mmc_sd.h

基於MCU c51/8051 讀寫SD/MMC card 再以USB 傳回電腦的範例程序

/* ELEC254 Group32 USB SD Card Reader */

#ifndef __MMC_SD_h__
#define __MMC_SD_h__

#define uint8  unsigned char
#define  int8    signed char
#define uint16 unsigned int
#define  int16   signed int
#define uint32 unsigned long
#define  int32   signed long

#define MMC_SD_PORT       PORTB
#define MMC_SD_CS_PIN     0 
#define DDR_INI() DDRB |= _BV(0)|_BV(2)|_BV(1)
#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 void SPI_High(void);
extern uint8 MMC_SD_SendCommand(uint8 cmd, uint32 arg);
extern uint8 SPI_WriteByte(uint8 val);
extern uint32_t MMC_SD_ReadCapacity(void);
#endif