fix complicated timing logic (#1480 )

Incrementing date workaround for dead RTC battery (#1479 )
* Enable f_utime function * Added file_update_date() function * Added rtc_battery_workaround() function * Update ui_navigation.cpp
2026-09-15 02:52:58 +00:00 · 2023-10-09 20:01:40 +02:00 · 2023-10-09 12:04:46 +02:00 · 2023-10-09 12:03:11 +02:00 · 2023-10-08 22:21:00 +02:00 · 2023-10-08 14:57:59 -05:00
77 changed files with 13053 additions and 431 deletions
@@ -49,7 +49,7 @@ jobs:
        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
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard-no-map.zip sdcard
      - name: Download world map
        run: |
          wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -61,7 +61,7 @@ jobs:
          zip -j firmware.zip build/firmware/portapack-h1_h2-mayhem.bin && cd flashing && zip -r ../firmware.zip *
      - name: Create SD Card ZIP
        run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && zip -r sdcard.zip sdcard
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version_date.outputs.date }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard.zip sdcard
      - name: Create changelog
        env:
          GH_TOKEN: ${{ secrets.GH_TOKEN }}
@@ -33,7 +33,7 @@ jobs:
        run: docker run -e VERSION_STRING=${{ 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
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard-no-map.zip sdcard
      - name: Download world map
        run: |
          wget https://github.com/eried/portapack-mayhem/releases/download/world_map/world_map.zip
@@ -45,7 +45,7 @@ jobs:
          zip -j firmware.zip build/firmware/portapack-h1_h2-mayhem.bin && cd flashing && zip -r ../firmware.zip *
      - name: Create SD Card ZIP
        run: |
-          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && zip -r sdcard.zip sdcard
+          mkdir -p sdcard/FIRMWARE && cp build/firmware/portapack-h1_h2-mayhem.bin sdcard/FIRMWARE/portapack-mayhem_${{ steps.version.outputs.version }}.bin && mkdir -p sdcard/APPS && cp build/firmware/application/*.ppma sdcard/APPS && zip -r sdcard.zip sdcard
      - name: Create changelog
        env:
          GH_TOKEN: ${{ secrets.GH_TOKEN }}
@@ -42,6 +42,12 @@ if ("$ENV{VERSION_STRING}" STREQUAL "")
 	endif (GIT_VERSION_FOUND)
 endif()

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

@@ -26,6 +26,7 @@ set(CHIBIOS ${PROJECT_SOURCE_DIR}/chibios)
 set(CHIBIOS_PORTAPACK ${PROJECT_SOURCE_DIR}/chibios-portapack)

 set(EXTRACT_CPLD_DATA ${PROJECT_SOURCE_DIR}/tools/extract_cpld_data.py)
+set(EXPORT_EXTERNAL_APP_IMAGES ${PROJECT_SOURCE_DIR}/tools/export_external_apps.py)
 set(MAKE_SPI_IMAGE ${PROJECT_SOURCE_DIR}/tools/make_spi_image.py)
 set(MAKE_IMAGE_CHUNK ${PROJECT_SOURCE_DIR}/tools/make_image_chunk.py)
 set(LZ4 lz4)
@@ -55,8 +56,15 @@ add_custom_target(
 	program
 	COMMAND dfu-util --device 1fc9:000c --download ${HACKRF_FIRMWARE_DFU_IMAGE} || (exit 0) # We need to add it for dfu-utils v.011 , (in v.09 it is not necessary)
 	COMMAND sleep 3s
-	COMMAND hackrf_spiflash -w ${FIRMWARE_FILENAME}
-	DEPENDS ${FIRMWARE_FILENAME}
+	COMMAND hackrf_spiflash -i -R -w ${FIRMWARE_FILENAME}
+	DEPENDS firmware ${FIRMWARE_FILENAME}
+)
+
+add_custom_target(
+	program-external-apps
+	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+	COMMAND ${PROJECT_SOURCE_DIR}/tools/copy_external_apps.sh
+	DEPENDS program
 )

 # TODO: Bad hack to fix location of LICENSE file for tar.
@@ -32,7 +32,7 @@ include(CheckCXXCompilerFlag)
 project(application)

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

 # C specific options here (added to USE_OPT).
 set(USE_COPT "-std=gnu99")
@@ -97,6 +97,7 @@ include(${CHIBIOS_PORTAPACK}/os/ports/GCC/ARMCMx/LPC43xx_M0/port.cmake)
 include(${CHIBIOS}/os/kernel/kernel.cmake)
 include(${CHIBIOS_PORTAPACK}/os/various/fatfs_bindings/fatfs.cmake)
 include(${CHIBIOS}/test/test.cmake)
+include(external/external.cmake)

 # Define linker script file here
 set(LDSCRIPT ${PORTLD}/LPC43xx_M0.ld)
@@ -256,7 +257,6 @@ set(CPPSRC
 	apps/ui_about_simple.cpp
 	apps/ui_adsb_rx.cpp
 	apps/ui_adsb_tx.cpp
-	apps/ui_afsk_rx.cpp
 	apps/ui_aprs_rx.cpp
 	apps/ui_aprs_tx.cpp
 	apps/ui_bht_tx.cpp
@@ -322,6 +322,9 @@ set(CPPSRC
 	${CPLD_20150901_DATA_CPP}
 	${CPLD_20170522_DATA_CPP}
 	${HACKRF_CPLD_DATA_CPP}
+	ui_external_items_menu_loader.cpp
+
+	${EXTCPPSRC}
 )

 # C sources to be compiled in ARM mode regardless of the global setting.
@@ -397,7 +400,7 @@ set(CPPWARN "-Wall -Wextra -Wno-psabi")
 # List all default C defines here, like -D_DEBUG=1
 # TODO: Switch -DCRT0_INIT_DATA depending on load from RAM or SPIFI?
 # NOTE: _RANDOM_TCC to kill a GCC 4.9.3 error with std::max argument types
-set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"'")
+set(DDEFS "-DLPC43XX -DLPC43XX_M0 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"' -DVERSION_MD5=${VERSION_MD5}")

 # List all default ASM defines here, like -D_DEBUG=1
 set(DADEFS)
@@ -466,12 +469,13 @@ set_target_properties(${PROJECT_NAME}.elf PROPERTIES LINK_DEPENDS ${LDSCRIPT})
 add_definitions(${DEFS})
 include_directories(. ${INCDIR})
 link_directories(${LLIBDIR})
-target_link_libraries(${PROJECT_NAME}.elf ${LIBS})
+target_link_libraries(${PROJECT_NAME}.elf ${LIBS} "-L${CMAKE_CURRENT_LIST_DIR}/external")
 target_link_libraries(${PROJECT_NAME}.elf -Wl,-Map=${PROJECT_NAME}.map)

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

@@ -74,7 +74,10 @@ void GpsSimAppView::on_file_changed(const fs::path& new_file_path) {
    auto duration = ms_duration(file_size, transmitter_model.sampling_rate(), 2);
    text_duration.set(to_string_time_ms(duration));

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

 void GpsSimAppView::on_tx_progress(const uint32_t progress) {
@@ -173,6 +176,8 @@ GpsSimAppView::GpsSimAppView(
        &waterfall,
    });

+    transmitter_model.set_baseband_bandwidth(15'000'000);  // GPS L1 signal use to have wide band spectrum, still with lobule energy -30dB's at + - 15 Mhz
+
    if (!settings_.radio_loaded()) {
        field_frequency.set_value(initial_target_frequency);
        transmitter_model.set_sampling_rate(2600000);
@@ -120,6 +120,7 @@ void SoundBoardView::start_tx(const uint32_t id) {
    );
    baseband::set_sample_rate(sample_rate);

+    transmitter_model.set_baseband_bandwidth(1'750'000);  // the Minimum TX LPF  1M75 is fine.
    transmitter_model.enable();

    tx_view.set_transmitting(true);
@@ -296,6 +296,10 @@ void ADSBTxView::generate_frames() {
 void ADSBTxView::start_tx() {
    generate_frames();

+    /* Already tested , with SDR Angel + another Hackrf RX  and dump1090 + SDR RLT. Final conclusion is TX LPF 6 Mhz is
+     * the best settings to fulfill ADSB transponder spectrum mask requirements (<=-20 dB's at +-7Mhz , <=-40 dB's at +-23Mhz )
+     * and not showing any ADSB data decoding degradation.*/
+    transmitter_model.set_baseband_bandwidth(6'000'000);  // best settings for ADSB TX.
    transmitter_model.enable();

    baseband::set_adsb();
@@ -57,6 +57,7 @@ void APRSTXView::start_tx() {
    // uint8_t * bb_data_ptr = shared_memory.bb_data.data;
    // text_payload.set(to_string_hex_array(bb_data_ptr + 56, 15));

+    transmitter_model.set_baseband_bandwidth(1'750'000);  // APRS Automatic Packet Reporting System (APRS).AFSK with NBFM , max BW= 12k5 , then TX LPF min 1M75
    transmitter_model.enable();

    baseband::set_afsk_data(
@@ -67,6 +67,7 @@ void CoasterPagerView::generate_frame() {
 void CoasterPagerView::start_tx() {
    generate_frame();

+    transmitter_model.set_baseband_bandwidth(1'750'000);  // AFSK narrowband ,low baud,  max FM dev 150khz , std 10khz. TX LPF=1M75 the min.
    transmitter_model.enable();

    baseband::set_fsk_data(19 * 8, 2280000 / 1000, 5000, 32);
@@ -30,6 +30,7 @@
 #include "ui_remote.hpp"
 #include "ui_ss_viewer.hpp"
 #include "ui_text_editor.hpp"
+#include "ui_iq_trim.hpp"
 #include "string_format.hpp"
 #include "portapack.hpp"
 #include "event_m0.hpp"
@@ -566,6 +567,7 @@ FileManagerView::FileManagerView(
        &button_new_file,
        &button_open_notepad,
        &button_rename_timestamp,
+        &button_open_iq_trim,
    });

    menu_view.on_highlight = [this]() {
@@ -648,6 +650,14 @@ FileManagerView::FileManagerView(
        } else
            nav_.display_modal("Timestamp Rename", "Can't rename that.");
    };
+
+    button_open_iq_trim.on_select = [this]() {
+        auto path = get_selected_full_path();
+        if (selected_is_valid() && !get_selected_entry().is_directory && is_cxx_capture_file(path)) {
+            nav_.push<IQTrimView>(path);
+        } else
+            nav_.display_modal("IQ Trim", "Not a capture file.");
+    };
 }

 }  // namespace ui
@@ -272,6 +272,12 @@ class FileManagerView : public FileManBaseView {
        &bitmap_icon_options_datetime,
        Color::orange(),
        /*vcenter*/ true};
+
+    NewButton button_open_iq_trim{
+        {9 * 8, 34 * 8, 4 * 8, 32},
+        {},
+        &bitmap_icon_trim,
+        Color::orange()};
 };

 } /* namespace ui */
@@ -23,6 +23,7 @@

 #include "ui_freqman.hpp"

+#include "binder.hpp"
 #include "event_m0.hpp"
 #include "portapack.hpp"
 #include "rtc_time.hpp"
@@ -152,28 +153,14 @@ FrequencySaveView::FrequencySaveView(
    add_children(
        {&labels,
         &big_display,
-         &button_clear,
-         &button_edit,
         &button_save,
-         &text_description});
+         &field_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();
-    };
-
-    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();
-        });
-    };
+    bind(field_description, entry_.description, nav);

    button_save.on_select = [this, &nav](Button&) {
        db_.insert_entry(db_.entry_count(), entry_);
@@ -181,9 +168,13 @@ FrequencySaveView::FrequencySaveView(
    };
 }

+void FrequencySaveView::focus() {
+    refresh_ui();
+    FreqManBaseView::focus();
+}
+
 void FrequencySaveView::refresh_ui() {
    big_display.set(entry_.frequency_a);
-    text_description.set(entry_.description);
 }

 /* FrequencyLoadView *************************************/
@@ -376,69 +367,26 @@ FrequencyEditView::FrequencyEditView(
    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);
+    bind(field_type, entry_.type, [this](auto) {
        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;
+    bind(field_freq_a, entry_.frequency_a, nav, [this](auto) {
        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;
+    bind(field_freq_b, entry_.frequency_b, nav, [this](auto) {
        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);
+    bind(field_modulation, entry_.modulation, [this](auto) {
        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);
-                    });
-    };
+    bind(field_bandwidth, entry_.bandwidth);
+    bind(field_step, entry_.step);
+    bind(field_tone, entry_.tone);
+    bind(field_description, entry_.description, nav_);

    button_save.on_select = [this](Button&) {
        if (on_save)
@@ -87,9 +87,9 @@ class FrequencySaveView : public FreqManBaseView {
   public:
    FrequencySaveView(NavigationView& nav, const rf::Frequency value);
    std::string title() const override { return "Save freq"; }
+    void focus() override;

   private:
-    std::string temp_buffer_{};
    freqman_entry entry_{};

    void refresh_ui();
@@ -101,15 +101,9 @@ class FrequencySaveView : public FreqManBaseView {
    Labels labels{
        {{0 * 8, 6 * 16}, "Description:", Color::white()}};

-    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"};
+    TextField field_description{
+        {0 * 8, 7 * 16, 30 * 8, 1 * 16},
+        ""};

    Button button_save{
        {0 * 8, 17 * 16, 15 * 8, 2 * 16},
@@ -47,10 +47,7 @@ IQTrimView::IQTrimView(NavigationView& nav)
        auto open_view = nav_.push<FileLoadView>(".C*");
        open_view->push_dir(u"CAPTURES");
        open_view->on_changed = [this](fs::path path) {
-            path_ = std::move(path);
-            profile_capture();
-            compute_range();
-            refresh_ui();
+            open_file(path);
        };
    };

