Struct DmaSource 

pub struct DmaSource { /* private fields */ }

Adapter for using an ADC input as a DMA source.

This adapter exposes the lower-level DMA interface. However, you may find it easier to use the interface available in dma.

Implementations

impl DmaSource

pub fn new(adc: Adc, input: AnalogInput) -> Self

Create a new DMA source object for a DMA transfer.

The analog input is consumed to extract its channel, but is not stored in the driver.

pub fn without_pin(adc: Adc, channel: u32) -> Self

Create an ADC DMA source without a configured ADC input.

You’re responsible for configuring the pin as an ADC input.

pub fn r0(&self) -> *const RORegister<u32>

Returns a pointer to the ADC’s R0 register.

You should use this pointer when coordinating a DMA transfer. You’re not expected to explicitly read from this pointer in software.

pub fn enable_dma(&mut self)

Enable the ADC’s DMA support.

This is necessary to start a transfer. However, this in itself does not start a DMA transfer.

pub fn disable_dma(&mut self)

Disable the ADC’s DMA support.

See the DMA chapter in the reference manual to understand when this should be called in the DMA transfer lifecycle.

Trait Implementations

impl Source<u16> for DmaSource

Available on chip=imxrt1010 or chip=imxrt1020 or chip=imxrt1060 only.

fn source_signal(&self) -> u32

Peripheral source request signal

fn source_address(&self) -> *const u16

Returns a pointer to the register from which the DMA channel reads data

fn enable_source(&mut self)

Perform any actions necessary to enable DMA transfers

fn disable_source(&mut self)

Perform any actions necessary to disable or cancel DMA transfers