added data partitions and app loading logic

README.md

@@ -46,6 +46,7 @@ Predefined configurations are available for:
 - SSD1963
 - ST7262E43
 - ST7789
+- ST7796 
  
 **Touch** (see [Espressif Registry](https://components.espressif.com/components?q=esp_lcd_touch)):
 - CST8xx

components/furi/src/app.c

@@ -5,40 +5,9 @@
 
 #define TAG "app"
 
-const char* prv_type_service = "service";
-const char* prv_type_system = "system";
-const char* prv_type_user = "user";
-
-static FuriThreadPriority get_thread_priority(AppType type) {
-    switch (type) {
-        case AppTypeService:
-            return FuriThreadPriorityHighest;
-        case AppTypeSystem:
-            return FuriThreadPriorityHigh;
-        case AppTypeUser:
-            return FuriThreadPriorityNormal;
-        default:
-            furi_crash("no priority defined for app type");
-    }
-}
-
-const char* furi_app_type_to_string(AppType type) {
-    switch (type) {
-        case AppTypeService:
-            return prv_type_service;
-        case AppTypeSystem:
-            return prv_type_system;
-        case AppTypeUser:
-            return prv_type_user;
-        default:
-            furi_crash();
-    }
-}
-
 App* furi_app_alloc(const AppManifest* _Nonnull manifest) {
     App app = {
         .manifest = manifest,
-        .thread = NULL,
         .ep_thread_args = NULL
     };
     App* app_ptr = malloc(sizeof(App));
@@ -48,11 +17,6 @@ App* furi_app_alloc(const AppManifest* _Nonnull manifest) {
 void furi_app_free(App* app) {
     furi_assert(app);
 
-    if(app->thread) {
-        furi_thread_join(app->thread);
-        furi_thread_free(app->thread);
-    }
-
     if (app->ep_thread_args) {
         free(app->ep_thread_args);
         app->ep_thread_args = NULL;
@@ -60,43 +24,3 @@ void furi_app_free(App* app) {
 
     free(app);
 }
-
-FuriThread* furi_app_alloc_thread(App _Nonnull* app, const char* args) {
-    FURI_LOG_I(
-        TAG,
-        "Starting %s app \"%s\"",
-        furi_app_type_to_string(app->manifest->type),
-        app->manifest->name
-    );
-
-    // Free any previous app launching arguments
-    if (app->ep_thread_args) {
-        free(app->ep_thread_args);
-    }
-
-    if (args) {
-        app->ep_thread_args = strdup(args);
-    } else {
-        app->ep_thread_args = NULL;
-    }
-
-    FuriThread* thread = furi_thread_alloc_ex(
-        app->manifest->name,
-        app->manifest->stack_size,
-        app->manifest->entry_point,
-        app
-    );
-
-    if (app->manifest->type == AppTypeService) {
-        furi_thread_mark_as_service(thread);
-    }
-
-    FuriString* app_name = furi_string_alloc();
-    furi_thread_set_appid(thread, furi_string_get_cstr(app_name));
-    furi_string_free(app_name);
-
-    FuriThreadPriority priority = get_thread_priority(app->manifest->type);
-    furi_thread_set_priority(thread, priority);
-
-    return thread;
-}

components/furi/src/app_i.h

@@ -8,7 +8,6 @@ extern "C" {
 #endif
 
 typedef struct {
-    FuriThread* thread;
     const AppManifest* manifest;
     void* ep_thread_args;
 } App;

components/furi/src/app_manifest.h

@@ -6,6 +6,9 @@
 extern "C" {
 #endif
 
+// Forward declarations
+typedef struct _lv_obj_t lv_obj_t;
+
 typedef enum {
     AppTypeService,
     AppTypeSystem,
@@ -16,14 +19,49 @@ typedef enum {
     AppStackSizeNormal = 2048
 } AppStackSize;
 
-typedef int32_t (*AppEntryPoint)(void _Nonnull* parameter);
+typedef void (*AppOnStart)(void _Nonnull* parameter);
+typedef void (*AppOnStop)();
+typedef void (*AppOnShow)(lv_obj_t* parent, void* context);
 
 typedef struct {
+    /**
+     * The identifier by which the app is launched by the system and other apps.
+     */
     const char* _Nonnull id;
+
+    /**
+     * The user-readable name of the app. Used in UI.
+     */
     const char* _Nonnull name;
+
+    /**
+     * Optional icon.
+     */
     const char* _Nullable icon;
+
+    /**
+     * App type affects launch behaviour.
+     */
     const AppType type;
-    const AppEntryPoint _Nullable entry_point;
+
+    /**
+     * Non-blocking method to call when app is started.
+     */
+    const AppOnStart _Nullable on_start;
+
+    /**
+     * Non-blocking method to call when app is stopped.
+     */
+    const AppOnStop _Nullable on_stop;
+
+    /**
+     * Non-blocking method to create the GUI
+     */
+    const AppOnShow _Nullable on_show;
+
+    /**
+     * Callstack size. If you get a stackoverflow, then consider increasing this value.
+     */
     const AppStackSize stack_size;
 } AppManifest;
 

components/furi/src/furi.c

@@ -5,14 +5,11 @@
 #include <freertos/FreeRTOS.h>
 #include <freertos/queue.h>
 
-static bool scheduler_was_running = false;
-
 void furi_init() {
     furi_assert(!furi_kernel_is_irq());
 
     if (xTaskGetSchedulerState() == taskSCHEDULER_RUNNING) {
         vTaskSuspendAll();
-        scheduler_was_running = true;
     }
 