@@ -84,6 +81,18 @@ IQTrimView::IQTrimView(NavigationView& nav)
    };
 }

+IQTrimView::IQTrimView(NavigationView& nav, const fs::path& path)
+    : IQTrimView(nav) {
+    open_file(path);
+}
+
+void IQTrimView::open_file(const std::filesystem::path& path) {
+    path_ = std::move(path);
+    profile_capture();
+    compute_range();
+    refresh_ui();
+}
+
 void IQTrimView::paint(Painter& painter) {
    if (info_) {
        uint32_t power_cutoff = field_cutoff.value() * static_cast<uint64_t>(info_->max_power) / 100;
@@ -68,12 +68,15 @@ class TrimProgressUI {
 class IQTrimView : public View {
   public:
    IQTrimView(NavigationView& nav);
+    IQTrimView(NavigationView& nav, const std::filesystem::path& path);

    std::string title() const override { return "IQ Trim"; }
    void paint(Painter& painter) override;
    void focus() override;

   private:
+    void open_file(const std::filesystem::path& path);
+
    /* Update controls with latest values. */
    void refresh_ui();

@@ -261,6 +261,7 @@ void JammerView::start_tx() {

        transmitter_model.set_rf_amp(field_amp.value());
        transmitter_model.set_tx_gain(field_gain.value());
+        transmitter_model.set_baseband_bandwidth(28'000'000);  // Although tx is narrowband , let's use Max TX LPF .
        transmitter_model.enable();

        baseband::set_jammer(true, (JammerType)options_type.selected_index(), options_speed.selected_index_value());
@@ -288,7 +289,8 @@ void JammerView::on_timer() {
        mscounter = 0;
        if (jamming) {
            if (cooling) {
-                if (++seconds >= field_timepause.value()) {  // Re-start TX
+                if (++seconds >= field_timepause.value()) {                // Re-start TX
+                    transmitter_model.set_baseband_bandwidth(28'000'000);  // Although tx is narrowband , let's use Max TX LPF .
                    transmitter_model.enable();
                    button_transmit.set_text("STOP");
                    baseband::set_jammer(true, (JammerType)options_type.selected_index(), options_speed.selected_index_value());
@@ -87,6 +87,10 @@ void MicTXView::set_tx(bool enable) {
        transmitting = true;
        configure_baseband();
        transmitter_model.set_target_frequency(tx_frequency);  // Now, no need: transmitter_model.set_tx_gain(tx_gain), nor (rf_amp);
+
+        /* The max. Power Spectrum Densitiy in WFM with High tone mod level (80%) and high 32kHZ subtone as fmod.  with max fdeviation 150k ,
+         BW aprox = 2 *(150K + 32K) = 364khz, then we just select the minimum TX  LPF 1M75. */
+        transmitter_model.set_baseband_bandwidth(1'750'000);
        transmitter_model.enable();
        portapack::pin_i2s0_rx_sda.mode(3);  // This is already done in audio::init but gets changed by the CPLD overlay reprogramming
    } else {
@@ -273,7 +273,7 @@ void PlaylistView::send_current_track() {
    // ReplayThread starts immediately on construction; must be set before creating.
    transmitter_model.set_target_frequency(current()->metadata.center_frequency);
    transmitter_model.set_sampling_rate(get_actual_sample_rate(current()->metadata.sample_rate));
-    transmitter_model.set_baseband_bandwidth(baseband_bandwidth);
+    transmitter_model.set_baseband_bandwidth(current()->metadata.sample_rate <= 500'000 ? 1'750'000 : 2'500'000);  // TX LPF min 1M75 for SR <=500K, and  2M5 (by experimental test) for SR >500K
    transmitter_model.enable();

    // Reset the transmit progress bar.
@@ -60,7 +60,6 @@ class PlaylistView : public View {

    // More header == less spectrum view.
    static constexpr ui::Dim header_height = 6 * 16;
-    static constexpr uint32_t baseband_bandwidth = 2'500'000;

    struct playlist_entry {
        std::filesystem::path path{};
@@ -187,6 +187,7 @@ void RDSView::start_tx() {
    else
        frame_datetime.clear();

+    transmitter_model.set_baseband_bandwidth(1'750'000);  // Big Spectrum harmonics reduction, and now quicker decoding time.
    transmitter_model.enable();

    tx_thread = std::make_unique<RDSThread>(frames);
@@ -103,7 +103,6 @@ void ReconView::reset_indexes() {
 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:
@@ -117,7 +116,6 @@ void ReconView::update_description() {
        }
        description += current_entry().description;
    }
-
    desc_cycle.set(description);
 }

@@ -496,6 +494,7 @@ ReconView::ReconView(NavigationView& nav)

    button_manual_recon.on_select = [this](Button&) {
        button_remove.set_text("DELETE");
+        button_add.hidden(false);
        scanner_mode = false;
        manual_mode = true;
        recon_pause();
@@ -539,7 +538,7 @@ ReconView::ReconView(NavigationView& nav)
            button_scanner_mode.set_style(&Styles::white);
            button_scanner_mode.set_text("MANUAL");
            file_name.set_style(&Styles::white);
-            file_name.set("MANUAL RANGE RECON");
+            file_name.set("MANUAL => " + output_file);
            desc_cycle.set_style(&Styles::white);

            last_entry.modulation = freqman_invalid_index;
@@ -608,12 +607,12 @@ ReconView::ReconView(NavigationView& nav)
            scanner_mode = false;
            button_scanner_mode.set_style(&Styles::blue);
            button_scanner_mode.set_text("RECON");
-            button_remove.set_text("DELETE");
+            button_remove.set_text("REMOVE");
        } else {
            scanner_mode = true;
            button_scanner_mode.set_style(&Styles::red);
            button_scanner_mode.set_text("SCAN");
-            button_scanner_mode.set_text("REMOVE");
+            button_remove.set_text("DELETE");
        }
        frequency_file_load(true);
        if (autostart) {
@@ -621,12 +620,17 @@ ReconView::ReconView(NavigationView& nav)
        } else {
            recon_pause();
        }
+        button_add.hidden(scanner_mode);
+        if (scanner_mode)  // only needed when hiding, UI mayhem
+            set_dirty();
    };

    button_config.on_select = [this, &nav](Button&) {
        if (is_recording)  // disabling config while recording
            return;
+
        clear_freqlist_for_ui_action();
+
        freq_lock = 0;
        timer = 0;
        auto open_view = nav.push<ReconSetupView>(input_file, output_file);
@@ -733,30 +737,22 @@ void ReconView::frequency_file_load(bool) {
        button_scanner_mode.set_text("RECON");
    }

+    file_name.set(file_input + "=>" + output_file);
+
    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)) {
+    if (!load_freqman_file(file_input, frequency_list, options) || frequency_list.empty()) {
        file_name.set_style(&Styles::red);
-        desc_cycle.set(" NO " + file_input + ".TXT FILE ...");
-        file_name.set("=> NO DATA");
-    } else {
-        file_name.set(file_input + "=>" + output_file);
-        if (frequency_list.size() == 0) {
-            file_name.set_style(&Styles::red);
-            desc_cycle.set("/0 no entries in list");
-            file_name.set("BadOrEmpty " + file_input);
-        } else {
-            if (frequency_list.size() > FREQMAN_MAX_PER_FILE) {
-                file_name.set_style(&Styles::yellow);
-            }
-        }
+        desc_cycle.set("...empty file...");
+        frequency_list.clear();
+        text_cycle.set_text(" ");
+        return;
    }

-    if (frequency_list.empty()) {
-        text_cycle.set_text(" ");
-        return;  // Can't really do much.
+    if (frequency_list.size() > FREQMAN_MAX_PER_FILE) {
+        file_name.set_style(&Styles::yellow);
    }

    reset_indexes();
@@ -781,19 +777,8 @@ void ReconView::frequency_file_load(bool) {
 }

 void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
-    systime_t time_interval = 100;
-    uint32_t local_recon_lock_duration = recon_lock_duration;
-
    chrono_end = chTimeNow();
-    if (field_mode.selected_index_value() == SPEC_MODULATION) {
-        time_interval = chrono_end - chrono_start;
-        if (field_lock_wait.value() == 0) {
-            if (time_interval <= 1)             // capping here to avoid freeze because too quick
-                local_recon_lock_duration = 2;  // minimum working tested value
-            else
-                local_recon_lock_duration = time_interval;
-        }
-    }
+    systime_t time_interval = chrono_end - chrono_start;
    chrono_start = chrono_end;

    // hack to reload the list if it was cleared by going into CONFIG
@@ -813,7 +798,7 @@ void ReconView::on_statistics_update(const ChannelStatistics& statistics) {
        if (!timer) {
            status = 0;
            freq_lock = 0;
-            timer = local_recon_lock_duration;
+            timer = recon_lock_duration;
        }
        if (freq_lock < recon_lock_nb_match)  // LOCKING
        {
@@ -1214,14 +1199,6 @@ void ReconView::handle_remove_current_item() {
        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.
@@ -1232,6 +1209,17 @@ void ReconView::handle_remove_current_item() {

        freq_db.delete_entry(entry);
    }
+
+    // Clip
+    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));
+    } else {
+        current_index = 0;
+        text_cycle.set_text(" ");
+    }
+
+    update_description();
 }

 } /* namespace ui */
@@ -303,7 +303,7 @@ class ReconView : public View {
    NumberField field_lock_wait{
        {25 * 8, 24 * 8 + 4},
        4,
-        {0, RECON_MAX_LOCK_DURATION},
+        {STATS_UPDATE_INTERVAL, RECON_MAX_LOCK_DURATION},
        STATS_UPDATE_INTERVAL,
        ' ',
    };
@@ -21,6 +21,7 @@

 #include "ui_remote.hpp"

+#include "binder.hpp"
 #include "convert.hpp"
 #include "file_reader.hpp"
 #include "io_convert.hpp"
@@ -239,19 +240,9 @@ RemoteEntryEditView::RemoteEntryEditView(
        &button_done,
    });

-    // TODO: It's time to make field bindings and clean this mess up.
-    field_name.on_change = [this](TextField& tf) {
-        entry_.name = tf.get_text();
-        button_preview.set_text(entry_.name);
-    };
-    field_name.on_select = [this, &nav](TextField& tf) {
-        temp_buffer_ = tf.get_text();
-        text_prompt(nav, temp_buffer_, text_edit_max,
-                    [this, &tf](std::string& str) {
-                        tf.set_text(str);
-                    });
-    };
-    field_name.set_text(entry_.name);
+    bind(field_name, entry_.name, nav, [this](auto& v) {
+        button_preview.set_text(v);
+    });

    field_path.on_select = [this, &nav](TextField&) {
        auto open_view = nav.push<FileLoadView>(".C*");
@@ -262,31 +253,16 @@ RemoteEntryEditView::RemoteEntryEditView(
        };
    };

-    field_freq.on_edit = [this, &nav]() {
-        auto freq_view = nav.push<FrequencyKeypadView>(entry_.metadata.center_frequency);
-        freq_view->on_changed = [this](rf::Frequency f) {
-            entry_.metadata.center_frequency = f;
-            field_freq.set_value(f);
-        };
-    };
-
-    field_icon_index.on_change = [this](int32_t v) {
-        entry_.icon = v;
+    bind(field_freq, entry_.metadata.center_frequency, nav);
+    bind(field_icon_index, entry_.icon, [this](auto v) {
        button_preview.set_bitmap(RemoteIcons::get(v));
-    };
-    field_icon_index.set_value(entry.icon);
-
-    field_fg_color_index.on_change = [this](int32_t v) {
-        entry_.fg_color = v;
+    });
+    bind(field_fg_color_index, entry_.fg_color, [this](auto v) {
        button_preview.set_color(RemoteColors::get(v));
-    };
-    field_fg_color_index.set_value(entry_.fg_color);
-
-    field_bg_color_index.on_change = [this](int32_t v) {
-        entry_.bg_color = v;
+    });
+    bind(field_bg_color_index, entry_.bg_color, [this](auto) {
        button_preview.set_dirty();
-    };
-    field_bg_color_index.set_value(entry_.bg_color);
+    });

    button_delete.on_select = [this, &nav]() {
        nav.display_modal(
@@ -485,6 +461,7 @@ void RemoteView::edit_button(RemoteButton& btn) {
    nav_.set_on_pop([this]() {
        refresh_ui();
        set_needs_save();
+        focus();  // Need to refocus after refreshing the buttons.
    });

    edit_view->on_delete = [this](RemoteEntryModel& to_delete) {
@@ -195,7 +195,6 @@ class RemoteEntryEditView : public View {

   private:
    RemoteEntryModel& entry_;
-    std::string temp_buffer_{};

    void refresh_ui();
    void load_path(std::filesystem::path&& path);
@@ -23,7 +23,9 @@
 #include "ui_search.hpp"

 #include "baseband_api.hpp"
+#include "binder.hpp"
 #include "string_format.hpp"
+#include "ui_freqman.hpp"

 using namespace portapack;

@@ -47,8 +49,61 @@ void RecentEntriesTable<SearchRecentEntries>::draw(
    painter.draw_string(target_rect.location(), style, to_string_short_freq(entry.frequency) + " " + entry.time + " " + str_duration);
 }

