sd_reader_regs.h

SD卡读卡器模块的VHDL及软件驱动代码

#ifndef SD_READER_REGS_H_
#define SD_READER_REGS_H_

#include <io.h>

#define SD_READER_CARDREADY_BIT		0x01	// I
#define SD_READER_DATAREADY_BIT		0x02	// I
#define SD_READER_CRCERR_BIT		0x04	// I
#define SD_READER_AUTOREREAD_BIT	0x08	// I/O
#define SD_READER_STREAMREAD_BIT	0x10	// I/O
#define SD_READER_READCARD_BIT		0x20	// O
#define SD_READER_INITCARD_BIT		0x40	// O
#define SD_READER_RESET_BIT			0x80	// O

#define SD_READER_INIT_STATE	(SD_READER_AUTOREREAD_BIT)

#define IORD_SD_READER_DATA(base)				IORD(base, 0)

#define IORD_SD_READER_STATE(base)				IORD(base, 1)
#define IOWR_SD_READER_STATE(base, state)		IOWR(base, 1, state)
#define SD_READER_STATE_RDMASK					(SD_READER_CARDREADY_BIT|SD_READER_DATAREADY_BIT|SD_READER_CRCERR_BIT|SD_READER_AUTOREREAD_BIT|SD_READER_STREAMREAD_BIT)
#define SD_READER_STATE_WTMASK					(SD_READER_AUTOREREAD_BIT|SD_READER_STREAMREAD_BIT|SD_READER_READCARD_BIT|SD_READER_INITCARD_BIT|SD_READER_RESET_BIT)
#define SD_READER_STATE_RWMASK					(SD_READER_AUTOREREAD_BIT|SD_READER_STREAMREAD_BIT)

#define IOWR_SD_READER_READADDRLO(base, addr)	IOWR(base, 2, addr)
#define IOWR_SD_READER_READADDRHI(base, addr)	IOWR(base, 3, addr)

#endif /*SD_READER_REGS_H_*/