Improved Debounce for Encoders (#1837 )

* Fix variable type declaration * Fix typo * Two-bit encoder debouncing * Slight optimization * Comment change
Fixed ms_duration function to show actual ms (#1836 )
2026-09-14 02:29:29 +00:00 · 2024-01-31 14:13:21 -06:00 · 2024-01-31 21:08:17 +01:00 · 2024-01-30 21:32:01 +01:00 · 2024-01-30 20:55:59 +01:00 · 2024-01-30 20:55:32 +01:00
77 changed files with 1651 additions and 543 deletions
@@ -20,7 +20,7 @@ jobs:
      - name: check latest commit is less than a day
        id: should_run
        continue-on-error: true
-        run: test -z $(git rev-list  --after="24 hours" ${{ github.sha }}) && echo "::set-output name=should_run::false"
+        run: test -z $(git rev-list  --after="24 hours" ${{ github.sha }}) && echo "should_run=false" >> $GITHUB_OUTPUT
  build:
    needs: check_date
    if: ${{ needs.check_date.outputs.should_run != 'false' }}
@@ -28,10 +28,10 @@ jobs:
    steps:
      - name: Get current date
        id: date
-        run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
      - name: Get version date
        id: version_date
-        run: echo "::set-output name=date::n_$(date +'%y%m%d')"
+        run: echo "date=n_$(date +'%y%m%d')" >> $GITHUB_OUTPUT
      - name: Checkout 
        uses: actions/checkout@master
        with:
@@ -71,11 +71,11 @@ jobs:
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
-          CHANGELOG=$(python3 .github/workflows/changelog.py)
-          CHANGELOG="${CHANGELOG//'%'/'%25'}"
-          CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
-          CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
-          echo "::set-output name=content::$CHANGELOG"
+          {
+            echo 'content<<EOF'
+            python3 .github/workflows/changelog.py
+            echo EOF
+          } >> "$GITHUB_OUTPUT"
        id: changelog
      - name: Create Release
        id: create_release
@@ -100,7 +100,7 @@ jobs:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: build/firmware/portapack-mayhem.ppfw.tar
+          asset_path: build/firmware/portapack-mayhem_OCI.ppfw.tar
          asset_name: mayhem_nightly_${{ steps.version_date.outputs.date }}_OCI.ppfw.tar
          asset_content_type: application/x-tar
      - name: Upload Firmware Asset
@@ -9,7 +9,7 @@ jobs:
    steps:
      - name: Get current date
        id: date
-        run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
      - name: Checkout 
        uses: actions/checkout@master
        with:
@@ -26,10 +26,10 @@ jobs:
          git submodule update --init --recursive
      - name: Get version
        id: version
-        run: echo "::set-output name=version::$(cat .github/workflows/version.txt)"
+        run: echo "version=$(cat .github/workflows/version.txt)" >> $GITHUB_OUTPUT
      - name: Get past version
        id: past_version
-        run: echo "::set-output name=past_version::$(cat .github/workflows/past_version.txt)"
+        run: echo "past_version=$(cat .github/workflows/past_version.txt)" >> $GITHUB_OUTPUT
      - name: Build the Docker image
        run: docker build -t portapack-dev -f dockerfile-nogit . --tag my-image-name:$(date +%s)
      - name: Make build folder
@@ -55,11 +55,11 @@ jobs:
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
-          CHANGELOG=$(python3 .github/workflows/changelog.py ${{ steps.past_version.outputs.past_version }})
-          CHANGELOG="${CHANGELOG//'%'/'%25'}"
-          CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
-          CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
-          echo "::set-output name=content::$CHANGELOG"
+          {
+            echo 'content<<EOF'
+            python3 .github/workflows/changelog.py ${{ steps.past_version.outputs.past_version }}
+            echo EOF
+          } >> "$GITHUB_OUTPUT"
        id: changelog
      - name: Create Release
        id: create_release
@@ -94,7 +94,7 @@ jobs:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: build/firmware/portapack-mayhem.ppfw.tar
+          asset_path: build/firmware/portapack-mayhem_OCI.ppfw.tar
          asset_name: mayhem_${{ steps.version.outputs.version }}_OCI.ppfw.tar
          asset_content_type: application/x-tar
      - name: Upload Firmware Asset
@@ -46,7 +46,6 @@ if ("${VERSION}" STREQUAL "")
 	set(VERSION_NOHASH "dev")
 else()
 	set(VERSION_NOHASH "${VERSION}")
-	set(PPFW_FILENAME "portapack-mayhem.ppfw.tar")
 endif()

 execute_process(
@@ -55,16 +54,6 @@ execute_process(
 )
 set(VERSION_MD5 "0x${VERSION_MD5}")

-if (NOT DEFINED PPFW_FILENAME)
-	# Funny business here: trying to generate unique names to prevent renaming of shared test-drive builds by the browser on download to .ppfw-42.tar as it wont be recognized by the flasher
-	execute_process(
-		COMMAND date "+%y%m%d-%H%M"
-		OUTPUT_VARIABLE PPFW_FILENAME
-	)
-	string(STRIP ${PPFW_FILENAME} PPFW_FILENAME)
-	set(PPFW_FILENAME "portapack-mayhem_${PPFW_FILENAME}_OCI.ppfw.tar")
-endif()
-
 message("Building version: ${VERSION} MD5: ${VERSION_MD5}")

 set(LICENSE_PATH ${CMAKE_CURRENT_LIST_DIR}/LICENSE)
@@ -83,5 +72,12 @@ set(HACKRF_CPLD_XSVF_PATH ${HACKRF_PATH}/firmware/cpld/sgpio_if/${HACKRF_CPLD_XS
 set(HACKRF_FIRMWARE_DFU_IMAGE ${hackrf_usb_BINARY_DIR}/${HACKRF_FIRMWARE_DFU_FILENAME})
 set(HACKRF_FIRMWARE_BIN_IMAGE ${hackrf_usb_BINARY_DIR}/${HACKRF_FIRMWARE_BIN_FILENAME})

+find_program(CCACHE "ccache")
+if(CCACHE)
+    set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE})
+    set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE})
+    set(ENV{CCACHE_SLOPPINESS} pch_defines,time_macros)
+endif(CCACHE)
+
 enable_testing()
 add_subdirectory(firmware)
@@ -35,13 +35,6 @@ RUN mkdir /opt/build \
 && mkdir armbin \
 && tar --strip=1 -xjvf gcc-arm-none-eabi -C armbin

-# Configure CCACHE
-RUN mkdir ~/bin \
- && cd ~/bin \
- && for tool in gcc g++ cpp c++; do \
- 		ln -s $(which ccache) arm-none-eabi-$tool \
-	 ; done
-
 ADD firmware/tools/docker-entrypoint.sh /usr/local/bin/entrypoint.sh
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

@@ -19,9 +19,5 @@ RUN apk add --no-cache g++ gcc clang clang-static clang-dev llvm-dev llvm-static
 ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8

-# Configure CCACHE
-RUN mkdir ~/bin && cd ~/bin && \
-    for tool in gcc g++ cpp c++;do ln -s $(which ccache) arm-none-eabi-$tool;done
-
 CMD cd .. && cd build && \
    cmake .. && make ppfw
@@ -35,13 +35,6 @@ RUN mkdir /opt/build \
 && mkdir armbin \
 && tar --strip=1 -xjvf gcc-arm-none-eabi -C armbin

-# Configure CCACHE
-RUN mkdir ~/bin \
- && cd ~/bin \
- && for tool in gcc g++ cpp c++; do \
- 		ln -s $(which ccache) arm-none-eabi-$tool \
-	 ; done
-
 ADD firmware/tools/docker-entrypoint.sh /usr/local/bin/entrypoint.sh
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

@@ -35,6 +35,7 @@ set(LZ4 lz4)

 set(FIRMWARE_NAME portapack-h1_h2-mayhem)
 set(FIRMWARE_FILENAME ${FIRMWARE_NAME}.bin)
+set(PPFW_FILENAME "portapack-mayhem_OCI.ppfw.tar")

 # In our current build container cmake need a little help to get the version :)
 if(NOT DEFINED ${CMAKE_CXX_COMPILER_VERSION})
@@ -346,6 +346,7 @@ set(CPPSRC
 	${CPLD_20170522_DATA_CPP}
 	${HACKRF_CPLD_DATA_CPP}
 	ui_external_items_menu_loader.cpp
+	view_factory_base.cpp

 	${EXTCPPSRC}
 )
@@ -113,6 +113,7 @@ bool save_settings(std::string_view store_name, const SettingBindings& bindings)
 namespace app_settings {

 enum class Mode : uint8_t {
+    NO_RF = 0x00,
    RX = 0x01,
    TX = 0x02,
    RX_TX = 0x03,  // Both TX/RX
@@ -80,7 +80,13 @@ void SoundBoardView::file_error() {
 }

 void SoundBoardView::start_tx(const uint32_t id) {
+    if (file_list.empty()) {
+        file_error();
+        return;
+    }
+
    auto reader = std::make_unique<WAVFileReader>();
+
    uint32_t tone_key_index = options_tone_key.selected_index();
    uint32_t sample_rate;

@@ -113,12 +119,13 @@ void SoundBoardView::start_tx(const uint32_t id) {
        1536000 / 20,  // Update vu-meter at 20Hz
        transmitter_model.channel_bandwidth(),
        0,  // Gain is unused
-        8,  // shift_bits_s16, default 8 bits, but  also unused
-        TONES_F2D(tone_key_frequency(tone_key_index), 1536000),
-        0,  // AM
-        0,  // DSB
-        0,  // USB
-        0   // LSB
+        8,  // shift_bits_s16, default 8 bits, but also unused
+        8,  // bits per sample
+        TONES_F2D(tone_key_frequency(tone_key_index), TONES_SAMPLERATE),
+        false,  // AM
+        false,  // DSB
+        false,  // USB
+        false   // LSB
    );
    baseband::set_sample_rate(sample_rate);

@@ -126,7 +133,8 @@ void SoundBoardView::start_tx(const uint32_t id) {

    tx_view.set_transmitting(true);

-    audio::output::start();
+    if (tone_key_index == 0)
+        audio::output::start();
 }

 /*void SoundBoardView::show_infos() {
@@ -232,6 +240,7 @@ SoundBoardView::SoundBoardView(
                  //&text_duration,
                  //&progressbar,
                  &field_volume,
+                  &text_volume_disabled,
                  &page_info,
                  &check_loop,
                  &check_random,
@@ -257,6 +266,13 @@ SoundBoardView::SoundBoardView(
    tone_keys_populate(options_tone_key);
    options_tone_key.set_selected_index(0);

+    text_volume_disabled.hidden(true);
+    options_tone_key.on_change = [this](size_t index, OptionsField::value_t) {
+        bool tone_key_enabled = (index != 0);
+        text_volume_disabled.hidden(!tone_key_enabled);
+        field_volume.hidden(tone_key_enabled);
+    };
+
    check_loop.set_value(false);
    check_random.set_value(false);

@@ -128,6 +128,9 @@ class SoundBoardView : public View {

    AudioVolumeField field_volume{
        {28 * 8, 180}};
+    Text text_volume_disabled{
+        {28 * 8, 180, 3 * 8, 16},
+        "--"};

    Checkbox check_loop{
        {0, 25 * 8 + 4},
@@ -407,7 +407,7 @@ void ADSBRxView::on_frame(const ADSBFrameMessage* message) {
    status_good_frame.toggle();

    rtc::RTC datetime;
-    rtcGetTime(&RTCD1, &datetime);
+    rtcGetTime(&RTCD1, &datetime);  // Reading RTC directly to avoid DST transitions when calculating delta
    frame.set_rx_timestamp(datetime.minute() * 60 + datetime.second());

    // NB: Reference to update entry in-place.
@@ -101,6 +101,8 @@ APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect)
            field_frequency.set_value(145175000);
        } else if (i == 3) {
            field_frequency.set_value(144575000);
+        } else if (i == 4) {
+            field_frequency.set_value(145825000);
        }
    };

@@ -258,7 +260,7 @@ void APRSTableView::on_pkt(const APRSPacketMessage* message) {
    std::string source_formatted = packet.get_source_formatted();
    std::string info_string = packet.get_stream_text();

-    rtcGetTime(&RTCD1, &datetime);
+    rtc_time::now(datetime);
    auto& entry = ::on_packet(recent, packet.get_source());
    entry.reset_age();
    entry.inc_hit();
@@ -221,7 +221,8 @@ class APRSRxView : public View {
        {{"NA ", 0},
         {"EUR", 1},
         {"AUS", 2},
-         {"NZ ", 3}}};
+         {"NZ ", 3},
+         {"ISS", 4}}};

    RxFrequencyField field_frequency{
        {3 * 8, 0 * 16},
@@ -21,6 +21,7 @@
 */

 #include "ui_flash_utility.hpp"
+#include "ui_styles.hpp"
 #include "portapack_shared_memory.hpp"

 namespace ui {
@@ -30,6 +31,30 @@ static const char16_t* firmware_folder = u"/FIRMWARE";
 Thread* FlashUtilityView::thread{nullptr};
 static constexpr size_t max_filename_length = 26;

+bool valid_firmware_file(std::filesystem::path::string_type path) {
+    File firmware_file;
+    uint32_t read_buffer[128];
+    uint32_t checksum{(uint32_t)~FLASH_EXPECTED_CHECKSUM};  // initializing to invalid checksum in case file can't be read
+
+    // test read of the whole file just to validate checksum (baseband flash code will re-read when flashing)
+    auto result = firmware_file.open(path.c_str());
+    if (!result.is_valid()) {
+        checksum = 0;
+        for (uint32_t i = 0; i < FLASH_ROM_SIZE / sizeof(read_buffer); i++) {
+            auto readResult = firmware_file.read(&read_buffer, sizeof(read_buffer));
+
+            // if file is smaller than 1MB, assume it's a downgrade to an old FW version and ignore the checksum
+            if ((!readResult) || (readResult.value() != sizeof(read_buffer))) {
+                checksum = FLASH_EXPECTED_CHECKSUM;
+                break;
+            }
+
+            checksum += simple_checksum((uint32_t)read_buffer, sizeof(read_buffer));
+        }
+    }
+    return (checksum == FLASH_EXPECTED_CHECKSUM);
+}
+
 FlashUtilityView::FlashUtilityView(NavigationView& nav)
    : nav_(nav) {
    add_children({&labels,
@@ -50,7 +75,7 @@ FlashUtilityView::FlashUtilityView(NavigationView& nav)
                                this->firmware_selected(path);
                            }});
    }
-    for (const auto& entry : std::filesystem::directory_iterator(firmware_folder, u"*.ppfw.tar")) {
+    for (const auto& entry : std::filesystem::directory_iterator(firmware_folder, u"*.tar")) {
        auto filename = entry.path().filename();
        auto path = entry.path().native();

@@ -85,9 +110,8 @@ bool FlashUtilityView::endsWith(const std::u16string& str, const std::u16string&
    }
 }

-std::filesystem::path FlashUtilityView::extract_tar(std::filesystem::path::string_type path) {
+std::filesystem::path FlashUtilityView::extract_tar(std::filesystem::path::string_type path, ui::Painter& painter) {
    //
-    ui::Painter painter;
    painter.fill_rectangle(
        {0, 0, portapack::display.width(), portapack::display.height()},
        ui::Color::black());
@@ -98,22 +122,22 @@ std::filesystem::path FlashUtilityView::extract_tar(std::filesystem::path::strin
        painter.fill_rectangle({0, 50, portapack::display.width(), 90}, ui::Color::black());
        painter.draw_string({0, 60}, this->nav_.style(), fileName);
    });
-    if (res.string().empty()) {
-        ui::Painter painter;
-        painter.fill_rectangle({0, 50, portapack::display.width(), 90}, ui::Color::black());
-        painter.draw_string({0, 60}, this->nav_.style(), "BAD TAR FILE");
-        chThdSleepMilliseconds(5000);
-    }
    return res;
 }

-void FlashUtilityView::flash_firmware(std::filesystem::path::string_type path) {
-    if (endsWith(path, u".ppfw.tar")) {
-        // extract, then update
-        path = extract_tar(u'/' + path).native();
-        if (path.empty()) return;
-    }
+bool FlashUtilityView::flash_firmware(std::filesystem::path::string_type path) {
    ui::Painter painter;
+    if (endsWith(path, u".tar")) {
+        // extract, then update
+        path = extract_tar(u'/' + path, painter).native();
+    }
+
+    if (path.empty() || !valid_firmware_file(path.c_str())) {
+        painter.fill_rectangle({0, 50, portapack::display.width(), 90}, ui::Color::black());
+        painter.draw_string({0, 60}, Styles::red, "BAD FIRMWARE FILE");
+        chThdSleepMilliseconds(5000);
+        return false;
+    }
    painter.fill_rectangle(
        {0, 0, portapack::display.width(), portapack::display.height()},
        ui::Color::black());
@@ -126,6 +150,7 @@ void FlashUtilityView::flash_firmware(std::filesystem::path::string_type path) {
    std::memcpy(&shared_memory.bb_data.data[0], path.c_str(), (path.length() + 1) * 2);
    m4_init(portapack::spi_flash::image_tag_flash_utility, portapack::memory::map::m4_code, false);
    m0_halt();
+    return true;  // fixes compiler warning (line should not be reached due to halt)
 }

 void FlashUtilityView::focus() {
@@ -32,8 +32,14 @@
 #include "untar.hpp"
 #include <cstdint>

+#define FLASH_ROM_SIZE 1048576
+#define FLASH_STARTING_ADDRESS 0x00000000
+#define FLASH_EXPECTED_CHECKSUM 0x00000000
+
 namespace ui {

+bool valid_firmware_file(std::filesystem::path::string_type path);
+
 class FlashUtilityView : public View {
   public:
    FlashUtilityView(NavigationView& nav);
@@ -41,6 +47,7 @@ class FlashUtilityView : public View {
    void focus() override;

    std::string title() const override { return "Flash Utility"; };
+    bool flash_firmware(std::filesystem::path::string_type path);

   private:
    NavigationView& nav_;
@@ -55,9 +62,9 @@ class FlashUtilityView : public View {
        {0, 2 * 8, 240, 26 * 8},
        true};

-    std::filesystem::path extract_tar(std::filesystem::path::string_type path);  // extracts the tar file, and returns the firmware.bin path from it. empty string if no fw
+    std::filesystem::path extract_tar(std::filesystem::path::string_type path, ui::Painter& painter);  // extracts the tar file, and returns the firmware.bin path from it. empty string if no fw
    void firmware_selected(std::filesystem::path::string_type path);
-    void flash_firmware(std::filesystem::path::string_type path);
+
    bool endsWith(const std::u16string& str, const std::u16string& suffix);
 };

