Struct CortexMDmaFence 

pub struct CortexMDmaFence { /* private fields */ }

Implementations

impl CortexMDmaFence

An implementation of DmaFence for ARM Cortex-M systems.

The provided release and acquire methods use opaque assembly blocks and the THUMB DMB instructions to make prior writes to shared buffers visible to DMA devices, and DMA writes visible subsequent memory reads, as specified in the ARM Cortex-M Programming Guide to Memory Barrier Instructions 1.

pub unsafe fn new() -> Self

Construct a new CortexMDmaFence.

Safety

Users of this function guarantee that this fence is an appropriate implementation of DmaFence for the platform on which this code is running. In practice, this means that users must assert to be running on an ARM Cortex-M (ARM-v6m / ARM-v7m) CPU.

Trait Implementations

impl Clone for CortexMDmaFence

fn clone(&self) -> CortexMDmaFence

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CortexMDmaFence

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

Formats the value using the given formatter.

impl DmaFence for CortexMDmaFence

Available on not (ARM and target_os=none).

fn release<T>(self, _buf: *mut [T])

Expose prior writes to in-memory buffers to subsequent DMA operations.

fn acquire<T>(self, _buf: *mut [T])

Expose prior writes by DMA peripherals to subsequent memory reads.

impl Copy for CortexMDmaFence