fifo.h File Reference

DSP <-> ARM9 FIFO transfer utilities. More...

#include <nds/arm9/teak/dsp.h>

Functions
static void	dspFifoReadData (u16 src, u16 *dst, int length)
	Receives data from DSP data memory using the FIFO using default settings. More...
void	dspFifoRecv (DSP_PCFG_MEMSEL mem, u16 src, bool fixedSrc, u16 *dst, bool fixedDst, int length, DSP_PCFG_RLEN lengthMode)
	Receives data from DSP memory using the FIFO. More...
void	dspFifoSend (DSP_PCFG_MEMSEL mem, const u16 *src, bool fixedSrc, u16 dst, bool fixedDst, int length)
	Sends data to the DSP memory using the FIFO. More...
static void	dspFifoWriteData (const u16 *src, u16 dst, int length)
	Sends data to the DSP data memory using the FIFO using default settings. More...

Detailed Description

DSP <-> ARM9 FIFO transfer utilities.

This file contains functions to read and write DSP memory from the ARM9.

Function Documentation

dspFifoReadData()

static void dspFifoReadData ( u16  src, u16 *  dst, int  length  )

inlinestatic

Receives data from DSP data memory using the FIFO using default settings.

Parameters

src	Source address in the selected DSP memory (16 bit units)
dst	Destination address in the ARM9 memory map.
length	Length of the transfer in 16 bit units.

dspFifoRecv()

void dspFifoRecv	(	DSP_PCFG_MEMSEL	mem,
		u16	src,
		bool	fixedSrc,
		u16 *	dst,
		bool	fixedDst,
		int	length,
		DSP_PCFG_RLEN	lengthMode
	)

Receives data from DSP memory using the FIFO.

This can't read from program memory.

Parameters

mem	Source memory. DSP_PCFG_MEMSEL_PROG not allowed.
src	Source address in the selected DSP memory (16 bit units)
fixedSrc	True if the source address is fixed.
dst	Destination address in the ARM9 memory map.
fixedDst	True if the destination address is fixed.
length	Length of the transfer in 16 bit units.
lengthMode	Length mode of the transfer. Usually DSP_PCFG_RLEN_FREE.

dspFifoSend()

void dspFifoSend	(	DSP_PCFG_MEMSEL	mem,
		const u16 *	src,
		bool	fixedSrc,
		u16	dst,
		bool	fixedDst,
		int	length
	)

Sends data to the DSP memory using the FIFO.

This can't write to program memory.

Parameters

mem	Destination memory. DSP_PCFG_MEMSEL_PROG isn't allowed.
src	Source address in the ARM9 memory map.
fixedSrc	True if the source address is fixed.
dst	Destination address in the selected DSP memory (16 bit units).
fixedDst	True if the destination address is fixed
length	Length of the transfer in 16 bit units.

dspFifoWriteData()

static void dspFifoWriteData ( const u16 *  src, u16  dst, int  length  )

inlinestatic

Sends data to the DSP data memory using the FIFO using default settings.

This can't write to program memory.

Parameters

src	Source address in the ARM9 memory map.
dst	Destination address in the selected DSP memory (16 bit units).
length	Length of the transfer in 16 bit units.