/**
* Configure a specific adc.
*/
void adc_config(uint32_t adc, const uint8_t const *channel_array)
{
adc_enable_scan_mode(adc);
adc_set_continuous_conversion_mode(adc);
adc_set_right_aligned(adc);
adc_enable_external_trigger_regular(adc, ADC_CR2_EXTSEL_SWSTART);
adc_set_sample_time_on_all_channels(adc, ADC_SAMPLE_TIME);
adc_enable_dma(adc);
adc_power_on(adc);
{
int i;
/* Wait a bit for the adc to power on. */
for (i = 0; i < 800000; i++) {
__asm("nop");
}
}
adc_reset_calibration(adc);
adc_calibration(adc);
adc_set_regular_sequence(adc, ADC_RAW_SAMPLE_COUNT/2,
(uint8_t *)channel_array);
}
/*--------------------------------------------------------------------*/
void adc_setup(void)
{
rcc_periph_clock_enable(RCC_ADC1);
rcc_periph_clock_enable(RCC_GPIOA);
nvic_enable_irq(NVIC_ADC_IRQ);
/* Set port PA1 for ADC1 to analogue mode. */
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1);
adc_power_on(ADC1);
uint8_t channel[1] = { ADC_CHANNEL1 };
adc_set_regular_sequence(ADC1, 1, channel);
adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2);
adc_enable_scan_mode(ADC1);
adc_set_continuous_conversion_mode(ADC1);
adc_set_sample_time(ADC1, ADC_CHANNEL1, ADC_SMPR_SMP_3CYC);
adc_set_multi_mode(ADC_CCR_MULTI_INDEPENDENT);
adc_set_dma_continue(ADC1);
adc_enable_dma(ADC1);
adc_enable_overrun_interrupt(ADC1);
}