-void SearchView::focus() {
-    field_frequency_min.focus();
+/* SearchView ********************************************/
+
+SearchView::SearchView(
+    NavigationView& nav)
+    : nav_(nav) {
+    baseband::run_image(portapack::spi_flash::image_tag_wideband_spectrum);
+
+    add_children({&labels,
+                  &field_frequency_min,
+                  &field_frequency_max,
+                  &field_lna,
+                  &field_vga,
+                  &field_threshold,
+                  &text_mean,
+                  &text_slices,
+                  &text_rate,
+                  &text_infos,
+                  &vu_max,
+                  &progress_timers,
+                  &check_snap,
+                  &options_snap,
+                  &big_display,
+                  &recent_entries_view});
+
+    baseband::set_spectrum(SEARCH_SLICE_WIDTH, 31);
+
+    recent_entries_view.set_parent_rect({0, 28 * 8, screen_width, 12 * 8});
+    recent_entries_view.on_select = [this, &nav](const SearchRecentEntry& entry) {
+        nav.push<FrequencySaveView>(entry.frequency);
+    };
+
+    text_mean.set_style(&Styles::grey);
+    text_slices.set_style(&Styles::grey);
+    text_rate.set_style(&Styles::grey);
+    progress_timers.set_style(&Styles::grey);
+    big_display.set_style(&Styles::grey);
+
+    field_frequency_min.set_step(100'000);
+    bind(field_frequency_min, settings_.freq_min, nav, [this](auto) {
+        on_range_changed();
+    });
+
+    field_frequency_max.set_step(100'000);
+    bind(field_frequency_max, settings_.freq_max, nav, [this](auto) {
+        on_range_changed();
+    });
+
+    bind(field_threshold, settings_.power_threshold);
+    bind(check_snap, settings_.snap_search);
+    bind(options_snap, settings_.snap_step);
+
+    progress_timers.set_max(DETECT_DELAY);
+
+    on_range_changed();
+    receiver_model.enable();
 }

 SearchView::~SearchView() {
@@ -56,6 +111,18 @@ SearchView::~SearchView() {
    baseband::shutdown();
 }

+void SearchView::on_show() {
+    baseband::spectrum_streaming_start();
+}
+
+void SearchView::on_hide() {
+    baseband::spectrum_streaming_stop();
+}
+
+void SearchView::focus() {
+    field_frequency_min.focus();
+}
+
 void SearchView::do_detection() {
    uint8_t power_max = 0;
    int32_t bin_max = -1;
@@ -83,7 +150,7 @@ void SearchView::do_detection() {
        if (power > overall_power_max)
            overall_power_max = power;

-        if ((power >= mean_power + power_threshold) && (power > power_max)) {
+        if ((power >= mean_power + settings_.power_threshold) && (power > power_max)) {
            power_max = power;
            bin_max = slices[slice].max_index;
            slice_max = slice;
@@ -104,7 +171,7 @@ void SearchView::do_detection() {
                    }

                    // Check range
-                    if ((resolved_frequency >= f_min) && (resolved_frequency <= f_max)) {
+                    if ((resolved_frequency >= settings_.freq_min) && (resolved_frequency <= settings_.freq_max)) {
                        duration = 0;

                        auto& entry = ::on_packet(recent, resolved_frequency);
@@ -159,16 +226,47 @@ void SearchView::do_detection() {
    }
 }

-void SearchView::add_spectrum_pixel(Color color) {
-    // Is avoiding floats really necessary ?
-    bin_skip_acc += bin_skip_frac;
-    if (bin_skip_acc < 0x10000)
-        return;
+void SearchView::do_timers() {
+    if (timing_div >= 60) {
+        // ~1Hz

-    bin_skip_acc -= 0x10000;
+        timing_div = 0;

-    if (pixel_index < 240)
-        spectrum_row[pixel_index++] = color;
+        // Update scan rate
+        text_rate.set(to_string_dec_uint(search_counter, 3));
+        search_counter = 0;
+    }
+
+    if (timing_div % 12 == 0) {
+        // ~5Hz
+
+        // Update power levels
+        text_mean.set(to_string_dec_uint(mean_power, 3));
+
+        vu_max.set_value(overall_power_max);
+        vu_max.set_mark(mean_power + settings_.power_threshold);
+    }
+
+    if (timing_div % 6 == 0) {
+        // ~10Hz
+
+        // Update timing indicator
+        if (locked) {
+            progress_timers.set_max(RELEASE_DELAY);
+            progress_timers.set_value(RELEASE_DELAY - release_timer);
+        } else {
+            progress_timers.set_max(DETECT_DELAY);
+            progress_timers.set_value(detect_timer);
+        }
+
+        // Increment timers
+        if (detect_timer < DETECT_DELAY) detect_timer++;
+        if (release_timer < RELEASE_DELAY) release_timer++;
+
+        if (locked) duration++;
+    }
+
+    timing_div++;
 }

 void SearchView::on_channel_spectrum(const ChannelSpectrum& spectrum) {
@@ -221,22 +319,14 @@ void SearchView::on_channel_spectrum(const ChannelSpectrum& spectrum) {
    baseband::spectrum_streaming_start();
 }

-void SearchView::on_show() {
-    baseband::spectrum_streaming_start();
-}
-
-void SearchView::on_hide() {
-    baseband::spectrum_streaming_stop();
-}
-
 void SearchView::on_range_changed() {
-    rf::Frequency slices_span, center_frequency;
+    rf::Frequency slices_span;
+    rf::Frequency center_frequency;
    int64_t offset;
    size_t slice;

-    f_min = field_frequency_min.value();
-    f_max = field_frequency_max.value();
-    search_span = abs(f_max - f_min);
+    // TODO: enforce min < max?
+    search_span = abs(settings_.freq_max - settings_.freq_min);

    if (search_span > SEARCH_SLICE_WIDTH) {
        // ex: 100M~115M (15M span):
@@ -253,14 +343,14 @@ void SearchView::on_range_changed() {
        // offset = 0 + 2.5/2 = 1.25M
        offset = ((search_span - slices_span) / 2) + (SEARCH_SLICE_WIDTH / 2);
        // slice_start = 100M + 1.25M = 101.25M
-        center_frequency = std::min(f_min, f_max) + offset;
+        center_frequency = std::min(settings_.freq_min, settings_.freq_max) + offset;

        for (slice = 0; slice < slices_nb; slice++) {
            slices[slice].center_frequency = center_frequency;
            center_frequency += SEARCH_SLICE_WIDTH;
        }
    } else {
-        slices[0].center_frequency = (f_max + f_min) / 2;
+        slices[0].center_frequency = (settings_.freq_max + settings_.freq_min) / 2;
        receiver_model.set_target_frequency(slices[0].center_frequency);

        slices_nb = 1;
@@ -272,139 +362,16 @@ void SearchView::on_range_changed() {
    slice_counter = 0;
 }

-void SearchView::on_lna_changed(int32_t v_db) {
-    receiver_model.set_lna(v_db);
-}
+void SearchView::add_spectrum_pixel(Color color) {
+    // Is avoiding floats really necessary?
+    bin_skip_acc += bin_skip_frac;
+    if (bin_skip_acc < 0x10000)
+        return;

-void SearchView::on_vga_changed(int32_t v_db) {
-    receiver_model.set_vga(v_db);
-}
+    bin_skip_acc -= 0x10000;

-void SearchView::do_timers() {
-    if (timing_div >= 60) {
-        // ~1Hz
-
-        timing_div = 0;
-
-        // Update scan rate
-        text_rate.set(to_string_dec_uint(search_counter, 3));
-        search_counter = 0;
-    }
-
-    if (timing_div % 12 == 0) {
-        // ~5Hz
-
-        // Update power levels
-        text_mean.set(to_string_dec_uint(mean_power, 3));
-
-        vu_max.set_value(overall_power_max);
-        vu_max.set_mark(mean_power + power_threshold);
-    }
-
-    if (timing_div % 6 == 0) {
-        // ~10Hz
-
-        // Update timing indicator
-        if (locked) {
-            progress_timers.set_max(RELEASE_DELAY);
-            progress_timers.set_value(RELEASE_DELAY - release_timer);
-        } else {
-            progress_timers.set_max(DETECT_DELAY);
-            progress_timers.set_value(detect_timer);
-        }
-
-        // Increment timers
-        if (detect_timer < DETECT_DELAY) detect_timer++;
-        if (release_timer < RELEASE_DELAY) release_timer++;
-
-        if (locked) duration++;
-    }
-
-    timing_div++;
-}
-
-SearchView::SearchView(
-    NavigationView& nav)
-    : nav_(nav) {
-    baseband::run_image(portapack::spi_flash::image_tag_wideband_spectrum);
-
-    add_children({&labels,
-                  &field_frequency_min,
-                  &field_frequency_max,
-                  &field_lna,
-                  &field_vga,
-                  &field_threshold,
-                  &text_mean,
-                  &text_slices,
-                  &text_rate,
-                  &text_infos,
-                  &vu_max,
-                  &progress_timers,
-                  &check_snap,
-                  &options_snap,
-                  &big_display,
-                  &recent_entries_view});
-
-    baseband::set_spectrum(SEARCH_SLICE_WIDTH, 31);
-
-    recent_entries_view.set_parent_rect({0, 28 * 8, 240, 12 * 8});
-    recent_entries_view.on_select = [this, &nav](const SearchRecentEntry& entry) {
-        nav.push<FrequencyKeypadView>(entry.frequency);
-    };
-
-    text_mean.set_style(&Styles::grey);
-    text_slices.set_style(&Styles::grey);
-    text_rate.set_style(&Styles::grey);
-    progress_timers.set_style(&Styles::grey);
-    big_display.set_style(&Styles::grey);
-
-    check_snap.set_value(true);
-    options_snap.set_selected_index(1);  // 12.5kHz
-
-    field_threshold.set_value(80);
-    field_threshold.on_change = [this](int32_t value) {
-        power_threshold = value;
-    };
-
-    field_frequency_min.set_value(receiver_model.target_frequency() - 1000000);
-    field_frequency_min.set_step(100000);
-    field_frequency_min.on_change = [this](rf::Frequency) {
-        this->on_range_changed();
-    };
-    field_frequency_min.on_edit = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.target_frequency() - 1000000);
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->field_frequency_min.set_value(f);
-        };
-    };
-
-    field_frequency_max.set_value(receiver_model.target_frequency() + 1000000);
-    field_frequency_max.set_step(100000);
-    field_frequency_max.on_change = [this](rf::Frequency) {
-        this->on_range_changed();
-    };
-    field_frequency_max.on_edit = [this, &nav]() {
-        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.target_frequency() + 1000000);
-        new_view->on_changed = [this](rf::Frequency f) {
-            this->field_frequency_max.set_value(f);
-        };
-    };
-
-    field_lna.set_value(receiver_model.lna());
-    field_lna.on_change = [this](int32_t v) {
-        this->on_lna_changed(v);
-    };
-
-    field_vga.set_value(receiver_model.vga());
-    field_vga.on_change = [this](int32_t v_db) {
-        this->on_vga_changed(v_db);
-    };
-
-    progress_timers.set_max(DETECT_DELAY);
-
-    on_range_changed();
-
-    receiver_model.enable();
+    if (pixel_index < screen_width)
+        spectrum_row[pixel_index++] = color;
 }

 } /* namespace ui */
@@ -20,14 +20,13 @@
 * Boston, MA 02110-1301, USA.
 */

+#include "app_settings.hpp"
 #include "receiver_model.hpp"
+#include "recent_entries.hpp"
 #include "radio_state.hpp"
-
 #include "spectrum_color_lut.hpp"
-
 #include "ui_receiver.hpp"
 #include "ui_styles.hpp"
-#include "recent_entries.hpp"

 namespace ui {

@@ -95,6 +94,26 @@ class SearchView : public View {
        SEARCH_SLICE_WIDTH /* sampling rate */,
        ReceiverModel::Mode::SpectrumAnalysis};

+    // Settings
+    struct SearchSettings {
+        uint32_t power_threshold = 80;
+        rf::Frequency freq_min = 100'000'000;
+        rf::Frequency freq_max = 400'000'000;
+        bool snap_search = true;
+        uint32_t snap_step = 12'500;
+    };
+    SearchSettings settings_{};
+    app_settings::SettingsManager app_settings_{
+        "rx_search"sv,
+        app_settings::Mode::RX,
+        {
+            {"power_threshold"sv, &settings_.power_threshold},
+            {"freq_min"sv, &settings_.freq_min},
+            {"freq_max"sv, &settings_.freq_max},
+            {"snap_search"sv, &settings_.snap_search},
+            {"snap_step"sv, &settings_.snap_step},
+        }};
+
    struct slice_t {
        rf::Frequency center_frequency;
        uint8_t max_power;
@@ -103,33 +122,36 @@ class SearchView : public View {
        int16_t index;
    } slices[32];

-    uint32_t bin_skip_acc{0}, bin_skip_frac{};
-    uint32_t pixel_index{0};
-    std::array<Color, 240> spectrum_row = {0};
-    ChannelSpectrumFIFO* fifo{nullptr};
-    rf::Frequency f_min{0}, f_max{0};
-    uint8_t detect_timer{0}, release_timer{0}, timing_div{0};
-    uint8_t overall_power_max{0};
-    uint32_t mean_power{0}, mean_acc{0};
-    uint32_t duration{0};
-    uint32_t power_threshold{80};  // Todo: Put this in persistent / settings
-    rf::Frequency slice_start{0};
-    uint8_t slices_nb{0};
-    uint8_t slice_counter{0};
-    int16_t last_bin{0};
-    uint32_t last_slice{0};
-    Coord last_tick_pos{0};
-    rf::Frequency search_span{0}, resolved_frequency{0};
-    uint16_t locked_bin{0};
-    uint8_t search_counter{0};
-    bool locked{false};
+    uint32_t bin_skip_acc = 0;
+    uint32_t bin_skip_frac = 0;
+    uint32_t pixel_index = 0;
+    std::array<Color, 240> spectrum_row{};
+    ChannelSpectrumFIFO* fifo = nullptr;

