[FL-3097] fbt, faploader: minimal app module implementation (#2420)

* fbt, faploader: minimal app module implementation
* faploader, libs: moved API hashtable core to flipper_application
* example: compound api
* lib: flipper_application: naming fixes, doxygen comments
* fbt: changed `requires` manifest field behavior for app extensions
* examples: refactored plugin apps; faploader: changed new API naming; fbt: changed PLUGIN app type meaning
* loader: dropped support for debug apps & plugin menus
* moved applications/plugins -> applications/external
* Restored x bit on chiplist_convert.py
* git: fixed free-dap submodule path
* pvs: updated submodule paths
* examples: example_advanced_plugins.c: removed potential memory leak on errors
* examples: example_plugins: refined requires
* fbt: not deploying app modules for debug/sample apps; extra validation for .PLUGIN-type apps
* apps: removed cdefines for external apps
* fbt: moved ext app path definition
* fbt: reworked fap_dist handling; f18: synced api_symbols.csv
* fbt: removed resources_paths for extapps
* scripts: reworked storage
* scripts: reworked runfap.py & selfupdate.py to use new api
* wip: fal runner
* fbt: moved file packaging into separate module
* scripts: storage: fixes
* scripts: storage: minor fixes for new api
* fbt: changed internal artifact storage details for external apps
* scripts: storage: additional fixes and better error reporting; examples: using APP_DATA_PATH()
* fbt, scripts: reworked launch_app to deploy plugins; moved old runfap.py to distfap.py
* fbt: extra check for plugins descriptors
* fbt: additional checks in emitter
* fbt: better info message on SDK rebuild
* scripts: removed requirements.txt
* loader: removed remnants of plugins & debug menus
* post-review fixes

applications/external/dap_link/gui/dap_gui.c

@@ -0,0 +1,92 @@
+#include "dap_gui.h"
+#include "dap_gui_i.h"
+
+#define DAP_GUI_TICK 250
+
+static bool dap_gui_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    DapGuiApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool dap_gui_back_event_callback(void* context) {
+    furi_assert(context);
+    DapGuiApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void dap_gui_tick_event_callback(void* context) {
+    furi_assert(context);
+    DapGuiApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+DapGuiApp* dap_gui_alloc() {
+    DapGuiApp* app = malloc(sizeof(DapGuiApp));
+    app->gui = furi_record_open(RECORD_GUI);
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&dap_scene_handlers, app);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+
+    view_dispatcher_set_custom_event_callback(app->view_dispatcher, dap_gui_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, dap_gui_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, dap_gui_tick_event_callback, DAP_GUI_TICK);
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->notifications = furi_record_open(RECORD_NOTIFICATION);
+
+    app->var_item_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DapGuiAppViewVarItemList,
+        variable_item_list_get_view(app->var_item_list));
+
+    app->main_view = dap_main_view_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, DapGuiAppViewMainView, dap_main_view_get_view(app->main_view));
+
+    app->widget = widget_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, DapGuiAppViewWidget, widget_get_view(app->widget));
+
+    scene_manager_next_scene(app->scene_manager, DapSceneMain);
+
+    return app;
+}
+
+void dap_gui_free(DapGuiApp* app) {
+    view_dispatcher_remove_view(app->view_dispatcher, DapGuiAppViewVarItemList);
+    variable_item_list_free(app->var_item_list);
+
+    view_dispatcher_remove_view(app->view_dispatcher, DapGuiAppViewMainView);
+    dap_main_view_free(app->main_view);
+
+    view_dispatcher_remove_view(app->view_dispatcher, DapGuiAppViewWidget);
+    widget_free(app->widget);
+
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    // Close records
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_NOTIFICATION);
+
+    free(app);
+}
+
+int32_t dap_gui_thread(void* arg) {
+    DapGuiApp* app = dap_gui_alloc();
+    app->dap_app = arg;
+
+    notification_message_block(app->notifications, &sequence_display_backlight_enforce_on);
+    view_dispatcher_run(app->view_dispatcher);
+    notification_message_block(app->notifications, &sequence_display_backlight_enforce_auto);
+
+    dap_gui_free(app);
+    return 0;
+}

applications/external/dap_link/gui/dap_gui.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <stdint.h>
+
+int32_t dap_gui_thread(void* arg);

