Struct SpuDma 

pub struct SpuDma { /* private fields */ }

DMA channel 4 (RAM to SPU RAM and back) and the SPU transfer port.

Implementations

impl SpuDma

pub fn write_blocks(&mut self, words: &[u32], block_words: u16) -> bool

Copy words to the SPU over DMA channel 4, in blocks of block_words words, and wait for the channel to finish.

Enables the channel without disturbing the others, starts a block-sync transfer, and ends it with wait_or_abort, so the SPU has taken every word or the channel has been aborted by the time this returns. The caller has already put the SPU in its DMA-write transfer mode.

Returns false without starting anything when words is empty (a zero block count means 65,536 blocks on silicon), when block_words is 0 or does not divide the length, or when the block count does not fit the 16-bit field; and false when the channel wedged and was aborted.

impl SpuDma

pub const unsafe fn steal() -> Self

Make a token without going through psx_rt::Peripherals::take().

Safety

The caller must not use this token while another one of the same type is in use: two owners of one device each assume they are the only driver programming it.

Trait Implementations

impl Debug for SpuDma

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

Formats the value using the given formatter.