SD.rar_SD_sd card 51

#include"LPC214X.H" #include "PCF8833.h" #include"SD.H" #define TFE 0x01 #define TNF 0x02 #define RNE 0x04 #define RFF 0x08 #define BSY 0x10 #define SD_Disable() IO0SET |= 1 << 20 //SD Chip Select Pin is P0.7 #define SD_Enable() IO0CLR |= 1 << 20 INT8U CMD[]={0x40, 0x00, 0x00, 0x00, 0x00, 0x95}; INT8U CSD_buffer[16]; INT8U CID_buffer[16]; INT8U s[8]; INT8U SPI_RW(INT8U data) { SSPDR = data; while((SSPSR & 0x01) == 0); return(SSPDR); } void spi_init (void) { INT32U i; /* SSEL is GPIO, output set to high. */ IODIR0 |= 1<<20; IOSET0 = 1<<20; /* SCK1, MISO1, MOSI1 are SSP pins. */ PINSEL1 = (PINSEL1 & ~0x000003FC) | 0x000000A8; /* Enable SPI in Master Mode, CPOL=1, CPHA=1 (Clock low-active). */ SSPCR0 = 0x00C7; SSPCR1 = 0x0002; SSPCPSR = 0xFE; /* Send SPI Command with card not selected at 400 KBit. */ for (i = 0; i < 16; i++) { SPI_RW (0xFF); } /* Enable SSP auto select. */ } INT8U Write_Command_SD(INT8U *CMD) { INT8U i = 0, response = 1, retry = 0; SD_Disable(); SPI_RW(0xff); SD_Enable(); for(i = 0; i < 0x06; i++) { SPI_RW(*CMD++); } SPI_RW(0xff); do { response = SPI_RW(0xff); retry++; } while((response== 0xff) && (retry < 100)); return(response); } adr_dispose(unsigned long ADR,INT8U CMDn) { CMD[0]=(CMDn&0x3f)|0x40; CMD[1]=(ADR&0XFF000000)>>24; CMD[2]=(ADR&0X00FF0000)>>16; CMD[3]=(ADR&0X0000FF00)>>8; CMD[4]=(ADR&0X000000FF)>>24; CMD[5]=0XFF; } INT8U SD_write_sector(INT32U Number_Sector, INT8U* Buffer) { INT8U response,response_1,retry; INT16U i; //Command 24 is a writing blocks command for SD/SD-Card. INT8U CMD[] = {0x58, 0x00, 0x00, 0x00, 0x00, 0xFF}; INT8U CMD_SET_BLOCKLEN[]={0x50,0x00,0x00,0x02,0x00,0xFF}; retry = 0; do { //Retry 100 times to send command. response = Write_Command_SD(CMD_SET_BLOCKLEN); if(++retry >= 100) return(1); //block read Error! } while(response != 0); SPI_RW(0XFF); Number_Sector <<= 9; //addr = addr * 512 CMD[1] = ((Number_Sector & 0xFF000000) >> 24 ); CMD[2] = ((Number_Sector & 0x00FF0000) >> 16 ); CMD[3] = ((Number_Sector & 0x0000FF00) >> 8 ); CMD[4] = ((Number_Sector & 0x000000FF) >> 0) ; //Send Command CMD24 to SD/SD-Card (Write 1 Block/512 Bytes) retry = 0; do { //Retry 100 times to send command. response = Write_Command_SD(CMD); if(++retry >= 100) { return(1); //send commamd Error! } } while(response != 0); // for(i = 0; i < 20; i++) SPI_RW(0xff); //Send Start Byte to SD/SD-Card SPI_RW(0xfe); //Now send real data Bolck (512Bytes) to SD/SD-Card for(i = 0; i < 512; i++) SPI_RW(* Buffer++); //send 512 bytes to Card //CRC-Byte SPI_RW(0xFF); //Dummy CRC SPI_RW(0xFF); //CRC Code // retry=0; do { response=SPI_RW(0xFF);//Read Response } while(response==0xff); do { response_1=SPI_RW(0xFF); } while(response_1!=0xFF); SD_Disable(); SPI_RW(0xff); if ((response&0x1f)!