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Diffstat (limited to 'platforms/chibios/drivers/audio_pwm_software.c')
-rw-r--r--platforms/chibios/drivers/audio_pwm_software.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/platforms/chibios/drivers/audio_pwm_software.c b/platforms/chibios/drivers/audio_pwm_software.c
index 15c3e98b6a..e01f86ea52 100644
--- a/platforms/chibios/drivers/audio_pwm_software.c
+++ b/platforms/chibios/drivers/audio_pwm_software.c
@@ -57,7 +57,7 @@ static float channel_1_frequency = 0.0f;
void channel_1_set_frequency(float freq) {
channel_1_frequency = freq;
- if (freq <= 0.0) // a pause/rest has freq=0
+ if (freq <= 0.0) // a pause/rest has freq=0
return;
pwmcnt_t period = (pwmCFG.frequency / freq);
@@ -68,7 +68,9 @@ void channel_1_set_frequency(float freq) {
PWM_PERCENTAGE_TO_WIDTH(&AUDIO_PWM_DRIVER, (100 - note_timbre) * 100));
}
-float channel_1_get_frequency(void) { return channel_1_frequency; }
+float channel_1_get_frequency(void) {
+ return channel_1_frequency;
+}
void channel_1_start(void) {
pwmStop(&AUDIO_PWM_DRIVER);
@@ -81,10 +83,10 @@ void channel_1_start(void) {
void channel_1_stop(void) {
pwmStop(&AUDIO_PWM_DRIVER);
- palClearLine(AUDIO_PIN); // leave the line low, after last note was played
+ palClearLine(AUDIO_PIN); // leave the line low, after last note was played
#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
- palClearLine(AUDIO_PIN_ALT); // leave the line low, after last note was played
+ palClearLine(AUDIO_PIN_ALT); // leave the line low, after last note was played
#endif
}
@@ -100,7 +102,7 @@ static void pwm_audio_period_callback(PWMDriver *pwmp) {
static void pwm_audio_channel_interrupt_callback(PWMDriver *pwmp) {
(void)pwmp;
if (channel_1_frequency > 0) {
- palSetLine(AUDIO_PIN); // generate a PWM signal on any pin, not necessarily the one connected to the timer
+ palSetLine(AUDIO_PIN); // generate a PWM signal on any pin, not necessarily the one connected to the timer
#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
palClearLine(AUDIO_PIN_ALT);
#endif
@@ -131,7 +133,7 @@ void audio_driver_initialize(void) {
palClearLine(AUDIO_PIN_ALT);
#endif
- pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER); // enable pwm callbacks
+ pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER); // enable pwm callbacks
pwmEnableChannelNotification(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1);
gptStart(&AUDIO_STATE_TIMER, &gptCFG);
@@ -155,10 +157,10 @@ void audio_driver_stop(void) {
* and updates the pwm to output that frequency
*/
static void gpt_callback(GPTDriver *gptp) {
- float freq; // TODO: freq_alt
+ float freq; // TODO: freq_alt
if (audio_update_state()) {
- freq = audio_get_processed_frequency(0); // freq_alt would be index=1
+ freq = audio_get_processed_frequency(0); // freq_alt would be index=1
channel_1_set_frequency(freq);
}
}