applications/external/dap_link/gui/dap_gui_custom_event.h

@@ -0,0 +1,7 @@
+#pragma once
+
+typedef enum {
+    DapAppCustomEventConfig,
+    DapAppCustomEventHelp,
+    DapAppCustomEventAbout,
+} DapAppCustomEvent;

applications/external/dap_link/gui/dap_gui_i.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/submenu.h>
+#include <notification/notification_messages.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/modules/widget.h>
+
+#include "dap_gui.h"
+#include "../dap_link.h"
+#include "scenes/config/dap_scene.h"
+#include "dap_gui_custom_event.h"
+#include "views/dap_main_view.h"
+
+typedef struct {
+    DapApp* dap_app;
+
+    Gui* gui;
+    NotificationApp* notifications;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+
+    VariableItemList* var_item_list;
+    DapMainView* main_view;
+    Widget* widget;
+} DapGuiApp;
+
+typedef enum {
+    DapGuiAppViewVarItemList,
+    DapGuiAppViewMainView,
+    DapGuiAppViewWidget,
+} DapGuiAppView;

applications/external/dap_link/gui/scenes/config/dap_scene.c

@@ -0,0 +1,30 @@
+#include "dap_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const dap_scene_on_enter_handlers[])(void*) = {
+#include "dap_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const dap_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "dap_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const dap_scene_on_exit_handlers[])(void* context) = {
+#include "dap_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers dap_scene_handlers = {
+    .on_enter_handlers = dap_scene_on_enter_handlers,
+    .on_event_handlers = dap_scene_on_event_handlers,
+    .on_exit_handlers = dap_scene_on_exit_handlers,
+    .scene_num = DapSceneNum,
+};

applications/external/dap_link/gui/scenes/config/dap_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) DapScene##id,
+typedef enum {
+#include "dap_scene_config.h"
+    DapSceneNum,
+} DapScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers dap_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "dap_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "dap_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "dap_scene_config.h"
+#undef ADD_SCENE

applications/external/dap_link/gui/scenes/config/dap_scene_config.h

@@ -0,0 +1,4 @@
+ADD_SCENE(dap, main, Main)
+ADD_SCENE(dap, config, Config)
+ADD_SCENE(dap, help, Help)
+ADD_SCENE(dap, about, About)

applications/external/dap_link/gui/scenes/dap_scene_about.c

@@ -0,0 +1,68 @@
+#include "../dap_gui_i.h"
+
+#define DAP_VERSION_APP "0.1.0"
+#define DAP_DEVELOPED "Dr_Zlo"
+#define DAP_GITHUB "https://github.com/flipperdevices/flipperzero-firmware"
+
+void dap_scene_about_on_enter(void* context) {
+    DapGuiApp* app = context;
+
+    FuriString* temp_str;
+    temp_str = furi_string_alloc();
+    furi_string_printf(temp_str, "\e#%s\n", "Information");
+
+    furi_string_cat_printf(temp_str, "Version: %s\n", DAP_VERSION_APP);
+    furi_string_cat_printf(temp_str, "Developed by: %s\n", DAP_DEVELOPED);
+    furi_string_cat_printf(temp_str, "Github: %s\n\n", DAP_GITHUB);
+
+    furi_string_cat_printf(temp_str, "\e#%s\n", "Description");
+    furi_string_cat_printf(
+        temp_str, "CMSIS-DAP debugger\nbased on Free-DAP\nThanks to Alex Taradov\n\n");
+
+    furi_string_cat_printf(
+        temp_str,
+        "Supported protocols:\n"
+        "SWD, JTAG, UART\n"
+        "DAP v1 (cmsis_backend hid), DAP v2 (cmsis_backend usb_bulk), VCP\n");
+
+    widget_add_text_box_element(
+        app->widget,
+        0,
+        0,
+        128,
+        14,
+        AlignCenter,
+        AlignBottom,
+        "\e#\e!                                                      \e!\n",
+        false);
+    widget_add_text_box_element(
+        app->widget,
+        0,
+        2,
+        128,
+        14,
+        AlignCenter,
+        AlignBottom,
+        "\e#\e!              DAP Link              \e!\n",
+        false);
+    widget_add_text_scroll_element(app->widget, 0, 16, 128, 50, furi_string_get_cstr(temp_str));
+    furi_string_free(temp_str);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DapGuiAppViewWidget);
+}
+
+bool dap_scene_about_on_event(void* context, SceneManagerEvent event) {
+    DapGuiApp* app = context;
+    bool consumed = false;
+    UNUSED(app);
+    UNUSED(event);
+
+    return consumed;
+}
+
+void dap_scene_about_on_exit(void* context) {
+    DapGuiApp* app = context;
+
+    // Clear views
+    widget_reset(app->widget);
+}

