mmc.h

这是一个MSP430单片机的MMC卡的读写程序。略作修改就可以用到别的型号MCU上。

#define DUMMY 0xff
//定义常量
#define MMC_START_DATA_BLOCK_TOKEN          0xfe
#define MMC_START_DATA_MULTIPLE_BLOCK_READ  0xfe
#define MMC_START_DATA_BLOCK_WRITE          0xfe
#define MMC_START_DATA_MULTIPLE_BLOCK_WRITE 0xfc
#define MMC_STOP_DATA_MULTIPLE_BLOCK_WRITE  0xfd
#define MMC_R1_RESPONSE       0x00
#define MMC_SUCCESS           0x00
#define MMC_BLOCK_SET_ERROR   0x01
#define MMC_RESPONSE_ERROR    0x02
#define MMC_DATA_TOKEN_ERROR  0x03
#define MMC_INIT_ERROR        0x04
#define MMC_CRC_ERROR         0x10
#define MMC_WRITE_ERROR       0x11
#define MMC_OTHER_ERROR       0x12
#define MMC_TIMEOUT_ERROR     0xFF

//命令常量
#define MMC_GO_IDLE_STATE          0x40 
#define MMC_SEND_OP_COND           0x41 
#define MMC_READ_CSD               0x49 
#define MMC_SEND_CID               0x4a  
#define MMC_STOP_TRANSMISSION      0x4c  
#define MMC_SEND_STATUS            0x4d  
#define MMC_SET_BLOCKLEN           0x50   
#define MMC_READ_SINGLE_BLOCK      0x51   
#define MMC_READ_MULTIPLE_BLOCK    0x52  
#define MMC_CMD_WRITEBLOCK         0x54   
#define MMC_WRITE_BLOCK            0x58 
#define MMC_WRITE_MULTIPLE_BLOCK   0x59 
#define MMC_WRITE_CSD              0x5b  
#define MMC_SET_WRITE_PROT         0x5c  
#define MMC_CLR_WRITE_PROT         0x5d  
#define MMC_SEND_WRITE_PROT        0x5e  
#define MMC_TAG_SECTOR_START       0x60  
#define MMC_TAG_SECTOR_END         0x61     
#define MMC_UNTAG_SECTOR           0x62     
#define MMC_TAG_EREASE_GROUP_START 0x63    
#define MMC_TAG_EREASE_GROUP_END   0x64     
#define MMC_UNTAG_EREASE_GROUP     0x65     
#define MMC_EREASE                 0x66    
#define MMC_READ_OCR               0x67    
#define MMC_CRC_ON_OFF             0x68     


char initMMC (void);
char mmc_check(void);
void mmcSendCmd (const char cmd, unsigned long data, const char crc);
char mmc_GoIdle();
char mmcSetBlockLength (const unsigned long);
char mmcReadBlock(const unsigned long address, const unsigned long count, unsigned char *pBuffer);
char mmcWriteBlock (const unsigned long address, const unsigned long count, unsigned char *pBuffer);
char mmcReadRegister(const char, const unsigned char, unsigned char *pBuffer);
unsigned long MMC_ReadCardSize(void);