on_changed = [this, &button](rf::Frequency f) {
+                // NB: This is using the freq keypad to select an index.
                 f = f / OneMHz;
                 if (f >= 1 && f <= frequency_list.size()) {
                     index_stepper = f - 1 - current_index;
@@ -477,17 +430,18 @@ ReconView::ReconView(NavigationView& nav)
     };
 
     button_manual_start.on_change = [this]() {
-        frequency_range.min = frequency_range.min + button_manual_start.get_encoder_delta() * freqman_entry_get_step_value(def_step);
+        auto step_val = freqman_entry_get_step_value(def_step);
+        frequency_range.min = frequency_range.min + button_manual_start.get_encoder_delta() * step_val;
         if (frequency_range.min < 0) {
             frequency_range.min = 0;
         }
-        if (frequency_range.min > (MAX_UFREQ - freqman_entry_get_step_value(def_step))) {
-            frequency_range.min = MAX_UFREQ - freqman_entry_get_step_value(def_step);
+        if (frequency_range.min > (MAX_UFREQ - step_val)) {
+            frequency_range.min = MAX_UFREQ - step_val;
         }
-        if (frequency_range.min > (frequency_range.max - freqman_entry_get_step_value(def_step))) {
-            frequency_range.max = frequency_range.min + freqman_entry_get_step_value(def_step);
+        if (frequency_range.min > (frequency_range.max - step_val)) {
+            frequency_range.max = frequency_range.min + step_val;
             if (frequency_range.max > MAX_UFREQ) {
-                frequency_range.min = MAX_UFREQ - freqman_entry_get_step_value(def_step);
+                frequency_range.min = MAX_UFREQ - step_val;
                 frequency_range.max = MAX_UFREQ;
             }
         }
@@ -497,18 +451,19 @@ ReconView::ReconView(NavigationView& nav)
     };
 
     button_manual_end.on_change = [this]() {
-        frequency_range.max = frequency_range.max + button_manual_end.get_encoder_delta() * freqman_entry_get_step_value(def_step);
-        if (frequency_range.max < (freqman_entry_get_step_value(def_step) + 1)) {
-            frequency_range.max = (freqman_entry_get_step_value(def_step) + 1);
+        auto step_val = freqman_entry_get_step_value(def_step);
+        frequency_range.max = frequency_range.max + button_manual_end.get_encoder_delta() * step_val;
+        if (frequency_range.max < (step_val + 1)) {
+            frequency_range.max = (step_val + 1);
         }
         if (frequency_range.max > MAX_UFREQ) {
             frequency_range.max = MAX_UFREQ;
         }
-        if (frequency_range.max < (frequency_range.min + freqman_entry_get_step_value(def_step))) {
-            frequency_range.min = frequency_range.max - freqman_entry_get_step_value(def_step);
-            if (frequency_range.max < (freqman_entry_get_step_value(def_step) + 1)) {
+        if (frequency_range.max < (frequency_range.min + step_val)) {
+            frequency_range.min = frequency_range.max - step_val;
+            if (frequency_range.max < (step_val + 1)) {
                 frequency_range.min = 1;
-                frequency_range.max = (freqman_entry_get_step_value(def_step) + 1);
+                frequency_range.max = (step_val + 1);
             }
         }
         button_manual_start.set_text(to_string_short_freq(frequency_range.min));
@@ -550,7 +505,10 @@ ReconView::ReconView(NavigationView& nav)
     button_audio_app.on_select = [this](Button&) {
         auto settings = receiver_model.settings();
         settings.frequency_step = step_mode.selected_index_value();
-        nav_.replace<AnalogAudioView>(settings);
+        if (field_mode.selected_index_value() == SPEC_MODULATION)
+            nav_.replace<CaptureAppView>();
+        else
+            nav_.replace<AnalogAudioView>(settings);
     };
 
     button_loop_config.on_select = [this](Button&) {
@@ -568,11 +526,11 @@ ReconView::ReconView(NavigationView& nav)
     // TODO: *BUG* Both transmitter_model and receiver_model share the same pmem setting for target_frequency.
     button_mic_app.on_select = [this](Button&) {
         if (frequency_list.size() > 0 && current_index >= 0 && (unsigned)current_index < frequency_list.size()) {
-            if (frequency_list[current_index].type == HAMRADIO) {
-                // if it's a HAMRADIO entry, then frequency_a is the freq at which the repeater receives, so we have to set it in transmit in mic app
-                transmitter_model.set_target_frequency(frequency_list[current_index].frequency_a);
-                // if it's a HAMRADIO entry, then frequency_b is the freq at which the repeater transmits, so we have to set it in receive in mic app
-                receiver_model.set_target_frequency(frequency_list[current_index].frequency_b);
+            if (current_entry().type == freqman_type::HamRadio) {
+                // if it's a HamRadio entry, then frequency_a is the freq at which the repeater receives, so we have to set it in transmit in mic app
+                transmitter_model.set_target_frequency(current_entry().frequency_a);
+                // if it's a HamRadio entry, then frequency_b is the freq at which the repeater transmits, so we have to set it in receive in mic app
+                receiver_model.set_target_frequency(current_entry().frequency_b);
             } else {
                 // it's single or range so we us actual tuned frequency
                 transmitter_model.set_target_frequency(freq);
@@ -585,103 +543,9 @@ ReconView::ReconView(NavigationView& nav)
     };
 
     button_remove.on_select = [this](ButtonWithEncoder&) {
-        if (frequency_list.size() > 0) {
-            if (!manual_mode) {
-                // scanner or recon (!scanner) mode
-                // in both we delete index from live view, but only remove in output file in scanner_mode
-                if (current_index >= (int32_t)frequency_list.size()) {
-                    current_index = frequency_list.size() - 1;
-                }
-                frequency_list.erase(frequency_list.begin() + current_index);
-                if (current_index >= (int32_t)frequency_list.size()) {
-                    current_index = frequency_list.size() - 1;
-                }
-                if (frequency_list.size() > 0) {
-                    if (frequency_list[current_index].description.size() > 0) {
-                        switch (frequency_list[current_index].type) {
-                            case RANGE:
-                                desc_cycle.set("R: " + frequency_list[current_index].description);
-                                break;
-                            case HAMRADIO:
-                                desc_cycle.set("H: " + frequency_list[current_index].description);
-                                break;
-                            default:
-                            case SINGLE:
-                                desc_cycle.set("S: " + frequency_list[current_index].description);
-                                break;
-                        }
-                    } else {
-                        desc_cycle.set("...no description...");
-                    }
-                    text_cycle.set_text(to_string_dec_uint(current_index + 1, 3));
-                }
-                // also remove from output file if in scanner mode
-                if (scanner_mode) {
-                    File freqman_file{};
-                    delete_file(freq_file_path);
-                    auto result = freqman_file.create(freq_file_path);
-                    if (!result.is_valid()) {
-                        for (size_t n = 0; n < frequency_list.size(); n++) {
-                            std::string line;
-                            get_freq_string(frequency_list[n], line);
-                            freqman_file.write_line(line);
-                        }
-                    }
-                }
-            } else if (manual_mode)  // only remove from output
-            {
-                File recon_file{};
-                File tmp_recon_file{};
-                std::string tmp_freq_file_path{freq_file_path + ".TMP"};
-                std::string frequency_to_add{};
+        handle_remove_current_item();
 
-                freqman_entry entry = frequency_list[current_index];
-                entry.frequency_a = freq;
-                entry.frequency_b = 0;
-                entry.modulation = last_entry.modulation;
-                entry.bandwidth = last_entry.bandwidth;
-                entry.type = SINGLE;
-
-                get_freq_string(entry, frequency_to_add);
-
-                delete_file(tmp_freq_file_path);
-                auto result = tmp_recon_file.create(tmp_freq_file_path);  // First recon if freq is already in txt
-                if (!result.is_valid()) {
-                    bool found = false;
-                    result = recon_file.open(freq_file_path);  // First recon if freq is already in txt
-                    if (!result.is_valid()) {
-                        char one_char[1]{};  // Read it char by char
-                        std::string line{};  // and put read line in here
-                        for (size_t pointer = 0; pointer < recon_file.size(); pointer++) {
-                            recon_file.seek(pointer);
-                            recon_file.read(one_char, 1);
-                            if ((int)one_char[0] > 31) {       // ascii space upwards
-                                line += one_char[0];           // add it to the textline
-                            } else if (one_char[0] == '\n') {  // new Line
-                                if (line.compare(0, frequency_to_add.size(), frequency_to_add) == 0) {
-                                    found = true;
-                                } else {
-                                    tmp_recon_file.write_line(frequency_to_add);
-                                }
-                                line.clear();  // ready for next textline
-                            }
-                        }
-                        if (found) {
-                            delete_file(freq_file_path);
-                            rename_file(tmp_freq_file_path, freq_file_path);
-                        } else {
-                            delete_file(tmp_freq_file_path);
-                        }
-                    }
-                }
-            }
-            receiver_model.set_target_frequency(frequency_list[current_index].frequency_a);  // retune
-        }
-        if (frequency_list.size() == 0) {
-            text_cycle.set_text(" ");
-            desc_cycle.set("no entries in list");  // Show new description
-            delete_file(freq_file_path);
-        }
+        // TODO: refresh UI.
         timer = 0;
         freq_lock = 0;
     };
@@ -703,25 +567,23 @@ ReconView::ReconView(NavigationView& nav)
         } else {
             if (field_mode.selected_index_value() != SPEC_MODULATION)
                 audio::output::stop();
-            // clear and shrink_to_fit are not enough to really start with a new, clean, empty vector
-            // swap is the only way to achieve a perfect memory liberation
-            std::vector<freqman_entry>().swap(frequency_list);
 
-            freqman_entry manual_freq_entry;
+            // Clear doesn't actually free, re-assign so destructor runs on previous instance.
+            frequency_list = freqman_db{};
+            current_index = 0;
+            frequency_list.push_back(std::make_unique<freqman_entry>());
 
-            def_step = step_mode.selected_index();  // max range val
-
-            manual_freq_entry.type = RANGE;
-            manual_freq_entry.description =
-                to_string_short_freq(frequency_range.min).erase(0, 1) + ">" + to_string_short_freq(frequency_range.max).erase(0, 1) + " S:"  // current Manual range
-                + freqman_entry_get_step_string_short(def_step);                                                                             // euquiq: lame kludge to reduce spacing in step freq
-            manual_freq_entry.frequency_a = frequency_range.min;                                                                             // min range val
-            manual_freq_entry.frequency_b = frequency_range.max;                                                                             // max range val
-            manual_freq_entry.modulation = -1;
-            manual_freq_entry.bandwidth = -1;
-            manual_freq_entry.step = def_step;
-
-            frequency_list.push_back(manual_freq_entry);
+            def_step = step_mode.selected_index();
+            current_entry().type = freqman_type::Range;
+            current_entry().description =
+                to_string_short_freq(frequency_range.min).erase(0, 1) + ">" +  // euquiq: lame kludge to reduce spacing in step freq
+                to_string_short_freq(frequency_range.max).erase(0, 1) + " S:" +
+                freqman_entry_get_step_string_short(def_step);
+            current_entry().frequency_a = frequency_range.min;
+            current_entry().frequency_b = frequency_range.max;
+            current_entry().modulation = freqman_invalid_index;
+            current_entry().bandwidth = freqman_invalid_index;
+            current_entry().step = def_step;
 
             big_display.set_style(&Styles::white);  // Back to white color
 
@@ -736,13 +598,12 @@ ReconView::ReconView(NavigationView& nav)
             file_name.set("MANUAL RANGE RECON");
             desc_cycle.set_style(&Styles::white);
 
-            last_entry.modulation = -1;
-            last_entry.bandwidth = -1;
-            last_entry.step = -1;
+            last_entry.modulation = freqman_invalid_index;
+            last_entry.bandwidth = freqman_invalid_index;
+            last_entry.step = freqman_invalid_index;
             last_index = -1;
 
-            current_index = 0;
-            freq = manual_freq_entry.frequency_a;
+            freq = current_entry().frequency_a;
             handle_retune();
             recon_redraw();
             recon_resume();
@@ -763,9 +624,8 @@ ReconView::ReconView(NavigationView& nav)
     };
 
     button_restart.on_select = [this](Button&) {
+        frequency_file_load(true);
         if (frequency_list.size() > 0) {
-            def_step = step_mode.selected_index();  // Use def_step from manual selector
-            frequency_file_load(true);
             if (fwd) {
                 button_dir.set_text("FW>");
             } else {
@@ -787,7 +647,7 @@ ReconView::ReconView(NavigationView& nav)
         }
     };
 
-    button_add.on_select = [this](ButtonWithEncoder&) {  // frequency_list[current_index]
+    button_add.on_select = [this](ButtonWithEncoder&) {
         if (!scanner_mode) {
             recon_save_freq(freq_file_path, current_index, true);
         }
@@ -829,7 +689,7 @@ ReconView::ReconView(NavigationView& nav)
         open_view->on_changed = [this](std::vector<std::string> result) {
             input_file = result[0];
             output_file = result[1];
-            freq_file_path = "/FREQMAN/" + output_file + ".TXT";
+            freq_file_path = get_freqman_path(output_file).string();
             recon_save_config_to_sd();
 
             autosave = persistent_memory::recon_autosave_freqs();
@@ -888,7 +748,7 @@ ReconView::ReconView(NavigationView& nav)
 
     // Loading input and output file from settings
     recon_load_config_from_sd();
-    freq_file_path = "/FREQMAN/" + output_file + ".TXT";
+    freq_file_path = get_freqman_path(output_file).string();
 
     field_recon_match_mode.set_selected_index(recon_match_mode);
     field_squelch.set_value(squelch);
@@ -918,8 +778,7 @@ ReconView::ReconView(NavigationView& nav)
     recon_redraw();
 }
 
-void ReconView::frequency_file_load(bool stop_all_before) {
-    (void)(stop_all_before);
+void ReconView::frequency_file_load(bool) {
     if (field_mode.selected_index_value() != SPEC_MODULATION)
         audio::output::stop();
 
@@ -937,7 +796,12 @@ void ReconView::frequency_file_load(bool stop_all_before) {
         desc_cycle.set_style(&Styles::blue);
         button_scanner_mode.set_text("RECON");
     }
-    if (!load_freqman_file(file_input, frequency_list, load_freqs, load_ranges, load_hamradios)) {
+
+    freqman_load_options options{
+        .load_freqs = load_freqs,
+        .load_ranges = load_ranges,
+        .load_hamradios = load_hamradios};
+    if (!load_freqman_file(file_input, frequency_list, options)) {
         file_name.set_style(&Styles::red);
         desc_cycle.set(" NO " + file_input + ".TXT FILE ...");
         file_name.set("=> NO DATA");
@@ -954,71 +818,39 @@ void ReconView::frequency_file_load(bool stop_all_before) {
         }
     }
 
-    if (frequency_list[0].step >= 0)
-        step = freqman_entry_get_step_value(frequency_list[0].step);
-    else
-        step = freqman_entry_get_step_value(def_step);
-
-    switch (frequency_list[0].type) {
-        case SINGLE:
-            freq = frequency_list[0].frequency_a;
-            break;
-        case RANGE:
-            minfreq = frequency_list[0].frequency_a;
-            maxfreq = frequency_list[0].frequency_b;
-            if (fwd) {
-                freq = minfreq;
-            } else {
-                freq = maxfreq;
-            }
-            if (frequency_list[0].step >= 0)
-                step = freqman_entry_get_step_value(frequency_list[0].step);
-            break;
-        case HAMRADIO:
-            minfreq = frequency_list[0].frequency_a;
-            maxfreq = frequency_list[0].frequency_b;
-            if (fwd) {
-                freq = minfreq;
-            } else {
-                freq = maxfreq;
-            }
-            break;
-        default:
-            break;
+    if (frequency_list.empty()) {
+        text_cycle.set_text(" ");
+        return;  // Can't really do much.
     }
+
     reset_indexes();
+    step = freqman_entry_get_step_value(
+        is_valid(current_entry().step) ? current_entry().step : def_step);
+
+    if (current_entry().type == freqman_type::Single) {
+        freq = current_entry().frequency_a;
+    } else if (current_entry().type != freqman_type::Unknown) {
+        minfreq = current_entry().frequency_a;
+        maxfreq = current_entry().frequency_b;
+        freq = fwd ? minfreq : maxfreq;
+    }
+
     step_mode.set_selected_index(def_step);  // Impose the default step into the manual step selector
     receiver_model.enable();
     receiver_model.set_squelch_level(0);
-    if (frequency_list.size() != 0) {
-        switch (frequency_list[current_index].type) {
-            case RANGE:
-                description = "R: " + frequency_list[current_index].description;
-                break;
-            case HAMRADIO:
-                description = "H: " + frequency_list[current_index].description;
-                break;
-            default:
-            case SINGLE:
-                description = "S: " + frequency_list[current_index].description;
-                break;
+    text_cycle.set_text(to_string_dec_uint(current_index + 1, 3));
+    if (update_ranges && !manual_mode) {
+        button_manual_start.set_text(to_string_short_freq(current_entry().frequency_a));
+        frequency_range.min = current_entry().frequency_a;
+        if (current_entry().frequency_b != 0) {
+            button_manual_end.set_text(to_string_short_freq(current_entry().frequency_b));
+            frequency_range.max = current_entry().frequency_b;
+        } else {
+            button_manual_end.set_text(to_string_short_freq(current_entry().frequency_a));
+            frequency_range.max = current_entry().frequency_a;
         }
-        text_cycle.set_text(to_string_dec_uint(current_index + 1, 3));
-        if (update_ranges && !manual_mode) {
-            button_manual_start.set_text(to_string_short_freq(frequency_list[current_index].frequency_a));
-            frequency_range.min = frequency_list[current_index].frequency_a;
-            if (frequency_list[current_index].frequency_b != 0) {
-                button_manual_end.set_text(to_string_short_freq(frequency_list[current_index].frequency_b));
-                frequency_range.max = frequency_list[current_index].frequency_b;
-            } else {
-                button_manual_end.set_text(to_string_short_freq(frequency_list[current_index].frequency_a));
-                frequency_range.max = frequency_list[current_index].frequency_a;
-            }
-        }
-    } else {
-        text_cycle.set_text(" ");
     }
-    desc_cycle.set(description);
+    update_description();
     handle_retune();
 }
 
@@ -1058,7 +890,6 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
     if (recon) {
         if (!timer) {
             status = 0;
-            continuous_lock = false;
             freq_lock = 0;
             timer = local_recon_lock_duration;
             big_display.set_style(&Styles::white);
@@ -1075,22 +906,19 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
             }
             if (db > squelch)  // MATCHING LEVEL
             {
-                continuous_lock = true;
                 freq_lock++;
+                timer += time_interval;  // give some more time for next lock
             } else {
                 // continuous, direct cut it if not consecutive match after 1 first match
                 if (recon_match_mode == RECON_MATCH_CONTINUOUS) {
-                    if (freq_lock > 0) {
-                        timer = 0;
-                        continuous_lock = false;
-                    }
+                    freq_lock = 0;
+                    timer = 0;
                 }
             }
         }
         if (freq_lock >= recon_lock_nb_match)  // LOCKED
         {
             if (status != 2) {
-                continuous_lock = false;
                 status = 2;
                 // FREQ IS STRONG: GREEN and recon will pause when on_statistics_update()
                 if ((!scanner_mode) && autosave && frequency_list.size() > 0) {
@@ -1102,6 +930,10 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
                     // contents of a possible recon_start_recording(), but not yet since it's only called once
                     if (auto_record_locked && !is_recording) {
                         button_audio_app.set_style(&Styles::red);
+                        if (field_mode.selected_index_value() == SPEC_MODULATION)
+                            button_audio_app.set_text("RAW REC");
+                        else
+                            button_audio_app.set_text("WAV REC");
                         record_view->start();
                         button_config.set_style(&Styles::light_grey);  // disable config while recording as it's causing an IO error pop up at exit
                         is_recording = true;
@@ -1127,10 +959,9 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
         last_timer = timer;
         text_timer.set("TIMER: " + to_string_dec_int(timer));
     }
-    if (timer) {
-        if (!continuous_lock || recon_match_mode == RECON_MATCH_SPARSE) {
-            timer -= time_interval;
-        }
+
+    if (timer != 0) {
+        timer -= time_interval;
         if (timer < 0) {
             timer = 0;
         }
@@ -1144,7 +975,7 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
                 if (recon || stepper != 0 || index_stepper != 0) {
                     if (index_stepper == 0) {
                         /* we are doing a range */
-                        if (frequency_list[current_index].type == RANGE) {
+                        if (current_entry().type == freqman_type::Range) {
                             if ((fwd && stepper == 0) || stepper > 0) {
                                 // forward
                                 freq += step;
@@ -1174,7 +1005,7 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
                                     }
                                 }
                             }
-                        } else if (frequency_list[current_index].type == SINGLE) {
+                        } else if (current_entry().type == freqman_type::Single) {
                             if ((fwd && stepper == 0) || stepper > 0) {  // forward
                                 current_index++;
                                 entry_has_changed = true;
@@ -1193,7 +1024,7 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
                                     current_index = frequency_list.size() - 1;
                                 }
                             }
-                        } else if (frequency_list[current_index].type == HAMRADIO) {
+                        } else if (current_entry().type == freqman_type::HamRadio) {
                             if ((fwd && stepper == 0) || stepper > 0) {  // forward
                                 if ((minfreq != maxfreq) && freq == minfreq) {
                                     freq = maxfreq;
@@ -1247,22 +1078,22 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
                     // reload entry if changed
                     if (entry_has_changed) {
                         timer = 0;
-                        switch (frequency_list[current_index].type) {
-                            case SINGLE:
-                                freq = frequency_list[current_index].frequency_a;
+                        switch (current_entry().type) {
+                            case freqman_type::Single:
+                                freq = current_entry().frequency_a;
                                 break;
-                            case RANGE:
-                                minfreq = frequency_list[current_index].frequency_a;
-                                maxfreq = frequency_list[current_index].frequency_b;
+                            case freqman_type::Range:
+                                minfreq = current_entry().frequency_a;
+                                maxfreq = current_entry().frequency_b;
                                 if ((fwd && !stepper && !index_stepper) || stepper > 0 || index_stepper > 0) {
                                     freq = minfreq;
                                 } else if ((!fwd && !stepper && !index_stepper) || stepper < 0 || index_stepper < 0) {
                                     freq = maxfreq;
                                 }
                                 break;
-                            case HAMRADIO:
-                                minfreq = frequency_list[current_index].frequency_a;
-                                maxfreq = frequency_list[current_index].frequency_b;
+                            case freqman_type::HamRadio:
+                                minfreq = current_entry().frequency_a;
+                                maxfreq = current_entry().frequency_b;
                                 if ((fwd && !stepper && !index_stepper) || stepper > 0 || index_stepper > 0) {
                                     freq = minfreq;
                                 } else if ((!fwd && !stepper && !index_stepper) || stepper < 0 || index_stepper < 0) {
@@ -1290,7 +1121,6 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
 void ReconView::recon_pause() {
     timer = 0;
     freq_lock = 0;
-    continuous_lock = false;
     recon = false;
 
     if (field_mode.selected_index_value() != SPEC_MODULATION)
@@ -1303,7 +1133,6 @@ void ReconView::recon_pause() {
 void ReconView::recon_resume() {
     timer = 0;
     freq_lock = 0;
-    continuous_lock = false;
     recon = true;
 
     if (field_mode.selected_index_value() != SPEC_MODULATION)
@@ -1421,10 +1250,14 @@ size_t ReconView::change_mode(freqman_index_t new_mod) {
             break;
     }
     if (new_mod != SPEC_MODULATION) {
+        button_audio_app.set_text("AUDIO");
+        // TODO: Oversampling.
         record_view->set_sampling_rate(recording_sampling_rate);
-        // reset receiver model to fix bug when going from SPEC to audio, the sound is distorded
+        // reset receiver model to fix bug when going from SPEC to audio, the sound is distorted
         receiver_model.set_sampling_rate(3072000);
         receiver_model.set_baseband_bandwidth(1750000);
+    } else {
+        button_audio_app.set_text("RAW");
     }
 
     field_mode.set_selected_index(new_mod);
@@ -1448,4 +1281,35 @@ void ReconView::handle_coded_squelch(const uint32_t value) {
         text_ctcss.set("        ");
 }
 
+void ReconView::handle_remove_current_item() {
+    if (frequency_list.empty() || !current_is_valid())
+        return;
+
+    auto entry = current_entry();  // Copy the current entry.
+
+    // In Scanner or Recon modes, remove from the in-memory list.
+    if (mode() != recon_mode::Manual) {
+        if (current_is_valid()) {
+            frequency_list.erase(frequency_list.begin() + current_index);
+        }
+
+        if (frequency_list.size() > 0) {
+            current_index = clip<int32_t>(current_index, 0u, frequency_list.size() - 1);
+            text_cycle.set_text(to_string_dec_uint(current_index + 1, 3));
+            update_description();
+        } else {
+            current_index = 0;
+        }
+    }
+
+    // In Scanner or Manual mode, remove the entry from the output file.
+    if (mode() != recon_mode::Recon) {
+        FreqmanDB freq_db;
+        if (!freq_db.open(freq_file_path))
+            return;
+
+        freq_db.delete_entry(entry);
+    }
+}
+
 } /* namespace ui */

firmware/application/apps/ui_recon.hpp

@@ -46,6 +46,12 @@ namespace ui {
 
 #define RECON_CFG_FILE "SETTINGS/recon.cfg"
 
+enum class recon_mode : uint8_t {
+    Recon,
+    Scanner,
+    Manual
+};
+
 class ReconView : public View {
    public:
     ReconView(NavigationView& nav);
@@ -67,6 +73,7 @@ class ReconView : public View {
     void set_loop_config(bool v);
     void clear_freqlist_for_ui_action();
     void reset_indexes();
+    void update_description();
     void audio_output_start();
     bool check_sd_card();
     size_t change_mode(freqman_index_t mod_type);
@@ -81,14 +88,26 @@ class ReconView : public View {
     void recon_redraw();
     void handle_retune();
     void handle_coded_squelch(const uint32_t value);
+    void handle_remove_current_item();
     bool recon_load_config_from_sd();
     bool recon_save_config_to_sd();
-    bool recon_save_freq(const std::string& freq_file_path, size_t index, bool warn_if_exists);
+    bool recon_save_freq(const std::filesystem::path& path, size_t index, bool warn_if_exists);
     // placeholder for possible void recon_start_recording();
     void recon_stop_recording();
 
+    // Returns true if 'current_index' is in bounds of frequency_list.
+    bool current_is_valid();
+    freqman_entry& current_entry();
+
+    // TODO: consolidate mode bools and use recon_mode.
+    recon_mode mode() const {
+        if (manual_mode) return recon_mode::Manual;
+        if (scanner_mode) return recon_mode::Scanner;
+        return recon_mode::Recon;
+    }
+
     jammer::jammer_range_t frequency_range{false, 0, MAX_UFREQ};  // perfect for manual recon task too...
-    int32_t squelch{0};
+    int32_t squelch{RECON_DEF_SQUELCH};
     int32_t db{0};
     int32_t timer{0};
     int32_t wait{RECON_DEF_WAIT_DURATION};  // in msec. if > 0 wait duration after a lock, if < 0 duration is set to 'wait' unless there is no more activity
@@ -112,7 +131,7 @@ class ReconView : public View {
     bool user_pause{false};
     bool auto_record_locked{false};
     bool is_recording{false};
-    uint32_t recon_lock_nb_match{3};
+    uint32_t recon_lock_nb_match{RECON_DEF_NB_MATCH};
     uint32_t recon_lock_duration{RECON_MIN_LOCK_DURATION};
     uint32_t recon_match_mode{RECON_MATCH_CONTINUOUS};
     bool scanner_mode{false};

firmware/application/apps/ui_recon_settings.cpp

@@ -21,12 +21,13 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "ui_recon_settings.hpp"
-#include "ui_navigation.hpp"
 #include "ui_fileman.hpp"
+#include "ui_navigation.hpp"
+#include "ui_recon_settings.hpp"
 #include "ui_textentry.hpp"
 
 #include "file.hpp"
+#include "freqman_db.hpp"
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
 
@@ -55,11 +56,9 @@ ReconSetupViewMain::ReconSetupViewMain(NavigationView& nav, Rect parent_rect, st
 
     button_load_freqs.on_select = [this, &nav](Button&) {
         auto open_view = nav.push<FileLoadView>(".TXT");
+        open_view->push_dir(freqman_dir);
         open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
-                                                                   // get the filename without txt extension so we can use load_freqman_file fcn
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                 _input_file = new_file_path.stem().string();
                 text_input_file.set(_input_file);
             } else {
@@ -70,10 +69,9 @@ ReconSetupViewMain::ReconSetupViewMain(NavigationView& nav, Rect parent_rect, st
 
     button_save_freqs.on_select = [this, &nav](Button&) {
         auto open_view = nav.push<FileLoadView>(".TXT");
+        open_view->push_dir(freqman_dir);
         open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                 _output_file = new_file_path.stem().string();
                 button_output_file.set_text(_output_file);
             } else {
@@ -85,7 +83,7 @@ ReconSetupViewMain::ReconSetupViewMain(NavigationView& nav, Rect parent_rect, st
     button_output_file.on_select = [this, &nav](Button&) {
         text_prompt(nav, _output_file, 28,
                     [this](std::string& buffer) {
-                        _output_file = buffer;
+                        _output_file = std::move(buffer);
                         button_output_file.set_text(_output_file);
                     });
     };

firmware/application/apps/ui_recon_settings.hpp

@@ -50,6 +50,8 @@
 // maximum lock duration
 #define RECON_MAX_LOCK_DURATION 9900
 