applications/external/dap_link/gui/scenes/dap_scene_config.c

@@ -0,0 +1,107 @@
+#include "../dap_gui_i.h"
+
+static const char* swd_pins[] = {[DapSwdPinsPA7PA6] = "2,3", [DapSwdPinsPA14PA13] = "10,12"};
+static const char* uart_pins[] = {[DapUartTypeUSART1] = "13,14", [DapUartTypeLPUART1] = "15,16"};
+static const char* uart_swap[] = {[DapUartTXRXNormal] = "No", [DapUartTXRXSwap] = "Yes"};
+
+static void swd_pins_cb(VariableItem* item) {
+    DapGuiApp* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+
+    variable_item_set_current_value_text(item, swd_pins[index]);
+
+    DapConfig* config = dap_app_get_config(app->dap_app);
+    config->swd_pins = index;
+    dap_app_set_config(app->dap_app, config);
+}
+
+static void uart_pins_cb(VariableItem* item) {
+    DapGuiApp* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+
+    variable_item_set_current_value_text(item, uart_pins[index]);
+
+    DapConfig* config = dap_app_get_config(app->dap_app);
+    config->uart_pins = index;
+    dap_app_set_config(app->dap_app, config);
+}
+
+static void uart_swap_cb(VariableItem* item) {
+    DapGuiApp* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+
+    variable_item_set_current_value_text(item, uart_swap[index]);
+
+    DapConfig* config = dap_app_get_config(app->dap_app);
+    config->uart_swap = index;
+    dap_app_set_config(app->dap_app, config);
+}
+
+static void ok_cb(void* context, uint32_t index) {
+    DapGuiApp* app = context;
+    switch(index) {
+    case 3:
+        view_dispatcher_send_custom_event(app->view_dispatcher, DapAppCustomEventHelp);
+        break;
+    case 4:
+        view_dispatcher_send_custom_event(app->view_dispatcher, DapAppCustomEventAbout);
+        break;
+    default:
+        break;
+    }
+}
+
+void dap_scene_config_on_enter(void* context) {
+    DapGuiApp* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+    VariableItem* item;
+    DapConfig* config = dap_app_get_config(app->dap_app);
+
+    item = variable_item_list_add(
+        var_item_list, "SWC SWD Pins", COUNT_OF(swd_pins), swd_pins_cb, app);
+    variable_item_set_current_value_index(item, config->swd_pins);
+    variable_item_set_current_value_text(item, swd_pins[config->swd_pins]);
+
+    item =
+        variable_item_list_add(var_item_list, "UART Pins", COUNT_OF(uart_pins), uart_pins_cb, app);
+    variable_item_set_current_value_index(item, config->uart_pins);
+    variable_item_set_current_value_text(item, uart_pins[config->uart_pins]);
+
+    item = variable_item_list_add(
+        var_item_list, "Swap TX RX", COUNT_OF(uart_swap), uart_swap_cb, app);
+    variable_item_set_current_value_index(item, config->uart_swap);
+    variable_item_set_current_value_text(item, uart_swap[config->uart_swap]);
+
+    variable_item_list_add(var_item_list, "Help and Pinout", 0, NULL, NULL);
+    variable_item_list_add(var_item_list, "About", 0, NULL, NULL);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, DapSceneConfig));
+
+    variable_item_list_set_enter_callback(var_item_list, ok_cb, app);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DapGuiAppViewVarItemList);
+}
+
+bool dap_scene_config_on_event(void* context, SceneManagerEvent event) {
+    DapGuiApp* app = context;
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == DapAppCustomEventHelp) {
+            scene_manager_next_scene(app->scene_manager, DapSceneHelp);
+            return true;
+        } else if(event.event == DapAppCustomEventAbout) {
+            scene_manager_next_scene(app->scene_manager, DapSceneAbout);
+            return true;
+        }
+    }
+    return false;
+}
+
+void dap_scene_config_on_exit(void* context) {
+    DapGuiApp* app = context;
+    scene_manager_set_scene_state(
+        app->scene_manager,
+        DapSceneConfig,
+        variable_item_list_get_selected_item_index(app->var_item_list));
+    variable_item_list_reset(app->var_item_list);
+}

