A simple clock for Flipper Zero

#include <furi.h> #include <furi_hal.h>

#include <gui/elements.h>

#include <gui/gui.h> #include <input/input.h>

#define TAG "Clock" #define CLOCK_DATE_FORMAT "%.4d-%.2d-%.2d" #define CLOCK_TIME_FORMAT "%.2d:%.2d:%.2d"

typedef enum { EventTypeTick, EventTypeKey, } EventType;

typedef struct { EventType type; InputEvent input; } PluginEvent;

typedef struct { FuriHalRtcDateTime datetime; } ClockState;

static void clock_input_callback(InputEvent* input_event, osMessageQueueId_t event_queue) { furi_assert(event_queue);

PluginEvent event = {.type = EventTypeKey, .input = *input_event};
osMessageQueuePut(event_queue, &event, 0, osWaitForever);

}

static void clock_render_callback(Canvas* const canvas, void* ctx) { canvas_clear(canvas); canvas_set_color(canvas, ColorBlack);

ClockState* state = (ClockState*)acquire_mutex((ValueMutex*)ctx, 25);

char strings[2][20];

sprintf(strings[0], CLOCK_DATE_FORMAT, state->datetime.year, state->datetime.month, state->datetime.day);
sprintf(strings[1], CLOCK_TIME_FORMAT, state->datetime.hour, state->datetime.minute, state->datetime.second);

release_mutex((ValueMutex*)ctx, state);
canvas_set_font(canvas, FontBigNumbers);
canvas_draw_str_aligned(canvas, 64, 32-16, AlignCenter, AlignCenter, strings[1]);
canvas_set_font(canvas, FontSecondary);
canvas_draw_str_aligned(canvas, 64, 42-8, AlignCenter, AlignTop, strings[0]);

elements_button_left(canvas, "Alarms");
elements_button_right(canvas, "Settings");

}

static void clock_state_init(ClockState* const state) { furi_hal_rtc_get_datetime(&state->datetime); }

// Runs every 1000ms by default static void clock_tick(void* ctx) { furi_assert(ctx); osMessageQueueId_t event_queue = ctx; PluginEvent event = {.type = EventTypeTick}; // It's OK to loose this event if system overloaded osMessageQueuePut(event_queue, &event, 0, 0); }

int32_t clock_app_old(void* p) { osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(PluginEvent), NULL);

ClockState* plugin_state = malloc(sizeof(ClockState));
clock_state_init(plugin_state);
ValueMutex state_mutex;
if (!init_mutex(&state_mutex, plugin_state, sizeof(ClockState))) {
    FURI_LOG_E(TAG, "cannot create mutex\r\n");
    free(plugin_state);
    return 255;
}

// Set system callbacks
ViewPort* view_port = view_port_alloc();
view_port_draw_callback_set(view_port, clock_render_callback, &state_mutex);
view_port_input_callback_set(view_port, clock_input_callback, event_queue);
osTimerId_t timer = osTimerNew(clock_tick, osTimerPeriodic, event_queue, NULL);
osTimerStart(timer, osKernelGetTickFreq());

// Open GUI and register view_port
Gui* gui = furi_record_open("gui");
gui_add_view_port(gui, view_port, GuiLayerFullscreen);

// Main loop
PluginEvent event;
for (bool processing = true; processing;) {
    osStatus_t event_status = osMessageQueueGet(event_queue, &event, NULL, 100);
    ClockState* plugin_state = (ClockState*)acquire_mutex_block(&state_mutex);

    if (event_status == osOK) {
        // press events
        if (event.type == EventTypeKey) {
            if (event.input.type == InputTypeShort || event.input.type == InputTypeRepeat) {
                switch(event.input.key) {
                case InputKeyUp:
                case InputKeyDown:
                case InputKeyRight:
                case InputKeyLeft:
                case InputKeyOk:
                    break;
                case InputKeyBack:
                    // Exit the plugin
                    processing = false;
                    break;
                }
            }
        } else if(event.type == EventTypeTick) {
            furi_hal_rtc_get_datetime(&plugin_state->datetime);
        }
    } else {
        FURI_LOG_D(TAG, "osMessageQueue: event timeout");
        // event timeout
    }

    view_port_update(view_port);
    release_mutex(&state_mutex, plugin_state);
}

osTimerDelete(timer);
view_port_enabled_set(view_port, false);
gui_remove_view_port(gui, view_port);
furi_record_close("gui");
view_port_free(view_port);
osMessageQueueDelete(event_queue);

return 0;

}