better rs41 (#2757 )

move soundbrd app external (#2756 )
frequency keypad opt (#2755 )
2026-09-14 10:39:30 +00:00 · 2025-08-15 16:24:07 +02:00 · 2025-08-15 13:31:18 +02:00 · 2025-08-13 14:25:21 +02:00 · 2025-08-13 14:24:18 +02:00 · 2025-08-11 07:42:58 +02:00
62 changed files with 4470 additions and 1434 deletions
@@ -1 +1 @@
-v2.0.2
+v2.1.0
@@ -1 +1 @@
-v2.1.0
+v2.2.0
@@ -62,6 +62,7 @@ cmake-build-debug/
 .vscode
 .idea
 *.swp
+.claude

 # VSCodium extensions
 .history
@@ -270,13 +270,10 @@ set(CPPSRC
 	ui/ui_bmpview.cpp
 	apps/ais_app.cpp
 	apps/analog_audio_app.cpp
-	apps/ble_comm_app.cpp
 	apps/ble_rx_app.cpp
 	apps/ble_tx_app.cpp
 	apps/capture_app.cpp
-	apps/ert_app.cpp
 	apps/pocsag_app.cpp
-	apps/soundboard_app.cpp
 	apps/ui_about_simple.cpp
 	apps/ui_adsb_rx.cpp
 	apps/ui_aprs_rx.cpp
@@ -301,7 +301,7 @@ AISRecentEntryDetailView::AISRecentEntryDetailView(NavigationView& nav) {
            ais::format::text(entry_.name),
            0,
            GeoPos::alt_unit::METERS,
-            GeoPos::spd_unit::NONE,
+            GeoPos::spd_unit::KNOTS,
            ais::format::latlon_float(entry_.last_position.latitude.normalized()),
            ais::format::latlon_float(entry_.last_position.longitude.normalized()),
            entry_.last_position.true_heading,
@@ -324,7 +324,31 @@ AISRecentEntryDetailView& AISRecentEntryDetailView::operator=(const AISRecentEnt

 void AISRecentEntryDetailView::update_position() {
    if (send_updates)
-        geomap_view->update_position(ais::format::latlon_float(entry_.last_position.latitude.normalized()), ais::format::latlon_float(entry_.last_position.longitude.normalized()), (float)entry_.last_position.true_heading, 0, entry_.last_position.speed_over_ground);
+        geomap_view->update_position(ais::format::latlon_float(entry_.last_position.latitude.normalized()), ais::format::latlon_float(entry_.last_position.longitude.normalized()), (float)entry_.last_position.true_heading, 0, entry_.last_position.speed_over_ground > 1022 ? 0 : entry_.last_position.speed_over_ground);
+}
+
+bool AISRecentEntryDetailView::add_map_marker(const AISRecentEntry& entry) {
+    if (geomap_view && send_updates) {
+        GeoMarker marker{};
+        marker.lon = ais::format::latlon_float(entry.last_position.longitude.normalized());
+        marker.lat = ais::format::latlon_float(entry.last_position.latitude.normalized());
+        marker.angle = entry.last_position.true_heading;
+        marker.tag = entry.call_sign.empty() ? to_string_dec_uint(entry.mmsi) : entry.call_sign;
+        auto markerStored = geomap_view->store_marker(marker);
+        return markerStored == MARKER_STORED;
+    }
+    return false;
+}
+void AISRecentEntryDetailView::update_map_markers(AISRecentEntries& entries) {
+    if (geomap_view && send_updates) {
+        geomap_view->clear_markers();
+        for (const auto& entry : entries) {
+            // if (entry.last_position.latitude.is_valid() && entry.last_position.longitude.is_valid()) {
+            add_map_marker(entry);
+            // }
+        }
+        update_position();  // to update view
+    }
 }

 void AISRecentEntryDetailView::focus() {
@@ -415,14 +439,27 @@ AISAppView::AISAppView(NavigationView& nav)
        audio::set_rate(audio::Rate::Hz_24000);
        audio::output::start();
    }
+
+    signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
+        on_tick_second();
+    };
 }

 AISAppView::~AISAppView() {
+    rtc_time::signal_tick_second -= signal_token_tick_second;
    audio::output::stop();
    receiver_model.disable();
    baseband::shutdown();
 }

+void AISAppView::on_tick_second() {
+    ++timer_seconds;
+    if (timer_seconds % 10 == 0) {
+        if (recent_entry_detail_view.hidden()) return;
+        recent_entry_detail_view.update_map_markers(recent);
+    }
+}
+
 void AISAppView::focus() {
    options_channel.focus();
 }
@@ -461,6 +498,7 @@ void AISAppView::on_show_detail(const AISRecentEntry& entry) {
    recent_entry_detail_view.hidden(false);
    recent_entry_detail_view.set_entry(entry);
    recent_entry_detail_view.focus();
+    recent_entry_detail_view.update_map_markers(recent);
 }

 } /* namespace ui */
@@ -125,10 +125,14 @@ class AISRecentEntryDetailView : public View {
    void update_position();
    void focus() override;
    void paint(Painter&) override;
+    bool add_map_marker(const AISRecentEntry& entry);
+    void update_map_markers(AISRecentEntries& entries);

    AISRecentEntryDetailView(const AISRecentEntryDetailView& Entry);
    AISRecentEntryDetailView& operator=(const AISRecentEntryDetailView& Entry);

+    GeoMapView* get_geomap_view() { return geomap_view; }
+
   private:
    AISRecentEntry entry_{};

@@ -215,6 +219,8 @@ class AISAppView : public View {
    Channel channel{
        {21 * 8, 5, 6 * 8, 4},
    };
+    SignalToken signal_token_tick_second{};
+    uint8_t timer_seconds = 0;

    MessageHandlerRegistration message_handler_packet{
        Message::ID::AISPacket,
@@ -229,6 +235,7 @@ class AISAppView : public View {
    void on_packet(const ais::Packet& packet);
    void on_show_list();
    void on_show_detail(const AISRecentEntry& entry);
+    void on_tick_second();
 };

 } /* namespace ui */
@@ -69,7 +69,7 @@ static std::uint64_t get_freq_by_channel_number(uint8_t channel_number) {
 }

 void BLECommView::focus() {
-    options_channel.focus();
+    field_frequency.focus();
 }

 BLECommView::BLECommView(NavigationView& nav)
@@ -79,10 +79,7 @@ BLECommView::BLECommView(NavigationView& nav)
                  &field_rf_amp,
                  &field_lna,
                  &field_vga,
-                  &options_channel,
                  &field_frequency,
-                  &label_send_adv,
-                  &button_send_adv,
                  &check_log,
                  &label_packets_sent,
                  &text_packets_sent,
@@ -90,10 +87,6 @@ BLECommView::BLECommView(NavigationView& nav)

    field_frequency.set_step(0);

-    button_send_adv.on_select = [this](ImageButton&) {
-        this->toggle();
-    };
-
    check_log.set_value(logging);

    check_log.on_select = [this](Checkbox&, bool v) {
@@ -104,27 +97,8 @@ BLECommView::BLECommView(NavigationView& nav)
            logger->append(logs_dir.string() + "/BLELOG_" + to_string_timestamp(rtc_time::now()) + ".TXT");
    };

-    options_channel.on_change = [this](size_t, int32_t i) {
-        // If we selected Auto don't do anything and Auto will handle changing.
-        if (i == 40) {
-            auto_channel = true;
-            return;
-        } else {
-            auto_channel = false;
-        }
-
-        field_frequency.set_value(get_freq_by_channel_number(i));
-        channel_number_rx = i;
-        channel_number_tx = i;
-    };
-
-    options_channel.set_selected_index(3, true);
-
    logger = std::make_unique<BLECommLogger>();

-    // Generate new random Mac Address upon each new startup.
-    generateRandomMacAddress(randomMac);
-
    // Setup Initial Advertise Packet.
    advertisePacket = build_adv_packet();
 }
@@ -145,86 +119,66 @@ bool BLECommView::in_tx_mode() const {
    return (bool)is_running_tx;
 }

-void BLECommView::toggle() {
-    if (in_tx_mode()) {
-        sendAdvertisement(false);
-    } else {
-        sendAdvertisement(true);
-    }
-}
-
 BLETxPacket BLECommView::build_adv_packet() {
    BLETxPacket bleTxPacket;
    memset(&bleTxPacket, 0, sizeof(BLETxPacket));

-    std::string dataString = "11094861636b524620506f7274617061636b";
-
-    strncpy(bleTxPacket.macAddress, randomMac, 12);
+    std::string dataString = "02010603030F1807084861636B5246";
    strncpy(bleTxPacket.advertisementData, dataString.c_str(), dataString.length());

-    // Duty cycle of 40% per 100ms advertisment periods.
-    strncpy(bleTxPacket.packetCount, "80", 3);
-    bleTxPacket.packet_count = 80;
+    strncpy(bleTxPacket.packetCount, "1", 2);
+    bleTxPacket.packet_count = 1;

-    bleTxPacket.packetType = PKT_TYPE_DISCOVERY;
+    bleTxPacket.pduType = PKT_TYPE_ADV_IND;

    return bleTxPacket;
 }

-void BLECommView::sendAdvertisement(bool enable) {
-    if (enable) {
-        startTx(advertisePacket);
-        is_adv = true;
-    } else {
-        is_adv = false;
-        stopTx();
-    }
+void BLECommView::sendAdvertisement(void) {
+    startTx(advertisePacket);
+    ble_state = Ble_State_Advertising;
 }

 void BLECommView::startTx(BLETxPacket packetToSend) {
-    int randomChannel = channel_number_tx;
+    switch_rx_tx(false);

-    if (auto_channel) {
-        int min = 37;
-        int max = 39;
+    currentPacket = packetToSend;
+    packet_counter = currentPacket.packet_count;

-        randomChannel = min + std::rand() % (max - min + 1);
-
-        field_frequency.set_value(get_freq_by_channel_number(randomChannel));
+    switch (advCount) {
+        case 0:
+            channel_number_tx = 37;
+            break;
+        case 1:
+            channel_number_tx = 38;
+            break;
+        case 2:
+            channel_number_tx = 39;
+            break;
    }

-    if (!in_tx_mode()) {
-        switch_rx_tx(false);
+    field_frequency.set_value(get_freq_by_channel_number(37));

-        currentPacket = packetToSend;
-        packet_counter = currentPacket.packet_count;
+    advCount++;

-        button_send_adv.set_bitmap(&bitmap_stop);
-        baseband::set_btletx(randomChannel, currentPacket.macAddress, currentPacket.advertisementData, currentPacket.packetType);
-        transmitter_model.set_tx_gain(47);
-        transmitter_model.enable();
-
-        is_running_tx = true;
-    } else {
-        baseband::set_btletx(randomChannel, currentPacket.macAddress, currentPacket.advertisementData, currentPacket.packetType);
+    if (advCount == 3) {
+        advCount = 0;
    }

-    if ((packet_counter % 10) == 0) {
-        text_packets_sent.set(to_string_dec_uint(packet_counter));
-    }
+    baseband::set_btletx(37, deviceMAC, currentPacket.advertisementData, currentPacket.pduType);
+    transmitter_model.set_tx_gain(47);
+    transmitter_model.enable();

-    is_sending = true;
-
-    packet_counter--;
+    is_running_tx = true;
 }

 void BLECommView::stopTx() {
-    button_send_adv.set_bitmap(&bitmap_play);
    text_packets_sent.set(to_string_dec_uint(packet_counter));

    switch_rx_tx(true);

    baseband::set_btlerx(channel_number_rx);
+    field_frequency.set_value(get_freq_by_channel_number(channel_number_rx));
    receiver_model.enable();

    is_running_tx = false;
@@ -248,14 +202,12 @@ void BLECommView::on_data(BlePacketData* packet) {
    parse_received_packet(packet, (ADV_PDU_TYPE)packet->type);
 }

-// called each 1/60th of second, so 6 = 100ms
 void BLECommView::on_timer() {
-    // Send advertise burst only once every 100ms
    if (++timer_counter == timer_period) {
        timer_counter = 0;

-        if (!is_adv) {
-            sendAdvertisement(true);
+        if (ble_state == Ble_State_Receiving || ble_state == Ble_State_Idle) {
+            sendAdvertisement();
        }
    }
 }
@@ -263,17 +215,18 @@ void BLECommView::on_timer() {
 void BLECommView::on_tx_progress(const bool done) {
    if (done) {
        if (in_tx_mode()) {
-            is_sending = false;
+            ble_state = Ble_State_Receiving;

-            if (packet_counter == 0) {
-                if (is_adv) {
-                    sendAdvertisement(false);
-                } else {
-                    stopTx();
-                }
-            } else {
-                startTx(currentPacket);
-            }
+            timer_counter = 0;
+            timer_period = 12;
+
+            stopTx();
+
+            // else
+            // {
+            //     startTx(advertisePacket);
+            //     advCount++;
+            // }
        }
    }
 }
@@ -309,23 +262,28 @@ void BLECommView::parse_received_packet(const BlePacketData* packet, ADV_PDU_TYP
    }

    if (pdu_type == SCAN_REQ || pdu_type == CONNECT_REQ) {
-        ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)packet->data;
-
-        std::reverse(directed_mac_data->A1, directed_mac_data->A1 + 6);
-        console.clear(true);
-        std::string str_console = "";
-        std::string pduTypeStr = "";
-
        if (pdu_type == SCAN_REQ) {
-            pduTypeStr += "SCAN_REQ";
-        } else if (pdu_type == CONNECT_REQ) {
-            pduTypeStr += "CONNECT_REQ";
-        }
+            ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)packet->data;

-        str_console += "PACKET TYPE:" + pduTypeStr + "\n";
-        str_console += "MY MAC:" + to_string_formatted_mac_address(randomMac) + "\n";
-        str_console += "SCAN MAC:" + to_string_mac_address(directed_mac_data->A1, 6, false) + "\n";
-        console.write(str_console);
+            std::reverse(directed_mac_data->A1, directed_mac_data->A1 + 6);
+            std::string directedMAC = to_string_mac_address(directed_mac_data->A1, 6, false);
+
+            // Compare directed MAC Hex with the device MAC.
+            if (1) {
+                // std::string str_console = "Received SCAN_REQ from directed MAC: " + directedMAC + "\n";
+                // console.clear(true);
+                // console.writeln(str_console);
+            }
+        } else if (pdu_type == CONNECT_REQ) {
+            ADV_PDU_PAYLOAD_TYPE_5* connectReq = (ADV_PDU_PAYLOAD_TYPE_5*)packet->data;
+
+            std::reverse(connectReq->AdvA, connectReq->AdvA + 6);
+            std::string directedMAC = to_string_mac_address(connectReq->AdvA, 6, false);
+
+            std::string str_console = "Received CONNECT_REQ from directed MAC: " + directedMAC + "\n";
+            console.clear(true);
+            console.writeln(str_console);
+        }
    }
 }

@@ -76,7 +76,16 @@ class BLECommView : public View {
    void on_data(BlePacketData* packetData);
    void on_tx_progress(const bool done);
    void parse_received_packet(const BlePacketData* packet, ADV_PDU_TYPE pdu_type);
-    void sendAdvertisement(bool enable);
+    void sendAdvertisement(void);
+
+    typedef enum {
+        Ble_State_Idle = 0,
+        Ble_State_Advertising = 1,
+        Ble_State_Receiving = 2,
+        Ble_State_Sending = 3
+    } BleState;
+
+    BleState ble_state{Ble_State_Idle};

    NavigationView& nav_;

@@ -101,8 +110,9 @@ class BLECommView : public View {
    uint8_t channel_number_tx = 37;
    uint8_t channel_number_rx = 37;
    bool auto_channel = false;
+    uint8_t advCount = 0;

-    char randomMac[13] = "010203040506";
+    char deviceMAC[13] = "C23456789ABC";

    bool is_running_tx = false;
    bool is_sending = false;
@@ -111,7 +121,7 @@ class BLECommView : public View {
    int16_t timer_period{6};  // Delay each packet by 16ms.
    int16_t timer_counter = 0;
    int16_t timer_rx_counter = 0;
-    int16_t timer_rx_period{12};  // Poll Rx for at least 200ms. (TBD)
+    int16_t timer_rx_period{12};  // Poll Rx for at least 150ms. (TBD)

    uint32_t packet_counter{0};
    BLETxPacket advertisePacket{};
@@ -147,15 +157,6 @@ class BLECommView : public View {
    Channel channel{
        {24 * 8, 5, 6 * 8, 4}};

-    Labels label_send_adv{
-        {{0 * 8, 2 * 8}, "Send Advertisement:", Theme::getInstance()->fg_light->foreground}};
-
-    ImageButton button_send_adv{
-        {21 * 8, 1 * 16, 10 * 8, 2 * 16},
-        &bitmap_play,
-        Theme::getInstance()->fg_green->foreground,
-        Theme::getInstance()->fg_green->background};
-
    Checkbox check_log{
        {24 * 8, 2 * 8},
        3,
@@ -57,95 +57,6 @@ std::string pad_string_with_spaces(int snakes) {
    return paddedStr;
 }

-struct GainEntry {
-    uint8_t lna;
-    uint8_t vga;
-    uint8_t gain;
-};
-
-// Only LNA with VGA 0-4 is tested to be accurate. Max zeroized gain tested to be 16dBm.
-// Beyond that it is hard to tell distance to transmitting device.
-// Test was conducted within a few inches of the device.
-// Device was transmitting at 0dBm.
-constexpr GainEntry gain_table[] =
-    {
-        {40, 0, 19},
-        {32, 0, 18},
-        {24, 0, 15},
-        {16, 0, 8},
-        {8, 0, 2},
-        {0, 0, 0},
-        {40, 2, 20},
-        {32, 2, 22},
-        {24, 2, 14},
-        {16, 2, 8},
-        {8, 2, 2},
-        {0, 2, 0},
-        {40, 4, 21},
-        {32, 4, 22},
-        {24, 4, 15},
-        {16, 4, 10},
-        {8, 4, 3},
-        {0, 4, 0},
-        {40, 6, 26},
-        {32, 6, 22},
-        {24, 6, 15},
-        {16, 6, 10},
-        {8, 6, 4},
-        {0, 6, 0},
-        {40, 8, 26},
-        {32, 8, 26},
-        {24, 8, 18},
-        {16, 8, 12},
-        {8, 8, 6},
-        {0, 8, 1},
-        {40, 10, 26},
-        {32, 10, 26},
-        {24, 10, 20},
-        {16, 10, 15},
-        {8, 10, 8},
-        {0, 10, 3},
-        {40, 12, 26},
-        {32, 12, 26},
-        {24, 12, 23},
-        {16, 12, 17},
-        {8, 12, 10},
-        {0, 12, 4},
-        {40, 14, 26},
-        {32, 14, 26},
-        {24, 14, 25},
-        {16, 14, 19},
-        {8, 14, 12},
-        {0, 14, 6},
-        {40, 16, 26},
-        {32, 16, 26},
-        {24, 16, 26},
-        {16, 16, 20},
-        {8, 16, 13},
-        {0, 16, 7},
-        {40, 18, 26},
-        {32, 18, 26},
-        {24, 18, 26},
-        {16, 18, 21},
-        {8, 18, 14},
-        {0, 18, 8},
-        {40, 20, 26},
-        {32, 20, 26},
-        {24, 20, 26},
-        {16, 20, 23},
-        {8, 20, 16},
-        {0, 20, 10},
-};
-
-uint8_t get_total_gain(uint8_t lna, uint8_t vga) {
-    for (const auto& entry : gain_table) {
-        if (entry.lna == lna && entry.vga == vga)
-            return entry.gain;
-    }
-
-    return 0;
-}
-
 uint64_t copy_mac_address_to_uint64(const uint8_t* macAddress) {
    uint64_t result = 0;

@@ -275,10 +186,10 @@ void RecentEntriesTable<BleRecentEntries>::draw(
    if (!entry.nameString.empty() && entry.include_name) {
        line = entry.nameString;

-        if (line.length() < 10) {
-            line += pad_string_with_spaces(10 - line.length());
+        if (line.length() < 17) {
+            line += pad_string_with_spaces(17 - line.length());
        } else {
-            line = truncate(line, 10);
+            line = truncate(line, 17);
        }
    } else {
        line = to_string_mac_address(entry.packetData.macAddress, 6, false);
@@ -289,12 +200,12 @@ void RecentEntriesTable<BleRecentEntries>::draw(
    if (!entry.informationString.empty()) {
        hitsStr = entry.informationString;
    } else {
-        hitsStr = "Hits: " + to_string_dec_int(entry.numHits);
+        hitsStr = to_string_dec_int(entry.numHits);
    }

    // Pushing single digit values down right justified.
    int hitsDigits = hitsStr.length();
-    uint8_t hits_spacing = 14 - hitsDigits;
+    uint8_t hits_spacing = 8 - hitsDigits;

    // Pushing single digit values down right justified.
    std::string dbStr = to_string_dec_int(entry.dbValue);
@@ -336,7 +247,7 @@ BleRecentEntryDetailView::BleRecentEntryDetailView(NavigationView& nav, const Bl
    };

    button_send.on_select = [this, &nav](const ui::Button&) {
-        auto packetToSend = build_packet();
+        auto packetToSend = build_packet(entry_);
        nav.set_on_pop([packetToSend, &nav]() {
            nav.replace<BLETxView>(packetToSend);
        });
@@ -344,7 +255,7 @@ BleRecentEntryDetailView::BleRecentEntryDetailView(NavigationView& nav, const Bl
    };

    button_save.on_select = [this, &nav](const ui::Button&) {
-        auto packetToSave = build_packet();
+        auto packetToSave = build_packet(entry_);

        packetFileBuffer = "";
        text_prompt(
@@ -525,7 +436,7 @@ void BleRecentEntryDetailView::set_entry(const BleRecentEntry& entry) {
    set_dirty();
 }

-BLETxPacket BleRecentEntryDetailView::build_packet() {
+BLETxPacket BleRecentEntryDetailView::build_packet(BleRecentEntry entry_) {
    BLETxPacket bleTxPacket;
    memset(&bleTxPacket, 0, sizeof(BLETxPacket));

@@ -533,8 +444,8 @@ BLETxPacket BleRecentEntryDetailView::build_packet() {

    strncpy(bleTxPacket.macAddress, macAddressStr.c_str(), 12);
    strncpy(bleTxPacket.advertisementData, entry_.dataString.c_str(), entry_.packetData.dataLen * 2);
-    strncpy(bleTxPacket.packetCount, "50", 3);
-    bleTxPacket.packet_count = 50;
+    strncpy(bleTxPacket.packetCount, "10", 3);
+    bleTxPacket.packet_count = 10;

    return bleTxPacket;
 }
@@ -584,16 +495,18 @@ BLERxView::BLERxView(NavigationView& nav)
                  &field_vga,
                  &options_channel,
                  &field_frequency,
-                  &check_log,
-                  &button_find,
-                  &check_name,
                  &label_sort,
                  &options_sort,
-                  &label_found,
-                  &text_found_count,
-                  &check_serial_log,
                  &button_filter,
                  &options_filter,
+                  &check_name,
+                  &check_log,
+                  &check_serial_log,
+                  &check_unique,
+                  &check_duplicate_packets,
+                  &button_find,
+                  &label_found,
+                  &text_found_count,
                  &button_save_list,
                  &button_clear_list,
                  &button_switch,
@@ -605,6 +518,29 @@ BLERxView::BLERxView(NavigationView& nav)
        nav_.push<BleRecentEntryDetailView>(entry);
    };

+    ensure_directory(find_packet_path);
+    ensure_directory(log_packets_path);
+    ensure_directory(packet_save_path);
+
+    // ------------------------------------------------------------------------------
+    // Handle Check Boxes
+    // ------------------------------------------------------------------------------
+    logger = std::make_unique<BLELogger>();
+
+    check_name.on_select = [this](Checkbox&, bool v) {
+        name_enable = v;
+        // update the include_name instance variable value of each entry in recent entries
+        setAllMembersToValue(recent, &BleRecentEntry::include_name, v);
+        recent_entries_view.set_dirty();
+    };
+
+    check_log.on_select = [this](Checkbox&, bool v) {
+        logging = v;
+
+        if (logger && logging)
+            logger->append(bletx_dir.string() + "/Packets/BLETx_" + to_string_timestamp(rtc_time::now()) + ".TXT");
+    };
+
    check_serial_log.on_select = [this](Checkbox&, bool v) {
        serial_logging = v;
        if (v) {
@@ -613,12 +549,28 @@ BLERxView::BLERxView(NavigationView& nav)
            portapack::async_tx_enabled = false;
        }
    };
+
+    check_unique.on_select = [this](Checkbox&, bool v) {
+        uniqueParsing = v;
+        recent.clear();
+        recent_entries_view.set_dirty();
+    };
+
+    check_duplicate_packets.on_select = [this](Checkbox&, bool v) {
+        duplicatePackets = v;
+        recent.clear();
+        recent_entries_view.set_dirty();
+    };
+
+    check_name.set_value(name_enable);
+    check_log.set_value(logging);
    check_serial_log.set_value(serial_logging);
+    check_unique.set_value(uniqueParsing);
+    check_duplicate_packets.set_value(duplicatePackets);

