Struct DmaDriver 

pub struct DmaDriver<'d, T: DmaInstance> { /* private fields */ }

DMA controller driver.

Implementations

impl<'d, T: DmaInstance> DmaDriver<'d, T>

pub fn new(_dma: impl Into<PhantomData<&'d T>>) -> Self

Create a new DMA driver from a DMA peripheral.

pub fn enable_controller(&mut self)

Enable the DMA controller.

pub fn disable_controller(&mut self)

Disable the DMA controller.

pub fn configure_channel( &mut self, channel: u8, src_addr: u32, dst_addr: u32, transfer_size: u16, config: &DmaChannelConfig, )

Configure a DMA channel.

• channel — Logical channel number (0-3 for MDMA, 8-11 for SDMA).
• src_addr — Source address.
• dst_addr — Destination address.
• transfer_size — Number of source-width beats to transfer.
• config — Channel configuration.

pub fn enable_channel(&mut self, channel: u8)

Enable a specific DMA channel.

pub fn disable_channel(&mut self, channel: u8)

Disable a specific DMA channel.

pub fn channel_enabled(&self, channel: u8) -> bool

Check if a DMA channel is enabled.

pub fn channel_active(&self, channel: u8) -> bool

Check if a channel has data in its FIFO (active transfer).

pub fn halt_channel(&mut self, channel: u8)

Halt a DMA channel (ignore further DMA requests).

pub fn resume_channel(&mut self, channel: u8)

Resume a halted DMA channel.

pub fn burst_request(&mut self, channel: u8)

Issue a software burst request for a channel.

pub fn single_request(&mut self, channel: u8)

Issue a software single request for a channel.

pub fn raw_interrupt_status(&self) -> (u8, u8)

Get the raw interrupt status.

Returns (transfer_done_mask, error_mask). Bit n of each mask is the physical channel n of this controller — i.e. logical channel CHANNEL_BASE + n. For SDMA, logical channel 8 is bit 0, channel 9 is bit 1, etc. (the controller’s per-channel status registers are local).

pub fn interrupt_status(&self) -> (u8, u8)

Get the masked interrupt status.

Returns (transfer_done_mask, error_mask), with the same physical channel bit indexing as raw_interrupt_status (bit n = physical channel n = logical CHANNEL_BASE + n).

pub fn clear_transfer_interrupt(&mut self, channel: u8)

Clear transfer complete interrupt for a channel.

pub fn clear_error_interrupt(&mut self, channel: u8)

Clear error interrupt for a channel.

pub fn set_sync(&mut self, sync_mask: u16)

Set DMA sync configuration.

Each bit controls sync for the corresponding channel (0 = enable sync logic, 1 = disable sync logic).

impl<'d> DmaDriver<'d, Dma0>

pub fn new_dma(_dma: Dma<'d>) -> Self

Create a new primary DMA driver.

impl<'d> DmaDriver<'d, Sdma0>

pub fn new_sdma(_sdma: Sdma<'d>) -> Self

Create a new secure DMA driver.