Struct DmaDescriptor

#[repr(C)]
pub struct DmaDescriptor {
    pub flags: DmaDescriptorFlags,
    pub buffer: *mut u8,
    pub next: *mut DmaDescriptor,
}

Available on crate feature unstable only.

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 Format for DmaDescriptor

where DmaDescriptorFlags: Format, *mut u8: Format, *mut DmaDescriptor: Format,

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl PartialEq for DmaDescriptor

fn eq(&self, other: &DmaDescriptor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for DmaDescriptor

impl Eq for DmaDescriptor

impl Send for DmaDescriptor

impl StructuralPartialEq for DmaDescriptor