=0x05) return(1); return(0); } INT8U SD_Read_Block(INT8U *CMD, INT8U *Buffer, INT16U Bytes) { INT16U i; INT8U retry,response; INT16U Block_Len=0; INT8U CMD_SET_BLOCKLEN[]={0x50,0x00,0x00,0x00,0x00,0xFF}; if(Bytes != Block_Len) { CMD_SET_BLOCKLEN[3] = (INT8U)((Bytes & 0x0000FF00) >> 8 ); CMD_SET_BLOCKLEN[4] = (INT8U)((Bytes & 0x000000FF) >> 0 ); retry = 0; do { //Retry 100 times to send command. response = Write_Command_SD(CMD_SET_BLOCKLEN); if(++retry >= 100) return(1); //block read Error! } while(response != 0); Block_Len = Bytes; } //Send reads a block Command CMD to SD/SD-Card retry = 0; do { response = Write_Command_SD(CMD); if(++retry >= 100) return(1); //block read Error! } while(response != 0); //Read Start Byte form SD/SD-Card (FEh/Start Byte) // while(SPI_RW(0xff) != 0xfe) ; retry=0; for(i=0;i<1000;i++) { response=SPI_RW(0xff); retry++; if(response==0xfe) i=1000; if(retry==1000) return(1); } //Write blocks(normal 512Bytes) to SD/SD-Card for(i = 0; i < Bytes; i++) *Buffer++ = SPI_RW(0xff); //CRC-Byte SPI_RW(0xff);//CRC - Byte SPI_RW(0xff);//CRC - Byte SD_Disable(); return(0); } SD_INIT() { INT8U retry, response; INT16U i; for(i=0;i<250;i++) __asm { NOP } for(i = 0; i < 0x0f; i++) { SPI_RW(0xff); } //Send Command CMD0 to SD/SD Card retry = 0; do { //retry 200 times to send CMD0 command response = Write_Command_SD(CMD); //CMD0 响应为01 retry++; } while((response != 1) && (retry < 200)); retry=0; do { CMD[0]=0x77; CMD[5]=0x55; Write_Command_SD(CMD); //CMD55 响应为01 CMD[0]=0X69; response=Write_Command_SD(CMD); //ACMD41 响应为00 retry++; } while((response!=0)&&(retry<200)) ; if(response==0) { PutString(20,20,"SD_INIT OK",0xf800,0xffff); } else { if(response==1) PutString(20,20,"SD_INIT WRONG",0xf800,0xffff); else PutString(20,20,"SD_INIT FAIL",0xf800,0xffff); } return(response); } READ_CSD() { INT8U retry, response; INT8U CMD[] = {0x49,0x00,0x00,0x00,0x00,0xFF}; retry=0; do { response=SD_Read_Block(CMD,CSD_buffer,16); retry++; } while((response!=0x00)&&(retry<20)) ; if(response==0) { PutString(20,40,"READ_CSD OK",0xf800,0xffff); } else { if(response==1) PutString(20,40,"READ_CSD WRONG",0xf800,0xffff); else PutString(20,40,"READ_CSD FAIL",0xf800,0xffff); } return(response); } SD_WRITE(INT8U* Buffer,INT32U Number_Sector) { INT8U retry, response; retry=0; do { response=SD_write_sector(Number_Sector,Buffer); retry++; } while((response!=0x00)&&(retry<20)) ; if(response==0) { PutString(20,60,"SD_WRITE OK",0xf800,0xffff); } else { if(response==1) PutString(20,60,"SD_WRITE WRONG",0xf800,0xffff); else { PutString(20,60,"SD_WRITE fail",0xf800,0xffff); } } return(response); } SD_READ(INT8U *Buffer, INT16U Bytes,INT16U Number_Sector) { INT8U response,retry; INT8U CMD[]={0X51,0X00,0X00,0X00,0X00,0XFF}; // Number_Sector=Number_Sector*Bytes; CMD[1] = ((Number_Sector & 0xFF000000) >> 24 ); CMD[2] = ((Number_Sector & 0x00FF0000) >> 16 ); CMD[3] = ((Number_Sector & 0x0000FF00) >> 8 ); CMD[4] = ((Number_Sector & 0x000000FF) >> 0) ; retry=0; do { response=SD_Read_Block(CMD,Buffer,Bytes); retry++; } while((response!=0)&&(retry<100)); /* if(response==0) { PutString(20,80,"SD_READ OK",0xf800,0xffff); PutString(0,96,Buffer,0xf800,0xffff); } else { if(response==1) PutString(20,80,"SD_READ WRONG",0xf800,0xffff); else PutString(20,80,"SD_READ fail",0xf800,0xffff); } */ return(response); } BOOT_READ(INT8U *Buffer, INT16U Bytes,INT16U Number_Sector) { INT8U response,retry; INT8U CMD[]={0X51,0X00,0X00,0X00,0X00,0XFF}; Number_Sector=Number_Sector<<9; CMD[1] = ((Number_Sector & 0xFF000000) >> 24 ); CMD[2] = ((Number_Sector & 0x00FF0000) >> 16 ); CMD[3] = ((Number_Sector & 0x0000FF00) >> 8 ); CMD[4] = ((Number_Sector & 0x000000FF) >> 0) ;