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ocarina.c
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ocarina.c
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#include <furi.h>
#include <furi_hal.h>
#include <gui/gui.h>
#include <input/input.h>
#include <stdlib.h>
#define NOTE_UP 587.33f
#define NOTE_LEFT 493.88f
#define NOTE_RIGHT 440.00f
#define NOTE_DOWN 349.23
#define NOTE_OK 293.66f
typedef struct {
FuriMutex* model_mutex;
FuriMessageQueue* event_queue;
ViewPort* view_port;
Gui* gui;
} Ocarina;
void draw_callback(Canvas* canvas, void* ctx) {
Ocarina* ocarina = ctx;
furi_check(furi_mutex_acquire(ocarina->model_mutex, FuriWaitForever) == FuriStatusOk);
//canvas_draw_box(canvas, ocarina->model->x, ocarina->model->y, 4, 4);
canvas_draw_frame(canvas, 0, 0, 128, 64);
canvas_draw_str(canvas, 50, 10, "Ocarina");
canvas_draw_str(canvas, 30, 20, "OK button for A");
furi_mutex_release(ocarina->model_mutex);
}
void input_callback(InputEvent* input, void* ctx) {
Ocarina* ocarina = ctx;
// Puts input onto event queue with priority 0, and waits until completion.
furi_message_queue_put(ocarina->event_queue, input, FuriWaitForever);
}
Ocarina* ocarina_alloc() {
Ocarina* instance = malloc(sizeof(Ocarina));
instance->model_mutex = furi_mutex_alloc(FuriMutexTypeNormal);
instance->event_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
instance->view_port = view_port_alloc();
view_port_draw_callback_set(instance->view_port, draw_callback, instance);
view_port_input_callback_set(instance->view_port, input_callback, instance);
instance->gui = furi_record_open("gui");
gui_add_view_port(instance->gui, instance->view_port, GuiLayerFullscreen);
return instance;
}
void ocarina_free(Ocarina* instance) {
view_port_enabled_set(instance->view_port, false); // Disabsles our ViewPort
gui_remove_view_port(instance->gui, instance->view_port); // Removes our ViewPort from the Gui
furi_record_close("gui"); // Closes the gui record
view_port_free(instance->view_port); // Frees memory allocated by view_port_alloc
furi_message_queue_free(instance->event_queue);
furi_mutex_free(instance->model_mutex);
furi_hal_speaker_stop();
free(instance);
}
int32_t ocarina_app(void* p) {
UNUSED(p);
Ocarina* ocarina = ocarina_alloc();
InputEvent event;
for(bool processing = true; processing;) {
// Pops a message off the queue and stores it in `event`.
// No message priority denoted by NULL, and 100 ticks of timeout.
FuriStatus status = furi_message_queue_get(ocarina->event_queue, &event, 100);
furi_check(furi_mutex_acquire(ocarina->model_mutex, FuriWaitForever) == FuriStatusOk);
float volume = 1.0f;
if(status == FuriStatusOk) {
if(event.type == InputTypePress) {
switch(event.key) {
case InputKeyUp:
furi_hal_speaker_start(NOTE_UP, volume);
break;
case InputKeyDown:
furi_hal_speaker_start(NOTE_DOWN, volume);
break;
case InputKeyLeft:
furi_hal_speaker_start(NOTE_LEFT, volume);
break;
case InputKeyRight:
furi_hal_speaker_start(NOTE_RIGHT, volume);
break;
case InputKeyOk:
furi_hal_speaker_start(NOTE_OK, volume);
break;
case InputKeyBack:
processing = false;
break;
}
} else if (event.type == InputTypeRelease) {
furi_hal_speaker_stop();
}
}
furi_mutex_release(ocarina->model_mutex);
view_port_update(ocarina->view_port); // signals our draw callback
}
ocarina_free(ocarina);
return 0;
}