     furi_record_init();

components/nanobake/CMakeLists.txt

@@ -5,5 +5,11 @@ idf_component_register(
     "src/apps/services/loader"
     "src/apps/services/gui"
     INCLUDE_DIRS "src"
-    REQUIRES esp_lvgl_port esp_lcd esp_lcd_touch driver mlib cmsis_core furi
+    REQUIRES esp_lvgl_port esp_lcd esp_lcd_touch driver mlib cmsis_core furi nvs_flash spiffs fatfs
 )
+
+set(ASSETS_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/assets")
+spiffs_create_partition_image(assets ${ASSETS_SRC_DIR} FLASH_IN_PROJECT)
+
+set(CONFIG_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/config")
+spiffs_create_partition_image(config ${CONFIG_SRC_DIR} FLASH_IN_PROJECT)

components/nanobake/src/apps/services/desktop/desktop.c

@@ -1,10 +1,9 @@
 #include "desktop.h"
 #include "furi_extra_defines.h"
 
-static int32_t prv_desktop_main(void* param) {
+static void desktop_start(void* param) {
     UNUSED(param);
     printf("desktop app init\n");
-    return 0;
 }
 
 const AppManifest desktop_app = {
@@ -12,6 +11,8 @@ const AppManifest desktop_app = {
     .name = "Desktop",
     .icon = NULL,
     .type = AppTypeService,
-    .entry_point = &prv_desktop_main,
+    .on_start = &desktop_start,
+    .on_stop = NULL,
+    .on_show = NULL,
     .stack_size = AppStackSizeNormal
 };

components/nanobake/src/apps/services/gui/gui.c

@@ -2,13 +2,15 @@
 #include "esp_lvgl_port.h"
 #include "furi_extra_defines.h"
 #include "gui_i.h"
+#include "log.h"
 #include "record.h"
 
 #define TAG "gui"
 
 // Forward declarations from gui_draw.c
-bool gui_redraw_fs(Gui* gui);
+bool gui_redraw_fs(Gui*);
-void gui_redraw(Gui* gui);
+void gui_redraw(Gui*);
+static int32_t gui_main(void*);
 
 ViewPort* gui_view_port_find_enabled(ViewPortArray_t array) {
     // Iterating backward
@@ -17,6 +19,7 @@ ViewPort* gui_view_port_find_enabled(ViewPortArray_t array) {
     while (!ViewPortArray_end_p(it)) {
         ViewPort* view_port = *ViewPortArray_ref(it);
         if (view_port_is_enabled(view_port)) {
+            ViewPort* view_port = *ViewPortArray_ref(it);
             return view_port;
         }
         ViewPortArray_previous(it);
@@ -45,9 +48,10 @@ size_t gui_active_view_port_count(Gui* gui, GuiLayer layer) {
 }
 
 void gui_update(Gui* gui) {
-    ESP_LOGI(TAG, "gui_update");
     furi_assert(gui);
-    furi_thread_flags_set(gui->thread_id, GUI_THREAD_FLAG_DRAW);
+
+    FuriThreadId thread_id = furi_thread_get_id(gui->thread);
+    furi_thread_flags_set(thread_id, GUI_THREAD_FLAG_DRAW);
 }
 
 void gui_lock(Gui* gui) {
@@ -170,28 +174,20 @@ void gui_view_port_send_to_back(Gui* gui, ViewPort* view_port) {
     gui_update(gui);
 }
 
-void gui_set_lockdown(Gui* gui, bool lockdown) {
-    furi_assert(gui);
-
-    gui_lock(gui);
-    gui->lockdown = lockdown;
-    gui_unlock(gui);
-
-    // Request redraw
-    gui_update(gui);
-}
-
 Gui* gui_alloc() {
     Gui* gui = malloc(sizeof(Gui));
-    gui->thread_id = furi_thread_get_current_id();
+    gui->thread = furi_thread_alloc_ex(
+        "gui",
+        2048,
+        &gui_main,
+        NULL
+    );
     gui->mutex = furi_mutex_alloc(FuriMutexTypeNormal);
 
     furi_check(lvgl_port_lock(100));
     gui->lvgl_parent = lv_scr_act();
     lvgl_port_unlock();
 
-    gui->lockdown = false;
-    furi_check(gui->mutex);
     for (size_t i = 0; i < GuiLayerMAX; i++) {
         ViewPortArray_init(gui->layers[i]);
     }
@@ -207,11 +203,22 @@ Gui* gui_alloc() {
     return gui;
 }
 
-__attribute((__noreturn__)) int32_t prv_gui_main(void* parameter) {
+void gui_free(Gui* gui) {
-    UNUSED(parameter);
+    furi_thread_free(gui->thread);
-    Gui* gui = gui_alloc();
 
