你用标准做法师一下，
函数alt_dma_txchan_open (“/dev/dma_0”);
函数int alt_dma_txchan_send (alt_dma_txchan dma,
const void* from,
alt_u32 length,
alt_txchan_done* done,
void* handle);
函数int alt_dma_rxchan_prepare (alt_dma_rxchan dma,
void* data,
alt_u32 length,
alt_rxchan_done* done,
void* handle); |
