first version

application.fam

@@ -0,0 +1,14 @@
+App(
+    appid="flashlight",
+    name="Flashlight",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="flashlight_app",
+    cdefines=["APP_FLASHLIGHT"],
+    requires=[
+        "gui",
+    ],
+    stack_size=2 * 1024,
+    order=20,
+    fap_icon="flash10px.png",
+    fap_category="GPIO",
+)

flashlight.c

@@ -0,0 +1,128 @@
+// by @xMasterX
+
+#include <furi.h>
+#include <furi_hal_power.h>
+#include <gui/gui.h>
+#include <input/input.h>
+#include <stdlib.h>
+#include <gui/elements.h>
+
+typedef enum {
+    EventTypeTick,
+    EventTypeKey,
+} EventType;
+
+typedef struct {
+    EventType type;
+    InputEvent input;
+} PluginEvent;
+
+typedef struct {
+    bool is_on;
+} PluginState;
+
+static void render_callback(Canvas* const canvas, void* ctx) {
+    const PluginState* plugin_state = acquire_mutex((ValueMutex*)ctx, 25);
+    if(plugin_state == NULL) {
+        return;
+    }
+
+    canvas_set_font(canvas, FontPrimary);
+    elements_multiline_text_aligned(canvas, 64, 2, AlignCenter, AlignTop, "Flashlight");
+
+    canvas_set_font(canvas, FontSecondary);
+
+    if(!plugin_state->is_on) {
+        elements_multiline_text_aligned(
+            canvas, 64, 28, AlignCenter, AlignTop, "Press OK button turn on");
+    } else {
+        elements_multiline_text_aligned(canvas, 64, 28, AlignCenter, AlignTop, "Light is on!");
+        elements_multiline_text_aligned(
+            canvas, 64, 40, AlignCenter, AlignTop, "Press OK button to off");
+    }
+
+    release_mutex((ValueMutex*)ctx, plugin_state);
+}
+
+static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queue) {
+    furi_assert(event_queue);
+
+    PluginEvent event = {.type = EventTypeKey, .input = *input_event};
+    furi_message_queue_put(event_queue, &event, FuriWaitForever);
+}
+
+static void flash_toggle(PluginState* const plugin_state) {
+    furi_hal_gpio_write(&gpio_ext_pc3, false);
+    furi_hal_gpio_init(&gpio_ext_pc3, GpioModeOutputPushPull, GpioPullNo, GpioSpeedVeryHigh);
+
+    if(plugin_state->is_on) {
+        furi_hal_gpio_write(&gpio_ext_pc3, false);
+        plugin_state->is_on = false;
+    } else {
+        furi_hal_gpio_write(&gpio_ext_pc3, true);
+        plugin_state->is_on = true;
+    }
+}
+
+int32_t flashlight_app() {
+    FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(PluginEvent));
+
+    PluginState* plugin_state = malloc(sizeof(PluginState));
+
+    ValueMutex state_mutex;
+    if(!init_mutex(&state_mutex, plugin_state, sizeof(PluginState))) {
+        FURI_LOG_E("flashlight", "cannot create mutex\r\n");
+        furi_message_queue_free(event_queue);
+        free(plugin_state);
+        return 255;
+    }
+
+    // Set system callbacks
+    ViewPort* view_port = view_port_alloc();
+    view_port_draw_callback_set(view_port, render_callback, &state_mutex);
+    view_port_input_callback_set(view_port, input_callback, event_queue);
+
+    // Open GUI and register view_port
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+
+    PluginEvent event;
+    for(bool processing = true; processing;) {
+        FuriStatus event_status = furi_message_queue_get(event_queue, &event, 100);
+
+        PluginState* plugin_state = (PluginState*)acquire_mutex_block(&state_mutex);
+
+        if(event_status == FuriStatusOk) {
+            // press events
+            if(event.type == EventTypeKey) {
+                if(event.input.type == InputTypePress) {
+                    switch(event.input.key) {
+                    case InputKeyUp:
+                    case InputKeyDown:
+                    case InputKeyRight:
+                    case InputKeyLeft:
+                        break;
+                    case InputKeyOk:
+                        flash_toggle(plugin_state);
+                        break;
+                    case InputKeyBack:
+                        processing = false;
+                        break;
+                    }
+                }
+            }
+        }
+
+        view_port_update(view_port);
+        release_mutex(&state_mutex, plugin_state);
+    }
+
+    view_port_enabled_set(view_port, false);
+    gui_remove_view_port(gui, view_port);
+    furi_record_close(RECORD_GUI);
+    view_port_free(view_port);
+    furi_message_queue_free(event_queue);
+    delete_mutex(&state_mutex);
+
+    return 0;
+}