+    uint8_t detect_timer = 0;
+    uint8_t release_timer = 0;
+    uint8_t timing_div = 0;
+    uint8_t overall_power_max{0};
+    uint32_t mean_power = 0;
+    uint32_t mean_acc = 0;
+    uint32_t duration = 0;
+
+    rf::Frequency slice_start = 0;
+    uint8_t slices_nb = 0;
+    uint8_t slice_counter = 0;
+    int16_t last_bin = 0;
+    uint32_t last_slice = 0;
+    Coord last_tick_pos = 0;
+    rf::Frequency search_span = 0;
+    rf::Frequency resolved_frequency = 0;
+    uint16_t locked_bin = 0;
+    uint8_t search_counter = 0;
+    bool locked = false;
+
+    void do_detection();
+    void do_timers();
    void on_channel_spectrum(const ChannelSpectrum& spectrum);
    void on_range_changed();
-    void do_detection();
-    void on_lna_changed(int32_t v_db);
-    void on_vga_changed(int32_t v_db);
-    void do_timers();
    void add_spectrum_pixel(Color color);

    const RecentEntriesColumns columns{{{"Frequency", 9},
@@ -150,6 +172,7 @@ class SearchView : public View {
        {1 * 8, 1 * 16}};
    FrequencyField field_frequency_max{
        {11 * 8, 1 * 16}};
+
    LNAGainField field_lna{
        {22 * 8, 1 * 16}};
    VGAGainField field_vga{
@@ -191,10 +214,10 @@ class SearchView : public View {
        {17 * 8, 15 * 8},  // Position
        7,                 // Length
        {                  // Options
-         {"25kHz  ", 25000},
-         {"12.5kHz", 12500},
-         {"8.33kHz", 8333},
-         {"2.5kHz", 2500},
+         {"25kHz  ", 25'000},
+         {"12.5kHz", 12'500},
+         {"8.33kHz", 8'333},
+         {"2.5kHz", 2'500},
         {"500Hz", 500}}};

    BigFrequency big_display{
@@ -207,6 +230,7 @@ class SearchView : public View {
            const auto message = *reinterpret_cast<const ChannelSpectrumConfigMessage*>(p);
            this->fifo = message.fifo;
        }};
+
    MessageHandlerRegistration message_handler_frame_sync{
        Message::ID::DisplayFrameSync,
        [this](const Message* const) {
@@ -329,6 +329,30 @@ void run_image(const spi_flash::image_tag_t image_tag) {
    }
 }

+void run_prepared_image(const uint32_t m4_code) {
+    if (baseband_image_running) {
+        chDbgPanic("BBRunning");
+    }
+
+    creg::m4txevent::clear();
+    shared_memory.clear_baseband_ready();
+
+    m4_init_prepared(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() {
    if (!baseband_image_running) {
        return;
@@ -89,6 +89,7 @@ void set_spectrum_painter_config(const uint16_t width, const uint16_t height, bo
 void request_beep();

 void run_image(const portapack::spi_flash::image_tag_t image_tag);
+void run_prepared_image(const uint32_t m4_code);
 void shutdown();

 void spectrum_streaming_start();
@@ -0,0 +1,117 @@
+/*
+ * 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 __BINDER_H__
+#define __BINDER_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_widget.hpp"
+
+namespace ui {
+
+/* Default no-op binding callback. */
+struct NoOp {
+    NoOp() {}
+    template <typename T>
+    void operator()(T) const {}
+};
+
+/* The gist of the bind functions is to bind a control
+ * to a value.
+ *     bind(control, value)
+ *
+ * An optional callback can be specified which will be called
+ * when the control's value is changed.
+ *    bind(control, value, [](auto new_val) { ... });
+ *
+ * Some controls need a reference to the NavigationView so
+ * edit dialogs (like text_prompt) can be launched.
+ *    bind(control, value, nav, [](auto new_val) { ... });
+ *
+ * Be careful with lifetime of captured objects. Most things
+ * are captured by reference so the caller will need to ensure
+ * adequate lifetime of the referenced instances.
+ */
+
+template <typename T, typename Fn = NoOp>
+void bind(Checkbox& check, T& value, Fn fn = Fn{}) {
+    check.set_value(value);
+    check.on_select = [&value, fn](Checkbox&, bool b) {
+        value = b;
+        fn(value);
+    };
+}
+
+template <typename T, typename Fn = NoOp>
+void bind(NumberField& field, T& value, Fn fn = Fn{}) {
+    field.set_value(value);
+    field.on_change = [&value, fn](int32_t v) {
+        value = v;
+        fn(value);
+    };
+}
+
+template <typename T, typename Fn = NoOp>
+void bind(OptionsField& field, T& value, Fn fn = Fn{}) {
+    field.set_by_value(static_cast<int32_t>(value));
+    field.on_change = [&value, fn](size_t, auto v) {
+        value = static_cast<T>(v);
+        fn(value);
+    };
+}
+
+template <typename T, typename Fn = NoOp>
+void bind(FrequencyField& field, T& value, NavigationView& nav, Fn fn = Fn{}) {
+    field.set_value(value);
+    field.on_change = [&value, fn](rf::Frequency f) {
+        value = f;
+        fn(value);
+    };
+    field.on_edit = [&field, &value, &nav]() {
+        auto freq_view = nav.push<FrequencyKeypadView>(value);
+        freq_view->on_changed = [&field](rf::Frequency f) {
+            field.set_value(f);
+        };
+    };
+}
+
+template <typename T, typename Fn = NoOp>
+void bind(TextField& field, T& value, NavigationView& nav, Fn fn = Fn{}) {
+    field.set_text(value);
+    field.on_change = [&value, fn](TextField& tf) {
+        value = tf.get_text();
+        fn(value);
+    };
+    // text_prompt needs a mutable working buffer.
+    // Capture a new string and make the lambda mutable so it can be modified.
+    field.on_select = [&nav, buf = std::string{}](TextField& tf) mutable {
+        buf = tf.get_text();
+        text_prompt(nav, buf, /*max_length*/ 255,
+                    [&tf](std::string& str) {
+                        tf.set_text(str);
+                    });
+    };
+}
+
+}  // namespace ui
+
+#endif /*__BINDER_H__*/
@@ -5645,6 +5645,44 @@ static constexpr Bitmap bitmap_icon_shift{
    {16, 16},
    bitmap_icon_shift_data};

+static constexpr uint8_t bitmap_icon_trim_data[] = {
+    0x10,
+    0x10,
+    0x30,
+    0x12,
+    0x50,
+    0x15,
+    0x50,
+    0x15,
+    0x50,
+    0x15,
+    0x52,
+    0x95,
+    0x56,
+    0xD5,
+    0x5F,
+    0xF5,
+    0x56,
+    0xD5,
+    0x52,
+    0x95,
+    0x50,
+    0x15,
+    0x50,
+    0x15,
+    0x50,
+    0x15,
+    0x90,
+    0x18,
+    0x10,
+    0x10,
+    0x00,
+    0x00,
+};
+static constexpr Bitmap bitmap_icon_trim{
+    {16, 16},
+    bitmap_icon_trim_data};
+
 } /* namespace ui */

 #endif /*__BITMAP_HPP__*/
@@ -59,6 +59,19 @@ void m4_init(const spi_flash::image_tag_t image_tag, const memory::region_t to,
    chDbgPanic("NoImg");
 }

+void m4_init_prepared(const uint32_t m4_code, const bool full_reset) {
+    /* M4 core is assumed to be sleeping with interrupts off, so we can mess
+     * with its address space and RAM without concern.
+     */
+    LPC_CREG->M4MEMMAP = m4_code;
+
+    /* Reset M4 core and optionally all peripherals */
+    LPC_RGU->RESET_CTRL[0] = (full_reset) ? (1 << 1)    // PERIPH_RST
+                                          : (1 << 13);  // M4_RST
+
+    return;
+}
+
 void m4_request_shutdown() {
    baseband::shutdown();
 }
@@ -28,6 +28,7 @@
 #include "spi_image.hpp"

 void m4_init(const portapack::spi_flash::image_tag_t image_tag, const portapack::memory::region_t to, const bool full_reset);
+void m4_init_prepared(const uint32_t m4_code, const bool full_reset);
 void m4_request_shutdown();

 void m0_halt();
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui.hpp"
+#include "ui_afsk_rx.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::afsk_rx {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<AFSKRxView>();
+}
+}  // namespace ui::external_app::afsk_rx
+
+extern "C" {
+
+__attribute__((section(".external_app.app_afsk_rx.application_information"), used)) application_information_t _application_information_afsk_rx = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::afsk_rx::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "AFSK",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0xF8,
+        0x1F,
+        0x04,
+        0x20,
+        0x02,
+        0x40,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xAB,
+        0xDF,
+        0xAB,
+        0xDF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0xFF,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::RX,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_afsk_rx */ {'P', 'A', 'F', 'R'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
@@ -32,20 +32,21 @@

 using namespace portapack;
 using namespace modems;
+using namespace ui;
+
+namespace ui::external_app::afsk_rx {

 void AFSKLogger::log_raw_data(const std::string& data) {
    log_file.write_entry(data);
 }

-namespace ui {
-
 void AFSKRxView::focus() {
    field_frequency.focus();
 }

 AFSKRxView::AFSKRxView(NavigationView& nav)
    : nav_{nav} {
-    baseband::run_image(portapack::spi_flash::image_tag_afsk_rx);
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());

    add_children({&rssi,
                  &channel,
@@ -147,4 +148,4 @@ AFSKRxView::~AFSKRxView() {
    baseband::shutdown();
 }

-} /* namespace ui */
+}  // namespace ui::external_app::afsk_rx
@@ -33,6 +33,10 @@
 #include "log_file.hpp"
 #include "utility.hpp"

+using namespace ui;
+
+namespace ui::external_app::afsk_rx {
+
 class AFSKLogger {
   public:
    Optional<File::Error> append(const std::string& filename) {
@@ -45,8 +49,6 @@ class AFSKLogger {
    LogFile log_file{};
 };

-namespace ui {
-
 class AFSKRxView : public View {
   public:
    AFSKRxView(NavigationView& nav);
@@ -116,6 +118,6 @@ class AFSKRxView : public View {
        }};
 };

