dma.c File Reference

DMA Controller. More...

#include "libdragon.h"
#include "regsinternal.h"

Defines
PI Status Register Bit Definitions
#define	PI_STATUS_DMA_BUSY   ( 1 << 0 )
	PI DMA Busy.
#define	PI_STATUS_IO_BUSY   ( 1 << 1 )
	PI IO Busy.
#define	PI_STATUS_ERROR   ( 1 << 2 )
	PI Error.
Functions
volatile int	dma_busy ()
	Return whether the DMA controller is currently busy.
void	dma_read (void *ram_address, unsigned long pi_address, unsigned long len)
	Read from a peripheral.
void	dma_write (void *ram_address, unsigned long pi_address, unsigned long len)
	Write to a peripheral.
uint32_t	io_read (uint32_t pi_address)
	Read a 32 bit integer from a peripheral.
void	io_write (uint32_t pi_address, uint32_t data)
	Write a 32 bit integer to a peripheral.

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Detailed Description

DMA Controller.