@@ -105,6 +105,7 @@ void MicTXView::configure_baseband() {
        transmitting ? transmitter_model.channel_bandwidth() : 0,
        mic_gain_x10 / 10.0,
        shift_bits(),  // to be used in dsp_modulate
+        8,             // bits per sample
        TONES_F2D(tone_key_frequency(tone_key_index), sampling_rate),
        (mic_mod_index == MIC_MOD_AM),
        (mic_mod_index == MIC_MOD_DSB),
@@ -277,18 +277,9 @@ NumbersStationView::NumbersStationView(
    symfield_code.set_offset(10, 12);  // End

    /*
-        rtc::RTC datetime;
-        rtcGetTime(&RTCD1, &datetime);
-
-        // Thanks, Sakamoto-sama !
-        y = datetime.year();
-        m = datetime.month();
-        d = datetime.day();
-        y -= m < 3;
-        dayofweek = (y + y/4 - y/100 + y/400 + month_table[m-1] + d) % 7;
-
+        dayofweek = rtc_time::current_day_of_week();
        text_title.set(day_of_week[dayofweek]);
-*/
+    */

    button_exit.on_select = [&nav](Button&) {
        nav.pop();
@@ -61,10 +61,9 @@ SetDateTimeView::SetDateTimeView(
    NavigationView& nav) {
    button_save.on_select = [&nav, this](Button&) {
        const auto model = this->form_collect();
-        const rtc::RTC new_datetime{
-            model.year, model.month, model.day,
-            model.hour, model.minute, model.second};
-        rtcSetTime(&RTCD1, &new_datetime);
+        rtc::RTC new_datetime{model.year, model.month, model.day, model.hour, model.minute, model.second};
+        pmem::set_config_dst(model.dst);
+        rtc_time::set(new_datetime);  // NB: 1 hour will be subtracted if value is stored in RTC during DST
        nav.pop();
    },

@@ -80,20 +79,49 @@ SetDateTimeView::SetDateTimeView(
        &field_hour,
        &field_minute,
        &field_second,
+        &text_weekday,
+        &text_day_of_year,
+        &checkbox_dst_enable,
+        &options_dst_start_which,
+        &options_dst_start_weekday,
+        &options_dst_start_month,
+        &options_dst_end_which,
+        &options_dst_end_weekday,
+        &options_dst_end_month,
        &button_save,
        &button_cancel,
    });

+    // Populate DST options (same string text for start & end)
+    options_dst_start_which.set_options(which_options);
+    options_dst_end_which.set_options(which_options);
+    options_dst_start_weekday.set_options(weekday_options);
+    options_dst_end_weekday.set_options(weekday_options);
+    options_dst_start_month.set_options(month_options);
+    options_dst_end_month.set_options(month_options);
+
+    const auto date_changed_fn = [this](int32_t) {
+        auto weekday = rtc_time::day_of_week(field_year.value(), field_month.value(), field_day.value());
+        auto doy = rtc_time::day_of_year(field_year.value(), field_month.value(), field_day.value());
+        bool valid_date = (field_day.value() <= rtc_time::days_per_month(field_year.value(), field_month.value()));
+        text_weekday.set(valid_date ? weekday_options[weekday].first : "-");
+        text_day_of_year.set(valid_date ? to_string_dec_uint(doy, 3) : "-");
+    };
+
+    field_year.on_change = date_changed_fn;
+    field_month.on_change = date_changed_fn;
+    field_day.on_change = date_changed_fn;
+
    rtc::RTC datetime;
-    rtcGetTime(&RTCD1, &datetime);
+    rtc_time::now(datetime);
    SetDateTimeModel model{
        datetime.year(),
        datetime.month(),
        datetime.day(),
        datetime.hour(),
        datetime.minute(),
-        datetime.second()};
-
+        datetime.second(),
+        pmem::config_dst()};
    form_init(model);
 }

@@ -108,16 +136,32 @@ void SetDateTimeView::form_init(const SetDateTimeModel& model) {
    field_hour.set_value(model.hour);
    field_minute.set_value(model.minute);
    field_second.set_value(model.second);
+    checkbox_dst_enable.set_value(model.dst.b.dst_enabled);
+    options_dst_start_which.set_by_value(model.dst.b.start_which);
+    options_dst_start_weekday.set_by_value(model.dst.b.start_weekday);
+    options_dst_start_month.set_by_value(model.dst.b.start_month);
+    options_dst_end_which.set_by_value(model.dst.b.end_which);
+    options_dst_end_weekday.set_by_value(model.dst.b.end_weekday);
+    options_dst_end_month.set_by_value(model.dst.b.end_month);
 }

 SetDateTimeModel SetDateTimeView::form_collect() {
+    pmem::dst_config_t dst;
+    dst.b.dst_enabled = static_cast<uint8_t>(checkbox_dst_enable.value());
+    dst.b.start_which = static_cast<uint8_t>(options_dst_start_which.selected_index_value());
+    dst.b.start_weekday = static_cast<uint8_t>(options_dst_start_weekday.selected_index_value());
+    dst.b.start_month = static_cast<uint8_t>(options_dst_start_month.selected_index_value());
+    dst.b.end_which = static_cast<uint8_t>(options_dst_end_which.selected_index_value());
+    dst.b.end_weekday = static_cast<uint8_t>(options_dst_end_weekday.selected_index_value());
+    dst.b.end_month = static_cast<uint8_t>(options_dst_end_month.selected_index_value());
    return {
        .year = static_cast<uint16_t>(field_year.value()),
        .month = static_cast<uint8_t>(field_month.value()),
        .day = static_cast<uint8_t>(field_day.value()),
        .hour = static_cast<uint8_t>(field_hour.value()),
        .minute = static_cast<uint8_t>(field_minute.value()),
-        .second = static_cast<uint8_t>(field_second.value())};
+        .second = static_cast<uint8_t>(field_second.value()),
+        .dst = dst};
 }

 /* SetRadioView ******************************************/
@@ -44,6 +44,7 @@ struct SetDateTimeModel {
    uint8_t hour;
    uint8_t minute;
    uint8_t second;
+    portapack::persistent_memory::dst_config_t dst;
 };

 class SetDateTimeView : public View {
@@ -55,56 +56,111 @@ class SetDateTimeView : public View {
    std::string title() const override { return "Date/Time"; };

   private:
+    using option_t = std::pair<std::string, int32_t>;
+    std::vector<option_t> which_options = {{"1st", 0}, {"2nd", 1}, {"3rd", 2}, {"4th", 3}, {"Last", 4}};
+    std::vector<option_t> weekday_options = {{"Sun", 0}, {"Mon", 1}, {"Tue", 2}, {"Wed", 3}, {"Thu", 4}, {"Fri", 5}, {"Sat", 6}};
+    std::vector<option_t> month_options = {{"Jan", 1}, {"Feb", 2}, {"Mar", 3}, {"Apr", 4}, {"May", 5}, {"Jun", 6}, {"Jul", 7}, {"Aug", 8}, {"Sep", 9}, {"Oct", 10}, {"Nov", 11}, {"Dec", 12}};
+
    Labels labels{
        {{1 * 8, 1 * 16}, "Adjust the RTC clock date &", Color::light_grey()},
        {{1 * 8, 2 * 16}, "time. If clock resets after", Color::light_grey()},
        {{1 * 8, 3 * 16}, "reboot, coin batt. is dead. ", Color::light_grey()},
-        {{5 * 8, 8 * 16 - 2}, "YYYY-MM-DD HH:MM:SS", Color::grey()},
-        {{9 * 8, 9 * 16}, "-  -     :  :", Color::light_grey()}};
+        {{1 * 8, 5 * 16 - 2}, "YYYY-MM-DD HH:MM:SS  DoW DoY", Color::grey()},
+        {{5 * 8, 6 * 16}, "-  -     :  :", Color::light_grey()},
+        {{1 * 8, 11 * 16}, "DST adds 1 hour to RTC time.", Color::light_grey()},
+        {{0 * 8, 12 * 16}, "Start: 0:00 on Nth  DDD in", Color::light_grey()},
+        {{0 * 8, 13 * 16}, "End:   1:00 on Nth  DDD in", Color::light_grey()}};

    NumberField field_year{
-        {5 * 8, 9 * 16},
+        {1 * 8, 6 * 16},
        4,
        {2015, 2099},
        1,
        '0',
+        true,
    };
    NumberField field_month{
-        {10 * 8, 9 * 16},
+        {6 * 8, 6 * 16},
        2,
        {1, 12},
        1,
        '0',
+        true,
    };
    NumberField field_day{
-        {13 * 8, 9 * 16},
+        {9 * 8, 6 * 16},
        2,
        {1, 31},
        1,
        '0',
+        true,
    };

    NumberField field_hour{
-        {16 * 8, 9 * 16},
+        {12 * 8, 6 * 16},
        2,
        {0, 23},
        1,
        '0',
+        true,
    };
    NumberField field_minute{
-        {19 * 8, 9 * 16},
+        {15 * 8, 6 * 16},
        2,
        {0, 59},
        1,
        '0',
+        true,
    };
    NumberField field_second{
-        {22 * 8, 9 * 16},
+        {18 * 8, 6 * 16},
        2,
        {0, 59},
        1,
        '0',
+        true,
    };
+    Text text_weekday{
+        {22 * 8, 6 * 16, 3 * 8, 16},
+        ""};
+    Text text_day_of_year{
+        {26 * 8, 6 * 16, 3 * 8, 16},
+        ""};
+
+    Checkbox checkbox_dst_enable{
+        {2 * 8, 9 * 16},
+        23,
+        "Enable Daylight Savings"};
+
+    OptionsField options_dst_start_which{
+        {15 * 8, 12 * 16},
+        4,
+        {}};
+
+    OptionsField options_dst_start_weekday{
+        {20 * 8, 12 * 16},
+        3,
+        {}};
+
+    OptionsField options_dst_start_month{
+        {27 * 8, 12 * 16},
+        3,
+        {}};
+
+    OptionsField options_dst_end_which{
+        {15 * 8, 13 * 16},
+        4,
+        {}};
+
+    OptionsField options_dst_end_weekday{
+        {20 * 8, 13 * 16},
+        3,
+        {}};
+
+    OptionsField options_dst_end_month{
+        {27 * 8, 13 * 16},
+        3,
+        {}};

    Button button_save{
        {2 * 8, 16 * 16, 12 * 8, 32},
@@ -22,11 +22,12 @@

 #include "ui_view_wav.hpp"
 #include "ui_fileman.hpp"
+#include "audio.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"

 using namespace portapack;

-#include "string_format.hpp"
-
 namespace ui {

 void ViewWavView::update_scale(int32_t new_scale) {
@@ -81,6 +82,8 @@ void ViewWavView::load_wav(std::filesystem::path file_path) {
    int16_t sample;
    uint32_t average;

+    wav_file_path = file_path;
+
    text_filename.set(file_path.filename().string());
    auto ms_duration = wav_reader->ms_duration();
    text_duration.set(unit_auto_scale(ms_duration, 2, 3) + "s");
@@ -117,9 +120,90 @@ void ViewWavView::reset_controls() {
    field_cursor_b.set_value(0);
 }

+bool ViewWavView::is_active() {
+    return (bool)replay_thread;
+}
+
+void ViewWavView::stop() {
+    if (is_active())
+        replay_thread.reset();
+
+    audio::output::stop();
+
+    button_play.set_bitmap(&bitmap_play);
+    ready_signal = false;
+}
+
+void ViewWavView::handle_replay_thread_done(const uint32_t return_code) {
+    (void)return_code;
+
+    stop();
+    progressbar.set_value(0);
+
+    if (return_code == ReplayThread::READ_ERROR)
+        file_error();
+}
+
+void ViewWavView::set_ready() {
+    ready_signal = true;
+}
+
+void ViewWavView::file_error() {
+    nav_.display_modal("Error", "File read error.");
+}
+
+void ViewWavView::start_playback() {
+    uint32_t sample_rate;
+
+    auto reader = std::make_unique<WAVFileReader>();
+
+    stop();
+
+    if (!reader->open(wav_file_path)) {
+        file_error();
+        return;
+    }
+
+    button_play.set_bitmap(&bitmap_stop);
+
+    sample_rate = reader->sample_rate();
+
+    progressbar.set_max(reader->sample_count());
+
+    replay_thread = std::make_unique<ReplayThread>(
+        std::move(reader),
+        read_size, buffer_count,
+        &ready_signal,
+        [](uint32_t return_code) {
+            ReplayThreadDoneMessage message{return_code};
+            EventDispatcher::send_message(message);
+        });
+
+    baseband::set_audiotx_config(
+        1536000 / 20,  // Rate of sending progress updates
+        0,             // Transmit BW = 0 = not transmitting
+        0,             // Gain - unused
+        8,             // shift_bits_s16, default 8 bits - unused
+        16,            // bits per sample
+        0,             // tone key disabled
+        false,         // AM
+        false,         // DSB
+        false,         // USB
+        false          // LSB
+    );
+    baseband::set_sample_rate(sample_rate);
+
+    audio::output::start();
+}
+
+void ViewWavView::on_playback_progress(const uint32_t progress) {
+    progressbar.set_value(progress);
+}
+
 ViewWavView::ViewWavView(
    NavigationView& nav)
    : nav_(nav) {
+    baseband::run_image(portapack::spi_flash::image_tag_audio_tx);
    wav_reader = std::make_unique<WAVFileReader>();

    add_children({&labels,
@@ -128,21 +212,26 @@ ViewWavView::ViewWavView(
                  &text_title,
                  &text_duration,
                  &button_open,
+                  &button_play,
                  &waveform,
+                  &progressbar,
                  &field_pos_seconds,
                  &field_pos_samples,
                  &field_scale,
                  &field_cursor_a,
                  &field_cursor_b,
-                  &text_delta});
+                  &text_delta,
+                  &field_volume});
+
    reset_controls();
+
    button_open.on_select = [this, &nav](Button&) {
        auto open_view = nav.push<FileLoadView>(".WAV");
        open_view->on_changed = [this, &nav](std::filesystem::path file_path) {
            // Can't show new dialogs in an on_changed handler, so use continuation.
            nav.set_on_pop([this, &nav, file_path]() {
                if (!wav_reader->open(file_path)) {
-                    nav_.display_modal("Error", "Couldn't open file.");
+                    file_error();
                    return;
                }
                if ((wav_reader->channels() != 1) || (wav_reader->bits_per_sample() != 16)) {
@@ -155,6 +244,15 @@ ViewWavView::ViewWavView(
        };
    };

+    field_volume.set_value(field_volume.value());
+
+    button_play.on_select = [this, &nav](ImageButton&) {
+        if (this->is_active())
+            stop();
+        else
+            start_playback();
+    };
+
    field_scale.on_change = [this](int32_t value) {
        update_scale(value);
    };
@@ -179,4 +277,9 @@ void ViewWavView::focus() {
    button_open.focus();
 }

+ViewWavView::~ViewWavView() {
+    stop();
+    baseband::shutdown();
+}
+
 } /* namespace ui */
@@ -24,12 +24,15 @@
 #include "ui_navigation.hpp"
 #include "io_wave.hpp"
 #include "spectrum_color_lut.hpp"
+#include "ui_receiver.hpp"
+#include "replay_thread.hpp"

 namespace ui {

 class ViewWavView : public View {
   public:
    ViewWavView(NavigationView& nav);
+    ~ViewWavView();

    void focus() override;
    void paint(Painter&) override;
@@ -37,6 +40,9 @@ class ViewWavView : public View {
    std::string title() const override { return "WAV viewer"; };

   private:
+    app_settings::SettingsManager settings_{
+        "wav_viewer", app_settings::Mode::NO_RF};
+
    NavigationView& nav_;
    static constexpr uint32_t subsampling_factor = 8;

@@ -46,6 +52,20 @@ class ViewWavView : public View {
    void on_pos_changed();
    void load_wav(std::filesystem::path file_path);
    void reset_controls();
+    bool is_active();
+    void stop();
+    void handle_replay_thread_done(const uint32_t return_code);
+    void set_ready();
+    void file_error();
+    void start_playback();
+    void on_playback_progress(const uint32_t progress);
+
+    std::filesystem::path wav_file_path{};
+    std::unique_ptr<ReplayThread> replay_thread{};
+    bool ready_signal{false};
+    const size_t read_size{2048};
+    const size_t buffer_count{3};
+    const uint32_t progress_interval_samples{1536000 / 20};

    std::unique_ptr<WAVFileReader> wav_reader{};

@@ -60,10 +80,11 @@ class ViewWavView : public View {
        {{0 * 8, 1 * 16}, "Samplerate:", Color::light_grey()},
        {{0 * 8, 2 * 16}, "Title:", Color::light_grey()},
        {{0 * 8, 3 * 16}, "Duration:", Color::light_grey()},
-        {{0 * 8, 11 * 16}, "Position:   s         Scale:", Color::light_grey()},
-        {{0 * 8, 12 * 16}, "Cursor A:", Color::dark_cyan()},
-        {{0 * 8, 13 * 16}, "Cursor B:", Color::dark_magenta()},
-        {{0 * 8, 14 * 16}, "Delta:", Color::light_grey()}};
+        {{0 * 8, 12 * 16}, "Position:   s         Scale:", Color::light_grey()},
+        {{0 * 8, 13 * 16}, "Cursor A:", Color::dark_cyan()},
+        {{0 * 8, 14 * 16}, "Cursor B:", Color::dark_magenta()},
+        {{0 * 8, 15 * 16}, "Delta:", Color::light_grey()},
+        {{24 * 8, 18 * 16}, "Vol:", Color::light_grey()}};

    Text text_filename{
        {5 * 8, 0 * 16, 12 * 8, 16},
@@ -80,6 +101,13 @@ class ViewWavView : public View {
    Button button_open{
        {24 * 8, 8, 6 * 8, 2 * 16},
        "Open"};
+    ImageButton button_play{
+        {24 * 8, 17 * 16, 2 * 8, 1 * 16},
+        &bitmap_play,
+        Color::green(),
+        Color::black()};
+    AudioVolumeField field_volume{
+        {28 * 8, 18 * 16}};

    Waveform waveform{
        {0, 5 * 16, 240, 64},
@@ -89,34 +117,29 @@ class ViewWavView : public View {
        false,
        Color::white()};

+    ProgressBar progressbar{
+        {0 * 8, 11 * 16, 30 * 8, 8}};
+
    NumberField field_pos_seconds{
-        {9 * 8, 11 * 16},
+        {9 * 8, 12 * 16},
        3,
        {0, 999},
        1,
        ' '};
    NumberField field_pos_samples{
-        {14 * 8, 11 * 16},
+        {14 * 8, 12 * 16},
        6,
        {0, 999999},
        1,
        '0'};
    NumberField field_scale{
-        {28 * 8, 11 * 16},
+        {28 * 8, 12 * 16},
        2,
        {1, 40},
        1,
        ' '};