+#define RECON_DEF_SQUELCH -14
+
 // default number of match to have a lock
 #define RECON_DEF_NB_MATCH 3
 #define RECON_MIN_LOCK_DURATION 100   // have to be >= and a multiple of STATS_UPDATE_INTERVAL

firmware/application/apps/ui_scanner.cpp

@@ -21,19 +21,25 @@
  */
 
 #include "ui_scanner.hpp"
+
+#include "optional.hpp"
 #include "ui_fileman.hpp"
+#include "ui_freqman.hpp"
 
 using namespace portapack;
+namespace fs = std::filesystem;
 
 namespace ui {
 
+static const fs::path default_scan_file{u"FREQMAN/SCANNER.TXT"};
+
 ScannerThread::ScannerThread(std::vector<rf::Frequency> frequency_list)
     : frequency_list_{std::move(frequency_list)} {
     _manual_search = false;
     create_thread();
 }
 
-ScannerThread::ScannerThread(const jammer::jammer_range_t& frequency_range, size_t def_step_hz)
+ScannerThread::ScannerThread(const scanner_range_t& frequency_range, size_t def_step_hz)
     : frequency_range_(frequency_range), def_step_hz_(def_step_hz) {
     _manual_search = true;
     create_thread();
@@ -79,7 +85,7 @@ void ScannerThread::set_freq_del(const rf::Frequency v) {
 }
 
 // Force a one-time forward or reverse frequency index change; OK to do this without pausing scan thread
-//(used when rotary encoder is turned)
+// (used when rotary encoder is turned)
 void ScannerThread::set_index_stepper(const int32_t v) {
     _index_stepper = v;
 }
@@ -227,17 +233,26 @@ void ScannerView::handle_retune(int64_t freq, uint32_t freq_idx) {
     }
 
     if (!manual_search) {
-        if (frequency_list.size() > 0) {
+        if (entries.size() > 0)
             text_current_index.set(to_string_dec_uint(freq_idx + 1, 3));
-        }
 
-        if (freq_idx < description_list.size() && description_list[freq_idx].size() > 1)
-            desc_current_index.set(description_list[freq_idx]);  // Show description from file
+        if (freq_idx < entries.size() && entries[freq_idx].description.size() > 1)
+            text_current_desc.set(entries[freq_idx].description);  // Show description from file
         else
-            desc_current_index.set(desc_freq_list_scan);  // Show Scan file name (no description in file)
+            text_current_desc.set(loaded_filename());  // Show Scan file name (no description in file)
     }
 }
 
+std::string ScannerView::loaded_filename() const {
+    auto filename = loaded_path.filename().string();
+    if (filename.length() > 23) {  // Truncate and add ellipses if long file name
+        filename.resize(22);
+        filename = filename + "+";
+    }
+
+    return filename;
+}
+
 void ScannerView::focus() {
     button_load.focus();
 }
@@ -253,46 +268,46 @@ ScannerView::~ScannerView() {
 void ScannerView::show_max_index() {  // show total number of freqs to scan
     text_current_index.set("---");
 
-    if (frequency_list.size() == FREQMAN_MAX_PER_FILE) {
+    if (entries.size() == FREQMAN_MAX_PER_FILE) {
         text_max_index.set_style(&Styles::red);
         text_max_index.set("/ " + to_string_dec_uint(FREQMAN_MAX_PER_FILE) + " (DB MAX!)");
     } else {
         text_max_index.set_style(&Styles::grey);
-        text_max_index.set("/ " + to_string_dec_uint(frequency_list.size()));
+        text_max_index.set("/ " + to_string_dec_uint(entries.size()));
     }
 }
 
 ScannerView::ScannerView(
     NavigationView& nav)
-    : nav_{nav}, loaded_file_name{"SCANNER"} {
-    add_children({&labels,
-                  &field_lna,
-                  &field_vga,
-                  &field_rf_amp,
-                  &field_volume,
-                  &field_bw,
-                  &field_squelch,
-                  &field_browse_wait,
-                  &field_lock_wait,
-                  &button_load,
-                  &button_clear,
-                  &rssi,
-                  &text_current_index,
-                  &text_max_index,
-                  &desc_current_index,
-                  &big_display,
-                  &button_manual_start,
-                  &button_manual_end,
-                  &field_mode,
-                  &field_step,
-                  &button_manual_search,
-                  &button_pause,
-                  &button_dir,
-                  &button_audio_app,
-                  &button_mic_app,
-                  &button_add,
-                  &button_remove
-
+    : nav_{nav} {
+    add_children({
+        &labels,
+        &field_lna,
+        &field_vga,
+        &field_rf_amp,
+        &field_volume,
+        &field_bw,
+        &field_squelch,
+        &field_browse_wait,
+        &field_lock_wait,
+        &button_load,
+        &button_clear,
+        &rssi,
+        &text_current_index,
+        &text_max_index,
+        &text_current_desc,
+        &big_display,
+        &button_manual_start,
+        &button_manual_end,
+        &field_mode,
+        &field_step,
+        &button_manual_search,
+        &button_pause,
+        &button_dir,
+        &button_audio_app,
+        &button_mic_app,
+        &button_add,
+        &button_remove,
     });
 
     // Populate option text for these fields
@@ -311,34 +326,29 @@ ScannerView::ScannerView(
     frequency_range.max = stored_freq + 1000000;
     button_manual_end.set_text(to_string_short_freq(frequency_range.max));
 
-    // Button to load txt files from the FREQMAN folder
+    // Button to load a Freqman file.
     button_load.on_select = [this, &nav](Button&) {
         auto open_view = nav.push<FileLoadView>(".TXT");
-        open_view->on_changed = [this](std::filesystem::path new_file_path) {
-            std::string dir_filter = "FREQMAN/";
-            std::string str_file_path = new_file_path.string();
-
-            if (str_file_path.find(dir_filter) != string::npos) {  // assert file from the FREQMAN folder
+        open_view->push_dir(freqman_dir);
+        open_view->on_changed = [this, &nav](std::filesystem::path new_file_path) {
+            if (new_file_path.native().find(freqman_dir.native()) == 0) {
                 scan_pause();
-                // get the filename without txt extension so we can use load_freqman_file fcn
-                std::string str_file_name = new_file_path.stem().string();
-                frequency_file_load(str_file_name, true);
+                frequency_file_load(new_file_path);
             } else {
-                nav_.display_modal("LOAD ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
+                nav.display_modal("LOAD ERROR", "A valid file from\nFREQMAN directory is\nrequired.");
             }
         };
     };
 
     // Button to clear in-memory frequency list
     button_clear.on_select = [this, &nav](Button&) {
-        if (scan_thread && frequency_list.size()) {
+        if (scan_thread && entries.size()) {
             scan_thread->stop();  // STOP SCANNER THREAD
-            frequency_list.clear();
-            description_list.clear();
+            entries.clear();
 
             show_max_index();  // UPDATE new list size on screen
             text_current_index.set("");
-            desc_current_index.set(desc_freq_list_scan);
+            text_current_desc.set(loaded_filename());
             scan_thread->set_freq_lock(0);  // Reset the scanner lock
 
             // FUTURE: Consider switching to manual search mode automatically after clear (but would need to validate freq range)
@@ -407,16 +417,15 @@ ScannerView::ScannerView(
 
     // Button to delete current frequency from scan Freq List
     button_remove.on_select = [this](Button&) {
-        if (scan_thread && (frequency_list.size() > current_index)) {
+        if (scan_thread && (entries.size() > current_index)) {
             scan_thread->set_scanning(false);  // PAUSE Scanning if necessary
 
-            // Remove frequency from the Freq List in memory (it is not removed from the file)
-            scan_thread->set_freq_del(frequency_list[current_index]);
-            description_list.erase(description_list.begin() + current_index);
-            frequency_list.erase(frequency_list.begin() + current_index);
+            // Remove frequency from the Freq List in memory (it is not removed from the file).
+            scan_thread->set_freq_del(entries[current_index].freq);
+            entries.erase(entries.begin() + current_index);
 
             show_max_index();               // UPDATE new list size on screen
-            desc_current_index.set("");     // Clean up description (cosmetic detail)
+            text_current_desc.set("");      // Clean up description (cosmetic detail)
             scan_thread->set_freq_lock(0);  // Reset the scanner lock
         }
     };
@@ -435,15 +444,7 @@ ScannerView::ScannerView(
             manual_search = false;  // Switch to List Scan mode
         }
 
-        audio::output::stop();
-
-        if (scan_thread)
-            scan_thread->stop();  // STOP SCANNER THREAD
-
-        if (userpause)  // If user-paused, resume
-            user_resume();
-
-        start_scan_thread();  // RESTART SCANNER THREAD in selected mode
+        restart_scan();
     };
 
     // Mode field was changed (AM/NFM/WFM)
@@ -470,17 +471,8 @@ ScannerView::ScannerView(
     field_step.on_change = [this](size_t, OptionsField::value_t v) {
         receiver_model.set_frequency_step(v);
 
-        if (manual_search && scan_thread) {
-            // Restart scan thread with new step value
-            scan_thread->stop();  // STOP SCANNER THREAD
-
-            // Resuming pause automatically
-            // FUTURE: Consider whether we should stay in Pause mode...
-            if (userpause)  // If user-paused, resume
-                user_resume();
-
-            start_scan_thread();  // RESTART SCANNER THREAD in Manual Search mode
-        }
+        if (manual_search && scan_thread)
+            restart_scan();
     };
 
     // Button to toggle Forward/Reverse
@@ -496,65 +488,35 @@ ScannerView::ScannerView(
 
     // Button to add current frequency (found during Search) to the Scan Frequency List
     button_add.on_select = [this](Button&) {
-        File scanner_file;
-        const std::string freq_file_path = "FREQMAN/" + loaded_file_name + ".TXT";
-        auto result = scanner_file.open(freq_file_path);  // First search if freq is already in txt
+        FreqmanDB db;
+        if (db.open(loaded_path, /*create*/ true)) {
+            freqman_entry entry{
+                .frequency_a = current_frequency,
+                .type = freqman_type::Single,
+            };
 
-        if (!result.is_valid()) {
-            const std::string frequency_to_add = "f=" + to_string_dec_uint(current_frequency / 1000) + to_string_dec_uint(current_frequency % 1000UL, 3, '0');
-
-            bool found = false;
-            constexpr size_t buffer_size = 1024;
-            char buffer[buffer_size];
-
-            for (size_t pointer = 0, freq_str_idx = 0; pointer < scanner_file.size(); pointer += buffer_size) {
-                size_t adjusted_buffer_size;
-                if (pointer + buffer_size >= scanner_file.size()) {
-                    memset(buffer, 0, sizeof(buffer));
-                    adjusted_buffer_size = scanner_file.size() - pointer;
-                } else {
-                    adjusted_buffer_size = buffer_size;
-                }
-
-                scanner_file.seek(pointer);
-                scanner_file.read(buffer, adjusted_buffer_size);
-
-                for (size_t i = 0; i < adjusted_buffer_size; ++i) {
-                    if (buffer[i] == frequency_to_add.data()[freq_str_idx]) {
-                        ++freq_str_idx;
-                        if (freq_str_idx >= frequency_to_add.size()) {
-                            found = true;
-                            break;
-                        }
-                    } else {
-                        freq_str_idx = 0;
-                    }
-                }
-
-                if (found) {
-                    break;
-                }
-            }
+            // Look for existing entry with same frequency.
+            auto it = db.find_entry([&entry](const auto& e) {
+                return e.frequency_a == entry.frequency_a;
+            });
+            auto found = (it != db.end());
 
             if (found) {
                 nav_.display_modal("Error", "Frequency already exists");
-                bigdisplay_update(-1);  // After showing an error
+                bigdisplay_update(-1);  // Need to poke this control after displaying modal?
             } else {
-                scanner_file.append(freq_file_path);  // Second: append if it is not there
-                scanner_file.write_line(frequency_to_add);
-
+                db.append_entry(entry);
                 // Add to frequency_list in memory too, since we can now switch back from manual mode
-                // Note that we are allowing freqs to be added to file (code above) that exceed the max count we can load into memory
-                if (frequency_list.size() < FREQMAN_MAX_PER_FILE) {
-                    frequency_list.push_back(current_frequency);
-                    description_list.push_back("");
-
+                // Note that we are allowing freqs to be added to file (code above) that exceed the
+                // max count we can load into memory.
+                if (entries.size() < FREQMAN_MAX_PER_FILE) {
+                    entries.push_back({current_frequency, ""});
                     show_max_index();  // Display updated frequency list size
                 }
             }
         } else {
-            nav_.display_modal("Error", "Cannot open " + loaded_file_name + ".TXT\nfor appending freq.");
-            bigdisplay_update(-1);  // After showing an error
+            nav_.display_modal("Error", "Cannot open " + loaded_path.filename().string() + "\nfor appending freq.");
+            bigdisplay_update(-1);  // Need to poke this control after displaying modal?
         }
     };
 
@@ -566,108 +528,78 @@ ScannerView::ScannerView(
     field_lock_wait.set_value(2);
 
     field_squelch.on_change = [this](int32_t v) { squelch = v; };
-    field_squelch.set_value(-10);
+    field_squelch.set_value(-30);
 
-    // LEARN FREQUENCIES
-    std::string scanner_txt = "SCANNER";
-    frequency_file_load(scanner_txt);
+    // LOAD FREQUENCIES
+    frequency_file_load(default_scan_file);
 }
 
-void ScannerView::frequency_file_load(std::string file_name, bool stop_all_before) {
-    bool found_range{false};
-    bool found_single{false};
-    freqman_index_t def_mod_index{-1};
-    freqman_index_t def_bw_index{-1};
-    freqman_index_t def_step_index{-1};
+void ScannerView::frequency_file_load(const fs::path& path) {
+    freqman_index_t def_mod_index{freqman_invalid_index};
+    freqman_index_t def_bw_index{freqman_invalid_index};
+    freqman_index_t def_step_index{freqman_invalid_index};
 
-    // stop everything running now if required
-    if (stop_all_before) {
-        scan_thread->stop();
-        frequency_list.clear();  // clear the existing frequency list (expected behavior)
-        description_list.clear();
+    FreqmanDB db;
+    if (!db.open(path)) {
+        text_current_desc.set("NO " + path.filename().string());
+        loaded_path = default_scan_file;
+        return;
     }
 
-    if (load_freqman_file(file_name, database)) {
-        loaded_file_name = file_name;                            // keep loaded filename in memory
-        for (auto& entry : database) {                           // READ LINE PER LINE
-            if (frequency_list.size() < FREQMAN_MAX_PER_FILE) {  // We got space!
-                //
-                // Get modulation & bw & step from file if specified
-                // Note these values could be different for each line in the file, but we only look at the first one
-                //
-                // Note that freqman requires a very specific string for these parameters,
-                // so check syntax in frequency file if specified value isn't being loaded
-                //
-                if (def_mod_index == -1)
-                    def_mod_index = entry.modulation;
+    entries.clear();
+    loaded_path = path;
+    Optional<scanner_range_t> range;
 
-                if (def_bw_index == -1)
-                    def_bw_index = entry.bandwidth;
+    for (auto entry : db) {
+        if (is_invalid(def_mod_index))
+            def_mod_index = entry.modulation;
 
-                if (def_step_index == -1)
-                    def_step_index = entry.step;
+        if (is_invalid(def_bw_index))
+            def_bw_index = entry.bandwidth;
 
-                // Get frequency
-                if (entry.type == RANGE) {
-                    if (!found_range) {
-                        // Set Start & End Search Range instead of populating the small in-memory frequency table
-                        // NOTE:  There may be multiple single frequencies in file, but only one search range is supported.
-                        found_range = true;
-                        frequency_range.min = entry.frequency_a;
-                        button_manual_start.set_text(to_string_short_freq(frequency_range.min));
-                        frequency_range.max = entry.frequency_b;
-                        button_manual_end.set_text(to_string_short_freq(frequency_range.max));
-                    }
-                } else if (entry.type == SINGLE) {
-                    found_single = true;
-                    frequency_list.push_back(entry.frequency_a);
-                    description_list.push_back(entry.description);
-                } else if (entry.type == HAMRADIO) {
-                    // For HAM repeaters, add both receive & transmit frequencies to scan list and modify description
-                    // (FUTURE fw versions might handle these differently)
-                    found_single = true;
-                    frequency_list.push_back(entry.frequency_a);
-                    description_list.push_back("R:" + entry.description);
+        if (is_invalid(def_step_index))
+            def_step_index = entry.step;
 
-                    if ((entry.frequency_a != entry.frequency_b) &&
-                        (frequency_list.size() < FREQMAN_MAX_PER_FILE)) {
-                        frequency_list.push_back(entry.frequency_b);
-                        description_list.push_back("T:" + entry.description);
-                    }
-                }
-            } else {
-                break;  // No more space: Stop reading the txt file !
-            }
+        switch (entry.type) {
+            case freqman_type::Single:
+                entries.push_back({entry.frequency_a, entry.description});
+                break;
+            case freqman_type::HamRadio:
+                entries.push_back({entry.frequency_a, "R: " + entry.description});
+                entries.push_back({entry.frequency_b, "T: " + entry.description});
+                break;
+            case freqman_type::Range:
+                // NB: Only the first range will be loaded.
+                if (!range)
+                    range = {entry.frequency_a, entry.frequency_b};
+                break;
+            default:
+                break;
         }
-    } else {
-        loaded_file_name = "SCANNER";  // back to the default frequency file
-        desc_current_index.set(" NO " + file_name + ".TXT FILE ...");
+
+        if (entries.size() >= FREQMAN_MAX_PER_FILE)
+            break;
     }
 
-    desc_freq_list_scan = loaded_file_name + ".TXT";
-    if (desc_freq_list_scan.length() > 23) {  // Truncate description and add ellipses if long file name
-        desc_freq_list_scan.resize(20);
-        desc_freq_list_scan = desc_freq_list_scan + "...";
-    }
+    if (is_valid(def_mod_index) && def_mod_index != (freqman_index_t)field_mode.selected_index_value())
+        field_mode.set_by_value(def_mod_index);
 
-    if ((def_mod_index != -1) && (def_mod_index != (freqman_index_t)field_mode.selected_index_value()))
-        field_mode.set_by_value(def_mod_index);  // Update mode (also triggers a change callback that disables & reenables RF background)
-
-    if (def_bw_index != -1)  // Update BW if specified in file
+    if (is_valid(def_bw_index))
         field_bw.set_selected_index(def_bw_index);
 
-    if (def_step_index != -1)  // Update step if specified in file
+    if (is_valid(def_step_index))
         field_step.set_selected_index(def_step_index);
 
-    audio::output::stop();
+    // Found range, set it and update UI.
+    if (range) {
+        frequency_range = *range;
+        button_manual_start.set_text(to_string_short_freq(frequency_range.min));
+        button_manual_end.set_text(to_string_short_freq(frequency_range.max));
+    }
 
-    if (userpause)  // If user-paused, resume
-        user_resume();
-
-    // Scan list if we found one, otherwise do manual range search
-    manual_search = !found_single;
-
-    start_scan_thread();
+    // Scan entries if any, otherwise do manual range search.
+    manual_search = entries.empty();
+    restart_scan();
 }
 
 void ScannerView::update_squelch_while_paused(int32_t max_db) {
@@ -756,7 +688,8 @@ void ScannerView::user_resume() {
     userpause = false;                                            // Resume scanning
 }
 
-void ScannerView::change_mode(freqman_index_t new_mod) {  // Before this, do a scan_thread->stop();  After this do a start_scan_thread()
+// Before this, do a scan_thread->stop();  After this do a start_scan_thread()
+void ScannerView::change_mode(freqman_index_t new_mod) {
     using option_t = std::pair<std::string, int32_t>;
     using options_t = std::vector<option_t>;
     options_t bw;
@@ -793,22 +726,41 @@ void ScannerView::change_mode(freqman_index_t new_mod) {  // Before this, do a s
 
 void ScannerView::start_scan_thread() {
     receiver_model.enable();
+    // Disable squelch on the model because RSSI handler is where the
+    // actual squelching is applied for this app.
     receiver_model.set_squelch_level(0);
     show_max_index();
 
     // Start Scanner Thread
-    // FUTURE: Consider passing additional control flags (fwd,userpause,etc) to scanner thread at start (perhaps in a data structure)
     if (manual_search) {
         button_manual_search.set_text("SCAN");  // Update meaning of Manual Scan button
-        desc_current_index.set(desc_freq_range_search);
+        text_current_desc.set("SEARCHING...");
         scan_thread = std::make_unique<ScannerThread>(frequency_range, field_step.selected_index_value());
     } else {
         button_manual_search.set_text("SRCH");  // Update meaning of Manual Scan button
-        desc_current_index.set(desc_freq_list_scan);
-        scan_thread = std::make_unique<ScannerThread>(frequency_list);
+        text_current_desc.set(loaded_filename());
+
+        // TODO: just pass ref to the thread?
+        std::vector<rf::Frequency> frequency_list;
+        frequency_list.reserve(entries.size());
+        for (const auto& entry : entries)
+            frequency_list.push_back(entry.freq);
+
+        scan_thread = std::make_unique<ScannerThread>(std::move(frequency_list));
     }
 
     scan_thread->set_scanning_direction(fwd);
 }
 
+void ScannerView::restart_scan() {
+    audio::output::stop();
+    if (scan_thread)  // STOP SCANNER THREAD
+        scan_thread->stop();
+
+    if (userpause)  // If user-paused, resume
+        user_resume();
+
+    start_scan_thread();  // RESTART SCANNER THREAD in selected mode
+}
+
 } /* namespace ui */

firmware/application/apps/ui_scanner.hpp

@@ -20,19 +20,20 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "ui.hpp"
-#include "receiver_model.hpp"
+#include "audio.hpp"
+#include "analog_audio_app.hpp"
+#include "baseband_api.hpp"
+#include "file.hpp"
+#include "freqman.hpp"
+#include "freqman_db.hpp"
+#include "portapack_persistent_memory.hpp"
 #include "radio_state.hpp"
+#include "receiver_model.hpp"
+#include "string_format.hpp"
+#include "ui.hpp"
+#include "ui_mictx.hpp"
 #include "ui_receiver.hpp"
 #include "ui_styles.hpp"
-#include "freqman.hpp"
-#include "analog_audio_app.hpp"
-#include "audio.hpp"
-#include "ui_mictx.hpp"
-#include "portapack_persistent_memory.hpp"
-#include "baseband_api.hpp"
-#include "string_format.hpp"
-#include "file.hpp"
 
 #define SCANNER_SLEEP_MS 50  // ms that Scanner Thread sleeps per loop
 #define STATISTICS_UPDATES_PER_SEC 10
@@ -40,10 +41,28 @@
 
 namespace ui {
 
+// TODO: There is too much duplicated data in these classes.
+// ScannerThread should just use more from the View.
+// Or perhaps ScannerThread should just be in the View.
+
+// TODO: Too many functions mix work and UI update.
+// Consolidate UI fixup to a single function.
+
+// TODO: Just use freqman_entry.
+struct scanner_entry_t {
+    rf::Frequency freq;
+    std::string description;
+};
+
+struct scanner_range_t {
+    int64_t min;
+    int64_t max;
+};
+
 class ScannerThread {
    public:
     ScannerThread(std::vector<rf::Frequency> frequency_list);
-    ScannerThread(const jammer::jammer_range_t& frequency_range, size_t def_step_hz);
+    ScannerThread(const scanner_range_t& frequency_range, size_t def_step_hz);
     ~ScannerThread();
 
     void set_scanning(const bool v);
@@ -65,7 +84,7 @@ class ScannerThread {
 
    private:
     std::vector<rf::Frequency> frequency_list_{};
-    jammer::jammer_range_t frequency_range_{false, 0, 0};
+    scanner_range_t frequency_range_{0, 0};
     size_t def_step_hz_{0};
     Thread* thread{nullptr};
 
@@ -89,10 +108,6 @@ class ScannerView : public View {
     void focus() override;
 
     std::string title() const override { return "Scanner"; };
-    std::vector<rf::Frequency> frequency_list{};
-    std::vector<string> description_list{};
-
-    // void set_parent_rect(const Rect new_parent_rect) override;
 
    private:
     app_settings::SettingsManager settings_{
@@ -102,18 +117,21 @@ class ScannerView : public View {
     RxRadioState radio_state_{};
 
     void start_scan_thread();
+    void restart_scan();
     void change_mode(freqman_index_t mod_type);
     void show_max_index();
     void scan_pause();
     void scan_resume();
     void user_resume();
-    void frequency_file_load(std::string file_name, bool stop_all_before = false);
+    void frequency_file_load(const std::filesystem::path& path);
     void bigdisplay_update(int32_t);
     void update_squelch_while_paused(int32_t max_db);
     void on_statistics_update(const ChannelStatistics& statistics);
     void handle_retune(int64_t freq, uint32_t freq_idx);
 
-    jammer::jammer_range_t frequency_range{false, 0, 0};  // perfect for manual scan task too...
+    std::string loaded_filename() const;
+
+    scanner_range_t frequency_range{0, 0};
     int32_t squelch{0};
     uint32_t browse_timer{0};
     uint32_t lock_timer{0};
@@ -122,10 +140,12 @@ class ScannerView : public View {
     rf::Frequency bigdisplay_current_frequency{0};
     uint32_t browse_wait{0};
     uint32_t lock_wait{0};
-    freqman_db database{};
-    std::string loaded_file_name;
+
+    std::filesystem::path loaded_path{};
+    std::vector<scanner_entry_t> entries{};
     uint32_t current_index{0};
     rf::Frequency current_frequency{0};
+
     bool userpause{false};
     bool manual_search{false};
     bool fwd{true};  // to preserve direction setting even if scan_thread restarted
@@ -137,9 +157,6 @@ class ScannerView : public View {
         BDC_RED
     };
 
-    std::string desc_freq_range_search = "SEARCHING...";
-    std::string desc_freq_list_scan = "";
-
     Labels labels{
         {{0 * 8, 0 * 16}, "LNA:   VGA:   AMP:  VOL:", Color::light_grey()},
         {{0 * 8, 1 * 16}, "BW:       SQ:    Wsa:   Wsl:", Color::light_grey()},
@@ -204,7 +221,7 @@ class ScannerView : public View {
         {4 * 8, 3 * 16, 18 * 8, 16},
     };
 
-    Text desc_current_index{
+    Text text_current_desc{
         {0, 4 * 16, 240 - 6 * 8, 16},
     };
 

firmware/application/apps/ui_settings.hpp

@@ -482,7 +482,7 @@ class SetEncoderDialView : public View {
         {20 * 8, 3 * 16},
         6,
         {{"LOW", encoder_dial_sensitivity::DIAL_SENSITIVITY_LOW},
-         {"NORMAL", encoder_dial_sensitivity::DIAL_SENSITIVITY_MEDIUM},
+         {"NORMAL", encoder_dial_sensitivity::DIAL_SENSITIVITY_NORMAL},
          {"HIGH", encoder_dial_sensitivity::DIAL_SENSITIVITY_HIGH}}};
 
     Button button_save{

firmware/application/apps/ui_spectrum_painter.cpp

@@ -20,13 +20,14 @@
  */
 
 #include "ui_spectrum_painter.hpp"
+
 #include "bmp.hpp"
 #include "baseband_api.hpp"
-
-#include "ui_fileman.hpp"
-#include "io_file.hpp"
 #include "file.hpp"
+#include "io_file.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "ui_fileman.hpp"
+#include "ui_freqman.hpp"
 
 using namespace portapack;
 

firmware/application/apps/ui_text_editor.cpp

@@ -72,6 +72,7 @@ void TextViewer::paint(Painter& painter) {
         paint_state_.first_line = first_line;
         paint_state_.first_col = first_col;
         paint_state_.redraw_text = true;
+        paint_state_.line = UINT32_MAX;  // forget old cursor position when overwritten
     }
 
     if (paint_state_.redraw_text) {
@@ -221,6 +222,10 @@ void TextViewer::paint_text(Painter& painter, uint32_t line, uint16_t col) {
                  r.top() + (int)i * char_height,
                  clear_width * char_width, char_height},
                 style().background);
+
+        // if cursor line got overwritten, disable XOR of old cursor when displaying new cursor
+        if (i == paint_state_.line)
+            paint_state_.line = UINT32_MAX;
     }
 }
 
@@ -228,21 +233,32 @@ void TextViewer::paint_cursor(Painter& painter) {
     if (!has_focus())
         return;
 
-    auto draw_cursor = [this, &painter](uint32_t line, uint16_t col, Color c) {
-        auto r = screen_rect();
-        line = line - paint_state_.first_line;
-        col = col - paint_state_.first_col;
+    auto xor_cursor = [this, &painter](int32_t line, uint16_t col) {
+        int cursor_width = char_width + 1;
+        int x = (col - paint_state_.first_col) * char_width - 1;
+        if (x < 0) {  // cursor is one pixel narrower when in left column
+            cursor_width--;
+            x = 0;
+        }
+        int y = screen_rect().top() + (line - paint_state_.first_line) * char_height;
 
-        painter.draw_rectangle(
-            {(int)col * char_width - 1,
-             r.top() + (int)line * char_height,
-             char_width + 1, char_height},
-            c);
+        // Converting one row at a time to reduce buffer size
+        auto pbuf8 = cursor_.pixel_buffer8;
+        auto pbuf = cursor_.pixel_buffer;
+        for (auto col = 0; col < char_height; col++) {
+            // Annoyingly, read_pixels uses a 24-bit pixel format vs draw_pixels which uses 16-bit
+            portapack::display.read_pixels({x, y + col, cursor_width, 1}, pbuf8, cursor_width);
+            for (auto i = 0; i < cursor_width; i++)
+                pbuf[i] = Color(pbuf8[i].r, pbuf8[i].g, pbuf8[i].b).v ^ 0xFFFF;
+            portapack::display.draw_pixels({x, y + col, cursor_width, 1}, pbuf, cursor_width);
+        }
     };
 
-    // Clear old cursor. CONSIDER: XOR cursor?
-    draw_cursor(paint_state_.line, paint_state_.col, style().background);
-    draw_cursor(cursor_.line, cursor_.col, style().foreground);
+    if (paint_state_.line != UINT32_MAX)  // only XOR old cursor if it still appears on the screen
+        xor_cursor(paint_state_.line, paint_state_.col);
+
+    xor_cursor(cursor_.line, cursor_.col);
+
     paint_state_.line = cursor_.line;
     paint_state_.col = cursor_.col;
 }
@@ -301,6 +317,38 @@ void TextEditorMenu::hide_children(bool hidden) {
 
