[FL-2627] Flipper applications: SDK, build and debug system (#1387)

* Added support for running applications from SD card (FAPs - Flipper Application Packages)
* Added plugin_dist target for fbt to build FAPs
* All apps of type FlipperAppType.EXTERNAL and FlipperAppType.PLUGIN are built as FAPs by default
* Updated VSCode configuration for new fbt features - re-deploy stock configuration to use them
* Added debugging support for FAPs with fbt debug & VSCode
* Added public firmware API with automated versioning

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: SG <who.just.the.doctor@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

applications/settings/desktop_settings/application.fam

@@ -0,0 +1,12 @@
+App(
+    appid="desktop_settings",
+    name="Desktop",
+    apptype=FlipperAppType.SETTINGS,
+    entry_point="desktop_settings_app",
+    requires=[
+        "desktop",
+        "gui",
+    ],
+    stack_size=1 * 1024,
+    order=50,
+)

applications/settings/desktop_settings/desktop_settings_app.c

@@ -0,0 +1,102 @@
+#include <furi.h>
+#include <gui/modules/popup.h>
+#include <gui/scene_manager.h>
+
+#include "desktop_settings_app.h"
+#include "scenes/desktop_settings_scene.h"
+#include <desktop/views/desktop_view_pin_input.h>
+
+static bool desktop_settings_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool desktop_settings_back_event_callback(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+DesktopSettingsApp* desktop_settings_app_alloc() {
+    DesktopSettingsApp* app = malloc(sizeof(DesktopSettingsApp));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&desktop_settings_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, desktop_settings_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, desktop_settings_back_event_callback);
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->popup = popup_alloc();
+    app->submenu = submenu_alloc();
+    app->variable_item_list = variable_item_list_alloc();
+    app->pin_input_view = desktop_view_pin_input_alloc();
+    app->pin_setup_howto_view = desktop_settings_view_pin_setup_howto_alloc();
+    app->pin_setup_howto2_view = desktop_settings_view_pin_setup_howto2_alloc();
+
+    view_dispatcher_add_view(
+        app->view_dispatcher, DesktopSettingsAppViewMenu, submenu_get_view(app->submenu));
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DesktopSettingsAppViewVarItemList,
+        variable_item_list_get_view(app->variable_item_list));
+    view_dispatcher_add_view(
+        app->view_dispatcher, DesktopSettingsAppViewIdPopup, popup_get_view(app->popup));
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DesktopSettingsAppViewIdPinInput,
+        desktop_view_pin_input_get_view(app->pin_input_view));
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DesktopSettingsAppViewIdPinSetupHowto,
+        desktop_settings_view_pin_setup_howto_get_view(app->pin_setup_howto_view));
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DesktopSettingsAppViewIdPinSetupHowto2,
+        desktop_settings_view_pin_setup_howto2_get_view(app->pin_setup_howto2_view));
+    return app;
+}
+
+void desktop_settings_app_free(DesktopSettingsApp* app) {
+    furi_assert(app);
+    // Variable item list
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewMenu);
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewVarItemList);
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewIdPopup);
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewIdPinInput);
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewIdPinSetupHowto);
+    view_dispatcher_remove_view(app->view_dispatcher, DesktopSettingsAppViewIdPinSetupHowto2);
+    variable_item_list_free(app->variable_item_list);
+    submenu_free(app->submenu);
+    popup_free(app->popup);
+    desktop_view_pin_input_free(app->pin_input_view);
+    desktop_settings_view_pin_setup_howto_free(app->pin_setup_howto_view);
+    desktop_settings_view_pin_setup_howto2_free(app->pin_setup_howto2_view);
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+    // Records
+    furi_record_close(RECORD_GUI);
+    free(app);
+}
+
+extern int32_t desktop_settings_app(void* p) {
+    DesktopSettingsApp* app = desktop_settings_app_alloc();
+    LOAD_DESKTOP_SETTINGS(&app->settings);
+    if(p && (strcmp(p, DESKTOP_SETTINGS_RUN_PIN_SETUP_ARG) == 0)) {
+        scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetupHowto);
+    } else {
+        scene_manager_next_scene(app->scene_manager, DesktopSettingsAppSceneStart);
+    }
+
+    view_dispatcher_run(app->view_dispatcher);
+    desktop_settings_app_free(app);
+    return 0;
+}