    NumberField field_cursor_a{
-        {9 * 8, 12 * 16},
-        3,
-        {0, 239},
-        1,
-        ' ',
-        true};
-
-    NumberField field_cursor_b{
        {9 * 8, 13 * 16},
        3,
        {0, 239},
@@ -124,9 +147,40 @@ class ViewWavView : public View {
        ' ',
        true};

+    NumberField field_cursor_b{
+        {9 * 8, 14 * 16},
+        3,
+        {0, 239},
+        1,
+        ' ',
+        true};
+
    Text text_delta{
-        {6 * 8, 14 * 16, 30 * 8, 16},
+        {7 * 8, 15 * 16, 30 * 8, 16},
        "-"};
+
+    MessageHandlerRegistration message_handler_replay_thread_error{
+        Message::ID::ReplayThreadDone,
+        [this](const Message* const p) {
+            const auto message = *reinterpret_cast<const ReplayThreadDoneMessage*>(p);
+            this->handle_replay_thread_done(message.return_code);
+        }};
+
+    MessageHandlerRegistration message_handler_fifo_signal{
+        Message::ID::RequestSignal,
+        [this](const Message* const p) {
+            const auto message = static_cast<const RequestSignalMessage*>(p);
+            if (message->signal == RequestSignalMessage::Signal::FillRequest) {
+                this->set_ready();
+            }
+        }};
+
+    MessageHandlerRegistration message_handler_tx_progress{
+        Message::ID::TXProgress,
+        [this](const Message* const p) {
+            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
+            this->on_playback_progress(message.progress);
+        }};
 };

 } /* namespace ui */
@@ -211,6 +211,7 @@ void set_audiotx_config(
    const float deviation_hz,
    const float audio_gain,
    uint8_t audio_shift_bits_s16,
+    uint8_t bits_per_sample,
    const uint32_t tone_key_delta,
    const bool am_enabled,
    const bool dsb_enabled,
@@ -221,6 +222,7 @@ void set_audiotx_config(
        deviation_hz,
        audio_gain,
        audio_shift_bits_s16,
+        bits_per_sample,
        tone_key_delta,
        (float)persistent_memory::tone_mix() / 100.0f,
        am_enabled,
@@ -63,7 +63,7 @@ void set_tone(const uint32_t index, const uint32_t delta, const uint32_t duratio
 void set_tones_config(const uint32_t bw, const uint32_t pre_silence, const uint16_t tone_count, const bool dual_tone, const bool audio_out);
 void kill_tone();
 void set_sstv_data(const uint8_t vis_code, const uint32_t pixel_duration);
-void set_audiotx_config(const uint32_t divider, const float deviation_hz, const float audio_gain, uint8_t audio_shift_bits_s16, const uint32_t tone_key_delta, const bool am_enabled, const bool dsb_enabled, const bool usb_enabled, const bool lsb_enabled);
+void set_audiotx_config(const uint32_t divider, const float deviation_hz, const float audio_gain, uint8_t audio_shift_bits_s16, uint8_t bits_per_sample, const uint32_t tone_key_delta, const bool am_enabled, const bool dsb_enabled, const bool usb_enabled, const bool lsb_enabled);
 void set_fifo_data(const int8_t* data);
 void set_pitch_rssi(int32_t avg, bool enabled);
 void set_afsk_data(const uint32_t afsk_samples_per_bit, const uint32_t afsk_phase_inc_mark, const uint32_t afsk_phase_inc_space, const uint8_t afsk_repeat, const uint32_t afsk_bw, const uint8_t symbol_count);
@@ -27,14 +27,19 @@
 void config_mode_blink_until_dfu();

 void config_mode_set() {
-    portapack::persistent_memory::set_config_mode_storage_direct(CONFIG_MODE_GUARD_VALUE);
+    uint32_t cms = portapack::persistent_memory::config_mode_storage_direct();
+    if ((cms >= CONFIG_MODE_GUARD_VALUE) && (cms < CONFIG_MODE_LIMIT_VALUE))
+        cms += 1;
+    else
+        cms = CONFIG_MODE_GUARD_VALUE;
+    portapack::persistent_memory::set_config_mode_storage_direct(cms);
 }

 bool config_mode_should_enter() {
    if (portapack::persistent_memory::config_disable_config_mode_direct())
        return false;
    else
-        return portapack::persistent_memory::config_mode_storage_direct() == CONFIG_MODE_GUARD_VALUE;
+        return portapack::persistent_memory::config_mode_storage_direct() == CONFIG_MODE_LIMIT_VALUE;
 }

 void config_mode_clear() {
@@ -28,6 +28,13 @@
 #include "portapack_shared_memory.hpp"
 #include "portapack_persistent_memory.hpp"

+// number of boot failures before entering config menu mode
+#define BOOT_FAILURES_BEFORE_CONFIG_MODE 3
+
+#define CONFIG_MODE_GUARD_VALUE 0xbadb0000
+#define CONFIG_MODE_LIMIT_VALUE (CONFIG_MODE_GUARD_VALUE + BOOT_FAILURES_BEFORE_CONFIG_MODE - 1)
+#define CONFIG_MODE_NORMAL_VALUE 0x000007cf
+
 void config_mode_set();
 bool config_mode_should_enter();
 void config_mode_clear();
@@ -54,6 +54,11 @@ set(EXTCPPSRC
 	external/spainter/ui_spectrum_painter.cpp
 	external/spainter/ui_spectrum_painter_text.cpp
 	external/spainter/ui_spectrum_painter_image.cpp
+
+	#keyfob
+	external/keyfob/main.cpp
+	external/keyfob/ui_keyfob.cpp
+	external/keyfob/ui_keyfob.hpp
 )

 set(EXTAPPLIST
@@ -70,4 +75,5 @@ set(EXTAPPLIST
 	jammer
 	gpssim
 	spainter
+	keyfob
 )
@@ -30,6 +30,7 @@ MEMORY
    ram_external_app_jammer(rwx) : org = 0xEEF30000, len = 32k
    ram_external_app_gpssim(rwx) : org = 0xEEF40000, len = 32k
    ram_external_app_spainter(rwx) : org = 0xEEF50000, len = 32k
+    ram_external_app_keyfob(rwx) : org = 0xEEF60000, len = 32k
 }

 SECTIONS
@@ -116,4 +117,10 @@ SECTIONS
        *(*ui*external_app*spainter*);
    } > ram_external_app_spainter

+    .external_app_keyfob : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_keyfob.application_information));
+        *(*ui*external_app*keyfob*);
+    } > ram_external_app_keyfob
+
 }
@@ -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_keyfob.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::keyfob {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<KeyfobView>();
+}
+}  // namespace ui::external_app::keyfob
+
+extern "C" {
+
+__attribute__((section(".external_app.app_keyfob.application_information"), used)) application_information_t _application_information_keyfob = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::keyfob::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Keyfob",
+    /*.bitmap_data = */ {
+        0x30,
+        0x00,
+        0x30,
+        0x00,
+        0x30,
+        0x00,
+        0x30,
+        0x00,
+        0x30,
+        0x00,
+        0x30,
+        0x00,
+        0xFC,
+        0x00,
+        0xCE,
+        0x01,
+        0x86,
+        0x01,
+        0xFE,
+        0x01,
+        0x86,
+        0x31,
+        0x86,
+        0x49,
+        0xCE,
+        0x87,
+        0xFC,
+        0x84,
+        0xFC,
+        0x4B,
+        0x78,
+        0x30,
+    },
+    /*.icon_color = */ ui::Color::orange().v,
+    /*.menu_location = */ app_location_t::TX,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_keyfob */ {'P', 'O', 'O', 'K'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
@@ -27,7 +27,7 @@

 using namespace portapack;

-namespace ui {
+namespace ui::external_app::keyfob {

 uint8_t KeyfobView::subaru_get_checksum() {
    uint8_t checksum = 0;
@@ -239,4 +239,4 @@ KeyfobView::KeyfobView(
    };
 }

-} /* namespace ui */
+} /* namespace ui::external_app::keyfob */
@@ -29,7 +29,7 @@

 using namespace encoders;

-namespace ui {
+namespace ui::external_app::keyfob {

 class KeyfobView : public View {
   public:
@@ -126,4 +126,4 @@ class KeyfobView : public View {
        }};
 };

-} /* namespace ui */
+} /* namespace ui::external_app::keyfob */
@@ -13,8 +13,8 @@ typedef uint8_t byte;
 typedef uint32_t word;

 byte SPEED = 2;
-byte MAXLIFES = 5;
-byte LIFES = START_LIFES;
+byte MAXLIFES = 20;
+size_t LIFES = START_LIFES;
 byte GAMEWIN = 0;
 byte GAMEOVER = 0;
 byte DEMO = 1;
@@ -25,6 +25,9 @@ byte GAMEPAUSED = 0;

 byte PACMANFALLBACK = 0;

+bool cheat_level = false;
+bool cheat_lifes = false;
+
 #include "DrawIndexedMap.h"

 /******************************************************************************/
@@ -901,14 +904,15 @@ class Playfield {

    void PackmanDied() {  // Noooo... PACMAN DIED :(

-        if (LIFES <= 0) {
+        if (LIFES <= 0 && !cheat_lifes) {
            GAMEOVER = 1;
            LEVEL = START_LEVEL;
            LIFES = START_LIFES;
            DEMO = 1;
            Init();
        } else {
-            LIFES--;
+            if (!cheat_lifes)
+                LIFES--;

            _inited = true;
            _state = ReadyState;
@@ -934,8 +938,14 @@ class Playfield {
                _icons[13 - i] = BONUSICON + i;
            }

-            for (byte i = 0; i < LIFES; i++) {
-                _icons[0 + i] = PACMANICON;
+            if (!cheat_lifes) {
+                for (byte i = 0; i < LIFES; i++) {
+                    _icons[0 + i] = PACMANICON;
+                }
+            } else {
+                for (byte i = 0; i < 14; i++) {
+                    _icons[0 + i] = PACMANICON;
+                }
            }

            // Draw LIFE and BONUS Icons
@@ -1177,8 +1187,13 @@ class Playfield {
        if (GAMEWIN == 1) {
            GAMEWIN = 0;
        } else {
-            LEVEL = START_LEVEL;
-            LIFES = START_LIFES;
+            if (!cheat_level) {
+                LEVEL = START_LEVEL;
+            }
+            if (!cheat_lifes) {
+                LIFES = START_LIFES;
+            }
+
            ACTUALBONUS = 0;  // actual bonus icon
            ACTIVEBONUS = 0;  // status of bonus

@@ -1215,8 +1230,14 @@ class Playfield {
        }

        // SET Lifes icons
-        for (byte i = 0; i < LIFES; i++) {
-            _icons[0 + i] = PACMANICON;
+        if (cheat_lifes) {
+            for (byte i = 0; i < 14; i++) {  // cuz 14 lives full fills PP's screen
+                _icons[0 + i] = PACMANICON;
+            }
+        } else {
+            for (byte i = 0; i < LIFES; i++) {
+                _icons[0 + i] = PACMANICON;
+            }
        }

        // Draw LIFE and BONUS Icons
@@ -1243,21 +1264,45 @@ class Playfield {
    }

    void Step() {
-        int16_t keys = 0;
-
        if (GAMEWIN == 1) {
+            cheat_level = false;
+            cheat_lifes = false;
            LEVEL++;
            Init();
        }

        // Start GAME
-        if (but_A && DEMO == 1 && GAMEPAUSED == 0) {
+        if (but_A && DEMO == 1 && GAMEPAUSED == 0) {  // start
            but_A = false;
-            DEMO = 0;
            Init();
-        } else if (but_A && DEMO == 0 && GAMEPAUSED == 0) {  // Or PAUSE GAME
+            DEMO = 0;
+        } else if (but_A && DEMO == 0 && GAMEPAUSED == 0) {  // pause
            but_A = false;
            GAMEPAUSED = 1;
+        } else if (but_LEFT && DEMO == 1 && GAMEPAUSED == 0) {  // -level
+            cheat_level = true;
+            but_LEFT = false;
+            if (LEVEL > 1) {
+                LEVEL--;
+            }
+            Init();
+        } else if (but_RIGHT && DEMO == 1 && GAMEPAUSED == 0) {  // +level
+            cheat_level = true;
+            but_RIGHT = false;
+            if (LEVEL < 255) {
+                LEVEL++;
+            }
+            Init();
+        } else if (but_UP && DEMO == 1 && GAMEPAUSED == 0) {  // full of lifes
+            cheat_lifes = true;
+            but_UP = false;
+            Init();
+        } else if (but_DOWN && DEMO == 1 && GAMEPAUSED == 0) {  // reset
+            cheat_level = false;
+            cheat_lifes = false;
+            but_DOWN = false;
+            LIFES = START_LIFES;
+            Init();
        }

        if (GAMEPAUSED && but_A && DEMO == 0) {
@@ -25,7 +25,7 @@
 #include "utility.hpp"

 uint8_t Debounce::state() {
-    bool v = state_to_report_;
+    uint8_t v = state_to_report_;
    simulated_pulse_ = false;
    return v;
 }
@@ -149,3 +149,24 @@ bool Debounce::feed(const uint8_t bit) {

    return false;
 }
+
+uint8_t EncoderDebounce::state() {
+    return state_;
+}
+
+// Returns TRUE if encoder position phase bits changed (after debouncing)
+bool EncoderDebounce::feed(const uint8_t phase_bits) {
+    history_ = (history_ << 2) | phase_bits;
+
+    // Has input been constant for 4 ticks? (phase_bits * 01010101b should be 0x00, 0x55, 0xAA, or 0xFF)
+    if (history_ == (phase_bits * 0x55)) {
+        // Has the debounced input value changed?
+        if (state_ != phase_bits) {
+            state_ = phase_bits;
+            return true;
+        }
+    }
+
+    // Unstable input, or no change
+    return false;
+}
@@ -64,4 +64,16 @@ class Debounce {
    bool long_press_occurred_{false};  // TRUE when button is being held down and LONG_PRESS_DELAY has been reached (only when long_press_enabled)
 };

+class EncoderDebounce {
+   public:
+    bool feed(const uint8_t phase_bits);  // returns TRUE if state changed after debouncing
+
+    uint8_t state();  // returns debounced phase bits from encoder
+
+   private:
+    uint8_t history_{0};  // shift register of previous reads from encoder
+
+    uint8_t state_{0};  // actual encoder output state (after debounce logic)
+};
+
 #endif /*__DEBOUNCE_H__*/
@@ -94,13 +94,8 @@ static const int8_t transition_map[][16] = {
    },
 };

-int_fast8_t Encoder::update(
-    const uint_fast8_t phase_0,
-    const uint_fast8_t phase_1) {
-    state <<= 1;
-    state |= phase_0;
-    state <<= 1;
-    state |= phase_1;
+int_fast8_t Encoder::update(const uint_fast8_t phase_bits) {
+    state = (state << 2) | phase_bits;

    // dial sensitivity setting is stored in pmem
    return transition_map[portapack::persistent_memory::config_encoder_dial_sensitivity()][state & 0xf];
@@ -26,9 +26,7 @@

 class Encoder {
   public:
-    int_fast8_t update(
-        const uint_fast8_t phase_0,
-        const uint_fast8_t phase_1);
+    int_fast8_t update(const uint_fast8_t phase_bits);

   private:
    uint_fast8_t state{0};
@@ -33,10 +33,10 @@ namespace max283x {
 namespace lo {

 constexpr std::array<rf::FrequencyRange, 4> band{{
-    {2300000000, 2400000000},
+    {2170000000, 2400000000},
    {2400000000, 2500000000},
    {2500000000, 2600000000},
-    {2600000000, 2700000000},
+    {2600000000, 2740000000},
 }};

 } /* namespace lo */
@@ -48,11 +48,6 @@ namespace lna {
 constexpr range_t<int8_t> gain_db_range{0, 40};
 constexpr int8_t gain_db_step = 8;

-constexpr std::array<rf::FrequencyRange, 2> band{{
-    {2300000000, 2500000000},
-    {2500000000, 2700000000},
-}};
-
 } /* namespace lna */

 /*************************************************************************/
@@ -43,7 +43,7 @@ static Thread* thread_controls_event = NULL;

 // Index with the Switch enum.
 static std::array<Debounce, 6> switch_debounce;
-static std::array<Debounce, 2> encoder_debounce;
+static EncoderDebounce encoder_debounce;

 static_assert(std::size(switch_debounce) == toUType(Switch::Dfu) + 1);

@@ -162,16 +162,12 @@ static bool switches_update(const uint8_t raw) {
 }

 static bool encoder_update(const uint8_t raw) {
-    bool encoder_changed = false;
-
-    encoder_changed |= encoder_debounce[0].feed((raw >> 6) & 0x01);
-    encoder_changed |= encoder_debounce[1].feed((raw >> 7) & 0x01);
-
-    return encoder_changed;
+    // TODO: swap +1/-1 directions in encoder.update() to avoid needless swizzing of phase bits here
+    return encoder_debounce.feed(((raw >> 7) & 0x01) | ((raw >> 5) & 0x02));
 }

 static bool encoder_read() {
-    auto delta = encoder.update(encoder_debounce[0].state(), encoder_debounce[1].state());
+    auto delta = encoder.update(encoder_debounce.state());

    if (injected_encoder > 0) {
        if (injected_encoder == 1) delta = -1;
@@ -411,6 +411,7 @@ bool init() {

    /* Cache some configuration data from persistent memory. */
    persistent_memory::cache::init();
+    rtc_time::dst_init();
    chThdSleepMilliseconds(10);

    clock_manager.init_clock_generator();
@@ -184,11 +184,13 @@ bool set_tuning_frequency(const rf::Frequency frequency) {
    if (tuning_config.is_valid()) {
        first_if.disable();

+        // Program first local oscillator frequency (if there is one) into RFFC507x
        if (tuning_config.first_lo_frequency) {
            first_if.set_frequency(tuning_config.first_lo_frequency);
            first_if.enable();
        }

+        // Program second local oscillator frequency into MAX283x
        const auto result_second_if = second_if->set_frequency(tuning_config.second_lo_frequency);

        rf_path.set_band(tuning_config.rf_path_band);
@@ -39,8 +39,8 @@ enum class Direction {

 namespace path {

-constexpr FrequencyRange band_low{0, 2170000000};
-constexpr FrequencyRange band_high{2740000000, 7250000000};
+constexpr FrequencyRange band_low{0, 2170'000'000};
+constexpr FrequencyRange band_high{2740'000'000, 7250'000'000};
 constexpr FrequencyRange band_mid{band_low.maximum, band_high.minimum};

 enum class Band {
@@ -1,5 +1,6 @@
 /*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2024 Mark Thompson
 *
 * This file is part of PortaPack.
 *
@@ -20,24 +21,239 @@
 */