 /* TextEditorView ***************************************************/
 
+static fs::path get_temp_path(const fs::path& path) {
+    if (!path.empty())
+        return path + "~";
+
+    return {};
+}
+
+static void delete_temp_file(const fs::path& path) {
+    auto temp_path = get_temp_path(path);
+    if (!temp_path.empty()) {
+        delete_file(temp_path);
+    }
+}
+
+static void save_temp_file(const fs::path& path) {
+    delete_file(path);
+    copy_file(get_temp_path(path), path);
+}
+
+static void show_save_prompt(
+    NavigationView& nav,
+    std::function<void()> on_save,
+    std::function<void()> continuation) {
+    nav.display_modal(
+        "Save?", "       Save changes?", YESNO,
+        [on_save](bool choice) {
+            if (choice && on_save)
+                on_save();
+        });
+    nav.set_on_pop(continuation);
+}
+
 TextEditorView::TextEditorView(NavigationView& nav)
     : nav_{nav} {
     add_children(
@@ -381,9 +429,7 @@ TextEditorView::TextEditorView(NavigationView& nav)
     };
 
     menu.on_exit() = [this]() {
-        show_save_prompt([this]() {
-            nav_.pop();
-        });
+        nav_.pop();
     };
 
     button_menu.on_select = [this]() {
@@ -402,7 +448,15 @@ TextEditorView::TextEditorView(NavigationView& nav, const fs::path& path)
 }
 
 TextEditorView::~TextEditorView() {
-    delete_temp_file();
+    // NB: Be careful here. The UI will render after this instance
+    // has been destroyed. Everything needed to render the UI
+    // and perform the save actions must be value captured.
+    if (file_dirty_) {
+        ui::show_save_prompt(
+            nav_,
+            [p = path_]() { ui::save_temp_file(p); },
+            [p = std::move(path_)]() { delete_temp_file(p); });
+    }
 }
 
 void TextEditorView::on_show() {
@@ -415,12 +469,18 @@ void TextEditorView::on_show() {
 void TextEditorView::open_file(const fs::path& path) {
     file_.reset();
     viewer.clear_file();
-    delete_temp_file();
+    delete_temp_file(path_);
 
     path_ = {};
     file_dirty_ = false;
     has_temp_file_ = false;
-    auto result = FileWrapper::open(path);
+    auto result = FileWrapper::open(
+        path, false, [](uint32_t value, uint32_t total) {
+            Painter p;
+            auto percent = (value * 100) / total;
+            auto width = (percent * screen_width) / 100;
+            p.draw_hline({0, 16}, width, Color::yellow());
+        });
 
     if (!result) {
         nav_.display_modal("Read Error", "Cannot open file:\n" + result.error().what());
@@ -516,13 +576,10 @@ void TextEditorView::show_save_prompt(std::function<void()> continuation) {
         return;
     }
 
-    nav_.display_modal(
-        "Save?", "Save changes?", YESNO,
-        [this](bool choice) {
-            if (choice)
-                save_temp_file();
-        });
-    nav_.set_on_pop(continuation);
+    ui::show_save_prompt(
+        nav_,
+        [this]() { save_temp_file(); },
+        continuation);
 }
 
 void TextEditorView::prepare_for_write() {
@@ -531,33 +588,22 @@ void TextEditorView::prepare_for_write() {
     if (has_temp_file_)
         return;
 
+    // TODO: This would be nice to have but it causes a stack overflow in an ISR?
+    // Painter p;
+    // p.draw_string({2, 48}, Styles::yellow, "Creating temporary file...");
+
     // Copy to temp file on write.
     has_temp_file_ = true;
-    delete_temp_file();
-    copy_file(path_, get_temp_path());
-    file_->assume_file(get_temp_path());
-}
-
-void TextEditorView::delete_temp_file() const {
-    auto temp_path = get_temp_path();
-    if (!temp_path.empty()) {
-        delete_file(temp_path);
-    }
+    delete_temp_file(path_);
+    copy_file(path_, get_temp_path(path_));
+    file_->assume_file(get_temp_path(path_));
 }
 
 void TextEditorView::save_temp_file() {
     if (file_dirty_) {
-        delete_file(path_);
-        copy_file(get_temp_path(), path_);
+        ui::save_temp_file(path_);
         file_dirty_ = false;
     }
 }
 
-fs::path TextEditorView::get_temp_path() const {
-    if (!path_.empty())
-        return path_ + "~";
-
-    return {};
-}
-
 }  // namespace ui

firmware/application/apps/ui_text_editor.hpp

@@ -117,6 +117,10 @@ class TextViewer : public Widget {
         uint32_t line{};
         uint16_t col{};
         ScrollDirection dir{ScrollDirection::Vertical};
+
+        // Pixel buffer used for cursor XOR'ing - Max cursor width = Max char width + 1
+        ColorRGB888 pixel_buffer8[ui::char_width + 1]{};
+        Color pixel_buffer[ui::char_width + 1]{};
     } cursor_{};
 };
 
@@ -229,10 +233,7 @@ class TextEditorView : public View {
     void show_save_prompt(std::function<void()> continuation);
 
     void prepare_for_write();
-    void create_temp_file() const;
-    void delete_temp_file() const;
     void save_temp_file();
-    std::filesystem::path get_temp_path() const;
 
     NavigationView& nav_;
     std::unique_ptr<FileWrapper> file_{};

firmware/application/baseband_api.cpp

@@ -31,6 +31,16 @@
 
 #include "core_control.hpp"
 
+/* Set true to enable additional checks to ensure
+ * M4 and M0 are synchronized before passing messages. */
+static constexpr bool enforce_core_sync = true;
+
+/* Set true to enable check for baseband messages getting stuck.
+ * This implies the baseband thread is not dequeuing and has probably stalled.
+ * NB: This check adds a small amout of overhead to the message sending code
+ * and may impact application perf if it is sending a lot of messages. */
+static constexpr bool check_for_message_hang = true;
+
 using namespace portapack;
 
 namespace baseband {
@@ -40,8 +50,18 @@ static void send_message(const Message* const message) {
     // another message is present before setting new message.
     shared_memory.baseband_message = message;
     creg::m0apptxevent::assert_event();
-    while (shared_memory.baseband_message)
-        ;
+
+    if constexpr (check_for_message_hang) {
+        auto count = UINT32_MAX;
+        while (shared_memory.baseband_message && --count)
+            /* spin */;
+
+        if (count == 0)
+            chDbgPanic("Baseband Send Fail");
+    } else {
+        while (shared_memory.baseband_message)
+            /* spin */;
+    }
 }
 
 void AMConfig::apply() const {
@@ -276,17 +296,28 @@ void set_spectrum_painter_config(const uint16_t width, const uint16_t height, bo
 
 static bool baseband_image_running = false;
 
-void run_image(const portapack::spi_flash::image_tag_t image_tag) {
+void run_image(const spi_flash::image_tag_t image_tag) {
     if (baseband_image_running) {
         chDbgPanic("BBRunning");
     }
 
     creg::m4txevent::clear();
+    shared_memory.clear_baseband_ready();
 
-    m4_init(image_tag, portapack::memory::map::m4_code, false);
+    m4_init(image_tag, memory::map::m4_code, false);
     baseband_image_running = true;
 
     creg::m4txevent::enable();
+
+    if constexpr (enforce_core_sync) {
+        // Wait up to 3 seconds for baseband to start handling events.
+        auto count = 3'000u;
+        while (!shared_memory.baseband_ready && --count)
+            chThdSleepMilliseconds(1);
+
+        if (count == 0)
+            chDbgPanic("Baseband Sync Fail");
+    }
 }
 
 void shutdown() {
@@ -321,6 +352,11 @@ void set_sample_rate(const uint32_t sample_rate) {
     send_message(&message);
 }
 
+void set_oversample_rate(OversampleRate oversample_rate) {
+    OversampleRateConfigMessage message{oversample_rate};
+    send_message(&message);
+}
+
 void capture_start(CaptureConfig* const config) {
     CaptureConfigMessage message{config};
     send_message(&message);

firmware/application/baseband_api.hpp

@@ -95,6 +95,7 @@ void spectrum_streaming_start();
 void spectrum_streaming_stop();
 
 void set_sample_rate(const uint32_t sample_rate);
+void set_oversample_rate(OversampleRate oversample_rate);
 void capture_start(CaptureConfig* const config);
 void capture_stop();
 void replay_start(ReplayConfig* const config);

firmware/application/bitmap.hpp

@@ -3819,6 +3819,44 @@ static constexpr Bitmap bitmap_icon_looking{
     {16, 16},
     bitmap_icon_looking_data};
 
+static constexpr uint8_t bitmap_icon_add_data[] = {
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0xF8,
+    0x1F,
+    0xF8,
+    0x1F,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0x80,
+    0x01,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+};
+static constexpr Bitmap bitmap_icon_add{
+    {16, 16},
+    bitmap_icon_add_data};
+
 static constexpr uint8_t bitmap_icon_delete_data[] = {
     0x00,
     0x00,
@@ -5569,6 +5607,44 @@ static constexpr Bitmap bitmap_icon_speaker_and_headphones_mute{
     {16, 16},
     bitmap_icon_speaker_and_headphones_mute_data};
 
+static constexpr uint8_t bitmap_icon_shift_data[] = {
+    0x00,
+    0x00,
+    0x80,
+    0x00,
+    0xC0,
+    0x01,
+    0xE0,
+    0x03,
+    0xF0,
+    0x07,
+    0xF8,
+    0x0F,
+    0xFC,
+    0x1F,
+    0xE0,
+    0x03,
+    0xE0,
+    0x03,
+    0xE0,
+    0x03,
+    0x20,
+    0x02,
+    0xE0,
+    0x03,
+    0x20,
+    0x02,
+    0xE0,
+    0x03,
+    0x00,
+    0x00,
+    0x00,
+    0x00,
+};
+static constexpr Bitmap bitmap_icon_shift{
+    {16, 16},
+    bitmap_icon_shift_data};
+
 } /* namespace ui */
 
 #endif /*__BITMAP_HPP__*/

firmware/application/core_control.cpp

@@ -20,21 +20,20 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "core_control.hpp"
-
-#include "hal.h"
-
-#include "lpc43xx_cpp.hpp"
-using namespace lpc43xx;
-
-#include "message.hpp"
 #include "baseband_api.hpp"
+#include "core_control.hpp"
+#include "hal.h"
+#include "lpc43xx_cpp.hpp"
 #include "lz4.h"
+#include "message.hpp"
 
 #include <cstring>
 
-void m4_init(const portapack::spi_flash::image_tag_t image_tag, const portapack::memory::region_t to, const bool full_reset) {
-    const portapack::spi_flash::chunk_t* chunk = reinterpret_cast<const portapack::spi_flash::chunk_t*>(portapack::spi_flash::images.base());
+using namespace lpc43xx;
+using namespace portapack;
+
+void m4_init(const spi_flash::image_tag_t image_tag, const memory::region_t to, const bool full_reset) {
+    const spi_flash::chunk_t* chunk = reinterpret_cast<const spi_flash::chunk_t*>(spi_flash::images.base());
     while (chunk->tag) {
         if (chunk->tag == image_tag) {
             const void* src = &chunk->data[0];
@@ -49,9 +48,8 @@ void m4_init(const portapack::spi_flash::image_tag_t image_tag, const portapack:
             LPC_CREG->M4MEMMAP = to.base();
 
             /* Reset M4 core and optionally all peripherals */
-            LPC_RGU->RESET_CTRL[0] = (full_reset) ? (1 << 1)   // PERIPH_RST
-                                                  : (1 << 13)  // M4_RST
-                ;
+            LPC_RGU->RESET_CTRL[0] = (full_reset) ? (1 << 1)    // PERIPH_RST
+                                                  : (1 << 13);  // M4_RST
 
             return;
         }

firmware/application/field_binder.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __FIELD_BINDER_H__
+#define __FIELD_BINDER_H__
+
+/* There's a common pattern that appears in applications that use
+ * field widgets. The field value is set, on_change and on_select
+ * handlers are registered. on_select will read the value and
+ * set the new value once changed. on_change will be called which
+ * will write the new value to the backing variable. */
+
+struct binding_traits {
+};
+
+template <typename T>
+constexpr auto get_traits() {
+    return {};
+}
+
+template <typename TField, typename TTraits = get_traits<TField>()>
+class FieldBinding {
+};
+
+#endif /*__FIELD_BINDER_H__*/

firmware/application/file.cpp

@@ -21,12 +21,17 @@
  */
 
 #include "file.hpp"
+#include "complex.hpp"
 
 #include <algorithm>
 #include <codecvt>
 #include <cstring>
 #include <locale>
 
+namespace fs = std::filesystem;
+static const fs::path c8_ext{u".C8"};
+static const fs::path c16_ext{u".C16"};
+
 Optional<File::Error> File::open_fatfs(const std::filesystem::path& filename, BYTE mode) {
     auto result = f_open(&f, reinterpret_cast<const TCHAR*>(filename.c_str()), mode);
     if (result == FR_OK) {
@@ -45,8 +50,11 @@ Optional<File::Error> File::open_fatfs(const std::filesystem::path& filename, BY
     }
 }
 
-Optional<File::Error> File::open(const std::filesystem::path& filename, bool read_only) {
+Optional<File::Error> File::open(const std::filesystem::path& filename, bool read_only, bool create) {
     BYTE mode = read_only ? FA_READ : FA_READ | FA_WRITE;
+    if (create)
+        mode |= FA_OPEN_ALWAYS;
+
     return open_fatfs(filename, mode);
 }
 
@@ -252,12 +260,9 @@ std::filesystem::path next_filename_matching_pattern(const std::filesystem::path
 std::vector<std::filesystem::path> scan_root_files(const std::filesystem::path& directory,
                                                    const std::filesystem::path& extension) {
     std::vector<std::filesystem::path> file_list{};
-
-    for (const auto& entry : std::filesystem::directory_iterator(directory, extension)) {
-        if (std::filesystem::is_regular_file(entry.status())) {
-            file_list.push_back(entry.path());
-        }
-    }
+    scan_root_files(directory, extension, [&file_list](const std::filesystem::path& p) {
+        file_list.push_back(p);
+    });
 
     return file_list;
 }
@@ -287,7 +292,7 @@ std::filesystem::filesystem_error rename_file(
 std::filesystem::filesystem_error copy_file(
     const std::filesystem::path& file_path,
     const std::filesystem::path& dest_path) {
-    // Decent compromise between memory and speed.
+    // 512 seems to be the largest block size FatFS likes.
     constexpr size_t buffer_size = 512;
     uint8_t buffer[buffer_size];
     File src;
@@ -324,10 +329,11 @@ FATTimestamp file_created_date(const std::filesystem::path& file_path) {
 std::filesystem::filesystem_error make_new_file(
     const std::filesystem::path& file_path) {
     File f;
-    auto result = f.create(file_path);
-    return result.is_valid()
-               ? result.value()
-               : std::filesystem::filesystem_error{};
+    auto error = f.create(file_path);
+    if (error)
+        return *error;
+
+    return {};
 }
 
 std::filesystem::filesystem_error make_new_directory(
@@ -506,14 +512,26 @@ bool path_iequal(
     return false;
 }
 
+bool is_cxx_capture_file(const path& filename) {
+    auto ext = filename.extension();
+    return path_iequal(c8_ext, ext) || path_iequal(c16_ext, ext);
+}
+
+uint8_t capture_file_sample_size(const path& filename) {
+    if (path_iequal(filename.extension(), c8_ext))
+        return sizeof(complex8_t);
+    if (path_iequal(filename.extension(), c16_ext))
+        return sizeof(complex16_t);
+    return 0;
+}
+
 directory_iterator::directory_iterator(
-    std::filesystem::path path,
-    std::filesystem::path wild)
-    : pattern{wild} {
+    const std::filesystem::path& path,
+    const std::filesystem::path& wild)
+    : path_{path}, wild_{wild} {
     impl = std::make_shared<Impl>();
-    const auto result = f_findfirst(&impl->dir, &impl->filinfo,
-                                    reinterpret_cast<const TCHAR*>(path.c_str()),
-                                    reinterpret_cast<const TCHAR*>(pattern.c_str()));
+    auto result = f_findfirst(&impl->dir, &impl->filinfo,
+                              path_.tchar(), wild_.tchar());
     if (result != FR_OK || impl->filinfo.fname[0] == (TCHAR)'\0') {
         impl.reset();
         // TODO: Throw exception if/when I enable exceptions...
@@ -550,6 +568,17 @@ bool is_directory(const path& file_path) {
     return fr == FR_OK && is_directory(static_cast<file_status>(filinfo.fattrib));
 }
 
+bool is_empty_directory(const path& file_path) {
+    DIR dir;
+    FILINFO filinfo;
+
+    if (!is_directory(file_path))
+        return false;
+
+    auto result = f_findfirst(&dir, &filinfo, reinterpret_cast<const TCHAR*>(file_path.c_str()), (const TCHAR*)u"*");
+    return !((result == FR_OK) && (filinfo.fname[0] != (TCHAR)'\0'));
+}
+
 space_info space(const path& p) {
     DWORD free_clusters{0};
     FATFS* fs;

firmware/application/file.hpp

@@ -76,36 +76,30 @@ struct path {
         : _s{} {
     }
 
-    path(
-        const path& p)
+    path(const path& p)
         : _s{p._s} {
     }
 
-    path(
-        path&& p)
+    path(path&& p)
         : _s{std::move(p._s)} {
     }
 
     template <class Source>
-    path(
-        const Source& source)
+    path(const Source& source)
         : path{std::begin(source), std::end(source)} {
     }
 
     template <class InputIt>
-    path(
-        InputIt first,
-        InputIt last)
+    path(InputIt first,
+         InputIt last)
         : _s{first, last} {
     }
 
-    path(
-        const char16_t* const s)
+    path(const char16_t* const s)
         : _s{s} {
     }
 
-    path(
-        const TCHAR* const s)
+    path(const TCHAR* const s)
         : _s{reinterpret_cast<const std::filesystem::path::value_type*>(s)} {
     }
 
@@ -132,6 +126,10 @@ struct path {
         return native().c_str();
     }
 
+    const TCHAR* tchar() const {
+        return reinterpret_cast<const TCHAR*>(native().c_str());
+    }
+
     const string_type& native() const {
         return _s;
     }
@@ -149,7 +147,7 @@ struct path {
     }
 
     path& operator/=(const path& p) {
-        if (_s.back() != preferred_separator)
+        if (_s.back() != preferred_separator && p._s.front() != preferred_separator)
             _s += preferred_separator;
         _s += p._s;
         return *this;
@@ -170,6 +168,8 @@ path operator/(const path& lhs, const path& rhs);
 
 /* Case insensitive path equality on underlying "native" string. */
 bool path_iequal(const path& lhs, const path& rhs);
+bool is_cxx_capture_file(const path& filename);
+uint8_t capture_file_sample_size(const path& filename);
 
 using file_status = BYTE;
 
@@ -207,7 +207,8 @@ class directory_iterator {
     };
 
     std::shared_ptr<Impl> impl{};
-    const path pattern{};
+    std::filesystem::path path_{};
+    std::filesystem::path wild_{};
 
     friend bool operator!=(const directory_iterator& lhs, const directory_iterator& rhs);
 
@@ -219,7 +220,8 @@ class directory_iterator {
     using iterator_category = std::input_iterator_tag;
 
     directory_iterator() noexcept {};
-    directory_iterator(std::filesystem::path path, std::filesystem::path wild);
+    directory_iterator(const std::filesystem::path& path,
+                       const std::filesystem::path& wild);
 
     ~directory_iterator() {}
 
@@ -246,6 +248,7 @@ bool is_directory(const file_status s);
 bool is_regular_file(const file_status s);
 bool file_exists(const path& file_path);
 bool is_directory(const path& file_path);
+bool is_empty_directory(const path& file_path);
 
 space_info space(const path& p);
 
@@ -266,6 +269,13 @@ std::filesystem::filesystem_error make_new_file(const std::filesystem::path& fil
 std::filesystem::filesystem_error make_new_directory(const std::filesystem::path& dir_path);
 std::filesystem::filesystem_error ensure_directory(const std::filesystem::path& dir_path);
 
+template <typename TCallback>
+void scan_root_files(const std::filesystem::path& directory, const std::filesystem::path& extension, const TCallback& fn) {
+    for (const auto& entry : std::filesystem::directory_iterator(directory, extension)) {
+        if (std::filesystem::is_regular_file(entry.status()))
+            fn(entry.path());
+    }
+}
 std::vector<std::filesystem::path> scan_root_files(const std::filesystem::path& directory, const std::filesystem::path& extension);
 std::vector<std::filesystem::path> scan_root_directories(const std::filesystem::path& directory);
 
@@ -312,7 +322,7 @@ class File {
     File& operator=(const File&) = delete;
 
     // TODO: Return Result<>.
-    Optional<Error> open(const std::filesystem::path& filename, bool read_only = true);
+    Optional<Error> open(const std::filesystem::path& filename, bool read_only = true, bool create = false);
     Optional<Error> append(const std::filesystem::path& filename);
     Optional<Error> create(const std::filesystem::path& filename);
 

firmware/application/file_reader.hpp

@@ -36,7 +36,8 @@
  */
 
 /* Iterates lines in buffer split on '\n'.
- * NB: very basic iterator impl, don't try anything fancy with it. */
+ * NB: very basic iterator impl, don't try anything fancy with it.
+ * For example, you _must_ deref the iterator after advancing it. */
 template <typename BufferType>
 class BufferLineReader {
    public:
@@ -133,4 +134,18 @@ using FileLineReader = BufferLineReader<File>;
  * are used or they will dangle. */
 std::vector<std::string_view> split_string(std::string_view str, char c);
 
+/* Returns the number of lines in a file. */
+template <typename BufferType>
+uint32_t count_lines(BufferLineReader<BufferType>& reader) {
+    uint32_t count = 0;
+    auto it = reader.begin();
+
+    do {
+        *it;  // Necessary to force the file read.
+        ++count;
+    } while (++it != reader.end());
+
+    return count;
+}
+
 #endif

firmware/application/file_wrapper.hpp

@@ -26,6 +26,7 @@
 #include "file.hpp"
 #include "optional.hpp"
 
+#include <functional>
 #include <memory>
 #include <string_view>
 
@@ -59,6 +60,7 @@ class BufferWrapper {
     using Offset = uint32_t;
     using Line = uint32_t;
     using Column = uint32_t;
+    using Size = File::Size;
     using Range = struct {
         // Offset of the start, inclusive.
         Offset start;
@@ -74,6 +76,8 @@ class BufferWrapper {
     }
     virtual ~BufferWrapper() {}
 
+    std::function<void(Size, Size)> on_read_progress{};
+
     /* Prevent copies */
     BufferWrapper(const BufferWrapper&) = delete;
     BufferWrapper& operator=(const BufferWrapper&) = delete;
@@ -108,7 +112,7 @@ class BufferWrapper {
     }
 
     /* Gets the size of the buffer in bytes. */
-    File::Size size() const { return wrapped_->size(); }
+    Size size() const { return wrapped_->size(); }
 
     /* Get the count of the lines in the buffer. */
     uint32_t line_count() const { return line_count_; }
@@ -233,13 +237,23 @@ class BufferWrapper {
 
         line_count_ = start_line_;
         Offset offset = start_offset_;
+
+        // Report progress every N lines.
+        constexpr auto report_interval = 100u;
         auto result = next_newline(offset);
+        auto next_report = report_interval;
 
         while (result) {
             ++line_count_;
             if (newlines_.size() < max_newlines)
                 newlines_.push_back(*result);
             offset = *result + 1;
+
+            if (on_read_progress && line_count_ > next_report) {
+                on_read_progress(offset, size());
+                next_report = line_count_ + report_interval;
+            }
+
             result = next_newline(offset);
         }
     }
@@ -396,6 +410,9 @@ class BufferWrapper {
         // Number of bytes left to shift.
         Offset remaining = size() - src;
         Offset offset = size();
+        Size report_total = remaining;
+        Size report_interval = report_total / 8;
+        Size next_report = remaining - report_interval;
 
         while (remaining > 0) {
             offset -= std::min(remaining, buffer_size);
@@ -412,6 +429,11 @@ class BufferWrapper {
                 break;
 
             remaining -= *result;
+
+            if (on_read_progress && remaining <= next_report) {
+                on_read_progress(report_total - remaining, report_total);
+                next_report = remaining > report_interval ? remaining - report_interval : 0;
+            }
         }
     }
 
@@ -423,6 +445,9 @@ class BufferWrapper {
 
         char buffer[buffer_size];
         auto offset = src;
+        Size report_total = size();
+        Size report_interval = report_total / 8;
+        Size next_report = offset + report_interval;
 
         while (true) {
             wrapped_->seek(offset);
@@ -437,6 +462,11 @@ class BufferWrapper {
                 break;
 
             offset += *result;
+
+            if (on_read_progress && offset >= next_report) {
+                on_read_progress(offset, report_total);
+                next_report = offset + report_interval;
+            }
         }
 
         // Delete the extra bytes at the end of the file.
@@ -462,13 +492,19 @@ class FileWrapper : public BufferWrapper<File, 64> {
     template <typename T>
     using Result = File::Result<T>;
     using Error = File::Error;
-    static Result<std::unique_ptr<FileWrapper>> open(const std::filesystem::path& path) {
+    static Result<std::unique_ptr<FileWrapper>> open(
+        const std::filesystem::path& path,
+        bool create = false,
+        std::function<void(Size, Size)> on_read_progress = nullptr) {
         auto fw = std::unique_ptr<FileWrapper>(new FileWrapper());
-        auto error = fw->file_.open(path, /*read_only*/ false);
+        auto error = fw->file_.open(path, /*read_only*/ false, create);
 
         if (error)
             return *error;
 
+        if (on_read_progress)
+            fw->on_read_progress = on_read_progress;
+
         fw->initialize();
         return fw;
     }

firmware/application/freqman.cpp

@@ -2,6 +2,7 @@
  * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
  * Copyright (C) 2016 Furrtek
  * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -22,466 +23,17 @@
  */
 
 #include "freqman.hpp"
-#include <algorithm>
+#include "ui_widget.hpp"
 
-using option_t = std::pair<std::string, int32_t>;
-using options_t = std::vector<option_t>;
+using option_t = ui::OptionsField::option_t;
+using options_t = ui::OptionsField::options_t;
 