-    furi_record_create(RECORD_GUI, gui);
+    if (gui->mutex) {
+        furi_mutex_free(gui->mutex);
+    }
+
+    for (size_t i = 0; i < GuiLayerMAX; i++) {
+        ViewPortArray_clear(gui->layers[i]);
+    }
+
+    free(gui);
+}
+
+static int32_t gui_main(void* parameter) {
+    UNUSED(parameter);
 
     while (1) {
         uint32_t flags = furi_thread_flags_wait(
@@ -229,11 +236,45 @@ __attribute((__noreturn__)) int32_t prv_gui_main(void* parameter) {
         }*/
         // Process and dispatch draw call
         if (flags & GUI_THREAD_FLAG_DRAW) {
-            // Clear flags that arrived on input step
+            FURI_LOG_D(TAG, "redraw requested");
             furi_thread_flags_clear(GUI_THREAD_FLAG_DRAW);
-            gui_redraw(gui);
+            FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
+                gui_redraw(gui);
+            })
+        }
+
+        if (flags & GUI_THREAD_FLAG_EXIT) {
+            furi_thread_flags_clear(GUI_THREAD_FLAG_EXIT);
+            break;
         }
     }
+
+    return 0;
+}
+
+static void gui_start(void* parameter) {
+    UNUSED(parameter);
+
+    Gui* gui = gui_alloc();
+    furi_record_create(RECORD_GUI, gui);
+    furi_thread_set_priority(gui->thread, FuriThreadPriorityHigh);
+    furi_thread_start(gui->thread);
+}
+
+static void gui_stop() {
+    FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
+        gui_lock(gui);
+
+        FuriThreadId thread_id = furi_thread_get_id(gui->thread);
+        furi_thread_flags_set(thread_id, GUI_THREAD_FLAG_EXIT);
+        furi_thread_join(gui->thread);
+
+        gui_unlock(gui);
+
+        gui_free(gui);
+    })
+
+    furi_record_destroy(RECORD_GUI);
 }
 
 const AppManifest gui_app = {
@@ -241,6 +282,8 @@ const AppManifest gui_app = {
     .name = "GUI",
     .icon = NULL,
     .type = AppTypeService,
-    .entry_point = &prv_gui_main,
+    .on_start = &gui_start,
+    .on_stop = &gui_stop,
+    .on_show = NULL,
     .stack_size = AppStackSizeNormal
 };

components/nanobake/src/apps/services/gui/gui.h

@@ -71,16 +71,6 @@ void gui_view_port_send_to_front(Gui* gui, ViewPort* view_port);
  */
 void gui_view_port_send_to_back(Gui* gui, ViewPort* view_port);
 
-/** Set lockdown mode
- *
- * When lockdown mode is enabled, only GuiLayerDesktop is shown.
- * This feature prevents services from showing sensitive information when flipper is locked.
- *
- * @param      gui       Gui instance
- * @param      lockdown  bool, true if enabled
- */
-void gui_set_lockdown(Gui* gui, bool lockdown);
-
 #ifdef __cplusplus
 }
 #endif

components/nanobake/src/apps/services/gui/gui_draw.c

@@ -1,5 +1,6 @@
 #include "check.h"
 #include "gui_i.h"
+#include "esp_lvgl_port.h"
 
 static void gui_redraw_status_bar(Gui* gui, bool need_attention) {
     /*
@@ -188,24 +189,16 @@ void gui_redraw(Gui* gui) {
     furi_assert(gui);
     gui_lock(gui);
 
+    furi_check(lvgl_port_lock(100));
     lv_obj_clean(gui->lvgl_parent);
+    lvgl_port_unlock();
 
-    if (gui->lockdown) {
+    gui_redraw_desktop(gui);
-        ESP_LOGI("gui", "gui_redraw with lockdown");
+    if (!gui_redraw_fs(gui)) {
-        gui_redraw_desktop(gui);
+        if (!gui_redraw_window(gui)) {
-        bool need_attention =
+            gui_redraw_desktop(gui);
-            (gui_view_port_find_enabled(gui->layers[GuiLayerWindow]) != 0 ||
-             gui_view_port_find_enabled(gui->layers[GuiLayerFullscreen]) != 0);
-        gui_redraw_status_bar(gui, need_attention);
-    } else {
-        gui_redraw_desktop(gui);
-        ESP_LOGI("gui", "gui_redraw");
-        if (!gui_redraw_fs(gui)) {
-            if (!gui_redraw_window(gui)) {
-                gui_redraw_desktop(gui);
-            }
-            gui_redraw_status_bar(gui, false);
         }
+        gui_redraw_status_bar(gui, false);
     }
 
     gui_unlock(gui);

components/nanobake/src/apps/services/gui/gui_i.h

@@ -34,7 +34,8 @@
 
 #define GUI_THREAD_FLAG_DRAW (1 << 0)
 #define GUI_THREAD_FLAG_INPUT (1 << 1)
-#define GUI_THREAD_FLAG_ALL (GUI_THREAD_FLAG_DRAW | GUI_THREAD_FLAG_INPUT)
+#define GUI_THREAD_FLAG_EXIT (1 << 2)
+#define GUI_THREAD_FLAG_ALL (GUI_THREAD_FLAG_DRAW | GUI_THREAD_FLAG_INPUT | GUI_THREAD_FLAG_EXIT)
 
 ARRAY_DEF(ViewPortArray, ViewPort*, M_PTR_OPLIST);
 
@@ -46,11 +47,10 @@ typedef struct {
 /** Gui structure */
 struct Gui {
     // Thread and lock
-    FuriThreadId thread_id;
+    FuriThread* thread;
     FuriMutex* mutex;
 
