Create the Shopping Cart Lock app

firmware/application/external/external.cmake

@@ -106,7 +106,10 @@ set(EXTCPPSRC
 	#acars
 	external/acars_rx/main.cpp
 	external/acars_rx/acars_app.cpp
-
+
+	#shoppingcart_lock
+	external/shoppingcart_lock/main.cpp
+	external/shoppingcart_lock/shoppingcart_lock.cpp	
 )
 
 set(EXTAPPLIST
@@ -135,4 +138,5 @@ set(EXTAPPLIST
 	sstvtx
 	random_password
 	#acars_rx
+	shoppingcart_lock
 )

firmware/application/external/external.ld

@@ -48,6 +48,7 @@ MEMORY
     ram_external_app_sstvtx(rwx) : org = 0xADC70000, len = 32k
     ram_external_app_random_password(rwx) : org = 0xADC80000, len = 32k
     ram_external_app_acars_rx(rwx) : org = 0xADC90000, len = 32k
+    ram_external_app_shoppingcart_lock(rwx) : org = 0xADCA0000, len = 32k    
 }
 
 SECTIONS
@@ -166,7 +167,6 @@ SECTIONS
         *(*ui*external_app*tpmsrx*);
     } > ram_external_app_tpmsrx
 
-
    .external_app_protoview : ALIGN(4) SUBALIGN(4)
     {
         KEEP(*(.external_app.app_protoview.application_information));
@@ -204,6 +204,11 @@ SECTIONS
         *(*ui*external_app*acars_rx*);
     } > ram_external_app_acars_rx
 
+   .external_app_shoppingcart_lock : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_shoppingcart_lock.application_information));
+        *(*ui*external_app*shoppingcart_lock*);
+    } > ram_external_app_shoppingcart_lock
 
 
 

firmware/application/external/shoppingcart_lock/main.cpp

@@ -0,0 +1,63 @@
+
+// RocketGod's Shopping Cart Lock app
+// https://betaskynet.com
+#include "ui.hpp"
+#include "shoppingcart_lock.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::shoppingcart_lock {
+void initialize_app(NavigationView& nav) {
+    baseband::run_image(portapack::spi_flash::image_tag_audio_tx);
+    nav.push<ShoppingCartLock>();
+}
+}  // namespace ui::external_app::shoppingcart_lock
+
+extern "C" {
+
+__attribute__((section(".external_app.app_shoppingcart_lock.application_information"), used)) application_information_t _application_information_shoppingcart_lock = {
+    (uint8_t*)0x00000000,
+    ui::external_app::shoppingcart_lock::initialize_app,
+    CURRENT_HEADER_VERSION,
+    VERSION_MD5,
+    "Cart Lock",
+    {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x7E,
+        0x7E,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x7E,
+        0x81,
+        0x81,
+        0x7E,
+        0x00,
+        0x00,
+        0x00,
+        0x7E,
+        0x81,
+        0x81,
+        0x81,
+        0x81,
+        0x7E,
+        0x00,
+    },
+    ui::Color::red().v,
+    app_location_t::UTILITIES,
+    {'P', 'A', 'T', 'X'},
+    0x00000000,
+};
+}