applications/settings/desktop_settings/desktop_settings_app.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <gui/gui.h>
+#include <gui/modules/popup.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/variable_item_list.h>
+
+#include <desktop/desktop_settings.h>
+#include <desktop/views/desktop_view_pin_input.h>
+#include "views/desktop_settings_view_pin_setup_howto.h"
+#include "views/desktop_settings_view_pin_setup_howto2.h"
+
+typedef enum {
+    DesktopSettingsAppViewMenu,
+    DesktopSettingsAppViewVarItemList,
+    DesktopSettingsAppViewIdPopup,
+    DesktopSettingsAppViewIdPinInput,
+    DesktopSettingsAppViewIdPinSetupHowto,
+    DesktopSettingsAppViewIdPinSetupHowto2,
+} DesktopSettingsAppView;
+
+typedef struct {
+    DesktopSettings settings;
+
+    Gui* gui;
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+    VariableItemList* variable_item_list;
+    Submenu* submenu;
+    Popup* popup;
+    DesktopViewPinInput* pin_input_view;
+    DesktopSettingsViewPinSetupHowto* pin_setup_howto_view;
+    DesktopSettingsViewPinSetupHowto2* pin_setup_howto2_view;
+
+    PinCode pincode_buffer;
+    bool pincode_buffer_filled;
+
+    uint8_t menu_idx;
+} DesktopSettingsApp;

applications/settings/desktop_settings/scenes/desktop_settings_scene.c

@@ -0,0 +1,30 @@
+#include "desktop_settings_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const desktop_settings_on_enter_handlers[])(void*) = {
+#include "desktop_settings_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 desktop_settings_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "desktop_settings_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 desktop_settings_on_exit_handlers[])(void* context) = {
+#include "desktop_settings_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers desktop_settings_scene_handlers = {
+    .on_enter_handlers = desktop_settings_on_enter_handlers,
+    .on_event_handlers = desktop_settings_on_event_handlers,
+    .on_exit_handlers = desktop_settings_on_exit_handlers,
+    .scene_num = DesktopSettingsAppSceneNum,
+};

applications/settings/desktop_settings/scenes/desktop_settings_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) DesktopSettingsAppScene##id,
+typedef enum {
+#include "desktop_settings_scene_config.h"
+    DesktopSettingsAppSceneNum,
+} DesktopSettingsAppScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers desktop_settings_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "desktop_settings_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 "desktop_settings_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 "desktop_settings_scene_config.h"
+#undef ADD_SCENE

applications/settings/desktop_settings/scenes/desktop_settings_scene_config.h

@@ -0,0 +1,11 @@
+ADD_SCENE(desktop_settings, start, Start)
+ADD_SCENE(desktop_settings, favorite, Favorite)
+ADD_SCENE(desktop_settings, pin_menu, PinMenu)
+
+ADD_SCENE(desktop_settings, pin_auth, PinAuth)
+ADD_SCENE(desktop_settings, pin_error, PinError)
+ADD_SCENE(desktop_settings, pin_disable, PinDisable)
+ADD_SCENE(desktop_settings, pin_setup, PinSetup)
+ADD_SCENE(desktop_settings, pin_setup_howto, PinSetupHowto)
+ADD_SCENE(desktop_settings, pin_setup_howto2, PinSetupHowto2)
+ADD_SCENE(desktop_settings, pin_setup_done, PinSetupDone)

applications/settings/desktop_settings/scenes/desktop_settings_scene_favorite.c

@@ -0,0 +1,61 @@
+#include "../desktop_settings_app.h"
+#include "applications.h"
+#include "desktop_settings_scene.h"
+
+static void desktop_settings_scene_favorite_submenu_callback(void* context, uint32_t index) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void desktop_settings_scene_favorite_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+    Submenu* submenu = app->submenu;
+    submenu_reset(submenu);
+
+    for(size_t i = 0; i < FLIPPER_APPS_COUNT; i++) {
+        submenu_add_item(
+            submenu,
+            FLIPPER_APPS[i].name,
+            i,
+            desktop_settings_scene_favorite_submenu_callback,
+            app);
+    }
+
+    uint32_t primary_favorite =
+        scene_manager_get_scene_state(app->scene_manager, DesktopSettingsAppSceneFavorite);
+
+    submenu_set_header(
+        app->submenu, primary_favorite ? "Primary favorite app:" : "Secondary favorite app:");
+
+    if(primary_favorite) {
+        submenu_set_selected_item(app->submenu, app->settings.favorite_primary);
+    } else {
+        submenu_set_selected_item(app->submenu, app->settings.favorite_secondary);
+    }
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewMenu);
+}
+
+bool desktop_settings_scene_favorite_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    uint32_t primary_favorite =
+        scene_manager_get_scene_state(app->scene_manager, DesktopSettingsAppSceneFavorite);
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(primary_favorite) {
+            app->settings.favorite_primary = event.event;
+        } else {
+            app->settings.favorite_secondary = event.event;
+        }
+        scene_manager_previous_scene(app->scene_manager);
+        consumed = true;
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_favorite_on_exit(void* context) {
+    DesktopSettingsApp* app = context;
+    SAVE_DESKTOP_SETTINGS(&app->settings);
+    submenu_reset(app->submenu);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_i.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#define SCENE_STATE_PIN_AUTH_DISABLE (0)
+#define SCENE_STATE_PIN_AUTH_CHANGE_PIN (1)
+
+#define SCENE_STATE_PIN_ERROR_MISMATCH (0)
+#define SCENE_STATE_PIN_ERROR_WRONG (1)

