Struct embassy_stm32::dma::DoubleBuffered

pub struct DoubleBuffered<'a, C: Channel, W: Word> { /* private fields */ }

Double-buffered DMA transfer.

Implementations

impl<'a, C: Channel, W: Word> DoubleBuffered<'a, C, W>

pub unsafe fn new_read( channel: impl Peripheral<P = C> + 'a, _request: Request, peri_addr: *mut W, buf0: *mut W, buf1: *mut W, len: usize, options: TransferOptions ) -> Self

Create a new read DMA transfer (peripheral to memory).

pub unsafe fn set_buffer0(&mut self, buffer: *mut W)

Set the first buffer address.

You may call this while DMA is transferring the other buffer.

pub unsafe fn set_buffer1(&mut self, buffer: *mut W)

Set the second buffer address.

You may call this while DMA is transferring the other buffer.

pub fn is_buffer0_accessible(&mut self) -> bool

Returh whether buffer0 is accessible (i.e. whether DMA is transferring buffer1 now)

pub fn set_waker(&mut self, waker: &Waker)

Set a waker to be woken when one of the buffers is being transferred.

pub fn request_stop(&mut self)

Request the transfer to stop.

This doesn’t immediately stop the transfer, you have to wait until is_running returns false.

pub fn is_running(&mut self) -> bool

Return whether this transfer is still running.

If this returns false, it can be because either the transfer finished, or it was requested to stop early with request_stop.

pub fn get_remaining_transfers(&self) -> u16

Gets the total remaining transfers for the channel Note: this will be zero for transfers that completed without cancellation.

Trait Implementations

impl<'a, C: Channel, W: Word> Drop for DoubleBuffered<'a, C, W>

fn drop(&mut self)

Executes the destructor for this type.