     // Layers and Canvas
-    bool lockdown;
     ViewPortArray_t layers[GuiLayerMAX];
     lv_obj_t* lvgl_parent;
 

components/nanobake/src/apps/services/gui/view_port.c

@@ -89,11 +89,10 @@ void view_port_draw(ViewPort* view_port, lv_obj_t* parent) {
     furi_check(view_port->gui);
 
     if (view_port->draw_callback) {
-        furi_check(lvgl_port_lock(100));
+        furi_check(lvgl_port_lock(100)); // TODO: fail safely
         lv_obj_clean(parent);
-        lvgl_port_unlock();
-
         view_port->draw_callback(parent, view_port->draw_callback_context);
+        lvgl_port_unlock();
     }
 
     furi_mutex_release(view_port->mutex);

components/nanobake/src/apps/services/loader/loader.c

@@ -5,11 +5,19 @@
 #include "loader_i.h"
 #include <sys/cdefs.h>
 #include "esp_heap_caps.h"
+#include "apps/services/gui/gui.h"
 
 #define TAG "Loader"
-#define LOADER_MAGIC_THREAD_VALUE 0xDEADBEEF
 
-LoaderStatus loader_start(Loader* loader, const char* id, const char* args, FuriString* error_message) {
+static int32_t loader_main(void* p);
+static LoaderStatus loader_do_start_by_id(
+    Loader* loader,
+    const char* id,
+    const char* args,
+    FuriString* error_message
+);
+
+LoaderStatus loader_start_app(Loader* loader, const char* id, const char* args, FuriString* error_message) {
     LoaderMessage message;
     LoaderMessageLoaderStatusResult result;
 
@@ -24,32 +32,23 @@ LoaderStatus loader_start(Loader* loader, const char* id, const char* args, Furi
     return result.value;
 }
 
-bool loader_lock(Loader* loader) {
+void loader_start_app_nonblocking(Loader* loader, const char* id, const char* args) {
     LoaderMessage message;
-    LoaderMessageBoolResult result;
+    LoaderMessageLoaderStatusResult result;
-    message.type = LoaderMessageTypeLock;
-    message.api_lock = api_lock_alloc_locked();
-    message.bool_value = &result;
-    furi_message_queue_put(loader->queue, &message, FuriWaitForever);
-    api_lock_wait_unlock_and_free(message.api_lock);
-    return result.value;
-}
 
-void loader_unlock(Loader* loader) {
+    message.type = LoaderMessageTypeStartByName;
-    LoaderMessage message;
+    message.start.id = id;
-    message.type = LoaderMessageTypeUnlock;
+    message.start.args = args;
+    message.start.error_message = NULL;
+    message.api_lock = NULL;
+    message.status_value = &result;
     furi_message_queue_put(loader->queue, &message, FuriWaitForever);
 }
 
-bool loader_is_locked(Loader* loader) {
+void loader_stop_app(Loader* loader) {
     LoaderMessage message;
-    LoaderMessageBoolResult result;
+    message.type = LoaderMessageTypeAppStop;
-    message.type = LoaderMessageTypeIsLocked;
-    message.api_lock = api_lock_alloc_locked();
-    message.bool_value = &result;
     furi_message_queue_put(loader->queue, &message, FuriWaitForever);
-    api_lock_wait_unlock_and_free(message.api_lock);
-    return result.value;
 }
 
 FuriPubSub* loader_get_pubsub(Loader* loader) {
@@ -60,43 +59,28 @@ FuriPubSub* loader_get_pubsub(Loader* loader) {
     return loader->pubsub;
 }
 
-// callbacks
-
-static void loader_thread_state_callback(FuriThreadState thread_state, void* context) {
-    furi_assert(context);
-
-    Loader* loader = context;
-
-    if (thread_state == FuriThreadStateRunning) {
-        LoaderEvent event;
-        event.type = LoaderEventTypeApplicationStarted;
-        furi_pubsub_publish(loader->pubsub, &event);
-    } else if (thread_state == FuriThreadStateStopped) {
-        LoaderMessage message;
-        message.type = LoaderMessageTypeAppClosed;
-        furi_message_queue_put(loader->queue, &message, FuriWaitForever);
-    }
-}
-
 // implementation
 
 static Loader* loader_alloc() {
     Loader* loader = malloc(sizeof(Loader));
     loader->pubsub = furi_pubsub_alloc();
     loader->queue = furi_message_queue_alloc(1, sizeof(LoaderMessage));
+    loader->thread = furi_thread_alloc_ex(
+        "loader",
+        2048,
+        &loader_main,
+        NULL
+    );
     loader->app_data.args = NULL;
-    loader->app_data.thread = NULL;
     loader->app_data.app = NULL;
     return loader;
 }
 
-static void loader_start_app_thread(Loader* loader) {
+static void loader_free(Loader* loader) {
-    // setup thread state callbacks
+    furi_pubsub_free(loader->pubsub);
-    furi_thread_set_state_context(loader->app_data.thread, loader);
+    furi_message_queue_free(loader->queue);
-    furi_thread_set_state_callback(loader->app_data.thread, loader_thread_state_callback);
+    furi_thread_free(loader->thread);
-
+    free(loader);
-    // start app thread
-    furi_thread_start(loader->app_data.thread);
 }
 
 static void loader_log_status_error(
@@ -115,7 +99,7 @@ static void loader_log_status_error(
 
 static LoaderStatus loader_make_status_error(
     LoaderStatus status,
-    FuriString* error_message,
+    FuriString* _Nullable error_message,
     const char* format,
     ...
 ) {
@@ -134,46 +118,41 @@ static LoaderStatus loader_make_success_status(FuriString* error_message) {
     return LoaderStatusOk;
 }
 
-static void loader_start_app(
+static void loader_start_app_with_manifest(
     Loader* loader,
     const AppManifest* _Nonnull manifest,
     const char* args
 ) {
-    FURI_LOG_I(TAG, "Starting %s", manifest->id);
-
     App* _Nonnull app = furi_app_alloc(manifest);
     loader->app_data.app = app;
+    loader->app_data.args = (void*)args;
 
