#include <nitro/mi.h> void MI_DmaClear32( u32 dmaNo, void* dest, u32 size ); void MI_DmaClear16( u32 dmaNo, void* dest, u32 size ); void MI_DmaClear32Async( u32 dmaNo, void* dest, u32 size; MIDmaCallback callback, void* arg ); void MI_DmaClear16Async( u32 dmaNo, void* dest, u32 size, MIDmaCallback callback, void* arg );
This function uses DMA to zero-clear memory.
MI_DmaClear16() and MI_DmaClear16Async() fill memory with zeros in 16-bit units. The clear destination address must be 2-byte aligned.
MI_DmaClear32() and MI_DmaClear32Async() fill memory with zeros in 32-bit units. The clear destination address must be 4-byte aligned.
MI_DmaClear16() and MI_DmaClear32() wait within the
function until DMA completes. MI_DmaClear16Async() and MI_DmaClear32Async() call a callback function when DMA ends. The callback function is a MIDmaCallback type (a void type function with an argument removed from void*).
This function calls MI_DmaFill*.
dmaNo |
DMA channel used. |
dest |
Clear destination address. |
size |
Clear size. |
callback |
Callback when DMA ends. |
arg |
Callback argument when DMA ends. |
None
MI_DmaCopy*,
MI_DmaFill*,
MI_DmaSend*,
MI_CpuClear*
10/18/2004 Abbreviated the Internal Operation text.
12/01/2003 Initial version.