sd.i

51环境下的FAT及FAT32文件系统源码

#line 1 "sd.c" /0
 
 
 
 
  
#line 1 "common.h" /0
  
#line 1 "C:\KEIL\C51\INC\REG51.H" /0






 
 
 
 
 
 
 sfr P0   = 0x80;
 sfr P1   = 0x90;
 sfr P2   = 0xA0;
 sfr P3   = 0xB0;
 sfr PSW  = 0xD0;
 sfr ACC  = 0xE0;
 sfr B    = 0xF0;
 sfr SP   = 0x81;
 sfr DPL  = 0x82;
 sfr DPH  = 0x83;
 sfr PCON = 0x87;
 sfr TCON = 0x88;
 sfr TMOD = 0x89;
 sfr TL0  = 0x8A;
 sfr TL1  = 0x8B;
 sfr TH0  = 0x8C;
 sfr TH1  = 0x8D;
 sfr IE   = 0xA8;
 sfr IP   = 0xB8;
 sfr SCON = 0x98;
 sfr SBUF = 0x99;
 
 
 
 
 sbit CY   = 0xD7;
 sbit AC   = 0xD6;
 sbit F0   = 0xD5;
 sbit RS1  = 0xD4;
 sbit RS0  = 0xD3;
 sbit OV   = 0xD2;
 sbit P    = 0xD0;
 
 
 sbit TF1  = 0x8F;
 sbit TR1  = 0x8E;
 sbit TF0  = 0x8D;
 sbit TR0  = 0x8C;
 sbit IE1  = 0x8B;
 sbit IT1  = 0x8A;
 sbit IE0  = 0x89;
 sbit IT0  = 0x88;
 
 
 sbit EA   = 0xAF;
 sbit ES   = 0xAC;
 sbit ET1  = 0xAB;
 sbit EX1  = 0xAA;
 sbit ET0  = 0xA9;
 sbit EX0  = 0xA8;
 
 
 sbit PS   = 0xBC;
 sbit PT1  = 0xBB;
 sbit PX1  = 0xBA;
 sbit PT0  = 0xB9;
 sbit PX0  = 0xB8;
 
 
 sbit RD   = 0xB7;
 sbit WR   = 0xB6;
 sbit T1   = 0xB5;
 sbit T0   = 0xB4;
 sbit INT1 = 0xB3;
 sbit INT0 = 0xB2;
 sbit TXD  = 0xB1;
 sbit RXD  = 0xB0;
 
 
 sbit SM0  = 0x9F;
 sbit SM1  = 0x9E;
 sbit SM2  = 0x9D;
 sbit REN  = 0x9C;
 sbit TB8  = 0x9B;
 sbit RB8  = 0x9A;
 sbit TI   = 0x99;
 sbit RI   = 0x98;
 
 
#line 1 "common.h" /0
 
  
#line 1 "C:\KEIL\C51\INC\ABSACC.H" /0






 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
#line 24 "C:\KEIL\C51\INC\ABSACC.H" /1
  
  
  
  
 
#line 29 "C:\KEIL\C51\INC\ABSACC.H" /0
 
 
 
 
 
 
 
#line 2 "common.h" /0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 typedef unsigned char       UINT8;
 typedef unsigned short      UINT16;
 typedef unsigned long       UINT32;
 
 typedef union {
 struct 
 {
 UINT8    Type;
 UINT8    Index;
 } Descriptor;
 
 struct 
 {
 UINT8 tx0;   
 UINT8 tx1;   
 UINT8 endp;   
 UINT8 c0;    
 } chars;
 
 struct 
 {
 UINT8 c3;   
 UINT8 c2;   
 UINT8 c1;   
 UINT8 c0;    
 } chars0;
 
 struct
 {
 UINT16 i1;     
 UINT16 i0;     
 } ints;
 
 UINT32 u0;
 
 } FLEXI_INT32;
 
 typedef union  {
 struct 
 {
 UINT8 c1;    
 UINT8 c0;    
 } chars;
 
 UINT16 i0;
 } FLEXI_INT16, *pFLEXI_INT16;
 
 typedef struct _XXG_FLAGS
 {
 unsigned char bTimer        :1;
 unsigned char bIN_ISR		:1;
 unsigned char bCOM_ERR		:1;
 unsigned char bTimeout		:1;
 unsigned char bData1		:1;
 unsigned char bUartInDone	:1;
 unsigned char bMassDevice	:1;
 unsigned char bToggle       :1;
 
 unsigned char SLAVE_IS_ATTACHED	:1;
 unsigned char SLAVE_REMOVED	:1;
 unsigned char SLAVE_FOUND	:1;	 
 unsigned char SLAVE_ENUMERATED	:1;	 
 unsigned char SLAVE_ONLINE	:1;
 unsigned char SLAVE_STALLED     :1;
 unsigned char TIMEOUT_ERR	:1; 	 
 unsigned char DATA_STOP		:1;	 
 } XXGFLAGS;
 
 typedef struct
 {
 unsigned int sector;
 unsigned char offset;
 } DIR_IDX, *pDIR_IDX;
 



