Struct Adc

pub struct Adc<'d, T: Instance> { /* private fields */ }

Analog to Digital driver.

Implementations

impl<'d, T: Instance> Adc<'d, T>

pub fn new(adc: impl Peripheral<P = T> + 'd) -> Self

Create a new ADC driver.

pub fn enable_vrefint(&self) -> VrefInt

Enable reading the voltage reference internal channel.

pub fn enable_temperature(&self) -> Temperature

Enable reading the temperature internal channel.

pub fn enable_vbat(&self) -> Vbat

Enable reading the vbat internal channel.

pub fn set_sample_time(&mut self, sample_time: SampleTime)

Set the ADC sample time.

pub fn sample_time(&self) -> SampleTime

Get the ADC sample time.

pub fn set_resolution(&mut self, resolution: Resolution)

Set the ADC resolution.

pub fn set_averaging(&mut self, averaging: Averaging)

Set hardware averaging.

pub fn blocking_read(&mut self, channel: &mut impl AdcChannel<T>) -> u16

Read an ADC channel.

pub async fn read( &mut self, rx_dma: &mut impl RxDma<T>, sequence: impl ExactSizeIterator<Item = (&mut AnyAdcChannel<T>, SampleTime)>, readings: &mut [u16], )

Read one or multiple ADC channels using DMA.

sequence iterator and readings must have the same length.

Example

use embassy_stm32::adc::{Adc, AdcChannel}

let mut adc = Adc::new(p.ADC1);
let mut adc_pin0 = p.PA0.degrade_adc();
let mut adc_pin2 = p.PA2.degrade_adc();
let mut measurements = [0u16; 2];

adc.read_async(
    p.DMA2_CH0,
    [
        (&mut *adc_pin0, SampleTime::CYCLES112),
        (&mut *adc_pin2, SampleTime::CYCLES112),
    ]
    .into_iter(),
    &mut measurements,
)
.await;
defmt::info!("measurements: {}", measurements);