-// TODO: Consolidate with receiver_model.
-// These definitions are spread all over and stiched together with indices.
-options_t freqman_entry_modulations = {
-    {"AM", 0},
-    {"NFM", 1},
-    {"WFM", 2},
-    {"SPEC", 3}};
-
-options_t freqman_entry_bandwidths[4] = {
-    {// AM
-     {"DSB 9k", 0},
-     {"DSB 6k", 1},
-     {"USB+3k", 2},
-     {"LSB-3k", 3},
-     {"CW", 4}},
-    {// NFM
-     {"8k5", 0},
-     {"11k", 1},
-     {"16k", 2}},
-    {
-        // WFM
-        {"40k", 2},
-        {"180k", 1},
-        {"200k", 0},
-    },
-    {
-        // SPEC
-        {"8k5", 8500},
-        {"11k", 11000},
-        {"16k", 16000},
-        {"25k", 25000},
-        {"50k", 50000},
-        {"100k", 100000},
-        {"250k", 250000},
-        {"500k", 500000}, /* Previous Limit bandwith Option with perfect micro SD write .C16 format operaton.*/
-        {"600k", 600000}, /* That extended option is still possible to record with FW version Mayhem v1.41 (< 2,5MB/sec) */
-        {"650k", 650000},
-        {"750k", 750000}, /* From this BW onwards, the LCD is ok, but the recorded file is decimated, (not real file size) */
-        {"1100k", 1100000},
-        {"1750k", 1750000},
-        {"2000k", 2000000},
-        {"2500k", 2500000},
-        {"2750k", 2750000},  // That is our max Capture option, to keep using later / 8 decimation (22Mhz sampling  ADC)
-    }};
-
-options_t freqman_entry_steps = {
-    {"0.1kHz      ", 100},
-    {"1kHz        ", 1000},
-    {"5kHz (SA AM)", 5000},
-    {"6.25kHz(NFM)", 6250},
-    {"8.33kHz(AIR)", 8330},
-    {"9kHz (EU AM)", 9000},
-    {"10kHz(US AM)", 10000},
-    {"12.5kHz(NFM)", 12500},
-    {"15kHz  (HFM)", 15000},
-    {"25kHz   (N1)", 25000},
-    {"30kHz (OIRT)", 30000},
-    {"50kHz  (FM1)", 50000},
-    {"100kHz (FM2)", 100000},
-    {"250kHz  (N2)", 250000},
-    {"500kHz (WFM)", 500000},
-    {"1MHz        ", 1000000}};
-
-options_t freqman_entry_steps_short = {
-    {"0.1kHz", 100},
-    {"1kHz", 1000},
-    {"5kHz", 5000},
-    {"6.25kHz", 6250},
-    {"8.33kHz", 8330},
-    {"9kHz", 9000},
-    {"10kHz", 10000},
-    {"12.5kHz", 12500},
-    {"15kHz", 15000},
-    {"25kHz", 25000},
-    {"30kHz", 30000},
-    {"50kHz", 50000},
-    {"100kHz", 100000},
-    {"250kHz", 250000},
-    {"500kHz", 500000},
-    {"1MHz", 1000000}};
-
-bool load_freqman_file(std::string& file_stem, freqman_db& db, bool load_freqs, bool load_ranges, bool load_hamradios, uint8_t max_num_freqs) {
-    // swap with empty vector to ensure memory is immediately released
-    std::vector<freqman_entry>().swap(db);
-    File freqman_file{};
-    size_t length = 0, n = 0, file_position = 0;
-    char* pos = NULL;
-    char* line_start = NULL;
-    char* line_end = NULL;
-    std::string description{NULL};
-    rf::Frequency frequency_a = 0, frequency_b = 0;
-    char file_data[FREQMAN_READ_BUF_SIZE + 1] = {0};
-    freqman_entry_type type = NOTYPE;
-    freqman_index_t modulation = -1;
-    freqman_index_t bandwidth = -1;
-    freqman_index_t step = -1;
-    freqman_index_t tone = -1;
-    uint32_t tone_freq;
-    char c;
-
-    auto result = freqman_file.open("FREQMAN/" + file_stem + ".TXT");
-    if (result.is_valid())
-        return false;
-
-    while (1) {
-        // Read a FREQMAN_READ_BUF_SIZE block from file
-        freqman_file.seek(file_position);
-
-        memset(file_data, 0, FREQMAN_READ_BUF_SIZE + 1);
-        auto read_size = freqman_file.read(file_data, FREQMAN_READ_BUF_SIZE);
-        if (read_size.is_error())
-            return false;  // Read error
-
-        file_position += FREQMAN_READ_BUF_SIZE;
-
-        // Reset line_start to beginning of buffer
-        line_start = file_data;
-
-        // If EOF reached, insert 0x0A after, in case the last line doesn't have a C/R
-        if (read_size.value() < FREQMAN_READ_BUF_SIZE)
-            *(line_start + read_size.value()) = 0x0A;
-
-        // Look for complete lines in buffer
-        while ((line_end = strstr(line_start, "\x0A"))) {
-            *line_end = 0;  // Stop strstr() searches below at EOL
-            modulation = -1;
-            bandwidth = -1;
-            step = -1;
-            tone = -1;
-            type = NOTYPE;
-
-            frequency_a = frequency_b = 0;
-            // Read frequency
-            pos = strstr(line_start, "f=");
-            if (pos) {
-                pos += 2;
-                frequency_a = strtoll(pos, nullptr, 10);
-                type = SINGLE;
-            } else {
-                // ...or range
-                pos = strstr(line_start, "a=");
-                if (pos) {
-                    pos += 2;
-                    frequency_a = strtoll(pos, nullptr, 10);
-                    type = RANGE;
-                    pos = strstr(line_start, "b=");
-                    if (pos) {
-                        pos += 2;
-                        frequency_b = strtoll(pos, nullptr, 10);
-                    } else
-                        frequency_b = 0;
-                } else {
-                    // ... or hamradio
-                    pos = strstr(line_start, "r=");
-                    if (pos) {
-                        pos += 2;
-                        frequency_a = strtoll(pos, nullptr, 10);
-                        type = HAMRADIO;
-                        pos = strstr(line_start, "t=");
-                        if (pos) {
-                            pos += 2;
-                            frequency_b = strtoll(pos, nullptr, 10);
-                        } else
-                            frequency_b = frequency_a;
-                    } else
-                        frequency_a = 0;
-                }
-            }
-            // modulation if any
-            pos = strstr(line_start, "m=");
-            if (pos) {
-                pos += 2;
-                modulation = freqman_entry_get_modulation_from_str(pos);
-            }
-            // bandwidth if any
-            pos = strstr(line_start, "bw=");
-            if (pos) {
-                pos += 3;
-                bandwidth = freqman_entry_get_bandwidth_from_str(modulation, pos);
-            }
-            // step if any
-            pos = strstr(line_start, "s=");
-            if (pos) {
-                pos += 2;
-                step = freqman_entry_get_step_from_str_short(pos);
-            }
-            // ctcss tone if any
-            pos = strstr(line_start, "c=");
-            if (pos) {
-                pos += 2;
-                // find decimal point and replace with 0 if there is one, for strtoll
-                length = strcspn(pos, ".,\x0A");
-                if (pos + length <= line_end) {
-                    c = *(pos + length);
-                    *(pos + length) = 0;
-                    // ASCII Hz to integer Hz x 100
-                    tone_freq = strtoll(pos, nullptr, 10) * 100;
-                    // stuff saved character back into string in case it was not a decimal point
-                    *(pos + length) = c;
-                    // now get first digit after decimal point (10ths of Hz)
-                    pos += length + 1;
-                    if (c == '.' && *pos >= '0' && *pos <= '9')
-                        tone_freq += (*pos - '0') * 10;
-                    // convert tone_freq (100x the freq in Hz) to a tone_key index
-                    tone = tone_key_index_by_value(tone_freq);
-                }
-            }
-            // Read description until , or LF
-            pos = strstr(line_start, "d=");
-            if (pos) {
-                pos += 2;
-                length = std::min(strcspn(pos, ",\x0A"), (size_t)FREQMAN_DESC_MAX_LEN);
-                description = string(pos, length);
-                description.shrink_to_fit();
-            }
-            if ((type == SINGLE && load_freqs) || (type == RANGE && load_ranges) || (type == HAMRADIO && load_hamradios)) {
-                freqman_entry entry = {frequency_a, frequency_b, std::move(description), type, modulation, bandwidth, step, tone};
-                db.emplace_back(entry);
-                n++;
-                if (n > max_num_freqs) return true;
-            }
-
-            line_start = line_end + 1;
-            if (line_start - file_data >= FREQMAN_READ_BUF_SIZE) break;
-        }
-
-        if (read_size.value() != FREQMAN_READ_BUF_SIZE)
-            break;  // End of file
-
-        // Restart at beginning of last incomplete line
-        file_position -= (file_data + FREQMAN_READ_BUF_SIZE - line_start);
-    }
-
-    /* populate implicitly specified modulation / bandwidth */
-    if (db.size() > 2) {
-        modulation = db[0].modulation;
-        bandwidth = db[0].bandwidth;
-
-        for (unsigned int it = 1; it < db.size(); it++) {
-            if (db[it].modulation < 0) {
-                db[it].modulation = modulation;
-            } else {
-                modulation = db[it].modulation;
-            }
-            if (db[it].bandwidth < 0) {
-                db[it].bandwidth = bandwidth;
-            } else {
-                modulation = db[it].bandwidth;
-            }
-        }
-    }
-    db.shrink_to_fit();
-    return true;
-}
-
-bool get_freq_string(freqman_entry& entry, std::string& item_string) {
-    rf::Frequency frequency_a, frequency_b;
-
-    frequency_a = entry.frequency_a;
-    if (entry.type == SINGLE) {
-        // Single
-        item_string = "f=" + to_string_dec_uint(frequency_a / 1000) + to_string_dec_uint(frequency_a % 1000UL, 3, '0');
-    } else if (entry.type == RANGE) {
-        // Range
-        frequency_b = entry.frequency_b;
-        item_string = "a=" + to_string_dec_uint(frequency_a / 1000) + to_string_dec_uint(frequency_a % 1000UL, 3, '0');
-        item_string += ",b=" + to_string_dec_uint(frequency_b / 1000) + to_string_dec_uint(frequency_b % 1000UL, 3, '0');
-        if (entry.step >= 0) {
-            item_string += ",s=" + freqman_entry_get_step_string_short(entry.step);
-        }
-    } else if (entry.type == HAMRADIO) {
-        frequency_b = entry.frequency_b;
-        item_string = "r=" + to_string_dec_uint(frequency_a / 1000) + to_string_dec_uint(frequency_a % 1000UL, 3, '0');
-        item_string += ",t=" + to_string_dec_uint(frequency_b / 1000) + to_string_dec_uint(frequency_b % 1000UL, 3, '0');
-        if (entry.tone >= 0) {
-            item_string += ",c=" + tone_key_value_string(entry.tone);
-        }
-    }
-    if (entry.modulation >= 0 && (unsigned)entry.modulation < freqman_entry_modulations.size()) {
-        item_string += ",m=" + freqman_entry_get_modulation_string(entry.modulation);
-        if (entry.bandwidth >= 0 && (unsigned)entry.bandwidth < freqman_entry_bandwidths[entry.modulation].size()) {
-            item_string += ",bw=" + freqman_entry_get_bandwidth_string(entry.modulation, entry.bandwidth);
-        }
-    }
-    if (entry.description.size())
-        item_string += ",d=" + entry.description;
-
-    return true;
-}
-
-bool delete_freqman_file(std::string& file_stem) {
-    File freqman_file;
-    std::string freq_file_path = "/FREQMAN/" + file_stem + ".TXT";
-    delete_file(freq_file_path);
-    return false;
-}
-
-bool save_freqman_file(std::string& file_stem, freqman_db& db) {
-    File freqman_file;
-    std::string freq_file_path = "/FREQMAN/" + file_stem + ".TXT";
-    delete_file(freq_file_path);
-    auto result = freqman_file.create(freq_file_path);
-    if (!result.is_valid()) {
-        for (size_t n = 0; n < db.size(); n++) {
-            std::string line;
-            get_freq_string(db[n], line);
-            freqman_file.write_line(line);
-        }
-        return true;
-    }
-    return false;
-}
-
-bool create_freqman_file(std::string& file_stem, File& freqman_file) {
-    auto result = freqman_file.create("FREQMAN/" + file_stem + ".TXT");
-
-    if (result.is_valid())
-        return false;
-
-    return true;
-}
-
-std::string freqman_item_string(freqman_entry& entry, size_t max_length) {
-    std::string item_string;
-
-    switch (entry.type) {
-        case SINGLE:
-            item_string = to_string_short_freq(entry.frequency_a) + "M: " + entry.description;
-            break;
-        case RANGE:
-            item_string = "R: " + entry.description;
-            break;
-        case HAMRADIO:
-            item_string = "H: " + entry.description;
-            break;
-        default:
-            item_string = "!UNKNOW TYPE " + entry.description;
-            break;
-    }
-
-    if (item_string.size() > max_length)
-        return item_string.substr(0, max_length - 3) + "...";
-
-    return item_string;
-}
-
-void freqman_set_modulation_option(OptionsField& option) {
-    option.set_options(freqman_entry_modulations);
-}
-
-void freqman_set_bandwidth_option(freqman_index_t modulation, OptionsField& option) {
-    option.set_options(freqman_entry_bandwidths[modulation]);
-}
-
-void freqman_set_step_option(OptionsField& option) {
-    option.set_options(freqman_entry_steps);
-}
-
-void freqman_set_step_option_short(OptionsField& option) {
-    option.set_options(freqman_entry_steps_short);
-}
-
-std::string freqman_entry_get_modulation_string(freqman_index_t modulation) {
-    if (modulation < 0 || (unsigned)modulation >= freqman_entry_modulations.size()) {
-        return std::string("");  // unknown modulation
-    }
-    return freqman_entry_modulations[modulation].first;
-}
-
-std::string freqman_entry_get_bandwidth_string(freqman_index_t modulation, freqman_index_t bandwidth) {
-    if (modulation < 0 || (unsigned)modulation >= freqman_entry_modulations.size()) {
-        return std::string("");  // unknown modulation
-    }
-    if (bandwidth < 0 || (unsigned)bandwidth > freqman_entry_bandwidths[modulation].size()) {
-        return std::string("");  // unknown modulation
-    }
-    return freqman_entry_bandwidths[modulation][bandwidth].first;
-}
-
-std::string freqman_entry_get_step_string(freqman_index_t step) {
-    if (step < 0 || (unsigned)step >= freqman_entry_steps.size()) {
-        return std::string("");  // unknown modulation
-    }
-    return freqman_entry_steps[step].first;
-}
-
-std::string freqman_entry_get_step_string_short(freqman_index_t step) {
-    if (step < 0 || (unsigned)step >= freqman_entry_steps_short.size()) {
-        return std::string("");  // unknown modulation
-    }
-    return freqman_entry_steps_short[step].first;
-}
-
-int32_t freqman_entry_get_modulation_value(freqman_index_t modulation) {
-    if (modulation < 0 || (unsigned)modulation >= freqman_entry_modulations.size()) {
-        return -1;  // unknown modulation
-    }
-    return freqman_entry_modulations[modulation].second;
-}
-
-int32_t freqman_entry_get_bandwidth_value(freqman_index_t modulation, freqman_index_t bandwidth) {
-    if (modulation < 0 || (unsigned)modulation >= freqman_entry_modulations.size()) {
-        return -1;  // unknown modulation
-    }
-    if (bandwidth < 0 || (unsigned)bandwidth > freqman_entry_bandwidths[modulation].size()) {
-        return -1;  // unknown bandwidth for modulation
-    }
-    return freqman_entry_bandwidths[modulation][bandwidth].second;
-}
+extern options_t freqman_steps;
+extern const option_t* find_by_index(const options_t& options, freqman_index_t index);
 
+/* Option value lookup. */
 int32_t freqman_entry_get_step_value(freqman_index_t step) {
-    if (step < 0 || (unsigned)step >= freqman_entry_steps.size()) {
-        return -1;  // unknown modulation
-    }
-    return freqman_entry_steps[step].second;
-}
-
-freqman_index_t freqman_entry_get_modulation_from_str(char* str) {
-    if (!str)
-        return -1;
-    for (freqman_index_t index = 0; (unsigned)index < freqman_entry_modulations.size(); index++) {
-        if (strncmp(freqman_entry_modulations[index].first.c_str(), str, freqman_entry_modulations[index].first.size()) == 0)
-            return index;
-    }
-    return -1;
-}
-
-freqman_index_t freqman_entry_get_bandwidth_from_str(freqman_index_t modulation, char* str) {
-    if (!str)
-        return -1;
-    if (modulation < 0 || (unsigned)modulation >= freqman_entry_modulations.size())
-        return -1;
-    for (freqman_index_t index = 0; (unsigned)index < freqman_entry_bandwidths[modulation].size(); index++) {
-        if (strncmp(freqman_entry_bandwidths[modulation][index].first.c_str(), str, freqman_entry_bandwidths[modulation][index].first.size()) == 0)
-            return index;
-    }
-    return -1;
-}
-
-freqman_index_t freqman_entry_get_step_from_str(char* str) {
-    if (!str)
-        return -1;
-    for (freqman_index_t index = 0; (unsigned)index < freqman_entry_steps.size(); index++) {
-        if (strncmp(freqman_entry_steps[index].first.c_str(), str, freqman_entry_steps[index].first.size()) == 0)
-            return index;
-    }
-    return -1;
-}
-
-freqman_index_t freqman_entry_get_step_from_str_short(char* str) {
-    if (!str)
-        return -1;
-    for (freqman_index_t index = 0; (unsigned)index < freqman_entry_steps_short.size(); index++) {
-        if (strncmp(freqman_entry_steps_short[index].first.c_str(), str, freqman_entry_steps_short[index].first.size()) == 0)
-            return index;
-    }
+    if (auto opt = find_by_index(freqman_steps, step))
+        return opt->second;
     return -1;
 }

firmware/application/freqman.hpp

@@ -2,6 +2,7 @@
  * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
  * Copyright (C) 2016 Furrtek
  * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -24,26 +25,10 @@
 #ifndef __FREQMAN_H__
 #define __FREQMAN_H__
 
-#include <cstring>
-#include <string>
-#include "file.hpp"
-#include "ui_receiver.hpp"
-#include "tone_key.hpp"
-#include "string_format.hpp"
-#include "ui_widget.hpp"
+#include "freqman_db.hpp"
 
-#define FREQMAN_DESC_MAX_LEN 24  // This is the number of characters that can be drawn in front of "R: TEXT..." before taking a full screen line
-#define FREQMAN_MAX_PER_FILE 90  // Maximum of entries we can read. This is a hardware limit
-                                 // It was tested and lowered to leave a bit of space to the caller
-
-#define FREQMAN_READ_BUF_SIZE 96  // max freqman line size including desc is 90, + a bit of space
-
-using namespace ui;
-using namespace std;
-using namespace tonekey;
-
-// needs to be signed as -1 means not set
-typedef int8_t freqman_index_t;
+// Defined for back-compat.
+#define FREQMAN_MAX_PER_FILE freqman_default_max_entries
 
 enum freqman_error : int8_t {
     NO_ERROR = 0,
@@ -52,72 +37,14 @@ enum freqman_error : int8_t {
     ERROR_DUPLICATE
 };
 
-enum freqman_entry_type : int8_t {
-    SINGLE = 0,  // f=
-    RANGE,       // a=,b=
-    HAMRADIO,    // r=,t=
-    NOTYPE       // undetected
-};
-
 enum freqman_entry_modulation : uint8_t {
     AM_MODULATION = 0,
     NFM_MODULATION,
     WFM_MODULATION,
-    SPEC_MODULATION,
+    SPEC_MODULATION
 };
 
-// Entry step placed for AlainD freqman version (or any other enhanced version)
-enum freqman_entry_step : int8_t {
-    AM_US,    // 10 kHz   AM/CB
-    AM_EUR,   // 9 kHz	LW/MW
-    NFM_1,    // 12,5 kHz (Analogic PMR 446)
-    NFM_2,    // 6,25 kHz  (Digital PMR 446)
-    FM_1,     // 100 kHz
-    FM_2,     // 50 kHz
-    N_1,      // 25 kHz
-    N_2,      // 250 kHz
-    AIRBAND,  // AIRBAND 8,33 kHz
-};
-
-struct freqman_entry {
-    rf::Frequency frequency_a{0};               // 'f=freq' or 'a=freq_start' or 'r=recv_freq'
-    rf::Frequency frequency_b{0};               // 'b=freq_end' or 't=tx_freq'
-    std::string description{NULL};              // 'd=desc'
-    freqman_entry_type type{SINGLE};            // SINGLE,RANGE,HAMRADIO
-    freqman_index_t modulation{AM_MODULATION};  // AM,NFM,WFM
-    freqman_index_t bandwidth{0};               // AM_DSB, ...
-    freqman_index_t step{0};                    // 5khz (SA AM,...
-    tone_index tone{0};                         // 0XZ, 11 1ZB,...
-};
-
-using freqman_db = std::vector<freqman_entry>;
-
-bool load_freqman_file(std::string& file_stem, freqman_db& db, bool load_freqs = true, bool load_ranges = true, bool load_hamradios = true, uint8_t max_num_freqs = FREQMAN_MAX_PER_FILE);
-bool get_freq_string(freqman_entry& entry, std::string& item_string);
-bool delete_freqman_file(std::string& file_stem);
-bool save_freqman_file(std::string& file_stem, freqman_db& db);
-bool create_freqman_file(std::string& file_stem, File& freqman_file);
-
-std::string freqman_item_string(freqman_entry& item, size_t max_length);
-
-void freqman_set_bandwidth_option(freqman_index_t modulation, OptionsField& option);
-void freqman_set_modulation_option(OptionsField& option);
-void freqman_set_step_option(OptionsField& option);
-void freqman_set_step_option_short(OptionsField& option);
-void freqman_set_tone_option(OptionsField& option);
-
-std::string freqman_entry_get_modulation_string(freqman_index_t modulation);
-std::string freqman_entry_get_bandwidth_string(freqman_index_t modulation, freqman_index_t bandwidth);
-std::string freqman_entry_get_step_string(freqman_index_t step);
-std::string freqman_entry_get_step_string_short(freqman_index_t step);
-
-int32_t freqman_entry_get_modulation_value(freqman_index_t modulation);
-int32_t freqman_entry_get_bandwidth_value(freqman_index_t modulation, freqman_index_t bandwidth);
+// TODO: Can these be removed after Recon is migrated to FreqmanDB?
 int32_t freqman_entry_get_step_value(freqman_index_t step);
 
-freqman_index_t freqman_entry_get_modulation_from_str(char* str);
-freqman_index_t freqman_entry_get_bandwidth_from_str(freqman_index_t modulation, char* str);
-freqman_index_t freqman_entry_get_step_from_str(char* str);
-freqman_index_t freqman_entry_get_step_from_str_short(char* str);
-
 #endif /*__FREQMAN_H__*/

firmware/application/freqman_db.cpp

@@ -0,0 +1,529 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "convert.hpp"
+#include "file.hpp"
+#include "file_reader.hpp"
+#include "freqman_db.hpp"
+#include "string_format.hpp"
+#include "tone_key.hpp"
+#include "utility.hpp"
+
+#include <array>
+#include <cctype>
+#include <string_view>
+#include <vector>
+
+namespace fs = std::filesystem;
+
+const std::filesystem::path freqman_dir{u"/FREQMAN"};
+const std::filesystem::path freqman_extension{u".TXT"};
+
+// NB: Don't include UI headers to keep this code unit testable.
+using option_t = std::pair<std::string, int32_t>;
+using options_t = std::vector<option_t>;
+
+options_t freqman_modulations = {
+    {"AM", 0},
+    {"NFM", 1},
+    {"WFM", 2},
+    {"SPEC", 3},
+};
+
+options_t freqman_bandwidths[4] = {
+    {
+        // AM
+        {"DSB 9k", 0},
+        {"DSB 6k", 1},
+        {"USB+3k", 2},
+        {"LSB-3k", 3},
+        {"CW", 4},
+    },
+    {
+        // NFM
+        {"8k5", 0},
+        {"11k", 1},
+        {"16k", 2},
+    },
+    {
+        // WFM
+        {"40k", 2},
+        {"180k", 1},
+        {"200k", 0},
+    },
+    {
+        // SPEC -- TODO: these should be indexes.
+        {"12k5", 12500},
+        {"16k", 16000},
+        {"20k", 20000},
+        {"25k", 25000},
+        {"50k", 50000},
+        {"100k", 100000},
+        {"250k", 250000},
+        {"500k", 500000}, /* Previous Limit bandwith Option with perfect micro SD write .C16 format operaton.*/
+        {"600k", 600000}, /* That extended option is still possible to record with FW version Mayhem v1.41 (< 2,5MB/sec) */
+        {"650k", 650000},
+        {"750k", 750000}, /* From this BW onwards, the LCD is ok, but the recorded file is decimated, (not real file size) */
+        {"1100k", 1100000},
+        {"1750k", 1750000},
+        {"2000k", 2000000},
+        {"2500k", 2500000},
+        {"2750k", 2750000},  // That is our max Capture option, to keep using later / 8 decimation (22Mhz sampling  ADC)
+    },
+};
+
+// TODO: these should be indexes.
+options_t freqman_steps = {
+    {"0.1kHz      ", 100},
+    {"1kHz        ", 1000},
+    {"5kHz (SA AM)", 5000},
+    {"6.25kHz(NFM)", 6250},
+    {"8.33kHz(AIR)", 8330},
+    {"9kHz (EU AM)", 9000},
+    {"10kHz(US AM)", 10000},
+    {"12.5kHz(NFM)", 12500},
+    {"15kHz  (HFM)", 15000},
+    {"25kHz   (N1)", 25000},
+    {"30kHz (OIRT)", 30000},
+    {"50kHz  (FM1)", 50000},
+    {"100kHz (FM2)", 100000},
+    {"250kHz  (N2)", 250000},
+    {"500kHz (WFM)", 500000},
+    {"1MHz        ", 1000000},
+};
+
+// TODO: these should be indexes.
+options_t freqman_steps_short = {
+    {"0.1kHz", 100},
+    {"1kHz", 1000},
+    {"5kHz", 5000},
+    {"6.25kHz", 6250},
+    {"8.33kHz", 8330},
+    {"9kHz", 9000},
+    {"10kHz", 10000},
+    {"12.5kHz", 12500},
+    {"15kHz", 15000},
+    {"25kHz", 25000},
+    {"30kHz", 30000},
+    {"50kHz", 50000},
+    {"100kHz", 100000},
+    {"250kHz", 250000},
+    {"500kHz", 500000},
+    {"1MHz", 1000000},
+};
+
+uint8_t find_by_name(const options_t& options, std::string_view name) {
+    for (auto ix = 0u; ix < options.size(); ++ix)
+        if (options[ix].first == name)
+            return ix;
+
+    return freqman_invalid_index;
+}
+
+const option_t* find_by_index(const options_t& options, freqman_index_t index) {
+    if (index < options.size())
+        return &options[index];
+    else
+        return nullptr;
+}
+
+/* Impl for next round of changes.
+ *template <typename T, size_t N>
+ *const T* find_by_name(const std::array<T, N>& info, std::string_view name) {
+ *    for (const auto& it : info) {
+ *        if (it.name == name)
+ *            return &it;
+ *    }
+ *
+ *    return nullptr;
+ *}
+ */
+
+bool operator==(const freqman_entry& lhs, const freqman_entry& rhs) {
+    auto equal = lhs.type == rhs.type &&
+                 lhs.frequency_a == rhs.frequency_a &&
+                 lhs.description == rhs.description &&
+                 lhs.modulation == rhs.modulation &&
+                 lhs.bandwidth == rhs.bandwidth;
+
+    if (!equal)
+        return false;
+
+    if (lhs.type == freqman_type::Range) {
+        equal = lhs.frequency_b == rhs.frequency_b &&
+                lhs.step == rhs.step;
+    } else if (lhs.type == freqman_type::HamRadio) {
+        equal = lhs.frequency_b == rhs.frequency_b &&
+                lhs.tone == rhs.tone;
+    }
+
+    return equal;
+}
+
+std::string freqman_entry_get_modulation_string(freqman_index_t modulation) {
+    if (auto opt = find_by_index(freqman_modulations, modulation))
+        return opt->first;
+    return {};
+}
+
+std::string freqman_entry_get_bandwidth_string(freqman_index_t modulation, freqman_index_t bandwidth) {
+    if (modulation < freqman_modulations.size()) {
+        if (auto opt = find_by_index(freqman_bandwidths[modulation], bandwidth))
+            return opt->first;
+    }
+    return {};
+}
+
+std::string freqman_entry_get_step_string(freqman_index_t step) {
+    if (auto opt = find_by_index(freqman_steps, step))
+        return opt->first;
+    return {};
+}
+
+std::string freqman_entry_get_step_string_short(freqman_index_t step) {
+    if (auto opt = find_by_index(freqman_steps_short, step))
+        return opt->first;
+    return {};
+}
+
+const std::filesystem::path get_freqman_path(const std::string& stem) {
+    return freqman_dir / stem + freqman_extension;
+}
+
+bool create_freqman_file(const std::string& file_stem) {
+    auto fs_error = make_new_file(get_freqman_path(file_stem));
+    return fs_error.ok();
+}
+
+bool load_freqman_file(const std::string& file_stem, freqman_db& db, freqman_load_options options) {
+    return parse_freqman_file(get_freqman_path(file_stem), db, options);
+}
+
+void delete_freqman_file(const std::string& file_stem) {
+    delete_file(get_freqman_path(file_stem));
+}
+
+std::string pretty_string(const freqman_entry& entry, size_t max_length) {
+    std::string str;
+
+    switch (entry.type) {
+        case freqman_type::Single:
+            str = to_string_short_freq(entry.frequency_a) + "M: " + entry.description;
+            break;
+        case freqman_type::Range:
+            str = to_string_rounded_freq(entry.frequency_a, 1) + "M-" +
+                  to_string_rounded_freq(entry.frequency_b, 1) + "M: " + entry.description;
+            break;
+        case freqman_type::HamRadio:
+            str = "R:" + to_string_rounded_freq(entry.frequency_a, 1) + "M,T:" +
+                  to_string_rounded_freq(entry.frequency_b, 1) + "M: " + entry.description;
+            break;
+        case freqman_type::Raw:
+            str = entry.description;
+            break;
+        default:
+            str = "UNK:" + entry.description;
+            break;
+    }
+
+    // Truncate. '+' indicates if string has been truncated.
+    if (str.size() > max_length)
+        return str.substr(0, max_length - 1) + "+";
+
+    return str;
+}
+
+std::string to_freqman_string(const freqman_entry& entry) {
+    std::string serialized;
+    serialized.reserve(0x80);
+
+    // Append a key=value to the string.
+    auto append_field = [&serialized](std::string_view name, std::string_view value) {
+        if (!serialized.empty())
+            serialized += ",";
+        serialized += std::string{name} + "=" + std::string{value};
+    };
+
+    switch (entry.type) {
+        case freqman_type::Single:
+            append_field("f", to_string_dec_uint64(entry.frequency_a));
+            break;
+        case freqman_type::Range:
+            append_field("a", to_string_dec_uint64(entry.frequency_a));
+            append_field("b", to_string_dec_uint64(entry.frequency_b));
+
+            if (is_valid(entry.step))
+                append_field("s", freqman_entry_get_step_string_short(entry.step));
+            break;
+        case freqman_type::HamRadio:
+            append_field("r", to_string_dec_uint64(entry.frequency_a));
+            append_field("t", to_string_dec_uint64(entry.frequency_b));
+
+            if (is_valid(entry.tone))
+                append_field("c", tonekey::tone_key_value_string(entry.tone));
+            break;
+        case freqman_type::Raw:
+            return entry.description;
+        default:
+            return {};
+    };
+
+    if (is_valid(entry.modulation) && entry.modulation < freqman_modulations.size()) {
+        append_field("m", freqman_entry_get_modulation_string(entry.modulation));
+
+        if (is_valid(entry.bandwidth) && (unsigned)entry.bandwidth < freqman_bandwidths[entry.modulation].size())
+            append_field("bw", freqman_entry_get_bandwidth_string(entry.modulation, entry.bandwidth));
+    }
+
+    if (entry.description.size() > 0)
+        append_field("d", entry.description);
+
+    serialized.shrink_to_fit();
+    return serialized;
+}
+
+freqman_index_t parse_tone_key(std::string_view value) {
+    // Split into whole and fractional parts.
+    auto parts = split_string(value, '.');
+    int32_t tone_freq = 0;
+    int32_t whole_part = 0;
+    parse_int(parts[0], whole_part);
+
+    // Tones are stored as frequency / 100 for some reason.
+    // E.g. 14572 would be 145.7 (NB: 1s place is dropped).
+    // TODO: Might be easier to just store the codes?
+    // Multiply the whole part by 100 to get the tone frequency.
+    tone_freq = whole_part * 100;
+
+    // Add the fractional part, if present.
+    if (parts.size() > 1) {
+        auto c = parts[1].front();
+        auto digit = std::isdigit(c) ? c - '0' : 0;
+        tone_freq += digit * 10;
+    }
+
+    return static_cast<freqman_index_t>(tonekey::tone_key_index_by_value(tone_freq));
+}
+
+bool parse_freqman_entry(std::string_view str, freqman_entry& entry) {
+    if (str.empty() || str[0] == '#')
+        return false;
+
+    entry = freqman_entry{};
+    auto cols = split_string(str, ',');
+
+    for (auto col : cols) {
+        if (col.empty())
+            continue;
+
+        auto pair = split_string(col, '=');
+        if (pair.size() != 2)
+            continue;
+
+        auto key = pair[0];
+        auto value = pair[1];
+
+        if (key == "a") {
+            entry.type = freqman_type::Range;
+            parse_int(value, entry.frequency_a);
+        } else if (key == "b") {
+            parse_int(value, entry.frequency_b);
+        } else if (key == "bw") {
+            // NB: Requires modulation to be set first
+            if (entry.modulation < std::size(freqman_bandwidths)) {
+                entry.bandwidth = find_by_name(freqman_bandwidths[entry.modulation], value);
+            }
+        } else if (key == "c") {
+            entry.tone = parse_tone_key(value);
+        } else if (key == "d") {
+            entry.description = trim(value);
+        } else if (key == "f") {
+            entry.type = freqman_type::Single;
+            parse_int(value, entry.frequency_a);
+        } else if (key == "m") {
+            entry.modulation = find_by_name(freqman_modulations, value);
+        } else if (key == "r") {
+            entry.type = freqman_type::HamRadio;
+            parse_int(value, entry.frequency_a);
+        } else if (key == "s") {
+            entry.step = find_by_name(freqman_steps_short, value);
+        } else if (key == "t") {
+            parse_int(value, entry.frequency_b);
+        }
+    }
+
+    return is_valid(entry);
+}
+
+bool parse_freqman_file(const fs::path& path, freqman_db& db, freqman_load_options options) {
+    FreqmanDB freqman_db;
+    freqman_db.set_read_raw(false);  // Don't return malformed lines.
+    if (!freqman_db.open(path))
+        return false;
+
+    // Attempt to avoid a re-alloc if possible.
+    db.clear();
+    db.reserve(freqman_db.entry_count());
+
+    for (auto entry : freqman_db) {
+        // Filter by entry type.
+        if (entry.type == freqman_type::Unknown ||
+            (entry.type == freqman_type::Single && !options.load_freqs) ||
+            (entry.type == freqman_type::Range && !options.load_ranges) ||
+            (entry.type == freqman_type::HamRadio && !options.load_hamradios)) {
+            continue;
+        }
+
+        // Use previous entry's mod/band if current's aren't set.
+        if (!db.empty()) {
+            if (is_invalid(entry.modulation))
+                entry.modulation = db.back()->modulation;
+            if (is_invalid(entry.bandwidth))
+                entry.bandwidth = db.back()->bandwidth;
+        }
+
+        // Move the entry onto the heap and push.
+        db.push_back(std::make_unique<freqman_entry>(std::move(entry)));
+
+        // Limit to max_entries when specified.
+        if (options.max_entries > 0 && db.size() >= options.max_entries)
+            break;
+    }
+
+    db.shrink_to_fit();
+    return true;
+}
+
+bool is_valid(const freqman_entry& entry) {
+    // No valid frequency combination was set.
+    if (entry.type == freqman_type::Unknown)
+        return false;
+
+    // Frequency A must be set for all types
+    if (entry.frequency_a == 0)
+        return false;
+
+    // Frequency B must be set for type Range or Ham Radio
+    if (entry.type == freqman_type::Range || entry.type == freqman_type::HamRadio) {
+        if (entry.frequency_b == 0)
+            return false;
+    }
+
+    // Ranges should have frequencies A <= B.
+    if (entry.type == freqman_type::Range) {
+        if (entry.frequency_a > entry.frequency_b)
+            return false;
+    }
+
+    // TODO: Consider additional validation:
+    // - Tone only on HamRadio.
+    // - Step only on Range
+    // - Fail on failed parse_int.
+    // - Fail if bandwidth set before modulation.
+
+    return true;
+}
+
+/* FreqmanDB ***********************************/
+
+bool FreqmanDB::open(const std::filesystem::path& path, bool create) {
+    auto result = FileWrapper::open(path, create);
+    if (!result)
+        return false;
+
+    wrapper_ = *std::move(result);
+    return true;
+}
+
+void FreqmanDB::close() {
+    wrapper_.reset();
+}
+
+freqman_entry FreqmanDB::operator[](Index index) const {
+    auto length = wrapper_->line_length(index);
+    auto line_text = wrapper_->get_text(index, 0, length);
+
+    if (line_text) {
+        freqman_entry entry;
+        if (parse_freqman_entry(*line_text, entry))
+            return entry;
+        else if (read_raw_) {
+            entry.type = freqman_type::Raw;
+            entry.description = trim(*line_text);
+            return entry;
+        }
+    }
+
+    return {};
+}
+
+void FreqmanDB::insert_entry(Index index, const freqman_entry& entry) {
+    index = clip<uint32_t>(index, 0u, entry_count());
+    wrapper_->insert_line(index);
+    replace_entry(index, entry);
+}
+
+void FreqmanDB::append_entry(const freqman_entry& entry) {
+    insert_entry(entry_count(), entry);
+}
+
+void FreqmanDB::replace_entry(Index index, const freqman_entry& entry) {
+    auto range = wrapper_->line_range(index);
+    if (!range)
+        return;
+
+    // Don't overwrite the '\n'.
+    range->end--;
+    wrapper_->replace_range(*range, to_freqman_string(entry));
+}
+
+void FreqmanDB::delete_entry(Index index) {
+    wrapper_->delete_line(index);
+}
+
+bool FreqmanDB::delete_entry(const freqman_entry& entry) {
+    auto it = find_entry(entry);
+    if (it == end())
+        return false;
+
+    delete_entry(it.index());
+    return true;
+}
+
+FreqmanDB::iterator FreqmanDB::find_entry(const freqman_entry& entry) {
+    return find_entry([&entry](const auto& other) {
+        return entry == other;
+    });
+}
+
+uint32_t FreqmanDB::entry_count() const {
+    // FileWrapper always presents a single line even for empty files.
+    return empty() ? 0u : wrapper_->line_count();
+}
+
+bool FreqmanDB::empty() const {
+    // FileWrapper always presents a single line even for empty files.
+    // A DB is only really empty if the file size is 0.
+    return !wrapper_ || wrapper_->size() == 0;
+}