-    ensure_directory(find_packet_path);
-    ensure_directory(log_packets_path);
-    ensure_directory(packet_save_path);
-
+    // ------------------------------------------------------------------------------
+    // Handle Buttons
+    // ------------------------------------------------------------------------------
    filterBuffer = filter;

    button_filter.on_select = [this](Button&) {
@@ -632,16 +584,6 @@ BLERxView::BLERxView(NavigationView& nav)
            });
    };

-    logger = std::make_unique<BLELogger>();
-
-    check_log.on_select = [this](Checkbox&, bool v) {
-        logging = v;
-
-        if (logger && logging)
-            logger->append(blerx_dir.string() + "/Logs/BLELOG_" + to_string_timestamp(rtc_time::now()) + ".TXT");
-    };
-    check_log.set_value(logging);
-
    button_save_list.on_select = [this, &nav](const ui::Button&) {
        listFileBuffer = "";
        text_prompt(
@@ -663,17 +605,18 @@ BLERxView::BLERxView(NavigationView& nav)
        nav.replace<BLETxView>();
    };

-    field_frequency.set_step(0);
-
-    check_name.set_value(name_enable);
-
-    check_name.on_select = [this](Checkbox&, bool v) {
-        name_enable = v;
-        // update the include_name instance variable value of each entry in recent entries
-        setAllMembersToValue(recent, &BleRecentEntry::include_name, v);
-        recent_entries_view.set_dirty();
+    button_find.on_select = [this](Button&) {
+        auto open_view = nav_.push<FileLoadView>(".TXT");
+        open_view->on_changed = [this](std::filesystem::path new_file_path) {
+            on_file_changed(new_file_path);
+        };
    };

+    // ------------------------------------------------------------------------------
+    // Handle Options
+    // ------------------------------------------------------------------------------
+    field_frequency.set_step(0);
+
    options_channel.on_change = [this](size_t index, int32_t v) {
        channel_index = (uint8_t)index;

@@ -700,7 +643,6 @@ BLERxView::BLERxView(NavigationView& nav)
        filter_index = (uint8_t)index;
        recent.clear();
        handle_filter_options(v);
-        uniqueParsing = filter_index == 2 ? true : false;
        recent_entries_view.set_dirty();
    };

@@ -708,15 +650,6 @@ BLERxView::BLERxView(NavigationView& nav)
    options_sort.set_selected_index(sort_index, true);
    options_filter.set_selected_index(filter_index, true);

-    button_find.on_select = [this](Button&) {
-        auto open_view = nav_.push<FileLoadView>(".TXT");
-        open_view->on_changed = [this](std::filesystem::path new_file_path) {
-            on_file_changed(new_file_path);
-
-            // nav_.set_on_pop([this]() { button_play.focus(); });
-        };
-    };
-
    // Auto-configure modem for LCR RX (will be removed later)
    baseband::set_btlerx(channel_number);

@@ -874,22 +807,39 @@ bool BLERxView::saveFile(const std::filesystem::path& path) {
 }

 void BLERxView::on_data(BlePacketData* packet) {
-    uint64_t macAddressEncoded = copy_mac_address_to_uint64(packet->macAddress);
+    uint64_t uniqueKeyEncoded = copy_mac_address_to_uint64(packet->macAddress);

    // Start of Packet stuffing.
    // Masking off the top 2 bytes to avoid invalid keys.

-    BleRecentEntry tempEntry;
+    uint64_t key = (uniqueKeyEncoded & 0xFFFFFFFFFFFF);

-    if (updateEntry(packet, tempEntry, (ADV_PDU_TYPE)packet->type)) {
-        auto& entry = ::on_packet(recent, macAddressEncoded & 0xFFFFFFFFFFFF);
+    if (duplicatePackets) {
+        key |= ((uint64_t)packet->type) << 48;
+    }

-        // Preserve exisisting data from entry.
-        tempEntry.macAddress = macAddressEncoded;
-        tempEntry.numHits = ++entry.numHits;
+    bool packetExists = false;

-        entry = tempEntry;
+    // If found store into tempEntry to modify.
+    auto it = find(recent, key);
+    if (it != recent.end()) {
+        recent.push_front(*it);
+        recent.erase(it);
+        updateEntry(packet, recent.front(), (ADV_PDU_TYPE)packet->type);
+        packetExists = true;
+    } else {
+        recent.emplace_front(key);
+        truncate_entries(recent);

+        packetExists = updateEntry(packet, recent.front(), (ADV_PDU_TYPE)packet->type);
+
+        // If parsing failed, remove entry.
+        if (!packetExists) {
+            recent.erase(recent.begin());
+        }
+    }
+
+    if (packetExists) {
        handle_filter_options(options_filter.selected_index());
        handle_entries_sort(options_sort.selected_index());

@@ -899,7 +849,7 @@ void BLERxView::on_data(BlePacketData* packet) {
            while (it != searchList.end()) {
                std::string searchStr = (std::string)*it;

-                if (entry.dataString.find(searchStr) != std::string::npos) {
+                if (recent.front().dataString.find(searchStr) != std::string::npos) {
                    searchList.erase(it);
                    found_count++;
                    break;
@@ -943,10 +893,6 @@ void BLERxView::log_ble_packet(BlePacketData* packet) {
 void BLERxView::on_filter_change(std::string value) {
    // New filter? Reset list from recent entries.
    if (filter != value) {
-        // resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
-        //     // return (entry.dataString.find(value) == std::string::npos) && (entry.nameString.find(value) == std::string::npos);
-        //     return (entry.dataString.find(value) == std::string::npos) && (entry.nameString.find(value) == std::string::npos) && (to_string_mac_address(entry.packetData.macAddress, 6, false).find(value) == std::string::npos);
-        // });
        filter = value;
        handle_filter_options(options_filter.selected_index());
    }
@@ -1000,13 +946,10 @@ void BLERxView::on_timer() {
        timer_count = 0;

        if (auto_channel) {
-            int min = 37;
-            int max = 39;
+            field_frequency.set_value(get_freq_by_channel_number(channel_number));
+            baseband::set_btlerx(channel_number);

-            int randomChannel = min + std::rand() % (max - min + 1);
-
-            field_frequency.set_value(get_freq_by_channel_number(randomChannel));
-            baseband::set_btlerx(randomChannel);
+            channel_number = (channel_number < 39) ? channel_number + 1 : 37;
        }
    }
    if (ble_rx_error != BLE_RX_NO_ERROR) {
@@ -1027,7 +970,7 @@ void BLERxView::handle_entries_sort(uint8_t index) {
    switch (index) {
        case 0:
            sortEntriesBy(
-                recent, [](const BleRecentEntry& entry) { return entry.macAddress; }, true);
+                recent, [](const BleRecentEntry& entry) { return entry.uniqueKey & 0xFFFFFFFFFFFF; }, true);
            break;
        case 1:
            sortEntriesBy(
@@ -1045,6 +988,10 @@ void BLERxView::handle_entries_sort(uint8_t index) {
            sortEntriesBy(
                recent, [](const BleRecentEntry& entry) { return entry.nameString; }, true);
            break;
+        case 5:
+            sortEntriesBy(
+                recent, [](const BleRecentEntry& entry) { return entry.informationString; }, true);
+            break;
        default:
            break;
    }
@@ -1055,16 +1002,43 @@ void BLERxView::handle_entries_sort(uint8_t index) {
 void BLERxView::handle_filter_options(uint8_t index) {
    auto value = filter;
    switch (index) {
-        case 0:  // filter by Data
+        // Data
+        case 0:
            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
                return (entry.dataString.find(value) == std::string::npos) && (entry.nameString.find(value) == std::string::npos);
            });
            break;
-        case 1:  // filter by MAC address (All caps: e.g. AA:BB:CC:DD:EE:FF)
+        // MAC address (All caps: e.g. AA:BB:CC:DD:EE:FF)
+        case 1:
            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
                return (to_string_mac_address(entry.packetData.macAddress, 6, false).find(value) == std::string::npos);
            });
            break;
+        // Name
+        case 2:
+            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+                return (entry.nameString.find(value) == std::string::npos);
+            });
+            break;
+        // Info
+        case 3:
+            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+                return (entry.informationString.find(value) == std::string::npos);
+            });
+            break;
+        // Vendor
+        case 4:
+            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+                std::string vendor_name = lookup_mac_vendor(entry.packetData.macAddress);
+                return (vendor_name.find(value) == std::string::npos);
+            });
+            break;
+        // Channel
+        case 5:
+            resetFilteredEntries(recent, [&value](const BleRecentEntry& entry) {
+                return (to_string_dec_int(entry.channelNumber).find(value) == std::string::npos);
+            });
+            break;
        default:
            break;
    }
@@ -1087,64 +1061,181 @@ bool BLERxView::updateEntry(const BlePacketData* packet, BleRecentEntry& entry,

    bool success = false;

-    int i;
-
-    for (i = 0; i < packet->dataLen; i++) {
-        data_string += to_string_hex(packet->data[i], 2);
-    }
-
-    entry.dbValue = 2 * (packet->max_dB - get_total_gain(receiver_model.lna(), receiver_model.vga()));
-    entry.timestamp = to_string_timestamp(rtc_time::now());
-    entry.dataString = data_string;
-
-    entry.packetData.type = packet->type;
-    entry.packetData.size = packet->size;
-    entry.packetData.dataLen = packet->dataLen;
-
-    // Mac Address of sender.
-    entry.packetData.macAddress[0] = packet->macAddress[0];
-    entry.packetData.macAddress[1] = packet->macAddress[1];
-    entry.packetData.macAddress[2] = packet->macAddress[2];
-    entry.packetData.macAddress[3] = packet->macAddress[3];
-    entry.packetData.macAddress[4] = packet->macAddress[4];
-    entry.packetData.macAddress[5] = packet->macAddress[5];
-
-    entry.pduType = pdu_type;
-    entry.channelNumber = channel_number;
-
-    if (entry.vendor_status == MAC_VENDOR_UNKNOWN) {
-        std::string vendor_name;
-        entry.vendor_status = lookup_mac_vendor_status(entry.packetData.macAddress, vendor_name);
-    }
-
-    // Parse Data Section into buffer to be interpretted later.
-    for (int i = 0; i < packet->dataLen; i++) {
-        entry.packetData.data[i] = packet->data[i];
-    }
-
-    entry.include_name = check_name.value();
-
    // Only parse name for advertisment packets and empty name entries
-    if (pdu_type == ADV_IND || pdu_type == ADV_NONCONN_IND)  // || pdu_type == SCAN_RSP || pdu_type == ADV_SCAN_IND)
-    {
+    if (pdu_type == ADV_IND || pdu_type == ADV_NONCONN_IND || pdu_type == SCAN_RSP || pdu_type == ADV_SCAN_IND) {
        if (uniqueParsing) {
-            // Add your unique beacon parsing function here.
+            success = parse_tracking_beacon_data(packet->data, packet->dataLen, entry.nameString, entry.informationString);
        }

        if (!success && !uniqueParsing) {
            success = parse_beacon_data(packet->data, packet->dataLen, entry.nameString, entry.informationString);
        }
-
    } else if (pdu_type == ADV_DIRECT_IND || pdu_type == SCAN_REQ) {
-        ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)entry.packetData.data;
-        reverse_byte_array(directed_mac_data->A1, 6);
+        if (!uniqueParsing) {
+            ADV_PDU_PAYLOAD_TYPE_1_3* directed_mac_data = (ADV_PDU_PAYLOAD_TYPE_1_3*)packet->data;
+            reverse_byte_array(directed_mac_data->A1, 6);
+            success = true;
+        }
+    }
+
+    if (success) {
+        int i;
+
+        for (i = 0; i < packet->dataLen; i++) {
+            data_string += to_string_hex(packet->data[i], 2);
+        }
+
+        entry.dbValue = packet->max_dB - (receiver_model.lna() + receiver_model.vga() + (receiver_model.rf_amp() ? 14 : 0));
+        entry.timestamp = to_string_timestamp(rtc_time::now());
+        entry.dataString = data_string;
+
+        entry.packetData.type = packet->type;
+        entry.packetData.size = packet->size;
+        entry.packetData.dataLen = packet->dataLen;
+
+        // Mac Address of sender.
+        entry.packetData.macAddress[0] = packet->macAddress[0];
+        entry.packetData.macAddress[1] = packet->macAddress[1];
+        entry.packetData.macAddress[2] = packet->macAddress[2];
+        entry.packetData.macAddress[3] = packet->macAddress[3];
+        entry.packetData.macAddress[4] = packet->macAddress[4];
+        entry.packetData.macAddress[5] = packet->macAddress[5];
+
+        entry.pduType = pdu_type;
+        entry.channelNumber = channel_number;
+        entry.numHits++;
+
+        if (entry.vendor_status == MAC_VENDOR_UNKNOWN) {
+            std::string vendor_name;
+            entry.vendor_status = lookup_mac_vendor_status(entry.packetData.macAddress, vendor_name);
+        }
+
+        // Parse Data Section into buffer to be interpretted later.
+        for (int i = 0; i < packet->dataLen; i++) {
+            entry.packetData.data[i] = packet->data[i];
+        }
+
+        entry.include_name = check_name.value();
    }

    return success;
 }

+bool BLERxView::parse_tracking_beacon_data(const uint8_t* data, uint8_t length, std::string& nameString, std::string& informationString) {
+    uint8_t currentByte, currentLength, currentType = 0;
+
+    for (currentByte = 0; currentByte < length;) {
+        currentLength = data[currentByte++];
+        currentType = data[currentByte++];
+
+        // Manufacturer Specific Data (0xFF)
+        if (currentType == 0xFF && currentLength >= 4) {
+            uint16_t companyID = data[currentByte] | (data[currentByte + 1] << 8);
+
+            // Apple AirTag / Find My
+            if (companyID == 0x004C && currentLength >= 6) {
+                uint8_t appleType = data[currentByte + 2];
+                uint8_t appleLen = data[currentByte + 3];
+                if (appleType == 0x12 && appleLen == 0x19 && currentLength >= 4 + appleLen) {
+                    nameString.assign("Apple AirTag");
+                    informationString.assign("Find My");
+                    return true;
+                } else if (appleType == 0x02 && appleLen == 0x15) {
+                    uint16_t major = (data[currentByte + 20] << 8) | data[currentByte + 21];
+                    uint16_t minor = (data[currentByte + 22] << 8) | data[currentByte + 23];
+
+                    nameString.assign("iBeacon");
+                    informationString.assign(to_string_hex(major) + to_string_hex(minor));
+                    return true;
+                }
+            }
+        }
+        // Services
+        else if ((currentType == 0x02 || currentType == 0x03) && currentLength >= 3) {
+            for (int u = 0; u < currentLength - 1; u += 2) {
+                uint16_t uuid16 = data[currentByte + u] | (data[currentByte + u + 1] << 8);
+                if (uuid16 == 0x1802) {  // Immediate Alert Service = Find Me Profile
+                    nameString.assign("FindMe");
+                    informationString.assign("IAS");
+                    return true;
+                }
+            }
+        }
+        // Service Data
+        else if (currentType == 0x16 && currentLength >= 3) {
+            uint16_t uuid16 = data[currentByte] | (data[currentByte + 1] << 8);
+
+            switch (uuid16) {
+                case 0xFD59: {  // Samsung SmartTag - Unregistered
+                    nameString.assign("Samsung SmartTag");
+                    informationString.assign("Unreg");
+                    return true;
+                }
+                case 0xFD5A: {  // Samsung SmartTag - Registered
+                    nameString.assign("Samsung SmartTag");
+                    informationString.assign("Reg");
+                    return true;
+                }
+                case 0xFD84: {
+                    if (currentByte + 2 < length) {
+                        uint8_t model = data[currentByte + 2];
+                        switch (model) {
+                            case 0x01:
+                                informationString.assign("Mate");
+                                break;
+                            case 0x02:
+                                informationString.assign("Pro");
+                                break;
+                            case 0x03:
+                                informationString.assign("Slim");
+                                break;
+                            case 0x04:
+                                informationString.assign("Sticker");
+                                break;
+                            default:
+                                informationString.assign("Unknown");
+                                break;
+                        }
+                    }
+                    nameString.assign("Tile");
+                    return true;
+                }
+                case 0xFEAA: {
+                    if (currentByte + 2 < length) {
+                        uint8_t frameType = data[currentByte + 2];
+                        switch (frameType) {
+                            case 0x00:
+                                informationString.assign("UID");
+                                break;
+                            case 0x10:
+                                informationString.assign("URL");
+                                break;
+                            case 0x20:
+                                informationString.assign("TLM");
+                                break;
+                            case 0x30:
+                                informationString.assign("EID");
+                                break;
+                            default:
+                                informationString.assign("Unknown");
+                                break;
+                        }
+                    }
+                    nameString.assign("Eddystone");
+                    return true;
+                }
+            }
+        }
+
+        currentByte += (currentLength - 1);
+    }
+
+    return false;
+}
+
 bool BLERxView::parse_beacon_data(const uint8_t* data, uint8_t length, std::string& nameString, std::string& informationString) {
    uint8_t currentByte, currentLength, currentType = 0;
+    std::string tempName = "";

    for (currentByte = 0; currentByte < length;) {
        currentLength = data[currentByte++];
@@ -1154,18 +1245,25 @@ bool BLERxView::parse_beacon_data(const uint8_t* data, uint8_t length, std::stri
        for (int i = 0; ((i < currentLength - 1) && (currentByte < length)); i++) {
            // parse the name of bluetooth device: 0x08->Shortened Local Name; 0x09->Complete Local Name
            if (currentType == 0x08 || currentType == 0x09) {
-                nameString += (char)data[currentByte];
+                tempName += (char)data[currentByte];
            }
            currentByte++;
        }
-    }

-    if (nameString.empty()) {
-        nameString = "None";
+        if (!tempName.empty()) {
+            nameString = tempName;
+            break;
+        }
    }

    informationString = "";

+    if (!informationString.empty()) {
+        // Option to change title of Hits Column.
+        // Setting to default for now.
+        columns.set(1, "Hits", 7);
+    }
+
    return true;
 }

@@ -71,7 +71,8 @@ typedef enum {
    RESERVED5 = 12,
    RESERVED6 = 13,
    RESERVED7 = 14,
-    RESERVED8 = 15
+    RESERVED8 = 15,
+    UNKNOWN = 16
 } ADV_PDU_TYPE;

 typedef enum {
@@ -84,9 +85,9 @@ typedef enum {
 struct BleRecentEntry {
    using Key = uint64_t;

-    static constexpr Key invalid_key = 0xFFFFFFFFFFFF;
+    static constexpr Key invalid_key = 0xFFFFFFFFFFFFF;

-    uint64_t macAddress;
+    uint64_t uniqueKey;
    int dbValue;
    BlePacketData packetData;
    std::string timestamp;
@@ -105,8 +106,8 @@ struct BleRecentEntry {
    }

    BleRecentEntry(
-        const uint64_t macAddress)
-        : macAddress{macAddress},
+        const uint64_t uniqueKey)
+        : uniqueKey{uniqueKey},
          dbValue{},
          packetData{},
          timestamp{},
@@ -122,7 +123,7 @@ struct BleRecentEntry {
    }

    Key key() const {
-        return macAddress;
+        return uniqueKey;
    }
 };

@@ -139,11 +140,11 @@ class BleRecentEntryDetailView : public View {
    void update_data();
    void focus() override;
    void paint(Painter&) override;
+    static BLETxPacket build_packet(BleRecentEntry entry_);

   private:
    NavigationView& nav_;
    BleRecentEntry entry_{};
-    BLETxPacket build_packet();
    void on_save_file(const std::string value, BLETxPacket packetToSave);
    bool saveFile(const std::filesystem::path& path, BLETxPacket packetToSave);
    std::string packetFileBuffer{};
@@ -227,6 +228,7 @@ class BLERxView : public View {
    void handle_filter_options(uint8_t index);
    bool updateEntry(const BlePacketData* packet, BleRecentEntry& entry, ADV_PDU_TYPE pdu_type);
    bool parse_beacon_data(const uint8_t* data, uint8_t length, std::string& nameString, std::string& informationString);
+    bool parse_tracking_beacon_data(const uint8_t* data, uint8_t length, std::string& nameString, std::string& informationString);

    NavigationView& nav_;

@@ -240,6 +242,7 @@ class BLERxView : public View {
    uint8_t sort_index{0};
    uint8_t filter_index{0};
    bool uniqueParsing = false;
+    bool duplicatePackets = false;
    std::string filter{};
    bool logging{false};
    bool serial_logging{false};
@@ -258,6 +261,8 @@ class BLERxView : public View {
            // disabled to always start without USB serial activated until we can make it non blocking if not connected
            // {"serial_log"sv, &serial_logging},
            {"name"sv, &name_enable},
+            {"unique_parsing"sv, &uniqueParsing},
+            {"duplicate_packets"sv, &duplicatePackets},
        }};

    std::string str_console = "";
@@ -267,7 +272,7 @@ class BLERxView : public View {
    bool auto_channel = false;

    int16_t timer_count{0};
-    int16_t timer_period{6};  // 100ms
+    int16_t timer_period{1};  // 25ms

    std::string filterBuffer{};
    std::string listFileBuffer{};
@@ -283,7 +288,7 @@ class BLERxView : public View {
    std::filesystem::path log_packets_path{blerx_dir / u"Logs/????.TXT"};
    std::filesystem::path packet_save_path{blerx_dir / u"Lists/????.csv"};

-    static constexpr auto header_height = 9 * 8;
+    static constexpr auto header_height = 12 * 8;
    static constexpr auto switch_button_height = 3 * 16;

    OptionsField options_channel{
@@ -323,7 +328,8 @@ class BLERxView : public View {
         {"Hits", 1},
         {"dB", 2},
         {"Time", 3},
-         {"Name", 4}}};
+         {"Name", 4},
+         {"Info", 5}}};

    Button button_filter{
        {11 * 8, 2 * 8, 7 * 8, 16},
@@ -334,7 +340,10 @@ class BLERxView : public View {
        7,
        {{"Data", 0},
         {"MAC", 1},
-         {"Unique", 2}}};
+         {"Name", 2},
+         {"Info", 3},
+         {"Vendor", 4},
+         {"Channel", 5}}};

    Checkbox check_log{
        {10 * 8, 4 * 8 + 2},
@@ -348,36 +357,45 @@ class BLERxView : public View {
        "Name",
        true};

-    Button button_find{
-        {0 * 8, 7 * 8 - 2, 4 * 8, 16},
-        "Find"};
-
-    Labels label_found{
-        {{5 * 8, 7 * 8 - 2}, "Found:", Theme::getInstance()->fg_light->foreground}};
-
-    Text text_found_count{
-        {11 * 8, 7 * 8 - 2, 20 * 8, 16},
-        "0/0"};
-
    Checkbox check_serial_log{
        {18 * 8 + 2, 4 * 8 + 2},
        7,
        "USB Log",
        true};

-    // Console console{
-    //     {0, 10 * 8, screen_height, screen_height-80}};
+    Checkbox check_unique{
+        {0 * 8 + 2, 7 * 8 + 2},
+        7,
+        "Unique",
+        true};
+
+    Checkbox check_duplicate_packets{
+        {10 * 8 + 2, 7 * 8 + 2},
+        7,
+        "Duplicate",
+        true};
+
+    Button button_find{
+        {0 * 8, 10 * 8 - 2, 4 * 8, 16},
+        "Find"};
+
+    Labels label_found{
+        {{5 * 8, 10 * 8 - 2}, "Found:", Theme::getInstance()->fg_light->foreground}};
+
+    Text text_found_count{
+        {11 * 8, 10 * 8 - 2, 20 * 8, 16},
+        "0/0"};

