void audio_init() {
if (audio_initialized) {
return;
}
// Check EEPROM
#if defined(STM32_EEPROM_ENABLE) || defined(PROTOCOL_ARM_ATSAM) || defined(EEPROM_SIZE)
if (!eeconfig_is_enabled()) {
eeconfig_init();
}
audio_config.raw = eeconfig_read_audio();
#else // ARM EEPROM
audio_config.enable = true;
#ifdef AUDIO_CLICKY_ON
audio_config.clicky_enable = true;
#endif
#endif // ARM EEPROM
/*
* Starting DAC1 driver, setting up the output pin as analog as suggested
* by the Reference Manual.
*/
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
dacStart(&DACD1, &dac1cfg1);
dacStart(&DACD2, &dac1cfg2);
/*
* Starting GPT6/7 driver, it is used for triggering the DAC.
*/
START_CHANNEL_1();
START_CHANNEL_2();
/*
* Starting a continuous conversion.
*/
dacStartConversion(&DACD1, &dacgrpcfg1, (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE);
dacStartConversion(&DACD2, &dacgrpcfg2, (dacsample_t *)dac_buffer_2, DAC_BUFFER_SIZE);
audio_initialized = true;
if (audio_config.enable) {
PLAY_SONG(startup_song);
} else {
stop_all_notes();
}
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Creates the blinker thread.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
/*
* Starting the DAC driver.
*/
dacStart(&DACD1, &daccfg1);
/*
* Sending the dac_buffer
*/
dacStartConversion(&DACD1, &dacconvgrp1, sine_wave, NSAMPLES);
while (TRUE) {
chThdSleepMilliseconds(1000);
}
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Starting DAC1 driver, setting up the output pins as analog as suggested
* by the Reference Manual.
*/
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
dacStart(&DACD1, &dac1cfg1);
/*
* Starting GPT6 driver, it is used for triggering the DAC.
*/
gptStart(&GPTD6, &gpt6cfg1);
/*
* Starting a continuous conversion.
* Note, the buffer size is divided by two because two elements are fetched
* for each transfer.
*/
dacStartConversion(&DACD1, &dacgrpcfg1,
(dacsample_t *)dac_buffer, DAC_BUFFER_SIZE / 2U);
gptStartContinuous(&GPTD6, 2U);
/*
* Normal main() thread activity, if the button is pressed then the DAC
* transfer is stopped.
*/
while (true) {
if (palReadPad(GPIOA, GPIOA_BUTTON)) {
gptStopTimer(&GPTD6);
dacStopConversion(&DACD1);
}
chThdSleepMilliseconds(500);
}
return 0;
}
static void adctodac(void *arg)
{
uint16_t temp = 0;
adcStart(&ADCD1, &adccfg);
dacStart(&DACD1, &dac1cfg1);
gptStart(&GPTD6, &gpt6cfg1);
while(!0)
{
adcStartConversion(&ADCD1, &adccg, samples_buf, ADC_BUF_DEPTH);
temp = samples_buf[0];
//dacPutChannelX(&DACD1, 1U, temp);
dacStartConversion(&DACD1, &dacgrpcfg1, samples_buf, ADC_BUF_DEPTH);
gptStartContinuous(&GPTD6, 2U);
chThdSleepMilliseconds(1);
}
}
/*
* Application entry point.
*/
int main(void) {
halInit();
chSysInit();
/*
* Set PA3 - PA1 to Analog (DAC1_CH1, OPAMP1_INP)
* You will have to connect these with a jumper wire
*/
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_ANALOG);
/*
* Start peripherals
*/
dacStart(&DACD1, &dac1cfg1);
opampStart(&OPAMPD1, &opamp1_conf);
gptStart(&GPTD6, &gpt6cfg1);
/*
* Starting a continuous conversion.
*/
dacStartConversion(&DACD1, &dacgrpcfg1, dac_buffer, DAC_BUFFER_SIZE);
gptStartContinuous(&GPTD6, 2U);
opampEnable(&OPAMPD1);
opampCalibrate();
/*
* Normal main() thread activity.
*/
while (true) {
chThdSleepMilliseconds(250);
palToggleLine(LINE_LED3_RED);
}
return 0;
}
/****************** Thread main loop ***********************************/
msg_t analogue_thread(void *args)
{
(void)args;
chRegSetThreadName("Analogue");
chBSemObjectInit(&bsAnalogueInst, true);
chBSemObjectInit(&bsAnalogueFX, true);
adcInit();
adcStart(&ADCD1, NULL);
adcStart(&ADCD2, NULL);
adcStartConversion(&ADCD1, &adc_con_group_1, (adcsample_t*)buffer1,
INST_BUF_DEPTH);
adcStartConversion(&ADCD2, &adc_con_group_2, (adcsample_t*)fx_samples,
FX_BUF_DEPTH);
dacInit();
dacStart(&DACD1, &dac_cfg);
dacStartConversion(&DACD1, &dac_conv_grp, (dacsample_t*)buffer3,
INST_BUF_DEPTH);
// Enable DAC output buffer:
DACD1.params->dac->CR |= DAC_CR_BOFF1;
/* Start the GPT timers. They reload at after reaching 1 such that
* TRGO frequency equals timer frequency. */
gptStart(&GPTD3, &gpt_inst_config);
GPTD3.tim->CR2 |= STM32_TIM_CR2_MMS(2);
gptStartContinuous(&GPTD3, 2);
GPTD3.tim->DIER &= ~STM32_TIM_DIER_UIE;
gptStart(&GPTD8, &gpt_fx_config);
GPTD8.tim->CR2 |= STM32_TIM_CR2_MMS(2);
gptStartContinuous(&GPTD8, 2);
GPTD8.tim->DIER &= ~STM32_TIM_DIER_UIE;
state = 1;
// States:
// 1 - ADC:buf1, DSP:buf2, DAC:buf3
// 2 - DSP:buf1, DAC:buf2, ADC:buf3
// 3 - DAC:buf1, ADC:buf2, DSP:buf3
/* Wait until the ADC callback boops the semaphore. */
volatile uint16_t *dsp_buf;
while(true) {
chSysLock();
chBSemWaitS(&bsAnalogueInst);
chSysUnlock();
state += 1;
switch(state)
{
case 1:
dmaSetOtherMemory(ADCD1.dmastp, buffer1);
dsp_buf = buffer2;
dmaSetOtherMemory(DACD1.params->dma, buffer3);
break;
case 2:
dmaSetOtherMemory(ADCD1.dmastp, buffer3);
dsp_buf = buffer1;
dmaSetOtherMemory(DACD1.params->dma, buffer2);
break;
case 3:
dmaSetOtherMemory(ADCD1.dmastp, buffer2);
dsp_buf = buffer3;
dmaSetOtherMemory(DACD1.params->dma, buffer1);
break;
default:
state = 1;
dmaSetOtherMemory(ADCD1.dmastp, buffer1);
dsp_buf = buffer2;
dmaSetOtherMemory(DACD1.params->dma, buffer3);
}
dsp_stuff(dsp_buf);
}
}