applications/external/dap_link/gui/scenes/dap_scene_help.c

@@ -0,0 +1,102 @@
+#include "../dap_gui_i.h"
+
+void dap_scene_help_on_enter(void* context) {
+    DapGuiApp* app = context;
+    DapConfig* config = dap_app_get_config(app->dap_app);
+    FuriString* string = furi_string_alloc();
+
+    furi_string_cat(string, "CMSIS DAP/DAP Link v2\r\n");
+    furi_string_cat_printf(string, "Serial: %s\r\n", dap_app_get_serial(app->dap_app));
+    furi_string_cat(
+        string,
+        "Pinout:\r\n"
+        "\e#SWD:\r\n");
+
+    switch(config->swd_pins) {
+    case DapSwdPinsPA7PA6:
+        furi_string_cat(
+            string,
+            "    SWC: 2 [A7]\r\n"
+            "    SWD: 3 [A6]\r\n");
+        break;
+    case DapSwdPinsPA14PA13:
+        furi_string_cat(
+            string,
+            "    SWC: 10 [SWC]\r\n"
+            "    SWD: 12 [SIO]\r\n");
+        break;
+    default:
+        break;
+    }
+
+    furi_string_cat(string, "\e#JTAG:\r\n");
+    switch(config->swd_pins) {
+    case DapSwdPinsPA7PA6:
+        furi_string_cat(
+            string,
+            "    TCK: 2 [A7]\r\n"
+            "    TMS: 3 [A6]\r\n"
+            "    RST: 4 [A4]\r\n"
+            "    TDO: 5 [B3]\r\n"
+            "    TDI: 6 [B2]\r\n");
+        break;
+    case DapSwdPinsPA14PA13:
+        furi_string_cat(
+            string,
+            "    RST: 4 [A4]\r\n"
+            "    TDO: 5 [B3]\r\n"
+            "    TDI: 6 [B2]\r\n"
+            "    TCK: 10 [SWC]\r\n"
+            "    TMS: 12 [SIO]\r\n");
+        break;
+    default:
+        break;
+    }
+
+    furi_string_cat(string, "\e#UART:\r\n");
+    switch(config->uart_pins) {
+    case DapUartTypeUSART1:
+        if(config->uart_swap == DapUartTXRXNormal) {
+            furi_string_cat(
+                string,
+                "    TX: 13 [TX]\r\n"
+                "    RX: 14 [RX]\r\n");
+        } else {
+            furi_string_cat(
+                string,
+                "    RX: 13 [TX]\r\n"
+                "    TX: 14 [RX]\r\n");
+        }
+        break;
+    case DapUartTypeLPUART1:
+        if(config->uart_swap == DapUartTXRXNormal) {
+            furi_string_cat(
+                string,
+                "    TX: 15 [C1]\r\n"
+                "    RX: 16 [C0]\r\n");
+        } else {
+            furi_string_cat(
+                string,
+                "    RX: 15 [C1]\r\n"
+                "    TX: 16 [C0]\r\n");
+        }
+        break;
+    default:
+        break;
+    }
+
+    widget_add_text_scroll_element(app->widget, 0, 0, 128, 64, furi_string_get_cstr(string));
+    furi_string_free(string);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DapGuiAppViewWidget);
+}
+
+bool dap_scene_help_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    return false;
+}
+
+void dap_scene_help_on_exit(void* context) {
+    DapGuiApp* app = context;
+    widget_reset(app->widget);
+}