    Button button_clear_list{
-        {2 * 8, screen_height - (16 + 32), 7 * 8, 32},
+        {2 * 8, 320 - (16 + 32), 7 * 8, 32},
        "Clear"};

    Button button_save_list{
-        {11 * 8, screen_height - (16 + 32), 11 * 8, 32},
+        {11 * 8, 320 - (16 + 32), 11 * 8, 32},
        "Export CSV"};

    Button button_switch{
-        {screen_width - 6 * 8, screen_height - (16 + 32), 4 * 8, 32},
+        {240 - 6 * 8, 320 - (16 + 32), 4 * 8, 32},
        "Tx"};

    std::string str_log{""};
@@ -386,9 +404,9 @@ class BLERxView : public View {
    BleRecentEntries recent{};
    BleRecentEntries tempList{};

-    const RecentEntriesColumns columns{{
-        {"Name", 10},
-        {"Information", 13},
+    RecentEntriesColumns columns{{
+        {"Name", 17},
+        {"Hits", 7},
        {"dBm", 4},
    }};

@@ -35,6 +35,7 @@
 #include "rtc_time.hpp"
 #include "string_format.hpp"
 #include "file_path.hpp"
+#include "usb_serial_asyncmsg.hpp"

 using namespace portapack;
 using namespace modems;
@@ -123,6 +124,31 @@ static std::uint64_t get_freq_by_channel_number(uint8_t channel_number) {

 namespace ui {

+PKT_TYPE get_pkt_type_from_string(const std::string& type_str) {
+    if (type_str == "RAW") {
+        return PKT_TYPE_RAW;
+    } else if (type_str == "DISCOVERY") {
+        return PKT_TYPE_DISCOVERY;
+    } else if (type_str == "IBEACON") {
+        return PKT_TYPE_IBEACON;
+    } else if (type_str == "ADV_IND") {
+        return PKT_TYPE_ADV_IND;
+    } else if (type_str == "ADV_DIRECT_IND") {
+        return PKT_TYPE_ADV_DIRECT_IND;
+    } else if (type_str == "ADV_NONCONN_IND") {
+        return PKT_TYPE_ADV_NONCONN_IND;
+    } else if (type_str == "ADV_SCAN_IND") {
+        return PKT_TYPE_ADV_SCAN_IND;
+    } else if (type_str == "SCAN_REQ") {
+        return PKT_TYPE_SCAN_REQ;
+    } else if (type_str == "SCAN_RSP") {
+        return PKT_TYPE_SCAN_RSP;
+    } else if (type_str == "CONNECT_REQ") {
+        return PKT_TYPE_CONNECT_REQ;
+    }
+    return PKT_TYPE_INVALID_TYPE;
+}
+
 void BLETxView::focus() {
    button_open.focus();
 }
@@ -167,28 +193,11 @@ void BLETxView::toggle() {
    }
 }

-void BLETxView::start() {
-    baseband::run_image(portapack::spi_flash::image_tag_btle_tx);
-    transmitter_model.enable();
-
+void BLETxView::send_packet() {
    // Generate new random Mac Address.
+    transmitter_model.enable();
    generateRandomMacAddress(randomMac);

-    // If this is our first run, check file.
-    if (!is_active()) {
-        File data_file;
-
-        auto error = data_file.open(file_path);
-        if (error && !file_override) {
-            file_error();
-            check_loop.set_value(false);
-            return;
-        }
-
-        button_play.set_bitmap(&bitmap_stop);
-        is_running = true;
-    }
-
    char advertisementData[63] = {0};
    strcpy(advertisementData, packets[current_packet].advertisementData);

@@ -235,9 +244,28 @@ void BLETxView::start() {
        }
    }

-    // Setup next packet configuration.
-    progressbar.set_max(packets[current_packet].packet_count);
-    baseband::set_btletx(channel_number, random_mac ? randomMac : packets[current_packet].macAddress, advertisementData, pduType);
+    progressbar.set_value(packets[current_packet].packet_count - packet_counter);
+    text_packets_sent.set(to_string_dec_uint(packet_counter));
+
+    baseband::set_btletx(channel_number, random_mac ? randomMac : packets[current_packet].macAddress, advertisementData, packets[current_packet].pduType);
+
+    packetDone = false;
+}
+
+void BLETxView::start() {
+    if (file_path.empty()) {
+        file_error();
+        check_loop.set_value(false);
+        return;
+    }
+
+    baseband::run_image(portapack::spi_flash::image_tag_btle_tx);
+    transmitter_model.enable();
+
+    button_play.set_bitmap(&bitmap_stop);
+    is_running = true;
+
+    send_packet();
 }

 void BLETxView::stop() {
@@ -253,66 +281,67 @@ void BLETxView::stop() {
    is_running = false;
 }

-void BLETxView::reset() {
-    transmitter_model.disable();
-    baseband::shutdown();
-
-    start();
-}
-
 // called each 1/60th of second, so 6 = 100ms
 void BLETxView::on_timer() {
    if (++timer_count == timer_period) {
        timer_count = 0;

-        if (is_active()) {
-            // Reached end of current packet repeats.
-            if (packet_counter == 0) {
-                // Done sending all packets.
-                if (current_packet == (num_packets - 1)) {
-                    current_packet = 0;
-
-                    // If looping, restart from beginning.
-                    if (check_loop.value()) {
-                        update_current_packet(packets[current_packet], current_packet);
-                        reset();
-                    } else {
-                        stop();
-                    }
-                } else {
-                    current_packet++;
-                    update_current_packet(packets[current_packet], current_packet);
-                    reset();
-                }
-            } else {
-                reset();
-            }
-        }
-    }
-
-    if (++auto_channel_counter == auto_channel_period) {
-        auto_channel_counter = 0;
-
-        if (auto_channel) {
-            int min = 37;
-            int max = 39;
-
-            channel_number = min + std::rand() % (max - min + 1);
-
-            field_frequency.set_value(get_freq_by_channel_number(channel_number));
+        if (is_active() && packetDone) {
+            send_packet();
        }
    }
 }

-void BLETxView::on_tx_progress(const bool done) {
+void BLETxView::on_tx_progress(const bool done, uint32_t progress) {
    if (done) {
        if (is_active()) {
-            if ((packet_counter % 10) == 0) {
-                text_packets_sent.set(to_string_dec_uint(packet_counter));
-            }
+            transmitter_model.disable();
+            if (auto_channel) {
+                switch (advCount) {
+                    case 0:
+                        channel_number = 37;
+                        break;
+                    case 1:
+                        channel_number = 38;
+                        break;
+                    case 2:
+                        channel_number = 39;
+                        break;
+                }

-            packet_counter--;
-            progressbar.set_value(packets[current_packet].packet_count - packet_counter);
+                field_frequency.set_value(get_freq_by_channel_number(channel_number));
+
+                if (advCount == 3) {
+                    channel_number = 37;
+                    packet_counter--;
+                    packetDone = true;
+                    advCount = 0;
+                } else {
+                    send_packet();
+                    advCount++;
+                }
+            } else {
+                packet_counter--;
+                packetDone = true;
+            }
+        }
+
+        // Reached end of current packet repeats.
+        if (packet_counter == 0) {
+            // Done sending all packets.
+            if (current_packet == (num_packets - 1)) {
+                current_packet = 0;
+
+                // If looping, restart from beginning.
+                if (check_loop.value()) {
+                    update_current_packet(packets[current_packet], current_packet);
+                } else {
+                    stop();
+                }
+            } else {
+                current_packet++;
+                update_current_packet(packets[current_packet], current_packet);
+            }
        }
    }
 }
@@ -331,7 +360,6 @@ BLETxView::BLETxView(NavigationView& nav)
                  &label_speed,
                  &options_speed,
                  &options_channel,
-                  &options_adv_type,
                  &label_marked_data,
                  &marked_data_sequence,
                  &label_packet_index,
@@ -371,13 +399,8 @@ BLETxView::BLETxView(NavigationView& nav)
        timer_count = 0;
    };

-    options_adv_type.on_change = [this](size_t, int32_t i) {
-        pduType = (PKT_TYPE)i;
-    };
-
    options_speed.set_selected_index(0);
-    options_channel.set_selected_index(0);
-    options_adv_type.set_selected_index(0);
+    options_channel.set_selected_index(3);

    check_rand_mac.set_value(false);
    check_rand_mac.on_select = [this](Checkbox&, bool v) {
@@ -482,17 +505,25 @@ void BLETxView::on_file_changed(const fs::path& new_file_path) {
        do {
            readUntil(data_file, packets[num_packets].macAddress, mac_address_size_str, ' ');
            readUntil(data_file, packets[num_packets].advertisementData, max_packet_size_str, ' ');
+            readUntil(data_file, packets[num_packets].packetType, max_packet_type_str, ' ');
            readUntil(data_file, packets[num_packets].packetCount, max_packet_repeat_str, '\n');

            uint64_t macAddressSize = strlen(packets[num_packets].macAddress);
            uint64_t advertisementDataSize = strlen(packets[num_packets].advertisementData);
            uint64_t packetCountSize = strlen(packets[num_packets].packetCount);
+            uint64_t packetTypeSize = strlen(packets[num_packets].packetType);

            packets[num_packets].packet_count = stringToUint32(packets[num_packets].packetCount);
+            packets[num_packets].pduType = (PKT_TYPE)get_pkt_type_from_string(packets[num_packets].packetType);

            // Verify Data.
-            if ((macAddressSize == mac_address_size_str) && (advertisementDataSize < max_packet_size_str) && (packetCountSize < max_packet_repeat_str) &&
-                hasValidHexPairs(packets[num_packets].macAddress, macAddressSize / 2) && hasValidHexPairs(packets[num_packets].advertisementData, advertisementDataSize / 2) && (packets[num_packets].packet_count >= 1) && (packets[num_packets].packet_count < max_packet_repeat_count)) {
+            if ((macAddressSize == mac_address_size_str) &&
+                (advertisementDataSize < max_packet_size_str) &&
+                (packetCountSize < max_packet_repeat_str) &&
+                hasValidHexPairs(packets[num_packets].macAddress, macAddressSize / 2) &&
+                hasValidHexPairs(packets[num_packets].advertisementData, advertisementDataSize / 2) &&
+                (packets[num_packets].packet_count >= 1) && (packets[num_packets].packet_count < max_packet_repeat_count) &&
+                (packetTypeSize <= max_packet_type_str)) {
                text_filename.set(truncate(file_path.filename().string(), 12));

            } else {
@@ -510,6 +541,8 @@ void BLETxView::on_file_changed(const fs::path& new_file_path) {
        } while (num_packets < max_num_packets);

        update_current_packet(packets[0], 0);
+
+        data_file.close();
    }
 }

@@ -540,6 +573,8 @@ void BLETxView::update_current_packet(BLETxPacket packet, uint32_t currentIndex)

    text_mac_address.set(formattedMacAddress);

+    progressbar.set_max(packet.packet_count);
+
    packet_counter = packet.packet_count;
    current_packet = currentIndex;

@@ -550,7 +585,7 @@ void BLETxView::update_current_packet(BLETxPacket packet, uint32_t currentIndex)
        dataFile.write("\n", 1);
    }

-    dataFile.~File();
+    dataFile.close();

    auto result = FileWrapper::open(dataTempFilePath);

@@ -38,6 +38,8 @@
 #include "utility.hpp"
 #include "file_path.hpp"

+#include "ble_tx_app.hpp"
+
 #include "recent_entries.hpp"

 #include <string>
@@ -91,8 +93,9 @@ struct BLETxPacket {
    char macAddress[13];
    char advertisementData[63];
    char packetCount[11];
+    char packetType[17];
    uint32_t packet_count;
-    PKT_TYPE packetType;
+    PKT_TYPE pduType;
 };

 class BLETxView : public View {
@@ -109,8 +112,8 @@ class BLETxView : public View {
    bool is_active() const;
    void toggle();
    void start();
+    void send_packet();
    void stop();
-    void reset();
    void handle_replay_thread_done(const uint32_t return_code);
    void file_error();
    bool saveFile(const std::filesystem::path& path);
@@ -122,7 +125,7 @@ class BLETxView : public View {
    void on_data(uint32_t value, bool is_data);
    void on_file_changed(const std::filesystem::path& new_file_path);
    void on_save_file(const std::string value);
-    void on_tx_progress(const bool done);
+    void on_tx_progress(const bool done, uint32_t progress);
    void on_random_data_change(std::string value);
    void update_current_packet(BLETxPacket packet, uint32_t currentIndex);

@@ -156,6 +159,8 @@ class BLETxView : public View {
    uint32_t packet_counter{0};
    uint32_t num_packets{0};
    uint32_t current_packet{0};
+    uint8_t packetTxCount{0};
+    bool packetDone = false;
    bool random_mac = false;
    bool file_override = false;

@@ -170,17 +175,17 @@ class BLETxView : public View {
    std::vector<uint16_t> markedBytes{};
    CursorPos cursor_pos{};
    uint8_t marked_counter = 0;
+    uint8_t advCount = 0;

    static constexpr uint8_t mac_address_size_str{12};
    static constexpr uint8_t max_packet_size_str{62};
    static constexpr uint8_t max_packet_repeat_str{10};
+    static constexpr uint8_t max_packet_type_str{16};
    static constexpr uint32_t max_packet_repeat_count{UINT32_MAX};
    static constexpr uint32_t max_num_packets{32};

    BLETxPacket packets[max_num_packets];

-    PKT_TYPE pduType = {PKT_TYPE_DISCOVERY};
-
    static constexpr auto header_height = 10 * 16;
    static constexpr auto switch_button_height = 6 * 16;

@@ -216,7 +221,7 @@ class BLETxView : public View {
        true};

    ImageButton button_play{
-        {screen_width - 2 * 8, 2 * 16, 2 * 8, 1 * 16},
+        {28 * 8, 2 * 16, 2 * 8, 1 * 16},
        &bitmap_play,
        Theme::getInstance()->fg_green->foreground,
        Theme::getInstance()->fg_green->background};
@@ -227,11 +232,11 @@ class BLETxView : public View {
    OptionsField options_speed{
        {7 * 8, 6 * 8},
        3,
-        {{"1 ", 1},     // 16ms
-         {"2 ", 2},     // 32ms
-         {"3 ", 3},     // 48ms
-         {"4 ", 6},     // 100ms
-         {"5 ", 12}}};  // 200ms
+        {{"1 ", 2},     // 25ms
+         {"2 ", 4},     // 50ms
+         {"3 ", 6},     // 75ms
+         {"4 ", 8},     // 100ms
+         {"5 ", 12}}};  // 150ms

    OptionsField options_channel{
        {11 * 8, 6 * 8},
@@ -288,7 +293,7 @@ class BLETxView : public View {
        {{0 * 8, 9 * 16}, "Packet Data:", Theme::getInstance()->fg_light->foreground}};

    TextViewer dataEditView{
-        {0, 9 * 18, screen_width, screen_height - 80}};
+        {0, 9 * 18, 240, 240}};

    Button button_clear_marked{
        {1 * 8, 14 * 16, 13 * 8, 3 * 8},
@@ -320,7 +325,7 @@ class BLETxView : public View {
        Message::ID::TXProgress,
        [this](const Message* const p) {
            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
-            this->on_tx_progress(message.done);
+            this->on_tx_progress(message.done, message.progress);
        }};

    MessageHandlerRegistration message_handler_frame_sync{
@@ -247,8 +247,8 @@ APRSTableView::APRSTableView(NavigationView& nav, Rect parent_rec)

    details_view.hidden(true);

-    recent_entries_view.set_parent_rect({0, 0, screen_width, screen_width - 40});
-    details_view.set_parent_rect({0, 0, screen_width, screen_width - 40});
+    recent_entries_view.set_parent_rect({0, 0, screen_width, screen_height - 40});
+    details_view.set_parent_rect({0, 0, screen_width, screen_height - 40});

    recent_entries_view.on_select = [this](const APRSRecentEntry& entry) {
        this->on_show_detail(entry);
@@ -84,6 +84,7 @@ void SubGhzDView::focus() {
 SubGhzDView::SubGhzDView(NavigationView& nav)
    : nav_{nav} {
    add_children({&rssi,
+                  &channel,
                  &field_rf_amp,
                  &field_lna,
                  &field_vga,
@@ -129,6 +129,9 @@ class SubGhzDView : public View {
        {18 * 8, 0 * 16}};
    RSSI rssi{
        {21 * 8, 0, 6 * 8, 4}};
+    Channel channel{
+        {21 * 8, 5, 6 * 8, 4},
+    };
    RxFrequencyField field_frequency{
        {0 * 8, 0 * 16},
        nav_};
@@ -107,6 +107,7 @@ void WeatherView::focus() {
 WeatherView::WeatherView(NavigationView& nav)
    : nav_{nav} {
    add_children({&rssi,
+                  &channel,
                  &field_rf_amp,
                  &field_lna,
                  &field_vga,
@@ -147,6 +147,9 @@ class WeatherView : public View {
        {18 * 8, 0 * 16}};
    RSSI rssi{
        {21 * 8, 0, 6 * 8, 4}};
+    Channel channel{
+        {21 * 8, 5, 6 * 8, 4},
+    };

    AudioVolumeField field_volume{
        {screen_width - 2 * 8, 0 * 16}};
@@ -186,13 +186,14 @@ void set_nrf(const uint32_t baudrate, const uint32_t word_length, const uint32_t
    send_message(&message);
 }

-void set_fsk(const size_t deviation) {
+void set_fsk(const uint8_t samplesPerSymbol, const uint32_t syncWord, const uint8_t syncWordLength, const uint32_t preamble, const uint8_t preambleLength, uint16_t numDataBytes) {
    const FSKRxConfigureMessage message{
-        taps_200k_decim_0,
-        taps_16k0_decim_1,
-        taps_11k0_channel,
-        2,
-        deviation};
+        samplesPerSymbol,
+        syncWord,
+        syncWordLength,
+        preamble,
+        preambleLength,
+        numDataBytes};

    send_message(&message);
 }
@@ -80,7 +80,7 @@ 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);
 void kill_afsk();
 void set_afsk(const uint32_t baudrate, const uint32_t word_length, const uint32_t trigger_value, const bool trigger_word);
-void set_fsk(const size_t deviation);
+void set_fsk(const uint32_t samplesPerSymbol, const uint32_t syncWord, const uint8_t syncWordLength, const uint32_t preamble, const uint8_t preambleLength, uint16_t numDataBytes);
 void set_aprs(const uint32_t baudrate);

 void set_btlerx(uint8_t channel_number);
@@ -3689,44 +3689,6 @@ static constexpr Bitmap bitmap_icon_sonde{
    {16, 16},
    bitmap_icon_sonde_data};

