SD卡读写源码

uint8SD_initial();uint8SD_response(uint8responseData,uint8tryTimes);uint8SD_writeCommand(uint8command,uint32arg,uint8crc,uint8responseData);uint8SD_writeBlock(uint32arg,uint8*blockData);uint8SD_readBlock(uint32arg,uint8*readBackBlock);uint8SD_readRegister(uint8command,uint8*registerData,uint8registerL