/*--------------------------------------------------------------------*/
static void dac_setup(void)
{
/* Enable the DAC clock on APB1 */
rcc_periph_clock_enable(RCC_DAC);
/* Setup the DAC channel 1, with timer 2 as trigger source.
* Assume the DAC has woken up by the time the first transfer occurs */
dac_trigger_enable(CHANNEL_1);
dac_set_trigger_source(DAC_CR_TSEL1_T2);
dac_dma_enable(CHANNEL_1);
dac_enable(CHANNEL_1);
}
/*--------------------------------------------------------------------*/
void dac_setup(void)
{
/* Enable the DAC clock on APB1 */
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_DACEN);
/* Set port PA4 for DAC1 output to 'alternate function'. Output driver mode is irrelevant. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO4);
/* Setup the DAC channel 1, with timer 2 as trigger source. Assume the DAC has
woken up by the time the first transfer occurs */
dac_trigger_enable(CHANNEL_1);
dac_set_trigger_source(DAC_CR_TSEL1_T2);
dac_dma_enable(CHANNEL_1);
dac_enable(CHANNEL_1);
}
void funcgen_plat_dac_setup(int channel) {
/* Setup the DAC channel 1, with timer 2 as trigger source.
* Assume the DAC has woken up by the time the first transfer occurs */
int chan;
switch (channel) {
case 1: dac_set_trigger_source(DAC_CR_TSEL2_T7);
chan = CHANNEL_2;
break;
default:
case 0:
dac_set_trigger_source(DAC_CR_TSEL1_T6);
chan = CHANNEL_1;
break;
}
dac_trigger_enable(chan);
dac_dma_enable(chan);
dac_enable(chan);
}
