fat32.i

51环境下的FAT及FAT32文件系统源码

 UINT8 Reserved1 : 7;
 UINT8 Reserved2[2];
 union _START_STOP_FLAGS
 {
 struct
 {
 UINT8 Start          : 1;
 UINT8 LoadEject      : 1;
 UINT8 Reserved3      : 2;
 UINT8 PowerConditions: 4;
 } bits0;
 
 struct
 {
 UINT8 MediumState    : 2;
 UINT8 Reserved3      : 2;
 UINT8 PowerConditions: 4;
 } bits1;
 } Flags;
 UINT8 Control;
 } START_STOP_RBC, *pSTART_STOP_RBC;
 


 
 
 typedef struct _SYNCHRONIZE_CACHE_RBC {
 
 UINT8 OperationCode;     
 UINT8 Reserved[8];
 UINT8 Control;
 
 } SYNCHRONIZE_CACHE_RBC, *pSYNCHRONIZE_CACHE_RBC;
 


 
 typedef struct _WRITE_RBC {
 UINT8 OperationCode;	 
 
 
 
 UINT8 VendorSpecific;
 union{
 struct
 {
 UINT8 LBA_3;
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 } LBA_W8 ;
 
 UINT32 LBA_W32;
 }   LBA;
 UINT8 Reserved2;
 UINT16 XferLength;
 UINT8 Control;
 } WRITE_RBC, *pWRITE_RBC;
 


 
 typedef struct _VERIFY_RBC {
 UINT8 OperationCode;	 
 UINT8 Reserved0;
 UINT8 LBA_3;			 
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 UINT8 Reserved1;
 UINT8 VerifyLength_1;		 
 UINT8 VerifyLength_0;
 UINT8 Control;
 } VERIFY_RBC, *pVERIFY_RBC;
 
 




 
 


 
 typedef struct _INQUIRY_SPC {
 UINT8 OperationCode;	 
 UINT8 EnableVPD:1 ;
 UINT8 CmdSupportData:1 ;
 UINT8 Reserved0:6 ;
 UINT8 PageCode;
 UINT8 Reserved1;
 UINT8 AllocationLen;
 UINT8 Control;
 } INQUIRY_SPC, *pINQUIRY_SPC;
 














































 
 












 















 













 


 
 typedef struct _MODE_SELECT_SPC {
 UINT8 OperationCode;	 
 UINT8 SavePage : 1 ;
 UINT8 Reseved0 : 3 ;
 UINT8 PageFormat : 1 ;
 UINT8 Reserved1 : 3 ;
 UINT8 Reserved2[2];
 UINT8 ParameterLen;
 UINT8 Control;
 } MODE_SELECT_SPC, *pMODE_SELECT_SPC;
 
 typedef struct _MBR_BLOCK {
 UINT8 Res[454];
 unsigned long StartSector;
 unsigned long TotalSector;
 UINT8 Res1[50];
 } MBR_BLOCK,*pMBR_BLOCK;
 
 typedef struct _BPB_BLOCK {
 UINT8 BS_jmpBoo[3];
 UINT8 BS_OEMName[8];
 UINT16 BPB_BytesPerSec;
 UINT8 BPB_SecPerClus;
 UINT16 BPB_RsvdSecCnt;
 UINT8 BPB_NumFATs;
 UINT16 BPB_RootEntCnt;
 UINT16 BPB_TotSec16;
 UINT8 BPB_Media;
 UINT16 BPB_FATSz16;
 UINT16 BPB_SecPerTrk;
 UINT16 BPB_NumHeads;
 unsigned long BPB_HiddSec;
 unsigned long BPB_TotSec32;
 UINT8 BS_DrvNum;
 UINT8 BS_Reserved1;
 UINT8 BS_BootSig;
 UINT8 BS_VolID[4];
 UINT8 BS_VolLab[11];
 UINT8 BS_FilSysType[8];
 UINT8 ExecutableCode[448];
 UINT8 Marker[2];
 } BPB_BLOCK,*pBPB_BLOCK;
 
 typedef struct _BPB_BLOCK32 {
 UINT8 BS_jmpBoo[3];
 UINT8 BS_OEMName[8];
 UINT16 BPB_BytesPerSec;
 UINT8 BPB_SecPerClus;
 UINT16 BPB_RsvdSecCnt;
 UINT8 BPB_NumFATs;
 UINT16 BPB_RootEntCnt;
 UINT16 BPB_TotSec16;
 UINT8 BPB_Media;
 UINT16 BPB_FATSz16;
 UINT16 BPB_SecPerTrk;
 UINT16 BPB_NumHeads;
 unsigned long BPB_HiddSec;
 unsigned long BPB_TotSec32;
 UINT32 BPB_FATSz32;
 UINT16 BPB_ExtFlags;
 UINT16 BPB_FSVer;
 UINT32 BPB_RootClus;
 UINT16 BPB_FSInfo;
 UINT16 BPB_BkBootSec;
 UINT8  BPB_Reserved[12];
 UINT8  BS_DrvNum;
 UINT8  BS_Reserved1;
 UINT8  BS_BootSig;
 UINT32 BS_VolID;
 UINT8  BS_VolLab[11];
 UINT8  BS_FilSysType[8];
 
