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@CompaqDisc
Created May 2, 2022 20:50
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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;
}
@CompaqDisc
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Toss this under applications/clock and edit applications.{c,mk} accordingly.

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