sd.h

SD卡的读写

#ifndef SD_h
#define SD_h
//------------------------------------------------------------
// Port define
//-------------------------------------------------------------
#define SD_Disable()	PORTB_Bit0=1
#define SD_Enable()		PORTB_Bit0=0
//------------------------------------------------------------
// Error define
//-------------------------------------------------------------
#define INIT_CMD0_ERROR     0x01
#define INIT_CMD1_ERROR		0x02
#define WRITE_BLOCK_ERROR	0x03
#define READ_BLOCK_ERROR   	0x04

void spi_init(void);
unsigned char SD_Init(void);
unsigned char SD_Read_Block(unsigned long addr);
unsigned char Write_Command_SD(unsigned char cmd,unsigned long arg,unsigned char crc7);
extern unsigned char SD_Buffer[];

#endif