fat32.h

msp430F2xx单片机读写SD卡

#define uchar	unsigned char
#define uint	unsigned int

typedef struct _SYS_INFO_BLOCK{
  unsigned long StartSector;
  unsigned long TotalSector;
  
  uint  BPB_BytesPerSec;  //每扇区字节数
  uchar BPB_SecPerClus;   //每簇扇区数
  
  uchar BPB_NumFATs;    //FAT数(2个)
  uint BPB_RootEntCnt;  //目录区占32个扇区
  uint BPB_TotSec16;
  // INT8 BPB_Media;
  uint BPB_FATSz16;
  uint BPB_SecPerTrk;
  uint BPB_NumHeads;
  unsigned long BPB_HiddSec;
  unsigned long BPB_TotSec32;
  
  unsigned long FatStartSector;
  unsigned long RootStartSector;
  unsigned long FirstDataSector;
  /////////////////////FAT32///////////////////////////////
  unsigned long BPB_FATSz32;
  unsigned long RootStartCluster;
  unsigned long TotCluster;
  unsigned char FAT;     //FAT16=0,FAT32=1;	
} SYS_INFO_BLOCK;
//*************************************************************
//*************************************************************
typedef struct _FILE_INFO{
  unsigned char bFileOpen;
  unsigned long StartCluster;    //unsigned int StartCluster;
  unsigned long LengthInByte;  
  unsigned long ClusterPointer;  //unsigned int ClusterPointer;
  unsigned long SectorPointer;
  unsigned int  OffsetofSector;
  unsigned char SectorofCluster;
  unsigned long pointer;
  unsigned long FatSectorPointer; //unsigned int	FatSectorPointer;
} FILE_INFO;

//*************************************************************
//*************************************************************
typedef struct _DIR_INFO{
	unsigned char name[8];
	unsigned char extension[3];
	unsigned char attribute;
	unsigned char Reserved[10];
	unsigned int  lastUpdateDate;
	unsigned int  lastUpdateTime;
	unsigned int  startCluster;
	unsigned long length;
} DIR_INFO;
//*************************************************************
//*************************************************************
typedef struct ShowFileName_D{
  unsigned char LongName[256];	//long file name,end by 00 00
  unsigned char item[32];	//short file name & dir
} ShowFileName_Def;