dma.h

来自「it is a sample code for s3c2410 board.」· C头文件 代码 · 共 37 行

#ifndef	DMA_H
#define	DMA_H

// GDMA	Control	Register
#define	GDMA_RUN			0x0001
#define	GDMA_BUSY			0x0002

#define	GDMA_MODE			0x000C
#define	GDMA_MEM2MEM		0x0000
#define	GDMA_EXTDREQ		0x0004
#define	GDMA_U0MODE			0x0008
#define	GDMA_U1MODE			0x000C

#define	GDMA_DST_DEC		0x0010
#define	GDMA_SRC_DEC		0x0020
#define	GDMA_DST_FIX		0x0040
#define	GDMA_SRC_FIX		0x0080
#define	GDMA_INT_ENABLE		0x0100
#define	GDMA_RESET			0x0200	
#define	GDMA_MEM2UART		0x0400	
#define	GDMA_BLOCK			0x0800	
#define	GDMA_TX_WIDTH		0x3000
#define	GDMA_TX_BYTE		0x0000
#define	GDMA_TX_HALFWORD	0x1000
#define	GDMA_TX_WORD		0x2000
#define	GDMA_NO_USE			0x3000
#define	GDMA_CONTINUOUS		0x4000
#define	GDMA_DEMAND			0x8000
#define	GDMA_WIDTH_BTYE		0
#define	GDMA_WIDTH_HWORD	(1<<12)
#define	GDMA_WIDTH_WORD		(2<<12)

void UART_TX_DMA(void);
void UART_RX_DMA(void);
#endif