-    FuriThread* thread = furi_app_alloc_thread(loader->app_data.app, args);
+    if (manifest->on_start != NULL) {
-    loader->app_data.app->thread = thread;
+        manifest->on_start((void*)args);
-    loader->app_data.thread = thread;
+    }
 
-    loader_start_app_thread(loader);
+    if (manifest->on_show != NULL) {
+        ViewPort* view_port = view_port_alloc();
+        loader->app_data.view_port = view_port;
+        view_port_draw_callback_set(view_port, manifest->on_show, NULL);
+
+        FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
+            gui_add_view_port(gui, view_port, GuiLayerFullscreen); // TODO: layer type
+        })
+    } else {
+        loader->app_data.view_port = NULL;
+    }
 }
 
 // process messages
 
-static bool loader_do_is_locked(Loader* loader) {
-    return loader->app_data.thread != NULL;
-}
-
 static LoaderStatus loader_do_start_by_id(
     Loader* loader,
     const char* id,
     const char* args,
-    FuriString* error_message
+    FuriString* _Nullable error_message
 ) {
-    // check lock
+    FURI_LOG_I(TAG, "loader start by id %s", id);
-    if (loader_do_is_locked(loader)) {
-        const char* current_thread_name =
-            furi_thread_get_name(furi_thread_get_id(loader->app_data.thread));
-        return loader_make_status_error(
-            LoaderStatusErrorAppStarted,
-            error_message,
-            "Loader is locked, please close the \"%s\" first",
-            current_thread_name
-        );
-    }
 
     const AppManifest* manifest = app_manifest_registry_find_by_id(id);
     if (manifest == NULL) {
@@ -185,54 +164,44 @@ static LoaderStatus loader_do_start_by_id(
         );
     }
 
-    loader_start_app(loader, manifest, args);
+    loader_start_app_with_manifest(loader, manifest, args);
     return loader_make_success_status(error_message);
 }
 
-static bool loader_do_lock(Loader* loader) {
+static void loader_do_stop_app(Loader* loader) {
-    if (loader->app_data.thread) {
+    App* app = loader->app_data.app;
-        return false;
+    if (app == NULL) {
+        FURI_LOG_W(TAG, "Stop app: no app running");
+        return;
     }
 
-    loader->app_data.thread = (FuriThread*)LOADER_MAGIC_THREAD_VALUE;
+    FURI_LOG_I(TAG, "Stopping %s", app->manifest->id);
-    return true;
-}
 
-static void loader_do_unlock(Loader* loader) {
+    ViewPort* view_port = loader->app_data.view_port;
-    furi_check(loader->app_data.thread == (FuriThread*)LOADER_MAGIC_THREAD_VALUE);
+    if (view_port) {
-    loader->app_data.thread = NULL;
+        FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
-}
+            gui_remove_view_port(gui, view_port);
+        })
+        view_port_free(view_port);
+        loader->app_data.view_port = NULL;
+    }
 
-static void loader_do_app_closed(Loader* loader) {
+    if (app->manifest->on_stop) {
-    furi_assert(loader->app_data.thread);
+        app->manifest->on_stop();
-
+    }
-    furi_thread_join(loader->app_data.thread);
-    FURI_LOG_I(
-        TAG,
-        "App %s returned: %li",
-        loader->app_data.app->manifest->id,
-        furi_thread_get_return_code(loader->app_data.thread)
-    );
 
     if (loader->app_data.args) {
         free(loader->app_data.args);
         loader->app_data.args = NULL;
     }
 
-    if (loader->app_data.app) {
+    furi_app_free(loader->app_data.app);
-        furi_app_free(loader->app_data.app);
+    loader->app_data.app = NULL;
-        loader->app_data.app = NULL;
-    } else {
-        assert(loader->app_data.thread == NULL);
-        furi_thread_free(loader->app_data.thread);
-    }
-
-    loader->app_data.thread = NULL;
 
     FURI_LOG_I(
         TAG,
         "Application stopped. Free heap: %zu",
-        heap_caps_get_free_size(MALLOC_CAP_DEFAULT)
+        heap_caps_get_free_size(MALLOC_CAP_INTERNAL)
     );
 
     LoaderEvent event;
@@ -242,42 +211,76 @@ static void loader_do_app_closed(Loader* loader) {
 
 // app
 
-_Noreturn int32_t loader_main(void* p) {
+static int32_t loader_main(void* p) {
     UNUSED(p);
 
-    Loader* loader = loader_alloc();
+    FuriMessageQueue* queue = NULL;
-    furi_record_create(RECORD_LOADER, loader);
+    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+        queue = loader->queue;
+    })
+    furi_check(queue != NULL);
 