 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 sfr P4 = 0xA1;
 
 sfr P0_DDR = 0xA2;
 sfr P1_DDR = 0xA3;
 sfr P2_DDR = 0xA4;
 sfr P3_DDR = 0xA5;
 sfr P4_DDR = 0xA6;
 
 sfr P_PU = 0xA7;
 sfr P_PD = 0xA9;
 
 sfr WDT = 0xAA;
 
 sfr SPI_DATA= 0x91;
 sfr SPI_CTL0= 0x92;
 sfr SPI_CTL1= 0x93;
 sfr SPI_STA0= 0x94;
 
 sfr SD_CTL0= 0x95;
 sfr SD_STA0= 0x96;
 sfr SD_STA1= 0x97;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
#line 205 "common.h" /1
  
  
 
#line 208 "common.h" /0
 
 
 
 
 
 unsigned short WordSwap(unsigned short input);
 void DelayMs(unsigned int nFactor);
 void DelayUs(unsigned char nFactor);
 unsigned long SwapINT32(unsigned long dData);
 unsigned char SendUart(unsigned char *pUsrBuf, unsigned int num);
 
 
 
#line 5 "sd.c" /0
 
  
#line 1 "sd.h" /0
 
 
 
 
 
 
 
 
 
 
 
 typedef struct _CSD_BLOCK
 {
 unsigned char CSD_Struct:2;
 unsigned char CSD_StructResv:6;
 unsigned char CSD_RdAcsTime;
 unsigned char CSD_RdAcsCycl;
 unsigned char CSD_XferSpeed;
 unsigned int  CSD_CCC:12;
 unsigned int  CSD_RdBlkLen:4;
 unsigned int  CSD_RdBlkPartial:1;
 unsigned int  CSD_WrBlkMisAlign:1;
 unsigned int  CSD_RdBlkMisAlign:1;
 unsigned int  CSD_DSRImp:1;
 unsigned int  CSD_DevResv:2;
 unsigned int  CSD_DevSize:12;
 unsigned int  CSD_MaxRdCurVmin:3;
 unsigned int  CSD_MaxRdCurVmax:3;
 unsigned int  CSD_MaxWrCurVmin:3;
 unsigned int  CSD_MaxWrCurVmax:3;
 unsigned int  CSD_DevSizeMult:3;
 unsigned int  CSD_ErsSingBlk:1;
 unsigned int  CSD_ErsSectSize:7;
 unsigned int  CSD_WrProtGrpSize:7;
 unsigned char CSD_WrFmtGrpEn:1;
 unsigned char CSD_MMCResv:2;
 unsigned char CSD_WrSpeedFactor:3;
 unsigned char CSD_MaxWrLen:4;
 unsigned char CSD_PartBlkWr:1;
 unsigned char CSD_FileResv:5;
 unsigned char CSD_FileFmtGrp:1;
 unsigned char CSD_CopyFlag:1;
 unsigned char CSD_PermWrProt:1;
 unsigned char CSD_TempWrProt:1;
 unsigned char CSD_FileFmt:2;
 unsigned char CSD_Resv:2;
 unsigned char CSD_CRC:7;
 unsigned char CSD_EOB:1;
 } CSD_BLOCK, *pCSD_BLOCK;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 unsigned char GetDevInfo(void);
 
 unsigned char SDCommand(unsigned char command, unsigned char *pAddr);
 
 unsigned char SDReadSector(unsigned long sector);
 
 unsigned char SDReadFat(unsigned long sector);
 
 unsigned char SDReadRdir(unsigned long sector);
 
 unsigned char SDWriteSector(unsigned long sector, unsigned char *pUsrBuf);
 
 unsigned char SDIdentify(void);
 
 unsigned char SDResp(unsigned char respLen);
 
 unsigned char SDMp3Read(unsigned long sector);
 
 unsigned char UartWaitCmd();
 
 
#line 6 "sd.c" /0
 
  
#line 1 "fat.h" /0
 unsigned long FirstSectorofCluster(unsigned int n);
 unsigned int ThisFatEntOffset(unsigned int clusterNum);
 unsigned int GetNextClusterNum(unsigned int clusterNum);
 unsigned int ThisFatSecNum(unsigned int clusterNum);
#line 7 "sd.c" /0
 
  
#line 1 "rbccmd.h" /0


 
 
 
 