 #include "rtc_time.hpp"
+#include "portapack_persistent_memory.hpp"
+
+using namespace portapack;
+namespace pmem = portapack::persistent_memory;

 namespace rtc_time {

 Signal<> signal_tick_second;

+bool dst_enabled{false};
+bool dst_in_range{false};
+uint16_t dst_start_doy;
+uint16_t dst_end_doy;
+uint16_t dst_current_doy{0xFFFF};
+uint16_t dst_current_year{0xFFFF};
+
+static const uint16_t months_with_31 = 0x0AD5;  // Bits represents months with 31 days (bit 0 for January, etc)
+
 void on_tick_second() {
    signal_tick_second.emit();
 }

+// Check if DST is configured and active (called at power-up)
+void dst_init() {
+    rtc::RTC datetime;
+    rtcGetTime(&RTCD1, &datetime);
+    dst_update_date_range(datetime.year(), LPC_RTC->DOY);
+}
+
+// Return current time & date (adjusted for DST if enabled)
 rtc::RTC now() {
    rtc::RTC datetime;
    rtcGetTime(&RTCD1, &datetime);
+    if (dst_enabled) {
+        datetime = dst_adjust_returned_time(datetime);
+    }
    return datetime;
 }

 rtc::RTC now(rtc::RTC& out_datetime) {
    rtcGetTime(&RTCD1, &out_datetime);
+    if (dst_enabled) {
+        out_datetime = dst_adjust_returned_time(out_datetime);
+    }
    return out_datetime;
 }

+// Add 1 hour (spring forward) if needed for DST (called whenever RTC is read if DST is enabled)
+rtc::RTC dst_adjust_returned_time(rtc::RTC& datetime) {
+    // Read day of year from RTC and check for change
+    uint32_t doy = LPC_RTC->DOY;
+
+    // Update DST start/end day-of-year only when year changes, otherwise just check if in range when day changes
+    if (doy != dst_current_doy) {
+        if (datetime.year() != dst_current_year)
+            dst_update_date_range(datetime.year(), doy);
+        else
+            dst_check_date_range(doy);
+    }
+
+    // Not in DST date range
+    if (!dst_in_range)
+        return datetime;
+
+    // Add 1 hour to RTC time
+    uint16_t year = datetime.year();
+    uint8_t month = datetime.month();
+    uint8_t day = datetime.day();
+    uint8_t hour = datetime.hour();
+
+    if (++hour > 23) {
+        hour = 0;
+        if (++day > days_per_month(year, month)) {
+            day = 1;
+            if (++month > 12) {
+                year++;
+            }
+        }
+    }
+    rtc::RTC dst_datetime{year, month, day, hour, datetime.minute(), datetime.second()};
+    return dst_datetime;
+}
+
+// Check if current date is within the DST range (called when date changes)
+void dst_check_date_range(uint16_t doy) {
+    dst_current_doy = doy;
+
+    // Check if date is within DST range
+    // (note that dates are reversed in Southern hemisphere because Summer starts in December)
+    if (dst_start_doy <= dst_end_doy)
+        dst_in_range = ((doy >= dst_start_doy) && (doy < dst_end_doy));
+    else
+        dst_in_range = ((doy >= dst_start_doy) || (doy < dst_end_doy));
+}
+
+// Update DST parameters (called at power-up, when year changes, or DST settings are changed)
+void dst_update_date_range(uint16_t year, uint16_t doy) {
+    dst_enabled = pmem::dst_enabled();
+    if (dst_enabled) {
+        const pmem::dst_config_t dst = pmem::config_dst();
+        dst_current_year = year;
+        dst_start_doy = day_of_year_of_nth_weekday(dst_current_year, dst.b.start_month, dst.b.start_which, dst.b.start_weekday);
+        dst_end_doy = day_of_year_of_nth_weekday(dst_current_year, dst.b.end_month, dst.b.end_which, dst.b.end_weekday);
+
+        dst_check_date_range(doy);
+    } else {
+        dst_in_range = false;
+    }
+}
+
+// Set RTC clock.
+// If the user has enabled DST, the time entered and passed to this function is interpreted as having been adjusted for DST.
+// When DST functionality is enabled in pmem, the value stored in the RTC hardware is non-DST time, and we only fudge the time when read.
+// Thus, it's necessary to subtract an hour before storing it in the RTC if we're in the DST date range.
+// (If RTC is desired to represent UTC, then DST should obviously be disabled in settings.)
+// NB: Firmware should not change RTC without going through this function.
+void set(rtc::RTC& new_datetime) {
+    uint16_t year = new_datetime.year();
+    uint8_t month = new_datetime.month();
+    uint8_t day = new_datetime.day();
+    uint8_t hour = new_datetime.hour();
+
+    // NB: DST code relies on the Day of Year (DOY) value to be initialized in the RTC by firmware (RTC hardware only does increment and wrap)
+    uint16_t doy = day_of_year(year, month, day);
+    dst_update_date_range(year, doy);
+
+    // NB: Currently we only support the DST transition at midnight RTC time (not configurable to hour granularity).
+    // Note on handling the the hour before/after DST time change:
+    //
+    //   If entered hour==0 on dst_start_day:
+    //      Time entered is INVALID due to spring-forward; code below rolls back RTC to last hour of previous day.
+    //
+    //   If entered hour==0 on dst_end_doy:
+    //      This hour occurs twice due to fall-back; code below treats as if DST has ended (the second occurrence) and doesn't roll back RTC
+    //
+    if (dst_in_range) {
+        // Subtract 1 hour from requested time before storing in RTC
+        if (hour-- == 0) {
+            hour = 23;
+            if (day-- == 0) {
+                if (month-- == 0) {
+                    month = 12;
+                    year--;
+                }
+                day = days_per_month(year, month);
+            }
+        }
+
+        // Update day-of-year if date was changed above
+        if (day != new_datetime.day()) {
+            doy = day_of_year(year, month, day);
+            dst_update_date_range(year, doy);
+        }
+    }
+
+    // NB: Writing RTC twice takes a second, but ensures that new value can be read back immediately
+    // (if not written twice, the old value will be returned if read back in the following 1-2 seconds)
+    // (you will notice with older Mayhem versions that running the Date/Time Settings app again quickly will show the old time)
+    LPC_RTC->DOY = doy;
+    rtc::RTC adjusted_datetime{year, month, day, hour, new_datetime.minute(), new_datetime.second()};
+    rtcSetTime(&RTCD1, &adjusted_datetime);
+    rtcSetTime(&RTCD1, &adjusted_datetime);
+}
+
+// Calculates 1-based day of year for Nth weekday in month (weekday and n are 0-based, month is 1-based)
+uint16_t day_of_year_of_nth_weekday(uint16_t year, uint8_t month, uint8_t n, uint8_t weekday) {
+    uint8_t w = day_of_week(year, month, 1);
+    uint8_t nn = n;
+
+    // special handling for "last" weekday - are there 4 or 5 in the month?
+    if (n == 4) {
+        if (month == 2) {
+            // February
+            // only weekday w occurs 5 times on the 29th on leap years only
+            if ((weekday != w) || !leap_year(year))
+                nn = 3;
+        } else {
+            // Other months have either 30 or 31 days;
+            // weekdays w and w+1 occur 5 times (on the 29th & 30th); weekday w+2 occurs 5 times only if month has 31 days
+            if ((weekday != w) && (weekday != (w + 1) % 7) &&
+                ((weekday != (w + 2) % 7) || ((months_with_31 & (1 << (month - 1))) == 0)))
+                nn = 3;
+        }
+    }
+    return day_of_year(year, month, 1) + (nn * 7) + weekday + ((weekday < w) ? 7 : 0) - w;
+}
+
+// Calculates 1-based day of year (input month & day are 1-based)
+uint16_t day_of_year(uint16_t year, uint8_t month, uint8_t day) {
+    // 1-based day of year for 1st day or month (index is 1-based month)
+    static uint16_t month_to_day_in_year[1 + 12] = {
+        0,  // placeholder for 1-based indexing
+        1,
+        1 + 31,
+        1 + 31 + 28,
+        1 + 31 + 28 + 31,
+        1 + 31 + 28 + 31 + 30,
+        1 + 31 + 28 + 31 + 30 + 31,
+        1 + 31 + 28 + 31 + 30 + 31 + 30,
+        1 + 31 + 28 + 31 + 30 + 31 + 30 + 31,
+        1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+        1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+        1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+        1 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+    };
+    return month_to_day_in_year[month] + day - (((month > 2) && leap_year(year)) ? 0 : 1);
+}
+
+bool leap_year(uint16_t year) {
+    // Technically should be: ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)
+    // but year 2100 is a long way off and the LPC43xx RTC doesn't bother handling it either
+    return ((year & 3) == 0);
+}
+
+uint8_t days_per_month(uint16_t year, uint8_t month) {
+    if (month == 2)
+        return leap_year(year) ? 29 : 28;
+    else
+        return ((months_with_31 & (1 << (month - 1))) != 0) ? 31 : 30;
+}
+
+uint8_t current_day_of_week() {
+    rtc::RTC datetime;
+    now(datetime);
+    return day_of_week(datetime.year(), datetime.month(), datetime.day());
+}
+
+// Returns 0-based weekday for date (0=Sunday, 1=Monday, etc) - using Zeller's Congruence formula
+// (month and day are 1-based)
+uint8_t day_of_week(uint16_t year, uint8_t month, uint8_t day) {
+    int m = (month < 3) ? month + 13 : month + 1;
+    int y = (month < 3) ? year - 1 : year;
+    return (day - 1 + (13 * m / 5) + y + (y / 4) - (y / 100) + (y / 400)) % 7;
+}
+
 } /* namespace rtc_time */
@@ -33,12 +33,27 @@ extern Signal<> signal_tick_second;

 void on_tick_second();

+/* Sets the current RTCTime in the RTC. */
+void set(rtc::RTC& new_datetime);
+
 /* Returns the current RTCTime from the RTC. */
 rtc::RTC now();

 /* Returns the current RTCTime from the RTC. */
 rtc::RTC now(rtc::RTC& out_datetime);

+/* Daylight Savings Time functions */
+void dst_init();
+rtc::RTC dst_adjust_returned_time(rtc::RTC& datetime);
+void dst_check_date_range(uint16_t doy);
+void dst_update_date_range(uint16_t year, uint16_t doy);
+uint8_t days_per_month(uint16_t year, uint8_t month);
+uint8_t current_day_of_week();
+uint8_t day_of_week(uint16_t year, uint8_t month, uint8_t day);
+bool leap_year(uint16_t year);
+uint16_t day_of_year(uint16_t year, uint8_t month, uint8_t day);
+uint16_t day_of_year_of_nth_weekday(uint16_t year, uint8_t month, uint8_t n, uint8_t weekday);
+
 } /* namespace rtc_time */

 #endif /*__RTC_TIME_H__*/
@@ -185,7 +185,7 @@ std::string to_string_freq(const uint64_t f) {

 // right-justified frequency in MHz, rounded to 4 decimal places, always 9 characters
 std::string to_string_short_freq(const uint64_t f) {
-    auto final_str = to_string_dec_int(f / 1000000, 4) + "." + to_string_dec_int(((f + 50) / 100) % 10000, 4, '0');
+    auto final_str = to_string_dec_int((f + 50) / 1000000, 4) + "." + to_string_dec_int(((f + 50) / 100) % 10000, 4, '0');
    return final_str;
 }

@@ -210,7 +210,7 @@ std::string to_string_rounded_freq(const uint64_t f, int8_t precision) {

        uint32_t divisor = pow10[6 - precision];

-        final_str = to_string_dec_uint(f / 1000000) + "." + to_string_dec_int(((f + (divisor / 2)) / divisor) % pow10[precision], precision, '0');
+        final_str = to_string_dec_uint((f + (divisor / 2)) / 1000000) + "." + to_string_dec_int(((f + (divisor / 2)) / divisor) % pow10[precision], precision, '0');
    }
    return final_str;
 }
@@ -85,7 +85,7 @@ const tone_key_t tone_keys = {
    {"Senn. 32.768k", F2Ix100(32768.0)}};

 std::string fx100_string(uint32_t f) {
-    return to_string_dec_uint(f / 100) + "." + to_string_dec_uint(((f + 5) / 10) % 10);
+    return to_string_dec_uint((f + 5) / 100) + "." + to_string_dec_uint(((f + 5) / 10) % 10);
 }

 float tone_key_frequency(tone_index index) {
@@ -26,44 +26,43 @@
 namespace tuning {
 namespace config {

-namespace {
-
+// Low band <2170 Mhz:
 constexpr rf::Frequency low_band_second_lo_frequency(const rf::Frequency target_frequency) {
-    return 2650000000 - (target_frequency / 7);
-}
-
-constexpr rf::Frequency high_band_second_lo_regions_2_and_3(const rf::Frequency target_frequency) {
-    return (target_frequency < 5100000000)
-               ? (2350000000 + ((target_frequency - 3600000000) / 5))
-               : (2500000000 + ((target_frequency - 5100000000) / 9));
-}
-
-constexpr rf::Frequency high_band_second_lo_frequency(const rf::Frequency target_frequency) {
-    return (target_frequency < 3600000000)
-               ? (2170000000 + (((target_frequency - 2740000000) * 57) / 86))
-               : high_band_second_lo_regions_2_and_3(target_frequency);
+    return 2650'000'000 - (target_frequency / 7);
 }

 Config low_band(const rf::Frequency target_frequency) {
-    const rf::Frequency first_lo_frequency = target_frequency + low_band_second_lo_frequency(target_frequency);
-    const rf::Frequency second_lo_frequency = first_lo_frequency - target_frequency;
+    const rf::Frequency second_lo_frequency = low_band_second_lo_frequency(target_frequency);
+    const rf::Frequency first_lo_frequency = target_frequency + second_lo_frequency;
    const bool mixer_invert = true;
    return {first_lo_frequency, second_lo_frequency, rf::path::Band::Low, mixer_invert};
 }

+// Mid band 2170-2740 Mhz:
 Config mid_band(const rf::Frequency target_frequency) {
-    return {0, target_frequency, rf::path::Band::Mid, false};
+    const rf::Frequency second_lo_frequency = target_frequency;
+    const rf::Frequency first_lo_frequency = 0;
+    const bool mixer_invert = false;
+    return {first_lo_frequency, second_lo_frequency, rf::path::Band::Mid, mixer_invert};
+}
+
+// High band >2740 Mhz:
+constexpr rf::Frequency high_band_second_lo_frequency(const rf::Frequency target_frequency) {
+    if (target_frequency < 3600'000'000)
+        return (2170'000'000 + (((target_frequency - 2740'000'000) * 57) / 86));
+    else if (target_frequency < 5100'000'000)
+        return (2350'000'000 + ((target_frequency - 3600'000'000) / 5));
+    else
+        return (2500'000'000 + ((target_frequency - 5100'000'000) / 9));
 }

 Config high_band(const rf::Frequency target_frequency) {
-    const rf::Frequency first_lo_frequency = target_frequency - high_band_second_lo_frequency(target_frequency);
-    const rf::Frequency second_lo_frequency = target_frequency - first_lo_frequency;
+    const rf::Frequency second_lo_frequency = high_band_second_lo_frequency(target_frequency);
+    const rf::Frequency first_lo_frequency = target_frequency - second_lo_frequency;
    const bool mixer_invert = false;
    return {first_lo_frequency, second_lo_frequency, rf::path::Band::High, mixer_invert};
 }

-} /* namespace */
-
 Config create(const rf::Frequency target_frequency) {
    /* TODO: This is some lame code. */
    if (rf::path::band_low.contains(target_frequency)) {
@@ -498,12 +498,13 @@ void GeoMap::draw_scale(Painter& painter) {
    if (m < 1000) {
        km_string = to_string_dec_uint(m) + "m";
    } else {
+        m += 50;  // (add rounding factor for div by 100 below)
        uint32_t km = m / 1000;
        m -= km * 1000;
        if (m == 0) {
            km_string = to_string_dec_uint(km) + " km";
        } else {
-            km_string = to_string_dec_uint(km) + "." + to_string_dec_uint((m + 50) / 100, 1) + "km";
+            km_string = to_string_dec_uint(km) + "." + to_string_dec_uint(m / 100, 1) + "km";
        }
    }

@@ -107,6 +107,7 @@ namespace ui {

 /* static */ bool ExternalItemsMenuLoader::run_external_app(ui::NavigationView& nav, std::filesystem::path filePath) {
    File app;
+    uint32_t checksum{0};

    auto openError = app.open(filePath);
    if (openError)
@@ -115,7 +116,6 @@ namespace ui {
    application_information_t application_information = {};

    auto readResult = app.read(&application_information, sizeof(application_information_t));
-
    if (!readResult)
        return false;

@@ -135,6 +135,8 @@ namespace ui {
            if (!readResult)
                return false;

+            checksum += simple_checksum((uint32_t)&application_information.memory_location[file_read_index], readResult.value());
+
            if (readResult.value() < std::filesystem::max_file_block_size)
                break;
        }
@@ -156,6 +158,8 @@ namespace ui {
            if (!readResult)
                return false;

+            checksum += simple_checksum((uint32_t)target_memory, readResult.value());
+
            if (readResult.value() != bytes_to_read)
                break;
        }
@@ -168,11 +172,16 @@ namespace ui {
            if (!readResult)
                return false;

+            checksum += simple_checksum((uint32_t)&application_information.memory_location[file_read_index], readResult.value());
+
            if (readResult.value() < std::filesystem::max_file_block_size)
                break;
        }
    }

+    if (checksum != EXT_APP_EXPECTED_CHECKSUM)
+        return false;
+
    application_information.externalAppEntry(nav);
    return true;
 }
@@ -29,6 +29,8 @@

 #include "file.hpp"