     LoaderMessage message;
-    while (true) {
+    bool exit_requested = false;
-        if (furi_message_queue_get(loader->queue, &message, FuriWaitForever) == FuriStatusOk) {
+    while (!exit_requested) {
+        if (furi_message_queue_get(queue, &message, FuriWaitForever) == FuriStatusOk) {
+            FURI_LOG_I(TAG, "processing message of type %d", message.type);
             switch (message.type) {
                 case LoaderMessageTypeStartByName:
-                    message.status_value->value = loader_do_start_by_id(
+                    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
-                        loader,
+                        if (loader->app_data.app) {
-                        message.start.id,
+                            loader_do_stop_app(loader);
-                        message.start.args,
+                        }
-                        message.start.error_message
+                        message.status_value->value = loader_do_start_by_id(
-                    );
+                            loader,
-                    api_lock_unlock(message.api_lock);
+                            message.start.id,
+                            message.start.args,
+                            message.start.error_message
+                        );
+                        if (message.api_lock) {
+                            api_lock_unlock(message.api_lock);
+                        }
+                    })
                     break;
-                case LoaderMessageTypeIsLocked:
+                case LoaderMessageTypeAppStop:
-                    message.bool_value->value = loader_do_is_locked(loader);
+                    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
-                    api_lock_unlock(message.api_lock);
+                        loader_do_stop_app(loader);
+                    })
                     break;
-                case LoaderMessageTypeAppClosed:
+                case LoaderMessageTypeExit:
-                    loader_do_app_closed(loader);
+                    exit_requested = true;
-                    break;
-                case LoaderMessageTypeLock:
-                    message.bool_value->value = loader_do_lock(loader);
-                    api_lock_unlock(message.api_lock);
-                    break;
-                case LoaderMessageTypeUnlock:
-                    loader_do_unlock(loader);
                     break;
             }
         }
     }
+
+    return 0;
+}
+
+static void loader_start(void* p) {
+    Loader* loader = loader_alloc();
+    furi_record_create(RECORD_LOADER, loader);
+    furi_thread_set_priority(loader->thread, FuriThreadPriorityHigh);
+    furi_thread_start(loader->thread);
+}
+
+static void loader_stop() {
+    LoaderMessage message = {
+        .api_lock = NULL,
+        .type = LoaderMessageTypeExit
+    };
+
+    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+        furi_message_queue_put(loader->queue, &message, FuriWaitForever);
+
+        furi_thread_join(loader->thread);
+        furi_thread_free(loader->thread);
+        loader->thread = NULL;
+
+        loader_free(loader);
+    })
+
+    furi_record_destroy(RECORD_LOADER);
 }
 
 const AppManifest loader_app = {
@@ -285,6 +288,8 @@ const AppManifest loader_app = {
     .name = "Loader",
     .icon = NULL,
     .type = AppTypeService,
-    .entry_point = &loader_main,
+    .on_start = &loader_start,
+    .on_stop = &loader_stop,
+    .on_show = NULL,
     .stack_size = AppStackSizeNormal
 };

components/nanobake/src/apps/services/loader/loader.h

@@ -28,14 +28,24 @@ typedef struct {
 } LoaderEvent;
 
 /**
- * @brief Start application
+ * @brief Close any running app, then start new one. Blocking.
- * @param[in] instance loader instance
+ * @param[in] loader loader instance
  * @param[in] id application name or id
  * @param[in] args application arguments
  * @param[out] error_message detailed error message, can be NULL
  * @return LoaderStatus
  */
-LoaderStatus loader_start(Loader* instance, const char* id, const char* args, FuriString* error_message);
+LoaderStatus loader_start_app(Loader* loader, const char* id, const char* args, FuriString* error_message);
+
+/**
+ * @brief Close any running app, then start new one. Non-blocking.
+ * @param[in] loader loader instance
+ * @param[in] id application name or id
+ * @param[in] args application arguments
+ */
+void loader_start_app_nonblocking(Loader* loader, const char* id, const char* args);
+
+void loader_stop_app(Loader* loader);
 
 /**
  * @brief Start application with GUI error message
@@ -46,26 +56,6 @@ LoaderStatus loader_start(Loader* instance, const char* id, const char* args, Fu
  */
 //LoaderStatus loader_start_with_gui_error(Loader* loader, const char* name, const char* args);
 
-/**
- * @brief Lock application start
- * @param[in] instance loader instance
- * @return true on success
- */
-bool loader_lock(Loader* instance);
-
-/**
- * @brief Unlock application start
- * @param[in] instance loader instance
- */
-void loader_unlock(Loader* instance);
-
-/**
- * @brief Check if loader is locked
- * @param[in] instance loader instance
- * @return true if locked
- */
-bool loader_is_locked(Loader* instance);
-
 /**
  * @brief Show loader menu
  * @param[in] instance loader instance

components/nanobake/src/apps/services/loader/loader_i.h

@@ -5,14 +5,16 @@
 #include "message_queue.h"
 #include "pubsub.h"
 #include "thread.h"
+#include "apps/services/gui/view_port.h"
 
 typedef struct {
     char* args;
-    FuriThread* thread;
     App* app;
+    ViewPort* view_port;
 } LoaderAppData;
 
 struct Loader {
+    FuriThread* thread;
     FuriPubSub* pubsub;
     FuriMessageQueue* queue;
     LoaderAppData app_data;
@@ -20,10 +22,8 @@ struct Loader {
 
 typedef enum {
     LoaderMessageTypeStartByName,
-    LoaderMessageTypeAppClosed,
+    LoaderMessageTypeAppStop,
-    LoaderMessageTypeLock,
+    LoaderMessageTypeExit,
-    LoaderMessageTypeUnlock,
-    LoaderMessageTypeIsLocked,
 } LoaderMessageType;
 
 typedef struct {
@@ -41,6 +41,8 @@ typedef struct {
 } LoaderMessageBoolResult;
 
 typedef struct {
+    // This lock blocks anyone from starting an app as long
+    // as an app is already running via loader_start()
     FuriApiLock api_lock;
     LoaderMessageType type;
 

components/nanobake/src/apps/system/system_info/system_info.c

@@ -1,17 +1,50 @@
 #include "system_info.h"
 #include "furi_extra_defines.h"
 #include "thread.h"
+#include "lvgl.h"
 