-static constexpr uint8_t bitmap_icon_soundboard_data[] = {
-    0xF0,
-    0x0F,
-    0x1C,
-    0x18,
-    0x17,
-    0x38,
-    0x15,
-    0x78,
-    0x15,
-    0xF8,
-    0x15,
-    0x82,
-    0x15,
-    0x8B,
-    0xD5,
-    0x83,
-    0xD5,
-    0xBB,
-    0xD5,
-    0x83,
-    0x15,
-    0x8B,
-    0x15,
-    0x92,
-    0x15,
-    0xA0,
-    0x17,
-    0x80,
-    0x1C,
-    0x80,
-    0xF0,
-    0xFF,
-};
-static constexpr Bitmap bitmap_icon_soundboard{
-    {16, 16},
-    bitmap_icon_soundboard_data};
-
 static constexpr uint8_t bitmap_icon_speaker_data[] = {
    0x00,
    0x00,
@@ -0,0 +1,55 @@
+/*
+ * ------------------------------------------------------------
+ * |  Made by RocketGod                                       |
+ * |  Find me at https://betaskynet.com                       |
+ * |  Argh matey!                                             |
+ * ------------------------------------------------------------
+ */
+
+#include "ui.hpp"
+#include "ui_battleship.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::battleship {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<BattleshipView>();
+}
+}  // namespace ui::external_app::battleship
+
+extern "C" {
+
+__attribute__((section(".external_app.app_battleship.application_information"), used)) application_information_t _application_information_battleship = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::battleship::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Battleship",
+    /*.bitmap_data = */ {
+        // Pirate galleon - 16x16
+        0x80, 0x00,  // ........#.......
+        0x80, 0x00,  // ........#.......
+        0x80, 0x00,  // ........#.......
+        0xC0, 0x01,  // .......###......
+        0xE0, 0x03,  // ......#####.....
+        0xF0, 0x07,  // .....#######....
+        0xF8, 0x0F,  // ....#########...
+        0xFC, 0x1F,  // ...###########..
+        0xFE, 0x3F,  // ..#############.
+        0x00, 0x01,  // .......#........
+        0x00, 0x01,  // .......#........
+        0x00, 0x01,  // .......#........
+        0xFC, 0x3F,  // ..############..
+        0xFE, 0x7F,  // .##############.
+        0xFF, 0xFF,  // ################
+        0xFC, 0x3F,  // ..############..
+    },
+    /*.icon_color = */ ui::Color::blue().v,
+    /*.menu_location = */ app_location_t::GAMES,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = */ {'P', 'P', 'O', '2'},  // Use POCSAG2 baseband (larger than FSKTX)
+    /*.m4_app_offset = */ 0x00000000,         // will be filled at compile time
+};
+}
@@ -0,0 +1,250 @@
+/*
+ * ------------------------------------------------------------
+ * |  Made by RocketGod                                       |
+ * |  Find me at https://betaskynet.com                       |
+ * |  Argh matey!                                             |
+ * ------------------------------------------------------------
+ */
+
+#ifndef __UI_BATTLESHIP_H__
+#define __UI_BATTLESHIP_H__
+
+#include "ui.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_transmitter.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "audio.hpp"
+#include "message.hpp"
+#include "pocsag.hpp"
+
+#include <array>
+
+namespace ui::external_app::battleship {
+
+constexpr uint8_t GRID_SIZE = 10;
+constexpr uint8_t CELL_SIZE = 24;
+constexpr uint8_t GRID_OFFSET_X = 0;
+constexpr uint8_t GRID_OFFSET_Y = 32;
+
+enum class ShipType : uint8_t {
+    CARRIER = 5,
+    BATTLESHIP = 4,
+    CRUISER = 3,
+    SUBMARINE = 3,
+    DESTROYER = 2
+};
+
+enum class GameState : uint8_t {
+    MENU,
+    PLACING_SHIPS,
+    WAITING_FOR_OPPONENT,
+    MY_TURN,
+    OPPONENT_TURN,
+    GAME_OVER
+};
+
+enum class CellState : uint8_t {
+    EMPTY,
+    SHIP,
+    HIT,
+    MISS,
+    SUNK
+};
+
+enum class MessageType : uint8_t {
+    READY,
+    SHOT,
+    HIT,
+    MISS,
+    SUNK,
+    WIN
+};
+
+struct Ship {
+    ShipType type;
+    uint8_t x;
+    uint8_t y;
+    bool horizontal;
+    uint8_t hits;
+    bool placed;
+
+    uint8_t size() const {
+        return static_cast<uint8_t>(type);
+    }
+
+    bool is_sunk() const {
+        return hits >= size();
+    }
+};
+
+struct GameMessage {
+    MessageType type;
+    uint8_t x;
+    uint8_t y;
+};
+
+class BattleshipView : public View {
+   public:
+    BattleshipView(NavigationView& nav);
+    ~BattleshipView();
+
+    void focus() override;
+    void paint(Painter& painter) override;
+    bool on_touch(const TouchEvent event) override;
+    bool on_encoder(const EncoderEvent delta) override;
+    bool on_key(const KeyEvent key) override;
+
+    std::string title() const override { return "Battleship"; }
+
+   private:
+    NavigationView& nav_;
+
+    RxRadioState rx_radio_state_{
+        433920000 /* frequency */,
+        1750000 /* bandwidth */,
+        2280000 /* sampling rate */
+    };
+
+    TxRadioState tx_radio_state_{
+        433920000 /* frequency */,
+        1750000 /* bandwidth */,
+        2280000 /* sampling rate */
+    };
+
+    // Settings
+    bool sound_enabled{true};
+    bool rf_amp_enabled{false};
+    uint8_t lna_gain{24};
+    uint8_t vga_gain{24};
+    uint8_t tx_gain{35};
+
+    app_settings::SettingsManager settings_{
+        "battleship",
+        app_settings::Mode::RX_TX,
+        {{"rx_freq"sv, &rx_frequency},
+         {"tx_freq"sv, &tx_frequency},
+         {"rf_amp"sv, &rf_amp_enabled}}};
+
+    GameState game_state{GameState::MENU};
+    bool is_red_team{false};
+    bool opponent_ready{false};
+    uint8_t wins{0};
+    uint8_t losses{0};
+
+    std::array<std::array<CellState, GRID_SIZE>, GRID_SIZE> my_grid{};
+    std::array<std::array<CellState, GRID_SIZE>, GRID_SIZE> enemy_grid{};
+
+    std::string current_status{"Choose your team!"};
+    std::string current_score{"W:0 L:0"};
+
+    std::array<Ship, 5> my_ships{};
+    uint8_t current_ship_index{0};
+    bool placing_horizontal{true};
+    uint8_t ships_remaining{5};
+    uint8_t enemy_ships_remaining{5};
+
+    uint8_t cursor_x{0};
+    uint8_t cursor_y{0};
+    uint8_t target_x{0};
+    uint8_t target_y{0};
+    bool touch_enabled{true};
+
+    uint32_t tx_frequency{433920000};
+    uint32_t rx_frequency{433920000};
+    bool is_transmitting{false};
+
+    // POCSAG decoding state
+    pocsag::EccContainer ecc{};
+    pocsag::POCSAGState pocsag_state{&ecc};
+    uint32_t last_address{0};
+
+    // UI Elements - Menu/Settings Screen
+    Text text_title{{60, 2, 120, 24}, "BATTLESHIP"};
+    Text text_subtitle{{40, 20, 160, 16}, "Naval Combat Game"};
+
+    Rectangle rect_radio_settings{{12, 40, 216, 118}, Color::dark_grey()};
+    Text label_radio{{17, 45, 100, 16}, "RADIO SETUP"};
+    ButtonWithEncoder button_frequency{{17, 65, 11 * 8, 20}, ""};
+
+    // Radio controls
+    Text label_rf_amp{{17, 90, 35, 16}, "AMP:"};
+    Checkbox checkbox_rf_amp{{55, 90}, 3, "", false};
+
+    Text label_lna{{17, 118, 30, 16}, "LNA:"};
+    NumberField field_lna{{50, 118}, 2, {0, 40}, 8, ' '};
+
+    Text label_vga{{90, 118, 30, 16}, "VGA:"};
+    NumberField field_vga{{125, 118}, 2, {0, 62}, 8, ' '};
+
+    Text label_tx_gain{{155, 118, 25, 16}, "TX:"};
+    NumberField field_tx_gain{{185, 118}, 2, {0, 47}, 8, ' '};
+
+    Rectangle rect_audio_settings{{12, 164, 216, 45}, Color::dark_grey()};
+    Text label_audio{{17, 169, 80, 16}, "AUDIO"};
+    Checkbox checkbox_sound{{17, 187}, 8, "Sound On", true};
+    Text label_volume{{110, 187, 50, 16}, "Volume:"};
+    AudioVolumeField field_volume{{165, 187}};
+
+    Rectangle rect_team_selection{{12, 217, 216, 75}, Color::dark_grey()};
+    Text label_team{{17, 222, 110, 16}, "SELECT TEAM"};
+    Button button_red_team{{25, 242, 85, 45}, "RED\nTEAM"};
+    Button button_blue_team{{130, 242, 85, 45}, "BLUE\nTEAM"};
+
+    // In-game UI elements
+    RSSI rssi{{21 * 8, 0, 6 * 8, 4}};
+    Text text_status{{10, 16, 220, 16}, ""};
+    Text text_score{{170, 16, 60, 16}, ""};
+    Button button_rotate{{10, 265, 65, 32}, "Rotate"};
+    Button button_place{{82, 265, 65, 32}, "Place"};
+    Button button_fire{{82, 265, 65, 32}, "Fire!"};
+    Button button_menu{{155, 265, 65, 32}, "Menu"};
+
+    // Methods
+    void init_game();
+    void reset_game();
+    void start_team(bool red);
+    void setup_ships();
+    void draw_menu_screen(Painter& painter);
+    void draw_grid(Painter& painter, uint8_t grid_x, uint8_t grid_y, const std::array<std::array<CellState, GRID_SIZE>, GRID_SIZE>& grid, bool show_ships, bool is_offense_grid = false);
+    void draw_cell(Painter& painter, uint8_t cell_x, uint8_t cell_y, CellState state, bool show_ships, bool is_offense_grid, bool is_cursor);
+    void draw_ship_preview(Painter& painter);
+    void place_ship();
+    bool can_place_ship(uint8_t x, uint8_t y, uint8_t size, bool horizontal);
+    void fire_at_position();
+    void process_shot(uint8_t x, uint8_t y);
+    void update_score();
+    bool is_cursor_at(uint8_t x, uint8_t y, bool is_offense_grid);
+
+    void send_message(const GameMessage& msg);
+    void process_message(const std::string& message);
+    bool parse_coords(const std::string& coords, uint8_t& x, uint8_t& y);
+    void mark_ship_sunk(uint8_t x, uint8_t y, std::array<std::array<CellState, GRID_SIZE>, GRID_SIZE>& grid);
+
+    void configure_radio_tx();
+    void configure_radio_rx();
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::POCSAGPacket,
+        [this](Message* const p) {
+            const auto message = static_cast<const POCSAGPacketMessage*>(p);
+            on_pocsag_packet(message);
+        }};
+
+    MessageHandlerRegistration message_handler_tx_progress{
+        Message::ID::TXProgress,
+        [this](const Message* const p) {
+            const auto message = static_cast<const TXProgressMessage*>(p);
+            on_tx_progress(message->progress, message->done);
+        }};
+
+    void on_pocsag_packet(const POCSAGPacketMessage* message);
+    void on_tx_progress(const uint32_t progress, const bool done);
+};
+
+}  // namespace ui::external_app::battleship
+
+#endif
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2024 EPIRB Decoder Implementation
+ *
+ * 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_epirb_rx.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::epirb_rx {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<EPIRBAppView>();
+}
+}  // namespace ui::external_app::epirb_rx
+
+extern "C" {
+
+__attribute__((section(".external_app.app_epirb_rx.application_information"), used)) application_information_t _application_information_epirb_rx = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::epirb_rx::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "EPIRB RX",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x7C,
+        0x3E,
+        0xFE,
+        0x7F,
+        0xFF,
+        0xFF,
+        0xF7,
+        0xEF,
+        0xE3,
+        0xC7,
+        0xE3,
+        0xC7,
+        0xE3,
+        0xC7,
+        0xE3,
+        0xC7,
+        0xF7,
+        0xEF,
+        0xFF,
+        0xFF,
+        0xFE,
+        0x7F,
+        0x7C,
+        0x3E,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::red().v,
+    /*.menu_location = */ app_location_t::RX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_epirb_rx */ {'P', 'E', 'P', 'I'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
@@ -0,0 +1,515 @@
+/*
+ * Copyright (C) 2024 EPIRB Decoder Implementation
+ *
+ * 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 "baseband_api.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "file_path.hpp"
+
+#include "ui_epirb_rx.hpp"
+
+using namespace portapack;
+
+#include "rtc_time.hpp"
+#include "string_format.hpp"
+
+#include "message.hpp"
+
+namespace ui::external_app::epirb_rx {
+
+EPIRBBeacon EPIRBDecoder::decode_packet(const baseband::Packet& packet) {
+    EPIRBBeacon beacon;
+
+    if (packet.size() < 112) {
+        return beacon;  // Invalid packet
+    }
+
+    // Convert packet bits to byte array for easier processing
+    std::array<uint8_t, 16> data{};
+    for (size_t i = 0; i < std::min(packet.size() / 8, data.size()); i++) {
+        uint8_t byte_val = 0;
+        for (int bit = 0; bit < 8 && (i * 8 + bit) < packet.size(); bit++) {
+            if (packet[i * 8 + bit]) {
+                byte_val |= (1 << (7 - bit));
+            }
+        }
+        data[i] = byte_val;
+    }
+
+    // Extract beacon ID (bits 26-85, 15 hex digits)
+    beacon.beacon_id = 0;
+    for (int i = 3; i < 11; i++) {
+        beacon.beacon_id = (beacon.beacon_id << 8) | data[i];
+    }
+
+    // Extract beacon type (bits 86-88)
+    uint8_t type_bits = (data[10] >> 5) & 0x07;
+    beacon.beacon_type = decode_beacon_type(type_bits);
+
+    // Extract emergency type (bits 91-94 for some beacon types)
+    uint8_t emergency_bits = (data[11] >> 4) & 0x0F;
+    beacon.emergency_type = decode_emergency_type(emergency_bits);
+
+    // Extract location if encoded (depends on beacon type and protocol)
+    beacon.location = decode_location(data);
+
+    // Extract country code (bits 1-10)
+    beacon.country_code = decode_country_code(data);
+
+    // Set timestamp
+    rtc::RTC datetime;
+    rtcGetTime(&RTCD1, &datetime);
+    beacon.timestamp = datetime;
+
+    return beacon;
+}
+
+EPIRBLocation EPIRBDecoder::decode_location(const std::array<uint8_t, 16>& data) {
+    // EPIRB location encoding varies by protocol version
+    // This is a simplified decoder for the most common format
+
+    // Check for location data presence (bit patterns vary)
+    if ((data[12] & 0x80) == 0) {
+        return EPIRBLocation();  // No location data
+    }
+
+    // Extract latitude (simplified - actual encoding is more complex)
+    int32_t lat_raw = ((data[12] & 0x7F) << 10) | (data[13] << 2) | ((data[14] >> 6) & 0x03);
+    if (lat_raw & 0x10000) lat_raw |= 0xFFFE0000;  // Sign extend
+    float latitude = lat_raw * (180.0f / 131072.0f);
+
+    // Extract longitude (simplified - actual encoding is more complex)
+    int32_t lon_raw = ((data[14] & 0x3F) << 12) | (data[15] << 4) | ((data[0] >> 4) & 0x0F);
+    if (lon_raw & 0x20000) lon_raw |= 0xFFFC0000;  // Sign extend
+    float longitude = lon_raw * (360.0f / 262144.0f);
+
+    // Validate coordinates
+    if (latitude < -90.0f || latitude > 90.0f || longitude < -180.0f || longitude > 180.0f) {
+        return EPIRBLocation();  // Invalid coordinates
+    }
+
+    return EPIRBLocation(latitude, longitude);
+}
+
+BeaconType EPIRBDecoder::decode_beacon_type(uint8_t type_bits) {
+    switch (type_bits) {
+        case 0:
+            return BeaconType::OrbitingLocationBeacon;
+        case 1:
+            return BeaconType::PersonalLocatorBeacon;
+        case 2:
+            return BeaconType::EmergencyLocatorTransmitter;
+        case 3:
+            return BeaconType::SerialELT;
+        case 4:
+            return BeaconType::NationalELT;
+        default:
+            return BeaconType::Other;
+    }
+}
+
+EmergencyType EPIRBDecoder::decode_emergency_type(uint8_t emergency_bits) {
+    switch (emergency_bits) {
+        case 0:
+            return EmergencyType::Fire;
+        case 1:
+            return EmergencyType::Flooding;
+        case 2:
+            return EmergencyType::Collision;
+        case 3:
+            return EmergencyType::Grounding;
+        case 4:
+            return EmergencyType::Sinking;
+        case 5:
+            return EmergencyType::Disabled;
+        case 6:
+            return EmergencyType::Abandoning;
+        case 7:
+            return EmergencyType::Piracy;
+        case 8:
+            return EmergencyType::Man_Overboard;
+        default:
+            return EmergencyType::Other;
+    }
+}
+
+uint32_t EPIRBDecoder::decode_country_code(const std::array<uint8_t, 16>& data) {
+    // Country code is in bits 1-10 (ITU country code)
+    return ((data[0] & 0x03) << 8) | data[1];
+}
+
+std::string EPIRBDecoder::decode_vessel_name(const std::array<uint8_t, 16>& /* data */) {
+    // Vessel name extraction depends on beacon type and protocol
+    // This is a placeholder - actual implementation would be more complex
+    return "";
+}
+
+void EPIRBLogger::on_packet(const EPIRBBeacon& beacon) {
+    std::string entry = "EPIRB," +
+                        to_string_dec_uint(beacon.beacon_id, 15, '0') + "," +
+                        to_string_dec_uint(static_cast<uint8_t>(beacon.beacon_type)) + "," +
+                        to_string_dec_uint(static_cast<uint8_t>(beacon.emergency_type)) + ",";
+
+    if (beacon.location.valid) {
+        entry += to_string_decimal(beacon.location.latitude, 6) + "," +
+                 to_string_decimal(beacon.location.longitude, 6);
+    } else {
+        entry += ",";
+    }
+
+    entry += "," + to_string_dec_uint(beacon.country_code) + "\n";
+
+    log_file.write_entry(beacon.timestamp, entry);
+}
+
+std::string format_beacon_type(BeaconType type) {
+    switch (type) {
+        case BeaconType::OrbitingLocationBeacon:
+            return "OLB";
+        case BeaconType::PersonalLocatorBeacon:
+            return "PLB";
+        case BeaconType::EmergencyLocatorTransmitter:
+            return "ELT";
+        case BeaconType::SerialELT:
+            return "S-ELT";
+        case BeaconType::NationalELT:
+            return "N-ELT";
+        default:
+            return "Other";
+    }
+}
+
+std::string format_emergency_type(EmergencyType type) {
+    switch (type) {
+        case EmergencyType::Fire:
+            return "Fire";
+        case EmergencyType::Flooding:
+            return "Flooding";
+        case EmergencyType::Collision:
+            return "Collision";
+        case EmergencyType::Grounding:
+            return "Grounding";
+        case EmergencyType::Sinking:
+            return "Sinking";
+        case EmergencyType::Disabled:
+            return "Disabled";
+        case EmergencyType::Abandoning:
+            return "Abandoning";
+        case EmergencyType::Piracy:
+            return "Piracy";
+        case EmergencyType::Man_Overboard:
+            return "MOB";
+        default:
+            return "Other";
+    }
+}
+
+EPIRBBeaconDetailView::EPIRBBeaconDetailView(ui::NavigationView& nav) {
+    add_children({&button_done,
+                  &button_see_map});
+
+    button_done.on_select = [this](Button&) {
+        if (on_close) on_close();
+    };
+
+    button_see_map.on_select = [this, &nav](Button&) {
+        if (beacon_.location.valid) {
+            nav.push<GeoMapView>(
+                to_string_hex(beacon_.beacon_id, 8),  // tag as string
+                0,                                    // altitude
+                GeoPos::alt_unit::METERS,
+                GeoPos::spd_unit::NONE,
+                beacon_.location.latitude,
+                beacon_.location.longitude,
+                0,  // angle
+                [this]() {
+                    if (on_close) on_close();
+                });
+        }
+    };
+}
+
+void EPIRBBeaconDetailView::set_beacon(const EPIRBBeacon& beacon) {
+    beacon_ = beacon;
+    set_dirty();
+}
+
+void EPIRBBeaconDetailView::focus() {
+    button_see_map.focus();
+}
+
+void EPIRBBeaconDetailView::paint(ui::Painter& painter) {
+    View::paint(painter);
+
+    const auto rect = screen_rect();
+    const auto s = style();
+
+    auto draw_cursor = rect.location();
+    draw_cursor += {8, 8};
+
+    draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                             "Beacon ID", to_string_hex(beacon_.beacon_id, 15))
+                      .location();
+
+    draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                             "Type", format_beacon_type(beacon_.beacon_type))
+                      .location();
+
+    draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                             "Emergency", format_emergency_type(beacon_.emergency_type))
+                      .location();
+
+    if (beacon_.location.valid) {
+        draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                                 "Latitude", to_string_decimal(beacon_.location.latitude, 6) + "°")
+                          .location();
+
+        draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                                 "Longitude", to_string_decimal(beacon_.location.longitude, 6) + "°")
+                          .location();
+    } else {
+        draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                                 "Location", "Unknown")
+                          .location();
+    }
+
+    draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                             "Country", to_string_dec_uint(beacon_.country_code))
+                      .location();
+
+    draw_cursor = draw_field(painter, {draw_cursor, {200, 16}}, s,
+                             "Time", to_string_datetime(beacon_.timestamp, HMS))
+                      .location();
+}
+
+ui::Rect EPIRBBeaconDetailView::draw_field(
+    ui::Painter& painter,
+    const ui::Rect& draw_rect,
+    const ui::Style& style,
+    const std::string& label,
+    const std::string& value) {
+    const auto label_width = 8 * 8;
+
+    painter.draw_string({draw_rect.location()}, style, label + ":");
+    painter.draw_string({draw_rect.location() + ui::Point{label_width, 0}}, style, value);
+
+    return {draw_rect.location() + ui::Point{0, draw_rect.height()}, draw_rect.size()};
+}
+
+EPIRBAppView::EPIRBAppView(ui::NavigationView& nav)
+    : nav_(nav) {
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+
+    add_children({&label_frequency,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &rssi,
+                  &field_volume,
+                  &channel,
+                  &label_status,
+                  &label_beacons_count,
+                  &label_latest,
+                  &text_latest_info,
+                  &console,
+                  &button_map,
+                  &button_clear,
+                  &button_log});
+
+    button_map.on_select = [this](Button&) {
+        this->on_show_map();
+    };
+
+    button_clear.on_select = [this](Button&) {
+        this->on_clear_beacons();
+    };
+
+    button_log.on_select = [this](Button&) {
+        this->on_toggle_log();
+    };
+
+    signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
+        this->on_tick_second();
+    };
+
+    // Configure receiver for 406.028 MHz EPIRB frequency
+    receiver_model.set_target_frequency(406028000);
+    receiver_model.set_rf_amp(true);
+    receiver_model.set_lna(32);
+    receiver_model.set_vga(32);
+    receiver_model.set_sampling_rate(2457600);
+    receiver_model.enable();
+
+    logger = std::make_unique<EPIRBLogger>();
+    if (logger) {
+        logger->append(logs_dir / "epirb_rx.txt");
+    }
+}
+
+EPIRBAppView::~EPIRBAppView() {
+    rtc_time::signal_tick_second -= signal_token_tick_second;
+
+    receiver_model.disable();
+    baseband::shutdown();
+}
+
+void EPIRBAppView::set_parent_rect(const ui::Rect new_parent_rect) {
+    View::set_parent_rect(new_parent_rect);
+
+    const auto console_rect = ui::Rect{
+        new_parent_rect.left(),
+        new_parent_rect.top() + header_height,
+        new_parent_rect.width(),
+        new_parent_rect.height() - header_height - 32};
+    console.set_parent_rect(console_rect);
+}
+
+void EPIRBAppView::paint(ui::Painter& /* painter */) {
+    // Custom painting if needed
+}
+
+void EPIRBAppView::focus() {
+    field_rf_amp.focus();
+}
+
+void EPIRBAppView::on_packet(const baseband::Packet& packet) {
+    // Decode the EPIRB packet
+    auto beacon = EPIRBDecoder::decode_packet(packet);
+
+    if (beacon.beacon_id != 0) {  // Valid beacon decoded
+        on_beacon_decoded(beacon);
+    }
+}
+
+void EPIRBAppView::on_beacon_decoded(const EPIRBBeacon& beacon) {
+    beacons_received++;
+    recent_beacons.push_back(beacon);
+
+    // Keep only last 50 beacons
+    if (recent_beacons.size() > 50) {
+        recent_beacons.erase(recent_beacons.begin());
+    }
+
+    // Update display
+    update_display();
+
+    // Log the beacon
+    if (logger) {
+        logger->on_packet(beacon);
+    }
+
+    // Display in console with full details
+    std::string beacon_info = format_beacon_summary(beacon);
+    if (beacon.emergency_type != EmergencyType::Other) {
+        beacon_info += " [" + format_emergency_type(beacon.emergency_type) + "]";
+    }
+    console.write(beacon_info + "\n");
+}
+
+void EPIRBAppView::on_show_map() {
+    if (!recent_beacons.empty()) {
+        // Find latest beacon with valid location
+        for (auto it = recent_beacons.rbegin(); it != recent_beacons.rend(); ++it) {
+            if (it->location.valid) {
+                // Create a GeoMapView with all beacon locations
+                auto map_view = nav_.push<ui::GeoMapView>(
+                    "EPIRB",  // tag
+                    0,        // altitude
+                    ui::GeoPos::alt_unit::METERS,
+                    ui::GeoPos::spd_unit::NONE,
+                    it->location.latitude,
+                    it->location.longitude,
+                    0  // angle
+                );
+
+                // Add all beacons with valid locations as markers
+                for (const auto& beacon : recent_beacons) {
+                    if (beacon.location.valid) {
+                        ui::GeoMarker marker;
+                        marker.lat = beacon.location.latitude;
+                        marker.lon = beacon.location.longitude;
+                        marker.angle = 0;
+                        marker.tag = to_string_hex(beacon.beacon_id, 8) + " " +
+                                     format_beacon_type(beacon.beacon_type);
+                        map_view->store_marker(marker);
+                    }
+                }
+                return;
+            }
+        }
+    }
+
+    // No valid location found
+    nav_.display_modal("No Location", "No beacons with valid\nlocation data found.");
+}
+
+void EPIRBAppView::on_clear_beacons() {
+    recent_beacons.clear();
+    beacons_received = 0;
+    console.clear(true);
+    update_display();
+}
+
+void EPIRBAppView::on_toggle_log() {
+    // Toggle logging functionality
+    if (logger) {
+        logger.reset();
+        button_log.set_text("Log");
+    } else {
+        logger = std::make_unique<EPIRBLogger>();
+        logger->append("epirb_rx.txt");
+        button_log.set_text("Stop");
+    }
+}
+
+void EPIRBAppView::on_tick_second() {
+    // Update status display every second
+    rtc::RTC datetime;
+    rtcGetTime(&RTCD1, &datetime);
+
+    label_status.set("Listening... " + to_string_datetime(datetime, HM));
+}
+
+void EPIRBAppView::update_display() {
+    label_beacons_count.set("Beacons: " + to_string_dec_uint(beacons_received));
+
+    if (!recent_beacons.empty()) {
+        const auto& latest = recent_beacons.back();
+        text_latest_info.set(format_beacon_summary(latest));
+    }
+}
+
+std::string EPIRBAppView::format_beacon_summary(const EPIRBBeacon& beacon) {
+    std::string summary = to_string_hex(beacon.beacon_id, 8) + " " +
+                          format_beacon_type(beacon.beacon_type);
+
+    if (beacon.location.valid) {
+        summary += " " + format_location(beacon.location);
+    }
+
+    return summary;
+}
+
+std::string EPIRBAppView::format_location(const EPIRBLocation& location) {
+    return to_string_decimal(location.latitude, 4) + "°," +
+           to_string_decimal(location.longitude, 4) + "°";
+}
+
+}  // namespace ui::external_app::epirb_rx
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2024 EPIRB Decoder Implementation
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __UI_EPIRB_RX_H__
+#define __UI_EPIRB_RX_H__
+
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "ui_widget.hpp"
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_geomap.hpp"
+
+#include "event_m0.hpp"
+#include "signal.hpp"
+#include "message.hpp"
+#include "log_file.hpp"
+
+#include "baseband_packet.hpp"
+
+/* #include <cstdint>
+#include <cstddef>
+#include <string>
+#include <array> */
+
+namespace ui::external_app::epirb_rx {
+
+// EPIRB 406 MHz beacon types
+enum class BeaconType : uint8_t {
+    OrbitingLocationBeacon = 0,
+    PersonalLocatorBeacon = 1,
+    EmergencyLocatorTransmitter = 2,
+    SerialELT = 3,
+    NationalELT = 4,
+    Other = 15
+};
+
+// EPIRB distress and emergency types
+enum class EmergencyType : uint8_t {
+    Fire = 0,
+    Flooding = 1,
+    Collision = 2,
+    Grounding = 3,
+    Sinking = 4,
+    Disabled = 5,
+    Abandoning = 6,
+    Piracy = 7,
+    Man_Overboard = 8,
+    Other = 15
+};
+
+struct EPIRBLocation {
+    float latitude;   // degrees, -90 to +90
+    float longitude;  // degrees, -180 to +180
+    bool valid;
+
+    EPIRBLocation()
+        : latitude(0.0f), longitude(0.0f), valid(false) {}
+    EPIRBLocation(float lat, float lon)
+        : latitude(lat), longitude(lon), valid(true) {}
+};
+
+struct EPIRBBeacon {
+    uint32_t beacon_id;
+    BeaconType beacon_type;
+    EmergencyType emergency_type;
+    EPIRBLocation location;
+    uint32_t country_code;
+    std::string vessel_name;
+    rtc::RTC timestamp;
+    uint32_t sequence_number;
+
+    EPIRBBeacon()
+        : beacon_id(0), beacon_type(BeaconType::Other), emergency_type(EmergencyType::Other), location(), country_code(0), vessel_name(), timestamp(), sequence_number(0) {}
+};
+
+class EPIRBDecoder {
+   public:
+    static EPIRBBeacon decode_packet(const baseband::Packet& packet);
+
+   private:
+    static EPIRBLocation decode_location(const std::array<uint8_t, 16>& data);
+    static BeaconType decode_beacon_type(uint8_t type_bits);
+    static EmergencyType decode_emergency_type(uint8_t emergency_bits);
+    static uint32_t decode_country_code(const std::array<uint8_t, 16>& data);
+    static std::string decode_vessel_name(const std::array<uint8_t, 16>& data);
+};
+
+class EPIRBLogger {
+   public:
+    Optional<File::Error> append(const std::filesystem::path& filename) {
+        return log_file.append(filename);
+    }
+
+    void on_packet(const EPIRBBeacon& beacon);
+
+   private:
+    LogFile log_file{};
+};
+
+// Forward declarations of formatting functions
+std::string format_beacon_type(BeaconType type);
+std::string format_emergency_type(EmergencyType type);
+
+class EPIRBBeaconDetailView : public ui::View {
+   public:
+    std::function<void(void)> on_close{};
+
+    EPIRBBeaconDetailView(ui::NavigationView& nav);
+    EPIRBBeaconDetailView(const EPIRBBeaconDetailView&) = delete;
+    EPIRBBeaconDetailView& operator=(const EPIRBBeaconDetailView&) = delete;
+
+    void set_beacon(const EPIRBBeacon& beacon);
+    const EPIRBBeacon& beacon() const { return beacon_; }
+
+    void focus() override;
+    void paint(ui::Painter&) override;
+
+    ui::GeoMapView* get_geomap_view() { return geomap_view; }
+
+   private:
+    EPIRBBeacon beacon_{};
+
+    ui::Button button_done{
+        {125, 224, 96, 24},
+        "Done"};
+    ui::Button button_see_map{
+        {19, 224, 96, 24},
+        "See on map"};
+
+    ui::GeoMapView* geomap_view{nullptr};
+
+    ui::Rect draw_field(
+        ui::Painter& painter,
+        const ui::Rect& draw_rect,
+        const ui::Style& style,
+        const std::string& label,
+        const std::string& value);
+};
+
+class EPIRBAppView : public ui::View {
+   public:
+    EPIRBAppView(ui::NavigationView& nav);
+    ~EPIRBAppView();
+
+    void set_parent_rect(const ui::Rect new_parent_rect) override;
+    void paint(ui::Painter&) override;
+    void focus() override;
+
+    std::string title() const override { return "EPIRB RX"; }
+
+   private:
+    app_settings::SettingsManager settings_{
+        "rx_epirb", app_settings::Mode::RX};
+
+    ui::NavigationView& nav_;
+
+    std::vector<EPIRBBeacon> recent_beacons{};
+    std::unique_ptr<EPIRBLogger> logger{};
+
+    EPIRBBeaconDetailView beacon_detail_view{nav_};
+
+    static constexpr auto header_height = 3 * 16;
+
+    ui::Text label_frequency{
+        {0 * 8, 0 * 16, 10 * 8, 1 * 16},
+        "406.028 MHz"};
+
+    ui::RFAmpField field_rf_amp{
+        {13 * 8, 0 * 16}};
+
+    ui::LNAGainField field_lna{
+        {15 * 8, 0 * 16}};
+
+    ui::VGAGainField field_vga{
+        {18 * 8, 0 * 16}};
+
+    ui::RSSI rssi{
+        {21 * 8, 0, 6 * 8, 4}};
+
+    ui::AudioVolumeField field_volume{
+        {screen_width - 2 * 8, 0 * 16}};
+
+    ui::Channel channel{
+        {21 * 8, 5, 6 * 8, 4}};
+
+    // Status display
+    ui::Text label_status{
+        {0 * 8, 1 * 16, 15 * 8, 1 * 16},
+        "Listening..."};
+
+    ui::Text label_beacons_count{
+        {16 * 8, 1 * 16, 14 * 8, 1 * 16},
+        "Beacons: 0"};
+
+    // Latest beacon info display
+    ui::Text label_latest{
+        {0 * 8, 2 * 16, 8 * 8, 1 * 16},
+        "Latest:"};
+
+    ui::Text text_latest_info{
+        {8 * 8, 2 * 16, 22 * 8, 1 * 16},
+        ""};
+
+    // Beacon list
+    ui::Console console{
+        {0, 3 * 16, 240, 168}};
+
+    ui::Button button_map{
+        {0, 224, 60, 24},
+        "Map"};
+
+    ui::Button button_clear{
+        {64, 224, 60, 24},
+        "Clear"};
+
+    ui::Button button_log{
+        {128, 224, 60, 24},
+        "Log"};
+
+    SignalToken signal_token_tick_second{};
+    uint32_t beacons_received = 0;
+
+    MessageHandlerRegistration message_handler_packet{
+        Message::ID::EPIRBPacket,
+        [this](Message* const p) {
+            const auto message = static_cast<const EPIRBPacketMessage*>(p);
+            this->on_packet(message->packet);
+        }};
+
+    void on_packet(const baseband::Packet& packet);
+    void on_beacon_decoded(const EPIRBBeacon& beacon);
+    void on_show_map();
+    void on_clear_beacons();
+    void on_toggle_log();
+    void on_tick_second();
+
+    void update_display();
+    std::string format_beacon_summary(const EPIRBBeacon& beacon);
+    std::string format_location(const EPIRBLocation& location);
+};
+
+}  // namespace ui::external_app::epirb_rx
+
+#endif  // __UI_EPIRB_RX_H__
@@ -96,22 +96,7 @@ void ERTRecentEntry::update(const ert::Packet& packet) {
    packet_type = packet.type();
 }