+#define EXT_APP_EXPECTED_CHECKSUM 0x00000000
+
 namespace ui {

 template <size_t Width, size_t Height>
@@ -48,7 +48,7 @@
 #include "ui_fsk_rx.hpp"
 #include "ui_iq_trim.hpp"
 // #include "ui_jammer.hpp" //moved to ext
-//  #include "ui_keyfob.hpp"
+//  #include "ui_keyfob.hpp" //moved to ext
 //  #include "ui_lcr.hpp"
 #include "ui_level.hpp"
 #include "ui_looking_glass_app.hpp"
@@ -111,166 +111,108 @@ namespace pmem = portapack::persistent_memory;

 namespace ui {

-// When adding or removing apps from the Menu, please update it here:
-std::vector<AppInfoConsole> NavigationView::fixedAppListFC = {
-    {"adsbrx", "ADS-B", RX},
-    {"ais", "AIS Boats", RX},
-    {"aprsrx", "APRS", RX},
-    {"audio", "Audio", RX},
-    {"blerx", "BLE Rx", RX},
-    {"ert", "ERT Meter", RX},
-    {"level", "Level", RX},
-    {"pocsagrx", "POCSAG", RX},
-    {"radiosnde", "Radiosnde", RX},
-    {"recon", "Recon", RX},
-    {"search", "Search", RX},
-    {"tpms", "TPMS Cars", RX},
-    {"weather", "Weather", RX},
-    {"subghzd", "SubGhzD", RX},
-    {"adsbtx", "ADS-B", TX},
-    {"aprstx", "APRS TX", TX},
-    {"bht", "BHT Xy/EP", TX},
-    {"bletx", "BLE Tx", TX},
-    {"morsetx", "Morse", TX},
-    {"ooktx", "OOK", TX},
-    {"pocsatx", "POCSAG TX", TX},
-    {"rdstx", "RDS TX", TX},
-    {"soundbrd", "Soundbrd", TX},
-    {"sstvtx", "SSTV", TX},
-    {"touchtune", "TouchTune", TX},
-    {"capture", "Capture", RX},
-    {"replay", "Replay", TX},
-    {"remote", "Remote", TX},
-    {"scanner", "Scanner", RX},
-    {"microphone", "Microphone", TX},
-    {"lookingglass", "Looking Glass", RX}};
+bool CstrCmp::operator()(const char* a, const char* b) const {
+    return strcmp(a, b) < 0;
+}
+
+static NavigationView::AppMap generate_app_map(const NavigationView::AppList& appList) {
+    NavigationView::AppMap out;
+
+    for (auto& app : appList) {
+        if (app.id == nullptr) {
+            // Skip items with no id
+            continue;
+        }
+
+        auto res = out.emplace(app.id, app);
+        if (!res.second) {
+            chDbgPanic("Application cannot be added, ID not unique!");
+        }
+    }
+
+    return out;
+}
+
+// TODO(u-foka): Check consistency of command names (where we add rx/tx postfix)
+const NavigationView::AppList NavigationView::appList = {
+    /* HOME ******************************************************************/
+    //{"playdead", "Play dead", HOME, Color::red(), &bitmap_icon_playdead, new ViewFactory<PlayDeadView>()},
+    {nullptr, "Receive", HOME, Color::cyan(), &bitmap_icon_receivers, new ViewFactory<ReceiversMenuView>()},
+    {nullptr, "Transmit", HOME, Color::cyan(), &bitmap_icon_transmit, new ViewFactory<TransmittersMenuView>()},
+    {"capture", "Capture", HOME, Color::red(), &bitmap_icon_capture, new ViewFactory<CaptureAppView>()},
+    {"replay", "Replay", HOME, Color::green(), &bitmap_icon_replay, new ViewFactory<PlaylistView>()},
+    {"remote", "Remote", HOME, ui::Color::green(), &bitmap_icon_remote, new ViewFactory<RemoteView>()},
+    {"scanner", "Scanner", HOME, Color::green(), &bitmap_icon_scanner, new ViewFactory<ScannerView>()},
+    {"microphone", "Microphone", HOME, Color::green(), &bitmap_icon_microphone, new ViewFactory<MicTXView>()},
+    {"lookingglass", "Looking Glass", HOME, Color::green(), &bitmap_icon_looking, new ViewFactory<GlassView>()},
+    {nullptr, "Utilities", HOME, Color::cyan(), &bitmap_icon_utilities, new ViewFactory<UtilitiesMenuView>()},
+    {nullptr, "Settings", HOME, Color::cyan(), &bitmap_icon_setup, new ViewFactory<SettingsMenuView>()},
+    {nullptr, "Debug", HOME, Color::light_grey(), &bitmap_icon_debug, new ViewFactory<DebugMenuView>()},
+    //{"about", "About", HOME, Color::cyan(), nullptr, new ViewFactory<AboutView>()},
+    /* RX ********************************************************************/
+    //{"acars", "ACARS", RX, Color::yellow(), &bitmap_icon_adsb, new ViewFactory<ACARSAppView>()},
+    {"adsbrx", "ADS-B", RX, Color::green(), &bitmap_icon_adsb, new ViewFactory<ADSBRxView>()},
+    {"ais", "AIS Boats", RX, Color::green(), &bitmap_icon_ais, new ViewFactory<AISAppView>()},
+    {"aprsrx", "APRS", RX, Color::green(), &bitmap_icon_aprs, new ViewFactory<APRSRXView>()},
+    {"audio", "Audio", RX, Color::green(), &bitmap_icon_speaker, new ViewFactory<AnalogAudioView>()},
+    //{"btle", "BTLE", RX, Color::yellow(), &bitmap_icon_btle, new ViewFactory<BTLERxView>()},
+    //{"blecomm", "BLE Comm", RX, ui::Color::orange(), &bitmap_icon_btle, new ViewFactory<BLECommView>()},
+    {"blerx", "BLE Rx", RX, Color::green(), &bitmap_icon_btle, new ViewFactory<BLERxView>()},
+    {"ert", "ERT Meter", RX, Color::green(), &bitmap_icon_ert, new ViewFactory<ERTAppView>()},
+    {"level", "Level", RX, Color::green(), &bitmap_icon_options_radio, new ViewFactory<LevelView>()},
+    {"pocsag", "POCSAG", RX, Color::green(), &bitmap_icon_pocsag, new ViewFactory<POCSAGAppView>()},
+    {"radiosonde", "Radiosnde", RX, Color::green(), &bitmap_icon_sonde, new ViewFactory<SondeView>()},
+    {"recon", "Recon", RX, Color::green(), &bitmap_icon_scanner, new ViewFactory<ReconView>()},
+    {"search", "Search", RX, Color::yellow(), &bitmap_icon_search, new ViewFactory<SearchView>()},
+    {"tmps", "TPMS Cars", RX, Color::green(), &bitmap_icon_tpms, new ViewFactory<TPMSAppView>()},
+    {"weather", "Weather", RX, Color::green(), &bitmap_icon_thermometer, new ViewFactory<WeatherView>()},
+    {"subghzd", "SubGhzD", RX, Color::yellow(), &bitmap_icon_remote, new ViewFactory<SubGhzDView>()},
+    //{"fskrx", "FSK RX", RX, Color::yellow(), &bitmap_icon_remote, new ViewFactory<FskxRxMainView>()},
+    //{"dmr", "DMR", RX, Color::dark_grey(), &bitmap_icon_dmr, new ViewFactory<NotImplementedView>()},
+    //{"sigfox", "SIGFOX", RX, Color::dark_grey(), &bitmap_icon_fox, new ViewFactory<NotImplementedView>()},
+    //{"lora", "LoRa", RX, Color::dark_grey(), &bitmap_icon_lora, new ViewFactory<NotImplementedView>()},
+    //{"sstv", "SSTV", RX, Color::dark_grey(), &bitmap_icon_sstv, new ViewFactory<NotImplementedView>()},
+    //{"tetra", "TETRA", RX, Color::dark_grey(), &bitmap_icon_tetra, new ViewFactory<NotImplementedView>()},
+    /* TX ********************************************************************/
+    {"adsbtx", "ADS-B TX", TX, ui::Color::green(), &bitmap_icon_adsb, new ViewFactory<ADSBTxView>()},
+    {"aprstx", "APRS TX", TX, ui::Color::green(), &bitmap_icon_aprs, new ViewFactory<APRSTXView>()},
+    {"bht", "BHT Xy/EP", TX, ui::Color::green(), &bitmap_icon_bht, new ViewFactory<BHTView>()},
+    {"bletx", "BLE Tx", TX, ui::Color::green(), &bitmap_icon_btle, new ViewFactory<BLETxView>()},
+    {"morse", "Morse", TX, ui::Color::green(), &bitmap_icon_morse, new ViewFactory<MorseView>()},
+    //{"nuoptixdtmf", "Nuoptix DTMF", TX, ui::Color::green(), &bitmap_icon_nuoptix, new ViewFactory<NuoptixView>()},
+    {"ooktx", "OOK", TX, ui::Color::yellow(), &bitmap_icon_remote, new ViewFactory<EncodersView>()},
+    {"pocsagtx", "POCSAG TX", TX, ui::Color::green(), &bitmap_icon_pocsag, new ViewFactory<POCSAGTXView>()},
+    {"rdstx", "RDS", TX, ui::Color::green(), &bitmap_icon_rds, new ViewFactory<RDSView>()},
+    {"soundbrd", "Soundbrd", TX, ui::Color::green(), &bitmap_icon_soundboard, new ViewFactory<SoundBoardView>()},
+    {"sstvtx", "SSTV", TX, ui::Color::green(), &bitmap_icon_sstv, new ViewFactory<SSTVTXView>()},
+    {"touchtune", "TouchTune", TX, ui::Color::green(), &bitmap_icon_touchtunes, new ViewFactory<TouchTunesView>()},
+    /* UTILITIES *************************************************************/
+    {"antennalength", "Antenna Length", UTILITIES, Color::green(), &bitmap_icon_tools_antenna, new ViewFactory<WhipCalcView>()},
+    {"filemanager", "File Manager", UTILITIES, Color::green(), &bitmap_icon_dir, new ViewFactory<FileManagerView>()},
+    {"freqman", "Freq. Manager", UTILITIES, Color::green(), &bitmap_icon_freqman, new ViewFactory<FrequencyManagerView>()},
+    {"notepad", "Notepad", UTILITIES, Color::dark_cyan(), &bitmap_icon_notepad, new ViewFactory<TextEditorView>()},
+    {"iqtrim", "IQ Trim", UTILITIES, Color::orange(), &bitmap_icon_trim, new ViewFactory<IQTrimView>()},
+    {nullptr, "SD Over USB", UTILITIES, Color::yellow(), &bitmap_icon_hackrf, new ViewFactory<SdOverUsbView>()},
+    {"signalgen", "Signal Gen", UTILITIES, Color::green(), &bitmap_icon_cwgen, new ViewFactory<SigGenView>()},
+    //{"testapp", "Test App", UTILITIES, Color::dark_grey(), nullptr, new ViewFactory<TestView>()},
+    //{"tonesearch", "Tone Search", UTILITIES, Color::dark_grey(), nullptr, new ViewFactory<ToneSearchView>()},
+    {"wavview", "Wav View", UTILITIES, Color::yellow(), &bitmap_icon_soundboard, new ViewFactory<ViewWavView>()},
+    // Dangerous apps.
+    {nullptr, "Flash Utility", UTILITIES, Color::red(), &bitmap_icon_temperature, new ViewFactory<FlashUtilityView>()},
+    {nullptr, "Wipe SD card", UTILITIES, Color::red(), &bitmap_icon_tools_wipesd, new ViewFactory<WipeSDView>()},
+};
+
+const NavigationView::AppMap NavigationView::appMap = generate_app_map(NavigationView::appList);

 bool NavigationView::StartAppByName(const char* name) {
    home(false);
-    if (strcmp(name, "adsbrx") == 0) {
-        push<ADSBRxView>();
-        return true;
-    }
-    if (strcmp(name, "ais") == 0) {
-        push<AISAppView>();
-        return true;
-    }
-    if (strcmp(name, "aprsrx") == 0) {
-        push<APRSRXView>();
-        return true;
-    }
-    if (strcmp(name, "audio") == 0) {
-        push<AnalogAudioView>();
-        return true;
-    }
-    if (strcmp(name, "blerx") == 0) {
-        push<BLERxView>();
-        return true;
-    }
-    if (strcmp(name, "ert") == 0) {
-        push<ERTAppView>();
-        return true;
-    }
-    if (strcmp(name, "level") == 0) {
-        push<LevelView>();
-        return true;
-    }
-    if (strcmp(name, "pocsagrx") == 0) {
-        push<POCSAGAppView>();
-        return true;
-    }
-    if (strcmp(name, "radiosnode") == 0) {
-        push<SondeView>();
-        return true;
-    }
-    if (strcmp(name, "recon") == 0) {
-        push<ReconView>();
-        return true;
-    }
-    if (strcmp(name, "search") == 0) {
-        push<SearchView>();
-        return true;
-    }
-    if (strcmp(name, "tpms") == 0) {
-        push<TPMSAppView>();
-        return true;
-    }
-    if (strcmp(name, "weather") == 0) {
-        push<WeatherView>();
-        return true;
-    }
-    if (strcmp(name, "subghzd") == 0) {
-        push<SubGhzDView>();
-        return true;
-    }
-    if (strcmp(name, "adsbtx") == 0) {
-        push<ADSBTxView>();
-        return true;
-    }
-    if (strcmp(name, "aprstx") == 0) {
-        push<APRSTXView>();
-        return true;
-    }
-    if (strcmp(name, "bht") == 0) {
-        push<BHTView>();
-        return true;
-    }
-    if (strcmp(name, "bletx") == 0) {
-        push<BLETxView>();
-        return true;
-    }
-    if (strcmp(name, "morsetx") == 0) {
-        push<MorseView>();
-        return true;
-    }
-    if (strcmp(name, "ooktx") == 0) {
-        push<EncodersView>();
-        return true;
-    }
-    if (strcmp(name, "pocsatx") == 0) {
-        push<POCSAGTXView>();
-        return true;
-    }
-    if (strcmp(name, "rdstx") == 0) {
-        push<RDSView>();
-        return true;
-    }
-    if (strcmp(name, "soundbrd") == 0) {
-        push<SoundBoardView>();
-        return true;
-    }
-    if (strcmp(name, "sstvtx") == 0) {
-        push<SSTVTXView>();
-        return true;
-    }
-    if (strcmp(name, "touchtune") == 0) {
-        push<TouchTunesView>();
-        return true;
-    }
-    if (strcmp(name, "capture") == 0) {
-        push<CaptureAppView>();
-        return true;
-    }
-    if (strcmp(name, "replay") == 0) {
-        push<PlaylistView>();
-        return true;
-    }
-    if (strcmp(name, "remote") == 0) {
-        push<RemoteView>();
-        return true;
-    }
-    if (strcmp(name, "scanner") == 0) {
-        push<ScannerView>();
-        return true;
-    }
-    if (strcmp(name, "microphone") == 0) {
-        push<MicTXView>();
-        return true;
-    }
-    if (strcmp(name, "lookingglass") == 0) {
-        push<GlassView>();
+
+    auto it = appMap.find(name);
+    if (it != appMap.end()) {
+        push_view(std::unique_ptr<View>(it->second.viewFactory->produce(*this)));
        return true;
    }
+
    return false;
 }

@@ -373,8 +315,15 @@ SystemStatusView::SystemStatusView(
        refresh();
    };

-    toggle_stealth.on_change = [this](bool v) {
+    toggle_stealth.on_change = [this, &nav](bool v) {
        pmem::set_stealth_mode(v);
+        if (nav.is_valid() && v) {
+            nav.display_modal(
+                "Stealth",
+                "You just enabled stealth mode.\n"
+                "When you transmit,\n"
+                "screen will turn off;\n");
+        }
        refresh();
    };

@@ -561,8 +510,8 @@ void SystemStatusView::rtc_battery_workaround() {
            month = (timestamp.FAT_date >> 5) & 0xF;
            day = timestamp.FAT_date & 0x1F;

-            // bump to next month at 28 days for simplicity
-            if (++day > 28) {
+            // bump to next month
+            if (++day > rtc_time::days_per_month(year, month)) {
                day = 1;
                if (++month > 12) {
                    month = 1;
@@ -605,16 +554,16 @@ InformationView::InformationView(
                  &ltime});

 #if GCC_VERSION_MISMATCH
-    static constexpr Style style_gcc_warning{
-        .font = font::fixed_8x16,
-        .background = {33, 33, 33},
-        .foreground = Color::yellow(),
-    };
-    version.set_style(&style_gcc_warning);
+    version.set_style(&Styles::yellow);
 #else
    version.set_style(&style_infobar);
 #endif

+    if (firmware_checksum_error()) {
+        version.set("FLASH ERR");
+        version.set_style(&Styles::red);
+    }
+
    ltime.set_style(&style_infobar);
    refresh();
    set_dirty();
@@ -626,12 +575,27 @@ void InformationView::refresh() {
    ltime.set_date_enabled(pmem::clock_with_date());
 }

+bool InformationView::firmware_checksum_error() {
+    static bool fw_checksum_checked{false};
+    static bool fw_checksum_error{false};
+
+    // only checking firmware checksum once per boot
+    if (!fw_checksum_checked) {
+        fw_checksum_error = (simple_checksum(FLASH_STARTING_ADDRESS, FLASH_ROM_SIZE) != FLASH_EXPECTED_CHECKSUM);
+    }
+    return fw_checksum_error;
+}
+
 /* Navigation ************************************************************/

 bool NavigationView::is_top() const {
    return view_stack.size() == 1;
 }

+bool NavigationView::is_valid() const {
+    return view_stack.size() != 0;  // work around to check if nav is valid, not elegant i know. so TODO
+}
+
 View* NavigationView::push_view(std::unique_ptr<View> new_view) {
    free_view();

@@ -727,43 +691,47 @@ bool NavigationView::set_on_pop(std::function<void()> on_pop) {
    return true;
 }

+/* Helpers  **************************************************************/
+
+static void add_apps(NavigationView& nav, BtnGridView& grid, app_location_t loc) {
+    for (auto& app : NavigationView::appList) {
+        if (app.menuLocation == loc) {
+            grid.add_item({app.displayName, app.iconColor, app.icon,
+                           [&nav, &app]() { nav.push_view(std::unique_ptr<View>(app.viewFactory->produce(nav))); }});
+        }
+    };
+}
+
+void addExternalItems(NavigationView& nav, app_location_t location, BtnGridView& grid) {
+    auto externalItems = ExternalItemsMenuLoader::load_external_items(location, nav);
+    if (externalItems.empty()) {
+        grid.add_item({"Notice",
+                       Color::red(),
+                       &bitmap_icon_debug,
+                       [&nav]() {
+                           nav.display_modal(
+                               "Notice",
+                               "External app directory empty;\n"
+                               "see Mayhem wiki and copy apps\n"
+                               "to APPS folder of SD card.");
+                       }});
+    } else {
+        for (auto const& gridItem : externalItems) {
+            grid.add_item(gridItem);
+        }
+    }
+}
+
 /* ReceiversMenuView *****************************************************/

 ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
    if (pmem::show_gui_return_icon()) {
-        add_items({{"..", Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }}});
+        add_item({"..", Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }});
    }
-    add_items({
-        // {"ACARS", Color::yellow(), &bitmap_icon_adsb, [&nav](){ nav.push<ACARSAppView>(); }},
-        {"ADS-B", Color::green(), &bitmap_icon_adsb, [&nav]() { nav.push<ADSBRxView>(); }},
-        {"AIS Boats", Color::green(), &bitmap_icon_ais, [&nav]() { nav.push<AISAppView>(); }},
-        //{"Analog TV", Color::yellow(), &bitmap_icon_sstv, [&nav]() { nav.push<AnalogTvView>(); }}, //moved to ext
-        {"APRS", Color::green(), &bitmap_icon_aprs, [&nav]() { nav.push<APRSRXView>(); }},
-        {"Audio", Color::green(), &bitmap_icon_speaker, [&nav]() { nav.push<AnalogAudioView>(); }},
-        //{"BTLE", Color::yellow(), &bitmap_icon_btle, [&nav]() { nav.push<BTLERxView>(); }},
-        //{"BLE Comm", ui::Color::orange(), &bitmap_icon_btle, [&nav]() { nav.push<BLECommView>(); }},
-        {"BLE Rx", Color::green(), &bitmap_icon_btle, [&nav]() { nav.push<BLERxView>(); }},
-        {"ERT Meter", Color::green(), &bitmap_icon_ert, [&nav]() { nav.push<ERTAppView>(); }},
-        {"Level", Color::green(), &bitmap_icon_options_radio, [&nav]() { nav.push<LevelView>(); }},
-        //{"NRF", Color::yellow(), &bitmap_icon_nrf, [&nav]() { nav.push<NRFRxView>(); }}, //moved to ext
-        {"POCSAG", Color::green(), &bitmap_icon_pocsag, [&nav]() { nav.push<POCSAGAppView>(); }},
-        {"Radiosnde", Color::green(), &bitmap_icon_sonde, [&nav]() { nav.push<SondeView>(); }},
-        {"Recon", Color::green(), &bitmap_icon_scanner, [&nav]() { nav.push<ReconView>(); }},
-        {"Search", Color::yellow(), &bitmap_icon_search, [&nav]() { nav.push<SearchView>(); }},
-        {"TPMS Cars", Color::green(), &bitmap_icon_tpms, [&nav]() { nav.push<TPMSAppView>(); }},
-        {"Weather", Color::green(), &bitmap_icon_thermometer, [&nav]() { nav.push<WeatherView>(); }},
-        {"SubGhzD", Color::yellow(), &bitmap_icon_remote, [&nav]() { nav.push<SubGhzDView>(); }},
-        // {"FSK RX", Color::yellow(), &bitmap_icon_remote, [&nav]() { nav.push<FskxRxMainView>(); }},
-        // {"DMR", Color::dark_grey(), &bitmap_icon_dmr, [&nav](){ nav.push<NotImplementedView>(); }},
-        // {"SIGFOX", Color::dark_grey(), &bitmap_icon_fox, [&nav](){ nav.push<NotImplementedView>(); }},
-        // {"LoRa", Color::dark_grey(), &bitmap_icon_lora, [&nav](){ nav.push<NotImplementedView>(); }},
-        // {"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);
-    };
+    add_apps(nav, *this, RX);
+
+    addExternalItems(nav, app_location_t::RX, *this);
 }

 /* TransmittersMenuView **************************************************/
@@ -772,31 +740,10 @@ TransmittersMenuView::TransmittersMenuView(NavigationView& nav) {
    if (pmem::show_gui_return_icon()) {
        add_items({{"..", Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }}});
    }
-    add_items({
-        {"ADS-B TX", ui::Color::green(), &bitmap_icon_adsb, [&nav]() { nav.push<ADSBTxView>(); }},
-        {"APRS TX", ui::Color::green(), &bitmap_icon_aprs, [&nav]() { nav.push<APRSTXView>(); }},
-        {"BHT Xy/EP", ui::Color::green(), &bitmap_icon_bht, [&nav]() { nav.push<BHTView>(); }},
-        {"BLE Tx", ui::Color::green(), &bitmap_icon_btle, [&nav]() { nav.push<BLETxView>(); }},
-        // {"BurgerPgr", ui::Color::yellow(), &bitmap_icon_burger, [&nav]() { nav.push<CoasterPagerView>(); }}, //moved to ext
-        //{"GPS Sim", ui::Color::green(), &bitmap_icon_gps_sim, [&nav]() { nav.push<GpsSimAppView>(); }}, //moved to ext
-        //{"Jammer", ui::Color::green(), &bitmap_icon_jammer, [&nav]() { nav.push<JammerView>(); }}, //moved to ext
-        // { "Key fob", ui::Color::orange(), &bitmap_icon_keyfob, [&nav](){ nav.push<KeyfobView>(); }},
-        // {"LGE", ui::Color::yellow(), &bitmap_icon_lge, [&nav]() { nav.push<LGEView>(); }}, //moved to ext
-        {"Morse", ui::Color::green(), &bitmap_icon_morse, [&nav]() { nav.push<MorseView>(); }},
-        // { "Nuoptix DTMF", ui::Color::green(), &bitmap_icon_nuoptix, [&nav](){ nav.push<NuoptixView>(); }},
-        {"OOK", ui::Color::yellow(), &bitmap_icon_remote, [&nav]() { nav.push<EncodersView>(); }},
-        {"POCSAG TX", ui::Color::green(), &bitmap_icon_pocsag, [&nav]() { nav.push<POCSAGTXView>(); }},
-        {"RDS", ui::Color::green(), &bitmap_icon_rds, [&nav]() { nav.push<RDSView>(); }},
-        {"Soundbrd", ui::Color::green(), &bitmap_icon_soundboard, [&nav]() { nav.push<SoundBoardView>(); }},
-        //{"S.Painter", ui::Color::orange(), &bitmap_icon_paint, [&nav]() { nav.push<SpectrumPainterView>(); }},
-        {"SSTV", ui::Color::green(), &bitmap_icon_sstv, [&nav]() { nav.push<SSTVTXView>(); }},
-        // {"TEDI/LCR", ui::Color::yellow(), &bitmap_icon_lcr, [&nav]() { nav.push<LCRView>(); }}, //moved to ext
-        {"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);
-    };
+    add_apps(nav, *this, TX);
+
+    addExternalItems(nav, app_location_t::TX, *this);
 }

 /* UtilitiesMenuView *****************************************************/
@@ -805,26 +752,10 @@ UtilitiesMenuView::UtilitiesMenuView(NavigationView& nav) {
    if (pmem::show_gui_return_icon()) {
        add_items({{"..", Color::light_grey(), &bitmap_icon_previous, [&nav]() { nav.pop(); }}});
    }
-    add_items({
-        {"Antenna Length", Color::green(), &bitmap_icon_tools_antenna, [&nav]() { nav.push<WhipCalcView>(); }},
-        {"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_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>(); }},
-        // {"Tone Search", Color::dark_grey(), nullptr, [&nav](){ nav.push<ToneSearchView>(); }},
-        {"Wav View", Color::yellow(), &bitmap_icon_soundboard, [&nav]() { nav.push<ViewWavView>(); }},

-        // Dangerous apps.
-        {"Flash Utility", Color::red(), &bitmap_icon_temperature, [&nav]() { nav.push<FlashUtilityView>(); }},
-        {"Wipe SD card", Color::red(), &bitmap_icon_tools_wipesd, [&nav]() { nav.push<WipeSDView>(); }},
-    });
+    add_apps(nav, *this, UTILITIES);

-    for (auto const& gridItem : ExternalItemsMenuLoader::load_external_items(app_location_t::UTILITIES, nav)) {
-        add_item(gridItem);
-    };
+    addExternalItems(nav, app_location_t::UTILITIES, *this);

    set_max_rows(2);  // allow wider buttons
 }
@@ -844,22 +775,9 @@ void SystemMenuView::hackrf_mode(NavigationView& nav) {
 }

 SystemMenuView::SystemMenuView(NavigationView& nav) {
-    add_items({
-        // {"Play dead", Color::red(), &bitmap_icon_playdead, [&nav]() { nav.push<PlayDeadView>(); }},
-        {"Receive", Color::cyan(), &bitmap_icon_receivers, [&nav]() { nav.push<ReceiversMenuView>(); }},
-        {"Transmit", Color::cyan(), &bitmap_icon_transmit, [&nav]() { nav.push<TransmittersMenuView>(); }},
-        {"Capture", Color::red(), &bitmap_icon_capture, [&nav]() { nav.push<CaptureAppView>(); }},
-        {"Replay", Color::green(), &bitmap_icon_replay, [&nav]() { nav.push<PlaylistView>(); }},
-        {"Remote", ui::Color::green(), &bitmap_icon_remote, [&nav]() { nav.push<RemoteView>(); }},
-        {"Scanner", Color::green(), &bitmap_icon_scanner, [&nav]() { nav.push<ScannerView>(); }},
-        {"Microphone", Color::green(), &bitmap_icon_microphone, [&nav]() { nav.push<MicTXView>(); }},
-        {"Looking Glass", Color::green(), &bitmap_icon_looking, [&nav]() { nav.push<GlassView>(); }},
-        {"Utilities", Color::cyan(), &bitmap_icon_utilities, [&nav]() { nav.push<UtilitiesMenuView>(); }},
-        {"Settings", Color::cyan(), &bitmap_icon_setup, [&nav]() { nav.push<SettingsMenuView>(); }},
-        {"Debug", Color::light_grey(), &bitmap_icon_debug, [&nav]() { nav.push<DebugMenuView>(); }},
-        {"HackRF", Color::cyan(), &bitmap_icon_hackrf, [this, &nav]() { hackrf_mode(nav); }},
-        // {"About", Color::cyan(), nullptr, [&nav]() { nav.push<AboutView>(); }},
-    });
+    add_apps(nav, *this, HOME);
+
+    add_item({"HackRF", Color::cyan(), &bitmap_icon_hackrf, [this, &nav]() { hackrf_mode(nav); }});

    set_max_rows(2);  // allow wider buttons
    set_arrow_enabled(false);
@@ -23,6 +23,10 @@
 #ifndef __UI_NAVIGATION_H__
 #define __UI_NAVIGATION_H__

+#include <vector>
+#include <map>
+#include <utility>
+
 #include "ui.hpp"
 #include "ui_widget.hpp"
 #include "ui_focus.hpp"
@@ -41,8 +45,7 @@
 #include "lfsr_random.hpp"
 #include "sd_card.hpp"
 #include "external_app.hpp"
-#include <vector>
-#include <utility>
+#include "view_factory.hpp"

 // for incrementing fake date when RTC battery is dead
 #define DATE_FILEFLAG u"/SETTINGS/DATE_FILEFLAG"
@@ -57,6 +60,22 @@ enum modal_t {
    ABORT
 };

+class CstrCmp {
+   public:
+    bool operator()(const char* a, const char* b) const;
+};
+
+// Should only be used as part of the appList in NavigationView, the viewFactory will never be destroyed.
+class AppInfo {
+   public:
+    const char* id;  // MUST be unique! Used by serial command to start the app so it also has to make sense
+    const char* displayName;
+    app_location_t menuLocation;
+    Color iconColor;
+    const Bitmap* icon;
+    ViewFactoryBase* viewFactory;  // Never destroyed, and I believe it's ok ;) Having a unique_ptr here breaks the initializer list of appList
+};
+
 struct AppInfoConsole {
    const char* appCallName;
    const char* appFriendlyName;
@@ -75,6 +94,7 @@ class NavigationView : public View {
    NavigationView& operator=(NavigationView&&) = delete;

    bool is_top() const;
+    bool is_valid() const;

    template <class T, class... Args>
    T* push(Args&&... args) {
@@ -106,8 +126,14 @@ class NavigationView : public View {
     * Returns true if the handler was bound successfully. */
    bool set_on_pop(std::function<void()> on_pop);

-    static std::vector<AppInfoConsole> fixedAppListFC;  // fixed app list for console. vector, so can be incomplete and still iterateable
-    bool StartAppByName(const char* name);              // Starts a View  (app) by name stored in fixedAppListFC. This is to start apps from console
+    // App list is used to preserve order, so the menu items in the menu grid can stay in place
+    // App map is used to look up apps by id used by serial app start
+    using AppMap = std::map<const char*, const AppInfo&, CstrCmp>;
+    using AppList = std::vector<AppInfo>;
+    static const AppMap appMap;
+    static const AppList appList;
+
+    bool StartAppByName(const char* name);  // Starts a View  (app) by name stored in appListFC. This is to start apps from console
   private:
    struct ViewState {
        std::unique_ptr<View> view;
@@ -261,6 +287,7 @@ class InformationView : public View {
   public:
    InformationView(NavigationView& nav);
    void refresh();
+    bool firmware_checksum_error();

   private:
    // static constexpr auto version_string = "v1.4.4"; // This is commented out as we are now setting the version via ENV (VERSION_STRING=v1.0.0)
@@ -181,7 +181,7 @@ void RecordView::start() {

    std::filesystem::path base_path;
    if (filename_date_frequency) {
-        rtcGetTime(&RTCD1, &datetime);
+        rtc_time::now(datetime);

        // ISO 8601
        std::string date_time =
@@ -118,7 +118,7 @@ uint8_t usb_descriptor_configuration_full_speed[] = {
    USB_INT_IN_EP_ADDR,            // bEndpointAddress
    0x03,                          // bmAttributes: BULK
    USB_WORD(16),                  // wMaxPacketSize
-    0xFF,                          // bInterval: no NAK
+    0x20,                          // bInterval: no NAK

    9,                              // bLength
    USB_DESCRIPTOR_TYPE_INTERFACE,  // bDescriptorType
@@ -203,7 +203,7 @@ uint8_t usb_descriptor_configuration_high_speed[] = {
    USB_INT_IN_EP_ADDR,            // bEndpointAddress
    0x03,                          // bmAttributes: BULK
    USB_WORD(16),                  // wMaxPacketSize
-    0xFF,                          // bInterval: no NAK
+    0x20,                          // bInterval: no NAK

    9,                              // bLength
    USB_DESCRIPTOR_TYPE_INTERFACE,  // bDescriptorType
@@ -41,12 +41,15 @@
 #include "chprintf.h"
 #include "chqueues.h"
 #include "ui_external_items_menu_loader.hpp"
+#include "ui_flash_utility.hpp"
 #include "untar.hpp"
 #include "ui_widget.hpp"

 #include "ui_navigation.hpp"
 #include "usb_serial_shell_filesystem.hpp"

+#include "portapack_persistent_memory.hpp"
+
 #include <string>
 #include <cstring>
 #include <libopencm3/lpc43xx/wwdt.h>
@@ -149,39 +152,15 @@ static void cmd_flash(BaseSequentialStream* chp, int argc, char* argv[]) {
    if (!top_widget) return;
    auto nav = static_cast<ui::SystemView*>(top_widget)->get_navigation_view();
    if (!nav) return;
-    nav->display_modal("Flashing", "Flashing from serial.\rPlease wait!\nDevice will restart.");
-    // check file extensions
-    if (strEndsWith(path.native(), u".ppfw.tar")) {
-        // extract tar
-        chprintf(chp, "Extracting TAR file.\r\n");
-        auto res = UnTar::untar(
-            path.native(), [chp](const std::string fileName) {
-                chprintf(chp, fileName.c_str());
-                chprintf(chp, "\r\n");
-            });
-        if (res.empty()) {
-            chprintf(chp, "error bad TAR file.\r\n");
-            nav->pop();
-            return;
-        }
-        path = res;  // it will contain the last bin file in tar
-    } else if (strEndsWith(path.native(), u".bin")) {
-        // nothing to do for this case yet.
-    } else {
-        chprintf(chp, "error only .bin or .ppfw.tar files canbe flashed.\r\n");
-        nav->pop();
-        return;
-    }
+    nav->home(false);

-    chprintf(chp, "Flashing: ");
-    chprintf(chp, path.string().c_str());
-    chprintf(chp, "\r\n");
-    chThdSleepMilliseconds(50);
-    std::memcpy(&shared_memory.bb_data.data[0], path.native().c_str(), (path.native().length() + 1) * 2);
-    m4_request_shutdown();
-    chThdSleepMilliseconds(50);
-    m4_init(portapack::spi_flash::image_tag_flash_utility, portapack::memory::map::m4_code, false);
-    m0_halt();
+    // call nav with flash
+    auto open_view = nav->push<ui::FlashUtilityView>();
+    chprintf(chp, "Flashing started\r\n");
+    chThdSleepMilliseconds(150);  // to give display some time to paint the screen
+    if (!open_view->flash_firmware(path.native())) {
+        chprintf(chp, "error\r\n");
+    }
 }

 static void cmd_screenshot(BaseSequentialStream* chp, int argc, char* argv[]) {
@@ -402,7 +381,7 @@ static void cmd_rtcget(BaseSequentialStream* chp, int argc, char* argv[]) {
    (void)argv;

    rtc::RTC datetime;
-    rtcGetTime(&RTCD1, &datetime);
+    rtc_time::now(datetime);

    chprintf(chp, "Current time: %04d-%02d-%02d %02d:%02d:%02d\r\n", datetime.year(), datetime.month(), datetime.day(), datetime.hour(), datetime.minute(), datetime.second());
 }
@@ -418,11 +397,12 @@ static void cmd_rtcset(BaseSequentialStream* chp, int argc, char* argv[]) {
        return;
    }

+    // TODO: additional commands/parameters for DST?
    rtc::RTC new_datetime{
        (uint16_t)strtol(argv[0], NULL, 10), (uint8_t)strtol(argv[1], NULL, 10),
        (uint8_t)strtol(argv[2], NULL, 10), (uint32_t)strtol(argv[3], NULL, 10),
        (uint32_t)strtol(argv[4], NULL, 10), (uint32_t)strtol(argv[5], NULL, 10)};
-    rtcSetTime(&RTCD1, &new_datetime);
+    rtc_time::set(new_datetime);

    chprintf(chp, "ok\r\n");
 }
@@ -708,6 +688,30 @@ static void printAppInfo(BaseSequentialStream* chp, ui::AppInfoConsole& element)
    }
 }