-} /* namespace ui */
+}  // namespace ui::external_app::afsk_rx

 #endif /*__UI_AFSK_RX_H__*/
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui.hpp"
+#include "ui_calculator.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::calculator {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<CalculatorView>();
+}
+}  // namespace ui::external_app::calculator
+
+extern "C" {
+
+__attribute__((section(".external_app.app_calculator.application_information"), used)) application_information_t _application_information_calculator = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::calculator::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Calculator",
+    /*.bitmap_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,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::UTILITIES,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_noop */ {'\0', '\0', '\0', '\0'},  // optional
+    /*.m4_app_offset = */ 0x00000000,                                                  // will be filled at compile time
+};
+}
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui_calculator.hpp"
+
+using namespace ui;
+
+namespace ui::external_app::calculator {
+
+uint8_t current_key = 255;
+char display_string[10];
+uint8_t fgm = 0;
+
+// interface to external code
+unsigned int mp;
+
+char CHARMAP[] = {
+    '0',
+    '1',
+    '2',
+    '3',
+    '4',
+    '5',
+    '6',
+    '7',
+    '8',
+    '9',
+    'A',
+    'B',
+    'C',
+    'D',
+    'E',
+    'F',
+    'H',
+    'I',
+    'L',
+    'M',
+    'N',
+    'O',
+    'P',
+    'R',
+    'S',
+    'T',
+    'U',
+    'V',
+    'c',
+    's',
+    't',
+    ' ',
+    '.',
+    '*',
+    '+',
+    '-',
+    '/',
+    '!',
+    '<',
+    '=',
+    '>',
+    '^',
+    'f',
+    'n',
+    'p',
+    's',
+    'm',
+    'w',
+
+};
+
+void printcat(uint8_t c, uint8_t x) {  // Print char c at position x
+    display_string[x] = CHARMAP[c];
+}
+uint8_t getkey(void) {  // Read keypad
+    return current_key;
+}
+
+#include "ivt.hpp"
+
+void step() {
+    loop();
+}
+
+void CalculatorView::focus() {
+    button_F.focus();
+}
+
+CalculatorView::CalculatorView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({&button_F,
+                  &button_7,
+                  &button_8,
+                  &button_9,
+                  &button_E,
+                  &button_4,
+                  &button_5,
+                  &button_6,
+                  &button_N,
+                  &button_1,
+                  &button_2,
+                  &button_3,
+                  &button_C,
+                  &button_0,
+                  &button_P,
+                  &button_D,
+                  &console});
+
+    button_F.on_select = [&nav, this](Button&) { on_button_press(0); };
+    button_7.on_select = [&nav, this](Button&) { on_button_press(1); };
+    button_8.on_select = [&nav, this](Button&) { on_button_press(2); };
+    button_9.on_select = [&nav, this](Button&) { on_button_press(3); };
+
+    button_E.on_select = [&nav, this](Button&) { on_button_press(4); };
+    button_4.on_select = [&nav, this](Button&) { on_button_press(5); };
+    button_5.on_select = [&nav, this](Button&) { on_button_press(6); };
+    button_6.on_select = [&nav, this](Button&) { on_button_press(7); };
+
+    button_N.on_select = [&nav, this](Button&) { on_button_press(8); };
+    button_1.on_select = [&nav, this](Button&) { on_button_press(9); };
+    button_2.on_select = [&nav, this](Button&) { on_button_press(10); };
+    button_3.on_select = [&nav, this](Button&) { on_button_press(11); };
+
+    button_C.on_select = [&nav, this](Button&) { on_button_press(12); };
+    button_0.on_select = [&nav, this](Button&) { on_button_press(13); };
+    button_P.on_select = [&nav, this](Button&) { on_button_press(14); };
+    button_D.on_select = [&nav, this](Button&) { on_button_press(15); };
+}
+
+void CalculatorView::on_button_press(uint8_t button) {
+    auto pre_fgm = fgm;
+    for (int i = 0; i < 10; i++)
+        display_string[i] = ' ';
+
+    current_key = button;
+    step();
+
+    do {
+        current_key = 255;
+        step();
+    } while (mp);
+
+    std::string d(&display_string[0], 10);
+
+    if (pre_fgm && button != 0) {
+        console.write("      ");
+        switch (button) {
+            case 1:
+                console.write("SUM+");
+                break;
+            case 2:
+                console.write("PRG");
+                break;
+            case 3:
+                console.write("/");
+                break;
+
+            case 4:
+                console.write("SWAP");
+                break;
+            case 5:
+                console.write("DICT");
+                break;
+            case 6:
+                console.write("USR");
+                break;
+            case 7:
+                console.write("*");
+                break;
+
+            case 8:
+                console.write("ROT");
+                break;
+            case 9:
+                console.write("RCL");
+                break;
+            case 10:
+                console.write("STO");
+                break;
+            case 11:
+                console.write("-");
+                break;
+
+            case 12:
+                console.write("CA");
+                break;
+            case 13:
+                console.write("PI");
+                break;
+            case 14:
+                console.write("INT");
+                break;
+            case 15:
+                console.write("+");
+                break;
+        }
+        console.writeln(d);
+    } else if (button == 15) {
+        console.write("\r");
+        console.writeln(d);
+    } else {
+        console.write("\r");
+        console.write(d);
+    }
+
+    update_button_labels();
+}
+
+void CalculatorView::update_button_labels() {
+    if (fgm) {
+        button_F.set_text("MENU");
+        button_7.set_text("SUM+");
+        button_8.set_text("PRG");
+        button_9.set_text("/");
+
+        button_E.set_text("SWAP");
+        button_4.set_text("DICT");
+        button_5.set_text("USR");
+        button_6.set_text("*");
+
+        button_N.set_text("ROT");
+        button_1.set_text("RCL");
+        button_2.set_text("STO");
+        button_3.set_text("-");
+
+        button_C.set_text("CA");
+        button_0.set_text("PI");
+        button_P.set_text("INT");
+        button_D.set_text("+");
+
+    } else {
+        button_F.set_text("F");
+        button_7.set_text("7");
+        button_8.set_text("8");
+        button_9.set_text("9");
+
+        button_E.set_text("E");
+        button_4.set_text("4");
+        button_5.set_text("5");
+        button_6.set_text("6");
+
+        button_N.set_text("N");
+        button_1.set_text("1");
+        button_2.set_text("2");
+        button_3.set_text("3");
+
+        button_C.set_text("C");
+        button_0.set_text("0");
+        button_P.set_text(".");
+        button_D.set_text("D");
+    }
+}
+
+}  // namespace ui::external_app::calculator
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2014 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_calculator_H__
+#define __UI_calculator_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "log_file.hpp"
+#include "utility.hpp"
+
+using namespace ui;
+
+namespace ui::external_app::calculator {
+
+class CalculatorView : public View {
+   public:
+    CalculatorView(NavigationView& nav);
+
+    void focus() override;
+
+    std::string title() const override { return "Calculator"; };
+
+   private:
+    NavigationView& nav_;
+
+    Button button_F{{0 * 8, 11 * 16, 6 * 8, 16 + 8}, "F"};
+    Button button_7{{8 * 8, 11 * 16, 6 * 8, 16 + 8}, "7"};
+    Button button_8{{16 * 8, 11 * 16, 6 * 8, 16 + 8}, "8"};
+    Button button_9{{24 * 8, 11 * 16, 6 * 8, 16 + 8}, "9"};
+    Button button_E{{0 * 8, 13 * 16, 6 * 8, 16 + 8}, "E"};
+    Button button_4{{8 * 8, 13 * 16, 6 * 8, 16 + 8}, "4"};
+    Button button_5{{16 * 8, 13 * 16, 6 * 8, 16 + 8}, "5"};
+    Button button_6{{24 * 8, 13 * 16, 6 * 8, 16 + 8}, "6"};
+    Button button_N{{0 * 8, 15 * 16, 6 * 8, 16 + 8}, "N"};
+    Button button_1{{8 * 8, 15 * 16, 6 * 8, 16 + 8}, "1"};
+    Button button_2{{16 * 8, 15 * 16, 6 * 8, 16 + 8}, "2"};
+    Button button_3{{24 * 8, 15 * 16, 6 * 8, 16 + 8}, "3"};
+    Button button_C{{0 * 8, 17 * 16, 6 * 8, 16 + 8}, "C"};
+    Button button_0{{8 * 8, 17 * 16, 6 * 8, 16 + 8}, "0"};
+    Button button_P{{16 * 8, 17 * 16, 6 * 8, 16 + 8}, "."};
+    Button button_D{{24 * 8, 17 * 16, 6 * 8, 16 + 8}, "D"};
+
+    Console console{
+        {0 * 8, 0 * 16, screen_width, 10 * 16}};
+
+    void on_button_press(uint8_t button);
+    void update_button_labels();
+};
+
+}  // namespace ui::external_app::calculator
+
+#endif /*__UI_calculator_H__*/
@@ -0,0 +1,20 @@
+set(EXTCPPSRC
+
+	#pacman
+	external/pacman/main.cpp
+	external/pacman/ui_pacman.cpp
+	
+	#afsk_rx
+	external/afsk_rx/main.cpp
+	external/afsk_rx/ui_afsk_rx.cpp
+
+	#calculator
+	external/calculator/main.cpp
+	external/calculator/ui_calculator.cpp
+)
+
+set(EXTAPPLIST
+	pacman
+	afsk_rx
+	calculator
+)
@@ -0,0 +1,44 @@
+/*
+    Copyright (C) 2023 Bernd Herzog
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+MEMORY
+{
+    /* external apps: regions can't overlap so addresses are corrected after build */
+    ram_external_app_pacman     (rwx) : org = 0xEEE90000, len = 32k
+    ram_external_app_afsk_rx    (rwx) : org = 0xEEEA0000, len = 32k
+    ram_external_app_calculator (rwx) : org = 0xEEEB0000, len = 32k
+}
+
+SECTIONS
+{
+    .external_app_pacman : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_pacman.application_information));
+        *(*ui*external_app*pacman*);
+    } > ram_external_app_pacman
+
+    .external_app_afsk_rx : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_afsk_rx.application_information));
+        *(*ui*external_app*afsk_rx*);
+    } > ram_external_app_afsk_rx
+
+    .external_app_calculator : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_calculator.application_information));
+        *(*ui*external_app*calculator*);
+    } > ram_external_app_calculator
+}
@@ -0,0 +1,66 @@
+/******************************************************************************/
+/*                                                                            */
+/*  PACMAN GAME FOR ARDUINO DUE                                               */
+/*                                                                            */
+/******************************************************************************/
+/*  Copyright (c) 2014  Dr. NCX (mirracle.mxx@gmail.com)                      */
+/*                                                                            */
+/* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL              */
+/* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED              */
+/* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR    */
+/* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES      */
+/* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,     */
+/* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,     */
+/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS        */
+/* SOFTWARE.                                                                  */
+/*                                                                            */
+/*  MIT license, all text above must be included in any redistribution.       */
+
+// #include "ili9328.h"
+
+typedef uint16_t ushort;
+
+#define C16(_rr, _gg, _bb) ((ushort)(((_rr & 0xF8) << 8) | ((_gg & 0xFC) << 3) | ((_bb & 0xF8) >> 3)))
+
+uint16_t _paletteW[] =
+    {
+        C16(0, 0, 0),
+        C16(255, 0, 0),     // 1 red
+        C16(222, 151, 81),  // 2 brown
+        C16(255, 0, 255),   // 3 pink
+
+        C16(0, 0, 0),
+        C16(0, 255, 255),   // 5 cyan
+        C16(71, 84, 255),   // 6 mid blue
+        C16(255, 184, 81),  // 7 lt brown
+
+        C16(0, 0, 0),
+        C16(255, 255, 0),  // 9 yellow
+        C16(0, 0, 0),
+        C16(33, 33, 255),  // 11 blue
+
+        C16(0, 255, 0),      // 12 green
+        C16(71, 84, 174),    // 13 aqua
+        C16(255, 184, 174),  // 14 lt pink
+        C16(222, 222, 255),  // 15 whiteish
+};
+
+void drawIndexedmap(uint8_t* indexmap, int16_t x, uint16_t y) {
+    ui::Painter painter;
+
+    byte i = 0;
+    word color = (word)_paletteW[indexmap[0]];
+    for (byte tmpY = 0; tmpY < 8; tmpY++) {
+        byte width = 1;
+        for (byte tmpX = 0; tmpX < 8; tmpX++) {
+            word next_color = (word)_paletteW[indexmap[++i]];
+            if ((color != next_color && width >= 1) || tmpX == 7) {
+                painter.draw_hline({x + tmpX - width + 1, y + tmpY}, width, ui::Color(color));
+
+                color = next_color;
+                width = 0;
+            }
+            width++;
+        }
+    }
+}
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui.hpp"
+#include "ui_pacman.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::pacman {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<PacmanView>();
+}
+}  // namespace ui::external_app::pacman
+
+extern "C" {
+
+__attribute__((section(".external_app.app_pacman.application_information"), used)) application_information_t _application_information_pacman = {
+    /*.memory_location = */ (uint8_t*)0x00000000,  // will be filled at compile time
+    /*.externalAppEntry = */ ui::external_app::pacman::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Pac-Man",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0xC0,
+        0x07,
+        0xE0,
+        0x0F,
+        0xF0,
+        0x1F,
+        0xF8,
+        0x07,
+        0xF8,
+        0x01,
+        0x78,
+        0x00,
+        0xF8,
+        0x01,
+        0xF8,
+        0x07,
+        0xF0,
+        0x1F,
+        0xE0,
+        0x0F,
+        0xC0,
+        0x07,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::UTILITIES,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_noop */ {'\0', '\0', '\0', '\0'},  // optional
+    /*.m4_app_offset = */ 0x00000000,                                                  // will be filled at compile time
+};
+}
@@ -0,0 +1,50 @@
+#include "ui_pacman.hpp"
+#include "irq_controls.hpp"
+
+namespace ui::external_app::pacman {
+
+#pragma GCC diagnostic push
+// external code, so ignore warnings
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#pragma GCC diagnostic ignored "-Wreturn-type"
+#pragma GCC diagnostic ignored "-Weffc++"
+#include "playfield.hpp"
+#pragma GCC diagnostic pop
+
+Playfield _game;
+
+PacmanView::PacmanView(NavigationView& nav)
+    : nav_(nav) {
+    add_children({&dummy});
+}
+
+void PacmanView::focus() {
+    dummy.focus();
+}
+
+void PacmanView::paint(Painter& painter) {
+    (void)painter;
+
+    if (!initialized) {
+        initialized = true;
+        _game.Init();
+    }
+
+    auto switches_debounced = get_switches_state().to_ulong();
+
+    but_RIGHT = (switches_debounced & 0x01) == 0x01;
+    but_LEFT = (switches_debounced & 0x02) == 0x02;
+    but_DOWN = (switches_debounced & 0x04) == 0x04;
+    but_UP = (switches_debounced & 0x08) == 0x08;
+    but_A = (switches_debounced & 0x10) == 0x10;
+
+    _game.Step();
+}
+
+void PacmanView::frame_sync() {
+    set_dirty();
+}
+
+}  // namespace ui::external_app::pacman
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_PACMAN_H__
+#define __UI_PACMAN_H__
+
+#include "ui_navigation.hpp"
+#include "event_m0.hpp"
+#include "message.hpp"
+
+namespace ui::external_app::pacman {
+
+class PacmanView : public View {
+   public:
+    PacmanView(NavigationView& nav);
+
+    void focus() override;
+
+    std::string title() const override { return "Pac-Man"; };
+
+    void paint(Painter& painter) override;
+    void frame_sync();
+
+   private:
+    bool initialized = false;
+    NavigationView& nav_;
+
+    Button dummy{
+        {240, 0, 0, 0},
+        ""};
+
+    MessageHandlerRegistration message_handler_sample{
+        Message::ID::DisplayFrameSync,
+        [this](const Message* const) {
+            this->frame_sync();
+        }};
+};
+
+}  // namespace ui::external_app::pacman
+
+#endif /*__UI_PACMAN_H__*/
@@ -325,6 +325,14 @@ FATTimestamp file_created_date(const std::filesystem::path& file_path) {
    return {filinfo.fdate, filinfo.ftime};
 }

+std::filesystem::filesystem_error file_update_date(const std::filesystem::path& file_path, FATTimestamp timestamp) {
+    FILINFO filinfo{};
+
+    filinfo.fdate = timestamp.FAT_date;
+    filinfo.ftime = timestamp.FAT_time;
+    return f_utime(reinterpret_cast<const TCHAR*>(file_path.c_str()), &filinfo);
+}
+
 std::filesystem::filesystem_error make_new_file(
    const std::filesystem::path& file_path) {
    File f;
@@ -270,6 +270,7 @@ std::filesystem::filesystem_error rename_file(const std::filesystem::path& file_
 std::filesystem::filesystem_error copy_file(const std::filesystem::path& file_path, const std::filesystem::path& dest_path);