-namespace ui {
-
-template <>
-void RecentEntriesTable<ERTRecentEntries>::draw(
-    const Entry& entry,
-    const Rect& target_rect,
-    Painter& painter,
-    const Style& style) {
-    std::string line = ert::format::id(entry.id) + " " + ert::format::commodity_type(entry.commodity_type) + " " + ert::format::consumption(entry.last_consumption) + " ";
-
-    line += (entry.packet_type == ert::Packet::Type::SCM) ? ert::format::tamper_flags_scm(entry.last_tamper_flags) : ert::format::tamper_flags(entry.last_tamper_flags);
-    line += (entry.received_count > 99) ? " ++" : to_string_dec_uint(entry.received_count, 3);
-
-    line.resize(target_rect.width() / 8, ' ');
-    painter.draw_string(target_rect.location(), style, line);
-}
+namespace ui::external_app::ert_app {

 ERTAppView::ERTAppView(NavigationView& nav)
    : nav_{nav} {
@@ -182,4 +167,21 @@ void ERTAppView::on_freqchg(int64_t freq) {
    field_frequency.set_value(freq);
 }

-} /* namespace ui */
+} /* namespace ui::external_app::ert_app */
+
+namespace ui {
+template <>
+void RecentEntriesTable<ui::external_app::ert_app::ERTRecentEntries>::draw(
+    const Entry& entry,
+    const Rect& target_rect,
+    Painter& painter,
+    const Style& style) {
+    std::string line = ert::format::id(entry.id) + " " + ert::format::commodity_type(entry.commodity_type) + " " + ert::format::consumption(entry.last_consumption) + " ";
+
+    line += (entry.packet_type == ert::Packet::Type::SCM) ? ert::format::tamper_flags_scm(entry.last_tamper_flags) : ert::format::tamper_flags(entry.last_tamper_flags);
+    line += (entry.received_count > 99) ? " ++" : to_string_dec_uint(entry.received_count, 3);
+
+    line.resize(target_rect.width() / 8, ' ');
+    painter.draw_string(target_rect.location(), style, line);
+}
+}  // namespace ui
@@ -104,10 +104,9 @@ class ERTLogger {
    LogFile log_file{};
 };

+namespace ui::external_app::ert_app {
+
 using ERTRecentEntries = RecentEntries<ERTRecentEntry>;
-
-namespace ui {
-
 using ERTRecentEntriesView = RecentEntriesView<ERTRecentEntries>;

 class ERTAppView : public View {
@@ -188,6 +187,6 @@ class ERTAppView : public View {
    void on_show_list();
 };

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

 #endif /*__ERT_APP_H__*/
@@ -0,0 +1,83 @@
+/*
+ * 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 "ert_app.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::ert_app {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<ERTAppView>();
+}
+}  // namespace ui::external_app::ert_app
+
+extern "C" {
+
+__attribute__((section(".external_app.app_ert.application_information"), used)) application_information_t _application_information_ert = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::ert_app::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "ERT Meter",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x0F,
+        0x80,
+        0x7F,
+        0xC0,
+        0x0F,
+        0xFC,
+        0x0F,
+        0xC2,
+        0x0F,
+        0x82,
+        0x7F,
+        0x01,
+        0x0F,
+        0x01,
+        0x00,
+        0x21,
+        0x05,
+        0x53,
+        0x09,
+        0x56,
+        0x09,
+        0x50,
+        0x05,
+        0x50,
+        0x05,
+        0x20,
+        0xAD,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::green().v,
+    /*.menu_location = */ app_location_t::RX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_none */ {'P', 'E', 'R', 'T'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
@@ -110,12 +110,13 @@ set(EXTCPPSRC
 	#wefax_rx
 	external/wefax_rx/main.cpp
 	external/wefax_rx/ui_wefax_rx.cpp
-	
+
+
 	#noaaapt_rx
 	external/noaaapt_rx/main.cpp
 	external/noaaapt_rx/ui_noaaapt_rx.cpp
-		
-	
+
+

 	#shoppingcart_lock
 	external/shoppingcart_lock/main.cpp
@@ -215,19 +216,35 @@ set(EXTCPPSRC

 	#gfxEQ
 	external/gfxeq/main.cpp
-	external/gfxeq/ui_gfxeq.cpp	
+	external/gfxeq/ui_gfxeq.cpp

 	#detector_rx
 	external/detector_rx/main.cpp
-	external/detector_rx/ui_detector_rx.cpp		
+	external/detector_rx/ui_detector_rx.cpp

 	#space_invaders
 	external/spaceinv/main.cpp
-	external/spaceinv/ui_spaceinv.cpp		
+	external/spaceinv/ui_spaceinv.cpp

 	#blackjack
 	external/blackjack/main.cpp
-	external/blackjack/ui_blackjack.cpp	
+	external/blackjack/ui_blackjack.cpp
+
+	#battleship
+	external/battleship/main.cpp
+	external/battleship/ui_battleship.cpp
+
+	#ert
+	external/ert/main.cpp
+	external/ert/ert_app.cpp
+
+	#epirb_rx
+	external/epirb_rx/main.cpp
+	external/epirb_rx/ui_epirb_rx.cpp
+
+	#soundboard
+	external/soundboard/main.cpp
+	external/soundboard/soundboard_app.cpp
 )

 set(EXTAPPLIST
@@ -256,7 +273,7 @@ set(EXTAPPLIST
 	morse_tx
 	sstvtx
 	random_password
-	#acars_rx
+	acars_rx
 	ookbrute
 	ook_editor
 	wefax_rx
@@ -286,4 +303,8 @@ set(EXTAPPLIST
 	detector_rx
 	spaceinv
 	blackjack
+	battleship
+	ert
+	epirb_rx
+	soundboard
 )
@@ -78,6 +78,11 @@ MEMORY
    ram_external_app_dinogame   (rwx) : org = 0xADE50000, len = 32k
    ram_external_app_spaceinv   (rwx) : org = 0xADE60000, len = 32k
    ram_external_app_blackjack  (rwx) : org = 0xADE70000, len = 32k
+    ram_external_app_battleship   (rwx) : org = 0xADE80000, len = 32k
+    ram_external_app_ert        (rwx) : org = 0xADE90000, len = 32k
+    ram_external_app_epirb_rx   (rwx) : org = 0xADEA0000, len = 32k
+    ram_external_app_soundboard   (rwx) : org = 0xADEB0000, len = 32k
+
 }

 SECTIONS
@@ -339,7 +344,7 @@ SECTIONS
        KEEP(*(.external_app.app_stopwatch.application_information));
        *(*ui*external_app*stopwatch*);
    } > ram_external_app_stopwatch
-    
+
   .external_app_wefax_rx : ALIGN(4) SUBALIGN(4)
    {
        KEEP(*(.external_app.app_wefax_rx.application_information));
@@ -362,19 +367,19 @@ SECTIONS
    {
        KEEP(*(.external_app.app_doom.application_information));
        *(*ui*external_app*doom*);
-    } > ram_external_app_doom    
-    
+    } > ram_external_app_doom
+
    .external_app_debug_pmem : ALIGN(4) SUBALIGN(4)
    {
        KEEP(*(.external_app.app_debug_pmem.application_information));
        *(*ui*external_app*debug_pmem*);
-    } > ram_external_app_debug_pmem    
+    } > ram_external_app_debug_pmem

    .external_app_scanner : ALIGN(4) SUBALIGN(4)
    {
        KEEP(*(.external_app.app_scanner.application_information));
        *(*ui*external_app*scanner*);
-    } > ram_external_app_scanner    
+    } > ram_external_app_scanner

    .external_app_level : ALIGN(4) SUBALIGN(4)
    {
@@ -406,11 +411,35 @@ SECTIONS
        *(*ui*external_app*spaceinv*);
    } > ram_external_app_spaceinv

-        .external_app_blackjack : ALIGN(4) SUBALIGN(4)
+    .external_app_blackjack : ALIGN(4) SUBALIGN(4)
    {
        KEEP(*(.external_app.app_blackjack.application_information));
        *(*ui*external_app*blackjack*);
    } > ram_external_app_blackjack

+    .external_app_battleship : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_battleship.application_information));
+        *(*ui*external_app*battleship*);
+    } > ram_external_app_battleship
+
+    .external_app_ert : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_ert.application_information));
+        *(*ui*external_app*ert*);
+    } > ram_external_app_ert
+
+    .external_app_epirb_rx : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_epirb_rx.application_information));
+        *(*ui*external_app*epirb_rx*);
+    } > ram_external_app_epirb_rx
+
+    .external_app_soundboard : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_soundboard.application_information));
+        *(*ui*external_app*soundboard*);
+    } > ram_external_app_soundboard
+
 }

@@ -274,7 +274,7 @@ bool JammerView::update_config() {
        return true;
    } else {
        if (out_of_ranges)
-            nav_.display_modal("Error", "Jamming bandwidth too large.\nMust be less than 24MHz.");
+            nav_.display_modal("Error", "Jamming bandwidth too large.\nMust be 80MHz or less.");
        else
            nav_.display_modal("Error", "No range enabled.");
        return false;
@@ -10,7 +10,7 @@

 namespace ui::external_app::shoppingcart_lock {
 void initialize_app(NavigationView& nav) {
-    baseband::run_image(portapack::spi_flash::image_tag_audio_tx);
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
    nav.push<ShoppingCartLock>();
 }
 }  // namespace ui::external_app::shoppingcart_lock
@@ -0,0 +1,83 @@
+/*
+ * 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 "soundboard_app.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::soundboard {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<SoundBoardView>();
+}
+}  // namespace ui::external_app::soundboard
+
+extern "C" {
+
+__attribute__((section(".external_app.app_soundboard.application_information"), used)) application_information_t _application_information_soundboard = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::soundboard::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Soundbrd",
+    /*.bitmap_data = */ {
+        0xF0,
+        0x0F,
+        0x1C,
+        0x18,
+        0x17,
+        0x38,
+        0x15,
+        0x78,
+        0x15,
+        0xF8,
+        0x15,
+        0x82,
+        0x15,
+        0x8B,
+        0xD5,
+        0x83,
+        0xD5,
+        0xBB,
+        0xD5,
+        0x83,
+        0x15,
+        0x8B,
+        0x15,
+        0x92,
+        0x15,
+        0xA0,
+        0x17,
+        0x80,
+        0x1C,
+        0x80,
+        0xF0,
+        0xFF,
+    },
+    /*.icon_color = */ ui::Color::orange().v,
+    /*.menu_location = */ app_location_t::TX,
+    /*.desired_menu_position = */ -1,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_soundboard */ {'P', 'A', 'T', 'X'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
@@ -33,7 +33,7 @@
 using namespace tonekey;
 using namespace portapack;

-namespace ui {
+namespace ui::external_app::soundboard {

 #define FILE_PER_PAGE 50

@@ -323,4 +323,4 @@ SoundBoardView::~SoundBoardView() {
    baseband::shutdown();
 }

-}  // namespace ui
+}  // namespace ui::external_app::soundboard
@@ -33,7 +33,7 @@
 #include "app_settings.hpp"
 #include "radio_state.hpp"

-namespace ui {
+namespace ui::external_app::soundboard {

 class SoundBoardView : public View {
   public:
@@ -178,6 +178,6 @@ class SoundBoardView : public View {
        }};
 };

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

 #endif /*__UI_SOUNDBOARD_H__*/
@@ -262,7 +262,7 @@ void ViewWavView::on_playback_progress(const uint32_t progress) {
 ViewWavView::ViewWavView(
    NavigationView& nav)
    : nav_(nav) {
-    baseband::run_image(portapack::spi_flash::image_tag_audio_tx);
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
    wav_reader = std::make_unique<WAVFileReader>();

    add_children({&labels,
@@ -24,7 +24,7 @@
 namespace ui {

 RecentEntriesColumns::RecentEntriesColumns(
-    const std::initializer_list<RecentEntriesColumn> columns)
+    std::initializer_list<RecentEntriesColumn> columns)
    : _columns{columns} {
 }

@@ -133,14 +133,27 @@ class RecentEntriesColumns {
   public:
    using ContainerType = std::vector<RecentEntriesColumn>;

-    RecentEntriesColumns(
-        const std::initializer_list<RecentEntriesColumn> columns);
+    RecentEntriesColumns(std::initializer_list<RecentEntriesColumn> columns);

-    ContainerType::const_iterator begin() const { return std::begin(_columns); }
-    ContainerType::const_iterator end() const { return std::end(_columns); }
+    ContainerType::iterator begin() { return _columns.begin(); }
+    ContainerType::iterator end() { return _columns.end(); }
+    ContainerType::const_iterator begin() const { return _columns.begin(); }
+    ContainerType::const_iterator end() const { return _columns.end(); }
+
+    void set(size_t index, const std::string& name, size_t width) {
+        if (index < _columns.size()) {
+            _columns[index] = {name, width};
+        }
+    }
+
+    const RecentEntriesColumn& at(size_t index) const {
+        return _columns.at(index);
+    }
+
+    size_t size() const { return _columns.size(); }

   private:
-    const ContainerType _columns;
+    ContainerType _columns;
 };

 class RecentEntriesHeader : public Widget {
@@ -110,6 +110,7 @@ GeoPos::GeoPos(
    text_alt_unit.set(altitude_unit_ ? "m" : "ft");
    if (speed_unit_ == KMPH) text_speed_unit.set("kmph");
    if (speed_unit_ == MPH) text_speed_unit.set("mph");
+    if (speed_unit_ == KNOTS) text_speed_unit.set("knots");
    if (speed_unit_ == HIDDEN) {
        text_speed_unit.hidden(true);
        label_spd_position.hidden(true);
@@ -81,6 +81,7 @@ class GeoPos : public View {
        NONE = 0,
        MPH,
        KMPH,
+        KNOTS,
        HIDDEN = 255
    };

@@ -134,7 +135,7 @@ class GeoPos : public View {
        {12 * 8, 0 * 16, 2 * 8, 16},
        ""};
    Text text_speed_unit{
-        {25 * 8, 0 * 16, 4 * 8, 16},
+        {25 * 8, 0 * 16, 5 * 8, 16},
        ""};

    NumberField field_lat_degrees{
@@ -275,29 +275,63 @@ FrequencyKeypadView::FrequencyKeypadView(
        };
        button.on_select = button_fn;
        button.set_parent_rect({(n % 3) * button_w,
-                                (n / 3) * button_h + 24,
+                                (n / 3) * button_h + 25,
                                button_w, button_h});
        button.set_text(label);
        n++;
    }

-    add_children({&button_save,
+    add_children({&button_save_ghz,
+                  &button_save_khz,
+                  &button_save_mhz,
                  &button_load,
-                  &button_close});
+                  &button_clear,
+                  &button_done_ghz,
+                  &button_done_mhz,
+                  &button_done_khz});

-    button_save.on_select = [this, &nav](Button&) {
-        nav.push<FrequencySaveView>(this->value());
+    button_save_mhz.on_select = [this, &nav](Button&) {
+        nav.push<FrequencySaveView>(this->value(FrequencyUnit::MHZ));  // pass as mhz and handle unit convert logic there, cuz idk if pass others would loss something
    };
+    button_save_ghz.on_select = [this, &nav](Button&) {
+        nav.push<FrequencySaveView>(this->value(FrequencyUnit::GHZ));
+    };
+    button_save_khz.on_select = [this, &nav](Button&) {
+        nav.push<FrequencySaveView>(this->value(FrequencyUnit::KHZ));
+    };
+
    button_load.on_select = [this, &nav](Button&) {
        auto load_view = nav.push<FrequencyLoadView>();
        load_view->on_frequency_loaded = [this](rf::Frequency value) {
            set_value(value);
        };
    };
+    button_clear.on_select = [this](Button&) {
+        mhz.clear();
+        submhz.clear();
+        clear_field_if_digits_entered = true;
+        if (state == State::DigitSubMHz) {
+            state = State::DigitMHz;
+        }
+        draw_input_hint();
+        update_text();
+    };

-    button_close.on_select = [this, &nav](Button&) {
+    button_done_ghz.on_select = [this, &nav](Button&) {
        if (on_changed)
-            on_changed(this->value());
+            on_changed(this->value(FrequencyUnit::GHZ));
+        nav.pop();
+    };
+
+    button_done_mhz.on_select = [this, &nav](Button&) {
+        if (on_changed)
+            on_changed(this->value(FrequencyUnit::MHZ));
+        nav.pop();
+    };
+
+    button_done_khz.on_select = [this, &nav](Button&) {
+        if (on_changed)
+            on_changed(this->value(FrequencyUnit::KHZ));
        nav.pop();
    };

@@ -305,11 +339,20 @@ FrequencyKeypadView::FrequencyKeypadView(
 }

 void FrequencyKeypadView::focus() {
-    button_close.focus();
+    button_done_mhz.focus();
 }

-rf::Frequency FrequencyKeypadView::value() const {
-    return mhz.as_int() * 1000000ULL + submhz.as_int() * submhz_base;
+rf::Frequency FrequencyKeypadView::value(FrequencyUnit frequency_uni) const {
+    switch (frequency_uni) {
+        case FrequencyUnit::GHZ:
+            return mhz.as_int() * 1000000000ULL + submhz.as_int() * submhz_base * 1000;
+        case FrequencyUnit::MHZ:
+            return mhz.as_int() * 1000000ULL + submhz.as_int() * submhz_base;
+        case FrequencyUnit::KHZ:
+            return mhz.as_int() * 1000ULL + submhz.as_int() * submhz_base / 1000;
+        default:
+            return mhz.as_int() * 1000000ULL + submhz.as_int() * submhz_base;
+    }
 }

 void FrequencyKeypadView::set_value(const rf::Frequency new_value) {
@@ -381,6 +424,25 @@ void FrequencyKeypadView::field_toggle() {
        state = State::DigitMHz;
        clear_field_if_digits_entered = true;
    }
+    draw_input_hint();
+}
+
+void FrequencyKeypadView::draw_input_hint() {
+    set_dirty();
+}
+
+void FrequencyKeypadView::paint(Painter& painter) {
+    View::paint(painter);
+
+    const bool s = state == State::DigitMHz;
+    painter.draw_hline(
+        {0, 36},
+        8 * 4,
+        s ? Color::white() : Color::black());
+    painter.draw_hline(
+        {5 * 8, 36},
+        8 * 4,
+        s ? Color::black() : Color::white());
 }

 void FrequencyKeypadView::update_text() {
@@ -44,6 +44,12 @@ extern options_db_t freqman_steps;

 namespace ui {

+enum FrequencyUnit {
+    GHZ = 0,
+    MHZ,
+    KHZ,
+};
+
 class FrequencyField : public Widget {
   public:
    std::function<void(rf::Frequency)> on_change{};
@@ -207,8 +213,9 @@ class FrequencyKeypadView : public View {
        const rf::Frequency value);

    void focus() override;
+    void paint(Painter& painter) override;

