S02-CH14 TF/SD卡/EMMC读写实验

#include <stdio.h>

#include "xparameters.h"

#include "xsdps.h"

#include "xil_printf.h"

#include "ff.h"

static FATFS SD_Dev; // File System instance

char *SD_Path = "0:/";  //  string pointer to the logical drive number

static char FileName[32] = "test.txt"; // name of the log

u8 WR_Buf[1024] __attribute__ ((aligned(32))); // Buffer should be word aligned (multiple of 4)

u8 RD_Buf[1024] __attribute__ ((aligned(32))); // Buffer should be word aligned (multiple of 4)

int SD_init()

{

FRESULT result;

//-----------------------mount dev-----------------------------------------------

result = f_mount(&SD_Dev,SD_Path, 0);

if (result != 0) {

return XST_FAILURE;

}

return XST_SUCCESS;

}

int SD_read(char *FileName,u8 *DestinationAddress,u32 ByteLength)

{

FIL file;

FRESULT result;

UINT BytesRd;

result = f_open(&file,FileName,FA_READ);

if(result)

{

return XST_FAILURE;

}

result = f_lseek(&file, 0);

if(result)

{

return XST_FAILURE;

}

result = f_read(&file, (void*)DestinationAddress,ByteLength,&BytesRd);

if(result)

{

return XST_FAILURE;

}

result = f_close(&file);

if(result)

{

return XST_FAILURE;

}

return XST_SUCCESS;

}

int SD_write(char *FileName,u8 *SourceAddress,u32 ByteLength)

{

FIL file;

FRESULT result;

UINT BytesWr;

result = f_open(&file,FileName,FA_CREATE_ALWAYS | FA_WRITE);

if(result)

{

return XST_FAILURE;

}

result = f_lseek(&file, 0);

if(result)

{

return XST_FAILURE;

}

result = f_write(&file,(void*) SourceAddress,ByteLength,&BytesWr);

if(result)

{

return XST_FAILURE;

}

result = f_close(&file);

if(result){

return XST_FAILURE;

}

return XST_SUCCESS;

}

int main()

{

int i;

FRESULT result;

u8 SD_ERROR=0;

u32 Buffer_size=1024;

SD_init();

for(i=0;i<Buffer_size;i++)

{

WR_Buf[i]=i;

}

//-----------------------write test data to file-----------------------------------

result=SD_write(FileName, WR_Buf, Buffer_size);

if (result!=0)

{

return XST_FAILURE;

}

xil_printf("SD CARD  written Successfully\r\n");

//-----------------------read test data ------------------------------------------

result=SD_read(FileName, RD_Buf, Buffer_size);

if (result!=0)

{

return XST_FAILURE;

}

xil_printf("SD CARD Data read Successfully\r\n");

//-----------------------check data-----------------------------------------------

for(i=0; i<Buffer_size;i++)

{

if(WR_Buf[i]!=RD_Buf[i])

{

SD_ERROR=1;

break;

}

}

if(SD_ERROR)

xil_printf("SD CARD  Data checked Error\r\n");

else

xil_printf("SD CARD Data checked Successfully\r\n");

    return 0;

}

#include <stdio.h>

#include "xparameters.h"

#include "xil_exception.h"

#include "xsdps.h"

#include "xil_printf.h"

static XSdPs   ps7_EMMC;

XSdPs_Config * EMMC_Config;

u8 WR_Buf[1024];

u8 RD_Buf[1024];

u8 Emmc_ExtCsd[1024];

int main()

{

u32 i;

s32 Status;

u32 Buffer_size=1024;

u8 SD_ERROR=0;

    EMMC_Config= XSdPs_LookupConfig(XPAR_PS7_SD_1_DEVICE_ID);

    Status = XSdPs_CfgInitialize(&ps7_EMMC, EMMC_Config, EMMC_Config->BaseAddress);

    if (Status != XST_SUCCESS)

    {

         print("EMMC Config failed !\n\r");

         return XST_FAILURE;

    }

    Status=XSdPs_MmcCardInitialize(&ps7_EMMC);

    if (Status != XST_SUCCESS)

    {

         print("EMMC Config failed !\n\r");

         return XST_FAILURE;

    }

    Status=XSdPs_Change_ClkFreq(&ps7_EMMC,50000000);

    Status=XSdPs_Select_Card(&ps7_EMMC);

    Status=XSdPs_SetBlkSize(&ps7_EMMC,XSDPS_BLK_SIZE_512_MASK);

    Status=XSdPs_Get_Mmc_ExtCsd(&ps7_EMMC,Emmc_ExtCsd);

    for(i=0;i<Buffer_size;i++)

    {

     WR_Buf[i]=i;

    }

    Status = XSdPs_WritePolled(&ps7_EMMC, 0x00, 2, WR_Buf);

    Status = XSdPs_ReadPolled(&ps7_EMMC, 0x00, 2, RD_Buf);

    //-----------------------check data-----------------------------------------------

    for(i=0; i<Buffer_size;i++)

     {

     if(WR_Buf[i]!=RD_Buf[i])

     {

     SD_ERROR=1;

     break;

     }

     }

     if(SD_ERROR)

     xil_printf("EMMC  Data checked Error\r\n");

     else

     xil_printf("EMMC  Data checked Successfully\r\n");

    return 0;

}