applications/external/dap_link/gui/scenes/dap_scene_main.c

@@ -0,0 +1,154 @@
+#include "../dap_gui_i.h"
+#include "../../dap_link.h"
+
+typedef struct {
+    DapState dap_state;
+    bool dap_active;
+    bool tx_active;
+    bool rx_active;
+} DapSceneMainState;
+
+static bool process_dap_state(DapGuiApp* app) {
+    DapSceneMainState* state =
+        (DapSceneMainState*)scene_manager_get_scene_state(app->scene_manager, DapSceneMain);
+    if(state == NULL) return true;
+
+    DapState* prev_state = &state->dap_state;
+    DapState next_state;
+    dap_app_get_state(app->dap_app, &next_state);
+    bool need_to_update = false;
+
+    if(prev_state->dap_mode != next_state.dap_mode) {
+        switch(next_state.dap_mode) {
+        case DapModeDisconnected:
+            dap_main_view_set_mode(app->main_view, DapMainViewModeDisconnected);
+            notification_message(app->notifications, &sequence_blink_stop);
+            break;
+        case DapModeSWD:
+            dap_main_view_set_mode(app->main_view, DapMainViewModeSWD);
+            notification_message(app->notifications, &sequence_blink_start_blue);
+            break;
+        case DapModeJTAG:
+            dap_main_view_set_mode(app->main_view, DapMainViewModeJTAG);
+            notification_message(app->notifications, &sequence_blink_start_magenta);
+            break;
+        }
+        need_to_update = true;
+    }
+
+    if(prev_state->dap_version != next_state.dap_version) {
+        switch(next_state.dap_version) {
+        case DapVersionUnknown:
+            dap_main_view_set_version(app->main_view, DapMainViewVersionUnknown);
+            break;
+        case DapVersionV1:
+            dap_main_view_set_version(app->main_view, DapMainViewVersionV1);
+            break;
+        case DapVersionV2:
+            dap_main_view_set_version(app->main_view, DapMainViewVersionV2);
+            break;
+        }
+        need_to_update = true;
+    }
+
+    if(prev_state->usb_connected != next_state.usb_connected) {
+        dap_main_view_set_usb_connected(app->main_view, next_state.usb_connected);
+        need_to_update = true;
+    }
+
+    if(prev_state->dap_counter != next_state.dap_counter) {
+        if(!state->dap_active) {
+            state->dap_active = true;
+            dap_main_view_set_dap(app->main_view, state->dap_active);
+            need_to_update = true;
+        }
+    } else {
+        if(state->dap_active) {
+            state->dap_active = false;
+            dap_main_view_set_dap(app->main_view, state->dap_active);
+            need_to_update = true;
+        }
+    }
+
+    if(prev_state->cdc_baudrate != next_state.cdc_baudrate) {
+        dap_main_view_set_baudrate(app->main_view, next_state.cdc_baudrate);
+        need_to_update = true;
+    }
+
+    if(prev_state->cdc_tx_counter != next_state.cdc_tx_counter) {
+        if(!state->tx_active) {
+            state->tx_active = true;
+            dap_main_view_set_tx(app->main_view, state->tx_active);
+            need_to_update = true;
+            notification_message(app->notifications, &sequence_blink_start_red);
+        }
+    } else {
+        if(state->tx_active) {
+            state->tx_active = false;
+            dap_main_view_set_tx(app->main_view, state->tx_active);
+            need_to_update = true;
+            notification_message(app->notifications, &sequence_blink_stop);
+        }
+    }
+
+    if(prev_state->cdc_rx_counter != next_state.cdc_rx_counter) {
+        if(!state->rx_active) {
+            state->rx_active = true;
+            dap_main_view_set_rx(app->main_view, state->rx_active);
+            need_to_update = true;
+            notification_message(app->notifications, &sequence_blink_start_green);
+        }
+    } else {
+        if(state->rx_active) {
+            state->rx_active = false;
+            dap_main_view_set_rx(app->main_view, state->rx_active);
+            need_to_update = true;
+            notification_message(app->notifications, &sequence_blink_stop);
+        }
+    }
+
+    if(need_to_update) {
+        dap_main_view_update(app->main_view);
+    }
+
+    *prev_state = next_state;
+    return true;
+}
+
+static void dap_scene_main_on_left(void* context) {
+    DapGuiApp* app = (DapGuiApp*)context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, DapAppCustomEventConfig);
+}
+
+void dap_scene_main_on_enter(void* context) {
+    DapGuiApp* app = context;
+    DapSceneMainState* state = malloc(sizeof(DapSceneMainState));
+    dap_main_view_set_left_callback(app->main_view, dap_scene_main_on_left, app);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DapGuiAppViewMainView);
+    scene_manager_set_scene_state(app->scene_manager, DapSceneMain, (uint32_t)state);
+}
+
+bool dap_scene_main_on_event(void* context, SceneManagerEvent event) {
+    DapGuiApp* app = context;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == DapAppCustomEventConfig) {
+            scene_manager_next_scene(app->scene_manager, DapSceneConfig);
+            return true;
+        }
+    } else if(event.type == SceneManagerEventTypeTick) {
+        return process_dap_state(app);
+    }
+
+    return false;
+}
+
+void dap_scene_main_on_exit(void* context) {
+    DapGuiApp* app = context;
+    DapSceneMainState* state =
+        (DapSceneMainState*)scene_manager_get_scene_state(app->scene_manager, DapSceneMain);
+    scene_manager_set_scene_state(app->scene_manager, DapSceneMain, (uint32_t)NULL);
+    FURI_SW_MEMBARRIER();
+    free(state);
+    notification_message(app->notifications, &sequence_blink_stop);
+}