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_auth.c

@@ -0,0 +1,95 @@
+#include <stdint.h>
+#include <core/check.h>
+#include <gui/scene_manager.h>
+#include <desktop/helpers/pin_lock.h>
+#include "../desktop_settings_app.h"
+#include <desktop/desktop_settings.h>
+#include <desktop/views/desktop_view_pin_input.h>
+#include "desktop_settings_scene.h"
+#include "desktop_settings_scene_i.h"
+
+#define SCENE_EVENT_EXIT (0U)
+#define SCENE_EVENT_PINS_EQUAL (1U)
+#define SCENE_EVENT_PINS_DIFFERENT (2U)
+
+static void pin_auth_done_callback(const PinCode* pin_code, void* context) {
+    furi_assert(pin_code);
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+
+    app->pincode_buffer = *pin_code;
+    if(desktop_pins_are_equal(&app->settings.pin_code, pin_code)) {
+        view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_PINS_EQUAL);
+    } else {
+        view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_PINS_DIFFERENT);
+    }
+}
+
+static void pin_auth_back_callback(void* context) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
+}
+
+void desktop_settings_scene_pin_auth_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+
+    LOAD_DESKTOP_SETTINGS(&app->settings);
+    furi_assert(app->settings.pin_code.length > 0);
+
+    desktop_view_pin_input_set_context(app->pin_input_view, app);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, pin_auth_back_callback);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, pin_auth_done_callback);
+    desktop_view_pin_input_set_label_button(app->pin_input_view, "OK");
+    desktop_view_pin_input_set_label_primary(app->pin_input_view, 0, 0, NULL);
+    desktop_view_pin_input_set_label_secondary(
+        app->pin_input_view, 0, 8, "Enter your current PIN:");
+    desktop_view_pin_input_reset_pin(app->pin_input_view);
+    desktop_view_pin_input_unlock_input(app->pin_input_view);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinInput);
+}
+
+bool desktop_settings_scene_pin_auth_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_PINS_DIFFERENT:
+            scene_manager_set_scene_state(
+                app->scene_manager, DesktopSettingsAppScenePinError, SCENE_STATE_PIN_ERROR_WRONG);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinError);
+            consumed = true;
+            break;
+        case SCENE_EVENT_PINS_EQUAL: {
+            uint32_t state =
+                scene_manager_get_scene_state(app->scene_manager, DesktopSettingsAppScenePinAuth);
+            if(state == SCENE_STATE_PIN_AUTH_CHANGE_PIN) {
+                scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetupHowto);
+            } else if(state == SCENE_STATE_PIN_AUTH_DISABLE) {
+                scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinDisable);
+            } else {
+                furi_assert(0);
+            }
+            consumed = true;
+            break;
+        }
+        case SCENE_EVENT_EXIT:
+            scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, DesktopSettingsAppScenePinMenu);
+            consumed = true;
+            break;
+
+        default:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_auth_on_exit(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, NULL);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, NULL);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_disable.c

@@ -0,0 +1,56 @@
+#include <stdint.h>
+#include <core/check.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/popup.h>
+
+#include "../desktop_settings_app.h"
+#include <desktop/desktop_settings.h>
+#include "desktop_settings_scene.h"
+
+#define SCENE_EVENT_EXIT (0U)
+
+static void pin_disable_back_callback(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
+}
+
+void desktop_settings_scene_pin_disable_on_enter(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    app->settings.pin_code.length = 0;
+    memset(app->settings.pin_code.data, '0', sizeof(app->settings.pin_code.data));
+    SAVE_DESKTOP_SETTINGS(&app->settings);
+
+    popup_set_context(app->popup, app);
+    popup_set_callback(app->popup, pin_disable_back_callback);
+    popup_set_icon(app->popup, 0, 2, &I_DolphinMafia_115x62);
+    popup_set_header(app->popup, "PIN\ndeleted!", 95, 9, AlignCenter, AlignCenter);
+    popup_set_timeout(app->popup, 1500);
+    popup_enable_timeout(app->popup);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPopup);
+}
+
+bool desktop_settings_scene_pin_disable_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_EXIT:
+            scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, DesktopSettingsAppScenePinMenu);
+            consumed = true;
+            break;
+
+        default:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_disable_on_exit(void* context) {
+    UNUSED(context);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_error.c