 } BPB_BLOCK32,*pBPB_BLOCK32;
 
 typedef struct _SYS_INFO_BLOCK{
 unsigned long StartSector;
 unsigned long TotalSector;
 
 
 UINT16 BPB_BytesPerSec;
 UINT8 BPB_SecPerClus;
 
 UINT8 BPB_NumFATs;
 UINT16 BPB_RootEntCnt;
 UINT16 BPB_TotSec16;
 UINT8 BPB_Media;
 UINT16 BPB_FATSz16;
 UINT32 BPB_FATSz32;
 UINT16 BPB_SecPerTrk;
 UINT16 BPB_NumHeads;
 unsigned long BPB_HiddSec;
 unsigned long BPB_TotSec32;
 UINT8 BS_DrvNum;
 
 UINT8 BS_BootSig;
 UINT8 BS_VolID[4];
 UINT8 BS_VolLab[11];
 UINT8 BS_FilSysType[8];
 
 
 
 unsigned long FatStartSector;
 unsigned long RootStartSector;
 
 unsigned long FirstDataSector;
 
 unsigned long TotCluster;
 unsigned char bFatType;
 } SYS_INFO_BLOCK,*pSYS_INFO_BLOCK;
 
 typedef struct _FILE_INFO{
 unsigned char bFileOpen;
 unsigned int StartCluster;    
 unsigned long LengthInByte;
 unsigned int ClusterPointer;  
 unsigned long SectorPointer;
 unsigned int OffsetofSector; 
 unsigned char SectorofCluster; 
 unsigned long pointer;	    
 
 } FILE_INFO, *pFILE_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, *pDIR_INFO;


 
 typedef struct _MODE_SENSE_SPC {
 UINT8 OperationCode;	     
 UINT8 Reseved0 : 3 ;
 UINT8 DisableBlockDescriptor : 1 ;
 UINT8 Reserved0 : 4 ;
 UINT8 PageCode:6 ;
 UINT8 PageControl : 2 ;
 UINT8 Reserved1;
 UINT8 ParameterLen;
 UINT8 Control;
 } MODE_SENSE_SPC, *pMODE_SENSE_SPC;
 







 


 


















 


 
 typedef struct _MEDIA_REMOVAL_SPC {
 UINT8 OperationCode;     
 UINT8 Reserved0[3];
 UINT8 Prevent;
 
 
 } MEDIA_REMOVAL_SPC, *pMEDIA_REMOVAL_SPC;
 


 
 typedef struct _REQUEST_SENSE_SPC {
 UINT8 OperationCode;     
 UINT8 Reserved[3];
 UINT8 AllocationLen;
 UINT8 Control;
 } REQUEST_SENSE_SPC, *pREQUEST_SENSE_SPC;


































 


 
 typedef struct _TEST_UNIT_SPC {
 UINT8 OperationCode;     
 UINT8 Reserved[4];
 UINT8 Control;
 } TEST_UNIT_SPC, *pTEST_UNIT_SPC;
 


 
 
 typedef struct _WRITE_BUFFER_SPC {
 UINT8 OperationCode;    
 UINT8 Mod:4 ;
 UINT8 Reserved0:4 ;
 UINT8 BufferID;
 UINT8 BufferOff_2;
 UINT8 BufferOff_1;
 UINT8 BufferOff_0;
 UINT8 ParameterLen_2;
 UINT8 ParameterLen_1;
 UINT8 ParameterLen_0;
 UINT8 Control;
 } WRITE_BUFFER_SPC, *pWRITE_BUFFER_SPC;	  
 
 typedef union _CDB_RBC {
 GENERIC_CDB             Cdb_Generic;
 
 
 GENERIC_RBC             RbcCdb_Generic;
 