applications/external/dap_link/gui/views/dap_main_view.c

@@ -0,0 +1,189 @@
+#include "dap_main_view.h"
+#include "dap_link_icons.h"
+#include <gui/elements.h>
+
+// extern const Icon I_ArrowDownEmpty_12x18;
+// extern const Icon I_ArrowDownFilled_12x18;
+// extern const Icon I_ArrowUpEmpty_12x18;
+// extern const Icon I_ArrowUpFilled_12x18;
+
+struct DapMainView {
+    View* view;
+    DapMainViewButtonCallback cb_left;
+    void* cb_context;
+};
+
+typedef struct {
+    DapMainViewMode mode;
+    DapMainViewVersion version;
+    bool usb_connected;
+    uint32_t baudrate;
+    bool dap_active;
+    bool tx_active;
+    bool rx_active;
+} DapMainViewModel;
+
+static void dap_main_view_draw_callback(Canvas* canvas, void* _model) {
+    DapMainViewModel* model = _model;
+    UNUSED(model);
+    canvas_clear(canvas);
+    elements_button_left(canvas, "Config");
+
+    canvas_set_color(canvas, ColorBlack);
+    canvas_draw_box(canvas, 0, 0, 127, 11);
+    canvas_set_color(canvas, ColorWhite);
+
+    const char* header_string;
+    if(model->usb_connected) {
+        if(model->version == DapMainViewVersionV1) {
+            header_string = "DAP Link V1 Connected";
+        } else if(model->version == DapMainViewVersionV2) {
+            header_string = "DAP Link V2 Connected";
+        } else {
+            header_string = "DAP Link Connected";
+        }
+    } else {
+        header_string = "DAP Link";
+    }
+
+    canvas_draw_str_aligned(canvas, 64, 9, AlignCenter, AlignBottom, header_string);
+
+    canvas_set_color(canvas, ColorBlack);
+    if(model->dap_active) {
+        canvas_draw_icon(canvas, 14, 16, &I_ArrowUpFilled_12x18);
+        canvas_draw_icon(canvas, 28, 16, &I_ArrowDownFilled_12x18);
+    } else {
+        canvas_draw_icon(canvas, 14, 16, &I_ArrowUpEmpty_12x18);
+        canvas_draw_icon(canvas, 28, 16, &I_ArrowDownEmpty_12x18);
+    }
+
+    switch(model->mode) {
+    case DapMainViewModeDisconnected:
+        canvas_draw_str_aligned(canvas, 26, 38, AlignCenter, AlignTop, "----");
+        break;
+    case DapMainViewModeSWD:
+        canvas_draw_str_aligned(canvas, 26, 38, AlignCenter, AlignTop, "SWD");
+        break;
+    case DapMainViewModeJTAG:
+        canvas_draw_str_aligned(canvas, 26, 38, AlignCenter, AlignTop, "JTAG");
+        break;
+    }
+
+    if(model->tx_active) {
+        canvas_draw_icon(canvas, 87, 16, &I_ArrowUpFilled_12x18);
+    } else {
+        canvas_draw_icon(canvas, 87, 16, &I_ArrowUpEmpty_12x18);
+    }
+
+    if(model->rx_active) {
+        canvas_draw_icon(canvas, 101, 16, &I_ArrowDownFilled_12x18);
+    } else {
+        canvas_draw_icon(canvas, 101, 16, &I_ArrowDownEmpty_12x18);
+    }
+
+    canvas_draw_str_aligned(canvas, 100, 38, AlignCenter, AlignTop, "UART");
+
+    canvas_draw_line(canvas, 44, 52, 123, 52);
+    if(model->baudrate == 0) {
+        canvas_draw_str(canvas, 45, 62, "Baud: ????");
+    } else {
+        char baudrate_str[18];
+        snprintf(baudrate_str, 18, "Baud: %lu", model->baudrate);
+        canvas_draw_str(canvas, 45, 62, baudrate_str);
+    }
+}
+
+static bool dap_main_view_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    DapMainView* dap_main_view = context;
+    bool consumed = false;
+
+    if(event->type == InputTypeShort) {
+        if(event->key == InputKeyLeft) {
+            if(dap_main_view->cb_left) {
+                dap_main_view->cb_left(dap_main_view->cb_context);
+            }
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+DapMainView* dap_main_view_alloc() {
+    DapMainView* dap_main_view = malloc(sizeof(DapMainView));
+
+    dap_main_view->view = view_alloc();
+    view_allocate_model(dap_main_view->view, ViewModelTypeLocking, sizeof(DapMainViewModel));
+    view_set_context(dap_main_view->view, dap_main_view);
+    view_set_draw_callback(dap_main_view->view, dap_main_view_draw_callback);
+    view_set_input_callback(dap_main_view->view, dap_main_view_input_callback);
+    return dap_main_view;
+}
+
+void dap_main_view_free(DapMainView* dap_main_view) {
+    view_free(dap_main_view->view);
+    free(dap_main_view);
+}
+
+View* dap_main_view_get_view(DapMainView* dap_main_view) {
+    return dap_main_view->view;
+}
+
+void dap_main_view_set_left_callback(
+    DapMainView* dap_main_view,
+    DapMainViewButtonCallback callback,
+    void* context) {
+    with_view_model(
+        dap_main_view->view,
+        DapMainViewModel * model,
+        {
+            UNUSED(model);
+            dap_main_view->cb_left = callback;
+            dap_main_view->cb_context = context;
+        },
+        true);
+}
+
+void dap_main_view_set_mode(DapMainView* dap_main_view, DapMainViewMode mode) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->mode = mode; }, false);
+}
+
+void dap_main_view_set_dap(DapMainView* dap_main_view, bool active) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->dap_active = active; }, false);
+}
+
+void dap_main_view_set_tx(DapMainView* dap_main_view, bool active) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->tx_active = active; }, false);
+}
+
+void dap_main_view_set_rx(DapMainView* dap_main_view, bool active) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->rx_active = active; }, false);
+}
+
+void dap_main_view_set_baudrate(DapMainView* dap_main_view, uint32_t baudrate) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->baudrate = baudrate; }, false);
+}
+
+void dap_main_view_update(DapMainView* dap_main_view) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { UNUSED(model); }, true);
+}
+
+void dap_main_view_set_version(DapMainView* dap_main_view, DapMainViewVersion version) {
+    with_view_model(
+        dap_main_view->view, DapMainViewModel * model, { model->version = version; }, false);
+}
+
+void dap_main_view_set_usb_connected(DapMainView* dap_main_view, bool connected) {
+    with_view_model(
+        dap_main_view->view,
+        DapMainViewModel * model,
+        { model->usb_connected = connected; },
+        false);
+}

