mmc_sd.h

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#ifndef __MMC_SD_h__
#define __MMC_SD_h__

#include "config.h"



#define MMC_SD_PORT       PORTB                    //引脚定义
#define MMC_SD_CS_PIN     4                        //mega16
#define DDR_INI() DDRB |= _BV(4)|_BV(5)|_BV(7)     //mega16
#define SPI_CS_Assert()   MMC_SD_PORT &= ~_BV(MMC_SD_CS_PIN)  
#define SPI_CS_Deassert() MMC_SD_PORT |=  _BV(MMC_SD_CS_PIN)


extern void MMC_SD_Init(void);
extern uint8 MMC_SD_Reset(void);
extern uint8 MMC_SD_ReadSingleBlock(uint32 sector, uint8* buffer);
extern uint8 MMC_SD_WriteSingleBlock(uint32 sector, uint8* buffer);
extern uint32 MMC_SD_ReadCapacity();
extern void SPI_High(void);
uint8 SPI_WriteByte(uint8 val);


#endif