@@ -0,0 +1,77 @@
+#include <stdint.h>
+#include <core/check.h>
+#include <gui/scene_manager.h>
+
+#include <desktop/desktop_settings.h>
+#include <desktop/views/desktop_view_pin_input.h>
+#include "desktop_settings_scene.h"
+#include "desktop_settings_scene_i.h"
+#include <desktop/helpers/pin_lock.h>
+#include "../desktop_settings_app.h"
+
+#define SCENE_EVENT_EXIT (0U)
+
+static void pin_error_back_callback(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
+}
+
+static void pin_error_done_callback(const PinCode* pin_code, void* context) {
+    UNUSED(pin_code);
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
+}
+
+void desktop_settings_scene_pin_error_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+    desktop_pin_lock_error_notify();
+
+    desktop_view_pin_input_set_context(app->pin_input_view, app);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, pin_error_back_callback);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, pin_error_done_callback);
+
+    uint32_t state =
+        scene_manager_get_scene_state(app->scene_manager, DesktopSettingsAppScenePinError);
+    if(state == SCENE_STATE_PIN_ERROR_MISMATCH) {
+        desktop_view_pin_input_set_label_primary(app->pin_input_view, 29, 8, "PIN mismatch!");
+    } else if(state == SCENE_STATE_PIN_ERROR_WRONG) {
+        desktop_view_pin_input_set_label_primary(app->pin_input_view, 35, 8, "Wrong PIN!");
+    } else {
+        furi_assert(0);
+    }
+    desktop_view_pin_input_set_label_secondary(app->pin_input_view, 0, 8, NULL);
+    desktop_view_pin_input_set_label_button(app->pin_input_view, "Retry");
+    desktop_view_pin_input_lock_input(app->pin_input_view);
+    desktop_view_pin_input_set_pin(app->pin_input_view, &app->pincode_buffer);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinInput);
+}
+
+bool desktop_settings_scene_pin_error_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_EXIT:
+            scene_manager_previous_scene(app->scene_manager);
+            consumed = true;
+            break;
+
+        default:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_error_on_exit(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    desktop_view_pin_input_unlock_input(app->pin_input_view);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, NULL);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, NULL);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_menu.c

@@ -0,0 +1,86 @@
+#include <gui/scene_manager.h>
+#include <applications.h>
+
+#include "../desktop_settings_app.h"
+#include "desktop_settings_scene.h"
+#include "desktop_settings_scene_i.h"
+
+#define SCENE_EVENT_SET_PIN 0
+#define SCENE_EVENT_CHANGE_PIN 1
+#define SCENE_EVENT_DISABLE_PIN 2
+
+static void desktop_settings_scene_pin_menu_submenu_callback(void* context, uint32_t index) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void desktop_settings_scene_pin_menu_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+    Submenu* submenu = app->submenu;
+    submenu_reset(submenu);
+
+    if(!app->settings.pin_code.length) {
+        submenu_add_item(
+            submenu,
+            "Set Pin",
+            SCENE_EVENT_SET_PIN,
+            desktop_settings_scene_pin_menu_submenu_callback,
+            app);
+
+    } else {
+        submenu_add_item(
+            submenu,
+            "Change Pin",
+            SCENE_EVENT_CHANGE_PIN,
+            desktop_settings_scene_pin_menu_submenu_callback,
+            app);
+
+        submenu_add_item(
+            submenu,
+            "Disable",
+            SCENE_EVENT_DISABLE_PIN,
+            desktop_settings_scene_pin_menu_submenu_callback,
+            app);
+    }
+
+    submenu_set_header(app->submenu, "Pin code settings:");
+    submenu_set_selected_item(app->submenu, app->menu_idx);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewMenu);
+}
+
+bool desktop_settings_scene_pin_menu_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_SET_PIN:
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetupHowto);
+            consumed = true;
+            break;
+        case SCENE_EVENT_CHANGE_PIN:
+            scene_manager_set_scene_state(
+                app->scene_manager,
+                DesktopSettingsAppScenePinAuth,
+                SCENE_STATE_PIN_AUTH_CHANGE_PIN);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinAuth);
+            consumed = true;
+            break;
+        case SCENE_EVENT_DISABLE_PIN:
+            scene_manager_set_scene_state(
+                app->scene_manager, DesktopSettingsAppScenePinAuth, SCENE_STATE_PIN_AUTH_DISABLE);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinAuth);
+            consumed = true;
+            break;
+        default:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_menu_on_exit(void* context) {
+    DesktopSettingsApp* app = context;
+    submenu_reset(app->submenu);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_setup.c