firmware/application/freqman_db.hpp

@@ -0,0 +1,280 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __FREQMAN_DB_H__
+#define __FREQMAN_DB_H__
+
+#include "file.hpp"
+#include "file_wrapper.hpp"
+#include "utility.hpp"
+
+#include <array>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <vector>
+
+/* Defined in freqman_db.cpp */
+extern const std::filesystem::path freqman_dir;
+extern const std::filesystem::path freqman_extension;
+
+using freqman_index_t = uint8_t;
+constexpr freqman_index_t freqman_invalid_index = static_cast<freqman_index_t>(-1);
+
+/* Returns true if the value is not invalid_index. */
+constexpr bool is_valid(freqman_index_t index) {
+    return index != freqman_invalid_index;
+}
+
+/* Returns true if the value is invalid_index. */
+constexpr bool is_invalid(freqman_index_t index) {
+    return index == freqman_invalid_index;
+}
+
+enum class freqman_type : uint8_t {
+    Single,    // f=
+    Range,     // a=,b=
+    HamRadio,  // r=,t=
+    Raw,       // line content in description
+    Unknown,
+};
+
+/* Tables for next round of changes.
+ * // TODO: attempt to consolidate all of these values
+ * // and settings into a single location.
+ * // Should tone_keys get consolidated here too?
+ * enum class freqman_modulation : uint8_t {
+    AM,
+    NFM,
+    WFM,
+    SPEC,
+    Unknown,
+ * };
+ *
+ * struct freqman_modulation_info {
+ *     freqman_modulation modulation;
+ *     std::string_view name;
+ * };
+ *
+ * constexpr std::array<freqman_modulation_info, 5> freqman_modulations = {
+    freqman_modulation_info{ freqman_modulation::AM, "AM" },
+    freqman_modulation_info{ freqman_modulation::NFM, "NFM" },
+    freqman_modulation_info{ freqman_modulation::WFM, "WFM" },
+    freqman_modulation_info{ freqman_modulation::SPEC, "SPEC" },
+    freqman_modulation_info{ freqman_modulation::Unknown, "Unknown" }
+ * };
+ * static_assert(std::size(freqman_modulations) == (size_t)freqman_modulation::Unknown + 1);
+ *
+ * enum class freqman_step : uint8_t {
+    _100Hz,
+    _1kHz,
+    _5kHz,
+    _6_25kHz,
+    _8_33kHz,
+    _9kHz,
+    _10kHz,
+    _12_5kHz,
+    _15kHz,
+    _25kHz,
+    _30kHz,
+    _50kHz,
+    _100kHz,
+    _250kHz,
+    _500kHz,
+    _1MHz,
+    Unknown,
+ * };
+ *
+ * struct freqman_step_info {
+ *     freqman_step step;
+ *     std::string_view name;
+ *     std::string_view display_name;
+ *     uint32_t value;
+ * };
+ *
+ * // TODO: FrequencyStepView should use this list.
+ * constexpr std::array<freqman_step_info, 18> freqman_steps = {
+    freqman_step_info{ freqman_step::_100Hz,   "0.1kHz",  "0.1kHz      ", 100 },
+    freqman_step_info{ freqman_step::_1kHz,    "1kHz",    "1kHz        ", 1'000 },
+    freqman_step_info{ freqman_step::_5kHz,    "5kHz",    "5kHz (SA AM)", 5'000 },
+    freqman_step_info{ freqman_step::_6_25kHz, "6.25kHz", "6.25kHz(NFM)", 6'250 },
+    freqman_step_info{ freqman_step::_8_33kHz, "8.33kHz", "8.33kHz(AIR)", 8'330 },
+    freqman_step_info{ freqman_step::_9kHz,    "9kHz",    "9kHz (EU AM)", 9'000 },
+    freqman_step_info{ freqman_step::_10kHz,   "10kHz",   "10kHz(US AM)", 10'000 },
+    freqman_step_info{ freqman_step::_12_5kHz, "12.5kHz", "12.5kHz(NFM)", 12'500 },
+    freqman_step_info{ freqman_step::_15kHz,   "15kHz",   "15kHz  (HFM)", 15'000 },
+    freqman_step_info{ freqman_step::_25kHz,   "25kHz",   "25kHz   (N1)", 25'000 },
+    freqman_step_info{ freqman_step::_30kHz,   "30kHz",   "30kHz (OIRT)", 30'000 },
+    freqman_step_info{ freqman_step::_50kHz,   "50kHz",   "50kHz  (FM1)", 50'000 },
+    freqman_step_info{ freqman_step::_100kHz,  "100kHz",  "100kHz (FM2)", 100'000 },
+    freqman_step_info{ freqman_step::_250kHz,  "250kHz",  "250kHz  (N2)", 250'000 },
+    freqman_step_info{ freqman_step::_500kHz,  "500kHz",  "500kHz (WFM)", 500'000 },
+    freqman_step_info{ freqman_step::_1MHz,    "1MHz",    "1MHz        ", 1'000'000 },
+    freqman_step_info{ freqman_step::Unknown,  "Unknown", "Unknown     ", 0 },
+ * };
+ * static_assert(std::size(freqman_steps) == (size_t)freqman_step::Unknown + 1);
+*/
+
+/* Freqman Entry *******************************/
+struct freqman_entry {
+    int64_t frequency_a{0};     // 'f=freq' or 'a=freq_start' or 'r=recv_freq'
+    int64_t frequency_b{0};     // 'b=freq_end' or 't=tx_freq'
+    std::string description{};  // 'd=desc'
+    freqman_type type{freqman_type::Unknown};
+    freqman_index_t modulation{freqman_invalid_index};
+    freqman_index_t bandwidth{freqman_invalid_index};
+    freqman_index_t step{freqman_invalid_index};
+    freqman_index_t tone{freqman_invalid_index};
+};
+
+bool operator==(const freqman_entry& lhs, const freqman_entry& rhs);
+
+// TODO: These shouldn't be exported.
+std::string freqman_entry_get_modulation_string(freqman_index_t modulation);
+std::string freqman_entry_get_bandwidth_string(freqman_index_t modulation, freqman_index_t bandwidth);
+std::string freqman_entry_get_step_string(freqman_index_t step);
+std::string freqman_entry_get_step_string_short(freqman_index_t step);
+
+/* A reasonable maximum number of items to load from a freqman file.
+ * Apps using freqman_db should be tested and this value tuned to
+ * ensure app memory stability. */
+constexpr size_t freqman_default_max_entries = 150;
+
+struct freqman_load_options {
+    /* Loads all entries when set to 0. */
+    size_t max_entries{freqman_default_max_entries};
+    bool load_freqs{true};
+    bool load_ranges{true};
+    bool load_hamradios{true};
+};
+
+using freqman_entry_ptr = std::unique_ptr<freqman_entry>;
+using freqman_db = std::vector<freqman_entry_ptr>;
+
+/* Gets the full path for a given file stem (no extension). */
+const std::filesystem::path get_freqman_path(const std::string& stem);
+bool create_freqman_file(const std::string& file_stem);
+bool load_freqman_file(const std::string& file_stem, freqman_db& db, freqman_load_options options);
+void delete_freqman_file(const std::string& file_stem);
+
+/* Gets a pretty string representation for an entry. */
+std::string pretty_string(const freqman_entry& item, size_t max_length = 30);
+
+/* Gets the freqman file representation for an entry. */
+std::string to_freqman_string(const freqman_entry& entry);
+
+bool parse_freqman_entry(std::string_view str, freqman_entry& entry);
+bool parse_freqman_file(const std::filesystem::path& path, freqman_db& db, freqman_load_options options);
+
+/* Returns true if the entry is well-formed. */
+bool is_valid(const freqman_entry& entry);
+
+/* API wrapper over a Freqman file. Provides CRUD operations
+ * for freqman_entry instances that are read/written directly
+ * to the underlying file. */
+class FreqmanDB {
+   public:
+    using Index = FileWrapper::Line;
+
+    /* NB: This iterator is very basic: forward only, read-only. */
+    class iterator {
+       public:
+        iterator(FreqmanDB& db, Index index)
+            : db_{db}, index_{index} {}
+        iterator& operator++() {
+            index_++;
+
+            if (index_ >= db_.entry_count())
+                index_ = end_index;
+
+            return *this;
+        }
+        freqman_entry operator*() const {
+            return db_[index_];
+        }
+
+        bool operator==(const iterator& other) {
+            return &db_ == &other.db_ && index_ == other.index_;
+        }
+
+        bool operator!=(const iterator& other) {
+            return !(*this == other);
+        }
+
+        Index index() const {
+            return index_;
+        }
+
+        /* Value indicating the 'end' iterator. */
+        static constexpr Index end_index = (Index)-1;
+
+       private:
+        FreqmanDB& db_;
+        Index index_;
+    };
+
+    bool open(const std::filesystem::path& path, bool create = false);
+    void close();
+
+    freqman_entry operator[](Index index) const;
+    void insert_entry(Index index, const freqman_entry& entry);
+    void append_entry(const freqman_entry& entry);
+    void replace_entry(Index index, const freqman_entry& entry);
+    void delete_entry(Index index);
+    bool delete_entry(const freqman_entry& entry);
+
+    template <typename Fn>
+    iterator find_entry(const Fn& predicate) {
+        // TODO: use std::find, but need to make the iterator compliant.
+        auto it = begin();
+        const auto it_end = end();
+
+        while (it != it_end) {
+            if (predicate(*it))
+                return it;
+            ++it;
+        }
+
+        return it_end;
+    }
+    iterator find_entry(const freqman_entry& entry);
+
+    uint32_t entry_count() const;
+    bool empty() const;
+
+    /* When true, Raw entries are returned instead of Unknown. */
+    void set_read_raw(bool v) { read_raw_ = v; }
+    iterator begin() {
+        return {*this, 0};
+    }
+    iterator end() {
+        return {*this, iterator::end_index};
+    }
+
+   private:
+    std::unique_ptr<FileWrapper> wrapper_{};
+    bool read_raw_{true};
+};
+
+#endif /* __FREQMAN_DB_H__ */

firmware/application/hw/debounce.cpp

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2023 Mark Thompson
  *
  * This file is part of PortaPack.
  *
@@ -23,86 +24,128 @@
 
 #include "utility.hpp"
 
+uint8_t Debounce::state() {
+    bool v = state_to_report_;
+    simulated_pulse_ = false;
+    return v;
+}
+
+void Debounce::enable_repeat() {
+    repeat_enabled_ = true;
+}
+
+bool Debounce::get_long_press_enabled() const {
+    return long_press_enabled_;
+}
+
+void Debounce::set_long_press_enabled(bool v) {
+    long_press_enabled_ = v;
+}
+
+bool Debounce::long_press_occurred() {
+    bool v = long_press_occurred_;
+    long_press_occurred_ = false;
+    return v;
+}
+
 // Returns TRUE if button state changed (after debouncing)
 bool Debounce::feed(const uint8_t bit) {
     history_ = (history_ << 1) | (bit & 1);
 
-    // "Repeat" handling - simulated button release
-    if (repeat_ctr_) {
-        // Make sure the button is still being held continuously
-        if ((history_ == 0xFF) && !long_press_enabled_) {
-            // Simulate button press every REPEAT_SUBSEQUENT_DELAY ticks
-            if (--repeat_ctr_ == 0) {
-                state_ = !state_;
-                repeat_ctr_ = REPEAT_SUBSEQUENT_DELAY / 2;
-                return true;
-            }
-        } else {
-            // It's a real button release; stop simulating
-            repeat_ctr_ = 0;
-        }
-    }
-
-    if (state_ == 0) {
-        // Previous button state was 0 (released);
-        // Has button been held for DEBOUNCE_COUNT ticks?
-        if ((history_ & DEBOUNCE_MASK) == DEBOUNCE_MASK) {
+    // Has button been held for DEBOUNCE_COUNT ticks?
+    if ((history_ & DEBOUNCE_MASK) == DEBOUNCE_MASK) {
+        //
+        // Button is currently pressed;
+        // Was previous button state 0 (released)?
+        //
+        if (state_ == 0) {
+            //
+            // Button has been pressed (after filtering glitches), transition 0->1
+            //
             state_ = 1;
-            held_time_ = 0;
 
             // If long_press_enabled_, state() function masks the button press until it's released
             // or until LONG_PRESS_DELAY is reached
             if (long_press_enabled_) {
                 pulse_upon_release_ = true;
+                state_to_report_ = 0;
                 return false;
             }
+            state_to_report_ = 1;
+            return true;
+        }
+
+        // "Repeat" handling - simulated button release
+        if (repeat_ctr_ && !long_press_enabled_) {
+            // Simulate button press every REPEAT_SUBSEQUENT_DELAY ticks
+            // (by toggling reported state every 1/2 of the delay time)
+            if (--repeat_ctr_ == 0) {
+                state_to_report_ = !state_to_report_;
+                repeat_ctr_ = REPEAT_SUBSEQUENT_DELAY / 2;
+                return true;
+            }
+        }
+
+        // Keep track of how long button has been held
+        held_time_++;
+        if (pulse_upon_release_) {
+            // Button is being held down and long_press support is enabled for this key:
+            // if LONG_PRESS_DELAY is reached then finally report that switch is pressed and set flag
+            // indicating it was a LONG press
+            // (note that repeat_support and long_press support are mutually exclusive)
+            if (held_time_ >= LONG_PRESS_DELAY) {
+                pulse_upon_release_ = false;
+                long_press_occurred_ = true;
+                state_to_report_ = 1;
+                return true;
+            }
+        } else if (repeat_enabled_ && !long_press_enabled_) {
+            // Repeat support -- 4 directional buttons only (unless long_press is enabled)
+            if (held_time_ >= REPEAT_INITIAL_DELAY) {
+                // Delay reached; trigger repeat code on NEXT tick
+                repeat_ctr_ = 1;
+                held_time_ = 0;
+            }
+        }
+    } else if ((history_ & DEBOUNCE_MASK) == 0) {  // Has button been released for at least DEBOUNCE_COUNT ticks?
+        //
+        // Button is released;
+        // Was previous button state 1 (pressed)?
+        //
+        if (state_ == 1) {
+            //
+            // Button has been released (after filtering glitches), transition 1->0
+            //
+            state_ = 0;
+            long_press_occurred_ = false;
+
+            // If button released when long_press_enabled_ and before LONG_PRESS_DELAY was reached;
+            // allow state() function to finally return a single press indication (simulated pulse).
+            // Note: In long press mode, apps won't see button press until the button is released.
+            if (pulse_upon_release_) {
+                pulse_upon_release_ = false;
+                simulated_pulse_ = true;
+                state_to_report_ = 1;
+                return true;
+            }
+
+            state_to_report_ = 0;
+            return true;
+        }
+
+        // Reset reported state after application/event has cleared simulated_pulse_
+        if (state_to_report_ == 1 && !simulated_pulse_) {
+            state_to_report_ = 0;
             return true;
         }
     } else {
-        // Previous button state was 1 (pressed);
-        // Has button been released for DEBOUNCE_COUNT ticks?
-        if ((history_ & DEBOUNCE_MASK) == 0) {
-            // Button has been released when long_press_enabled_ and before LONG_PRESS_DELAY was reached;
-            // allow state() function to finally return a single press indication
-            // (in long press mode, apps won't see button press until the button is released)
-            if (pulse_upon_release_) {
-                // leaving state_==1 for one cycle
-                pulse_upon_release_ = 0;
-            } else {
-                state_ = 0;
-            }
-
-            // Reset long_press_occurred_ flag after button is released
-            long_press_occurred_ = false;
-            return true;
-        }
-
-        // Has button been held continuously?
-        if (history_ == 0xFF) {
-            held_time_++;
-            if (pulse_upon_release_) {
-                // Button is being held down and long_press support is enabled for this key:
-                // if LONG_PRESS_DELAY is reached then finally report that switch is pressed and set flag
-                // indicating it was a LONG press
-                // (note that repease_support and long_press support are mutually exclusive)
-                if (held_time_ == LONG_PRESS_DELAY) {
-                    long_press_occurred_ = true;
-                    pulse_upon_release_ = 0;
-                    held_time_ = 0;
-                    return true;
-                }
-            } else if (repeat_enabled_ && !long_press_enabled_) {
-                // Repeat support -- 4 directional buttons only (unless long_press is enabled)
-                if (held_time_ == REPEAT_INITIAL_DELAY) {
-                    // Delay reached; trigger repeat code on NEXT tick
-                    repeat_ctr_ = 1;
-                    held_time_ = 0;
-                }
-            }
-        } else {
-            // Button not continuously pressed; reset counter
-            held_time_ = 0;
-        }
+        //
+        // Button is in transition between states;
+        // Reset counters until button inputs are stable.
+        //
+        held_time_ = 0;
+        repeat_ctr_ = 0;
     }
+
     return false;
 }

firmware/application/hw/debounce.hpp

@@ -31,39 +31,37 @@
 // # of timer0 ticks before a held button starts being counted as repeated presses
 #define REPEAT_INITIAL_DELAY 250
 #define REPEAT_SUBSEQUENT_DELAY 92
-#define LONG_PRESS_DELAY 1000
+#define LONG_PRESS_DELAY 800
 
 class Debounce {
    public:
     bool feed(const uint8_t bit);
-
-    uint8_t state() const {
-        return (pulse_upon_release_) ? 0 : state_;
-    }
-
-    void enable_repeat() {
-        repeat_enabled_ = true;
-    }
-
-    void set_long_press_support(bool v) {
-        long_press_enabled_ = v;
-    }
-
-    bool long_press_occurred() {
-        bool v = long_press_occurred_;
-        long_press_occurred_ = false;
-        return v;
-    }
+    uint8_t state();
+    void enable_repeat();
+    bool get_long_press_enabled() const;
+    void set_long_press_enabled(bool v);
+    bool long_press_occurred();
 
    private:
-    uint8_t history_{0};
-    uint8_t state_{0};
-    bool repeat_enabled_{0};
-    uint16_t repeat_ctr_{0};
-    uint16_t held_time_{0};
-    bool pulse_upon_release_{0};
-    bool long_press_enabled_{0};
-    bool long_press_occurred_{0};
+    uint8_t history_{0};  // shift register of last 8 reads from button hardware state bit
+
+    uint8_t state_{0};  // actual button hardware state (after debounce logic), 1=pressed
+
+    uint8_t state_to_report_{0};  // pseudo button state reported by state() function (may be masked off or simulated presses)
+
+    bool repeat_enabled_{false};  // TRUE if this button is enabled to auto-repeat when held down (ignored if long_press_enabled)
+
+    uint16_t repeat_ctr_{0};  // used for timing auto-repeat simulated button presses when button is held down and repeat_enabled
+
+    uint16_t held_time_{0};  // number of ticks that the button has been held down (compared against REPEAT and LONG_PRESS delays)
+
+    bool pulse_upon_release_{false};  // TRUE when button is being held down when long_press_enabled and LONG_PRESS_DELAY hasn't been reached yet
+
+    bool simulated_pulse_{false};  // TRUE if a simulated button press is active following a short button press (only when long_press_enabled)
+
+    bool long_press_enabled_{false};  // TRUE when button is in long-press mode (takes precedence over the repeat_enabled flag)
+
+    bool long_press_occurred_{false};  // TRUE when button is being held down and LONG_PRESS_DELAY has been reached (only when long_press_enabled)
 };
 
 #endif /*__DEBOUNCE_H__*/

firmware/application/io_convert.cpp

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2023 Mark Thompson
+ *
+ * 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 "io_convert.hpp"
+#include "complex.hpp"
+
+namespace fs = std::filesystem;
+static const fs::path c8_ext = u".C8";
+
+namespace file_convert {
+
+// Convert buffer contents from c16 to c8.
+// Same buffer used for input & output; input size is bytes; output size is bytes/2.
+void c16_to_c8(const void* buffer, File::Size bytes) {
+    complex16_t* src = (complex16_t*)buffer;
+    complex8_t* dest = (complex8_t*)buffer;
+
+    // Shift isn't used here because it would amplify noise at center freq since it's a signed number
+    // i.e. ((-1 >> 8) << 8) = -256, whereas (-1 / 256) * 256 = 0
+    for (File::Size i = 0; i < bytes / sizeof(complex16_t); i++) {
+        auto re_out = src[i].real() / 256;
+        auto im_out = src[i].imag() / 256;
+        dest[i] = {(int8_t)re_out, (int8_t)im_out};
+    }
+}
+
+// Convert c8 buffer to c16 buffer.
+// Same buffer used for input & output; input size is bytes; output size is 2*bytes.
+void c8_to_c16(const void* buffer, File::Size bytes) {
+    complex8_t* src = (complex8_t*)buffer;
+    complex16_t* dest = (complex16_t*)buffer;
+    uint32_t i = bytes / sizeof(complex8_t);
+
+    if (i != 0) {
+        do {
+            i--;
+            auto re_out = (int16_t)src[i].real() * 256;  // C8 to C16 conversion;
+            auto im_out = (int16_t)src[i].imag() * 256;  // Can't shift signed numbers left, so using multiply
+            dest[i] = {(int16_t)re_out, (int16_t)im_out};
+        } while (i != 0);
+    }
+}
+
+} /* namespace file_convert */
+
+// Automatically enables C8/C16 conversion based on file extension
+Optional<File::Error> FileConvertReader::open(const std::filesystem::path& filename) {
+    convert_c8_to_c16 = path_iequal(filename.extension(), c8_ext);
+    return file_.open(filename);
+}
+
+// If C8 conversion enabled, half the number of bytes are read from the file & expanded to fill the whole buffer.
+File::Result<File::Size> FileConvertReader::read(void* const buffer, const File::Size bytes) {
+    auto read_result = file_.read(buffer, convert_c8_to_c16 ? bytes / 2 : bytes);
+    if (read_result.is_ok()) {
+        if (convert_c8_to_c16) {
+            file_convert::c8_to_c16(buffer, read_result.value());
+            read_result = read_result.value() * 2;
+        }
+        bytes_read_ += read_result.value();
+    }
+    return read_result;
+}
+
+// Automatically enables C8/C16 conversion based on file extension
+Optional<File::Error> FileConvertWriter::create(const std::filesystem::path& filename) {
+    convert_c16_to_c8 = path_iequal(filename.extension(), c8_ext);
+    return file_.create(filename);
+}
+
+// If C8 conversion is enabled, half the number of bytes are written to the file.
+File::Result<File::Size> FileConvertWriter::write(const void* const buffer, const File::Size bytes) {
+    if (convert_c16_to_c8) {
+        file_convert::c16_to_c8(buffer, bytes);
+    }
+    auto write_result = file_.write(buffer, convert_c16_to_c8 ? bytes / 2 : bytes);
+    if (write_result.is_ok()) {
+        if (convert_c16_to_c8) {
+            write_result = write_result.value() * 2;
+        }
+        bytes_written_ += write_result.value();
+    }
+    return write_result;
+}

firmware/application/io_convert.hpp

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2023 Mark Thompson
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include "io_file.hpp"
+
+#include "io.hpp"
+#include "file.hpp"
+#include "optional.hpp"
+
+#include <cstdint>
+
+namespace file_convert {
+
+void c8_to_c16(const void* buffer, File::Size bytes);
+void c16_to_c8(const void* buffer, File::Size bytes);
+
+} /* namespace file_convert */
+
+class FileConvertReader : public stream::Reader {
+   public:
+    FileConvertReader() = default;
+
+    FileConvertReader(const FileConvertReader&) = delete;
+    FileConvertReader& operator=(const FileConvertReader&) = delete;
+    FileConvertReader(FileConvertReader&& file) = delete;
+    FileConvertReader& operator=(FileConvertReader&&) = delete;
+
+    Optional<File::Error> open(const std::filesystem::path& filename);
+
+    File::Result<File::Size> read(void* const buffer, const File::Size bytes) override;
+    const File& file() const& { return file_; }
+
+    bool convert_c8_to_c16{};
+
+   protected:
+    File file_{};
+    uint64_t bytes_read_{0};
+};
+
+class FileConvertWriter : public stream::Writer {
+   public:
+    FileConvertWriter() = default;
+
+    FileConvertWriter(const FileConvertWriter&) = delete;
+    FileConvertWriter& operator=(const FileConvertWriter&) = delete;
+    FileConvertWriter(FileConvertWriter&& file) = delete;
+    FileConvertWriter& operator=(FileConvertWriter&&) = delete;
+
+    Optional<File::Error> create(const std::filesystem::path& filename);
+
+    File::Result<File::Size> write(const void* const buffer, const File::Size bytes) override;
+    const File& file() const& { return file_; }
+
+    bool convert_c16_to_c8{};
+
+   protected:
+    File file_{};
+    uint64_t bytes_written_{0};
+};

firmware/application/irq_controls.cpp

@@ -22,32 +22,33 @@
 #include "irq_controls.hpp"
 
