sdhal.h

基于642的sd卡读写程序

#include <csl_mcbsp.h> 
#include <csl_stdinc.h>
/* 检测卡是否完全插入  check weather card is insert entirely */
extern Uint8 SD_ChkCard(void);


extern Uint8 SD_ChkCardWP(void);


/* 初始化访问SD卡的硬件初始化 initialize the hardware that access sd card */
extern void SD_HardWareInit(void);

/* 设置SPI的时钟小于400kHZ set the clock of SPI less than 400kHZ */
//extern void SPI_Clk400k(void);

/* 设置SPI的clock到最大值 set the clock of SPI to maximum */
//extern void SPI_ClkToMax(void);

/* 通过SPI接口发送一个字节 send a byte by SPI interface */
extern void SPI_SendByte(Uint8 byte);

/* 从SPI接口接收一个字节 receive a byte from SPI interface */
extern Uint8 SPI_RecByte(void);

/* 片选SPI从机 select the SPI slave */
//extern void SPI_CS_Assert(void);

/* 不片选SPI从机 not select the SPI slave */
//extern void SPI_CS_Deassert(void);

extern MCBSP_Handle SPI_INIT(Uint8 x);   /* Function prototypes */
//extern MCBSP_Handle SPI_ClkToMax(Uint8);