@@ -0,0 +1,108 @@
+#include <stdint.h>
+#include <core/check.h>
+#include <gui/scene_manager.h>
+
+#include "../desktop_settings_app.h"
+#include <desktop/desktop_settings.h>
+#include <desktop/views/desktop_view_pin_input.h>
+#include "desktop_settings_scene.h"
+#include "desktop_settings_scene_i.h"
+#include <desktop/helpers/pin_lock.h>
+
+#define SCENE_EVENT_EXIT (0U)
+#define SCENE_EVENT_1ST_PIN_ENTERED (1U)
+#define SCENE_EVENT_PINS_EQUAL (2U)
+#define SCENE_EVENT_PINS_DIFFERENT (3U)
+
+static void pin_setup_done_callback(const PinCode* pin_code, void* context) {
+    furi_assert(pin_code);
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+
+    if(!app->pincode_buffer_filled) {
+        app->pincode_buffer = *pin_code;
+        app->pincode_buffer_filled = true;
+        view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_1ST_PIN_ENTERED);
+    } else {
+        app->pincode_buffer_filled = false;
+        if(desktop_pins_are_equal(&app->pincode_buffer, pin_code)) {
+            view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_PINS_EQUAL);
+        } else {
+            view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_PINS_DIFFERENT);
+        }
+    }
+}
+
+static void pin_setup_back_callback(void* context) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
+}
+
+void desktop_settings_scene_pin_setup_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+
+    app->pincode_buffer_filled = false;
+    desktop_view_pin_input_set_context(app->pin_input_view, app);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, pin_setup_back_callback);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, pin_setup_done_callback);
+    desktop_view_pin_input_set_label_button(app->pin_input_view, "OK");
+    desktop_view_pin_input_set_label_primary(app->pin_input_view, 0, 0, NULL);
+    desktop_view_pin_input_set_label_secondary(
+        app->pin_input_view, 0, 8, "Enter from 4 to 10 arrows:");
+    desktop_view_pin_input_reset_pin(app->pin_input_view);
+    desktop_view_pin_input_unlock_input(app->pin_input_view);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinInput);
+}
+
+bool desktop_settings_scene_pin_setup_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_1ST_PIN_ENTERED:
+            desktop_view_pin_input_set_label_button(app->pin_input_view, "OK");
+            desktop_view_pin_input_set_label_primary(app->pin_input_view, 0, 0, NULL);
+            desktop_view_pin_input_set_label_secondary(
+                app->pin_input_view, 0, 8, "Confirm your PIN:");
+            desktop_view_pin_input_reset_pin(app->pin_input_view);
+            desktop_view_pin_input_unlock_input(app->pin_input_view);
+            consumed = true;
+            break;
+        case SCENE_EVENT_PINS_DIFFERENT:
+            scene_manager_set_scene_state(
+                app->scene_manager,
+                DesktopSettingsAppScenePinError,
+                SCENE_STATE_PIN_ERROR_MISMATCH);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinError);
+            consumed = true;
+            break;
+        case SCENE_EVENT_PINS_EQUAL:
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetupHowto2);
+            consumed = true;
+            break;
+        case SCENE_EVENT_EXIT: {
+            uint32_t scene_found;
+            scene_found = scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, DesktopSettingsAppScenePinMenu);
+            if(!scene_found) {
+                view_dispatcher_stop(app->view_dispatcher);
+            }
+            consumed = true;
+            break;
+        }
+
+        default:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_setup_on_exit(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, NULL);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, NULL);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_setup_done.c

@@ -0,0 +1,77 @@
+#include <furi.h>
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+#include <stdint.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+
+#include "../desktop_settings_app.h"
+#include <desktop/desktop_settings.h>
+#include <desktop/views/desktop_view_pin_input.h>
+#include "desktop_settings_scene.h"
+
+#define SCENE_EVENT_DONE (0U)
+
+static void pin_setup_done_callback(const PinCode* pin_code, void* context) {
+    furi_assert(pin_code);
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_DONE);
+}
+
+void desktop_settings_scene_pin_setup_done_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+
+    app->settings.pin_code = app->pincode_buffer;
+    SAVE_DESKTOP_SETTINGS(&app->settings);
+    NotificationApp* notification = furi_record_open(RECORD_NOTIFICATION);
+    notification_message(notification, &sequence_single_vibro);
+    furi_record_close(RECORD_NOTIFICATION);
+
+    desktop_view_pin_input_set_context(app->pin_input_view, app);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, NULL);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, pin_setup_done_callback);
+    desktop_view_pin_input_set_pin(app->pin_input_view, &app->settings.pin_code);
+    desktop_view_pin_input_set_label_button(app->pin_input_view, "Done");
+    desktop_view_pin_input_set_label_primary(app->pin_input_view, 29, 8, "PIN activated!");
+    desktop_view_pin_input_set_label_secondary(
+        app->pin_input_view, 7, 45, "Remember or write it down");
+    desktop_view_pin_input_lock_input(app->pin_input_view);
+    desktop_view_pin_input_set_pin_position(app->pin_input_view, 64, 24);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinInput);
+}
+
+bool desktop_settings_scene_pin_setup_done_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_DONE: {
+            bool scene_found = false;
+            scene_found = scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, DesktopSettingsAppScenePinMenu);
+            if(!scene_found) {
+                view_dispatcher_stop(app->view_dispatcher);
+            }
+            consumed = true;
+            break;
+        }
+        default:
+            consumed = true;
+            break;
+        }
+    } else if(event.type == SceneManagerEventTypeBack) {
+        consumed = true;
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_setup_done_on_exit(void* context) {
+    furi_assert(context);
+    DesktopSettingsApp* app = context;
+    desktop_view_pin_input_set_pin_position(app->pin_input_view, 64, 32);
+    desktop_view_pin_input_set_back_callback(app->pin_input_view, NULL);
+    desktop_view_pin_input_set_done_callback(app->pin_input_view, NULL);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto.c