 
 
 
 
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 typedef struct _READ_10 {
 UINT8 OperationCode;
 UINT8 Reserved1;
 UINT8 LBA_3;
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 UINT8 Reserved2;
 UINT8 XferLen_1;
 UINT8 XferLen_0;
 UINT8 Reserved3[3];
 } READ_10, *pREAD_10;
 
 typedef struct _WRITE_10 {
 UINT8 OperationCode;
 UINT8 Reserved1;
 UINT8 LBA_3;
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 UINT8 Reserved2;
 UINT8 XferLen_1;
 UINT8 XferLen_0;
 UINT8 Reserved3[3];
 } WRITE_10, *pWRITE_10;
 
 typedef struct _MODE_SENSE_10 {
 UINT8 OperationCode;
 UINT8 Reserved1;
 UINT8 PageCode : 6;
 UINT8 Pc : 2;
 UINT8 Reserved2[4];
 UINT8 ParameterListLengthMsb;
 UINT8 ParameterListLengthLsb;
 UINT8 Reserved3[3];
 } MODE_SENSE_10, *pMODE_SENSE_10;
 
 typedef struct _MODE_SELECT_10 {
 UINT8 OperationCode;
 UINT8 Reserved1 : 4;
 UINT8 PFBit : 1;
 UINT8 Reserved2 : 3;
 UINT8 Reserved3[5];
 UINT8 ParameterListLengthMsb;
 UINT8 ParameterListLengthLsb;
 UINT8 Reserved4[3];
 } MODE_SELECT_10, *pMODE_SELECT_10;






 
 


 
 typedef struct _GENERIC_CDB {
 UINT8 OperationCode;
 UINT8 Reserved[15];
 } GENERIC_CDB,*pGENERIC_CDB;
 
 typedef struct _GENERIC_RBC {
 UINT8 OperationCode;
 UINT8 Reserved[8];
 UINT8 Control;
 } GENERIC_RBC,*pGENERIC_RBC;
 


 
 typedef struct _FORMAT_RBC {
 UINT8 OperationCode;	 
 UINT8 VendorSpecific;
 UINT8 Increment : 1;
 UINT8 PercentorTime : 1;
 UINT8 Progress : 1;
 UINT8 Immediate : 1;
 UINT8 VendorSpecific1 : 4;
 UINT8 Reserved2[2];
 UINT8 Control;
 } FORMAT_RBC, *pFORMAT_RBC;
 
 


 
 typedef struct _READ_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 Reserved;
 
 
 UINT16 XferLength;
 UINT8 Control;
 
 } READ_RBC, *pREAD_RBC;
 
 


 
 typedef struct _READ_CAPACITY_DATA {
 
 UINT8 LBA_3;
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 
 UINT8 BlockLen_3;
 UINT8 BlockLen_2;
 UINT8 BlockLen_1;
 UINT8 BlockLen_0;
 } READ_CAPACITY_DATA, *pREAD_CAPACITY_DATA;
 
 typedef struct _READ_LONG_CMD{
 UINT8 OperationCode;
 UINT8 LogicalUnitNum	:3;
 UINT8 RES_1		:5;
 UINT8 RES_2;
 UINT8 RES_3;
 UINT8 RES_4;
 UINT8 RES_5;
 UINT8 RES_6;
 UINT16 AllocationLen;
 UINT8 RES_7;
 UINT8 RES_8;
 UINT8 RES_9;
 }READ_LONG_CMD, *pREAD_LONG_CMD;
 
 typedef struct _READ_LONG {
 
 UINT8 RES_1;
 UINT8 RES_2;
 UINT8 RES_3;
 UINT8 CAP_LIST_LEN;
 
 UINT8 LBA_3;
 UINT8 LBA_2;
 UINT8 LBA_1;
 UINT8 LBA_0;
 
 UINT8 Descripter;
 UINT8 BlockLen_2;
 UINT8 BlockLen_1;
 UINT8 BlockLen_0;
 } READ_LONG, *pREAD_LONG;


 
 typedef struct _READ_CAPACITY_RBC {
 UINT8                OperationCode;	 
 union  {
 FLEXI_INT32			l0[2];
 UINT32               l[2];
 READ_CAPACITY_DATA  CapData;        
 } tmpVar;
 
 UINT8                Control;
 } READ_CAPACITY_RBC, *pREAD_CAPACITY_RBC;
 
 typedef struct _READ_CAPACITY_RSP {
 UINT32 LastLBA;
 UINT32 BlockSize;
 
 } READ_CAPACITY_RSP, *pREAD_CAPACITY_RSP;


 
 typedef struct _START_STOP_RBC {
 UINT8 OperationCode;     
 UINT8 Immediate: 1;
 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;