 #include "ch.h"
-#include "hal.h"
-
+#include "debounce.hpp"
+#include "encoder.hpp"
 #include "event_m0.hpp"
-
+#include "hal.h"
 #include "touch.hpp"
 #include "touch_adc.hpp"
-#include "encoder.hpp"
-#include "debounce.hpp"
 #include "utility.hpp"
 
 #include <cstdint>
 #include <array>
 
 #include "portapack_io.hpp"
-
 #include "hackrf_hal.hpp"
+
 using namespace hackrf::one;
+using namespace portapack;
 
 static Thread* thread_controls_event = NULL;
 
-static std::array<Debounce, 8> switch_debounce;
+// Index with the Switch enum.
+static std::array<Debounce, 6> switch_debounce;
+static std::array<Debounce, 2> encoder_debounce;
+
+static_assert(std::size(switch_debounce) == toUType(Switch::Dfu) + 1);
 
 static Encoder encoder;
-
 static volatile uint32_t encoder_position{0};
-
 static volatile uint32_t touch_phase{0};
 
 /* TODO: Change how touch scanning works. It produces a decent amount of noise
@@ -60,11 +61,11 @@ static volatile uint32_t touch_phase{0};
  * Noise will only occur when the panel is being touched. Not ideal, but
  * an acceptable improvement.
  */
-static std::array<portapack::IO::TouchPinsConfig, 3> touch_pins_configs{
+static std::array<IO::TouchPinsConfig, 3> touch_pins_configs{
     /* State machine will pause here until touch is detected. */
-    portapack::IO::TouchPinsConfig::SensePressure,
-    portapack::IO::TouchPinsConfig::SenseX,
-    portapack::IO::TouchPinsConfig::SenseY,
+    IO::TouchPinsConfig::SensePressure,
+    IO::TouchPinsConfig::SenseX,
+    IO::TouchPinsConfig::SenseY,
 };
 
 static touch::Frame temp_frame;
@@ -80,7 +81,7 @@ static bool touch_update() {
     const auto current_phase = touch_pins_configs[touch_phase];
 
     switch (current_phase) {
-        case portapack::IO::TouchPinsConfig::SensePressure: {
+        case IO::TouchPinsConfig::SensePressure: {
             const auto z1 = samples.xp - samples.xn;
             const auto z2 = samples.yp - samples.yn;
             const auto touch_raw = (z1 > touch::touch_threshold) || (z2 > touch::touch_threshold);
@@ -94,11 +95,11 @@ static bool touch_update() {
             }
         } break;
 
-        case portapack::IO::TouchPinsConfig::SenseX:
+        case IO::TouchPinsConfig::SenseX:
             temp_frame.x += samples;
             break;
 
-        case portapack::IO::TouchPinsConfig::SenseY:
+        case IO::TouchPinsConfig::SenseY:
             temp_frame.y += samples;
             break;
 
@@ -122,25 +123,57 @@ static bool touch_update() {
 
 static uint8_t switches_raw = 0;
 
+/* The raw data is not packed in a way that makes looping over it easy.
+ * One option would be an accessor helper (RawSwitch). Another option
+ * is to swizzle the bits into a friendlier order. */
+// /* Type to access the bits in the raw switch data. */
+// struct RawSwitch {
+//     const uint8_t raw_{0};
+
+// uint8_t right() const { return (raw_ >> 0) & 1; }
+// uint8_t left() const { return (raw_ >> 1) & 1; }
+// uint8_t down() const { return (raw_ >> 2) & 1; }
+// uint8_t up() const { return (raw_ >> 3) & 1; }
+// uint8_t select() const { return (raw_ >> 4) & 1; }
+// uint8_t rot_a() const { return (raw_ >> 5) & 1; }
+// uint8_t rot_b() const { return (raw_ >> 6) & 1; }
+// uint8_t dfu() const { return (raw_ >> 7) & 1; }};
+
+static uint8_t swizzle_raw(uint8_t raw) {
+    return (raw & 0x1F) |         // Keep the bottom 5 bits the same.
+           ((raw >> 2) & 0x20) |  // Shift the DFU bit down to bit 6.
+           ((raw << 1) & 0xC0);   // Shift the encoder bits up to be 7 & 8.
+}
+
 static bool switches_update(const uint8_t raw) {
     // TODO: Only fire event on press, not release?
     bool switch_changed = false;
-    for (size_t i = 0; i < switch_debounce.size(); i++) {
-        switch_changed |= switch_debounce[i].feed((raw >> i) & 1);
+
+    for (size_t i = 0; i < switch_debounce.size(); ++i) {
+        uint8_t bit = (raw >> i) & 0x01;
+        switch_changed |= switch_debounce[i].feed(bit);
     }
 
     return switch_changed;
 }
 
+static bool encoder_update(const uint8_t raw) {
+    bool encoder_changed = false;
+
+    encoder_changed |= encoder_debounce[0].feed((raw >> 6) & 0x01);
+    encoder_changed |= encoder_debounce[1].feed((raw >> 7) & 0x01);
+
+    return encoder_changed;
+}
+
 static bool encoder_read() {
     const auto delta = encoder.update(
-        switch_debounce[5].state(),
-        switch_debounce[6].state());
+        encoder_debounce[0].state(),
+        encoder_debounce[1].state());
 
     if (delta != 0) {
         encoder_position += delta;
         return true;
-        ;
     } else {
         return false;
     }
@@ -149,11 +182,13 @@ static bool encoder_read() {
 void timer0_callback(GPTDriver* const) {
     eventmask_t event_mask = 0;
     if (touch_update()) event_mask |= EVT_MASK_TOUCH;
-    switches_raw = portapack::io.io_update(touch_pins_configs[touch_phase]);
-    if (switches_update(switches_raw)) {
+
+    switches_raw = swizzle_raw(io.io_update(touch_pins_configs[touch_phase]));
+    if (switches_update(switches_raw))
         event_mask |= EVT_MASK_SWITCHES;
-        if (encoder_read()) event_mask |= EVT_MASK_ENCODER;
-    }
+
+    if (encoder_update(switches_raw) && encoder_read())
+        event_mask |= EVT_MASK_ENCODER;
 
     /* Signal event loop */
     if (event_mask) {
@@ -189,37 +224,40 @@ void controls_init() {
     gptStartContinuous(&GPTD1, timer0_match_count);
 
     // Enable repeat for directional switches only
-    for (size_t i = 0; i < 4; i++)
-        switch_debounce[i].enable_repeat();
+    for (auto i = Switch::Right; i <= Switch::Up; incr(i))
+        switch_debounce[toUType(i)].enable_repeat();
 }
 
+// Note: Called by event handler or apps, not in ISR, so some presses might be missed during high CPU utilization
 SwitchesState get_switches_state() {
     SwitchesState result;
 
-    // Right, Left, Down, Up, & Select switches
-    for (size_t i = 0; i < result.size() - 1; i++) {
-        // TODO: Ignore multiple keys at the same time?
+    // TODO: Ignore multiple keys at the same time?
+    for (size_t i = 0; i < result.size(); i++)
         result[i] = switch_debounce[i].state();
-    }
 
-    // Grab Dfu switch from bit 7 and return in bit 5 so that all switches are grouped together in this 6-bit result
-    result[(size_t)Switch::Dfu] = switch_debounce[7].state();
     return result;
 }
 
-// Configure which switches support long press (note those switches will not support Repeat function)
-void switches_long_press_enable(SwitchesState switches_long_press_enabled) {
-    // Right, Left, Down, Up, & Select switches
-    for (size_t i = 0; i < switches_long_press_enabled.size() - 1; i++) {
-        switch_debounce[i].set_long_press_support(switches_long_press_enabled[i]);
-    }
+/* Gets the long press enabled state for all the switches. */
+SwitchesState get_switches_long_press_config() {
+    SwitchesState result;
 
-    // Dfu switch
-    switch_debounce[7].set_long_press_support(switches_long_press_enabled[(size_t)Switch::Dfu]);
+    for (size_t i = 0; i < result.size(); i++)
+        result[i] = switch_debounce[i].get_long_press_enabled();
+
+    return result;
 }
 
-bool switch_long_press_occurred(size_t v) {
-    return (v == (size_t)Switch::Dfu) ? switch_debounce[7].long_press_occurred() : switch_debounce[v].long_press_occurred();
+/* Configures which switches support long press.
+ * NB: those switches will not support Repeat function. */
+void set_switches_long_press_config(SwitchesState switch_config) {
+    for (size_t i = 0; i < switch_config.size(); i++)
+        switch_debounce[i].set_long_press_enabled(switch_config[i]);
+}
+
+bool switch_is_long_pressed(Switch s) {
+    return switch_debounce[toUType(s)].long_press_occurred();
 }
 
 EncoderPosition get_encoder_position() {

firmware/application/irq_controls.hpp

@@ -28,25 +28,28 @@
 #include "touch.hpp"
 
 // Must be same values as in ui::KeyEvent
-enum class Switch {
+// TODO: Why not just reuse one or the other?
+enum class Switch : uint8_t {
     Right = 0,
     Left = 1,
     Down = 2,
     Up = 3,
     Sel = 4,
-    Dfu = 5,
+    Dfu = 5
 };
 
+// Index with the Switch enum.
 using SwitchesState = std::bitset<6>;
-
 using EncoderPosition = uint32_t;
 
 void controls_init();
 SwitchesState get_switches_state();
 EncoderPosition get_encoder_position();
 touch::Frame get_touch_frame();
-void switches_long_press_enable(SwitchesState v);
-bool switch_long_press_occurred(size_t v);
+
+SwitchesState get_switches_long_press_config();
+void set_switches_long_press_config(SwitchesState switch_config);
+bool switch_is_long_pressed(Switch s);
 
 namespace control {
 namespace debug {

firmware/application/radio.cpp

@@ -238,6 +238,7 @@ void set_baseband_filter_bandwidth(const uint32_t bandwidth_minimum) {
 
 void set_baseband_rate(const uint32_t rate) {
     portapack::clock_manager.set_sampling_frequency(rate);
+    // TODO: actually set baseband too?
 }
 
 void set_antenna_bias(const bool on) {

firmware/application/string_format.cpp

@@ -25,16 +25,15 @@
  * and fills it backwards towards the front.
  * The return value 'q' is a pointer to the start.
  * TODO: use std::array for all this. */
+template <typename Int>
 static char* to_string_dec_uint_internal(
     char* p,
-    uint32_t n) {
+    Int n) {
     *p = 0;
     auto q = p;
 
     do {
-        const uint32_t d = n % 10;
-        const char c = d + 48;
-        *(--q) = c;
+        *(--q) = n % 10 + '0';
         n /= 10;
     } while (n != 0);
 
@@ -60,13 +59,36 @@ static char* to_string_dec_uint_pad_internal(
     return q;
 }
 
-char* to_string_dec_uint(const uint32_t n, StringFormatBuffer& buffer, size_t& length) {
+template <typename Int>
+char* to_string_dec_uint_internal(Int n, StringFormatBuffer& buffer, size_t& length) {
     auto end = &buffer.back();
     auto start = to_string_dec_uint_internal(end, n);
     length = end - start;
     return start;
 }
 
+char* to_string_dec_uint(uint32_t n, StringFormatBuffer& buffer, size_t& length) {
+    return to_string_dec_uint_internal(n, buffer, length);
+}
+
+char* to_string_dec_uint64(uint64_t n, StringFormatBuffer& buffer, size_t& length) {
+    return to_string_dec_uint_internal(n, buffer, length);
+}
+
+std::string to_string_dec_uint(uint32_t n) {
+    StringFormatBuffer b{};
+    size_t len{};
+    char* str = to_string_dec_uint(n, b, len);
+    return std::string(str, len);
+}
+
+std::string to_string_dec_uint64(uint64_t n) {
+    StringFormatBuffer b{};
+    size_t len{};
+    char* str = to_string_dec_uint(n, b, len);
+    return std::string(str, len);
+}
+
 std::string to_string_bin(
     const uint32_t n,
     const uint8_t l) {
@@ -89,8 +111,8 @@ std::string to_string_dec_uint(
     auto term = p + sizeof(p) - 1;
     auto q = to_string_dec_uint_pad_internal(term, n, l, fill);
 
-    // TODO: is this needed, seems like pad already does this.
     // Right justify.
+    // (This code is redundant and won't do anything if a fill character was specified)
     while ((term - q) < l) {
         *(--q) = ' ';
     }
@@ -115,6 +137,7 @@ std::string to_string_dec_int(
     }
 
     // Right justify.
+    // (This code is redundant and won't do anything if a fill character was specified)
     while ((term - q) < l) {
         *(--q) = ' ';
     }
@@ -139,13 +162,47 @@ std::string to_string_decimal(float decimal, int8_t precision) {
     return result;
 }
 
+// right-justified frequency in Hz, always 10 characters
 std::string to_string_freq(const uint64_t f) {
-    auto final_str = to_string_dec_int(f / 1000000, 4) + to_string_dec_int(f % 1000000, 6, '0');
+    std::string final_str{""};
+
+    if (f < 1000000)
+        final_str = to_string_dec_int(f, 10, ' ');
+    else
+        final_str = to_string_dec_int(f / 1000000, 4) + to_string_dec_int(f % 1000000, 6, '0');
+
     return final_str;
 }
 
+// right-justified frequency in MHz, rounded to 4 decimal places, always 9 characters
 std::string to_string_short_freq(const uint64_t f) {
-    auto final_str = to_string_dec_int(f / 1000000, 4) + "." + to_string_dec_int((f / 100) % 10000, 4, '0');
+    auto final_str = to_string_dec_int(f / 1000000, 4) + "." + to_string_dec_int(((f + 50) / 100) % 10000, 4, '0');
+    return final_str;
+}
+
+// non-justified non-padded frequency in MHz, rounded to specified number of decimal places
+std::string to_string_rounded_freq(const uint64_t f, int8_t precision) {
+    std::string final_str{""};
+    static constexpr uint32_t pow10[7] = {
+        1,
+        10,
+        100,
+        1000,
+        10000,
+        100000,
+        1000000,
+    };
+
+    if (precision < 1) {
+        final_str = to_string_dec_uint64(f / 1000000);
+    } else {
+        if (precision > 6)
+            precision = 6;
+
+        uint32_t divisor = pow10[6 - precision];
+
+        final_str = to_string_dec_uint64(f / 1000000) + "." + to_string_dec_int(((f + (divisor / 2)) / divisor) % pow10[precision], precision, '0');
+    }
     return final_str;
 }
 
@@ -177,7 +234,7 @@ static void to_string_hex_internal(char* p, const uint64_t n, const int32_t l) {
 std::string to_string_hex(const uint64_t n, int32_t l) {
     char p[32];
 
-    l = std::min(l, 31L);
+    l = std::min<int32_t>(l, 31);
     to_string_hex_internal(p, n, l - 1);
     p[l] = 0;
     return p;
@@ -263,7 +320,7 @@ std::string unit_auto_scale(double n, const uint32_t base_nano, uint32_t precisi
 
     string = to_string_dec_int(integer_part);
     if (precision)
-        string += '.' + to_string_dec_uint(fractional_part, precision);
+        string += '.' + to_string_dec_uint(fractional_part, precision, '0');
 
     if (prefix_index != 3)
         string += unit_prefix[prefix_index];
@@ -285,6 +342,9 @@ static const char* whitespace_str = " \t\r\n";
 
 std::string trim(std::string_view str) {
     auto first = str.find_first_not_of(whitespace_str);
+    if (first == std::string::npos)
+        return {};
+
     auto last = str.find_last_not_of(whitespace_str);
     return std::string{str.substr(first, last - first + 1)};
 }

firmware/application/string_format.hpp

@@ -41,14 +41,18 @@ enum TimeFormat {
 
 const char unit_prefix[7]{'n', 'u', 'm', 0, 'k', 'M', 'G'};
 
-using StringFormatBuffer = std::array<char, 16>;
+using StringFormatBuffer = std::array<char, 24>;
 
-/* uint32_t conversion without memory allocations. */
-char* to_string_dec_uint(const uint32_t n, StringFormatBuffer& buffer, size_t& length);
+/* uint conversion without memory allocations. */
+char* to_string_dec_uint(uint32_t n, StringFormatBuffer& buffer, size_t& length);
+char* to_string_dec_uint64(uint64_t n, StringFormatBuffer& buffer, size_t& length);
+
+std::string to_string_dec_uint(uint32_t n);
+std::string to_string_dec_uint64(uint64_t n);
 
 // TODO: Allow l=0 to not fill/justify? Already using this way in ui_spectrum.hpp...
 std::string to_string_bin(const uint32_t n, const uint8_t l = 0);
-std::string to_string_dec_uint(const uint32_t n, const int32_t l = 0, const char fill = ' ');
+std::string to_string_dec_uint(const uint32_t n, const int32_t l, const char fill = ' ');
 std::string to_string_dec_int(const int32_t n, const int32_t l = 0, const char fill = 0);
 std::string to_string_decimal(float decimal, int8_t precision);
 
@@ -57,6 +61,7 @@ std::string to_string_hex_array(uint8_t* const array, const int32_t l = 0);
 
 std::string to_string_freq(const uint64_t f);
 std::string to_string_short_freq(const uint64_t f);
+std::string to_string_rounded_freq(const uint64_t f, int8_t precision);
 std::string to_string_time_ms(const uint32_t ms);
 
 std::string to_string_datetime(const rtc::RTC& value, const TimeFormat format = YMDHMS);

firmware/application/tone_key.cpp

@@ -88,25 +88,6 @@ std::string fx100_string(uint32_t f) {
     return to_string_dec_uint(f / 100) + "." + to_string_dec_uint((f / 10) % 10);
 }
 
-void tone_keys_populate(OptionsField& field) {
-    using option_t = std::pair<std::string, int32_t>;
-    using options_t = std::vector<option_t>;
-    options_t tone_key_options;
-    std::string tone_name;
-
-    for (size_t c = 0; c < tone_keys.size(); c++) {
-        auto f = tone_keys[c].second;
-        if ((c != 0) && (f < 1000 * 100))
-            tone_name = "CTCSS " + fx100_string(f) + " #" + tone_keys[c].first;
-        else
-            tone_name = tone_keys[c].first;
-
-        tone_key_options.emplace_back(tone_name, c);
-    }
-
-    field.set_options(tone_key_options);
-}
-
 float tone_key_frequency(tone_index index) {
     return float(tone_keys[index].second) / 100.0;
 }
@@ -169,7 +150,7 @@ std::string tone_key_string_by_value(uint32_t value, size_t max_length) {
 // Value is in 0.01 Hz units
 tone_index tone_key_index_by_value(uint32_t value) {
     uint32_t diff;
-    uint32_t min_diff{value * 2};
+    uint32_t min_diff{UINT32_MAX};
     tone_index min_idx{-1};
     tone_index idx;
 
@@ -196,7 +177,7 @@ tone_index tone_key_index_by_string(char* str) {
     if (!str)
         return -1;
     for (tone_index index = 0; (unsigned)index < tone_keys.size(); index++) {
-        if (tone_keys[index].first.compare(str) >= 0)
+        if (tone_keys[index].first.compare(str) >= 0)  // TODO: why >=?
             return index;
     }
     return -1;

firmware/application/tone_key.hpp

@@ -23,10 +23,9 @@
 #ifndef __TONE_KEY_H_
 #define __TONE_KEY_H_
 
-#include "ui.hpp"
-#include "ui_widget.hpp"
-
-using namespace ui;
+#include <cstdint>
+#include <string>
+#include <vector>
 
 namespace tonekey {
 
@@ -34,15 +33,14 @@ namespace tonekey {
 #define TONE_DISPLAY_TOGGLE_COUNTER 3
 #define F2Ix100(x) (int32_t)(x * 100.0)
 
-typedef int32_t tone_index;
-
+using tone_index = int32_t;
 using tone_key_t = std::vector<std::pair<std::string, uint32_t>>;
 
 extern const tone_key_t tone_keys;
 
-void tone_keys_populate(OptionsField& field);
 float tone_key_frequency(tone_index index);
 
+std::string fx100_string(uint32_t f);
 std::string tone_key_string(tone_index index);
 std::string tone_key_value_string(tone_index index);
 std::string tone_key_string_by_value(uint32_t value, size_t max_length);

firmware/application/ui/ui_alphanum.cpp

@@ -22,11 +22,10 @@
 
 #include "ui_alphanum.hpp"
 
-#include "portapack.hpp"
 #include "hackrf_hal.hpp"
+#include "portapack.hpp"
 #include "portapack_shared_memory.hpp"
-
-#include <algorithm>
+#include "utility.hpp"
 
 namespace ui {
 
@@ -38,6 +37,7 @@ AlphanumView::AlphanumView(
     size_t n;
 
     add_children({
+        &button_shift,
         &labels,
         &field_raw,
         &text_raw_to_char,
@@ -49,6 +49,19 @@ AlphanumView::AlphanumView(
         this->on_button(button);
     };
 
+    button_shift.set_vertical_center(true);
+    button_shift.on_select = [this]() {
+        incr(shift_mode);
+
+        // Disallow one-time shift in digits/symbols mode
+        if ((mode == 1) && (shift_mode == ShiftMode::Shift))
+            shift_mode = ShiftMode::ShiftLock;
+        else if (shift_mode > ShiftMode::ShiftLock)
+            shift_mode = ShiftMode::None;
+
+        refresh_keys();
+    };
+
     n = 0;
     for (auto& button : buttons) {
         button.id = n;
@@ -56,9 +69,9 @@ AlphanumView::AlphanumView(
             focused_button = button.id;
         };
         button.on_select = button_fn;
-        button.set_parent_rect({static_cast<Coord>((n % 5) * (240 / 5)),
+        button.set_parent_rect({static_cast<Coord>((n % 5) * (screen_width / 5)),
                                 static_cast<Coord>((n / 5) * 38 + 24),
-                                240 / 5, 38});
+                                screen_width / 5, 38});
         add_child(&button);
         n++;
     }
@@ -78,38 +91,59 @@ AlphanumView::AlphanumView(
         char_add(field_raw.value());
     };
 
-    // make text_raw_to_char widget display the char value from field_raw
     field_raw.on_change = [this](auto) {
         text_raw_to_char.set(std::string{static_cast<char>(field_raw.value())});
     };
 }
 
-void AlphanumView::set_mode(const uint32_t new_mode) {
-    size_t n = 0;
-
-    if (new_mode < 3)
+void AlphanumView::set_mode(uint32_t new_mode, ShiftMode new_shift_mode) {
+    if (new_mode < std::size(key_sets))
         mode = new_mode;
     else
         mode = 0;
 
-    const char* key_list = key_sets[mode].second;
+    shift_mode = new_shift_mode;
+    refresh_keys();
 
+    if (mode + 1 < std::size(key_sets))
+        button_mode.set_text(key_sets[mode + 1].name);
+    else
+        button_mode.set_text(key_sets[0].name);
+}
+
+void AlphanumView::refresh_keys() {
+    auto key_list = shift_mode == ShiftMode::None
+                        ? key_sets[mode].normal
+                        : key_sets[mode].shifted;
+
+    size_t n = 0;
     for (auto& button : buttons) {
-        const std::string label{
-            key_list[n]};
-        button.set_text(label);
+        button.set_text(std::string{key_list[n]});
         n++;
     }
 
-    if (mode < 2)
-        button_mode.set_text(key_sets[mode + 1].first);
-    else
-        button_mode.set_text(key_sets[0].first);
+    switch (shift_mode) {
+        case ShiftMode::None:
+            button_shift.set_color(Color::dark_grey());
+            break;
+        case ShiftMode::Shift:
+            button_shift.set_color(Color::black());
+            break;
+        case ShiftMode::ShiftLock:
+            button_shift.set_color(Color::dark_blue());
+            break;
+    }
 }
 
 void AlphanumView::on_button(Button& button) {
     const auto c = button.text()[0];
     char_add(c);
+
+    // TODO: Consolidate shift handling.
+    if (shift_mode == ShiftMode::Shift) {
+        shift_mode = ShiftMode::None;
+        refresh_keys();
+    }
 }
 
 bool AlphanumView::on_encoder(const EncoderEvent delta) {

firmware/application/ui/ui_alphanum.hpp

@@ -29,6 +29,10 @@
 #include "ui_textentry.hpp"
 #include "ui_menu.hpp"
 
+// TODO: Building this as a custom widget instead of using
+// all the Button controls would save a considerable amount of RAM.
+// The Buttons each have a backing string but these only need one char.
+
 namespace ui {
 
 class AlphanumView : public TextEntryView {
@@ -43,22 +47,42 @@ class AlphanumView : public TextEntryView {
     bool on_encoder(const EncoderEvent delta) override;
 
    private:
-    const char* const keys_upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ, ._";
-    const char* const keys_lower = "abcdefghijklmnopqrstuvwxyz, ._";
-    const char* const keys_digit = "0123456789!\"#'()*+-/:;=<>@[\\]?";
+    enum class ShiftMode : uint8_t {
+        None,
+        Shift,
+        ShiftLock,
+    };
 
-    const std::pair<std::string, const char*> key_sets[3] = {
-        {"ABC", keys_upper},
-        {"abc", keys_lower},
-        {"123", keys_digit}};
+    const char* const keys_lower = "abcdefghijklmnopqrstuvwxyz, .";
+    const char* const keys_upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ, .";
+    const char* const keys_digit = "1234567890()'`\"+-*/=<>_\\!?, .";
+    const char* const keys_symbl = "!@#$%^&*()[]'`\"{}|:;<>-_~?, .";
+
+    struct key_set_t {
+        const char* name;
+        const char* normal;
+        const char* shifted;
+    };
+
+    const key_set_t key_sets[2] = {
+        {"abc", keys_lower, keys_upper},
+        {"123", keys_digit, keys_symbl}};
 
     int16_t focused_button = 0;
-    uint32_t mode = 0;  // Uppercase
+    uint32_t mode = 0;  // Letters.
+    ShiftMode shift_mode = ShiftMode::None;
 
-    void set_mode(const uint32_t new_mode);
+    void set_mode(uint32_t new_mode, ShiftMode new_shift_mode = ShiftMode::None);
+    void refresh_keys();
     void on_button(Button& button);
 
-    std::array<Button, 30> buttons{};
+    std::array<Button, 29> buttons{};
+
+    NewButton button_shift{
+        {192, 214, screen_width / 5, 38},
+        {},
+        &bitmap_icon_shift,
+        Color::dark_grey()};
 
     Labels labels{
         {{1 * 8, 33 * 8}, "Raw:", Color::light_grey()},
@@ -76,11 +100,11 @@ class AlphanumView : public TextEntryView {
         "0"};
 
     Button button_delete{
-        {9 * 8, 33 * 8, 6 * 8, 32},
+        {9 * 8, 32 * 8 - 3, 7 * 8, 3 * 16 + 3},
         "<DEL"};
 
     Button button_mode{
-        {16 * 8, 33 * 8, 5 * 8, 32},
+        {16 * 8, 32 * 8 - 3, 6 * 8, 3 * 16 + 3},
         ""};
 };
 

firmware/application/ui/ui_freqlist.cpp

@@ -1,5 +1,7 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -24,154 +26,147 @@
 #include "baseband_api.hpp"
 #include "utility.hpp"
 
-#include <algorithm>
-
 namespace ui {
-FreqManUIList::FreqManUIList(
-    Rect parent_rect,
-    bool instant_exec)
+
+FreqManUIList::FreqManUIList(Rect parent_rect)
     : Widget{parent_rect},
-      instant_exec_{instant_exec} {
+      visible_lines_{(unsigned)parent_rect.height() / char_height} {
     this->set_focusable(true);
 }
 
-void FreqManUIList::set_highlighted_index(int index) {
-    if (freqlist_db == nullptr || (unsigned)(current_index + index) >= freqlist_db->size())
-        return;
-    if (index < 0) {
-        index = 0;
-        if (current_index > 0)
-            current_index--;
-    }
-    if (index >= freqlist_nb_lines) {
-        index = freqlist_nb_lines - 1;
-        if ((unsigned)(current_index + index) < freqlist_db->size())
-            current_index++;
-        else
-            current_index = freqlist_db->size() - freqlist_nb_lines - 1;
-    }
-    highlighted_index = index;
-}
-
-uint8_t FreqManUIList::get_index() {
-    return current_index + highlighted_index;
-}
-
 void FreqManUIList::paint(Painter& painter) {
-    freqlist_nb_lines = 0;
-    const auto r = screen_rect();
-    uint8_t focused = has_focus();
-    const Rect r_widget_screen{r.left() + focused, r.top() + focused, r.width() - 2 * focused, r.height() - 2 * +focused};
-    painter.fill_rectangle(
-        r_widget_screen,
-        Color::black());
-    // only return after clearing the screen so previous entries are not shown anymore
-    if (freqlist_db == nullptr || freqlist_db->size() == 0)
+    auto rect = screen_rect();
+
+    if (!db_ || db_->empty()) {
+        auto line_position = rect.location() + Point{7 * 8, 6 * 16};
+        painter.fill_rectangle(rect, Color::black());
+        painter.draw_string(line_position, Styles::white, "Empty Category");
         return;
-    // coloration if file is too big
-    auto text_color = &Styles::white;
-    if (freqlist_db->size() > FREQMAN_MAX_PER_FILE)
-        text_color = &Styles::yellow;
-    uint8_t nb_lines = 0;
-    for (uint8_t it = current_index; it < freqlist_db->size(); it++) {
-        uint8_t line_height = (int)nb_lines * char_height;
-        if (line_height < (r.height() - char_height)) {  // line is within the widget
-            std::string description = freqman_item_string(freqlist_db->at(it), 30);
-            if (nb_lines == highlighted_index) {
-                const Rect r_highlighted_freq{0, r.location().y() + (int)nb_lines * char_height, 240, char_height};
-                painter.fill_rectangle(
-                    r_highlighted_freq,
-                    Color::white());
-                painter.draw_string(
-                    {0, r.location().y() + (int)nb_lines * char_height},
-                    Styles::bg_white, description);
-            } else {
-                painter.draw_string(
-                    {0, r.location().y() + (int)nb_lines * char_height},
-                    *text_color, description);
-            }
+    }
 