@@ -0,0 +1,45 @@
+#include <furi.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+
+#include "desktop_settings_scene.h"
+#include "../desktop_settings_app.h"
+#include "../views/desktop_settings_view_pin_setup_howto.h"
+
+#define SCENE_EXIT_EVENT (0U)
+
+static void desktop_settings_scene_pin_lock_done_callback(void* context) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EXIT_EVENT);
+}
+
+void desktop_settings_scene_pin_setup_howto_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+
+    desktop_settings_view_pin_setup_howto_set_callback(
+        app->pin_setup_howto_view, desktop_settings_scene_pin_lock_done_callback, app);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinSetupHowto);
+}
+
+bool desktop_settings_scene_pin_setup_howto_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EXIT_EVENT:
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetup);
+            consumed = true;
+            break;
+        default:
+            furi_assert(0);
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_setup_howto_on_exit(void* context) {
+    UNUSED(context);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto2.c

@@ -0,0 +1,67 @@
+#include <furi.h>
+#include <gui/scene_manager.h>
+#include <stdint.h>
+
+#include "desktop_settings_scene.h"
+#include "../desktop_settings_app.h"
+#include "../views/desktop_settings_view_pin_setup_howto2.h"
+
+#define SCENE_EXIT_EVENT (0U)
+#define SCENE_DONE_EVENT (1U)
+
+static void desktop_settings_scene_pin_setup_howto2_done_callback(void* context) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_DONE_EVENT);
+}
+
+static void desktop_settings_scene_pin_setup_howto2_exit_callback(void* context) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EXIT_EVENT);
+}
+
+void desktop_settings_scene_pin_setup_howto2_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+
+    desktop_settings_view_pin_setup_howto2_set_context(app->pin_setup_howto2_view, app);
+    desktop_settings_view_pin_setup_howto2_set_ok_callback(
+        app->pin_setup_howto2_view, desktop_settings_scene_pin_setup_howto2_done_callback);
+    desktop_settings_view_pin_setup_howto2_set_cancel_callback(
+        app->pin_setup_howto2_view, desktop_settings_scene_pin_setup_howto2_exit_callback);
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewIdPinSetupHowto2);
+}
+
+bool desktop_settings_scene_pin_setup_howto2_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_DONE_EVENT: {
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinSetupDone);
+            consumed = true;
+            break;
+        }
+        case SCENE_EXIT_EVENT: {
+            bool scene_found = false;
+            scene_found = scene_manager_search_and_switch_to_previous_scene(
+                app->scene_manager, DesktopSettingsAppScenePinMenu);
+            if(!scene_found) {
+                view_dispatcher_stop(app->view_dispatcher);
+            }
+            consumed = true;
+            break;
+        }
+        default:
+            furi_assert(0);
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_pin_setup_howto2_on_exit(void* context) {
+    DesktopSettingsApp* app = context;
+    desktop_settings_view_pin_setup_howto2_set_ok_callback(app->pin_setup_howto2_view, NULL);
+    desktop_settings_view_pin_setup_howto2_set_cancel_callback(app->pin_setup_howto2_view, NULL);
+}

applications/settings/desktop_settings/scenes/desktop_settings_scene_start.c

@@ -0,0 +1,100 @@
+#include <applications.h>
+#include <lib/toolbox/value_index.h>
+
+#include "../desktop_settings_app.h"
+#include "desktop_settings_scene.h"
+
+#define SCENE_EVENT_SELECT_FAVORITE_PRIMARY 0
+#define SCENE_EVENT_SELECT_FAVORITE_SECONDARY 1
+#define SCENE_EVENT_SELECT_PIN_SETUP 2
+#define SCENE_EVENT_SELECT_AUTO_LOCK_DELAY 3
+
+#define AUTO_LOCK_DELAY_COUNT 6
+const char* const auto_lock_delay_text[AUTO_LOCK_DELAY_COUNT] = {
+    "OFF",
+    "30s",
+    "60s",
+    "2min",
+    "5min",
+    "10min",
+};
+
+const uint32_t auto_lock_delay_value[AUTO_LOCK_DELAY_COUNT] =
+    {0, 30000, 60000, 120000, 300000, 600000};
+
+static void desktop_settings_scene_start_var_list_enter_callback(void* context, uint32_t index) {
+    DesktopSettingsApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+static void desktop_settings_scene_start_auto_lock_delay_changed(VariableItem* item) {
+    DesktopSettingsApp* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+
+    variable_item_set_current_value_text(item, auto_lock_delay_text[index]);
+    app->settings.auto_lock_delay_ms = auto_lock_delay_value[index];
+}
+
+void desktop_settings_scene_start_on_enter(void* context) {
+    DesktopSettingsApp* app = context;
+    VariableItemList* variable_item_list = app->variable_item_list;
+
+    VariableItem* item;
+    uint8_t value_index;
+
+    variable_item_list_add(variable_item_list, "Primary Favorite App", 1, NULL, NULL);
+
+    variable_item_list_add(variable_item_list, "Secondary Favorite App", 1, NULL, NULL);
+
+    variable_item_list_add(variable_item_list, "PIN Setup", 1, NULL, NULL);
+
+    item = variable_item_list_add(
+        variable_item_list,
+        "Auto Lock Time",
+        AUTO_LOCK_DELAY_COUNT,
+        desktop_settings_scene_start_auto_lock_delay_changed,
+        app);
+
+    variable_item_list_set_enter_callback(
+        variable_item_list, desktop_settings_scene_start_var_list_enter_callback, app);
+    value_index = value_index_uint32(
+        app->settings.auto_lock_delay_ms, auto_lock_delay_value, AUTO_LOCK_DELAY_COUNT);
+    variable_item_set_current_value_index(item, value_index);
+    variable_item_set_current_value_text(item, auto_lock_delay_text[value_index]);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DesktopSettingsAppViewVarItemList);
+}
+
+bool desktop_settings_scene_start_on_event(void* context, SceneManagerEvent event) {
+    DesktopSettingsApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case SCENE_EVENT_SELECT_FAVORITE_PRIMARY:
+            scene_manager_set_scene_state(app->scene_manager, DesktopSettingsAppSceneFavorite, 1);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppSceneFavorite);
+            consumed = true;
+            break;
+        case SCENE_EVENT_SELECT_FAVORITE_SECONDARY:
+            scene_manager_set_scene_state(app->scene_manager, DesktopSettingsAppSceneFavorite, 0);
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppSceneFavorite);
+            consumed = true;
+            break;
+        case SCENE_EVENT_SELECT_PIN_SETUP:
+            scene_manager_next_scene(app->scene_manager, DesktopSettingsAppScenePinMenu);
+            consumed = true;
+            break;
+        case SCENE_EVENT_SELECT_AUTO_LOCK_DELAY:
+            consumed = true;
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_settings_scene_start_on_exit(void* context) {
+    DesktopSettingsApp* app = context;
+    variable_item_list_reset(app->variable_item_list);
+    SAVE_DESKTOP_SETTINGS(&app->settings);
+}

