Struct DmaDescriptor

pub struct DmaDescriptor {
    pub flags: DmaDescriptorFlags,
    pub buffer: *mut u8,
    pub next: *mut DmaDescriptor,
}

A DMA transfer descriptor.

Fields

flags: DmaDescriptorFlags

Descriptor flags.

buffer: *mut u8

Address of the buffer.

next: *mut DmaDescriptor

Address of the next descriptor. If the current descriptor is the last one, this value is 0. This field can only point to internal RAM.

Implementations

impl DmaDescriptor

pub const EMPTY: Self = _

An empty DMA descriptor used to initialize the descriptor list.

pub fn reset_for_rx(&mut self)

Resets the descriptor for a new receive transfer.

pub fn reset_for_tx(&mut self, set_eof: bool)

Resets the descriptor for a new transmit transfer. See DmaDescriptorFlags::suc_eof for more details on the set_eof parameter.

pub fn set_size(&mut self, len: usize)

Set the size of the buffer. See DmaDescriptorFlags::size.

pub fn set_length(&mut self, len: usize)

Set the length of the descriptor. See DmaDescriptorFlags::length.

pub fn size(&self) -> usize

Returns the size of the buffer. See DmaDescriptorFlags::size.

pub fn len(&self) -> usize

Returns the length of the descriptor. See DmaDescriptorFlags::length.

pub fn set_suc_eof(&mut self, suc_eof: bool)

Set the suc_eof bit. See DmaDescriptorFlags::suc_eof.

pub fn set_owner(&mut self, owner: Owner)

Set the owner. See DmaDescriptorFlags::owner.

pub fn owner(&self) -> Owner

Returns the owner. See DmaDescriptorFlags::owner.

Trait Implementations

impl Clone for DmaDescriptor

fn clone(&self) -> DmaDescriptor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DmaDescriptor

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

Formats the value using the given formatter.

impl Copy for DmaDescriptor

impl Send for DmaDescriptor