-            nb_lines++;
-        } else {
-            // rect is filled, we can break
-            break;
-        }
-    }
-    freqlist_nb_lines = nb_lines;
-    if (has_focus() || highlighted()) {
-        const Rect r_focus{r.left(), r.top(), r.width(), r.height()};
-        painter.draw_rectangle(
-            r_focus,
-            Color::white());
-    }
-}
+    // Indicate when a file is too large by drawing in yellow.
+    auto over_max = db_->entry_count() > freqman_default_max_entries;
+    auto base_style = over_max ? &Styles::yellow : &Styles::white;
 
-void FreqManUIList::set_db(freqman_db& db) {
-    freqlist_db = &db;
-    if (db.size() == 0) {
-        current_index = 0;
-        highlighted_index = 0;
-    } else {
-        if ((unsigned)(current_index + highlighted_index) >= db.size()) {
-            current_index = db.size() - 1 - highlighted_index;
-        }
-        if (current_index < 0) {
-            current_index = 0;
-            if (highlighted_index > 0)
-                highlighted_index--;
+    // TODO: could minimize redraw/re-read if necessary
+    //       with better change tracking.
+    for (auto offset = 0u; offset < visible_lines_; ++offset) {
+        // The whole frame needs to be cleared so every line 'slot'
+        // is redrawn even when `text` just left empty.
+        auto text = std::string{};
+        auto index = start_index_ + offset;
+        auto line_position = rect.location() + Point{4, 1 + (int)offset * char_height};
+        auto is_selected = offset == selected_index_;
+        auto style = base_style;
+
+        if (index < db_->entry_count()) {
+            auto entry = (*db_)[index];
+            // db_ is directly backed by a file, so invalid lines cannot be
+            // pre-filtered. Show an empty entry if 'Unknown'.
+            if (entry.type != freqman_type::Unknown)
+                text = pretty_string(entry, line_max_length);
+
+            // Otherwise, if 'Raw' indicate an invalid entry by color.
+            if (entry.type == freqman_type::Raw)
+                style = &Styles::light_grey;
         }
+
+        // Pad right with ' ' so trailing chars are cleaned up.
+        // draw_glyph has less flicker than fill_rect when drawing.
+        if (text.length() < line_max_length)
+            text.resize(line_max_length, ' ');
+
+        painter.draw_string(
+            line_position, (is_selected ? style->invert() : *style), text);
     }
+
+    // Draw a bounding rectangle when focused.
+    painter.draw_rectangle(rect, (has_focus() ? Color::white() : Color::black()));
 }
 
 void FreqManUIList::on_focus() {
-    if (on_highlight)
-        on_highlight(*this);
+    set_dirty();
+}
+
+void FreqManUIList::on_blur() {
+    set_dirty();
 }
 
 bool FreqManUIList::on_key(const KeyEvent key) {
-    if (key == KeyEvent::Select) {
-        if (on_select) {
-            on_select(*this);
-            return true;
-        }
-    } else {
-        if (on_dir) {
-            return on_dir(*this, key);
-        }
-    }
-    return false;
-}
+    if (!db_ || db_->empty())
+        return false;
 
-bool FreqManUIList::on_touch(const TouchEvent event) {
-    switch (event.type) {
-        case TouchEvent::Type::Start:
-            set_highlighted(true);
-            set_dirty();
-            if (on_touch_press) {
-                on_touch_press(*this);
-            }
-            if (on_select && instant_exec_) {
-                on_select(*this);
-            }
-            return true;
-        case TouchEvent::Type::End:
-            set_highlighted(false);
-            set_dirty();
-            if (on_touch_release) {
-                on_touch_release(*this);
-            }
-            if (on_select && !instant_exec_) {
-                on_select(*this);
-            }
-            return true;
-        default:
-            return false;
+    if (key == KeyEvent::Select && on_select) {
+        on_select(get_index());
+        return true;
+    } else if (key == KeyEvent::Right && on_leave) {
+        on_leave();
+        return true;
     }
-}
 
-bool FreqManUIList::on_encoder(EncoderEvent delta) {
-    set_highlighted_index((int)highlighted_index + delta);
+    auto delta = 0;
+    if (key == KeyEvent::Up && get_index() > 0)
+        delta = -1;
+    else if (key == KeyEvent::Down && get_index() < db_->entry_count() - 1)
+        delta = 1;
+    else
+        return false;
+
+    adjust_selected_index(delta);
     set_dirty();
     return true;
 }
+
+bool FreqManUIList::on_encoder(EncoderEvent delta) {
+    if (!db_ || db_->empty())
+        return false;
+
+    adjust_selected_index(delta);
+    set_dirty();
+    return true;
+}
+
+void FreqManUIList::set_parent_rect(Rect new_parent_rect) {
+    visible_lines_ = new_parent_rect.height() / char_height;
+    Widget::set_parent_rect(new_parent_rect);
+}
+
+void FreqManUIList::set_index(size_t index) {
+    start_index_ = 0;
+    selected_index_ = 0;
+    adjust_selected_index(index);
+}
+
+size_t FreqManUIList::get_index() const {
+    return start_index_ + selected_index_;
+}
+
+void FreqManUIList::set_db(FreqmanDB& db) {
+    db_ = &db;
+    start_index_ = 0;
+    selected_index_ = 0;
+    set_dirty();
+}
+
+void FreqManUIList::adjust_selected_index(int delta) {
+    int32_t new_index = selected_index_ + delta;
+
+    // The selection went off the top of the screen, move up.
+    if (new_index < 0) {
+        start_index_ = std::max<int32_t>(start_index_ + new_index, 0);
+        selected_index_ = 0;
+    }
+
+    // Selection is off the bottom of the screen, move down.
+    else if (new_index >= (int32_t)visible_lines_) {
+        start_index_ = std::min<int32_t>(start_index_ + delta, db_->entry_count() - visible_lines_);
+        selected_index_ = visible_lines_ - 1;
+    }
+
+    // Otherwise, scroll within the screen, but not past the end.
+    else {
+        selected_index_ = std::min<int32_t>(new_index, db_->entry_count() - 1);
+    }
+}
+
 } /* namespace ui */

firmware/application/ui/ui_freqlist.hpp

@@ -1,5 +1,7 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2023 gullradriel, Nilorea Studio Inc.
+ * Copyright (C) 2023 Kyle Reed
  *
  * This file is part of PortaPack.
  *
@@ -23,53 +25,48 @@
 #define __UI_FREQLIST_H__
 
 #include "ui.hpp"
-#include "ui_widget.hpp"
 #include "ui_painter.hpp"
 #include "ui_styles.hpp"
+#include "ui_widget.hpp"
 #include "event_m0.hpp"
-#include "message.hpp"
 #include "freqman.hpp"
+#include "freqman_db.hpp"
+#include "message.hpp"
 #include <cstdint>
 
 namespace ui {
 
 class FreqManUIList : public Widget {
    public:
-    std::function<void(FreqManUIList&)> on_select{};
-    std::function<void(FreqManUIList&)> on_touch_release{};  // Executed when releasing touch, after on_select.
-    std::function<void(FreqManUIList&)> on_touch_press{};    // Executed when touching, before on_select.
-    std::function<bool(FreqManUIList&, KeyEvent)> on_dir{};
-    std::function<void(FreqManUIList&)> on_highlight{};
+    std::function<void(size_t)> on_select{};
+    std::function<void()> on_leave{};  // Called when Right is pressed.
 
-    FreqManUIList(Rect parent_rect, bool instant_exec);  // instant_exec: Execute on_select when you touching instead of releasing
-    FreqManUIList(
-        Rect parent_rect)
-        : FreqManUIList{parent_rect, false} {
-    }
-    FreqManUIList()
-        : FreqManUIList{{}, {}} {
-    }
+    FreqManUIList(Rect parent_rect);
     FreqManUIList(const FreqManUIList& other) = delete;
     FreqManUIList& operator=(const FreqManUIList& other) = delete;
 
     void paint(Painter& painter) override;
     void on_focus() override;
+    void on_blur() override;
     bool on_key(const KeyEvent key) override;
-    bool on_touch(const TouchEvent event) override;
     bool on_encoder(EncoderEvent delta) override;
+    void set_parent_rect(Rect new_parent_rect) override;
 
-    void set_highlighted_index(int index);  // internal set highlighted_index in list handler
-    uint8_t get_index();                    // return highlighed + index
-    uint8_t set_index(uint8_t index);       // try to set current_index + highlighed from index, return capped index
-    void set_db(freqman_db& db);
+    void set_index(size_t index);
+    size_t get_index() const;
+    void set_db(FreqmanDB& db);
 
    private:
+    void adjust_selected_index(int index);
+
     static constexpr int8_t char_height = 16;
-    bool instant_exec_{false};
-    freqman_db* freqlist_db{nullptr};
-    int current_index{0};
-    int highlighted_index{0};
-    int freqlist_nb_lines{0};
+    static constexpr int8_t char_width = 8;
+    static constexpr int8_t line_max_length = 29;
+    size_t visible_lines_{0};
+
+    FreqmanDB* db_{nullptr};
+    size_t start_index_{0};
+    size_t selected_index_{0};
 };
 
 }  // namespace ui

firmware/application/ui/ui_geomap.cpp

@@ -32,6 +32,7 @@ using namespace portapack;
 #include "string_format.hpp"
 #include "complex.hpp"
 #include "ui_styles.hpp"
+#include "ui_font_fixed_5x8.hpp"
 
 namespace ui {
 
@@ -243,6 +244,7 @@ void GeoMap::paint(Painter& painter) {
 
         // Draw the other markers
         draw_markers(painter);
+        draw_scale(painter);
         markerListUpdated = false;
         set_clean();
     }
@@ -283,6 +285,10 @@ void GeoMap::move(const float lon, const float lat) {
         x_pos = map_width - map_rect.width();
     if (y_pos > (map_height + map_rect.height()))
         y_pos = map_height - map_rect.height();
+
+    // Scale calculation
+    float km_per_deg_lon = cos(lat * pi / 180) * 111.321;  // 111.321 km/deg longitude at equator, and 0 km at poles
+    pixels_per_km = (map_rect.width() / 2) / km_per_deg_lon;
 }
 
 bool GeoMap::init() {
@@ -318,6 +324,24 @@ bool GeoMap::manual_panning() {
     return manual_panning_;
 }
 
+void GeoMap::draw_scale(Painter& painter) {
+    uint16_t km = 100;
+    uint16_t scale_width = km * pixels_per_km * map_zoom;
+
+    while (scale_width > screen_width / 2) {
+        scale_width /= 2;
+        km /= 2;
+    }
+
+    std::string km_string = to_string_dec_uint(km) + " km";
+
+    display.fill_rectangle({{screen_width - 5 - scale_width, screen_height - 4}, {scale_width, 2}}, Color::black());
+    display.fill_rectangle({{screen_width - 5, screen_height - 8}, {2, 6}}, Color::black());
+    display.fill_rectangle({{screen_width - 5 - scale_width, screen_height - 8}, {2, 6}}, Color::black());
+
+    painter.draw_string({(uint16_t)(screen_width - 25 - scale_width - km_string.length() * 5 / 2), screen_height - 10}, ui::font::fixed_5x8, Color::black(), Color::white(), km_string);
+}
+
 void GeoMap::draw_bearing(const Point origin, const uint16_t angle, uint32_t size, const Color color) {
     Point arrow_a, arrow_b, arrow_c;
 

firmware/application/ui/ui_geomap.hpp

@@ -84,8 +84,8 @@ class GeoPos : public View {
 
     Labels labels_position{
         {{1 * 8, 0 * 16}, "Alt:", Color::light_grey()},
-        {{1 * 8, 1 * 16}, "Lat:    *  '  \"", Color::light_grey()},  // No ° symbol in 8x16 font
-        {{1 * 8, 2 * 16}, "Lon:    *  '  \"", Color::light_grey()},
+        {{1 * 8, 1 * 16}, "Lat:    \xB0  '  \"", Color::light_grey()},  // 0xB0 is degree ° symbol in our 8x16 font
+        {{1 * 8, 2 * 16}, "Lon:    \xB0  '  \"", Color::light_grey()},
     };
 
     NumberField field_altitude{
@@ -179,6 +179,7 @@ class GeoMap : public Widget {
     MapMarkerStored store_marker(GeoMarker& marker);
 
    private:
+    void draw_scale(Painter& painter);
     void draw_bearing(const Point origin, const uint16_t angle, uint32_t size, const Color color);
     void draw_marker(Painter& painter, const ui::Point itemPoint, const uint16_t itemAngle, const std::string itemTag, const Color color = Color::red(), const Color fontColor = Color::white(), const Color backColor = Color::black());
     void draw_markers(Painter& painter);
@@ -199,6 +200,7 @@ class GeoMap : public Widget {
     int32_t prev_x_pos{0xFFFF}, prev_y_pos{0xFFFF};
     float lat_{};
     float lon_{};
+    float pixels_per_km{};
     uint16_t angle_{};
     std::string tag_{};
 

firmware/application/ui/ui_receiver.cpp

@@ -20,16 +20,15 @@
  * Boston, MA 02110-1301, USA.
  */
 
+#include "irq_controls.hpp"
+#include "max283x.hpp"
+#include "portapack.hpp"
+#include "string_format.hpp"
 #include "ui_receiver.hpp"
 #include "ui_freqman.hpp"
 
-#include "portapack.hpp"
 using namespace portapack;
 
-#include "string_format.hpp"
-
-#include "max283x.hpp"
-
 namespace ui {
 
 /* FrequencyField ********************************************************/
@@ -38,15 +37,26 @@ FrequencyField::FrequencyField(
     const Point parent_pos)
     : Widget{{parent_pos, {8 * 10, 16}}},
       length_{11},
-      range(rf::tuning_range) {
+      range_{rf::tuning_range} {
+    initial_switch_config_ = get_switches_long_press_config();
     set_focusable(true);
 }
 
+FrequencyField::~FrequencyField() {
+    reset_switch_config();
+}
+
 rf::Frequency FrequencyField::value() const {
     return value_;
 }
 
 void FrequencyField::set_value(rf::Frequency new_value) {
+    // While in digit mode, don't update if the value is
+    // out of range. That way going out of range doesn't
+    // cause all the other digits to reset.
+    if (digit_mode_ && !range_.contains_inc(new_value))
+        return;
+
     new_value = clamp_value(new_value);
 
     if (new_value != value_) {
@@ -59,48 +69,98 @@ void FrequencyField::set_value(rf::Frequency new_value) {
 }
 
 void FrequencyField::set_step(rf::Frequency new_value) {
-    step = new_value;
     // TODO: Quantize current frequency to a step of the new size?
+    step_ = new_value;
+}
+
+void FrequencyField::set_allow_digit_mode(bool allowed) {
+    allow_digit_mode_ = allowed;
+
+    if (!allowed && digit_mode_) {
+        digit_mode_ = false;
+        reset_switch_config();
+        set_dirty();
+    }
 }
 
 void FrequencyField::paint(Painter& painter) {
-    const std::string str_value = to_string_short_freq(value_);
-
+    const auto str_value = to_string_short_freq(value_);
     const auto paint_style = has_focus() ? style().invert() : style();
 
     painter.draw_string(
         screen_pos(),
         paint_style,
         str_value);
+
+    // Highlight current digit in digit_mode.
+    if (digit_mode_) {
+        auto p = screen_pos();
+        p += {digit_ * char_width, 0};
+        painter.draw_char(p, Styles::bg_blue, str_value[digit_]);
+    }
 }
 
-bool FrequencyField::on_key(const ui::KeyEvent event) {
-    if (event == ui::KeyEvent::Select) {
+bool FrequencyField::on_key(KeyEvent event) {
+    if (event == KeyEvent::Select) {
+        // Toggle 'digit' mode with long-press.
+        if (digit_mode_ || key_is_long_pressed(event)) {
+            digit_mode_ = !digit_mode_;
+            set_dirty();
+            return true;
+        }
+
         if (on_edit) {
             on_edit();
             return true;
         }
     }
+
+    if (digit_mode_) {
+        constexpr uint8_t decimal_pos = 4;
+        int8_t delta = 0;
+
+        switch (event) {
+            case KeyEvent::Up:
+                set_value(value_ + digit_step());
+                break;
+            case KeyEvent::Down:
+                set_value(value_ - digit_step());
+                break;
+            case KeyEvent::Left:
+                delta = -1;
+                break;
+            case KeyEvent::Right:
+                delta = 1;
+                break;
+            default:
+                return false;
+        }
+
+        if (delta != 0) {
+            digit_ += delta;
+
+            // If on decimal, skip it.
+            if (digit_ == decimal_pos)
+                digit_ += delta;
+            // Otherwise ensure in bounds.
+            else
+                digit_ = clip<int8_t>(digit_, 0, 8);
+
+            set_dirty();
+        }
+
+        return true;
+    }
+
     return false;
 }
 
 bool FrequencyField::on_encoder(const EncoderEvent delta) {
-    if (step == 0) {  // 'Auto' mode.'
-        auto ms = RTT2MS(halGetCounterValue());
-        auto delta_ms = last_ms_ <= ms ? ms - last_ms_ : ms;
-        last_ms_ = ms;
+    if (digit_mode_)
+        set_value(value_ + (delta * digit_step()));
+    else
+        set_value(value_ + (delta * step_));
 
-        // The goal is to map 'scale' to a range of about 10 to 10M.
-        // The faster the encoder is rotated, the larger the step.
-        // Linear doesn't feel right. Hyperbolic felt better.
-        // To get these magic numbers, I graphed the function until the
-        // curve shape seemed about right then tested on device.
-        delta_ms = std::min(145ull, delta_ms) + 5;  // Prevent DIV/0
-        int64_t scale = 200'000'000 / (0.001'55 * pow(delta_ms, 5.45)) + 8;
-        set_value(value() + (delta * scale));
-    } else {
-        set_value(value() + (delta * step));
-    }
     return true;
 }
 
@@ -112,13 +172,49 @@ bool FrequencyField::on_touch(const TouchEvent event) {
 }
 
 void FrequencyField::on_focus() {
-    if (on_show_options) {
+    if (on_show_options)
         on_show_options();
-    }
+
+    enable_switch_config();
+}
+
+void FrequencyField::on_blur() {
+    reset_switch_config();
+}
+
+rf::Frequency FrequencyField::digit_step() const {
+    constexpr rf::Frequency steps[] = {
+        1'000'000'000,
+        100'000'000,
+        10'000'000,
+        1'000'000,
+        0,  // Decimal point position.
+        100'000,
+        10'000,
+        1'000,
+        100,
+    };
+
+    return digit_ < std::size(steps) ? steps[digit_] : 0;
 }
 
 rf::Frequency FrequencyField::clamp_value(rf::Frequency value) {
-    return range.clip(value);
+    return range_.clip(value);
+}
+
+void FrequencyField::enable_switch_config() {
+    // Don't enable long press testing when not allowed.
+    if (!allow_digit_mode_)
+        return;
+
+    // Enable long press on "Select".
+    SwitchesState config;
+    config[toUType(Switch::Sel)] = true;
+    set_switches_long_press_config(config);
+}
+
+void FrequencyField::reset_switch_config() {
+    set_switches_long_press_config(initial_switch_config_);
 }
 
 /* FrequencyKeypadView ***************************************************/

firmware/application/ui/ui_receiver.hpp

@@ -27,6 +27,7 @@
 #include "ui_painter.hpp"
 #include "ui_widget.hpp"
 
+#include "irq_controls.hpp"
 #include "rf_path.hpp"
 
 #include <cstddef>
@@ -45,27 +46,41 @@ class FrequencyField : public Widget {
     using range_t = rf::FrequencyRange;
 
     FrequencyField(Point parent_pos);
+    ~FrequencyField();
 
     rf::Frequency value() const;
 
     void set_value(rf::Frequency new_value);
     void set_step(rf::Frequency new_value);
+    void set_allow_digit_mode(bool allowed);
 
     void paint(Painter& painter) override;
 
-    bool on_key(ui::KeyEvent event) override;
+    bool on_key(KeyEvent event) override;
     bool on_encoder(EncoderEvent delta) override;
     bool on_touch(TouchEvent event) override;
     void on_focus() override;
+    void on_blur() override;
 
    private:
     const size_t length_;
-    const range_t range;
+    const range_t range_;
+
     rf::Frequency value_{0};
-    rf::Frequency step{25000};
+    rf::Frequency step_{25000};
     uint64_t last_ms_{0};
 
+    uint8_t digit_{3};
+    bool digit_mode_{false};
+    bool allow_digit_mode_{true};
+    SwitchesState initial_switch_config_{};
+
+    /* Gets the step value for the given digit when in digit_mode. */
+    rf::Frequency digit_step() const;
     rf::Frequency clamp_value(rf::Frequency value);
+
+    void enable_switch_config();
+    void reset_switch_config();
 };
 
 template <size_t N>
@@ -242,7 +257,6 @@ class FrequencyStepView : public OptionsField {
               parent_pos,
               5,
               {
-                  {" Auto", 0},  /* Faster == larger step. */
                   {"   10", 10}, /* Fine tuning SSB voice pitch,in HF and QO-100 sat #669 */
                   {"   50", 50}, /* added 50Hz/10Hz,but we do not increase GUI digit decimal */
                   {"  100", 100},

firmware/application/ui/ui_spectrum.cpp

@@ -308,13 +308,25 @@ WaterfallView::WaterfallView(const bool cursor) {
 }
 
 void WaterfallView::on_show() {
-    // TODO: Assert that baseband is not shutdown.
-    baseband::spectrum_streaming_start();
+    start();
 }
 
 void WaterfallView::on_hide() {
-    // TODO: Assert that baseband is not shutdown.
-    baseband::spectrum_streaming_stop();
+    stop();
+}
+
+void WaterfallView::start() {
+    if (!running_) {
+        baseband::spectrum_streaming_start();
+        running_ = true;
+    }
+}
+
+void WaterfallView::stop() {
+    if (running_) {
+        baseband::spectrum_streaming_stop();
+        running_ = false;
+    }
 }
 
 void WaterfallView::show_audio_spectrum_view(const bool show) {

firmware/application/ui/ui_spectrum.hpp

@@ -131,11 +131,14 @@ class WaterfallView : public View {
     WaterfallView& operator=(const WaterfallView&) = delete;
     WaterfallView& operator=(WaterfallView&&) = delete;
 
+    // TODO: remove these, use start/stop directly instead.
     void on_show() override;
     void on_hide() override;
 
-    void set_parent_rect(const Rect new_parent_rect) override;
+    void start();
+    void stop();
 
+    void set_parent_rect(const Rect new_parent_rect) override;
     void show_audio_spectrum_view(const bool show);
 
    private:
@@ -147,6 +150,7 @@ class WaterfallView : public View {
 
     WaterfallWidget waterfall_widget{};
     FrequencyScale frequency_scale{};
+    bool running_{false};
 
     ChannelSpectrumFIFO* channel_fifo{nullptr};
     AudioSpectrum* audio_spectrum_data{nullptr};

firmware/application/ui/ui_textentry.cpp

@@ -21,9 +21,7 @@
  */
 
 #include "ui_textentry.hpp"
-//#include "portapack_persistent_memory.hpp"
 #include "ui_alphanum.hpp"
-//#include "ui_handwrite.hpp"
 
 using namespace portapack;
 

firmware/application/ui/ui_textentry.hpp

@@ -48,9 +48,9 @@ class TextEntryView : public View {
     void char_add(const char c);
     void char_delete();
 
-    TextField text_input;
+    TextEdit text_input;
     Button button_ok{
-        {22 * 8, 33 * 8, 7 * 8, 32},
+        {22 * 8, 32 * 8 - 3, 8 * 8, 3 * 16 + 3},
         "OK"};
 };
 

firmware/application/ui/ui_tone_key.cpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_tone_key.hpp"
+#include <utility>
+
+using namespace ui;
+
+namespace tonekey {
+
+void tone_keys_populate(OptionsField& field) {
+    OptionsField::options_t tone_key_options;
+    std::string tone_name;
+
+    for (size_t c = 0; c < tone_keys.size(); c++) {
+        auto f = tone_keys[c].second;
+        if ((c != 0) && (f < 1000 * 100))
+            tone_name = "CTCSS " + fx100_string(f) + " #" + tone_keys[c].first;
+        else
+            tone_name = tone_keys[c].first;
+
+        tone_key_options.emplace_back(tone_name, c);
+    }
+
+    field.set_options(std::move(tone_key_options));
+}
+
+}  // namespace tonekey

firmware/application/ui/ui_tone_key.hpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_TONE_KEY_H_
+#define __UI_TONE_KEY_H_
+
+#include "tone_key.hpp"
+#include "ui.hpp"
+#include "ui_widget.hpp"
+
+namespace tonekey {
+
+void tone_keys_populate(ui::OptionsField& field);
+
+}  // namespace tonekey
+
+#endif /*__UI_TONE_KEY_H_*/

firmware/application/ui_navigation.cpp

@@ -497,13 +497,8 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
         add_items({{"..", Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }}});
     }
     add_items({
-        {
-            "ADS-B",
-            Color::green(),
-            &bitmap_icon_adsb,
-            [&nav]() { nav.push<ADSBRxView>(); },
-        },
-        //{ "ACARS",	Color::yellow(),	&bitmap_icon_adsb,			[&nav](){ nav.push<ACARSAppView>(); }, },
+        {"ADS-B", Color::green(), &bitmap_icon_adsb, [&nav]() { nav.push<ADSBRxView>(); }},
+        //{ "ACARS",	Color::yellow(),	&bitmap_icon_adsb,			[&nav](){ nav.push<ACARSAppView>(); }},
         {"AIS Boats", Color::green(), &bitmap_icon_ais, [&nav]() { nav.push<AISAppView>(); }},
         {"AFSK", Color::yellow(), &bitmap_icon_modem, [&nav]() { nav.push<AFSKRxView>(); }},
         {"BTLE", Color::yellow(), &bitmap_icon_btle, [&nav]() { nav.push<BTLERxView>(); }},

firmware/application/ui_record_view.cpp

@@ -26,6 +26,7 @@ using namespace portapack;
 
 #include "io_file.hpp"
 #include "io_wave.hpp"
+#include "io_convert.hpp"
 
 #include "baseband_api.hpp"
 #include "metadata_file.hpp"
@@ -100,24 +101,27 @@ void RecordView::focus() {
     button_record.focus();
 }
 
-void RecordView::set_sampling_rate(const size_t new_sampling_rate) {
-    /* We are changing "REC" icon background to yellow in  BW rec Options >600kHz
+void RecordView::set_sampling_rate(size_t new_sampling_rate, OversampleRate new_oversample_rate) {
+    /* We are changing "REC" icon background to yellow in BW rec Options >600kHz
         where we are NOT recording full IQ .C16 files (recorded files are decimated ones).
-        Those decimated recorded files,has not the full IQ  samples .
-        are ok as recorded spectrum indication, but they  should not be used by Replay app.
+        Those decimated recorded files, has not the full IQ samples.
+        are ok as recorded spectrum indication, but they should not be used by Replay app.
 
