diff options
Diffstat (limited to 'platforms/chibios/drivers/audio_pwm_hardware.c')
-rw-r--r-- | platforms/chibios/drivers/audio_pwm_hardware.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/platforms/chibios/drivers/audio_pwm_hardware.c b/platforms/chibios/drivers/audio_pwm_hardware.c index cd40019ee7..710f397609 100644 --- a/platforms/chibios/drivers/audio_pwm_hardware.c +++ b/platforms/chibios/drivers/audio_pwm_hardware.c @@ -72,7 +72,7 @@ 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); @@ -82,14 +82,18 @@ 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); pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG); } -void channel_1_stop(void) { pwmStop(&AUDIO_PWM_DRIVER); } +void channel_1_stop(void) { + pwmStop(&AUDIO_PWM_DRIVER); +} static void gpt_callback(GPTDriver *gptp); GPTConfig gptCFG = { @@ -108,9 +112,9 @@ void audio_driver_initialize(void) { pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG); // connect the AUDIO_PIN to the PWM hardware -#if defined(USE_GPIOV1) // STM32F103C8 +#if defined(USE_GPIOV1) // STM32F103C8 palSetLineMode(AUDIO_PIN, PAL_MODE_ALTERNATE_PUSHPULL); -#else // GPIOv2 (or GPIOv3 for f4xx, which is the same/compatible at this command) +#else // GPIOv2 (or GPIOv3 for f4xx, which is the same/compatible at this command) palSetLineMode(AUDIO_PIN, PAL_MODE_ALTERNATE(AUDIO_PWM_PAL_MODE)); #endif @@ -135,10 +139,10 @@ 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); } } |