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Read SD Card from PS Part

Former Member

Hi

I am trying to implement a System on Zedboard and I need to read files from SD card from PS part and use that data.

I searched a lot about this implementation and I came up with using AXI SPI Interface and use it for making this connection. But, I couldn't find anything about the rest of the implementation. Can anyone help me what to do or introduce any tutorial or link that could help me to connect SD Card to PS?

I'm in hurry, So, Please help me.

Thanks

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  • 0

    The SD Card on the Zedboard is directly connected to the PS SD 0 controller. You do not say if your application is 'bare metal' or using an operating system such as Linux.

     

    Assuming bare metal you can open the system.mss file in the SDK, once you have generated a BSP, and click on the 'Documentation' link to the right of the 'ps7_sd_0' in the Peripheral Drivers section for code examples.

     

    You could also generate an FSBL for you design and take a look at the code included for SD Card access there.

     

    -Gary

  • 0 in reply to Former Member

    Hi TroutChaser,

    Thanks for your help. I used SD0 and XPS generated NetList perfectly. Then, I tried to use FSBL and I made an FSBL application project, but when I use SDCard code, there is a problem with InitSD() function. Please look at this code:

    Status = InitSD("test.txt");
    if (Status != XST_SUCCESS) {
    tfsbl_printf(DEBUG_GENERAL,"SD_INIT_FAILr
    ");
    tOutputStatus(SD_INIT_FAIL);
    tFsblFallback();
    t}
    MoveImage = SDAccess;
    fsbl_printf(DEBUG_INFO,"SD Init Done r
    ");

    when this code ran, InitSD() return XST_FAILURE and it seems that it cannot initialize "test.txt" file. I copied "test.txt" file in SDCard ,already.

    The InitSD function is here:

    u32 InitSD(const char *filename)
    {

    tFRESULT rc;

    t/* Register volume work area, initialize device */
    trc = f_mount(0, &fatfs);
    tfsbl_printf(DEBUG_INFO,"SD: rc= %.8x
    r", rc);

    tif (rc != FR_OK) {
    ttreturn XST_FAILURE;
    t}

    tstrcpy_rom(buffer, filename);
    tboot_file = (char *)buffer;
    tFlashReadBaseAddress = XPAR_PS7_SD_0_S_AXI_BASEADDR;

    trc = f_open(&fil, boot_file, FA_READ);
    tif (rc) {
    ttfsbl_printf(DEBUG_GENERAL,"SD: Unable to open file %s: %d
    ", boot_file, rc);
    ttreturn XST_FAILURE;
    t}

    treturn XST_SUCCESS;

    }

    Can you help me with this error, Please?

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  • 0 in reply to Former Member

    Hi TroutChaser,

    Thanks for your help. I used SD0 and XPS generated NetList perfectly. Then, I tried to use FSBL and I made an FSBL application project, but when I use SDCard code, there is a problem with InitSD() function. Please look at this code:

    Status = InitSD("test.txt");
    if (Status != XST_SUCCESS) {
    tfsbl_printf(DEBUG_GENERAL,"SD_INIT_FAILr
    ");
    tOutputStatus(SD_INIT_FAIL);
    tFsblFallback();
    t}
    MoveImage = SDAccess;
    fsbl_printf(DEBUG_INFO,"SD Init Done r
    ");

    when this code ran, InitSD() return XST_FAILURE and it seems that it cannot initialize "test.txt" file. I copied "test.txt" file in SDCard ,already.

    The InitSD function is here:

    u32 InitSD(const char *filename)
    {

    tFRESULT rc;

    t/* Register volume work area, initialize device */
    trc = f_mount(0, &fatfs);
    tfsbl_printf(DEBUG_INFO,"SD: rc= %.8x
    r", rc);

    tif (rc != FR_OK) {
    ttreturn XST_FAILURE;
    t}

    tstrcpy_rom(buffer, filename);
    tboot_file = (char *)buffer;
    tFlashReadBaseAddress = XPAR_PS7_SD_0_S_AXI_BASEADDR;

    trc = f_open(&fil, boot_file, FA_READ);
    tif (rc) {
    ttfsbl_printf(DEBUG_GENERAL,"SD: Unable to open file %s: %d
    ", boot_file, rc);
    ttreturn XST_FAILURE;
    t}

    treturn XST_SUCCESS;

    }

    Can you help me with this error, Please?

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