-    rf::Frequency value() const;
+    rf::Frequency value(FrequencyUnit frequency_uni) const;
    void set_value(const rf::Frequency new_value);
    bool on_encoder(const EncoderEvent delta) override;
    bool on_keyboard(const KeyboardEvent key) override;
@@ -220,7 +227,6 @@ class FrequencyKeypadView : public View {

    static constexpr int mhz_digits = 4;
    static constexpr int submhz_digits = 4;
-
    static constexpr int mhz_mod = pow(10, mhz_digits);
    static constexpr int submhz_base = pow(10, 6 - submhz_digits);
    static constexpr int text_digits = mhz_digits + 1 + submhz_digits;
@@ -230,15 +236,30 @@ class FrequencyKeypadView : public View {

    std::array<Button, 12> buttons{};

-    Button button_save{
-        {0, button_h * 5, 60, button_h},
-        "Save"};
+    Button button_save_ghz{
+        {0, 14 * 16, 80 / 2 - 1, 2 * 16},
+        "GHz"};
+    Button button_save_khz{
+        {0 + 40 - 1, 14 * 16, 80 / 2, 2 * 16},
+        "kHz"};
+    Button button_save_mhz{
+        {0, 16 * 16, 80 - 1, 3 * 16},
+        "Save MHz"};
    Button button_load{
-        {60, button_h * 5, 60, button_h},
+        {80 + 1, 14 * 16, 80 - 2, 40},
        "Load"};
-    Button button_close{
-        {128, button_h * 5, 112, button_h},
-        "Done"};
+    Button button_clear{
+        {80 + 1, 264, 80 - 2, 40},
+        "Clear"};
+    Button button_done_ghz{
+        {160 + 1, 14 * 16, 80 / 2 - 1, 2 * 16},
+        "GHz"};
+    Button button_done_khz{
+        {160 + 40, 14 * 16, 80 / 2 - 1, 2 * 16},
+        "kHz"};
+    Button button_done_mhz{
+        {160 + 1, 16 * 16, 80 - 2, 3 * 16},
+        "Done MHz"};

    /* TODO: Template arg required in enum?! */
    FieldString<mhz_digits> mhz{FieldString<4>::Justify::Right};
@@ -254,6 +275,8 @@ class FrequencyKeypadView : public View {

    void on_button(Button& button);

+    void draw_input_hint();
+
    void digit_add(const char c);
    void digit_delete();

@@ -70,9 +70,7 @@
 #include "ble_rx_app.hpp"
 #include "ble_tx_app.hpp"
 #include "capture_app.hpp"
-#include "ert_app.hpp"
 #include "pocsag_app.hpp"
-#include "soundboard_app.hpp"

 #include "core_control.hpp"
 #include "file.hpp"
@@ -131,7 +129,6 @@ const NavigationView::AppList NavigationView::appList = {
    {"aprsrx", "APRS", RX, Color::green(), &bitmap_icon_aprs, new ViewFactory<APRSRXView>()},
    {"audio", "Audio", RX, Color::green(), &bitmap_icon_speaker, new ViewFactory<AnalogAudioView>()},
    {"blerx", "BLE Rx", RX, Color::green(), &bitmap_icon_btle, new ViewFactory<BLERxView>()},
-    {"ert", "ERT Meter", RX, Color::green(), &bitmap_icon_ert, new ViewFactory<ERTAppView>()},
    {"pocsag", "POCSAG", RX, Color::green(), &bitmap_icon_pocsag, new ViewFactory<POCSAGAppView>()},
    {"radiosonde", "Radiosnde", RX, Color::green(), &bitmap_icon_sonde, new ViewFactory<SondeView>()},
    {"search", "Search", RX, Color::yellow(), &bitmap_icon_search, new ViewFactory<SearchView>()},
@@ -144,7 +141,6 @@ const NavigationView::AppList NavigationView::appList = {
    {"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>()},
    {"touchtune", "TouchTune", TX, ui::Color::green(), &bitmap_icon_touchtunes, new ViewFactory<TouchTunesView>()},
    {"signalgen", "SignalGen", TX, Color::green(), &bitmap_icon_cwgen, new ViewFactory<SigGenView>()},
    /* TRX ********************************************************************/
@@ -764,7 +760,7 @@ 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, &app]() {
                            i2cdev::I2CDevManager::set_autoscan_interval(0); //if i navigate away from any menu, turn off autoscan
                            nav.push_view(std::unique_ptr<View>(app.viewFactory->produce(nav))); }},
                          true);
@@ -791,8 +787,8 @@ void add_external_items(NavigationView& nav, app_location_t location, BtnGridVie
                         error_tile_pos);
    } else {
        std::sort(externalItems.begin(), externalItems.end(), [](const auto &a, const auto &b)
-        { 
-            return a.desired_position < b.desired_position; 
+        {
+            return a.desired_position < b.desired_position;
        });

        for (auto const& gridItem : externalItems) {
@@ -801,7 +797,7 @@ void add_external_items(NavigationView& nav, app_location_t location, BtnGridVie
            } else {
                grid.insert_item(gridItem, gridItem.desired_position, true);
            }
-            
+
        }

        grid.update_items();
@@ -279,7 +279,7 @@ macro(DeclareTargets chunk_tag name)
 	include_directories(. ${INCDIR} ${MODE_INCDIR})
 	link_directories(${LLIBDIR})
 	target_link_libraries(${PROJECT_NAME}.elf ${LIBS})
-	
+
 	target_link_libraries(${PROJECT_NAME}.elf -Wl,-Map=${PROJECT_NAME}.map)
 	target_link_libraries(${PROJECT_NAME}.elf -Wl,--print-memory-usage)

@@ -369,13 +369,6 @@ set(MODE_CPPSRC
 DeclareTargets(PAMA am_audio)


-### Audio transmit
-
-set(MODE_CPPSRC
-	proc_audiotx.cpp
-)
-DeclareTargets(PATX audio_tx)
-
 ### Capture

 set(MODE_CPPSRC
@@ -397,13 +390,6 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PSON sonde)

-### FSK TX
-
-set(MODE_CPPSRC
-	proc_fsk.cpp
-)
-DeclareTargets(PFSK fsktx)
-
 ### FSK RX

 set(MODE_CPPSRC
@@ -411,6 +397,12 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PFSR fskrx)

+### FSK TX
+
+set(MODE_CPPSRC
+	proc_fsk.cpp
+)
+DeclareTargets(PFSK fsktx)

 ### Microphone transmit

@@ -579,6 +571,14 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PAFR afskrx)

+### EPIRB
+
+set(MODE_CPPSRC
+	proc_epirb.cpp
+)
+DeclareTargets(PEPI epirb_rx)
+
+
 ### NRF RX

 set(MODE_CPPSRC
@@ -683,6 +683,13 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PNOA noaaapt_rx)

+### Audio transmit
+
+set(MODE_CPPSRC
+	proc_audiotx.cpp
+)
+DeclareTargets(PATX audio_tx)
+

 ### HackRF "factory" firmware

@@ -30,10 +30,10 @@

 #define new_way

-int BTLETxProcessor::gen_sample_from_phy_bit(char* bit, char* sample, int num_bit) {
+int BTLETxProcessor::gen_sample_from_phy_bit(char* bit, int8_t* sample, int num_bit) {
    int num_sample = (num_bit * SAMPLE_PER_SYMBOL) + (LEN_GAUSS_FILTER * SAMPLE_PER_SYMBOL);

-    int8_t* tmp_phy_bit_over_sampling_int8 = (int8_t*)tmp_phy_bit_over_sampling;
+    memset(tmp_phy_bit_over_sampling_int8, 0, sizeof(tmp_phy_bit_over_sampling_int8));

    int i, j;

@@ -242,6 +242,7 @@ void BTLETxProcessor::fill_adv_pdu_header(PKT_INFO* pkt, int txadd, int rxadd, i
        bit_out[2] = 1;
        bit_out[1] = 0;
        bit_out[0] = 0;
+        rxadd = 1;  // Scan response assumed to be with random address.
    } else if (pkt->pkt_type == CONNECT_REQ) {
        bit_out[3] = 0;
        bit_out[2] = 1;
@@ -279,14 +280,12 @@ void BTLETxProcessor::fill_adv_pdu_header(PKT_INFO* pkt, int txadd, int rxadd, i
 int BTLETxProcessor::calculate_sample_for_ADV(PKT_INFO* pkt) {
    pkt->num_info_bit = 0;

-    // gen preamble and access address
-    const char* AA = "AA";
-    const char* AAValue = "D6BE898E";
-    pkt->num_info_bit = pkt->num_info_bit + convert_hex_to_bit((char*)AA, pkt->info_bit, 0, 1);
-    pkt->num_info_bit = pkt->num_info_bit + convert_hex_to_bit((char*)AAValue, pkt->info_bit + pkt->num_info_bit, 0, 4);
+    pkt->num_info_bit = pkt->num_info_bit + convert_hex_to_bit(AA, pkt->info_bit, 0, 1);
+    pkt->num_info_bit = pkt->num_info_bit + convert_hex_to_bit(AAValue, pkt->info_bit + pkt->num_info_bit, 0, 4);

    // get txadd and rxadd
-    int txadd = 0, rxadd = 0;
+    // Tx assumed to be random address.
+    int txadd = 1, rxadd = 0;

    pkt->num_info_bit = pkt->num_info_bit + 16;  // 16 is header length

@@ -332,39 +331,56 @@ int BTLETxProcessor::calculate_pkt_info(PKT_INFO* pkt) {
 void BTLETxProcessor::execute(const buffer_c8_t& buffer) {
    int8_t re, im;

-    // This is called at 4M/2048 = 1953Hz
-    for (size_t i = 0; i < buffer.count; i++) {
-        if (configured) {
-            // This is going to loop through each sample bit and push it to the output buffer.
-            if (sample_count > length) {
-                configured = false;
-                sample_count = 0;
-
-                txprogress_message.done = true;
-                shared_memory.application_queue.push(txprogress_message);
-            } else {
-                // Real and imaginary was already calculated in gen_sample_from_phy_bit.
-                // It was processed from each data bit, run through a Gaussian Filter, and then ran through sin and cos table to get each IQ bit.
-                re = (int8_t)packets.phy_sample[sample_count++];
-                im = (int8_t)packets.phy_sample[sample_count++];
-
-                buffer.p[i] = {re, im};
-
-                if (progress_count >= progress_notice) {
-                    progress_count = 0;
-                    txprogress_message.progress++;
-                    txprogress_message.done = false;
-                    shared_memory.application_queue.push(txprogress_message);
-                } else {
-                    progress_count++;
-                }
-            }
-        } else {
-            re = 0;
-            im = 0;
-
-            buffer.p[i] = {re, im};
+    if (!configured) {
+        for (size_t i = 0; i < buffer.count; i++) {
+            buffer.p[i] = {0, 0};  // Fill the buffer with zeros if not configured
        }
+        return;
+    }
+
+    if (configured) {
+        switch (txprogress_message.progress) {
+            case 1:
+            case 2: {
+                for (size_t i = 0; i < buffer.count; i++) {
+                    buffer.p[i] = {0, 0};  // Pre and Post pad BLE Packet.
+                }
+            } break;
+
+            case 0: {
+                size_t i = 0;
+                for (i = 0; (i < buffer.count) && (sample_count < length); i++) {
+                    re = packets.phy_sample[sample_count++];
+                    im = packets.phy_sample[sample_count++];
+
+                    buffer.p[i] = {re, im};
+                }
+
+                if (sample_count >= length && i < buffer.count) {
+                    // Fill the rest of the buffer with zeros if we reach the end of the packet
+                    for (; i < buffer.count; i++) {
+                        buffer.p[i] = {0, 0};
+                    }
+                }
+            } break;
+
+            case 3: {
+                for (size_t i = 0; i < buffer.count; i++) {
+                    buffer.p[i] = {0, 0};  // Pre and Post pad BLE Packet.
+                }
+
+                if (sample_count >= length) {
+                    sample_count = 0;
+                    configured = false;
+
+                    doneSending = true;
+                    txprogress_message.done = true;
+                    shared_memory.application_queue.push(txprogress_message);
+                }
+            } break;
+        }
+
+        txprogress_message.progress++;
    }
 }

@@ -397,11 +413,13 @@ void BTLETxProcessor::configure(const BTLETxConfigureMessage& message) {
    // Starting at sample_count 0 since packets.num_phy_sample contains every sample needed to be sent out.
    sample_count = 0;
    progress_count = 0;
+    repeatCount = 0;
    progress_notice = 64;

    txprogress_message.progress = 0;
    txprogress_message.done = false;
    configured = true;
+    doneSending = false;
 }

 int main() {
@@ -80,18 +80,11 @@ class BTLETxProcessor : public BasebandProcessor {
        int num_info_bit;
        char info_bit[MAX_NUM_PHY_BYTE * 8];  // without CRC and whitening

-        int num_info_byte;
-        uint8_t info_byte[MAX_NUM_PHY_BYTE];
-
        int num_phy_bit;
        char phy_bit[MAX_NUM_PHY_BYTE * 8];  // all bits which will be fed to GFSK modulator

-        int num_phy_byte;
-        uint8_t phy_byte[MAX_NUM_PHY_BYTE];
-
        int num_phy_sample;
-        char phy_sample[2 * MAX_NUM_PHY_SAMPLE];     // GFSK output to D/A (hackrf board)
-        int8_t phy_sample1[2 * MAX_NUM_PHY_SAMPLE];  // GFSK output to D/A (hackrf board)
+        int8_t phy_sample[2 * MAX_NUM_PHY_SAMPLE];  // GFSK output to D/A (hackrf board)

        int space;  // how many millisecond null signal shouwl be padded after this packet
    };
@@ -108,22 +101,27 @@ class BTLETxProcessor : public BasebandProcessor {
    void crc24(char* bit_in, int num_bit, char* init_hex, char* crc_result);
    int convert_hex_to_bit(char* hex, char* bit, int stream_flip, int octet_limit);
    void octet_hex_to_bit(char* hex, char* bit);
-    int gen_sample_from_phy_bit(char* bit, char* sample, int num_bit);
+    int gen_sample_from_phy_bit(char* bit, int8_t* sample, int num_bit);
    bool configured = false;

-    float tmp_phy_bit_over_sampling[MAX_NUM_PHY_SAMPLE + 2 * LEN_GAUSS_FILTER * SAMPLE_PER_SYMBOL];
+    int8_t tmp_phy_bit_over_sampling_int8[MAX_NUM_PHY_SAMPLE + 2 * LEN_GAUSS_FILTER * SAMPLE_PER_SYMBOL];
    float gauss_coef[LEN_GAUSS_FILTER * SAMPLE_PER_SYMBOL] = {7.561773e-09, 1.197935e-06, 8.050684e-05, 2.326833e-03, 2.959908e-02, 1.727474e-01, 4.999195e-01, 8.249246e-01, 9.408018e-01, 8.249246e-01, 4.999195e-01, 1.727474e-01, 2.959908e-02, 2.326833e-03, 8.050684e-05, 1.197935e-06};

    uint32_t samples_per_bit{4};
    uint32_t channel_number{37};
    char macAddress[13] = "FFFFFFFFFF";
+    char AA[3] = "AA";
+    char AAValue[9] = "D6BE898E";
    char advertisementData[63] = {0};

    uint32_t length{0};
    uint32_t shift_zero{}, shift_one{};
    uint32_t progress_notice{}, progress_count{0};
    uint32_t sample_count{0};
+    uint32_t paddingCount{0};
+    uint32_t repeatCount{0};
    uint32_t phase{0}, sphase{0};
+    bool doneSending{false};

    uint8_t cur_bit{0};
    uint16_t bit_pos{0};
@@ -27,7 +27,7 @@

 #include "event_m4.hpp"

-float BTLERxProcessor::get_phase_diff(const complex16_t& sample0, const complex16_t& sample1) {
+inline float BTLERxProcessor::get_phase_diff(const complex16_t& sample0, const complex16_t& sample1) {
    // Calculate the phase difference between two samples.
    float dI = sample1.real() * sample0.real() + sample1.imag() * sample0.imag();
    float dQ = sample1.imag() * sample0.real() - sample1.real() * sample0.imag();
@@ -36,7 +36,7 @@ float BTLERxProcessor::get_phase_diff(const complex16_t& sample0, const complex1
    return phase_diff;
 }

-uint32_t BTLERxProcessor::crc_init_reorder(uint32_t crc_init) {
+inline uint32_t BTLERxProcessor::crc_init_reorder(uint32_t crc_init) {
    int i;
    uint32_t crc_init_tmp, crc_init_input, crc_init_input_tmp;

@@ -62,7 +62,7 @@ uint32_t BTLERxProcessor::crc_init_reorder(uint32_t crc_init) {
    return (crc_init_tmp);
 }

-uint_fast32_t BTLERxProcessor::crc_update(uint_fast32_t crc, const void* data, size_t data_len) {
+inline uint_fast32_t BTLERxProcessor::crc_update(uint_fast32_t crc, const void* data, size_t data_len) {
    const unsigned char* d = (const unsigned char*)data;
    unsigned int tbl_idx;

@@ -76,7 +76,7 @@ uint_fast32_t BTLERxProcessor::crc_update(uint_fast32_t crc, const void* data, s
    return crc & 0xffffff;
 }

-uint_fast32_t BTLERxProcessor::crc24_byte(uint8_t* byte_in, int num_byte, uint32_t init_hex) {
+inline uint_fast32_t BTLERxProcessor::crc24_byte(uint8_t* byte_in, int num_byte, uint32_t init_hex) {
    uint_fast32_t crc = init_hex;

    crc = crc_update(crc, byte_in, num_byte);
@@ -84,7 +84,7 @@ uint_fast32_t BTLERxProcessor::crc24_byte(uint8_t* byte_in, int num_byte, uint32
    return (crc);
 }

-bool BTLERxProcessor::crc_check(uint8_t* tmp_byte, int body_len, uint32_t crc_init) {
+inline bool BTLERxProcessor::crc_check(uint8_t* tmp_byte, int body_len, uint32_t crc_init) {
    int crc24_checksum;

    crc24_checksum = crc24_byte(tmp_byte, body_len, crc_init);  // 0x555555 --> 0xaaaaaa. maybe because byte order
@@ -96,7 +96,7 @@ bool BTLERxProcessor::crc_check(uint8_t* tmp_byte, int body_len, uint32_t crc_in
    return (crc24_checksum != checksumReceived);
 }

-void BTLERxProcessor::scramble_byte(uint8_t* byte_in, int num_byte, const uint8_t* scramble_table_byte, uint8_t* byte_out) {
+inline void BTLERxProcessor::scramble_byte(uint8_t* byte_in, int num_byte, const uint8_t* scramble_table_byte, uint8_t* byte_out) {
    int i;

    for (i = 0; i < num_byte; i++) {
@@ -104,7 +104,7 @@ void BTLERxProcessor::scramble_byte(uint8_t* byte_in, int num_byte, const uint8_
    }
 }

-int BTLERxProcessor::verify_payload_byte(int num_payload_byte, ADV_PDU_TYPE pdu_type) {
+inline int BTLERxProcessor::verify_payload_byte(int num_payload_byte, ADV_PDU_TYPE pdu_type) {
    // Should at least have 6 bytes for the MAC Address.
    // Also ensuring that there is at least 1 byte of data.
    if (num_payload_byte <= 6) {
@@ -131,26 +131,27 @@ int BTLERxProcessor::verify_payload_byte(int num_payload_byte, ADV_PDU_TYPE pdu_
    return 0;
 }

-void BTLERxProcessor::resetOffsetTracking() {
+inline void BTLERxProcessor::resetOffsetTracking() {
    frequency_offset = 0.0f;
    frequency_offset_estimate = 0.0f;
    phase_buffer_index = 0;
    memset(phase_buffer, 0, sizeof(phase_buffer));
 }

-void BTLERxProcessor::resetBitPacketIndex() {
+inline void BTLERxProcessor::resetBitPacketIndex() {
    memset(rb_buf, 0, sizeof(rb_buf));
    packet_index = 0;
    bit_index = 0;
 }

-void BTLERxProcessor::resetToDefaultState() {
+inline void BTLERxProcessor::resetToDefaultState() {
    parseState = Parse_State_Begin;
    resetOffsetTracking();
    resetBitPacketIndex();
+    crc_init_internal = crc_init_reorder(crc_initalVale);
 }

-void BTLERxProcessor::demodulateFSKBits(int num_demod_byte) {
+inline void BTLERxProcessor::demodulateFSKBits(int num_demod_byte) {
    for (; packet_index < num_demod_byte; packet_index++) {
        for (; bit_index < 8; bit_index++) {
            if (samples_eaten >= (int)dst_buffer.count) {
@@ -168,6 +169,15 @@ void BTLERxProcessor::demodulateFSKBits(int num_demod_byte) {
            // phaseSum /= (SAMPLE_PER_SYMBOL);
            // phaseSum -= frequency_offset;

+            /*
+            alternate method. faster, but less precise. with this, you need to check against this: if (samples_eaten >= (int)dst_buffer.count + SAMPLE_PER_SYMBOL)  (not so good...)
+                        int I0 = dst_buffer.p[samples_eaten].real();
+                        int Q0 = dst_buffer.p[samples_eaten].imag();
+                        int I1 = dst_buffer.p[samples_eaten + 1 * SAMPLE_PER_SYMBOL].real();
+                        int Q1 = dst_buffer.p[samples_eaten + 1 * SAMPLE_PER_SYMBOL].imag();
+                        bool bitDecision = (I0 * Q1 - I1 * Q0) > 0 ? 1 : 0;
+            */
+
            bool bitDecision = (phaseSum > 0.0f);
            rb_buf[packet_index] = rb_buf[packet_index] | (bitDecision << bit_index);

@@ -178,9 +188,9 @@ void BTLERxProcessor::demodulateFSKBits(int num_demod_byte) {
    }
 }

-void BTLERxProcessor::handleBeginState() {
+inline void BTLERxProcessor::handleBeginState() {
    uint32_t validAccessAddress = DEFAULT_ACCESS_ADDR;
-    uint32_t accesssAddress = 0;
+    static uint32_t accesssAddress = 0;

    int hit_idx = (-1);

@@ -191,8 +201,10 @@ void BTLERxProcessor::handleBeginState() {
            phaseDiff += get_phase_diff(dst_buffer.p[i + j], dst_buffer.p[i + j + 1]);
        }

-        phase_buffer[phase_buffer_index] = phaseDiff / (SAMPLE_PER_SYMBOL);
+        // disabled, due to not used anywhere
+        /* phase_buffer[phase_buffer_index] = phaseDiff / (SAMPLE_PER_SYMBOL);
        phase_buffer_index = (phase_buffer_index + 1) % ROLLING_WINDOW;
+        */

        bool bitDecision = (phaseDiff > 0);

@@ -200,14 +212,15 @@ void BTLERxProcessor::handleBeginState() {

        int errors = __builtin_popcount(accesssAddress ^ validAccessAddress) & 0xFFFFFFFF;

-        if (errors <= 4) {
+        if (!errors) {
            hit_idx = i + SAMPLE_PER_SYMBOL;

-            for (int k = 0; k < ROLLING_WINDOW; k++) {
+            // disabled, due to not used anywhere
+            /* for (int k = 0; k < ROLLING_WINDOW; k++) {
                frequency_offset_estimate += phase_buffer[k];
            }
-
            frequency_offset = frequency_offset_estimate / ROLLING_WINDOW;
+            */

            break;
        }
@@ -215,7 +228,7 @@ void BTLERxProcessor::handleBeginState() {

    if (hit_idx == -1) {
        // Process more samples.
-        samples_eaten = dst_buffer.count + 1;
+        samples_eaten = (int)dst_buffer.count + 1;
        return;
    }