 FATTimestamp file_created_date(const std::filesystem::path& file_path);
+std::filesystem::filesystem_error file_update_date(const std::filesystem::path& file_path, FATTimestamp timestamp);
 std::filesystem::filesystem_error make_new_file(const std::filesystem::path& file_path);
 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);
@@ -122,7 +122,7 @@ void MAX2837::init() {

    _map.r.lpf_1.LPF_EN = 1;      /* Enable low-pass filter */
    _map.r.lpf_1.ModeCtrl = 0b01; /* Rx LPF */
-    _map.r.lpf_1.FT = 0b0000;     /* 5MHz LPF */
+    _map.r.lpf_1.FT = 0b0000;     /* 1,75MHz LPF */

    _map.r.spi_en.EN_SPI = 1; /* enable chip functions when ENABLE pin set */

@@ -233,10 +233,28 @@ void MAX2837::set_vga_gain(const int_fast8_t db) {
    flush();
 }

-void MAX2837::set_lpf_rf_bandwidth(const uint32_t bandwidth_minimum) {
+void MAX2837::set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) {
+    _map.r.lpf_1.ModeCtrl = 0b01; /* Address reg 2, D3-D2, Set mode lowpass filter block to Rx LPF . Active when Address 6 D<9> = 1 */
    _map.r.lpf_1.FT = filter::bandwidth_ordinal(bandwidth_minimum);
-    _dirty[Register::LPF_1] = 1;
-    flush();
+    flush_one(Register::LPF_1);
+
+    _map.r.vga_3_rx_top.LPF_MODE_SEL = 1; /* Address 6 reg, D9 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 2 D3:D2*/
+    flush_one(Register::VGA_3_RX_TOP);
+
+    _map.r.vga_3_rx_top.LPF_MODE_SEL = 0; /* Leave LPF_MODE_SEL 0 = Normal operation */
+    flush_one(Register::VGA_3_RX_TOP);
+}
+
+void MAX2837::set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) {
+    _map.r.lpf_1.ModeCtrl = 0b10; /* Address 2 reg, D3-D2, Set mode lowpass filter block to Tx LPF . Active when Address 6 D<9> = 1 */
+    _map.r.lpf_1.FT = filter::bandwidth_ordinal(bandwidth_minimum);
+    flush_one(Register::LPF_1);
+
+    _map.r.vga_3_rx_top.LPF_MODE_SEL = 1; /* Address 6 reg, D9 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 2 D3:D2*/
+    flush_one(Register::VGA_3_RX_TOP);
+
+    _map.r.vga_3_rx_top.LPF_MODE_SEL = 0; /* Leave LPF_MODE_SEL 0 = Normal operation */
+    flush_one(Register::VGA_3_RX_TOP);
 }

 bool MAX2837::set_frequency(const rf::Frequency lo_frequency) {
@@ -783,7 +783,8 @@ class MAX2837 : public MAX283x {
    void set_tx_vga_gain(const int_fast8_t db) override;
    void set_lna_gain(const int_fast8_t db) override;
    void set_vga_gain(const int_fast8_t db) override;
-    void set_lpf_rf_bandwidth(const uint32_t bandwidth_minimum) override;
+    void set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) override;
+    void set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) override;
 #if 0
 	void rx_cal() {
 		_map.r.spi_en.EN_SPI = 1;
@@ -278,10 +278,32 @@ void MAX2839::set_vga_gain(const int_fast8_t db) {
    configure_rx_gain();
 }

-void MAX2839::set_lpf_rf_bandwidth(const uint32_t bandwidth_minimum) {
+void MAX2839::set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) {
+    _map.r.lpf_vga_1.ModeCtrl = 0b01; /* Address reg 5, D9-D8, Set mode lowpass filter block to Rx LPF . Active when Address 8 D<2> = 1 */
+    flush_one(Register::LPF_VGA_1);
+
+    _map.r.rx_top_1.LPF_MODE_SEL = 1; /* Address 8 reg, D2 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 5 D<9:8> */
+    flush_one(Register::RX_TOP_1);
+
    _map.r.lpf.FT = filter::bandwidth_ordinal(bandwidth_minimum);
-    _dirty[Register::LPF] = 1;
-    flush();
+    flush_one(Register::LPF);
+
+    _map.r.rx_top_1.LPF_MODE_SEL = 0; /* Address 8 reg, D2 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 5 D<9:8> */
+    flush_one(Register::RX_TOP_1);    /* Leave LPF_MODE_SEL 0 = Normal operation */
+}
+
+void MAX2839::set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) {
+    _map.r.lpf_vga_1.ModeCtrl = 0b10; /* Address reg 5, D9-D8, Set mode lowpass filter block to Tx LPF . Active when Address 8 D<2> = 1 */
+    flush_one(Register::LPF_VGA_1);
+
+    _map.r.rx_top_1.LPF_MODE_SEL = 1; /* Address 8 reg, D2 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 5 D<9:8> */
+    flush_one(Register::RX_TOP_1);
+
+    _map.r.lpf.FT = filter::bandwidth_ordinal(bandwidth_minimum);
+    flush_one(Register::LPF);
+
+    _map.r.rx_top_1.LPF_MODE_SEL = 0; /* Address 8 reg, D2 bit:LPF mode mux, LPF_MODE_SEL 0 = Normal operation, 1 = Operating mode is programmed Address 5 D<9:8> */
+    flush_one(Register::RX_TOP_1);    /* Leave LPF_MODE_SEL 0 = Normal operation */
 }

 bool MAX2839::set_frequency(const rf::Frequency lo_frequency) {
@@ -686,7 +686,8 @@ class MAX2839 : public MAX283x {
    void set_tx_vga_gain(const int_fast8_t db) override;
    void set_lna_gain(const int_fast8_t db) override;
    void set_vga_gain(const int_fast8_t db) override;
-    void set_lpf_rf_bandwidth(const uint32_t bandwidth_minimum) override;
+    void set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum) override;
+    void set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum) override;
    bool set_frequency(const rf::Frequency lo_frequency) override;
    void set_rx_lo_iq_calibration(const size_t v) override;
    void set_rx_buff_vcm(const size_t v) override;
@@ -123,7 +123,8 @@ class MAX283x {
    virtual void set_tx_vga_gain(const int_fast8_t db);
    virtual void set_lna_gain(const int_fast8_t db);
    virtual void set_vga_gain(const int_fast8_t db);
-    virtual void set_lpf_rf_bandwidth(const uint32_t bandwidth_minimum);
+    virtual void set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum);
+    virtual void set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum);

    virtual bool set_frequency(const rf::Frequency lo_frequency);

@@ -232,8 +232,12 @@ void set_tx_gain(const int_fast8_t db) {
    second_if->set_tx_vga_gain(db);
 }

-void set_baseband_filter_bandwidth(const uint32_t bandwidth_minimum) {
-    second_if->set_lpf_rf_bandwidth(bandwidth_minimum);
+void set_baseband_filter_bandwidth_rx(const uint32_t bandwidth_minimum) {
+    second_if->set_lpf_rf_bandwidth_rx(bandwidth_minimum);
+}
+
+void set_baseband_filter_bandwidth_tx(const uint32_t bandwidth_minimum) {
+    second_if->set_lpf_rf_bandwidth_tx(bandwidth_minimum);
 }

 void set_baseband_rate(const uint32_t rate) {
@@ -50,7 +50,8 @@ void set_rf_amp(const bool rf_amp);
 void set_lna_gain(const int_fast8_t db);
 void set_vga_gain(const int_fast8_t db);
 void set_tx_gain(const int_fast8_t db);
-void set_baseband_filter_bandwidth(const uint32_t bandwidth_minimum);
+void set_baseband_filter_bandwidth_rx(const uint32_t bandwidth_minimum);
+void set_baseband_filter_bandwidth_tx(const uint32_t bandwidth_minimum);
 void set_baseband_rate(const uint32_t rate);
 void set_antenna_bias(const bool on);

@@ -270,7 +270,7 @@ void ReceiverModel::update_tuning_frequency() {
 }

 void ReceiverModel::update_baseband_bandwidth() {
-    radio::set_baseband_filter_bandwidth(baseband_bandwidth());
+    radio::set_baseband_filter_bandwidth_rx(baseband_bandwidth());
 }

 void ReceiverModel::update_sampling_rate() {
@@ -139,7 +139,7 @@ void TransmitterModel::update_tuning_frequency() {
 }

 void TransmitterModel::update_baseband_bandwidth() {
-    radio::set_baseband_filter_bandwidth(baseband_bandwidth());
+    radio::set_baseband_filter_bandwidth_tx(baseband_bandwidth());
 }

 void TransmitterModel::update_sampling_rate() {
@@ -116,6 +116,12 @@ void BtnGridView::add_items(std::initializer_list<GridItem> new_items) {
    update_items();
 }

+void BtnGridView::add_item(GridItem new_item) {
+    menu_items.push_back(new_item);
+
+    update_items();
+}
+
 void BtnGridView::update_items() {
    size_t i = 0;

@@ -54,6 +54,7 @@ class BtnGridView : public View {
    ~BtnGridView();

    void add_items(std::initializer_list<GridItem> new_items);
+    void add_item(GridItem new_item);
    void set_max_rows(int rows);
    int rows();
    void clear();
@@ -0,0 +1,139 @@
+#include "ui_external_items_menu_loader.hpp"
+
+#include "sd_card.hpp"
+
+namespace ui {
+
+/* static */ std::vector<DynamicBitmap<16, 16>> ExternalItemsMenuLoader::bitmaps;
+
+/* static */ std::vector<GridItem> ExternalItemsMenuLoader::load_external_items(app_location_t app_location, NavigationView& nav) {
+    bitmaps.clear();
+
+    std::vector<GridItem> external_apps;
+
+    if (sd_card::status() != sd_card::Status::Mounted)
+        return external_apps;
+
+    for (const auto& entry : std::filesystem::directory_iterator(u"APPS", u"*.ppma")) {
+        auto filePath = u"/APPS/" + entry.path();
+        File app;
+
+        auto openError = app.open(filePath);
+        if (openError)
+            continue;
+
+        application_information_t application_information = {};
+
+        auto readResult = app.read(&application_information, sizeof(application_information_t));
+        if (!readResult)
+            continue;
+
+        if (application_information.menu_location != app_location)
+            continue;
+
+        if (application_information.header_version != CURRENT_HEADER_VERSION)
+            continue;
+
+        bool versionMatches = VERSION_MD5 == application_information.app_version;
+
+        GridItem gridItem = {};
+        gridItem.text = reinterpret_cast<char*>(&application_information.app_name[0]);
+
+        if (versionMatches) {
+            gridItem.color = Color((uint16_t)application_information.icon_color);
+
+            auto dyn_bmp = DynamicBitmap<16, 16>{application_information.bitmap_data};
+            gridItem.bitmap = dyn_bmp.bitmap();
+            bitmaps.push_back(std::move(dyn_bmp));
+
+            gridItem.on_select = [&nav, app_location, filePath]() {
+                run_external_app(nav, filePath);
+            };
+        } else {
+            gridItem.color = Color::light_grey();
+
+            gridItem.bitmap = &bitmap_sd_card_error;
+
+            gridItem.on_select = [&nav]() {
+                nav.display_modal("Error", "The .ppma file in your APPS\nfolder is outdated. Please\nupdate your SD Card content.");
+            };
+        }
+
+        external_apps.push_back(gridItem);
+    }
+
+    return external_apps;
+}
+
+/* static */ void ExternalItemsMenuLoader::run_external_app(ui::NavigationView& nav, std::filesystem::path filePath) {
+    File app;
+
+    auto openError = app.open(filePath);
+    if (openError)
+        chDbgPanic("file gone");
+
+    application_information_t application_information = {};
+
+    auto readResult = app.read(&application_information, sizeof(application_information_t));
+
+    if (!readResult)
+        chDbgPanic("no data");
+
+    app.seek(0);
+
+    if (application_information.m4_app_offset != 0) {
+        // copy application image
+        for (size_t file_read_index = 0; file_read_index < application_information.m4_app_offset; file_read_index += std::filesystem::max_file_block_size) {
+            auto bytes_to_read = std::filesystem::max_file_block_size;
+            if (file_read_index + std::filesystem::max_file_block_size > application_information.m4_app_offset)
+                bytes_to_read = application_information.m4_app_offset - file_read_index;
+
+            if (bytes_to_read == 0)
+                break;
+
+            readResult = app.read(&application_information.memory_location[file_read_index], bytes_to_read);
+            if (!readResult)
+                chDbgPanic("read error");
+
+            if (readResult.value() < std::filesystem::max_file_block_size)
+                break;
+        }
+
+        // copy baseband image
+        for (size_t file_read_index = application_information.m4_app_offset;; file_read_index += readResult.value()) {
+            size_t bytes_to_read = std::filesystem::max_file_block_size;
+
+            // not aligned
+            if ((file_read_index % std::filesystem::max_file_block_size) != 0)
+                bytes_to_read = std::filesystem::max_file_block_size - (file_read_index % std::filesystem::max_file_block_size);
+
+            if (bytes_to_read == 0)
+                break;
+
+            auto target_memory = reinterpret_cast<void*>(portapack::memory::map::m4_code.base() + file_read_index - application_information.m4_app_offset);
+
+            readResult = app.read(target_memory, bytes_to_read);
+            if (!readResult)
+                chDbgPanic("read error #2");
+
+            if (readResult.value() != bytes_to_read)
+                break;
+        }
+    } else {
+        // copy application image
+        for (size_t file_read_index = 0; file_read_index < 80 * std::filesystem::max_file_block_size; file_read_index += std::filesystem::max_file_block_size) {
+            auto bytes_to_read = std::filesystem::max_file_block_size;
+
+            readResult = app.read(&application_information.memory_location[file_read_index], bytes_to_read);
+            if (!readResult)
+                chDbgPanic("read error #3");
+
+            if (readResult.value() < std::filesystem::max_file_block_size)
+                break;
+        }
+    }
+
+    application_information.externalAppEntry(nav);
+}
+
+}  // namespace ui
@@ -0,0 +1,66 @@
+
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __EXTERNAL_ITEMS_MENU_LOADER_H__
+#define __EXTERNAL_ITEMS_MENU_LOADER_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+#include "file.hpp"
+
+namespace ui {
+
+template <size_t Width, size_t Height>
+class DynamicBitmap {
+   public:
+    static constexpr size_t buffer_size = Width * Height / (sizeof(uint8_t) * 8);  // one bit per pixel
+
+    DynamicBitmap(const uint8_t data[buffer_size])
+        : _buffer(buffer_size, 0),
+          _bitmap{new Bitmap{{Width, Height}, &_buffer[0]}} {
+        memcpy(&_buffer[0], data, buffer_size);
+    }
+
+    const Bitmap* bitmap() { return _bitmap.get(); }
+
+   private:
+    // Allocating both members so the class is movable without invalidation.
+    std::vector<uint8_t> _buffer;
+    std::unique_ptr<Bitmap> _bitmap;
+};
+
+class ExternalItemsMenuLoader {
+   public:
+    static std::vector<GridItem> load_external_items(app_location_t, NavigationView&);
+    ExternalItemsMenuLoader() = delete;
+
+   private:
+    static std::vector<DynamicBitmap<16, 16>> bitmaps;
+
+    static void run_external_app(ui::NavigationView&, std::filesystem::path);
+};
+
+}  // namespace ui
+
+#endif /*__EXTERNAL_ITEMS_MENU_LOADER_H__*/
@@ -34,7 +34,6 @@
 #include "ui_about_simple.hpp"
 #include "ui_adsb_rx.hpp"
 #include "ui_adsb_tx.hpp"
-#include "ui_afsk_rx.hpp"
 #include "ui_aprs_rx.hpp"
 #include "ui_aprs_tx.hpp"
 #include "ui_bht_tx.hpp"
@@ -80,6 +79,7 @@
 #include "ui_touchtunes.hpp"
 #include "ui_view_wav.hpp"
 #include "ui_whipcalc.hpp"
+#include "ui_external_items_menu_loader.hpp"

