panki/fz-metronome
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working beeps

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This commit is contained in:
Felix Pankratz 2022-09-18 15:25:51 +02:00
parent 1bfa25ed20
commit 5aaca73b8e
1 changed files with 23 additions and 3 deletions
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26
metronome.c
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@ -1,10 +1,11 @@
#include <furi.h>
#include <furi_hal.h>
#include <gui/gui.h>
#include <input/input.h>
#include <m-string.h>
#include <stdlib.h>
const double BPM_STEP_SIZE = 0.5;
#define BPM_STEP_SIZE 0.5d
typedef enum {
EventTypeTick,
@ -19,6 +20,7 @@ typedef struct {
typedef struct {
double bpm;
bool playing;
FuriTimer* timer;
} MetronomeState;
static void render_callback(Canvas* const canvas, void* ctx) {
@ -59,9 +61,17 @@ static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queu
furi_message_queue_put(event_queue, &event, FuriWaitForever);
}
static void timer_callback() {
//UNUSED(metronome_state);
furi_hal_speaker_start(440.0f, 1.0f);
furi_delay_ms(40);
furi_hal_speaker_stop();
}
static void metronome_state_init(MetronomeState* const metronome_state) {
metronome_state->bpm = 120.0;
metronome_state->playing = false;
metronome_state->timer = furi_timer_alloc(timer_callback, FuriTimerTypePeriodic, metronome_state);
}
int32_t metronome_app() {
@ -102,13 +112,22 @@ int32_t metronome_app() {
case InputKeyDown:
break;
case InputKeyRight:
metronome_state->bpm += BPM_STEP_SIZE;
metronome_state->bpm += (double)BPM_STEP_SIZE;
break;
case InputKeyLeft:
metronome_state->bpm -= BPM_STEP_SIZE;
metronome_state->bpm -= (double)BPM_STEP_SIZE;
break;
case InputKeyOk:
metronome_state->playing = !metronome_state->playing;
if (metronome_state->playing) {
// calculate time between beeps
uint32_t tps = furi_kernel_get_tick_frequency();
double bps = (double)metronome_state->bpm / 60;
uint32_t ticks_to_sleep = (uint32_t)round(tps / bps);
furi_timer_start(metronome_state->timer, ticks_to_sleep);
} else {
furi_timer_stop(metronome_state->timer);
}
break;
case InputKeyBack:
processing = false;
@ -131,6 +150,7 @@ int32_t metronome_app() {
view_port_free(view_port);
furi_message_queue_free(event_queue);
delete_mutex(&state_mutex);
furi_timer_free(metronome_state->timer);
free(metronome_state);
return 0;