 FORMAT_RBC              RbcCdb_Format;
 READ_RBC                RbcCdb_Read;
 READ_CAPACITY_RBC       RbcCdb_ReadCapacity;
 START_STOP_RBC          RbcCdb_OnOffUnit;
 SYNCHRONIZE_CACHE_RBC   RbcCdb_SyncCache;
 VERIFY_RBC              RbcCdb_Verify;
 WRITE_RBC               RbcCdb_Write;
 
 
 
 
 INQUIRY_SPC             SpcCdb_Inquiry;
 MODE_SELECT_SPC         SpcCdb_ModeSelect;
 MODE_SENSE_SPC          SpcCdb_ModeSense;
 MEDIA_REMOVAL_SPC       SpcCdb_Remove;
 REQUEST_SENSE_SPC       SpcCdb_RequestSense;
 TEST_UNIT_SPC           SpcCdb_TestUnit;
 WRITE_BUFFER_SPC        SpcCdb_WriteBuffer;
 
 
 READ_10         CmdRead10;
 WRITE_10        CmdWrite10;
 MODE_SELECT_10  CmdModeSel10;
 MODE_SENSE_10   CmdModeSen10;
 
 READ_LONG_CMD	SpcCdb_ReadLong;
 
 } CDB_RBC, *pCDB_RBC;
 
 
#line 1 "TPBULK.H" /0
 
 
 
 
 
 
 
 
 
 
 
 typedef struct _COMMAND_BLOCK_WRAPPER{
 UINT32   dCBW_Signature;
 UINT32   dCBW_Tag;
 UINT32   dCBW_DataXferLen;
 UINT8    bCBW_Flag;
 UINT8    bCBW_LUN;
 UINT8    bCBW_CDBLen;
 CDB_RBC cdbRBC;
 } CBW, *pCBW;
 
 typedef struct _COMMAND_STATUS_WRAPPER{
 UINT32   dCSW_Signature;
 UINT32   dCSW_Tag;
 UINT32   dCSW_DataResidue;
 UINT8    bCSW_Status;
 } CSW, *pCSW;
 
 typedef union _TPBULK_STRUC {
 CBW     TPBulk_CommandBlock;
 CSW     TPBulk_CommandStatus;
 
 }TPB_STRUC, *pTPB_STRUC;
 
 unsigned char EnumMassDev(void);
 unsigned char TPBulk_GetMaxLUN(void);
 unsigned char SPC_Inquiry(void);
 unsigned char SPC_READLONG(void);
 unsigned char SPC_RequestSense(void);
 unsigned char SPC_TestUnit(void);
 unsigned char SPC_LockMedia(void);
 unsigned char RBC_ReadCapacity(void);
 unsigned char RBC_ReadOneSec(unsigned long lba, unsigned char *pBuffer);
 unsigned char RBC_Write(unsigned long lba,unsigned char len,unsigned char *pBuffer);
 
 
#line 6 "Fat32.c" /0
 
  
#line 1 "HAL.H" /0
 
  
#line 1 "AT89X52.H" /0





 
 
 
 
 





 
 
 
 
 
 
 
 
 
 

 
 
 
 
#line 2 "HAL.H" /0
 
 
 sbit MCU_LED1=P1^0;
 sbit MCU_LED2=P1^1;
 sbit MCU_LED3=P1^2;
 sbit MCU_LED4=P1^3;
 
 sbit SWM1=P1^4;
 sbit SWM2=P1^5;
 sbit SWM3=P1^6;
 sbit SWM4=P1^7;
 
 
 sbit SL811_RST=P3^5;
 sbit SL811_CS=P3^4;
 
 
 
 
 
 unsigned char SL811Read(unsigned char a);
 void SL811Write(unsigned char a, unsigned char d);
 void SL811BufRead(unsigned char addr, unsigned char *s, unsigned char c);
 void SL811BufWrite(unsigned char addr, unsigned char *s, unsigned char c);
 unsigned short WordSwap(unsigned short input);
 void DelayMs(unsigned int nFactor);
 unsigned long SwapINT32(unsigned long dData);
 void ComSendByte(unsigned char c);
 
 unsigned int LSwapINT16(unsigned short dData1,unsigned short dData2);
 unsigned long LSwapINT32(unsigned long dData1,unsigned long dData2,unsigned long dData3,unsigned long dData4);
 unsigned long SwapINT32(unsigned long dData);
#line 7 "Fat32.c" /0
 
 
 
 
 extern SYS_INFO_BLOCK xdata DeviceInfo;
 extern UINT8 xdata DBUF[512];
 extern UINT8 xdata FATBUF[512];
 extern int FatSectorPointer;
 
 
 
 
#line 19 "Fat32.c" /1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 













































































































 
 
 
#line 177 "Fat32.c" /0