mmc_hardware.h

来自「FAT16 Filesystem on Philips LPC2000 seri」· C头文件 代码 · 共 36 行

// vi:nowrap:
#ifndef INC_MMC_HARDWARE_H
#define INC_MMC_HARDWARE_H

#include <sysdefs.h>

#define CMD0 0x40	// software reset
#define CMD1 0x41	// brings card out of idle state
#define CMD13 0x4d	// read status word of card.
#define CMD16 0x50	// sets the block length used by the memory card
#define CMD17 0x51	// read single block
#define CMD24 0x58	// writes a single block

#ifndef BIT
#define BIT(n)              (1 << (n))
#endif

#define StatusIdle				BIT(0)	// in IDLE state and initializing process.
#define StatusEraseReset		BIT(1)	// erase sequence aborted.
#define StatusIllegalCmd		BIT(2)	// illegal command was sent.
#define StatusErrorCRC			BIT(3)	// bad CRC in last command.
#define StatusEraseSeqErr		BIT(4)	// error in sequence of erase commands.
#define StatusAddrError			BIT(5)	// address did not match block length.
#define StatusParamError		BIT(6)	// illegal argument used in command.
#define StatusDataAccepted		0x5		// write command is ok to go.
#define StatusDataCrcError		0xb		// crc error on data block.
#define StatusDataWriteError	0xd		// write error on media (?).

bool mmcInit(void);
bool mmcWriteBlock(long sector, const uchar * buf);
bool mmcReadBlock(long sector, uchar * buf);
bool initMMCdrive (void);

#endif