Struct AnySpiDmaChannel

pub struct AnySpiDmaChannel<'d>(/* private fields */);

Available on crate feature unstable only.

An SPI-compatible type-erased DMA channel.

This struct is a type-erased version of a peripheral singleton. It is useful for creating arrays of peripherals, or avoiding generics. Peripheral singletons can be type erased by using their From implementation.

let any_peripheral = AnySpiDmaChannel::from(peripheral);

Implementations

impl AnySpiDmaChannel<'_>

pub unsafe fn clone_unchecked(&self) -> Self

Unsafely clone this peripheral reference.

Safety

You must ensure that you’re only using one instance of this type at a time.

pub fn reborrow(&mut self) -> AnySpiDmaChannel<'_>

Creates a new peripheral reference with a shorter lifetime.

Use this method if you would like to keep working with the peripheral after you dropped the driver that consumes this.

See Peripheral singleton section for more information.

pub fn downcast<P>(self) -> Result<P, Self>

where Self: TryInto<P, Error = Self>,

Attempts to downcast the pin into the underlying peripheral instance.

Example

// let peri0 = peripherals.PERI0;
// let peri1 = peripherals.PERI1;
let any_peri0 = AnyPeripheral::from(peri0);
let any_peri1 = AnyPeripheral::from(peri1);

let uart0 = any_peri0
    .downcast::<PERI0>()
    .expect("This downcast succeeds because AnyPeripheral was created from Peri0");
let uart0 = any_peri1
    .downcast::<PERI0>()
    .expect_err("This AnyPeripheral was created from Peri1, it cannot be downcast to Peri0");

Trait Implementations

impl<'d> Debug for AnySpiDmaChannel<'d>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'d> DmaChannel for AnySpiDmaChannel<'d>

type Rx = AnySpiDmaRxChannel<'d>

A description of the RX half of a DMA Channel.

type Tx = AnySpiDmaTxChannel<'d>

A description of the TX half of a DMA Channel.

unsafe fn split_internal(self, _: Internal) -> (Self::Rx, Self::Tx)

Splits the DMA channel into its RX and TX halves.

impl<'d> From<DMA_SPI2<'d>> for AnySpiDmaChannel<'d>

fn from(inner: DMA_SPI2<'d>) -> Self

Converts to this type from the input type.

impl<'d> From<DMA_SPI3<'d>> for AnySpiDmaChannel<'d>

fn from(inner: DMA_SPI3<'d>) -> Self

Converts to this type from the input type.

impl<'d> TryFrom<AnySpiDmaChannel<'d>> for DMA_SPI2<'d>

type Error = AnySpiDmaChannel<'d>

The type returned in the event of a conversion error.

fn try_from(any: AnySpiDmaChannel<'d>) -> Result<Self, AnySpiDmaChannel<'d>>

Performs the conversion.

impl<'d> TryFrom<AnySpiDmaChannel<'d>> for DMA_SPI3<'d>

type Error = AnySpiDmaChannel<'d>

The type returned in the event of a conversion error.

fn try_from(any: AnySpiDmaChannel<'d>) -> Result<Self, AnySpiDmaChannel<'d>>

Performs the conversion.