Trait WriteBuffer

pub unsafe trait WriteBuffer {
    // Required method
    unsafe fn write_buffer(&mut self) -> (*mut u8, usize);
}

Available on crate feature unstable only.

Trait for buffers that can be given to DMA for writing.

Safety

Once the write_buffer method has been called, it is unsafe to call any &mut self methods, except for write_buffer, on this object as long as the returned value is in use (by DMA).

Required Methods

unsafe fn write_buffer(&mut self) -> (*mut u8, usize)

Provide a buffer usable for DMA writes.

The return value is:

• pointer to the start of the buffer
• buffer size in bytes

Safety

Once this method has been called, it is unsafe to call any &mut self methods, except for write_buffer, on this object as long as the returned value is in use (by DMA).

Implementations on Foreign Types

impl<W> WriteBuffer for &mut [W]

where W: Word,

unsafe fn write_buffer(&mut self) -> (*mut u8, usize)

impl<W, const S: usize> WriteBuffer for &mut [W; S]

where W: Word,

unsafe fn write_buffer(&mut self) -> (*mut u8, usize)

impl<W, const S: usize> WriteBuffer for [W; S]

where W: Word,

unsafe fn write_buffer(&mut self) -> (*mut u8, usize)

Implementors