sd._h

来自「AVR单片机系统开发经典实例部分源程序」· _H 代码 · 共 24 行

//---------------------------- SD卡驱动程序 ----------------------------
//
//简化版SD卡驱动程序
//整理日期：2009.7.8
//
//------------------------------------------------------------------------

#include"config.h"
#include "SPI.h"

#define SD_CS_BIT  1
#define SD_CS_DDR  DDRA
#define SD_CS_PORT PORTA

#define SPI_CS_Assert    SD_CS_PORT &= ~(1<<SD_CS_BIT)  
#define SPI_CS_Deassert  SD_CS_PORT |=  1<<SD_CS_BIT


extern void SD_Port_Init(void);
extern uint8 SD_Init(void);
extern uint8 SD_ReadBlock(uint32 sector, uint8* buffer);
extern uint8 SD_WriteSingleBlock(uint32 sector,uint8*buffer);