applications/settings/desktop_settings/views/desktop_settings_view_pin_setup_howto.c

@@ -0,0 +1,78 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/elements.h>
+#include <gui/canvas.h>
+#include <toolbox/version.h>
+#include <assets_icons.h>
+#include <dolphin/helpers/dolphin_state.h>
+#include <dolphin/dolphin.h>
+
+#include "desktop_settings_view_pin_setup_howto.h"
+
+struct DesktopSettingsViewPinSetupHowto {
+    View* view;
+    DesktopSettingsViewPinSetupHowtoDoneCallback callback;
+    void* context;
+};
+
+static void desktop_settings_view_pin_setup_howto_draw(Canvas* canvas, void* model) {
+    furi_assert(canvas);
+    furi_assert(model);
+
+    canvas_draw_icon(canvas, 16, 18, &I_Pin_attention_dpad_29x29);
+    elements_button_right(canvas, "Next");
+
+    canvas_set_font(canvas, FontPrimary);
+    elements_multiline_text_aligned(canvas, 64, 0, AlignCenter, AlignTop, "Setting up PIN");
+
+    canvas_set_font(canvas, FontSecondary);
+    elements_multiline_text(canvas, 58, 24, "Prepare to use\narrows as\nPIN symbols");
+}
+
+static bool desktop_settings_view_pin_setup_howto_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopSettingsViewPinSetupHowto* instance = context;
+    bool consumed = false;
+
+    if((event->key == InputKeyRight) && (event->type == InputTypeShort)) {
+        instance->callback(instance->context);
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void desktop_settings_view_pin_setup_howto_set_callback(
+    DesktopSettingsViewPinSetupHowto* instance,
+    DesktopSettingsViewPinSetupHowtoDoneCallback callback,
+    void* context) {
+    furi_assert(instance);
+    furi_assert(callback);
+    instance->callback = callback;
+    instance->context = context;
+}
+
+DesktopSettingsViewPinSetupHowto* desktop_settings_view_pin_setup_howto_alloc() {
+    DesktopSettingsViewPinSetupHowto* view = malloc(sizeof(DesktopSettingsViewPinSetupHowto));
+    view->view = view_alloc();
+    view_allocate_model(view->view, ViewModelTypeLockFree, 1);
+    view_set_context(view->view, view);
+    view_set_draw_callback(view->view, desktop_settings_view_pin_setup_howto_draw);
+    view_set_input_callback(view->view, desktop_settings_view_pin_setup_howto_input);
+
+    return view;
+}
+
+void desktop_settings_view_pin_setup_howto_free(DesktopSettingsViewPinSetupHowto* instance) {
+    furi_assert(instance);
+
+    view_free(instance->view);
+    free(instance);
+}
+
+View* desktop_settings_view_pin_setup_howto_get_view(DesktopSettingsViewPinSetupHowto* instance) {
+    furi_assert(instance);
+    return instance->view;
+}

applications/settings/desktop_settings/views/desktop_settings_view_pin_setup_howto.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <gui/view.h>
+
+typedef struct DesktopSettingsViewPinSetupHowto DesktopSettingsViewPinSetupHowto;
+
+typedef void (*DesktopSettingsViewPinSetupHowtoDoneCallback)(void*);
+
+void desktop_settings_view_pin_setup_howto_set_callback(
+    DesktopSettingsViewPinSetupHowto* instance,
+    DesktopSettingsViewPinSetupHowtoDoneCallback callback,
+    void* context);
+DesktopSettingsViewPinSetupHowto* desktop_settings_view_pin_setup_howto_alloc();
+void desktop_settings_view_pin_setup_howto_free(DesktopSettingsViewPinSetupHowto* instance);
+View* desktop_settings_view_pin_setup_howto_get_view(DesktopSettingsViewPinSetupHowto* instance);

applications/settings/desktop_settings/views/desktop_settings_view_pin_setup_howto2.c

