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Play an arbitrary stream on the buzzer without blocking

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This commit is contained in:
Alessandro Genova
2025-08-15 00:53:23 -04:00
parent c37d40d086
commit 3caef587df
3 changed files with 183 additions and 4 deletions
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watch-library/simulator/watch/watch_tcc.c
+65 -3
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@@ -32,11 +32,14 @@ static volatile bool buzzer_enabled = false;
static uint32_t buzzer_period;
void cb_watch_buzzer_seq(void *userData);
void cb_watch_buzzer_raw_source(void *userData);
static uint16_t _seq_position;
static int8_t _tone_ticks, _repeat_counter;
static volatile long _em_interval_id = 0;
static int8_t *_sequence;
static watch_buzzer_raw_source_t _raw_source;
static void* _userdata;
static uint8_t _volume;
static void (*_cb_finished)(void);
static watch_cb_t _cb_start_global = NULL;
@@ -57,6 +60,10 @@ void watch_buzzer_play_sequence(int8_t *note_sequence, void (*callback_on_end)(v
void watch_buzzer_play_sequence_with_volume(int8_t *note_sequence, void (*callback_on_end)(void), watch_buzzer_volume_t volume) {
watch_buzzer_abort_sequence();
// prepare buzzer
watch_enable_buzzer();
watch_set_buzzer_off();
_buzzer_is_active = true;
if (_cb_start_global) {
@@ -69,9 +76,6 @@ void watch_buzzer_play_sequence_with_volume(int8_t *note_sequence, void (*callba
_seq_position = 0;
_tone_ticks = 0;
_repeat_counter = -1;
// prepare buzzer
watch_enable_buzzer();
watch_set_buzzer_off();
// initiate 64 hz callback
_em_interval_id = emscripten_set_interval(cb_watch_buzzer_seq, (double)(1000/64), (void *)NULL);
}
@@ -117,6 +121,64 @@ void cb_watch_buzzer_seq(void *userData) {
} else _tone_ticks--;
}
void watch_buzzer_play_raw_source(watch_buzzer_raw_source_t raw_source, void* userdata, watch_cb_t callback_on_end) {
watch_buzzer_play_raw_source_with_volume(raw_source, userdata, callback_on_end, WATCH_BUZZER_VOLUME_LOUD);
}
void watch_buzzer_play_raw_source_with_volume(watch_buzzer_raw_source_t raw_source, void* userdata, watch_cb_t callback_on_end, watch_buzzer_volume_t volume) {
watch_buzzer_abort_sequence();
// prepare buzzer
watch_enable_buzzer();
watch_set_buzzer_off();
_buzzer_is_active = true;
if (_cb_start_global) {
_cb_start_global();
}
_raw_source = raw_source;
_userdata = userdata;
_cb_finished = callback_on_end;
_volume = volume == WATCH_BUZZER_VOLUME_SOFT ? 5 : 25;
_seq_position = 0;
_tone_ticks = 0;
// initiate 64 hz callback
_em_interval_id = emscripten_set_interval(cb_watch_buzzer_raw_source, (double)(1000/64), (void *)NULL);
}
void cb_watch_buzzer_raw_source(void *userData) {
// callback for reading the note sequence
(void) userData;
uint16_t period;
uint16_t duration;
bool done;
if (_tone_ticks == 0) {
done = _raw_source(_seq_position, _userdata, &period, &duration);
if (done) {
// end the sequence
watch_buzzer_abort_sequence();
} else {
if (period == WATCH_BUZZER_PERIOD_REST) {
watch_set_buzzer_off();
} else {
watch_set_buzzer_period_and_duty_cycle(period, _volume);
watch_set_buzzer_on();
}
// set duration ticks and move to next tone
_tone_ticks = duration;
_seq_position += 1;
}
} else {
_tone_ticks--;
}
}
void watch_buzzer_abort_sequence(void) {
// ends/aborts the sequence
if (_em_interval_id) _em_interval_stop();