Enum imxrt_hal::dma::channel::Configuration

#[non_exhaustive]
pub enum Configuration {
    Off,
    Enable {
        source: u32,
        periodic: bool,
    },
    AlwaysOn,
}

DMAMUX channel configuration

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Off

The DMAMUX channel is disabled

Enable

Fields

source: u32

The DMA channel source (slot number)

Specifies which DMA source is routed to the DMA channel.

periodic: bool

Set the periodic triggering flag to schedule DMA transfers on PIT timer scheduling.

periodic only works for the first four DMA channels, since it corresponds to the PIT timers.

The DMAMUX is enabled, permitting hardware triggering. See enable to enable the channel without periodic triggering.

AlwaysOn

The DMAMUX is always on, and there’s no need for software or hardware activation

Use AlwaysOn for

• memory-to-memory transfers
• memory to external bus transfers

Implementations

impl Configuration

pub const fn enable(source: u32) -> Configuration

Enable the channel without triggering

Shorthand for ChannelConfiguration::Enable { source, periodic: false }. Use enable() to avoid possible panics in set_channel_configuration.

Trait Implementations

impl Clone for Configuration

fn clone(&self) -> Configuration

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Configuration

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

Formats the value using the given formatter.

impl PartialEq for Configuration

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for Configuration

impl Eq for Configuration

impl StructuralEq for Configuration

impl StructuralPartialEq for Configuration