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Unable to mount the sd card in lpc1768

Sanket Sharma

I am working on file system middleware component to interface the SD card with lpc1768.I double checked all the resource requirements and configuraton of all the components required.Still, fmount function returns the fsMediaError and is unable to amount the memory drive.I have no clue of the issue. Can anyone please help me out on this ?

Am using the code given below to initialize and mount the sd card.

void sd_init(void)
{fsStatus stat;
SystemInit();
        LPC_GPIO2->FIODIR=0XFFFFFFFF;
  printf ("Initializing and mounting enabled drives...\n\n");

  /* Initialize and mount drive "M0" */
  stat = finit ("M0:");
  if (stat == fsOK) {
    stat = fmount ("M0:");
      if (stat == fsOK) {
       LPC_GPIO2->FIOPIN=0xfffffff1;
                        printf ("Drive M0 ready!\n");
    }
    else if (stat == fsNoFileSystem) {
        /* Format the drive */
     LPC_GPIO2->FIOPIN=0xfffffff2;
                        printf ("Drive M0 not formatted!\n");

    }
    else if (stat==fsMmediaError){
      printf ("Drive M0 mount failed with error code %d\n", stat);
     LPC_GPIO2->FIOPIN=0xfffffff3;
                }
  }
  else {
    printf ("Drive M0 initialization failed!\n");
  }
 printf ("\nDone!\n");
                }

Parents
  • 0 in reply to Westonsupermare Pier

    Hi,
    I am having what may be a similar issue, just moved over to keil from microelecktronika compiler and have working application but now i am trying to get to grips with keil.

    SETUP: STM32F407VG, SD card connected to SPI3, CS connected to Port D Pin 3.

    Used STM32CubeMX and selected SPI3 as Port c, pins 10, 11, 12. Set PD3 as GPIO Output.
    Clock is 25MHZ xtal and PLL to 150MHZ

    RTX operating system, 1 Blinking task with an led connected to PB0 flashing every second.
    During this second i try and mount SD Card but it is failing with fsMediaError.

    Have checked the card and its file system is ok, tried multiple cards and same result.

    Also created function to set CS pin as shown

    int32_t fs_mc_spi_control_ss (uint32_t drive_num, uint32_t ss){
        if (ss==1) HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_SET);
          else HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_RESET);
        return ss;
}

    My writefile function is as below;

    void WriteFile()
{
        fsStatus st;
        if (finit("M0:") == fsOK) {
          st=fmount("M0:");
          if (st == fsOK) HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_1); ;
  }
        FILE *f=fopen("try.txt","a");
                if (f!=NULL) {
                        HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_2);
                        fprintf(f,"Test\n");
                        fclose(f);
                }
        }

    The purpose of the toggle pins is to see if it worked.

    I am not looking for someone to fix this but a pointer in the right direction would be really much appreciated.

Reply
  • 0 in reply to Westonsupermare Pier

    Hi,
    I am having what may be a similar issue, just moved over to keil from microelecktronika compiler and have working application but now i am trying to get to grips with keil.

    SETUP: STM32F407VG, SD card connected to SPI3, CS connected to Port D Pin 3.

    Used STM32CubeMX and selected SPI3 as Port c, pins 10, 11, 12. Set PD3 as GPIO Output.
    Clock is 25MHZ xtal and PLL to 150MHZ

    RTX operating system, 1 Blinking task with an led connected to PB0 flashing every second.
    During this second i try and mount SD Card but it is failing with fsMediaError.

    Have checked the card and its file system is ok, tried multiple cards and same result.

    Also created function to set CS pin as shown

    int32_t fs_mc_spi_control_ss (uint32_t drive_num, uint32_t ss){
        if (ss==1) HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_SET);
          else HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_RESET);
        return ss;
}

    My writefile function is as below;

    void WriteFile()
{
        fsStatus st;
        if (finit("M0:") == fsOK) {
          st=fmount("M0:");
          if (st == fsOK) HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_1); ;
  }
        FILE *f=fopen("try.txt","a");
                if (f!=NULL) {
                        HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_2);
                        fprintf(f,"Test\n");
                        fclose(f);
                }
        }

    The purpose of the toggle pins is to see if it worked.

    I am not looking for someone to fix this but a pointer in the right direction would be really much appreciated.

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