-        We keep original black  background in all the correct IQ .C16 files BW's Options */
-    if (new_sampling_rate > 4800000) {  // > BW >600kHz  (fs=8*BW), (750kHz ...2750kHz)
+        We keep original black background in all the correct IQ .C16 files BW's Options */
+    if (new_sampling_rate > 4'800'000) {  // > BW >600kHz  (fs=8*BW), (750kHz...2750kHz)
         button_record.set_background(ui::Color::yellow());
     } else {
         button_record.set_background(ui::Color::black());
     }
 
-    if (new_sampling_rate != sampling_rate) {
+    if (new_sampling_rate != sampling_rate ||
+        new_oversample_rate != oversample_rate) {
         stop();
 
         sampling_rate = new_sampling_rate;
+        oversample_rate = new_oversample_rate;
         baseband::set_sample_rate(sampling_rate);
+        baseband::set_oversample_rate(oversample_rate);
 
         button_record.hidden(sampling_rate == 0);
         text_record_filename.hidden(sampling_rate == 0);
@@ -161,12 +165,13 @@ void RecordView::start() {
         rtcGetTime(&RTCD1, &datetime);
 
         // ISO 8601
-        std::string date_time = to_string_dec_uint(datetime.year(), 4, '0') +
-                                to_string_dec_uint(datetime.month(), 2, '0') +
-                                to_string_dec_uint(datetime.day(), 2, '0') + "T" +
-                                to_string_dec_uint(datetime.hour()) +
-                                to_string_dec_uint(datetime.minute()) +
-                                to_string_dec_uint(datetime.second());
+        std::string date_time =
+            to_string_dec_uint(datetime.year(), 4, '0') +
+            to_string_dec_uint(datetime.month(), 2, '0') +
+            to_string_dec_uint(datetime.day(), 2, '0') + "T" +
+            to_string_dec_uint(datetime.hour()) +
+            to_string_dec_uint(datetime.minute()) +
+            to_string_dec_uint(datetime.second());
 
         base_path = filename_stem_pattern.string() + "_" + date_time + "_" +
                     trim(to_string_freq(receiver_model.target_frequency())) + "Hz";
@@ -194,18 +199,18 @@ void RecordView::start() {
             }
         } break;
 
+        case FileType::RawS8:
         case FileType::RawS16: {
-            const auto metadata_file_error =
-                write_metadata_file(get_metadata_path(base_path),
-                                    {receiver_model.target_frequency(), sampling_rate / 8});
-            // Not sure why sample_rate is div. 8, but stored value matches rate settings.
+            const auto metadata_file_error = write_metadata_file(
+                get_metadata_path(base_path),
+                {receiver_model.target_frequency(), sampling_rate / toUType(oversample_rate)});
             if (metadata_file_error.is_valid()) {
                 handle_error(metadata_file_error.value());
                 return;
             }
 
-            auto p = std::make_unique<RawFileWriter>();
-            auto create_error = p->create(base_path.replace_extension(u".C16"));
+            auto p = std::make_unique<FileConvertWriter>();
+            auto create_error = p->create(base_path.replace_extension((file_type == FileType::RawS8) ? u".C8" : u".C16"));
             if (create_error.is_valid()) {
                 handle_error(create_error.value());
             } else {
@@ -261,13 +266,24 @@ void RecordView::update_status_display() {
         text_record_dropped.set(s);
     }
 
-    /*if (pitch_rssi_enabled) {
-                button_pitch_rssi.invert_colors();
-        }*/
+    /*
+    if (pitch_rssi_enabled) {
+        button_pitch_rssi.invert_colors();
+    }
+    */
 
-    if (sampling_rate) {
+    if (sampling_rate > 0) {
         const auto space_info = std::filesystem::space(u"");
-        const uint32_t bytes_per_second = file_type == FileType::WAV ? (sampling_rate * 2) : (sampling_rate / 8 * 4);  // TODO: Why 8/4??
+        // - Audio is 1 int16_t per sample or '2' bytes per sample.
+        // - C8 captures 2 (I,Q) int8_t per sample or '2' bytes per sample.
+        // - C16 captures 2 (I,Q) int16_t per sample or '4' bytes per sample.
+        const auto bytes_per_sample = file_type == FileType::RawS16 ? 4 : 2;
+        // WAV files are not oversampled, but C8 and C16 are. Divide by the
+        // oversample rate to get the effective sample rate.
+        const auto effective_sampling_rate = file_type == FileType::WAV
+                                                 ? sampling_rate
+                                                 : sampling_rate / toUType(oversample_rate);
+        const uint32_t bytes_per_second = effective_sampling_rate * bytes_per_sample;
         const uint32_t available_seconds = space_info.free / bytes_per_second;
         const uint32_t seconds = available_seconds % 60;
         const uint32_t available_minutes = available_seconds / 60;

firmware/application/ui_record_view.hpp

@@ -40,6 +40,7 @@ class RecordView : public View {
     std::function<void(std::string)> on_error{};
 
     enum FileType {
+        RawS8 = 1,
         RawS16 = 2,
         WAV = 3,
     };
@@ -55,7 +56,18 @@ class RecordView : public View {
 
     void focus() override;
 
-    void set_sampling_rate(const size_t new_sampling_rate);
+    /* Sets the sampling rate and the oversampling "decimation" rate.
+     * These values are passed down to the baseband proc_capture. For
+     * Audio (WAV) recording, the OversampleRate should not be
+     * specified and the default will be used. */
+    /* TODO: Currently callers are expected to have already multiplied the
+     * sample_rate with the oversample rate. It would be better move that
+     * logic to a single place. */
+    void set_sampling_rate(
+        size_t new_sampling_rate,
+        OversampleRate new_oversample_rate = OversampleRate::Rate8x);
+
+    void set_file_type(const FileType v) { file_type = v; }
 
     void start();
     void stop();
@@ -83,10 +95,11 @@ class RecordView : public View {
 
     const std::filesystem::path filename_stem_pattern;
     const std::filesystem::path folder;
-    const FileType file_type;
+    FileType file_type;
     const size_t write_size;
     const size_t buffer_count;
     size_t sampling_rate{0};
+    OversampleRate oversample_rate{OversampleRate::Rate8x};
     SignalToken signal_token_tick_second{};
 
     Rectangle rect_background{

firmware/baseband/baseband_thread.cpp

@@ -46,24 +46,34 @@ Thread* BasebandThread::thread = nullptr;
 BasebandThread::BasebandThread(
     uint32_t sampling_rate,
     BasebandProcessor* const baseband_processor,
-    const tprio_t priority,
-    baseband::Direction direction)
-    : baseband_processor{baseband_processor},
-      _direction{direction},
-      sampling_rate{sampling_rate} {
-    thread = chThdCreateStatic(baseband_thread_wa, sizeof(baseband_thread_wa),
-                               priority, ThreadBase::fn,
-                               this);
+    baseband::Direction direction,
+    bool auto_start,
+    tprio_t priority)
+    : baseband_processor_{baseband_processor},
+      direction_{direction},
+      sampling_rate_{sampling_rate},
+      priority_{priority} {
+    if (auto_start) start();
 }
 
 BasebandThread::~BasebandThread() {
-    chThdTerminate(thread);
-    chThdWait(thread);
-    thread = nullptr;
+    if (thread) {
+        chThdTerminate(thread);
+        chThdWait(thread);
+        thread = nullptr;
+    }
+}
+
+void BasebandThread::start() {
+    if (!thread) {
+        thread = chThdCreateStatic(
+            baseband_thread_wa, sizeof(baseband_thread_wa),
+            priority_, ThreadBase::fn, this);
+    }
 }
 
 void BasebandThread::set_sampling_rate(uint32_t new_sampling_rate) {
-    sampling_rate = new_sampling_rate;
+    sampling_rate_ = new_sampling_rate;
 }
 
 void BasebandThread::run() {
@@ -71,9 +81,7 @@ void BasebandThread::run() {
     baseband::dma::init();
 
     const auto baseband_buffer = std::make_unique<std::array<baseband::sample_t, 8192>>();
-    baseband::dma::configure(
-        baseband_buffer->data(),
-        direction());
+    baseband::dma::configure(baseband_buffer->data(), direction());
     // baseband::dma::allocate(4, 2048);
 
     baseband_sgpio.configure(direction());
@@ -85,10 +93,10 @@ void BasebandThread::run() {
         const auto buffer_tmp = baseband::dma::wait_for_buffer();
         if (buffer_tmp) {
             buffer_c8_t buffer{
-                buffer_tmp.p, buffer_tmp.count, sampling_rate};
+                buffer_tmp.p, buffer_tmp.count, sampling_rate_};
 
-            if (baseband_processor) {
-                baseband_processor->execute(buffer);
+            if (baseband_processor_) {
+                baseband_processor_->execute(buffer);
             }
         }
     }

firmware/baseband/baseband_thread.hpp

@@ -28,13 +28,20 @@
 
 #include <ch.h>
 
+/* NB: Because ThreadBase threads start when then are initialized (by default),
+ * they should be the last members in a Processor class to ensure the rest of the
+ * members are fully initialized before data handling starts. If the Procressor
+ * needs to do additional initialization (in its ctor), set 'auto_start' to false
+ * and manually call 'start()' on the thread. */
+
 class BasebandThread : public ThreadBase {
    public:
     BasebandThread(
         uint32_t sampling_rate,
         BasebandProcessor* const baseband_processor,
-        const tprio_t priority,
-        const baseband::Direction direction = baseband::Direction::Receive);
+        baseband::Direction direction,
+        bool auto_start = true,
+        tprio_t priority = (NORMALPRIO + 20));
     ~BasebandThread();
 
     BasebandThread(const BasebandThread&) = delete;
@@ -42,10 +49,12 @@ class BasebandThread : public ThreadBase {
     BasebandThread& operator=(const BasebandThread&) = delete;
     BasebandThread& operator=(BasebandThread&&) = delete;
 
+    void start() override;
+
     // This getter should die, it's just here to leak information to code that
     // isn't in the right place to begin with.
     baseband::Direction direction() const {
-        return _direction;
+        return direction_;
     }
 
     void set_sampling_rate(uint32_t new_sampling_rate);
@@ -53,9 +62,10 @@ class BasebandThread : public ThreadBase {
    private:
     static Thread* thread;
 
-    BasebandProcessor* baseband_processor{nullptr};
-    baseband::Direction _direction{baseband::Direction::Receive};
-    uint32_t sampling_rate{0};
+    BasebandProcessor* baseband_processor_;
+    baseband::Direction direction_;
+    uint32_t sampling_rate_;
+    const tprio_t priority_;
 
     void run() override;
 };

firmware/baseband/event_m4.cpp

@@ -19,21 +19,18 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "event_m4.hpp"
-#include "debug.hpp"
-
-#include "portapack_shared_memory.hpp"
-
-#include "message_queue.hpp"
-
 #include "ch.h"
-
+#include "debug.hpp"
+#include "event_m4.hpp"
 #include "lpc43xx_cpp.hpp"
-using namespace lpc43xx;
+#include "message_queue.hpp"
+#include "portapack_shared_memory.hpp"
 
 #include <cstdint>
 #include <array>
 
+using namespace lpc43xx;
+
 extern "C" {
 
 CH_IRQ_HANDLER(MAPP_IRQHandler) {
@@ -61,6 +58,10 @@ void EventDispatcher::run() {
 
     lpc43xx::creg::m0apptxevent::enable();
 
+    // Indicate to the M0 thread that
+    // M4 is ready to receive message events.
+    shared_memory.set_baseband_ready();
+
     while (is_running) {
         const auto events = wait();
         dispatch(events);

firmware/baseband/proc_acars.cpp

@@ -32,6 +32,7 @@ ACARSProcessor::ACARSProcessor() {
     decim_0.configure(taps_11k0_decim_0.taps, 33554432);
     decim_1.configure(taps_11k0_decim_1.taps, 131072);
     packet.clear();
+    baseband_thread.start();
 }
 
 void ACARSProcessor::execute(const buffer_c8_t& buffer) {

firmware/baseband/proc_acars.hpp

@@ -110,9 +110,6 @@ class ACARSProcessor : public BasebandProcessor {
    private:
     static constexpr size_t baseband_fs = 2457600;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -138,6 +135,11 @@ class ACARSProcessor : public BasebandProcessor {
         };*/
     baseband::Packet packet{};
 
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{
+        baseband_fs, this, baseband::Direction::Receive, /*auto_start*/ false};
+    RSSIThread rssi_thread{};
+
     void consume_symbol(const float symbol);
     void payload_handler(const baseband::Packet& packet);
 };

firmware/baseband/proc_adsbrx.hpp

@@ -36,15 +36,11 @@ using namespace adsb;
 class ADSBRXProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
     static constexpr size_t baseband_fs = 2000000;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     ADSBFrame frame{};
     bool configured{false};
     uint32_t prev_mag{0};
@@ -58,6 +54,10 @@ class ADSBRXProcessor : public BasebandProcessor {
     uint32_t sample{0};
     int32_t re{}, im{};
     int32_t amp{0};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
 };
 
 #endif

firmware/baseband/proc_adsbtx.hpp

@@ -29,14 +29,11 @@
 class ADSBTXProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const p) override;
 
    private:
     bool configured = false;
 
-    BasebandThread baseband_thread{4000000, this, NORMALPRIO + 20, baseband::Direction::Transmit};
-
     const complex8_t am_lut[4] = {
         {127, 0},
         {0, 127},
@@ -48,6 +45,9 @@ class ADSBTXProcessor : public BasebandProcessor {
     uint32_t phase{0};
 
     TXProgressMessage txprogress_message{};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{4000000, this, baseband::Direction::Transmit};
 };
 
 #endif

firmware/baseband/proc_afsk.hpp

@@ -32,14 +32,11 @@
 class AFSKProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const msg) override;
 
    private:
     bool configured = false;
 
-    BasebandThread baseband_thread{AFSK_SAMPLERATE, this, NORMALPRIO + 20, baseband::Direction::Transmit};
-
     uint32_t afsk_samples_per_bit{0};
     uint32_t afsk_phase_inc_mark{0};
     uint32_t afsk_phase_inc_space{0};
@@ -59,6 +56,9 @@ class AFSKProcessor : public BasebandProcessor {
     int8_t re{0}, im{0};
 
     TXProgressMessage txprogress_message{};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{AFSK_SAMPLERATE, this, baseband::Direction::Transmit};
 };
 
 #endif

firmware/baseband/proc_afskrx.hpp

@@ -38,7 +38,6 @@
 class AFSKRxProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
@@ -53,9 +52,6 @@ class AFSKRxProcessor : public BasebandProcessor {
         RECEIVE
     };
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -93,9 +89,13 @@ class AFSKRxProcessor : public BasebandProcessor {
     bool trigger_word{};
     bool triggered{};
 
-    void configure(const AFSKRxConfigureMessage& message);
-
     AFSKDataMessage data_message{false, 0};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+
+    void configure(const AFSKRxConfigureMessage& message);
 };
 
 #endif /*__PROC_TPMS_H__*/

firmware/baseband/proc_ais.cpp

@@ -30,6 +30,7 @@
 AISProcessor::AISProcessor() {
     decim_0.configure(taps_11k0_decim_0.taps, 33554432);
     decim_1.configure(taps_11k0_decim_1.taps, 131072);
+    baseband_thread.start();
 }
 
 void AISProcessor::execute(const buffer_c8_t& buffer) {

firmware/baseband/proc_ais.hpp

@@ -51,9 +51,6 @@ class AISProcessor : public BasebandProcessor {
    private:
     static constexpr size_t baseband_fs = 2457600;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -77,6 +74,11 @@ class AISProcessor : public BasebandProcessor {
             this->payload_handler(packet);
         }};
 
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{
+        baseband_fs, this, baseband::Direction::Receive, /*auto_start*/ false};
+    RSSIThread rssi_thread{};
+
     void consume_symbol(const float symbol);
     void payload_handler(const baseband::Packet& packet);
 };

firmware/baseband/proc_am_audio.hpp

@@ -38,7 +38,6 @@
 class NarrowbandAMAudio : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
@@ -46,9 +45,6 @@ class NarrowbandAMAudio : public BasebandProcessor {
     static constexpr size_t decim_2_decimation_factor = 4;
     static constexpr size_t channel_filter_decimation_factor = 1;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -65,6 +61,7 @@ class NarrowbandAMAudio : public BasebandProcessor {
     int32_t channel_filter_low_f = 0;
     int32_t channel_filter_high_f = 0;
     int32_t channel_filter_transition = 0;
+    bool configured{false};
 
     bool modulation_ssb = false;
     dsp::demodulate::AM demod_am{};
@@ -74,7 +71,10 @@ class NarrowbandAMAudio : public BasebandProcessor {
 
     SpectrumCollector channel_spectrum{};
 
-    bool configured{false};
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+
     void configure(const AMConfigureMessage& message);
     void capture_config(const CaptureConfigMessage& message);
 

firmware/baseband/proc_am_tv.hpp

@@ -38,15 +38,11 @@
 class WidebandFMAudio : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
     static constexpr size_t baseband_fs = 2000000;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -55,8 +51,12 @@ class WidebandFMAudio : public BasebandProcessor {
     AudioSpectrum audio_spectrum{};
     TvCollector channel_spectrum{};
     std::array<complex16_t, 256> spectrum{};
-
     bool configured{false};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+
     void configure(const WFMConfigureMessage& message);
 };
 

firmware/baseband/proc_aprsrx.hpp

@@ -75,7 +75,6 @@ static uint16_t crc_ccitt_tab[256] = {
 class APRSRxProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
@@ -90,9 +89,6 @@ class APRSRxProcessor : public BasebandProcessor {
         IN_FRAME
     };
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -135,6 +131,10 @@ class APRSRxProcessor : public BasebandProcessor {
 
     aprs::APRSPacket aprs_packet{};
 
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+
     void configure(const APRSRxConfigureMessage& message);
     void capture_config(const CaptureConfigMessage& message);
     void parse_packet();

firmware/baseband/proc_audiotx.hpp

@@ -37,8 +37,6 @@ class AudioTXProcessor : public BasebandProcessor {
    private:
     static constexpr size_t baseband_fs = 1536000;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Transmit};
-
     std::unique_ptr<StreamOutput> stream{};
 
     ToneGen tone_gen{};
@@ -61,6 +59,9 @@ class AudioTXProcessor : public BasebandProcessor {
 
     TXProgressMessage txprogress_message{};
     RequestSignalMessage sig_message{RequestSignalMessage::Signal::FillRequest};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Transmit};
 };
 
 #endif

firmware/baseband/proc_btlerx.hpp

@@ -39,16 +39,12 @@
 class BTLERxProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
     static constexpr size_t baseband_fs = 4000000;
     static constexpr size_t audio_fs = baseband_fs / 8 / 8 / 2;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
@@ -81,10 +77,13 @@ class BTLERxProcessor : public BasebandProcessor {
     int RB_SIZE{1000};
 
     bool configured{false};
+    AFSKDataMessage data_message{false, 0};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
 
     void configure(const BTLERxConfigureMessage& message);
-
-    AFSKDataMessage data_message{false, 0};
 };
 
 #endif /*__PROC_BTLERX_H__*/

firmware/baseband/proc_capture.cpp

@@ -23,21 +23,21 @@
 #include "proc_capture.hpp"
 
 #include "dsp_fir_taps.hpp"
-
 #include "event_m4.hpp"
-
 #include "utility.hpp"
 
 CaptureProcessor::CaptureProcessor() {
-    decim_0.configure(taps_200k_decim_0.taps, 33554432);
+    decim_0_4.configure(taps_200k_decim_0.taps, 33554432);
+    decim_0_8.configure(taps_200k_decim_0.taps, 33554432);
     decim_1.configure(taps_200k_decim_1.taps, 131072);
 
     channel_spectrum.set_decimation_factor(1);
+    baseband_thread.start();
 }
 
 void CaptureProcessor::execute(const buffer_c8_t& buffer) {
     /* 2.4576MHz, 2048 samples */
-    const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
+    const auto decim_0_out = decim_0_execute(buffer, dst_buffer);
     const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
     const auto& decimator_out = decim_1_out;
     const auto& channel = decimator_out;
@@ -66,9 +66,19 @@ void CaptureProcessor::on_message(const Message* const message) {
             channel_spectrum.on_message(message);
             break;
 
-        case Message::ID::SamplerateConfig:
-            samplerate_config(*reinterpret_cast<const SamplerateConfigMessage*>(message));
+        case Message::ID::SamplerateConfig: {
+            auto config = reinterpret_cast<const SamplerateConfigMessage*>(message);
+            baseband_fs = config->sample_rate;
+            update_for_rate_change();
             break;
+        }
+
+        case Message::ID::OversampleRateConfig: {
+            auto config = reinterpret_cast<const OversampleRateConfigMessage*>(message);
+            oversample_rate = config->oversample_rate;
+            update_for_rate_change();
+            break;
+        }
 
         case Message::ID::CaptureConfig:
             capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
@@ -79,11 +89,14 @@ void CaptureProcessor::on_message(const Message* const message) {
     }
 }
 
-void CaptureProcessor::samplerate_config(const SamplerateConfigMessage& message) {
-    baseband_fs = message.sample_rate;
+void CaptureProcessor::update_for_rate_change() {
     baseband_thread.set_sampling_rate(baseband_fs);
 
-    size_t decim_0_output_fs = baseband_fs / decim_0.decimation_factor;
+    auto decim_0_factor = oversample_rate == OversampleRate::Rate8x
+                              ? decim_0_4.decimation_factor
+                              : decim_0_8.decimation_factor;
+
+    size_t decim_0_output_fs = baseband_fs / decim_0_factor;
 
     size_t decim_1_input_fs = decim_0_output_fs;
     size_t decim_1_output_fs = decim_1_input_fs / decim_1.decimation_factor;
@@ -104,6 +117,20 @@ void CaptureProcessor::capture_config(const CaptureConfigMessage& message) {
     }
 }
 
+buffer_c16_t CaptureProcessor::decim_0_execute(const buffer_c8_t& src, const buffer_c16_t& dst) {
+    switch (oversample_rate) {
+        case OversampleRate::Rate8x:
+            return decim_0_4.execute(src, dst);
+
+        case OversampleRate::Rate16x:
+            return decim_0_8.execute(src, dst);
+
+        default:
+            chDbgPanic("Unhandled OversampleRate");
+            return {};
+    }
+}
+
 int main() {
     EventDispatcher event_dispatcher{std::make_unique<CaptureProcessor>()};
     event_dispatcher.run();

firmware/baseband/proc_capture.hpp

@@ -28,9 +28,7 @@
 #include "rssi_thread.hpp"
 
 #include "dsp_decimate.hpp"
-
 #include "spectrum_collector.hpp"
-
 #include "stream_input.hpp"
 
 #include <array>
@@ -41,23 +39,24 @@ class CaptureProcessor : public BasebandProcessor {
     CaptureProcessor();
 
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
-    // TODO: Repeated value needs to be transmitted from application side.
-    size_t baseband_fs = 0;
+    size_t baseband_fs = 3072000;
     static constexpr auto spectrum_rate_hz = 50.0f;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     std::array<complex16_t, 512> dst{};
     const buffer_c16_t dst_buffer{
         dst.data(),
         dst.size()};
 
-    dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0{};
+    /* NB: There are two decimation passes: 0 and 1. In pass 0, one of
+     * the following will be selected based on the oversample rate.
+     * use decim_0_4 for an overall decimation factor of 8.
+     * use decim_0_8 for an overall decimation factor of 16. */
+    dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0_4{};
+    dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0_8{};
+
     dsp::decimate::FIRC16xR16x16Decim2 decim_1{};
     int32_t channel_filter_low_f = 0;
     int32_t channel_filter_high_f = 0;
@@ -68,9 +67,19 @@ class CaptureProcessor : public BasebandProcessor {
     SpectrumCollector channel_spectrum{};
     size_t spectrum_interval_samples = 0;
     size_t spectrum_samples = 0;
+    OversampleRate oversample_rate{OversampleRate::Rate8x};
 
-    void samplerate_config(const SamplerateConfigMessage& message);
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{
+        baseband_fs, this, baseband::Direction::Receive, /*auto_start*/ false};
+    RSSIThread rssi_thread{};
+
+    /* Called to update members when the sample rate or oversample rate is changed. */
+    void update_for_rate_change();
     void capture_config(const CaptureConfigMessage& message);
+
+    /* Dispatch to the correct decim_0 based on oversample rate. */
+    buffer_c16_t decim_0_execute(const buffer_c8_t& src, const buffer_c16_t& dst);
 };
 
 #endif /*__PROC_CAPTURE_HPP__*/

firmware/baseband/proc_ert.hpp

@@ -67,9 +67,6 @@ class ERTProcessor : public BasebandProcessor {
     const size_t samples_per_symbol = channel_sampling_rate / symbol_rate;
     const float clock_recovery_rate = symbol_rate * 2;
 
-    BasebandThread baseband_thread{baseband_sampling_rate, this, NORMALPRIO + 20, baseband::Direction::Receive};
-    RSSIThread rssi_thread{NORMALPRIO + 10};
-
     clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery{
         clock_recovery_rate,
         symbol_rate,
@@ -116,6 +113,10 @@ class ERTProcessor : public BasebandProcessor {
     float offset_i{0.0f};
     float offset_q{0.0f};
 
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_sampling_rate, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+
     float abs(const complex8_t& v);
 };
 

firmware/baseband/proc_fsk.hpp

@@ -29,14 +29,11 @@
 class FSKProcessor : public BasebandProcessor {
    public:
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const p) override;
 
    private:
     bool configured = false;
 
-    BasebandThread baseband_thread{2280000, this, NORMALPRIO + 20, baseband::Direction::Transmit};
-
     uint32_t samples_per_bit{0};
     uint32_t length{0};
 
@@ -48,6 +45,9 @@ class FSKProcessor : public BasebandProcessor {
     uint32_t phase{0}, sphase{0};
 
     TXProgressMessage txprogress_message{};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{2280000, this, baseband::Direction::Transmit};
 };
 
 #endif

firmware/baseband/proc_gps_sim.cpp

@@ -29,7 +29,7 @@
 
 #include "utility.hpp"
 
-ReplayProcessor::ReplayProcessor() {
+GPSReplayProcessor::GPSReplayProcessor() {
     channel_filter_low_f = taps_200k_decim_1.low_frequency_normalized * 1000000;
     channel_filter_high_f = taps_200k_decim_1.high_frequency_normalized * 1000000;
     channel_filter_transition = taps_200k_decim_1.transition_normalized * 1000000;
@@ -39,44 +39,44 @@ ReplayProcessor::ReplayProcessor() {
     channel_spectrum.set_decimation_factor(1);
 
     configured = false;
+    baseband_thread.start();
 }
 
-void ReplayProcessor::execute(const buffer_c8_t& buffer) {
-    /* 4MHz, 2048 samples */
+void GPSReplayProcessor::execute(const buffer_c8_t& buffer) {
+    /* 2.6MHz, 2048 samples */
 
-    if (!configured) return;
+    if (!configured || !stream) return;
 
-    // File data is in C16 format, we need C8
-    // File samplerate is 500kHz, we're at 4MHz
-    // iq_buffer can only be 512 C16 samples (RAM limitation)
-    // To fill up the 2048-sample C8 buffer, we need:
-    // 2048 samples * 2 bytes per sample = 4096 bytes
-    // Since we're oversampling by 4M/500k = 8, we only need 2048/8 = 256 samples from the file and duplicate them 8 times each
-    // So 256 * 4 bytes per sample (C16) = 1024 bytes from the file
-    if (stream) {                                                             // sizeof(*buffer.p) = sizeof(C8) = 2*int8 = 2 bytes //buffer.count = 2048
-        const size_t bytes_to_read = sizeof(*buffer.p) * 1 * (buffer.count);  // *2 (C16), /8 (oversampling) should be == 1024
-        bytes_read += stream->read(iq_buffer.p, bytes_to_read);
-    }
+    // File data is in C8 format, which is what we need
+    // File samplerate is 2.6MHz, which is what we need
+    // To fill up the 2048-sample C8 buffer @ 2 bytes per sample = 4096 bytes
+    const size_t bytes_to_read = sizeof(*buffer.p) * 1 * (buffer.count);
+    size_t bytes_read_this_iteration = stream->read(iq_buffer.p, bytes_to_read);
+    size_t samples_read_this_iteration = bytes_read_this_iteration / sizeof(*buffer.p);
 
-    // Fill and "stretch"
-    for (size_t i = 0; i < buffer.count; i++) {
-        auto re_out = iq_buffer.p[i].real();
-        auto im_out = iq_buffer.p[i].imag();
-        buffer.p[i] = {(int8_t)re_out, (int8_t)im_out};
-    }
+    bytes_read += bytes_read_this_iteration;
 
-    spectrum_samples += buffer.count;
+    // NB: Couldn't we have just read the data into buffer.p to start with, or some DMA/cache coherency concern?
+    //
+    // for (size_t i = 0; i < buffer.count; i++) {
+    //     auto re_out = iq_buffer.p[i].real();
+    //     auto im_out = iq_buffer.p[i].imag();
+    //     buffer.p[i] = {(int8_t)re_out, (int8_t)im_out};
+    // }
+    memcpy(buffer.p, iq_buffer.p, bytes_read_this_iteration);  // memcpy should be more efficient than 1 byte at a time
+
+    spectrum_samples += samples_read_this_iteration;
     if (spectrum_samples >= spectrum_interval_samples) {
         spectrum_samples -= spectrum_interval_samples;
 
-        txprogress_message.progress = bytes_read / 1024;  // Inform UI about progress
+        txprogress_message.progress = bytes_read;  // Inform UI about progress
 
         txprogress_message.done = false;
         shared_memory.application_queue.push(txprogress_message);
     }
 }
 
-void ReplayProcessor::on_message(const Message* const message) {
+void GPSReplayProcessor::on_message(const Message* const message) {
     switch (message->id) {
         case Message::ID::UpdateSpectrum:
         case Message::ID::SpectrumStreamingConfig:
@@ -103,13 +103,13 @@ void ReplayProcessor::on_message(const Message* const message) {
     }
 }
 
-void ReplayProcessor::samplerate_config(const SamplerateConfigMessage& message) {
+void GPSReplayProcessor::samplerate_config(const SamplerateConfigMessage& message) {
     baseband_fs = message.sample_rate;
     baseband_thread.set_sampling_rate(baseband_fs);
     spectrum_interval_samples = baseband_fs / spectrum_rate_hz;
 }
 
-void ReplayProcessor::replay_config(const ReplayConfigMessage& message) {
+void GPSReplayProcessor::replay_config(const ReplayConfigMessage& message) {
     if (message.config) {
         stream = std::make_unique<StreamOutput>(message.config);
 
@@ -121,7 +121,7 @@ void ReplayProcessor::replay_config(const ReplayConfigMessage& message) {
 }
 
 int main() {
-    EventDispatcher event_dispatcher{std::make_unique<ReplayProcessor>()};
+    EventDispatcher event_dispatcher{std::make_unique<GPSReplayProcessor>()};
     event_dispatcher.run();
     return 0;
 }

firmware/baseband/proc_gps_sim.hpp

@@ -34,20 +34,17 @@
 #include <array>
 #include <memory>
 
-class ReplayProcessor : public BasebandProcessor {
+class GPSReplayProcessor : public BasebandProcessor {
    public:
-    ReplayProcessor();
+    GPSReplayProcessor();
 
     void execute(const buffer_c8_t& buffer) override;
-
     void on_message(const Message* const message) override;
 
    private:
-    size_t baseband_fs = 0;
+    size_t baseband_fs = 3072000;
     static constexpr auto spectrum_rate_hz = 50.0f;
 
-    BasebandThread baseband_thread{baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Transmit};
-
     std::array<complex8_t, 2048> iq{};
     const buffer_c8_t iq_buffer{
         iq.data(),
@@ -72,6 +69,10 @@ class ReplayProcessor : public BasebandProcessor {
 
     TXProgressMessage txprogress_message{};
     RequestSignalMessage sig_message{RequestSignalMessage::Signal::FillRequest};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{
+        baseband_fs, this, baseband::Direction::Transmit, /*auto_start*/ false};
 };
 
 #endif /*__PROC_GPS_SIM_HPP__*/