-static int32_t system_info_entry_point(void* param) {
+static void system_info_main(void* param) {
     UNUSED(param);
 
     printf(
         "Heap memory available: %d / %d\n",
-        heap_caps_get_free_size(MALLOC_CAP_DEFAULT),
+        heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
-        heap_caps_get_total_size(MALLOC_CAP_DEFAULT)
+        heap_caps_get_total_size(MALLOC_CAP_INTERNAL)
     );
 
-    return 0;
+    printf(
+        "SPI memory available: %d / %d\n",
+        heap_caps_get_free_size(MALLOC_CAP_SPIRAM),
+        heap_caps_get_total_size(MALLOC_CAP_SPIRAM)
+    );
+}
+
+static void app_show(lv_obj_t* parent, void* context) {
+    UNUSED(context);
+
+    lv_obj_t* heap_info = lv_label_create(parent);
+    lv_label_set_recolor(heap_info, true);
+    lv_obj_set_width(heap_info, 200);
+    lv_obj_set_style_text_align(heap_info, LV_TEXT_ALIGN_CENTER, 0);
+    lv_label_set_text_fmt(
+        heap_info,
+        "Heap available:\n%d / %d",
+        heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
+        heap_caps_get_total_size(MALLOC_CAP_INTERNAL)
+    );
+    lv_obj_align(heap_info, LV_ALIGN_CENTER, 0, -20);
+
+    lv_obj_t* spi_info = lv_label_create(parent);
+    lv_label_set_recolor(spi_info, true);
+    lv_obj_set_width(spi_info, 200);
+    lv_obj_set_style_text_align(spi_info, LV_TEXT_ALIGN_CENTER, 0);
+    lv_label_set_text_fmt(
+        spi_info,
+        "SPI available\n%d / %d",
+        heap_caps_get_free_size(MALLOC_CAP_SPIRAM),
+        heap_caps_get_total_size(MALLOC_CAP_SPIRAM)
+    );
+    lv_obj_align(spi_info, LV_ALIGN_CENTER, 0, 20);
 }
 
 AppManifest system_info_app = {
@@ -19,6 +52,8 @@ AppManifest system_info_app = {
     .name = "System Info",
     .icon = NULL,
     .type = AppTypeSystem,
-    .entry_point = &system_info_entry_point,
+    .on_start = NULL,
+    .on_stop = NULL,
+    .on_show = app_show,
     .stack_size = AppStackSizeNormal
 };

components/nanobake/src/nanobake.c

@@ -4,6 +4,7 @@
 #include "devices_i.h"
 #include "furi.h"
 #include "graphics_i.h"
+#include "partitions.h"
 
 #define TAG "nanobake"
 
@@ -18,15 +19,7 @@ extern const AppManifest system_info_app;
 void start_service(const AppManifest* _Nonnull manifest) {
     // TODO: keep track of running services
     FURI_LOG_I(TAG, "Starting service %s", manifest->name);
-    FuriThread* thread = furi_thread_alloc_ex(
+    manifest->on_start(NULL);
-        manifest->name,
-        manifest->stack_size,
-        manifest->entry_point,
-        NULL
-    );
-    furi_thread_mark_as_service(thread);
-    furi_thread_set_appid(thread, manifest->id);
-    furi_thread_start(thread);
 }
 
 static void register_apps(Config* _Nonnull config) {
@@ -51,6 +44,8 @@ static void start_services() {
 __attribute__((unused)) extern void nanobake_start(Config* _Nonnull config) {
     furi_init();
 
+    nb_partitions_init();
+
     Devices hardware = nb_devices_create(config);
     /*NbLvgl lvgl =*/nb_graphics_init(&hardware);
 

components/nanobake/src/partitions.c

@@ -0,0 +1,66 @@
+#include "partitions.h"
+#include "esp_spiffs.h"
+#include "log.h"
+#include "nvs_flash.h"
+
+static const char* TAG = "filesystem";
+
+static esp_err_t nvs_flash_init_safely() {
+    esp_err_t result = nvs_flash_init();
+    if (result == ESP_ERR_NVS_NO_FREE_PAGES || result == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        result = nvs_flash_init();
+    }
+    return result;
+}
+
+static esp_err_t spiffs_init(esp_vfs_spiffs_conf_t* conf) {
+    esp_err_t ret = esp_vfs_spiffs_register(conf);
+    if (ret != ESP_OK) {
+        if (ret == ESP_FAIL) {
+            FURI_LOG_E(TAG, "Failed to mount or format filesystem %s", conf->base_path);
+        } else if (ret == ESP_ERR_NOT_FOUND) {
+            FURI_LOG_E(TAG, "Failed to find SPIFFS partition %s", conf->base_path);
+        } else {
+            FURI_LOG_E(TAG, "Failed to initialize SPIFFS %s (%s)", conf->base_path, esp_err_to_name(ret));
+        }
+        return ESP_FAIL;
+    }
+
+    size_t total = -1, used = 0;
+    ret = esp_spiffs_info(NULL, &total, &used);
+    if (ret != ESP_OK) {
+        FURI_LOG_E(TAG, "Failed to get SPIFFS partition information for %s (%s)", conf->base_path, esp_err_to_name(ret));
+    } else {
+        FURI_LOG_I(TAG, "Partition size for %s: total: %d, used: %d", conf->base_path, total, used);
+    }
+    return ESP_OK;
+}
+
+esp_err_t nb_partitions_init() {
+    ESP_ERROR_CHECK(nvs_flash_init_safely());
+
+    esp_vfs_spiffs_conf_t assets_spiffs = {
+        .base_path = MOUNT_POINT_ASSETS,
+        .partition_label = NULL,
+        .max_files = 4,
+        .format_if_mount_failed = false
+    };
+
+    if (spiffs_init(&assets_spiffs) != ESP_OK) {
+        return ESP_FAIL;
+    }
+
+    esp_vfs_spiffs_conf_t config_spiffs = {
+        .base_path = MOUNT_POINT_CONFIG,
+        .partition_label = "config",
+        .max_files = 2,
+        .format_if_mount_failed = false
+    };
+
+    if (spiffs_init(&config_spiffs) != ESP_OK) {
+        return ESP_FAIL;
+    }
+
+    return ESP_OK;
+}

