Struct DbufWrite 

pub struct DbufWrite<'a, 'b, T: Copy, const N: usize> { /* private fields */ }

Continuous DMA-write typestate handle for double-buffer mode.

The DMA engine writes M0 and M1 alternately. The CPU is the consumer and may drain the inactive bank through a BankGuard<Write, _, _>.

Implementations

impl<'a, 'b, T: Copy, const N: usize> DbufWrite<'a, 'b, T, N>

pub fn m0_dma_addr(&self) -> DmaAddr

DMA bus address of the M0 bank.

pub fn m1_dma_addr(&self) -> DmaAddr

DMA bus address of the M1 bank.

pub fn bank_guard<'g, C: DcaCache>( &'g mut self, ctx: &mut DcaCacheCtx<'_, C>, current_target: Bank, ) -> BankGuard<'g, Write, T, N>

Acquire a guard over the inactive bank.

Cache op for Write direction: DcaCache::invalidate over the inactive bank’s full extent so the CPU’s next read of that bank observes DMA-written data.

pub fn stop_double_buffer<C: DcaCache>( self, ctx: &mut DcaCacheCtx<'_, C>, ) -> DbufCpu<'a, 'b, T, N>

Stop the double-buffer transfer and transition back to DbufCpu.