 // #include "acars_app.hpp"
 #include "ais_app.hpp"
@@ -159,6 +159,8 @@ SystemStatusView::SystemStatusView(
        &status_icons,
    });

+    rtc_battery_workaround();
+
    if (pmem::should_use_sdcard_for_pmem()) {
        pmem::load_persistent_settings_from_file();
    }
@@ -360,6 +362,55 @@ void SystemStatusView::on_title() {
        nav_.pop();
 }

+void SystemStatusView::rtc_battery_workaround() {
+    if (sd_card::status() != sd_card::Status::Mounted)
+        return;
+
+    uint16_t year;
+    uint8_t month;
+    uint8_t day;
+    FATTimestamp timestamp;
+    rtc::RTC datetime;
+
+    rtcGetTime(&RTCD1, &datetime);
+
+    // if year is 0000, assume RTC battery is dead
+    if (datetime.year() == 0) {
+        // if timestamp file is present, use it's date and add 1 day
+        if (std::filesystem::file_exists(DATE_FILEFLAG)) {
+            timestamp = file_created_date(DATE_FILEFLAG);
+
+            year = (timestamp.FAT_date >> 9) + 1980;
+            month = (timestamp.FAT_date >> 5) & 0xF;
+            day = timestamp.FAT_date & 0x1F;
+
+            // bump to next month at 28 days for simplicity
+            if (++day > 28) {
+                day = 1;
+                if (++month > 12) {
+                    month = 1;
+                    ++year;
+                }
+            }
+        } else {
+            make_new_file(DATE_FILEFLAG);
+
+            year = 1980;
+            month = 1;
+            day = 1;
+        }
+
+        // update RTC (keeps ticking while powered on regardless of RTC battery condition)
+        rtc::RTC new_datetime{year, month, day, datetime.hour(), datetime.minute(), datetime.second()};
+        rtcSetTime(&RTCD1, &new_datetime);
+
+        // update file date
+        timestamp.FAT_date = ((year - 1980) << 9) | ((uint16_t)month << 5) | day;
+        timestamp.FAT_time = 0;
+        file_update_date(DATE_FILEFLAG, timestamp);
+    }
+}
+
 /* Information View *****************************************************/

 InformationView::InformationView(
@@ -376,11 +427,8 @@ InformationView::InformationView(
                  &ltime});

    version.set_style(&style_infobar);
-
-    ltime.set_hide_clock(pmem::hide_clock());
    ltime.set_style(&style_infobar);
-    ltime.set_seconds_enabled(true);
-    ltime.set_date_enabled(pmem::clock_with_date());
+    refresh();
    set_dirty();
 }

@@ -492,7 +540,6 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
    add_items({
        // {"ACARS", Color::yellow(), &bitmap_icon_adsb, [&nav](){ nav.push<ACARSAppView>(); }},
        {"ADS-B", Color::green(), &bitmap_icon_adsb, [&nav]() { nav.push<ADSBRxView>(); }},
-        {"AFSK", Color::yellow(), &bitmap_icon_modem, [&nav]() { nav.push<AFSKRxView>(); }},
        {"AIS Boats", Color::green(), &bitmap_icon_ais, [&nav]() { nav.push<AISAppView>(); }},
        {"Analog TV", Color::yellow(), &bitmap_icon_sstv, [&nav]() { nav.push<AnalogTvView>(); }},
        {"APRS", Color::green(), &bitmap_icon_aprs, [&nav]() { nav.push<APRSRXView>(); }},
@@ -512,6 +559,10 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
        // {"SSTV", Color::dark_grey(), &bitmap_icon_sstv, [&nav](){ nav.push<NotImplementedView>(); }},
        // {"TETRA", Color::dark_grey(), &bitmap_icon_tetra, [&nav](){ nav.push<NotImplementedView>(); }},
    });
+
+    for (auto const& gridItem : ExternalItemsMenuLoader::load_external_items(app_location_t::RX, nav)) {
+        add_item(gridItem);
+    };
 }

 /* TransmittersMenuView **************************************************/
@@ -540,6 +591,10 @@ TransmittersMenuView::TransmittersMenuView(NavigationView& nav) {
        {"TEDI/LCR", ui::Color::yellow(), &bitmap_icon_lcr, [&nav]() { nav.push<LCRView>(); }},
        {"TouchTune", ui::Color::green(), &bitmap_icon_touchtunes, [&nav]() { nav.push<TouchTunesView>(); }},
    });
+
+    for (auto const& gridItem : ExternalItemsMenuLoader::load_external_items(app_location_t::TX, nav)) {
+        add_item(gridItem);
+    };
 }

 /* UtilitiesMenuView *****************************************************/
@@ -553,7 +608,7 @@ UtilitiesMenuView::UtilitiesMenuView(NavigationView& nav) {
        {"File Manager", Color::green(), &bitmap_icon_dir, [&nav]() { nav.push<FileManagerView>(); }},
        {"Freq. Manager", Color::green(), &bitmap_icon_freqman, [&nav]() { nav.push<FrequencyManagerView>(); }},
        {"Notepad", Color::dark_cyan(), &bitmap_icon_notepad, [&nav]() { nav.push<TextEditorView>(); }},
-        {"IQ Trim", Color::orange(), &bitmap_icon_cut, [&nav]() { nav.push<IQTrimView>(); }},
+        {"IQ Trim", Color::orange(), &bitmap_icon_trim, [&nav]() { nav.push<IQTrimView>(); }},
        {"SD Over USB", Color::yellow(), &bitmap_icon_hackrf, [&nav]() { nav.push<SdOverUsbView>(); }},
        {"Signal Gen", Color::green(), &bitmap_icon_cwgen, [&nav]() { nav.push<SigGenView>(); }},
        // {"Test App", Color::dark_grey(), nullptr, [&nav](){ nav.push<TestView>(); }},
@@ -565,6 +620,10 @@ UtilitiesMenuView::UtilitiesMenuView(NavigationView& nav) {
        {"Wipe SD card", Color::red(), &bitmap_icon_tools_wipesd, [&nav]() { nav.push<WipeSDView>(); }},
    });

+    for (auto const& gridItem : ExternalItemsMenuLoader::load_external_items(app_location_t::UTILITIES, nav)) {
+        add_item(gridItem);
+    };
+
    set_max_rows(2);  // allow wider buttons
 }

@@ -44,6 +44,9 @@
 #include <vector>
 #include <utility>

+// for incrementing fake date when RTC battery is dead
+#define DATE_FILEFLAG u"/SETTINGS/DATE_FILEFLAG"
+
 using namespace sd_card;

 namespace ui {
@@ -79,6 +82,7 @@ class NavigationView : public View {
    }

    void push(View* v);
+    View* push_view(std::unique_ptr<View> new_view);
    void replace(View* v);
    void pop(bool trigger_update = true);

@@ -107,7 +111,6 @@ class NavigationView : public View {

    void free_view();
    void update_view();
-    View* push_view(std::unique_ptr<View> new_view);
 };

 /* Holds widgets and grows dynamically toward the left.
@@ -235,6 +238,7 @@ class SystemStatusView : public View {
    void on_title();
    void refresh();
    void on_clk();
+    void rtc_battery_workaround();

    MessageHandlerRegistration message_handler_refresh{
        Message::ID::StatusRefresh,
@@ -265,6 +265,7 @@ include_directories(. ${INCDIR})
 #######################################################################

 set(BASEBAND_IMAGES)
+set(BASEBAND_EXTERNAL_IMAGES)

 macro(DeclareTargets chunk_tag name)
 	project("baseband_${name}")
@@ -279,18 +280,38 @@ macro(DeclareTargets chunk_tag name)
 	target_link_libraries(${PROJECT_NAME}.elf ${LIBS})
 	target_link_libraries(${PROJECT_NAME}.elf -Wl,-Map=${PROJECT_NAME}.map)

-	add_custom_command(
-		OUTPUT ${PROJECT_NAME}.bin ${PROJECT_NAME}.img
-		COMMAND ${CMAKE_OBJCOPY} -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}.bin
-		COMMAND ${LZ4} -f -9 ${PROJECT_NAME}.bin ${PROJECT_NAME}.lz4
-		COMMAND ${MAKE_IMAGE_CHUNK} ${PROJECT_NAME}.lz4 ${chunk_tag} ${PROJECT_NAME}.img
-		DEPENDS ${PROJECT_NAME}.elf ${MAKE_IMAGE_CHUNK}
-		VERBATIM
-	)
+	if(add_to_firmware)
+
+		add_custom_command(
+			OUTPUT ${chunk_tag}.bin ${PROJECT_NAME}.img
+			COMMAND ${CMAKE_OBJCOPY} -O binary ${PROJECT_NAME}.elf ${chunk_tag}.bin
+			COMMAND ${LZ4} -f -9 ${chunk_tag}.bin ${PROJECT_NAME}.lz4
+			COMMAND ${MAKE_IMAGE_CHUNK} ${PROJECT_NAME}.lz4 ${chunk_tag} ${PROJECT_NAME}.img
+			DEPENDS ${PROJECT_NAME}.elf ${MAKE_IMAGE_CHUNK}
+			VERBATIM
+		)
+		
+		set(BASEBAND_IMAGES ${BASEBAND_IMAGES} ${PROJECT_NAME}.img)
+
+	else()
+
+		add_custom_command(
+			OUTPUT ${chunk_tag}.bin
+			COMMAND ${CMAKE_OBJCOPY} -O binary ${PROJECT_NAME}.elf ${chunk_tag}.bin
+			DEPENDS ${PROJECT_NAME}.elf
+			VERBATIM
+		)
+
+		set(BASEBAND_EXTERNAL_IMAGES ${BASEBAND_EXTERNAL_IMAGES} ${chunk_tag}.bin)
+
+	endif()
+
+

-	set(BASEBAND_IMAGES ${BASEBAND_IMAGES} ${PROJECT_NAME}.img)
 endmacro()

+set(add_to_firmware TRUE)
+
 ### ACARS RX

 set(MODE_CPPSRC
@@ -312,20 +333,13 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PADT adsbtx)

-### AFSK
+### AFSK TX

 set(MODE_CPPSRC
 	proc_afsk.cpp
 )
 DeclareTargets(PAFT afsktx)

-### AFSK RX
-
-set(MODE_CPPSRC
-	proc_afskrx.cpp
-)
-DeclareTargets(PAFR afskrx)
-
 ### APRS RX

 set(MODE_CPPSRC
@@ -493,13 +507,6 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PSTX sstvtx)

-### Test
-
-set(MODE_CPPSRC
-	proc_test.cpp
-)
-DeclareTargets(PTST test)
-
 ### Tones

 set(MODE_CPPSRC
@@ -586,6 +593,24 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PUSB sd_over_usb)