@@ -224,7 +237,7 @@ void BTLERxProcessor::handleBeginState() {
    parseState = Parse_State_PDU_Header;
 }

-void BTLERxProcessor::handlePDUHeaderState() {
+inline void BTLERxProcessor::handlePDUHeaderState() {
    if (samples_eaten > (int)dst_buffer.count) {
        return;
    }
@@ -232,6 +245,7 @@ void BTLERxProcessor::handlePDUHeaderState() {
    demodulateFSKBits(NUM_PDU_HEADER_BYTE);

    if (packet_index < NUM_PDU_HEADER_BYTE || bit_index != 0) {
+        resetToDefaultState();
        return;
    }

@@ -244,14 +258,14 @@ void BTLERxProcessor::handlePDUHeaderState() {

    // Not a valid Advertise Payload.
    if ((payload_len < 6) || (payload_len > 37)) {
-        parseState = Parse_State_Begin;
+        resetToDefaultState();
        return;
    } else {
        parseState = Parse_State_PDU_Payload;
    }
 }

-void BTLERxProcessor::handlePDUPayloadState() {
+inline void BTLERxProcessor::handlePDUPayloadState() {
    const int num_demod_byte = (payload_len + 3);

    if (samples_eaten > (int)dst_buffer.count) {
@@ -261,6 +275,7 @@ void BTLERxProcessor::handlePDUPayloadState() {
    demodulateFSKBits(num_demod_byte + NUM_PDU_HEADER_BYTE);

    if (packet_index < (num_demod_byte + NUM_PDU_HEADER_BYTE) || bit_index != 0) {
+        resetToDefaultState();
        return;
    }

@@ -316,26 +331,24 @@ void BTLERxProcessor::handlePDUPayloadState() {
 void BTLERxProcessor::execute(const buffer_c8_t& buffer) {
    if (!configured) return;

+    // a less computationally expensive method
    max_dB = -128;
-
-    real = -128;
-    imag = -128;
-
-    auto* ptr = buffer.p;
-    auto* end = &buffer.p[buffer.count];
-
-    while (ptr < end) {
-        float dbm = mag2_to_dbm_8bit_normalized(ptr->real(), ptr->imag(), 1.0f, 50.0f);
-
-        if (dbm > max_dB) {
-            max_dB = dbm;
-            real = ptr->real();
-            imag = ptr->imag();
+    uint32_t max_squared = 0;
+    int8_t imag = 0;
+    int8_t real = 0;
+    void* src_p = buffer.p;
+    while (src_p < &buffer.p[buffer.count]) {
+        const uint32_t sample = *__SIMD32(src_p)++;
+        const uint32_t mag_sq = __SMUAD(sample, sample);
+        if (mag_sq > max_squared) {
+            max_squared = mag_sq;
+            imag = ((complex8_t*)src_p)->imag();
+            real = ((complex8_t*)src_p)->real();
        }
-
-        ptr++;
    }

+    max_dB = mag2_to_dbm_8bit_normalized(real, imag, 1.0f, 50.0f);
+
    // 4Mhz 2048 samples
    // Decimated by 4 to achieve 2048/4 = 512 samples at 1 sample per symbol.
    decim_0.execute(buffer, dst_buffer);
@@ -366,11 +379,9 @@ void BTLERxProcessor::on_message(const Message* const message) {

 void BTLERxProcessor::configure(const BTLERxConfigureMessage& message) {
    channel_number = message.channel_number;
-    decim_0.configure(taps_BTLE_2M_PHY_decim_0.taps);
+    decim_0.configure(taps_BTLE_Dual_PHY.taps);

    configured = true;
-
-    crc_init_internal = crc_init_reorder(crc_initalVale);
 }

 int main() {
@@ -133,8 +133,6 @@ class BTLERxProcessor : public BasebandProcessor {
    uint8_t payload_len{0};
    uint8_t pdu_type{0};
    int32_t max_dB{0};
-    int8_t real{0};
-    int8_t imag{0};
    uint16_t packet_index{0};
    uint8_t bit_index{0};

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2024 EPIRB Receiver Implementation
+ *
+ * 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 "proc_epirb.hpp"
+
+#include "portapack_shared_memory.hpp"
+
+#include "dsp_fir_taps.hpp"
+
+#include "event_m4.hpp"
+#include <ch.h>
+
+EPIRBProcessor::EPIRBProcessor() {
+    // Configure the decimation filters for narrowband EPIRB signal
+    // Target: Reduce 2.457600 MHz to ~38.4 kHz for 400 bps processing
+    decim_0.configure(taps_11k0_decim_0.taps);
+    decim_1.configure(taps_11k0_decim_1.taps);
+    baseband_thread.start();
+}
+
+void EPIRBProcessor::execute(const buffer_c8_t& buffer) {
+    /* 2.4576MHz, 2048 samples */
+
+    // First decimation stage: 2.4576 MHz -> 307.2 kHz
+    const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
+
+    // Second decimation stage: 307.2 kHz -> 38.4 kHz
+    const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
+    const auto decimator_out = decim_1_out;
+
+    /* 38.4kHz, 32 samples (approximately) */
+    feed_channel_stats(decimator_out);
+
+    // Process each decimated sample through the matched filter
+    for (size_t i = 0; i < decimator_out.count; i++) {
+        // Apply matched filter for BPSK demodulation
+        if (mf.execute_once(decimator_out.p[i])) {
+            // Feed symbol to clock recovery when matched filter triggers
+            clock_recovery(mf.get_output());
+        }
+    }
+}
+
+void EPIRBProcessor::consume_symbol(const float raw_symbol) {
+    // BPSK demodulation: positive = 1, negative = 0
+    const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
+
+    // Decode bi-phase L encoding manually
+    // In bi-phase L: 0 = no transition, 1 = transition
+    // This is a simple edge detector
+    const auto decoded_symbol = sliced_symbol ^ last_symbol;
+    last_symbol = sliced_symbol;
+
+    // Build packet from decoded symbols
+    packet_builder.execute(decoded_symbol);
+}
+
+void EPIRBProcessor::payload_handler(const baseband::Packet& packet) {
+    // EPIRB packet received - validate and process
+    if (packet.size() >= 112) {  // Minimum EPIRB data payload size (112 bits)
+        packets_received++;
+        last_packet_timestamp = Timestamp::now();
+
+        // Create and send EPIRB packet message to application layer
+        const EPIRBPacketMessage message{packet};
+        shared_memory.application_queue.push(message);
+    }
+}
+
+void EPIRBProcessor::on_message(const Message* const message) {
+}
+
+int main() {
+    EventDispatcher event_dispatcher{std::make_unique<EPIRBProcessor>()};
+    event_dispatcher.run();
+    return 0;
+}
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2024 EPIRB Receiver Implementation
+ *
+ * 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 __PROC_EPIRB_H__
+#define __PROC_EPIRB_H__
+
+#include <cstdint>
+#include <cstddef>
+#include <array>
+#include <complex>
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+#include "channel_decimator.hpp"
+#include "matched_filter.hpp"
+#include "clock_recovery.hpp"
+#include "symbol_coding.hpp"
+#include "packet_builder.hpp"
+#include "baseband_packet.hpp"
+#include "message.hpp"
+#include "buffer.hpp"
+
+// Forward declarations for types only used as pointers/references
+class Message;
+namespace baseband {
+class Packet;
+}
+
+// EPIRB 406 MHz Emergency Position Indicating Radio Beacon
+// Signal characteristics:
+// - Frequency: 406.025 - 406.028 MHz (typically 406.028 MHz)
+// - Modulation: BPSK (Binary Phase Shift Keying)
+// - Data rate: 400 bps
+// - Encoding: Bi-phase L (Manchester)
+// - Transmission: Every 50 seconds ± 2.5 seconds
+// - Power: 5W ± 2dB
+// - Message length: 144 bits (including sync pattern)
+
+// Matched filter for BPSK demodulation at 400 bps
+// Using raised cosine filter taps optimized for 400 bps BPSK
+static constexpr std::array<std::complex<float>, 64> bpsk_taps = {{// Raised cosine filter coefficients for BPSK 400 bps
+                                                                   -5, -8, -12, -15, -17, -17, -15, -11,
+                                                                   -5, 2, 11, 20, 29, 37, 43, 47,
+                                                                   48, 46, 42, 35, 26, 16, 4, -8,
+                                                                   -21, -33, -44, -53, -59, -62, -62, -58,
+                                                                   -51, -41, -28, -13, 3, 19, 36, 51,
+                                                                   64, 74, 80, 82, 80, 74, 64, 51,
+                                                                   36, 19, 3, -13, -28, -41, -51, -58,
+                                                                   -62, -62, -59, -53, -44, -33, -21, -8}};
+
+class EPIRBProcessor : public BasebandProcessor {
+   public:
+    EPIRBProcessor();
+
+    void execute(const buffer_c8_t& buffer) override;
+
+    void on_message(const Message* const message) override;
+
+   private:
+    // EPIRB operates at 406 MHz with narrow bandwidth
+    static constexpr size_t baseband_fs = 2457600;
+    static constexpr uint32_t epirb_center_freq = 406028000;  // 406.028 MHz
+    static constexpr uint32_t symbol_rate = 400;              // 400 bps
+    static constexpr size_t decimation_factor = 64;           // Decimate to ~38.4kHz
+
+    std::array<complex16_t, 512> dst{};
+    const buffer_c16_t dst_buffer{
+        dst.data(),
+        dst.size()};
+
+    // Decimation chain for 406 MHz EPIRB signal processing
+    dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0{};
+    dsp::decimate::FIRC16xR16x32Decim8 decim_1{};
+
+    dsp::matched_filter::MatchedFilter mf{bpsk_taps, 2};
+
+    // Clock recovery for 400 bps symbol rate
+    // Sampling rate after decimation: ~38.4kHz
+    // Symbols per sample: 38400 / 400 = 96 samples per symbol
+    clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery{
+        38400,      // sampling_rate
+        400,        // symbol_rate (400 bps)
+        {0.0555f},  // error_filter coefficient
+        [this](const float symbol) { this->consume_symbol(symbol); }};
+
+    // Simple bi-phase L decoder state
+    uint_fast8_t last_symbol = 0;
+
+    // EPIRB packet structure:
+    // - Sync pattern: 000101010101... (15 bits)
+    // - Frame sync: 0111110 (7 bits)
+    // - Data: 112 bits
+    // - BCH error correction: 10 bits
+    // Total: 144 bits
+    PacketBuilder<BitPattern, BitPattern, BitPattern> packet_builder{
+        {0b010101010101010, 15, 1},  // Preamble pattern
+        {0b0111110, 7},              // Frame sync pattern
+        {0b0111110, 7},              // End pattern (same as sync for simplicity)
+        [this](const baseband::Packet& packet) {
+            this->payload_handler(packet);
+        }};
+
+    void consume_symbol(const float symbol);
+    void payload_handler(const baseband::Packet& packet);
+
+    // Statistics
+    uint32_t packets_received = 0;
+    Timestamp last_packet_timestamp{};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{
+        baseband_fs, this, baseband::Direction::Receive, /*auto_start*/ false};
+    RSSIThread rssi_thread{};
+};
+
+#endif /*__PROC_EPIRB_H__*/
@@ -24,6 +24,7 @@
 */

 #include "proc_fsk_rx.hpp"
+#include "dsp_decimate.hpp"

 #include "event_m4.hpp"

@@ -32,135 +33,253 @@
 #include <cstdint>
 #include <cstddef>

-using namespace std;
-using namespace dsp::decimate;
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif

-namespace {
-/* Count of bits that differ between the two values. */
-uint8_t diff_bit_count(uint32_t left, uint32_t right) {
-    uint32_t diff = left ^ right;
-    uint8_t count = 0;
-    for (size_t i = 0; i < sizeof(diff) * 8; ++i) {
-        if (((diff >> i) & 0x1) == 1)
-            ++count;
+float FSKRxProcessor::detect_peak_power(const buffer_c8_t& buffer, int N) {
+    int32_t power = 0;
+
+    // Initial window power
+    for (int i = 0; i < N; i++) {
+        int16_t i_sample = buffer.p[i].real();
+        int16_t q_sample = buffer.p[i].imag();
+        power += i_sample * i_sample + q_sample * q_sample;
    }

-    return count;
-}
-}  // namespace
+    power = power / N;

-/* AudioNormalizer ***************************************/
+    // Convert to dB over noise floor
+    float power_db = 10.0f * log10f((float)power / noise_floor);

-void AudioNormalizer::execute_in_place(const buffer_f32_t& audio) {
-    // Decay min/max every second (@24kHz).
-    if (counter_ >= 24'000) {
-        // 90% decay factor seems to work well.
-        // This keeps large transients from wrecking the filter.
-        max_ *= 0.9f;
-        min_ *= 0.9f;
-        counter_ = 0;
-        calculate_thresholds();
-    }
+    // If too weak, treat as no signal
+    if (power_db <= 0.0f) return 0;

-    counter_ += audio.count;
-
-    for (size_t i = 0; i < audio.count; ++i) {
-        auto& val = audio.p[i];
-
-        if (val > max_) {
-            max_ = val;
-            calculate_thresholds();
-        }
-        if (val < min_) {
-            min_ = val;
-            calculate_thresholds();
-        }
-
-        if (val >= t_hi_)
-            val = 1.0f;
-        else if (val <= t_lo_)
-            val = -1.0f;
-        else
-            val = 0.0;
-    }
+    return power_db;
 }

-void AudioNormalizer::calculate_thresholds() {
-    auto center = (max_ + min_) / 2.0f;
-    auto range = (max_ - min_) / 2.0f;
+void FSKRxProcessor::agc_correct_iq(const buffer_c8_t& buffer, int N, float measured_power) {
+    float power_db = 10.0f * log10f(measured_power / noise_floor);
+    float error_db = target_power_db - power_db;

-    // 10% off center force either +/-1.0f.
-    // Higher == larger dead zone.
-    // Lower == more false positives.
-    auto threshold = range * 0.1;
-    t_hi_ = center + threshold;
-    t_lo_ = center - threshold;
-}
-
-/* FSKRxProcessor ******************************************/
-
-void FSKRxProcessor::clear_data_bits() {
-    data = 0;
-    bit_count = 0;
-}
-
-void FSKRxProcessor::handle_sync(bool inverted) {
-    clear_data_bits();
-    has_sync_ = true;
-    inverted = inverted;
-    word_count = 0;
-}
-
-void FSKRxProcessor::process_bits(const buffer_c8_t& buffer) {
-    // Process all of the bits in the bits queue.
-    while (buffer.count > 0) {
-        // Wait until data_ is full.
-        if (bit_count < data_bit_count)
-            continue;
-
-        // Wait for the sync frame.
-        if (!has_sync_) {
-            if (diff_bit_count(data, sync_codeword) <= 2)
-                handle_sync(/*inverted=*/false);
-            else if (diff_bit_count(data, ~sync_codeword) <= 2)
-                handle_sync(/*inverted=*/true);
-            continue;
-        }
-    }
-}
-
-/* FSKRxProcessor ***************************************/
-
-FSKRxProcessor::FSKRxProcessor() {
-}
-
-void FSKRxProcessor::execute(const buffer_c8_t& buffer) {
-    if (!configured) {
+    if (error_db <= 0) {
        return;
    }

-    // Decimate by current decim 0 and decim 1.
+    float gain_scalar = powf(10.0f, error_db / 20.0f);
+
+    for (int i = 0; i < N; i++) {
+        buffer.p[i] = {(int8_t)(buffer.p[i].real() * gain_scalar), (int8_t)(buffer.p[i].imag() * gain_scalar)};
+    }
+}
+
+float FSKRxProcessor::get_phase_diff(const complex16_t& sample0, const complex16_t& sample1) {
+    // Calculate the phase difference between two samples.
+    float dI = sample1.real() * sample0.real() + sample1.imag() * sample0.imag();
+    float dQ = sample1.imag() * sample0.real() - sample1.real() * sample0.imag();
+    float phase_diff = atan2f(dQ, dI);
+
+    return phase_diff;
+}
+
+void FSKRxProcessor::demodulateFSKBits(const buffer_c16_t& decimator_out, int num_demod_byte) {
+    for (; packet_index < num_demod_byte; packet_index++) {
+        for (; bit_index < 8; bit_index++) {
+            if (samples_eaten >= (int)decimator_out.count) {
+                return;
+            }
+
+            float phaseSum = 0.0f;
+            for (int k = 0; k < SAMPLE_PER_SYMBOL - 1; ++k) {
+                float phase = get_phase_diff(
+                    decimator_out.p[samples_eaten + k],
+                    decimator_out.p[samples_eaten + k + 1]);
+                phaseSum += phase;
+            }
+
+            phaseSum /= (SAMPLE_PER_SYMBOL - 1);
+            phaseSum -= frequency_offset;
+
+            bool bitDecision = (phaseSum > 0.0f);
+
+            rb_buf[packet_index] |= (bitDecision << (7 - bit_index));
+
+            samples_eaten += SAMPLE_PER_SYMBOL;
+        }
+
+        bit_index = 0;
+    }
+}
+
+void FSKRxProcessor::resetPreambleTracking() {
+    frequency_offset = 0.0f;
+    frequency_offset_estimate = 0.0f;
+    phase_buffer_index = 0;
+    memset(phase_buffer, 0, sizeof(phase_buffer));
+}
+
+void FSKRxProcessor::resetBitPacketIndex() {
+    packet_index = 0;
+    bit_index = 0;
+}
+
+void FSKRxProcessor::resetToDefaultState() {
+    parseState = Parse_State_Wait_For_Peak;
+    peak_timeout = 0;
+    fskPacketData.power = 0.0f;
+    resetPreambleTracking();
+    resetBitPacketIndex();
+}
+
+void FSKRxProcessor::handlePreambleState(const buffer_c16_t& decimator_out) {
+    const uint32_t validPreamble = DEFAULT_PREAMBLE;
+    static uint32_t preambleValue = 0;
+
+    int hit_idx = -1;
+
+    for (; samples_eaten < (int)decimator_out.count; samples_eaten += SAMPLE_PER_SYMBOL) {
+        float phaseSum = 0.0f;
+
+        for (int j = 0; j < SAMPLE_PER_SYMBOL - 1; j++) {
+            phaseSum += get_phase_diff(decimator_out.p[samples_eaten + j], decimator_out.p[samples_eaten + j + 1]);
+        }
+
+        phase_buffer[phase_buffer_index] = phaseSum / (SAMPLE_PER_SYMBOL - 1);
+        phase_buffer_index = (phase_buffer_index + 1) % ROLLING_WINDOW;
+
+        bool bitDecision = (phaseSum > 0.0f);
+        preambleValue = (preambleValue << 1) | bitDecision;
+
+        int errors = __builtin_popcountl(preambleValue ^ validPreamble) & 0xFFFFFFFF;
+
+        if (errors == 0) {
+            hit_idx = samples_eaten + SAMPLE_PER_SYMBOL;
+            fskPacketData.syncWord = preambleValue;
+            fskPacketData.max_dB = max_dB;
+
+            for (int k = 0; k < ROLLING_WINDOW; k++) {
+                frequency_offset_estimate += phase_buffer[k];
+            }
+
+            frequency_offset = frequency_offset_estimate / ROLLING_WINDOW;
+
+            fskPacketData.frequency_offset_hz = (frequency_offset * demod_input_fs) / (2.0f * M_PI);
+
+            preambleValue = 0;
+            break;
+        }
+    }
+
+    if (hit_idx == -1) {
+        samples_eaten = samples_eaten;
+        return;
+    }
+
+    samples_eaten = hit_idx;
+    parseState = Parse_State_Sync;
+}
+
+void FSKRxProcessor::handleSyncWordState(const buffer_c16_t& decimator_out) {
+    const int syncword_bytes = 4;
+    const uint32_t validSyncWord = DEFAULT_SYNC_WORD;
+
+    if ((int)decimator_out.count - samples_eaten <= 0) {
+        return;
+    }
+
+    demodulateFSKBits(decimator_out, syncword_bytes);
+
+    if (packet_index < syncword_bytes || bit_index != 0) {
+        return;
+    }
+
+    uint32_t receivedSyncWord = (rb_buf[0] << 24) | (rb_buf[1] << 16) | (rb_buf[2] << 8) | rb_buf[3];
+
+    int errors = __builtin_popcountl(receivedSyncWord ^ validSyncWord) & 0xFFFFFFFF;
+
+    if (errors <= 3) {
+        fskPacketData.syncWord = receivedSyncWord;
+        parseState = Parse_State_PDU_Payload;
+        memset(fskPacketData.data, 0, sizeof(fskPacketData.data));
+    } else {
+        resetToDefaultState();
+    }
+
+    memset(rb_buf, 0, sizeof(rb_buf));
+    resetBitPacketIndex();
+}
+
+void FSKRxProcessor::handlePDUPayloadState(const buffer_c16_t& decimator_out) {
+    if ((int)decimator_out.count - samples_eaten <= 0) {
+        return;
+    }
+
+    demodulateFSKBits(decimator_out, NUM_DATA_BYTE);
+
+    if (packet_index < NUM_DATA_BYTE || bit_index != 0) {
+        return;
+    }
+
+    fskPacketData.dataLen = NUM_DATA_BYTE;
+
+    // Copy the decoded bits to the packet data
+    for (int i = 0; i < NUM_DATA_BYTE; i++) {
+        fskPacketData.data[i] |= rb_buf[i];
+    }
+
+    FSKRxPacketMessage data_message{&fskPacketData};
+    shared_memory.application_queue.push(data_message);
+
+    memset(rb_buf, 0, sizeof(rb_buf));
+
+    resetToDefaultState();
+}
+
+void FSKRxProcessor::execute(const buffer_c8_t& buffer) {
+    if (!configured || parseState == Parse_State_Parsing_Data) return;
+
    const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
    const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);

    feed_channel_stats(decim_1_out);

-    spectrum_samples += decim_1_out.count;
+    samples_eaten = 0;

-    if (spectrum_samples >= spectrum_interval_samples) {
-        spectrum_samples -= spectrum_interval_samples;
-        channel_spectrum.feed(decim_1_out, channel_filter_low_f,
-                              channel_filter_high_f, channel_filter_transition);
-    }
+    while ((int)decim_1_out.count - samples_eaten > 0) {
+        if ((parseState == Parse_State_Wait_For_Peak) || (parseState == Parse_State_Preamble)) {
+            float power = detect_peak_power(buffer, buffer.count);

-    // process_bits();
+            if (power) {
+                parseState = Parse_State_Preamble;
+                agc_power = power;
+                fskPacketData.power = power;
+            } else {
+                break;
+            }
+        }

-    // Update the status.
-    samples_processed += buffer.count;
+        if (agc_power) {
+            agc_correct_iq(buffer, buffer.count, agc_power);
+        }

-    if (samples_processed >= stat_update_threshold) {
-        // send_packet(data);
-        samples_processed -= stat_update_threshold;
+        if (parseState == Parse_State_Preamble) {
+            peak_timeout++;
+
+            // 960,000 fs / 2048 samples = 468.75 Hz, so 55 calls is about 0.053 seconds before timeout.
+            if (peak_timeout == 4) {
+                resetToDefaultState();
+            } else {
+                handlePreambleState(decim_1_out);
+            }
+        }
+
+        if (parseState == Parse_State_Sync) {
+            handleSyncWordState(decim_1_out);
+        }
+
+        if (parseState == Parse_State_PDU_Payload) {
+            handlePDUPayloadState(decim_1_out);
+        }
    }
 }

@@ -171,7 +290,7 @@ void FSKRxProcessor::on_message(const Message* const message) {
            break;
        case Message::ID::UpdateSpectrum:
        case Message::ID::SpectrumStreamingConfig:
-            channel_spectrum.on_message(message);
+            // channel_spectrum.on_message(message);
            break;

        case Message::ID::SampleRateConfig:
@@ -179,7 +298,7 @@ void FSKRxProcessor::on_message(const Message* const message) {
            break;

        case Message::ID::CaptureConfig:
-            capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
+            // capture_config(*reinterpret_cast<const CaptureConfigMessage*>(message));
            break;

        default:
@@ -188,83 +307,65 @@ void FSKRxProcessor::on_message(const Message* const message) {
 }

 void FSKRxProcessor::configure(const FSKRxConfigureMessage& message) {
-    // Extract message variables.
-    deviation = message.deviation;
-    channel_decimation = message.channel_decimation;
-    // channel_filter_taps = message.channel_filter;
-
-    channel_spectrum.set_decimation_factor(1);
-}
-
-void FSKRxProcessor::capture_config(const CaptureConfigMessage& message) {
-    if (message.config) {
-        audio_output.set_stream(std::make_unique<StreamInput>(message.config));
-    } else {
-        audio_output.set_stream(nullptr);
-    }
+    SAMPLE_PER_SYMBOL = message.samplesPerSymbol;
+    DEFAULT_SYNC_WORD = message.syncWord;
+    NUM_SYNC_WORD_BYTE = message.syncWordLength;
+    DEFAULT_PREAMBLE = message.preamble;
+    NUM_PREAMBLE_BYTE = message.preambleLength;
+    NUM_DATA_BYTE = message.numDataBytes;
 }

 void FSKRxProcessor::sample_rate_config(const SampleRateConfigMessage& message) {
    const auto sample_rate = message.sample_rate;

