cancel
Showing results for 
Search instead for 
Did you mean: 

STM32F103 FATFS with SDIO

electronic
Associate
Posted on July 20, 2017 at 17:37

Hello everyone,

I'm trying to make this code works :

/*♯♯-1- Link the micro SD disk I/O driver ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/

if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)

{

    /*♯♯-2- Register the file system object to the FatFs module ♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/

    if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) != FR_OK)

   {

       /* FatFs Initialization Error */

       Error_Handler();

    }

    else

    {

       /*♯♯-3- Create a FAT file system (format) on the logical drive ♯♯♯♯♯♯♯♯♯*/

       /* WARNING: Formatting the uSD card will delete all content on the device */

       if(f_mkfs((TCHAR const*)SDPath, 0, 0) != FR_OK)

       {

          /* FatFs Format Error */

          Error_Handler();

       }

    }

 }

The fm_mkfs function gets out at that line in the ff.c file of the FatFs library:

 if (disk_write(pdrv, tbl, b_vol, 1)) /* Write it to the VBR sector */

    return FR_DISK_ERR;

To be precise it gets out in the SD_WriteMultiBlocks (custom disk_write function) function :

SD_Error SD_WriteMultiBlocks(const uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)

{

   SD_Error errorstatus = SD_OK;

   TransferError = SD_OK;

   TransferEnd = 0;

   StopCondition = 1;

   SDIO->DCTRL = 0x0;

   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |    /*SDIO_IT_RXOVERR*/SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);

   SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));

   SDIO_DMACmd(ENABLE);

   if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

   {

      BlockSize = 512;

      WriteAddr /= 512;

   }

   /* Set Block Size for Card */

   SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;

   SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;

   SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

   SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

   SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

   SDIO_SendCommand(&SDIO_CmdInitStructure);

   errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

   if (SD_OK != errorstatus)

   {

      return(errorstatus);

   }

   ..... /* Other commands in the function...*/

   ......

}

It returns : SD_CMD_RSP_TIMEOUT.

I can't figure out why all the previous commands worked but this one (which also worked on previous calls).

Any clue will be appreciated.

Thank you.

Mathias

#fatfs-sdio #stm32f103
1 REPLY 1

Bumping to remove from the home page (No Answer Posts)

Writes might fail in ST's assorted models if code hasn't waited for prior read/write operations to have completed properly. Check IRQHandlers and callbacks

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..