components/nanobake/src/partitions.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "esp_err.h"
+
+#define MOUNT_POINT_ASSETS "/assets"
+#define MOUNT_POINT_CONFIG "/config"
+
+esp_err_t nb_partitions_init();

main/CMakeLists.txt

@@ -1,4 +1,3 @@
-
 idf_component_register(
     SRC_DIRS "src"
         "src/hello_world"

main/src/hello_world/hello_world.c

@@ -1,21 +1,16 @@
 #include "hello_world.h"
 #include "furi.h"
 #include "apps/services/gui/gui.h"
-#include "esp_lvgl_port.h"
+#include "apps/services/loader/loader.h"
-
-static const char* TAG = "app_hello_world";
-
-ViewPort* view_port = NULL;
-FuriSemaphore* quit_lock = NULL;
 
 static void on_button_click(lv_event_t _Nonnull* event) {
-    ESP_LOGI(TAG, "button clicked");
+    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
-    furi_semaphore_give(quit_lock);
+        loader_start_app_nonblocking(loader, "systeminfo", NULL);
+    })
 }
 
-// Main entry point for LVGL widget creation
+static void app_show(lv_obj_t* parent, void* context) {
-static void app_lvgl(lv_obj_t* parent, void* context) {
+    UNUSED(context);
-    lvgl_port_lock(0);
 
     lv_obj_t* label = lv_label_create(parent);
     lv_label_set_recolor(label, true);
@@ -26,41 +21,9 @@ static void app_lvgl(lv_obj_t* parent, void* context) {
 
     lv_obj_t* btn = lv_btn_create(parent);
     label = lv_label_create(btn);
-    lv_label_set_text_static(label, "Exit");
+    lv_label_set_text_static(label, "System Info");
     lv_obj_align(btn, LV_ALIGN_CENTER, 0, 30);
     lv_obj_add_event_cb(btn, on_button_click, LV_EVENT_CLICKED, NULL);
-
-    lvgl_port_unlock();
-}
-
-// Main entry point for the app
-static int32_t app_main(void* param) {
-    UNUSED(param);
-
-    // Configure view port to enable UI with LVGL
-    view_port = view_port_alloc();
-    view_port_draw_callback_set(view_port, &app_lvgl, view_port);
-
-    // The transaction automatically calls furi_record_open() and furi_record_close()
-    FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
-        gui_add_view_port(gui, view_port, GuiLayerFullscreen);
-    })
-
-    // Wait for the button click to release the mutex (lock)
-    quit_lock = furi_semaphore_alloc(1, 0);
-    while (!furi_semaphore_take(quit_lock, UINT32_MAX)) {
-        // Do nothing
-    }
-    furi_semaphore_free(quit_lock);
-    quit_lock = NULL;
-
-    FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
-        gui_remove_view_port(gui, view_port);
-        view_port_free(view_port);
-        view_port = NULL;
-    });
-
-    return 0;
 }
 
 const AppManifest hello_world_app = {
@@ -68,6 +31,8 @@ const AppManifest hello_world_app = {
     .name = "Hello World",
     .icon = NULL,
     .type = AppTypeUser,
-    .entry_point = &app_main,
+    .on_start = NULL,
+    .on_stop = NULL,
+    .on_show = &app_show,
     .stack_size = AppStackSizeNormal,
 };

main/src/main.c

@@ -22,8 +22,9 @@ __attribute__((unused)) void app_main(void) {
 
     FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
         FuriString* error_message = furi_string_alloc();
-        if (loader_start(loader, hello_world_app.id, NULL, error_message) != LoaderStatusOk) {
+        if (loader_start_app(loader, hello_world_app.id, NULL, error_message) != LoaderStatusOk) {
             FURI_LOG_E(hello_world_app.id, "%s\r\n", furi_string_get_cstr(error_message));
         }
+        furi_string_free(error_message);
     });
 }

partitions.csv

@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,   Size,   Flags
+# Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
+nvs,      data, nvs,     0x9000,   0x6000,
+phy_init, data, phy,     0xf000,   0x1000,
+factory,  app,  factory, 0x10000,  1M,
+assets,   data, spiffs,  ,         128k,
+config,   data, spiffs,  ,         64k,

sdkconfig.defaults

@@ -2,3 +2,6 @@ CONFIG_IDF_TARGET="esp32"
 CONFIG_LV_COLOR_16_SWAP=y
 CONFIG_LV_USE_USER_DATA=y
 CONFIG_FREERTOS_TASK_NOTIFICATION_ARRAY_ENTRIES=2
+CONFIG_PARTITION_TABLE_CUSTOM=y
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
+CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"