+static void printAppInfo(BaseSequentialStream* chp, const ui::AppInfo& element) {
+    if (strlen(element.id) == 0) return;
+    chprintf(chp, element.id);
+    chprintf(chp, " ");
+    chprintf(chp, element.displayName);
+    chprintf(chp, " ");
+    switch (element.menuLocation) {
+        case RX:
+            chprintf(chp, "[RX]\r\n");
+            break;
+        case TX:
+            chprintf(chp, "[TX]\r\n");
+            break;
+        case UTILITIES:
+            chprintf(chp, "[UTIL]\r\n");
+            break;
+        case DEBUG:
+            chprintf(chp, "[DEBUG]\r\n");
+            break;
+        default:
+            break;
+    }
+}
+
 // returns the installed apps, those can be called by appstart APPNAME
 static void cmd_applist(BaseSequentialStream* chp, int argc, char* argv[]) {
    (void)argc;
@@ -718,8 +722,9 @@ static void cmd_applist(BaseSequentialStream* chp, int argc, char* argv[]) {
    if (!top_widget) return;
    auto nav = static_cast<ui::SystemView*>(top_widget)->get_navigation_view();
    if (!nav) return;
-    for (auto element : ui::NavigationView::fixedAppListFC) {
-        printAppInfo(chp, element);
+    // TODO(u-foka): Somehow order static and dynamic app lists together
+    for (auto& element : ui::NavigationView::appMap) {  // Use the map as its ordered by id
+        printAppInfo(chp, element.second);
    }
    ui::ExternalItemsMenuLoader::load_all_external_items_callback([chp](ui::AppInfoConsole& info) {
        printAppInfo(chp, info);
@@ -962,6 +967,58 @@ static void cmd_radioinfo(BaseSequentialStream* chp, int argc, char* argv[]) {
    return;
 }

+static void cmd_pmemreset(BaseSequentialStream* chp, int argc, char* argv[]) {
+    const char* usage = "usage: pmemreset yes\r\nThis will reset pmem to defaults!\r\n";
+    (void)argv;
+    if (argc != 1 || strcmp(argv[0], "yes") != 0) {
+        chprintf(chp, usage);
+        return;
+    }
+    auto evtd = getEventDispatcherInstance();
+    if (!evtd) return;
+    auto top_widget = evtd->getTopWidget();
+    if (!top_widget) return;
+    auto nav = static_cast<ui::SystemView*>(top_widget)->get_navigation_view();
+    if (!nav) return;
+    nav->home(true);
+
+    portapack::persistent_memory::cache::defaults();
+    // system refresh
+    StatusRefreshMessage message{};
+    EventDispatcher::send_message(message);
+    chprintf(chp, "ok\r\n");
+}
+
+static void cmd_settingsreset(BaseSequentialStream* chp, int argc, char* argv[]) {
+    const char* usage = "usage: settingsreset yes\r\nThis will reset all app settings to defaults!\r\n";
+    (void)argv;
+    if (argc != 1 || strcmp(argv[0], "yes") != 0) {
+        chprintf(chp, usage);
+        return;
+    }
+    auto evtd = getEventDispatcherInstance();
+    if (!evtd) return;
+    auto top_widget = evtd->getTopWidget();
+    if (!top_widget) return;
+    auto nav = static_cast<ui::SystemView*>(top_widget)->get_navigation_view();
+    if (!nav) return;
+    nav->home(true);  // to exit all running apps
+
+    for (const auto& entry : std::filesystem::directory_iterator(SETTINGS_DIR, u"*.ini")) {
+        if (std::filesystem::is_regular_file(entry.status())) {
+            std::filesystem::path pth = SETTINGS_DIR;
+            pth += u"/" + entry.path();
+            chprintf(chp, pth.string().c_str());
+            chprintf(chp, "\r\n");
+            f_unlink(pth.tchar());
+        }
+    }
+    // system refresh
+    StatusRefreshMessage message{};
+    EventDispatcher::send_message(message);
+    chprintf(chp, "ok\r\n");
+}
+
 static const ShellCommand commands[] = {
    {"reboot", cmd_reboot},
    {"dfu", cmd_dfu},
@@ -989,6 +1046,8 @@ static const ShellCommand commands[] = {
    {"gotorientation", cmd_gotorientation},
    {"sysinfo", cmd_sysinfo},
    {"radioinfo", cmd_radioinfo},
+    {"pmemreset", cmd_pmemreset},
+    {"settingsreset", cmd_settingsreset},
    {NULL, NULL}};

 static const ShellConfig shell_cfg1 = {
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2024 Tamas Eisenberger <e.tamas@iwstudio.hu>
+ *
+ * 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 __VIEW_FACTORY_HPP__
+#define __VIEW_FACTORY_HPP__
+
+#include "view_factory_base.hpp"
+
+namespace ui {
+
+template <typename T>
+class ViewFactory : public ViewFactoryBase {
+   public:
+    virtual std::unique_ptr<View> produce(NavigationView& nav) const override {
+        return std::unique_ptr<View>(new T(nav));
+    }
+};
+
+}  // namespace ui
+
+#endif  //__VIEW_FACTORY_HPP__
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 Tamas Eisenberger <e.tamas@iwstudio.hu>
+ *
+ * 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 "view_factory_base.hpp"
+
+namespace ui {
+
+ViewFactoryBase::~ViewFactoryBase() {}
+
+}  // namespace ui
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2024 Tamas Eisenberger <e.tamas@iwstudio.hu>
+ *
+ * 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 __VIEW_FACTORY_BASE_HPP__
+#define __VIEW_FACTORY_BASE_HPP__
+
+#include <memory>
+#include "ui_widget.hpp"
+
+namespace ui {
+
+class NavigationView;
+
+class ViewFactoryBase {
+   public:
+    virtual ~ViewFactoryBase();
+    virtual std::unique_ptr<View> produce(NavigationView& nav) const = 0;
+};
+
+}  // namespace ui
+
+#endif  //__VIEW_FACTORY_BASE_HPP__
@@ -215,9 +215,12 @@ void disable() {
    gpdma_channel_i2s0_rx.disable();
 }

-void shrink_tx_buffer() {
-    single_tx_buffer = true;
-    lli_tx_loop[0].lli = lli_pointer(&lli_tx_loop[0]);
+void shrink_tx_buffer(bool shrink) {
+    single_tx_buffer = shrink;
+    if (single_tx_buffer)
+        lli_tx_loop[0].lli = lli_pointer(&lli_tx_loop[0]);
+    else
+        lli_tx_loop[0].lli = lli_pointer(&lli_tx_loop[1]);
 }

 buffer_t tx_empty_buffer() {
@@ -47,7 +47,7 @@ void init();
 void configure();
 void enable();
 void disable();
-void shrink_tx_buffer();
+void shrink_tx_buffer(bool shrink);

 audio::buffer_t tx_empty_buffer();
 audio::buffer_t rx_empty_buffer();
@@ -32,34 +32,34 @@
 #include <cstddef>
 #include <array>

-void AudioOutput::configure(
-    const bool do_proc) {
+void AudioOutput::configure(const bool do_proc) {
    do_processing = do_proc;
 }

-void AudioOutput::configure(
-    const iir_biquad_config_t& hpf_config,
-    const iir_biquad_config_t& deemph_config,
-    const float squelch_threshold) {
+void AudioOutput::configure(const iir_biquad_config_t& hpf_config, const iir_biquad_config_t& deemph_config, const float squelch_threshold) {
    hpf.configure(hpf_config);
    deemph.configure(deemph_config);
    squelch.set_threshold(squelch_threshold);
 }

-void AudioOutput::write(
-    const buffer_s16_t& audio) {
+void AudioOutput::write_unprocessed(const buffer_s16_t& audio) {
+    block_buffer_s16.feed(
+        audio,
+        [this](const buffer_s16_t& buffer) {
+            audio_present = true;
+            fill_audio_buffer(buffer, audio_present);
+        });
+}
+
+void AudioOutput::write(const buffer_s16_t& audio) {
    std::array<float, 32> audio_f;
    for (size_t i = 0; i < audio.count; i++) {
        audio_f[i] = audio.p[i] * ki;
    }
-    write(buffer_f32_t{
-        audio_f.data(),
-        audio.count,
-        audio.sampling_rate});
+    write(buffer_f32_t{audio_f.data(), audio.count, audio.sampling_rate});
 }

-void AudioOutput::write(
-    const buffer_f32_t& audio) {
+void AudioOutput::write(const buffer_f32_t& audio) {
    block_buffer.feed(
        audio,
        [this](const buffer_f32_t& buffer) {
@@ -67,8 +67,7 @@ void AudioOutput::write(
        });
 }

-void AudioOutput::on_block(
-    const buffer_f32_t& audio) {
+void AudioOutput::on_block(const buffer_f32_t& audio) {
    if (do_processing) {
        const auto audio_present_now = squelch.execute(audio);

@@ -93,6 +92,18 @@ bool AudioOutput::is_squelched() {
    return !audio_present;
 }

+void AudioOutput::fill_audio_buffer(const buffer_s16_t& audio, const bool send_to_fifo) {
+    auto audio_buffer = audio::dma::tx_empty_buffer();
+    for (size_t i = 0; i < audio_buffer.count; i++) {
+        audio_buffer.p[i].left = audio_buffer.p[i].right = audio.p[i];
+    }
+    if (stream && send_to_fifo) {
+        stream->write(audio.p, audio_buffer.count * sizeof(int16_t));
+    }
+
+    feed_audio_stats(audio);
+}
+
 void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio, const bool send_to_fifo) {
    std::array<int16_t, 32> audio_int;

@@ -110,6 +121,15 @@ void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio, const bool send_t
    feed_audio_stats(audio);
 }

+void AudioOutput::feed_audio_stats(const buffer_s16_t& audio) {
+    audio_stats.feed(
+        audio,
+        [](const AudioStatistics& statistics) {
+            const AudioStatisticsMessage audio_stats_message{statistics};
+            shared_memory.application_queue.push(audio_stats_message);
+        });
+}
+
 void AudioOutput::feed_audio_stats(const buffer_f32_t& audio) {
    audio_stats.feed(
        audio,
@@ -44,6 +44,7 @@ class AudioOutput {
        const iir_biquad_config_t& deemph_config = iir_config_passthrough,
        const float squelch_threshold = 0.0f);

+    void write_unprocessed(const buffer_s16_t& audio);
    void write(const buffer_s16_t& audio);
    void write(const buffer_f32_t& audio);

@@ -57,6 +58,7 @@ class AudioOutput {
    static constexpr float k = 32768.0f;
    static constexpr float ki = 1.0f / k;

+    BlockDecimator<int16_t, 32> block_buffer_s16{1};
    BlockDecimator<float, 32> block_buffer{1};

    IIRBiquadFilter hpf{};
@@ -73,7 +75,11 @@ class AudioOutput {
    bool do_processing = true;

    void on_block(const buffer_f32_t& audio);
+
+    void fill_audio_buffer(const buffer_s16_t& audio, const bool send_to_fifo);
    void fill_audio_buffer(const buffer_f32_t& audio, const bool send_to_fifo);
+
+    void feed_audio_stats(const buffer_s16_t& audio);
    void feed_audio_stats(const buffer_f32_t& audio);
 };

@@ -23,6 +23,19 @@

 #include "utility.hpp"

+void AudioStatsCollector::consume_audio_buffer(const buffer_s16_t& src) {
+    auto src_p = src.p;
+    const auto src_end = &src.p[src.count];
+    while (src_p < src_end) {
+        const auto sample = *(src_p++);
+        const auto sample_squared = sample * sample;
+        squared_sum += sample_squared;
+        if (sample_squared > max_squared) {
+            max_squared = sample_squared;
+        }
+    }
+}
+
 void AudioStatsCollector::consume_audio_buffer(const buffer_f32_t& src) {
    auto src_p = src.p;
    const auto src_end = &src.p[src.count];
@@ -56,6 +69,12 @@ bool AudioStatsCollector::update_stats(const size_t sample_count, const size_t s
    }
 }

+bool AudioStatsCollector::feed(const buffer_s16_t& src) {
+    consume_audio_buffer(src);
+
+    return update_stats(src.count, src.sampling_rate);
+}
+
 bool AudioStatsCollector::feed(const buffer_f32_t& src) {
    consume_audio_buffer(src);

@@ -30,6 +30,13 @@

 class AudioStatsCollector {
   public:
+    template <typename Callback>
+    void feed(const buffer_s16_t& src, Callback callback) {
+        if (feed(src)) {
+            callback(statistics);
+        }
+    }
+
    template <typename Callback>
    void feed(const buffer_f32_t& src, Callback callback) {
        if (feed(src)) {
@@ -52,10 +59,12 @@ class AudioStatsCollector {

    AudioStatistics statistics{};

+    void consume_audio_buffer(const buffer_s16_t& src);
    void consume_audio_buffer(const buffer_f32_t& src);

    bool update_stats(const size_t sample_count, const size_t sampling_rate);

+    bool feed(const buffer_s16_t& src);
    bool feed(const buffer_f32_t& src);
    bool mute(const size_t sample_count, const size_t sampling_rate);
 };
@@ -30,24 +30,36 @@
 void AudioTXProcessor::execute(const buffer_c8_t& buffer) {
    if (!configured) return;

+    int32_t audio_sample_m;
+
    // Zero-order hold (poop)
    for (size_t i = 0; i < buffer.count; i++) {
        resample_acc += resample_inc;
        if (resample_acc >= 0x10000) {
            resample_acc -= 0x10000;
            if (stream) {
-                stream->read(&audio_sample, 1);
-                bytes_read++;
+                audio_sample = 0;
+                stream->read(&audio_sample, bytes_per_sample);  // assumes little endian when reading 1 byte
+                samples_read++;
            }
        }

-        // Output to speaker too
-        uint32_t imod32 = i & (AUDIO_OUTPUT_BUFFER_SIZE - 1);
-        audio_data[imod32] = ((int16_t)audio_sample - 0x80) * (1.0f / 128.0f);
-        if (imod32 == (AUDIO_OUTPUT_BUFFER_SIZE - 1))
-            audio_output.write(audio_buffer);
+        if (bytes_per_sample == 1) {
+            sample = audio_sample - 0x80;
+            audio_sample_m = sample * 256;
+        } else {
+            audio_sample_m = audio_sample;
+        }

-        sample = tone_gen.process(audio_sample - 0x80);
+        // Output to speaker too
+        if (!tone_key_enabled) {
+            uint32_t imod32 = i & (AUDIO_OUTPUT_BUFFER_SIZE - 1);
+            audio_data[imod32] = audio_sample_m;
+            if (imod32 == (AUDIO_OUTPUT_BUFFER_SIZE - 1))
+                audio_output.write_unprocessed(audio_buffer);
+        }
+
+        sample = tone_gen.process(sample);

        // FM
        delta = sample * fm_delta;
@@ -65,7 +77,7 @@ void AudioTXProcessor::execute(const buffer_c8_t& buffer) {
    if (progress_samples >= progress_interval_samples) {
        progress_samples -= progress_interval_samples;

-        txprogress_message.progress = bytes_read;  // Inform UI about progress
+        txprogress_message.progress = samples_read;  // Inform UI about progress
        txprogress_message.done = false;
        shared_memory.application_queue.push(txprogress_message);
    }
@@ -79,7 +91,7 @@ void AudioTXProcessor::on_message(const Message* const message) {

        case Message::ID::ReplayConfig:
            configured = false;
-            bytes_read = 0;
+            samples_read = 0;
            replay_config(*reinterpret_cast<const ReplayConfigMessage*>(message));
            break;

@@ -101,8 +113,11 @@ void AudioTXProcessor::audio_config(const AudioTXConfigMessage& message) {
    tone_gen.configure(message.tone_key_delta, message.tone_key_mix_weight);
    progress_interval_samples = message.divider;
    resample_acc = 0;
+    bytes_per_sample = message.bits_per_sample / 8;
    audio_output.configure(false);
-    audio::dma::shrink_tx_buffer();
+
+    tone_key_enabled = (message.tone_key_delta != 0);
+    audio::dma::shrink_tx_buffer(!tone_key_enabled);
 }

 void AudioTXProcessor::replay_config(const ReplayConfigMessage& message) {
@@ -48,18 +48,21 @@ class AudioTXProcessor : public BasebandProcessor {
    uint32_t resample_inc{}, resample_acc{};
    uint32_t fm_delta{0};
    uint32_t phase{0}, sphase{0};
-    uint8_t audio_sample{};
+    uint32_t audio_sample{};
    int32_t sample{0}, delta{};
    int8_t re{0}, im{0};
+    int8_t bytes_per_sample{1};
+    int16_t audio_sample_s16{};

-    float audio_data[AUDIO_OUTPUT_BUFFER_SIZE];
-    buffer_f32_t audio_buffer{audio_data, AUDIO_OUTPUT_BUFFER_SIZE, 48000};
+    int16_t audio_data[AUDIO_OUTPUT_BUFFER_SIZE];
+    buffer_s16_t audio_buffer{audio_data, AUDIO_OUTPUT_BUFFER_SIZE, 48000};
    AudioOutput audio_output{};

    size_t progress_interval_samples = 0, progress_samples = 0;

    bool configured{false};
-    uint32_t bytes_read{0};
+    uint32_t samples_read{0};
+    bool tone_key_enabled{false};

    void sample_rate_config(const SampleRateConfigMessage& message);
    void audio_config(const AudioTXConfigMessage& message);
@@ -26,7 +26,8 @@
 #include "ui_navigation.hpp"
 #include "spi_image.hpp"

-#define CURRENT_HEADER_VERSION 0x00000001
+#define CURRENT_HEADER_VERSION 0x00000002
+#define MIN_HEADER_VERSION_FOR_CHECKSUM 0x00000002

 typedef void (*externalAppEntry_t)(ui::NavigationView& nav);

@@ -34,7 +35,8 @@ enum app_location_t : uint32_t {
    UTILITIES = 0,
    RX,
    TX,
-    DEBUG
+    DEBUG,
+    HOME
 };

 struct application_information_t {
@@ -931,6 +931,7 @@ class AudioTXConfigMessage : public Message {
        const float deviation_hz,
        const float audio_gain,
        const uint8_t audio_shift_bits_s16,
+        const uint8_t bits_per_sample,
        const uint32_t tone_key_delta,
        const float tone_key_mix_weight,
        const bool am_enabled,
@@ -942,6 +943,7 @@ class AudioTXConfigMessage : public Message {
          deviation_hz(deviation_hz),
          audio_gain(audio_gain),
          audio_shift_bits_s16(audio_shift_bits_s16),
+          bits_per_sample(bits_per_sample),
          tone_key_delta(tone_key_delta),
          tone_key_mix_weight(tone_key_mix_weight),
          am_enabled(am_enabled),
@@ -954,6 +956,7 @@ class AudioTXConfigMessage : public Message {
    const float deviation_hz;
    const float audio_gain;
    const uint8_t audio_shift_bits_s16;
+    const uint8_t bits_per_sample;
    const uint32_t tone_key_delta;
    const float tone_key_mix_weight;
    const bool am_enabled;
@@ -32,7 +32,9 @@
 #include "string_format.hpp"
 #include "ui_styles.hpp"
 #include "ui_painter.hpp"
+#include "ui_flash_utility.hpp"
 #include "utility.hpp"
+#include "rtc_time.hpp"

 #include <algorithm>
 #include <string>
@@ -235,6 +237,9 @@ struct data_t {
    // recovery mode magic value storage
    uint32_t config_mode_storage;