@@ -0,0 +1,100 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/elements.h>
+#include <gui/canvas.h>
+#include <toolbox/version.h>
+#include <assets_icons.h>
+#include <dolphin/helpers/dolphin_state.h>
+#include <dolphin/dolphin.h>
+
+#include "desktop_settings_view_pin_setup_howto2.h"
+
+struct DesktopSettingsViewPinSetupHowto2 {
+    View* view;
+    DesktopSettingsViewPinSetupHowto2Callback cancel_callback;
+    DesktopSettingsViewPinSetupHowto2Callback ok_callback;
+    void* context;
+};
+
+static void desktop_settings_view_pin_setup_howto2_draw(Canvas* canvas, void* model) {
+    furi_assert(canvas);
+    furi_assert(model);
+
+    canvas_set_font(canvas, FontSecondary);
+    elements_multiline_text_aligned(
+        canvas,
+        64,
+        24,
+        AlignCenter,
+        AlignCenter,
+        "Forgotten PIN can only be\n"
+        "reset with entire device.\n"
+        "Read docs How to reset PIN.");
+
+    elements_button_right(canvas, "OK");
+    elements_button_left(canvas, "Cancel");
+}
+
+static bool desktop_settings_view_pin_setup_howto2_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopSettingsViewPinSetupHowto2* instance = context;
+    bool consumed = false;
+
+    if(event->type == InputTypeShort) {
+        if(event->key == InputKeyRight) {
+            instance->ok_callback(instance->context);
+            consumed = true;
+        } else if(event->key == InputKeyLeft) {
+            instance->cancel_callback(instance->context);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_settings_view_pin_setup_howto2_set_context(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    void* context) {
+    furi_assert(instance);
+    instance->context = context;
+}
+
+void desktop_settings_view_pin_setup_howto2_set_cancel_callback(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    DesktopSettingsViewPinSetupHowto2Callback callback) {
+    furi_assert(instance);
+    instance->cancel_callback = callback;
+}
+
+void desktop_settings_view_pin_setup_howto2_set_ok_callback(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    DesktopSettingsViewPinSetupHowto2Callback callback) {
+    furi_assert(instance);
+    instance->ok_callback = callback;
+}
+
+DesktopSettingsViewPinSetupHowto2* desktop_settings_view_pin_setup_howto2_alloc() {
+    DesktopSettingsViewPinSetupHowto2* view = malloc(sizeof(DesktopSettingsViewPinSetupHowto2));
+    view->view = view_alloc();
+    view_allocate_model(view->view, ViewModelTypeLockFree, 1);
+    view_set_context(view->view, view);
+    view_set_draw_callback(view->view, desktop_settings_view_pin_setup_howto2_draw);
+    view_set_input_callback(view->view, desktop_settings_view_pin_setup_howto2_input);
+
+    return view;
+}
+
+void desktop_settings_view_pin_setup_howto2_free(DesktopSettingsViewPinSetupHowto2* instance) {
+    furi_assert(instance);
+
+    view_free(instance->view);
+    free(instance);
+}
+
+View* desktop_settings_view_pin_setup_howto2_get_view(DesktopSettingsViewPinSetupHowto2* instance) {
+    furi_assert(instance);
+    return instance->view;
+}

applications/settings/desktop_settings/views/desktop_settings_view_pin_setup_howto2.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <gui/view.h>
+
+typedef struct DesktopSettingsViewPinSetupHowto2 DesktopSettingsViewPinSetupHowto2;
+
+typedef void (*DesktopSettingsViewPinSetupHowto2Callback)(void*);
+
+DesktopSettingsViewPinSetupHowto2* desktop_settings_view_pin_setup_howto2_alloc();
+void desktop_settings_view_pin_setup_howto2_free(DesktopSettingsViewPinSetupHowto2* instance);
+View* desktop_settings_view_pin_setup_howto2_get_view(DesktopSettingsViewPinSetupHowto2* instance);
+void desktop_settings_view_pin_setup_howto2_set_context(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    void* context);
+void desktop_settings_view_pin_setup_howto2_set_cancel_callback(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    DesktopSettingsViewPinSetupHowto2Callback callback);
+void desktop_settings_view_pin_setup_howto2_set_ok_callback(
+    DesktopSettingsViewPinSetupHowto2* instance,
+    DesktopSettingsViewPinSetupHowto2Callback callback);