firmware/application/external/shoppingcart_lock/shoppingcart_lock.cpp

@@ -0,0 +1,235 @@
+// RocketGod's Shopping Cart Lock app
+// https://betaskynet.com
+#include "shoppingcart_lock.hpp"
+
+using namespace portapack;
+
+namespace ui::external_app::shoppingcart_lock {
+
+void ShoppingCartLock::log_event(const std::string& message) {
+    static const size_t MAX_LOG_LINES = 50;
+    static std::vector<std::string> message_history;
+
+    message_history.push_back(message);
+    if (message_history.size() > MAX_LOG_LINES) {
+        message_history.erase(message_history.begin());
+        menu_view.clear();
+        for (const auto& msg : message_history) {
+            menu_view.add_item({msg,
+                                ui::Theme::getInstance()->fg_green->foreground,
+                                nullptr,
+                                [](KeyEvent) {}});
+        }
+    } else {
+        menu_view.add_item({message,
+                            ui::Theme::getInstance()->fg_green->foreground,
+                            nullptr,
+                            [](KeyEvent) {}});
+    }
+
+    menu_view.set_highlighted(menu_view.item_count() - 1);
+}
+
+bool ShoppingCartLock::is_active() const {
+    return (bool)replay_thread;
+}
+
+void ShoppingCartLock::focus() {
+    menu_view.focus();
+}
+
+void ShoppingCartLock::stop() {
+    log_event(">>> STOP_SEQUENCE_START");
+    if (is_active()) {
+        log_event("... Resetting Replay Thread");
+        replay_thread.reset();
+    }
+    log_event("... Stopping Audio Output");
+    audio::output::stop();
+
+    log_event("... Resetting State Variables");
+    transmitter_model.disable();
+    ready_signal = false;
+    thread_sync_complete = false;
+    looping = false;
+    current_file = "";
+    log_event("<<< STOP_SEQUENCE_COMPLETE");
+}
+
+std::string ShoppingCartLock::list_wav_files() {
+    log_event(">>> WAV_SCAN_START");
+    auto reader = std::make_unique<WAVFileReader>();
+    bool found_lock = false;
+    bool found_unlock = false;
+
+    for (const auto& entry : std::filesystem::directory_iterator(wav_dir, u"*")) {
+        if (std::filesystem::is_regular_file(entry.status())) {
+            auto filename = entry.path().filename().string();
+            std::transform(filename.begin(), filename.end(), filename.begin(), ::tolower);
+
+            if (filename == shoppingcart_lock_file || filename == shoppingcart_unlock_file) {
+                std::string file_path = (wav_dir / filename).string();
+                if (reader->open(file_path)) {
+                    if (filename == shoppingcart_lock_file) {
+                        found_lock = true;
+                        log_event("... Found: " + shoppingcart_lock_file);
+                        log_event("Sample Rate: " + std::to_string(reader->sample_rate()));
+                        log_event("Channels: " + std::to_string(reader->channels()));
+                        log_event("Bits/Sample: " + std::to_string(reader->bits_per_sample()));
+                    }
+                    if (filename == shoppingcart_unlock_file) {
+                        found_unlock = true;
+                        log_event("... Found: " + shoppingcart_unlock_file);
+                        log_event("Sample Rate: " + std::to_string(reader->sample_rate()));
+                        log_event("Channels: " + std::to_string(reader->channels()));
+                        log_event("Bits/Sample: " + std::to_string(reader->bits_per_sample()));
+                    }
+                }
+            }
+
+            if (found_lock && found_unlock) {
+                break;
+            }
+        }
+    }
+
+    if (!found_lock || !found_unlock) {
+        log_event("!!! Missing Required Files:");
+        if (!found_lock) log_event("!!! Missing: " + shoppingcart_lock_file);
+        if (!found_unlock) log_event("!!! Missing: " + shoppingcart_unlock_file);
+        menu_view.hidden(true);
+        text_empty.hidden(false);
+    } else {
+        log_event("... All Required Files Found");
+        menu_view.hidden(false);
+        text_empty.hidden(true);
+    }
+
+    log_event("<<< WAV_SCAN_COMPLETE");
+    return found_lock && found_unlock ? "Required WAV files found" : "Missing required WAV files";
+}
+
+void ShoppingCartLock::wait_for_thread() {
+    uint32_t timeout = 100;
+    while (!ready_signal && timeout > 0) {
+        chThdYield();
+        timeout--;
+    }
+}
+
+void ShoppingCartLock::restart_playback() {
+    auto reader = std::make_unique<WAVFileReader>();
+    std::string file_path = (wav_dir / current_file).string();
+
+    if (!reader->open(file_path)) return;
+
+    replay_thread = std::make_unique<ReplayThread>(
+        std::move(reader),
+        BUFFER_SIZE,
+        NUM_BUFFERS,
+        &ready_signal,
+        [](uint32_t return_code) {
+            ReplayThreadDoneMessage message{return_code};
+            EventDispatcher::send_message(message);
+        });
+
+    log_event(">> SENDING <<");
+    audio::output::start();
+    transmitter_model.enable();
+}
+
+void ShoppingCartLock::play_audio(const std::string& filename, bool loop) {
+    auto reader = std::make_unique<WAVFileReader>();
+    stop();
+
+    std::string file_path = (wav_dir / filename).string();
+    if (!reader->open(file_path)) {
+        nav_.display_modal("Error", "Cannot open " + filename);
+        return;
+    }
+
+    const uint32_t wav_sample_rate = reader->sample_rate();
+    const uint16_t wav_bits_per_sample = reader->bits_per_sample();
+
+    current_file = filename;
+    looping = loop;
+
+    replay_thread = std::make_unique<ReplayThread>(
+        std::move(reader),
+        BUFFER_SIZE,
+        NUM_BUFFERS,
+        &ready_signal,
+        [](uint32_t return_code) {
+            ReplayThreadDoneMessage message{return_code};
+            EventDispatcher::send_message(message);
+        });
+
+    wait_for_thread();
+
+    log_event("... Configuring Baseband");
+
+    const uint32_t bb_sample_rate = 1536000;
+    const uint32_t decimation = bb_sample_rate / wav_sample_rate;
+
+    baseband::set_audiotx_config(
+        bb_sample_rate / decimation,
+        0.0f,
+        5.0f,
+        wav_bits_per_sample,
+        wav_bits_per_sample,
+        0,
+        true,
+        false,
+        false,
+        false);
+
+    baseband::set_sample_rate(wav_sample_rate);
+
+    log_event("... Starting Audio Output");
+    audio::output::start();
+    log_event("... Setting Max Volume");
+    audio::headphone::set_volume(audio::headphone::volume_range().max);
+
+    transmitter_model.enable();
+
+    log_event(">>> Playback Started <<<");
+}
+
+ShoppingCartLock::ShoppingCartLock(NavigationView& nav)
+    : nav_{nav} {
+    add_children({&menu_view,
+                  &text_empty,
+                  &button_lock,
+                  &button_unlock,
+                  &button_stop});
+
+    button_lock.on_select = [this](Button&) {
+        if (is_active()) stop();
+        log_event(">>> LOCK_SEQUENCE_START");
+        play_audio(shoppingcart_lock_file, true);
+    };
+
+    button_unlock.on_select = [this](Button&) {
+        if (is_active()) stop();
+        log_event(">>> UNLOCK_SEQUENCE_START");
+        play_audio(shoppingcart_unlock_file, true);
+    };
+
+    button_stop.on_select = [this](Button&) {
+        log_event(">>> STOPPING AUDIO");
+        stop();
+    };
+
+    list_wav_files();
+
+    log_event("[+] INITIALIZATION COMPLETE");
+    log_event("[+] PORTAPACK ARMED");
+    log_event("[*] STATUS: READY");
+}
+
+ShoppingCartLock::~ShoppingCartLock() {
+    stop();
+    baseband::shutdown();
+}
+
+}  // namespace ui::external_app::shoppingcart_lock