-    // The actual sample rate is the requested rate * the oversample rate.
-    // See oversample.hpp for more details on oversampling.
    baseband_fs = sample_rate * toUType(message.oversample_rate);
    baseband_thread.set_sampling_rate(baseband_fs);

-    // TODO: Do we need to use the taps that the decimators get configured with?
    channel_filter_low_f = taps_200k_decim_1.low_frequency_normalized * sample_rate;
    channel_filter_high_f = taps_200k_decim_1.high_frequency_normalized * sample_rate;
    channel_filter_transition = taps_200k_decim_1.transition_normalized * sample_rate;

-    // Compute the scalar that corrects the oversample_rate to be x8 when computing
-    // the spectrum update interval. The original implementation only supported x8.
-    // TODO: Why is this needed here but not in proc_replay? There must be some other
-    // assumption about x8 oversampling in some component that makes this necessary.
    const auto oversample_correction = toUType(message.oversample_rate) / 8.0;

    // The spectrum update interval controls how often the waterfall is fed new samples.
    spectrum_interval_samples = sample_rate / (spectrum_rate_hz * oversample_correction);
    spectrum_samples = 0;

-    // For high sample rates, the M4 is busy collecting samples so the
-    // waterfall runs slower. Reduce the update interval so it runs faster.
-    // NB: Trade off: looks nicer, but more frequent updates == more CPU.
    if (sample_rate >= 1'500'000)
        spectrum_interval_samples /= (sample_rate / 750'000);

    switch (message.oversample_rate) {
        case OversampleRate::x4:
            // M4 can't handle 2 decimation passes for sample rates needing x4.
-            decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
+            decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
            decim_1.set<NoopDecim>();
            break;

        case OversampleRate::x8:
            // M4 can't handle 2 decimation passes for sample rates <= 600k.
            if (message.sample_rate < 600'000) {
-                decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
-                decim_1.set<FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
+                decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
+                decim_1.set<dsp::decimate::FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
            } else {
                // Using 180k taps to provide better filtering with a single pass.
-                decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_180k_wfm_decim_0.taps);
+                decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim8>().configure(taps_180k_wfm_decim_0.taps);
                decim_1.set<NoopDecim>();
            }
            break;

        case OversampleRate::x16:
-            decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
-            decim_1.set<FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
+            decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
+            decim_1.set<dsp::decimate::FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
            break;

        case OversampleRate::x32:
-            decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
-            decim_1.set<FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
+            decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
+            decim_1.set<dsp::decimate::FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
            break;

        case OversampleRate::x64:
-            decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
-            decim_1.set<FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
+            decim_0.set<dsp::decimate::FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
+            decim_1.set<dsp::decimate::FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
            break;

        default:
@@ -282,33 +383,12 @@ void FSKRxProcessor::sample_rate_config(const SampleRateConfigMessage& message)
    // size_t channel_filter_input_fs = decim_1_output_fs;
    // size_t channel_filter_output_fs = channel_filter_input_fs / channel_decimation;

-    size_t demod_input_fs = decim_1_output_fs;
-
-    send_packet((uint32_t)demod_input_fs);
+    demod_input_fs = decim_1_output_fs;

    // Set ready to process data.
    configured = true;
 }

-void FSKRxProcessor::flush() {
-    // word_extractor.flush();
-}
-
-void FSKRxProcessor::reset() {
-    clear_data_bits();
-    has_sync_ = false;
-    inverted = false;
-    word_count = 0;
-
-    samples_processed = 0;
-}
-
-void FSKRxProcessor::send_packet(uint32_t data) {
-    data_message.is_data = true;
-    data_message.value = data;
-    shared_memory.application_queue.push(data_message);
-}
-
 /* main **************************************************/

 int main() {
@@ -30,7 +30,6 @@

 #include "dsp_decimate.hpp"
 #include "dsp_demodulate.hpp"
-#include "dsp_iir_config.hpp"
 #include "dsp_fir_taps.hpp"

 #include "spectrum_collector.hpp"
@@ -46,21 +45,6 @@
 #include <cstdint>
 #include <functional>

-/* Normalizes audio stream to +/-1.0f */
-class AudioNormalizer {
-   public:
-    void execute_in_place(const buffer_f32_t& audio);
-
-   private:
-    void calculate_thresholds();
-
-    uint32_t counter_ = 0;
-    float min_ = 99.0f;
-    float max_ = -99.0f;
-    float t_hi_ = 1.0;
-    float t_lo_ = 1.0;
-};
-
 /* A decimator that just returns the source buffer. */
 class NoopDecim {
   public:
@@ -111,44 +95,92 @@ class MultiDecimator {

 class FSKRxProcessor : public BasebandProcessor {
   public:
-    FSKRxProcessor();
    void execute(const buffer_c8_t& buffer) override;
    void on_message(const Message* const message) override;

   private:
-    size_t baseband_fs = 1024000;  // aka: sample_rate
+    static constexpr int ROLLING_WINDOW{32};
+    static constexpr uint16_t MAX_BUFFER_SIZE{512};
+
+    enum Parse_State {
+        Parse_State_Wait_For_Peak = 0,
+        Parse_State_Preamble,
+        Parse_State_Sync,
+        Parse_State_PDU_Payload,
+        Parse_State_Parsing_Data
+    };
+
+    size_t baseband_fs = 960000;
    uint8_t stat_update_interval = 10;
    uint32_t stat_update_threshold = baseband_fs / stat_update_interval;
-    static constexpr auto spectrum_rate_hz = 50.0f;
+
+    float detect_peak_power(const buffer_c8_t& buffer, int N);
+    void agc_correct_iq(const buffer_c8_t& buffer, int N, float measured_power);
+    float get_phase_diff(const complex16_t& sample0, const complex16_t& sample1);
+    void demodulateFSKBits(const buffer_c16_t& decimator_out, int num_demod_byte);
+    void resetPreambleTracking();
+    void resetBitPacketIndex();
+    void resetToDefaultState();
+
+    void handlePreambleState(const buffer_c16_t& decimator_out);
+    void handleSyncWordState(const buffer_c16_t& decimator_out);
+    void handlePDUPayloadState(const buffer_c16_t& decimator_out);

    void configure(const FSKRxConfigureMessage& message);
-    void capture_config(const CaptureConfigMessage& message);
    void sample_rate_config(const SampleRateConfigMessage& message);
-    void flush();
-    void reset();
-    void send_packet(uint32_t data);
-    void process_bits(const buffer_c8_t& buffer);

-    void clear_data_bits();
-    void handle_sync(bool inverted);
-
-    /* Returns true if the batch has as sync frame. */
-    bool has_sync() const { return has_sync_; }
-
-    /* Set once app is ready to receive messages. */
-    bool configured = false;
-
-    /* Buffer for decimated IQ data. */
-    std::array<complex16_t, 512> dst{};
+    std::array<complex16_t, MAX_BUFFER_SIZE> dst{};
    const buffer_c16_t dst_buffer{
        dst.data(),
        dst.size()};

-    /* Buffer for demodulated audio. */
-    std::array<float, 16> audio{};
-    const buffer_f32_t audio_buffer{audio.data(), audio.size()};
+    uint8_t rb_buf[MAX_BUFFER_SIZE];
+
+    dsp::demodulate::FM demod{};
+    int rb_head{-1};
+    int32_t g_threshold{0};
+    uint8_t channel_number{0};
+
+    uint16_t process = 0;
+
+    bool configured{false};
+    FskPacketData fskPacketData{};
+
+    Parse_State parseState{Parse_State_Wait_For_Peak};
+
+    int sample_idx{0};
+    int samples_eaten{0};
+
+    int32_t max_dB{0};
+    int8_t real{0};
+    int8_t imag{0};
+
+    uint16_t peak_timeout{0};
+    float noise_floor{12.0};  // Using LNA 40 and VGA 20. 10.0 was 40/0 ratio.
+    float target_power_db{5.0};
+    float agc_power{0.0f};
+
+    float frequency_offset_estimate{0.0f};
+    float frequency_offset{0.0f};
+    float phase_buffer[ROLLING_WINDOW] = {0.0f};
+    int phase_buffer_index = 0;
+
+    uint16_t packet_index{0};
+    uint8_t bit_index{0};
+    size_t demod_input_fs{0};
+
+    uint8_t SAMPLE_PER_SYMBOL{1};
+    uint32_t DEFAULT_PREAMBLE{0xAAAAAAAA};
+    uint32_t DEFAULT_SYNC_WORD{0xFFFFFFFF};
+    uint8_t NUM_SYNC_WORD_BYTE{4};
+    uint8_t NUM_PREAMBLE_BYTE{4};
+    uint16_t NUM_DATA_BYTE = MAX_BUFFER_SIZE - NUM_SYNC_WORD_BYTE - NUM_PREAMBLE_BYTE;
+
+    SpectrumCollector channel_spectrum{};
+    size_t spectrum_interval_samples = 0;
+    size_t spectrum_samples = 0;
+    static constexpr auto spectrum_rate_hz = 50.0f;

-    /* The actual type will be configured depending on the sample rate. */
    MultiDecimator<
        dsp::decimate::FIRC8xR16x24FS4Decim4,
        dsp::decimate::FIRC8xR16x24FS4Decim8>
@@ -159,9 +191,7 @@ class FSKRxProcessor : public BasebandProcessor {
        NoopDecim>
        decim_1{};

-    /* Filter to 24kHz and demodulate. */
    dsp::decimate::FIRAndDecimateComplex channel_filter{};
-    size_t deviation = 3750;
    // fir_taps_real<32> channel_filter_taps = 0;
    size_t channel_decimation = 2;
    int32_t channel_filter_low_f = 0;
@@ -172,51 +202,6 @@ class FSKRxProcessor : public BasebandProcessor {
    FMSquelch squelch{};
    uint64_t squelch_history = 0;

-    // /* LPF to reduce noise. POCSAG supports 2400 baud, but that falls
-    //  * nicely into the transition band of this 1800Hz filter.
-    //  * scipy.signal.butter(2, 1800, "lowpass", fs=24000, analog=False) */
-    // IIRBiquadFilter lpf{{{0.04125354f, 0.082507070f, 0.04125354f},
-    //                      {1.00000000f, -1.34896775f, 0.51398189f}}};
-
-    /* Attempts to de-noise and normalize signal. */
-    AudioNormalizer normalizer{};
-
-    /* Handles writing audio stream to hardware. */
-    AudioOutput audio_output{};
-
-    /* Holds the data sent to the app. */
-    AFSKDataMessage data_message{false, 0};
-
-    /* Used to keep track of how many samples were processed
-     * between status update messages. */
-    uint32_t samples_processed = 0;
-
-    /* Number of bits in 'data_' member. */
-    static constexpr uint8_t data_bit_count = sizeof(uint32_t) * 8;
-
-    /* Sync frame codeword. */
-    static constexpr uint32_t sync_codeword = 0x12345678;
-
-    /* When true, sync frame has been received. */
-    bool has_sync_ = false;
-
-    /* When true, bit vales are flipped in the codewords. */
-    bool inverted = false;
-
-    uint32_t data = 0;
-    uint8_t bit_count = 0;
-    uint8_t word_count = 0;
-
-    /* LPF to reduce noise. POCSAG supports 2400 baud, but that falls
-     * nicely into the transition band of this 1800Hz filter.
-     * scipy.signal.butter(2, 1800, "lowpass", fs=24000, analog=False) */
-    IIRBiquadFilter lpf{{{0.04125354f, 0.082507070f, 0.04125354f},
-                         {1.00000000f, -1.34896775f, 0.51398189f}}};
-
-    SpectrumCollector channel_spectrum{};
-    size_t spectrum_interval_samples = 0;
-    size_t spectrum_samples = 0;
-
    /* NB: Threads should be the last members in the class definition. */
    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
    RSSIThread rssi_thread{};
@@ -1649,4 +1649,36 @@ static constexpr fir_taps_real<24> taps_BTLE_2M_PHY_decim_0 = {

    }},
 };
+
+// Tested to be better at capturing both 4.0 and 5.0 device. Better attenuation at channel end.
+static constexpr fir_taps_real<24> taps_BTLE_Dual_PHY = {
+    .low_frequency_normalized = -750000.0f / 4000000.0f,
+    .high_frequency_normalized = 750000.0f / 4000000.0f,
+    .transition_normalized = 250000.0f / 4000000.0f,
+    .taps = {{3,
+              -5,
+              -97,
+              -144,
+              317,
+              1099,
+              396,
+              -2887,
+              -4814,
+              1912,
+              18134,
+              32767,
+              32767,
+              18134,
+              1912,
+              -4814,
+              -2887,
+              396,
+              1099,
+              317,
+              -144,
+              -97,
+              -5,
+              3}},
+};
+
 #endif /*__DSP_FIR_TAPS_H__*/
@@ -134,6 +134,8 @@ class Message {
        NoaaAptRxConfigure = 77,
        NoaaAptRxStatusData = 78,
        NoaaAptRxImageData = 79,
+        FSKPacket = 80,
+        EPIRBPacket = 81,
        MAX
    };

@@ -338,6 +340,17 @@ class AISPacketMessage : public Message {
    baseband::Packet packet;
 };

+class EPIRBPacketMessage : public Message {
+   public:
+    constexpr EPIRBPacketMessage(
+        const baseband::Packet& packet)
+        : Message{ID::EPIRBPacket},
+          packet{packet} {
+    }
+
+    baseband::Packet packet;
+};
+
 class TPMSPacketMessage : public Message {
   public:
    constexpr TPMSPacketMessage(
@@ -452,6 +465,17 @@ struct BlePacketData {
    uint8_t dataLen;
 };

+struct FskPacketData {
+    int8_t real;
+    int8_t imag;
+    int max_dB;
+    uint8_t data[512];
+    uint16_t dataLen;
+    uint64_t syncWord;
+    float power;
+    float frequency_offset_hz;
+};
+
 class BLEPacketMessage : public Message {
   public:
    constexpr BLEPacketMessage(
@@ -463,6 +487,17 @@ class BLEPacketMessage : public Message {
    BlePacketData* packet{nullptr};
 };

+class FSKRxPacketMessage : public Message {
+   public:
+    constexpr FSKRxPacketMessage(
+        FskPacketData* packet)
+        : Message{ID::FSKPacket},
+          packet{packet} {
+    }
+
+    FskPacketData* packet{nullptr};
+};
+
 class CodedSquelchMessage : public Message {
   public:
    constexpr CodedSquelchMessage(
@@ -1127,24 +1162,27 @@ class FSKConfigureMessage : public Message {
 class FSKRxConfigureMessage : public Message {
   public:
    constexpr FSKRxConfigureMessage(
-        const fir_taps_real<24> decim_0_filter,
-        const fir_taps_real<32> decim_1_filter,
-        const fir_taps_real<32> channel_filter,
-        const size_t channel_decimation,
-        const size_t deviation)
+        const uint8_t samplesPerSymbol,
+        const uint32_t syncWord,
+        const uint8_t syncWordLength,
+        const uint32_t preamble,
+        const uint8_t preambleLength,
+        const uint16_t numDataBytes)
        : Message{ID::FSKRxConfigure},
-          decim_0_filter(decim_0_filter),
-          decim_1_filter(decim_1_filter),
-          channel_filter(channel_filter),
-          channel_decimation{channel_decimation},
-          deviation{deviation} {
+          samplesPerSymbol(samplesPerSymbol),
+          syncWord(syncWord),
+          syncWordLength(syncWordLength),
+          preamble(preamble),
+          preambleLength(preambleLength),
+          numDataBytes(numDataBytes) {
    }

-    const fir_taps_real<24> decim_0_filter;
-    const fir_taps_real<32> decim_1_filter;
-    const fir_taps_real<32> channel_filter;
-    const size_t channel_decimation;
-    const size_t deviation;
+    const uint8_t samplesPerSymbol;
+    const uint32_t syncWord;
+    const uint8_t syncWordLength;
+    const uint32_t preamble;
+    const uint8_t preambleLength;
+    const uint16_t numDataBytes;
 };

 class POCSAGConfigureMessage : public Message {
@@ -110,7 +110,7 @@ GPS_data Packet::get_GPS_data() const {
        result.alt = reader_bi_m.read(8 * 8, 24) / 100.0;       // <|
        result.lat = reader_bi_m.read(28 * 8, 32) / 1000000.0;  // <| Inspired by https://raw.githubusercontent.com/projecthorus/radiosonde_auto_rx/master/demod/mod/m20mod.c
        result.lon = reader_bi_m.read(32 * 8, 32) / 1000000.0;  // <|
-    } else if (type_ == Type::Vaisala_RS41_SG) {
+    } else if (type_ == Type::Vaisala_RS41_SG && crc16rs41(block_gpspos)) {
        uint8_t XYZ_bytes[4];
        int32_t XYZ;  // 32bit
        double_t X[3];
@@ -245,7 +245,7 @@ temp_humid Packet::get_temp_humid() const {
        }
    }

-    if (type_ == Type::Vaisala_RS41_SG && crc_ok_RS41())  // Only process if packet is healthy
+    if (type_ == Type::Vaisala_RS41_SG && crc16rs41(block_meas))  // Only process if packet is healthy
    {
        // memset(calfrchk, 0, 51); // is this necessary ? only if the sondeID changes (new sonde)
        // original code from https://github.com/rs1729/RS/blob/master/rs41/rs41ptu.c
@@ -371,9 +371,11 @@ std::string Packet::serial_number() const {
        uint8_t achar;
        for (uint8_t i = 0; i < 8; i++) {  // euquiq: Serial ID is 8 bytes long, each byte a char
            achar = vaisala_descramble(pos_SondeID + i);
-            if (achar < 32 || achar > 126)
-                return "?";  // Maybe there are ids with less than 8 bytes and this is not OK.
-            serial_id += (char)achar;
+            if (achar < 32 || achar > 126) {
+                serial_id += "?";  // Maybe there are ids with less than 8 bytes and this is not OK.
+            } else {
+                serial_id += (char)achar;
+            }
        }
        return serial_id;
    } else {
@@ -414,15 +416,9 @@ bool Packet::crc_ok() const {
 //  2 bytes CRC16 over the data.
 bool Packet::crc_ok_RS41() const  // check CRC for the data blocks we need
 {
-    if (!crc16rs41(block_status))
-        return false;
-
-    if (!crc16rs41(block_gpspos))
-        return false;
-
-    if (!crc16rs41(block_meas))
-        return false;
-
+    if (!crc16rs41(block_status)) return false;
+    if (!crc16rs41(block_gpspos)) return false;
+    if (!crc16rs41(block_meas)) return false;
    return true;
 }

@@ -451,8 +447,7 @@ bool Packet::crc16rs41(uint32_t field_start) const {
        }
    }
    // Check calculated CRC against packet's one
-    pos++;
-    int crcok = vaisala_descramble(pos) | (vaisala_descramble(pos + 1) << 8);
+    int crcok = vaisala_descramble(field_start + 2 + length) | (vaisala_descramble(field_start + 2 + length + 1) << 8);
    if (crcok != rem)
        return false;
    return true;
@@ -87,6 +87,7 @@ constexpr image_tag_t image_tag_am_audio{'P', 'A', 'M', 'A'};
 constexpr image_tag_t image_tag_am_tv{'P', 'A', 'M', 'T'};
 constexpr image_tag_t image_tag_capture{'P', 'C', 'A', 'P'};
 constexpr image_tag_t image_tag_ert{'P', 'E', 'R', 'T'};
+constexpr image_tag_t image_tag_epirb_rx{'P', 'E', 'P', 'I'};
 constexpr image_tag_t image_tag_nfm_audio{'P', 'N', 'F', 'M'};
 constexpr image_tag_t image_tag_pocsag{'P', 'P', 'O', 'C'};
 constexpr image_tag_t image_tag_pocsag2{'P', 'P', 'O', '2'};
@@ -98,6 +98,7 @@ for external_image_prefix in sys.argv[4:]:

 	# COMMAND ${CMAKE_OBJCOPY} -v -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}_ext_pacman.bin --only-section=.external_app_pacman
 	himg = "{}/external_app_{}.himg".format(binary_dir, external_image_prefix)
+	print("Creating external application image for {}".format(external_image_prefix))
 	subprocess.run([cmake_objcopy, "-v", "-O", "binary", "{}/application.elf".format(binary_dir), himg, "--only-section=.external_app_{}".format(external_image_prefix)])

 	external_application_image = read_image(himg)
@@ -1,464 +1,464 @@
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Author	SHA1	Message	Date
Totoo	2d2d9223f2	better rs41 (#2757 )	2025-08-15 16:24:07 +02:00
zxkmm	6e33007cb6	move soundbrd app external (#2756 )	2025-08-15 13:31:18 +02:00
zxkmm	3f7b59f27e	frequency keypad opt (#2755 ) * init * revert changes that caused by batch replace * revert changes that caused by batch replace * revert changes that caused by batch replace * revert submodu;e	2025-08-13 14:25:21 +02:00
Arne Luehrs	375d1ad54e	Implementation of EPIRB receiver (#2754 ) * Implementation of EPIRB receiver * Baseband processing of EPIRB signal * UI to ddecode and display EPIRB message with display on a map * External application * External proc element * Delete CLAUDE.md	2025-08-13 14:24:18 +02:00
Netro	6b05878532	BLE RX/TX Changes (#2752 ) * Work on BLE Rx Tx improvements. * Working on compile size. * cleanup * Formatting * Fixes * More Improvements + Custom Parsing for Tags * Moving ERT to external apps. * Fix Icon.	2025-08-11 07:42:58 +02:00
RocketGod	3983749f11	Update ui_jammer.cpp (#2747 ) Update warning to reflect actual range limit of bandwidth.	2025-07-30 20:08:00 +02:00
Totoo	28e2f770e5	fix miss (#2738 )	2025-07-12 13:33:22 +02:00
gullradriel	4c5275247e	update version (#2735 ) Co-authored-by: gullradriel <gullradriel@no-mail.com>	2025-07-11 15:57:04 +02:00
gullradriel	a0185d28eb	update submodule (#2734 ) Co-authored-by: gullradriel <gullradriel@no-mail.com>	2025-07-09 21:33:38 +02:00
RocketGod	2500df310f	Add radio settings, new app icon, and other UI improvements (#2732 )	2025-07-03 11:03:51 -07:00
Totoo	54f9ff116b	AIS map improv (#2725 ) * AIS map improv * format code mismatch with vc	2025-06-29 22:47:18 +02:00
Totoo	47f231ad63	Add blue bar to subghzd+weather (#2724 )	2025-06-29 19:31:05 +08:00
Netro	f90d3fabce	Adding simple FSK Rx Processor. Can be used with New Apps. (#2716 ) * Work to allow for unique beacon parsing functions. * Fixing pull. * Changes. * Formatting. * Fix Copyright * Update firmware/application/apps/ble_rx_app.cpp Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update firmware/baseband/proc_btlerx.cpp Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * PR suggestions. * Fix String. * FSK Rx Improvements. Works for my custom protocol. * Fix buffer size. * Refactor * Formatting. * Formatting. * Fixing compiling, and BLE Rx UI/Performance. * More improvements. * Fixing stuck state. * More stuck parsing fix. * Combining PR changes. * Improvements from previous PR. * Fix dbM calculation relative to device RSSI. * Formatting. --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: TJ <tj.baginski@cognosos.com>	2025-06-29 01:02:12 +02:00
RocketGod	4e276cdc71	Battleship (#2720 ) * Made the Battleship 2P 2PP game - FSK is wip * Using POCSAG	2025-06-28 20:02:29 +02:00