applications/external/dap_link/gui/views/dap_main_view.h

@@ -0,0 +1,45 @@
+#pragma once
+#include <gui/view.h>
+
+typedef struct DapMainView DapMainView;
+
+typedef void (*DapMainViewButtonCallback)(void* context);
+
+typedef enum {
+    DapMainViewVersionUnknown,
+    DapMainViewVersionV1,
+    DapMainViewVersionV2,
+} DapMainViewVersion;
+
+typedef enum {
+    DapMainViewModeDisconnected,
+    DapMainViewModeSWD,
+    DapMainViewModeJTAG,
+} DapMainViewMode;
+
+DapMainView* dap_main_view_alloc();
+
+void dap_main_view_free(DapMainView* dap_main_view);
+
+View* dap_main_view_get_view(DapMainView* dap_main_view);
+
+void dap_main_view_set_left_callback(
+    DapMainView* dap_main_view,
+    DapMainViewButtonCallback callback,
+    void* context);
+
+void dap_main_view_set_mode(DapMainView* dap_main_view, DapMainViewMode mode);
+
+void dap_main_view_set_version(DapMainView* dap_main_view, DapMainViewVersion version);
+
+void dap_main_view_set_dap(DapMainView* dap_main_view, bool active);
+
+void dap_main_view_set_tx(DapMainView* dap_main_view, bool active);
+
+void dap_main_view_set_rx(DapMainView* dap_main_view, bool active);
+
+void dap_main_view_set_usb_connected(DapMainView* dap_main_view, bool connected);
+
+void dap_main_view_set_baudrate(DapMainView* dap_main_view, uint32_t baudrate);
+
+void dap_main_view_update(DapMainView* dap_main_view);