+    // Daylight savings time
+    dst_config_t dst_config;
+
    constexpr data_t()
        : structure_version(data_structure_version_enum::VERSION_CURRENT),
          target_frequency(target_frequency_reset_value),
@@ -287,7 +292,8 @@ struct data_t {
          headphone_volume_cb(-600),
          misc_config(),
          ui_config2(),
-          config_mode_storage(CONFIG_MODE_NORMAL_VALUE) {
+          config_mode_storage(CONFIG_MODE_NORMAL_VALUE),
+          dst_config() {
    }
 };

@@ -972,6 +978,22 @@ bool config_disable_config_mode_direct() {
    return ((misc_config_u32 & MC_CONFIG_DISABLE_CONFIG_MODE) != 0);
 }

+// Daylight savings time
+bool dst_enabled() {
+    return data->dst_config.b.dst_enabled;
+}
+void set_dst_enabled(bool v) {
+    data->dst_config.b.dst_enabled = v;
+    rtc_time::dst_init();
+}
+dst_config_t config_dst() {
+    return data->dst_config;
+}
+void set_config_dst(dst_config_t v) {
+    data->dst_config = v;
+    rtc_time::dst_init();
+}
+
 // PMem to sdcard settings

 bool should_use_sdcard_for_pmem() {
@@ -1030,6 +1052,9 @@ bool debug_dump() {
    pmem_dump_file.write_line("Ext APPS version req'd: 0x" + to_string_hex(VERSION_MD5));
    pmem_dump_file.write_line("GCC version: " + to_string_dec_int(__GNUC__) + "." + to_string_dec_int(__GNUC_MINOR__) + "." + to_string_dec_int(__GNUC_PATCHLEVEL__));

+    // firmware checksum
+    pmem_dump_file.write_line("Firmware calculated checksum: 0x" + to_string_hex(simple_checksum(FLASH_STARTING_ADDRESS, FLASH_ROM_SIZE), 8));
+
    // write persistent memory
    pmem_dump_file.write_line("\n[Persistent Memory]");

@@ -1073,6 +1098,7 @@ bool debug_dump() {
    // pmem_dump_file.write_line("UNUSED_8: " + to_string_dec_uint(data->UNUSED_8));
    pmem_dump_file.write_line("headphone_volume_cb: " + to_string_dec_int(data->headphone_volume_cb));
    pmem_dump_file.write_line("config_mode_storage: 0x" + to_string_hex(data->config_mode_storage, 8));
+    pmem_dump_file.write_line("dst_config: 0x" + to_string_hex((uint32_t)data->dst_config.v, 8));

    // ui_config bits
    const auto backlight_timer = portapack::persistent_memory::config_backlight_timer();
@@ -32,6 +32,7 @@
 #include "modems.hpp"
 #include "serializer.hpp"
 #include "volume.hpp"
+#include "config_mode.hpp"

 // persistent memory from/to sdcard flag file
 #define PMEM_FILEFLAG u"/SETTINGS/PMEM_FILEFLAG"
@@ -116,6 +117,21 @@ enum encoder_dial_sensitivity {
    NUM_DIAL_SENSITIVITY
 };

+typedef union {
+    uint32_t v;
+    struct {
+        uint8_t start_which : 4;
+        uint8_t start_weekday : 4;
+        uint8_t start_month : 4;
+        uint8_t end_which : 4;
+        uint8_t end_weekday : 4;
+        uint8_t end_month : 4;
+        uint8_t UNUSED : 7;
+        uint8_t dst_enabled : 1;
+    } b;
+} dst_config_t;
+static_assert(sizeof(dst_config_t) == sizeof(uint32_t));
+
 namespace cache {

 /* Set values in cache to sensible defaults. */
@@ -227,8 +243,6 @@ void set_disable_touchscreen(bool v);
 uint8_t config_encoder_dial_sensitivity();
 void set_encoder_dial_sensitivity(uint8_t v);

-#define CONFIG_MODE_GUARD_VALUE 0x000007d1
-#define CONFIG_MODE_NORMAL_VALUE 0x000007cf
 uint32_t config_mode_storage_direct();
 void set_config_mode_storage_direct(uint32_t v);
 bool config_disable_config_mode_direct();
@@ -241,9 +255,14 @@ void set_pocsag_ignore_address(uint32_t address);

 bool clkout_enabled();
 void set_clkout_enabled(bool v);
-uint16_t clkout_freq();
 void set_clkout_freq(uint16_t freq);

+bool dst_enabled();
+void set_dst_enabled(bool v);
+uint16_t clkout_freq();
+dst_config_t config_dst();
+void set_config_dst(dst_config_t v);
+
 /* Recon app */
 bool recon_autosave_freqs();
 bool recon_autostart_recon();
@@ -32,8 +32,10 @@
 #include "irq_controls.hpp"
 #include "string_format.hpp"
 #include "usb_serial_device_to_host.h"
+#include "rtc_time.hpp"

 using namespace portapack;
+using namespace rtc_time;

 namespace ui {

@@ -433,7 +435,7 @@ void Labels::getWidgetName(std::string& result) {
 /* LiveDateTime **********************************************************/

 void LiveDateTime::on_tick_second() {
-    rtcGetTime(&RTCD1, &datetime);
+    rtc_time::now(datetime);
    text = "";
    if (!hide_clock) {
        if (date_enabled) {
@@ -6,6 +6,8 @@
 #include <string.h>
 #include "string_format.hpp"
 #include "file.hpp"
+#include "utility.hpp"
+#include "ui_external_items_menu_loader.hpp"

 class UnTar {
   public:
@@ -86,6 +88,10 @@ class UnTar {
        std::string binfile = "";
        std::string fn = "";
        int filesize;
+        uint32_t app_checksum;
+        bool app_file;
+        bool first_read;
+        bool corrupt_file{false};
        for (;;) {
            auto readres = a->read(buff, 512);
            if (!readres.is_ok()) return "";
@@ -132,20 +138,49 @@ class UnTar {
                delete_file(fn);
                auto fres = f.open(fn, false, true);
                if (!fres.value().ok()) return "";
+                app_file = (fn.substr(fn.size() - 5) == ".ppma");
+                first_read = true;
+                app_checksum = 0;
+                corrupt_file = false;
            }
            while (filesize > 0) {
                readres = a->read(buff, 512);
-                if (!readres.is_ok()) return "";
+                if (!readres.is_ok()) {
+                    corrupt_file = true;
+                    break;
+                }
                bytes_read = readres.value();
                if (bytes_read < 512) {
-                    return "";
+                    corrupt_file = true;
+                    break;
                }
                if (filesize < 512)
                    bytes_read = filesize;
+                if (app_file && first_read) {
+                    // Check app file header for min version for checksum support
+                    struct application_information_t* app_info = (struct application_information_t*)buff;
+                    if (app_info->header_version < MIN_HEADER_VERSION_FOR_CHECKSUM)
+                        app_file = false;
+                    first_read = false;
+                }
+                if (app_file) {
+                    app_checksum += simple_checksum((uint32_t)buff, bytes_read);
+                }
                auto fwres = f.write(buff, bytes_read);
-                if (!fwres.is_ok()) return "";
+                if (!fwres.is_ok()) {
+                    corrupt_file = true;
+                    break;
+                }
                filesize -= bytes_read;
                f.sync();
+                if ((filesize == 0) && app_file && (app_checksum != EXT_APP_EXPECTED_CHECKSUM)) {
+                    corrupt_file = true;
+                    break;
+                }
+            }
+            if (corrupt_file) {
+                delete_file(fn);
+                return "";
            }
        }
        return binfile;
@@ -235,3 +235,10 @@ std::string join(char c, std::initializer_list<std::string_view> strings) {

    return result;
 }
+
+uint32_t simple_checksum(uint32_t buffer_address, uint32_t length) {
+    uint32_t checksum = 0;
+    for (uint32_t i = 0; i < length; i += 4)
+        checksum += *(uint32_t*)(buffer_address + i);
+    return checksum;
+}
@@ -111,7 +111,7 @@ inline uint32_t ms_duration(
    if (sample_rate == 0 || bytes_per_sample == 0)
        return 0;

-    return buffer_size / bytes_per_sample / sample_rate * 1000;
+    return buffer_size * 1000 / (bytes_per_sample * sample_rate);
 }

 int fast_int_magnitude(int y, int x);
@@ -217,4 +217,6 @@ struct range_t {

 std::string join(char c, std::initializer_list<std::string_view> strings);

+uint32_t simple_checksum(uint32_t buffer_address, uint32_t length);
+
 #endif /*__UTILITY_H__*/
@@ -0,0 +1,36 @@
+from PIL import Image
+import numpy as np
+
+bitmap_data = [
+    0x30, 0x00,
+    0x30, 0x00,
+    0x30, 0x00,
+    0x30, 0x00,
+    0x30, 0x00,
+    0x30, 0x00,
+    0xFC, 0x00,
+    0xCE, 0x01,
+    0x86, 0x01,
+    0xFE, 0x01,
+    0x86, 0x31,
+    0x86, 0x49,
+    0xCE, 0x87,
+    0xFC, 0x84,
+    0xFC, 0x4B,
+    0x78, 0x30,
+]
+
+bitmap_size = (16, 16)
+
+image_data = np.zeros((bitmap_size[1], bitmap_size[0]), dtype=np.uint8)
+
+for y in range(bitmap_size[1]):
+    for x in range(bitmap_size[0]):
+        byte_index = (y * bitmap_size[0] + x) // 8
+        bit_index = x % 8
+        # bit_index = 7 - (x % 8)
+        pixel_value = (bitmap_data[byte_index] >> bit_index) & 1
+        image_data[y, x] = pixel_value * 255
+
+image = Image.fromarray(image_data, 'L')
+image.save('decoded.png')
@@ -104,6 +104,14 @@ for external_image_prefix in sys.argv[4:]:
 		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')

+		checksum = 0
+		for i in range(0, len(external_application_image), 4):
+			checksum += external_application_image[i] + (external_application_image[i + 1] << 8) + (external_application_image[i + 2] << 16) + (external_application_image[i + 3] << 24)
+
+		final_checksum = 0
+		checksum = (final_checksum - checksum) & 0xFFFFFFFF
+		external_application_image += checksum.to_bytes(4, 'little')
+
 		write_image(external_application_image, "{}/{}.ppma".format(binary_dir, external_image_prefix))
 		continue

@@ -127,5 +135,13 @@ for external_image_prefix in sys.argv[4:]:
 		print("application {} can not exceed 32kb: {} bytes used".format(external_image_prefix, len(external_application_image)))
 		sys.exit(-1)

+	checksum = 0
+	for i in range(0, len(external_application_image), 4):
+		checksum += external_application_image[i] + (external_application_image[i + 1] << 8) + (external_application_image[i + 2] << 16) + (external_application_image[i + 3] << 24)
+
+	final_checksum = 0
+	checksum = (final_checksum - checksum) & 0xFFFFFFFF
+	external_application_image += checksum.to_bytes(4, 'little')
+
 	# write .ppma (portapack mayhem application)
 	write_image(external_application_image, "{}/{}.ppma".format(binary_dir, external_image_prefix))
@@ -74,7 +74,24 @@ for image in images:
 	padded_data = image['data'] + (spi_image_default_byte * pad_size)
 	spi_image += padded_data

-if len(spi_image) > spi_size:
-	raise RuntimeError('SPI flash image size of %d exceeds device size of %d bytes' % (len(spi_image), spi_size))
+if len(spi_image) > spi_size - 4:
+	raise RuntimeError('SPI flash image size of %d exceeds device size of %d bytes' % (len(spi_image) + 4, spi_size))
+
+pad_size = spi_size - 4 - len(spi_image)
+for i in range(pad_size):
+	spi_image += spi_image_default_byte
+
+# quick "add up the words" checksum:
+checksum = 0
+for i in range(0, len(spi_image), 4):
+	checksum += (spi_image[i] + (spi_image[i + 1] << 8) + (spi_image[i + 2] << 16) + (spi_image[i + 3] << 24))
+
+final_checksum = 0
+checksum = (final_checksum - checksum) & 0xFFFFFFFF
+
+spi_image += checksum.to_bytes(4, 'little')

 write_image(spi_image, output_path)
+
+percent_remaining = round(1000 * pad_size / spi_size) / 10;
+print ("Space remaining in flash ROM:", pad_size, "bytes (", percent_remaining, "%)")
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+#
+# Copyright (C) 2024 Mark Thompson
+#
+# This file is part of PortaPack.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+import sys
+import struct
+
+usage_message = """
+PortaPack ROM image checksum checker
+
+Usage: <command> <input-file>
+"""
+
+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()
+
+if len(sys.argv) != 2:
+	print(usage_message)
+	sys.exit(-1)
+
+image = read_image(sys.argv[1])
+image = bytearray(image)
+
+# simple "add up the words" checksum:
+checksum = 0
+for i in range(0, len(image), 4):
+	checksum += (image[i] + (image[i + 1] << 8) + (image[i + 2] << 16) + (image[i + 3] << 24))
+
+checksum &= 0xFFFFFFFF
+print ("Simple checksum =", checksum)
Author	SHA1	Message	Date
Mark Thompson	a2a5fb166e	Improved Debounce for Encoders (#1837 ) * Fix variable type declaration * Fix typo * Two-bit encoder debouncing * Slight optimization * Comment change	2024-01-31 14:13:21 -06:00
Mark Thompson	f59f5dfaa3	Fixed ms_duration function to show actual ms (#1836 )	2024-01-31 21:08:17 +01:00
E.T	13f12227bd	Remove ccache hack from dockerfiles (#1835 ) Now we have a proper solution in cmake	2024-01-30 21:32:01 +01:00
Herman Semenov	c9db21063b	Speedup compilation using ccache package (#1832 )	2024-01-30 20:55:59 +01:00
Mark Thompson	125184f300	Add audio playback ability to WAV Viewer app (#1829 )	2024-01-30 20:55:32 +01:00
ʎʞsʌoʞᴉɐɥɔꓕ ɹʇoʎꓒ	8068517808	add warn when enable stealth mode & add nav valid check (#1823 ) * add warn when enable stealth * change FLASH ERROR to FLASH ERR cuz previous one were overlapped with date * check if nav is valid	2024-01-30 13:58:40 +08:00
Mark Thompson	a4f6bbda5e	Fix compiler warning (#1827 ) * Fix compiler warning * Fix compiler warning * Friggin C-lang	2024-01-29 18:07:32 -06:00
Totoo	8b2598fdac	Call the flasher app when flashing from serial (#1825 )	2024-01-29 20:52:35 +01:00
sommermoregentraum	c36fe78bd5	pacman: cheat lifes and cheat skip level (#1821 ) cheat lives and cheat skip level and fixed review issue. Thanks @NotherNgineer	2024-01-29 00:54:13 +08:00
Mark Thompson	bd8385464e	Tuner code readability (no functional change) (#1820 )	2024-01-28 10:02:11 -06:00
Totoo	8c996b5bc6	Embedded friendly usb (#1817 )	2024-01-27 19:33:08 +01:00
Mark Thompson	d1901939e1	Fix tuning of 2170-2300 and 2700-2740 MHz (#1819 )	2024-01-27 13:30:32 +01:00
Mark Thompson	41ec11fb66	Check app checksums during untar (#1815 )	2024-01-27 13:29:24 +01:00
Mark Thompson	df47490d85	Allow 3 boot failures before Config Mode starts (#1816 ) * Allow 3 boot attempts before Config Mode starts * Add files via upload	2024-01-26 21:02:52 +13:00
Totoo	a2f6d14b15	ISS for aprs, for the request #1810 (#1814 )	2024-01-25 21:10:43 +01:00
Mark Thompson	6a6c6d6502	Add Checksums to Firmware & External App images (#1809 ) * Pad image to 1MB and add simple checksum * Test code to verify firmware checksum * Comment out unneeded zlib * Add files via upload * Print space remaining in ROM * Append checksum to external apps too * Check external app checksums when loading * Is it 2024 already?! * Validate firmware checksum before flashing * Add files via upload * Added flash error warning to nav screen * Clang * Replaced some hard-coded values with #defines * Check FW checksum before USB serial flash too * Add files via upload	2024-01-24 16:37:21 -06:00
Mark Thompson	2d98c5d311	Resolve Soundboard tone key issue (#1806 ) * Resolve Soundboard tone key issue	2024-01-23 20:53:04 +01:00
sommermoregentraum	03b13f8ab0	prevent crash when nothing to broadcast in soundbrd app (#1807 ) * prevent crash when nothing to broadcast in soundbrd app * format	2024-01-22 22:15:37 -06:00
E.T	6e74ad942f	Gh workflow changelog formatting fix (#1803 ) * Remove replacement of newlines with hex codes Assuming that its unnecessary as we are no longer outputting these via stdout but pipe it into some binary that could handle newlines in its stdin therefore don't need and support this transformation * Attempt 2 after reading gh docs :D * Fix changelog for stable release too	2024-01-22 10:50:14 +01:00
Mark Thompson	0f85f247b6	Fix rounding bug when displaying frequencies (#1801 )	2024-01-22 07:54:29 +01:00
sommermoregentraum	ac1d350aaf	add a item that warn user to put ext app if nothing to pop in home page (#1798 ) add an item that warn user to put ext app if nothing to pop	2024-01-22 03:21:06 +08:00
Mark Thompson	5f8e1ef307	Daylight Savings Time support (#1793 ) * Daylight Savings Time support * Cleanup * Clean-up * Revert ADSB change * Clean-up * Corrected date in comment, ironically	2024-01-21 12:47:28 -06:00
E.T	aa5d4ad078	Update github workflow to remove deprecated set-output usage (#1799 )	2024-01-22 07:24:38 +13:00
sommermoregentraum	44d9572f5c	add_bitmap_reverse_decode (#1795 )	2024-01-21 18:51:08 +08:00
sommermoregentraum	3314001205	bring keyfob app back (#1794 ) * bring keyfob app back * format * cleanup * format * remove committed line from original list	2024-01-21 11:49:17 +01:00
E.T	ce1084abc7	Introduce common app list for menu and serial (#1791 )	2024-01-20 23:35:39 +01:00
E.T	ea8563cb19	Fix workflow to pick up the OCI named ppfw (#1787 )	2024-01-18 21:08:02 +01:00
Mark Thompson	b3c1c83677	Remove time from PPFW filename and modify Flash app to support .tar (#1783 ) * Update timestamp in PPFW filename * Only include today's DATE in filename * Remove date from PPFW filename * Allow any .tar file name in FIRMWARE folder * Add files via upload * Removed unnecessary lines per ufoka	2024-01-18 13:59:44 -06:00
Totoo	fcbc3b4d75	pmemreset and settingsreset commands (#1786 )	2024-01-18 16:12:13 +01:00