+### Place external app and disabled images below so they don't get added to the firmware
+set(add_to_firmware FALSE)
+
+### AFSK RX
+
+set(MODE_CPPSRC
+	proc_afskrx.cpp
+)
+DeclareTargets(PAFR afskrx)
+
+### Test
+
+set(MODE_CPPSRC
+	proc_test.cpp
+)
+DeclareTargets(PTST test)
+
+
 ### HackRF "factory" firmware

 add_custom_command(
@@ -616,7 +641,7 @@ project(baseband)
 add_custom_command(
 	OUTPUT ${PROJECT_NAME}.img
 	COMMAND cat ${BASEBAND_IMAGES} > ${PROJECT_NAME}.img
-	DEPENDS ${BASEBAND_IMAGES}
+	DEPENDS ${BASEBAND_IMAGES} ${BASEBAND_EXTERNAL_IMAGES}
 	DEPENDS hackrf.img terminator.img
 	VERBATIM
 )
@@ -33,6 +33,9 @@ __ram_end__             = __ram_start__ + __ram_size__;

 ENTRY(ResetHandler)

+ /* external apps */
+INCLUDE external.ld
+
 SECTIONS
 {
    . = 0;
@@ -63,7 +66,7 @@ SECTIONS
        PROVIDE(__fini_array_end = .);
    } > flash

-    .text : ALIGN(16) SUBALIGN(16)
+    .text : ALIGN(4) SUBALIGN(4)
    {
        *(.text.startup.*)
        *(.text)
@@ -142,7 +145,7 @@ SECTIONS
        *(COMMON)
        . = ALIGN(4);
        PROVIDE(_bss_end = .);
-    } > ram    
+    } > ram
 }

 PROVIDE(end = .);
@@ -61,7 +61,7 @@ SECTIONS
        PROVIDE(__fini_array_end = .);
    } > flash

-    .text : ALIGN(16) SUBALIGN(16)
+    .text : ALIGN(4) SUBALIGN(4)
    {
        *(.text.startup.*)
        *(.text)
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __EXTERNAL_APPS_H__
+#define __EXTERNAL_APPS_H__
+
+#include "ch.h"
+#include "ui_navigation.hpp"
+#include "spi_image.hpp"
+
+#define CURRENT_HEADER_VERSION 0x00000001
+
+typedef void (*externalAppEntry_t)(ui::NavigationView& nav);
+
+enum app_location_t : uint32_t {
+    UTILITIES = 0,
+    RX,
+    TX
+};
+
+struct application_information_t {
+    uint8_t* memory_location;
+    externalAppEntry_t externalAppEntry;
+    uint32_t header_version;
+    uint32_t app_version;
+
+    uint8_t app_name[16];
+    uint8_t bitmap_data[32];
+    uint32_t icon_color;
+    app_location_t menu_location;
+
+    portapack::spi_flash::image_tag_t m4_app_tag;
+    uint32_t m4_app_offset;
+};
+
+#endif /*__EXTERNAL_APPS_H__*/
@@ -47,7 +47,7 @@
 #define _USE_EXPAND 0
 /* This option switches f_expand function. (0:Disable or 1:Enable) */

-#define _USE_CHMOD 0
+#define _USE_CHMOD 1
 /* This option switches attribute manipulation functions, f_chmod() and f_utime().
 /  (0:Disable or 1:Enable) Also _FS_READONLY needs to be 0 to enable this option. */

@@ -28,6 +28,7 @@
 #include <cstddef>
 #include <algorithm>

+#include "irq_controls.hpp"
 #include "string_format.hpp"

 using namespace portapack;
@@ -625,6 +626,8 @@ void Console::write(std::string message) {
            } else {
                if (c == '\n') {
                    crlf();
+                } else if (c == '\r') {
+                    pos = {0, pos.y()};
                } else if (c == '\x1B') {
                    escape = true;
                } else {
@@ -1730,9 +1733,15 @@ bool TextEdit::on_key(const KeyEvent key) {
        cursor_pos_--;
    else if (key == KeyEvent::Right && cursor_pos_ < text_.length())
        cursor_pos_++;
-    else if (key == KeyEvent::Select)
-        insert_mode_ = !insert_mode_;
-    else
+    else if (key == KeyEvent::Select) {
+        if (key_is_long_pressed(key)) {
+            // Delete text to the cursor.
+            text_ = text_.substr(cursor_pos_);
+            set_cursor(0);
+        } else {
+            insert_mode_ = !insert_mode_;
+        }
+    } else
        return false;

    set_dirty();
@@ -1760,6 +1769,19 @@ bool TextEdit::on_touch(const TouchEvent event) {
    return true;
 }

+void TextEdit::on_focus() {
+    // Enable long press on "Select".
+    SwitchesState config;
+    config[toUType(Switch::Sel)] = true;
+    set_switches_long_press_config(config);
+}
+
+void TextEdit::on_blur() {
+    // Reset long press.
+    SwitchesState config{};
+    set_switches_long_press_config(config);
+}
+
 /* TextField *************************************************************/

 TextField::TextField(Rect parent_rect, std::string text)
@@ -689,6 +689,9 @@ class TextEdit : public Widget {
    bool on_encoder(const EncoderEvent delta) override;
    bool on_touch(const TouchEvent event) override;

+    void on_focus() override;
+    void on_blur() override;
+
   protected:
    std::string& text_;
    size_t max_length_;
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+#
+# Copyright (C) 2023 Bernd Herzog
+#
+# This file is part of PortaPack.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+# This script will copy compiled external apps to the Portapack.
+
+try=1
+while [ $try -le 180 ]
+do
+    if ls /dev/disk/by-id/*Portapack*part1 1> /dev/null 2>&1; then
+        disk=$(ls /dev/disk/by-id/*Portapack*part1)
+        part=$(readlink -f $disk)
+        mountpoint=$(findmnt -f -o TARGET --noheadings $part)
+        if [[ ! -z "$mountpoint" ]]; then
+
+            echo "Copying external applications to" $mountpoint
+            mkdir -p $mountpoint/APPS
+            cp application/*.ppma $mountpoint/APPS
+
+            echo "Unmounting" $mountpoint
+            umount $mountpoint
+
+            exit
+        fi
+    fi
+
+    if [ "$(( $try %5 ))" -eq "1" ]; then
+        echo "Please start SD over USB app ..."
+    fi
+
+    sleep 1
+
+    try=$(( $try + 1 ))
+done
@@ -0,0 +1,131 @@
+#!/usr/bin/env python3
+
+#
+# Copyright (C) 2023 Bernd Herzog
+#
+# This file is part of PortaPack.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+import os
+import sys
+import struct
+import subprocess
+
+usage_message = """
+PortaPack external app image creator
+This script is used in the build process and should never be run manually.
+See firmware/application/CMakeLists.txt > COMMAND ${EXPORT_EXTERNAL_APP_IMAGES}
+
+Usage: <command> <project source dir> <binary dir> <cmake objcopy path> <list of external image prefixes>
+"""
+
+maximum_application_size = 32*1024
+
+if len(sys.argv) < 4:
+	print(usage_message)
+	sys.exit(-1)
+
+def read_image(path):
+	f = open(path, 'rb')
+	data = f.read()
+	f.close()
+	return data
+
+def write_image(data, path):
+	f = open(path, 'wb')
+	f.write(data)
+	f.close()
+
+def patch_image(image_data, search_address, replace_address):
+	if (len(image_data) % 4) != 0:
+		print("file size not divideable by 4")
+		sys.exit(-1)
+
+	external_application_image = bytearray()
+
+	for x in range(int(len(image_data)/4)):
+		snippet = image_data[x*4:4*(x+1)]
+		val = int.from_bytes(snippet, byteorder='little')
+
+		# in firmware/application/external/external.ld the origin is set to something like search_address=0xEEE90000
+		# if the value is above the search_address and inside a 40kb window (maximum size of an app) we replace it
+		# with replace_address=(0x1008000 + m4 size) where the app will actually be located. The reason we do this instead just
+		# using the right address in external.ld is gcc does not permit to use the same memory range multiple times.
+		if val > search_address and (val - search_address) < maximum_application_size:
+			relative_address = val - search_address
+			new_address = replace_address + relative_address
+
+			new_snippet = new_address.to_bytes(4, byteorder='little')
+			external_application_image += new_snippet
+		else:
+			external_application_image += snippet
+			
+	return external_application_image
+
+project_source_dir = sys.argv[1]   #/portapack-mayhem/firmware/application
+binary_dir = sys.argv[2]           #/portapack-mayhem/build/firmware/application
+cmake_objcopy = sys.argv[3]
+
+memory_location_header_position = 0
+externalAppEntry_header_position = 4
+m4_app_tag_header_position = 72
+m4_app_offset_header_position = 76
+
+for external_image_prefix in sys.argv[4:]:
+
+	# COMMAND ${CMAKE_OBJCOPY} -v -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}_ext_pacman.bin --only-section=.external_app_pacman
+	himg = "{}/external_app_{}.himg".format(binary_dir, external_image_prefix)
+	subprocess.run([cmake_objcopy, "-v", "-O", "binary", "{}/application.elf".format(binary_dir), himg, "--only-section=.external_app_{}".format(external_image_prefix)]) 
+
+	external_application_image = read_image(himg)
+
+	#m4 image @ 0x44
+	chunk_data = external_application_image[m4_app_tag_header_position:m4_app_tag_header_position+4]
+
+	# skip m4 if not set
+	if (chunk_data[0] == 0 and chunk_data[1] == 0 and chunk_data[2] == 0 and chunk_data[3] == 0):
+		replace_address = 0x10080000
+		search_address = int.from_bytes(external_application_image[externalAppEntry_header_position:externalAppEntry_header_position+4], byteorder='little') & 0xFFFF0000
+		external_application_image = patch_image(external_application_image, search_address, replace_address)
+		external_application_image[memory_location_header_position:memory_location_header_position+4] = replace_address.to_bytes(4, byteorder='little')
+
+		write_image(external_application_image, "{}/{}.ppma".format(binary_dir, external_image_prefix))
+		continue
+
+	chunk_tag = chunk_data.decode("utf-8")
+	m4_image = read_image("{}/../baseband/{}.bin".format(binary_dir, chunk_tag))
+	app_image_len = len(external_application_image)
+	external_application_image += m4_image
+
+	if (len(m4_image) % 4) != 0:
+		print("m4 file size not divideable by 4")
+		sys.exit(-1)
+
+	replace_address = 0x10080000 + len(m4_image)
+	search_address = int.from_bytes(external_application_image[externalAppEntry_header_position:externalAppEntry_header_position+4], byteorder='little') & 0xFFFF0000
+	external_application_image = patch_image(external_application_image, search_address, replace_address)
+
+	external_application_image[memory_location_header_position:memory_location_header_position+4] = replace_address.to_bytes(4, byteorder='little')
+	external_application_image[m4_app_offset_header_position:m4_app_offset_header_position+4] = app_image_len.to_bytes(4, byteorder='little')
+
+	if (len(external_application_image) > maximum_application_size) != 0:
+		print("application {} can not exceed 32kb: {} bytes used".format(external_image_prefix, len(external_application_image)))
+		sys.exit(-1)
+
+	# write .ppma (portapack mayhem application)
+	write_image(external_application_image, "{}/{}.ppma".format(binary_dir, external_image_prefix))
Author	SHA1	Message	Date
gullradriel	264b1b38ba	fix complicated timing logic (#1480 )	2023-10-09 20:01:40 +02:00
Mark Thompson	65e71508ac	Incrementing date workaround for dead RTC battery (#1479 ) * Enable f_utime function * Added file_update_date() function * Added rtc_battery_workaround() function * Update ui_navigation.cpp	2023-10-09 12:04:46 +02:00
Mark Thompson	e5546159c5	Kludge fix for null parent() (#1477 )	2023-10-09 12:03:11 +02:00
gullradriel	d7c961ea4f	Fixing empty output file/store button/text display (#1475 )	2023-10-08 22:21:00 +02:00
Mark Thompson	ad987f2b5e	Added new icon for IQ Trim, and IQ Trim Button in FileMan (#1476 ) * Add files via upload * Added trim icon * Added trim icon * Added Trim button to FileMan * Added Trim button to FileMan * Added Trim button to FileMan * Added Trim button to FileMan	2023-10-08 14:57:59 -05:00
Brumi-2021	defb934c3f	Activating TX Low Pass Filter in Second IF IC (#1470 ) * Activating TX Low Pass Filter in Second IF IC * solving PR conversation revisions * Final TX LPF decision for ADSB_TX * Small comments correction. * Added set TX LPF also in APRS, BurgerPgr,Jammer	2023-10-08 17:50:31 +02:00
Bernd Herzog	5a850984b9	Calculator app (#1474 ) * implemented calculator app * improved output * refactoring	2023-10-08 16:24:02 +02:00
Bernd Herzog	1185b67b28	changed alignment for text sections (#1473 )	2023-10-07 15:30:43 +02:00
Bernd Herzog	abb42e8df4	added executeable bit for new scripts (#1471 )	2023-10-03 08:17:45 +02:00
Bernd Herzog	7fdb1af69d	External apps (#1469 ) * implemented external app build * added some ui stuff for testing * added pacman game * wired key to pacman game * fixed pacman drawing issue * changed afsk rx app to be external * fixed ui::NavigationView initialization for external apps * refactoring * refactoring * moved m4 image to external app * added script for external app deployment * refactoring * implemented dynamic app listing * added color to app icon * improved app loading * added external apps to sd card content * refactoring * review findings * typo * review findings * improved memory management of bitmaps	2023-10-02 20:19:22 +02:00
Kyle Reed	78713cc2af	Search cleanup, more binder support (#1467 )	2023-10-01 09:04:37 -07:00
Kyle Reed	951890eaff	Add Binder helper methods (#1465 ) * Add binder, fix focus on remote btn delete * Use binder for freqman edit	2023-09-29 18:55:27 +02:00