osAi.h File Reference

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Functions
s32	osAiSetFrequency (u32)
s32	osAiSetNextBuffer (void *, u32)
u32	osAiGetLength (void)

Function Documentation

osAiGetLength()

u32 osAiGetLength

(

void

)

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osAiSetFrequency()

s32 osAiSetFrequency

(

u32

freq

)

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osAiSetNextBuffer()

s32 osAiSetNextBuffer	(	void *	buff,
		u32	len )

It is worth noting that a previous hardware bug has been fixed by a software patch in osAiSetNextBuffer. This bug occurred when the address of the end of the buffer specified by osAiSetNextBuffer was at a specific value. This value occurred when the following was true:

(vaddr + nbytes) & 0x00003FFF == 0x00002000

(when the buffer ends with address of lower 14 bits 0x2000) In this case, the DMA transfer does not complete successfully. This can cause clicks and pops in the audio output. This bug no longer requires special handling by the application because it is now patched by osAiSetNextBuffer.

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