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SPI3 and SD Card

Derek Hodge

Hi Does anybody have a working example of an STM32F407VG reading and or writing an SD card using SPI3.

I have tried everything but always fails on mount with fsMediaError am at my wits end, i have even tried to follow example http://www.keil.com/appnotes/files/apnt_273.pdf and still not working.

Parents
  • 0 in reply to Derek Hodge

    Blink Thread - This Flashes every Second

    /* USER CODE BEGIN 4 */
void Blink(void const *arg){

        while (1){
                osDelay(1000);
                HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_0);
                WriteFile();
        }
}

    It calls the writefile routine which should mount the card but fails.

    int32_t fs_mc_spi_control_ss (uint32_t drive_num, uint32_t ss){
        if (ss==0) {
                HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_SET);
                return 1;
        }
          else {
                        HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_RESET);
            return 0;
                }
}

void WriteFile()
{
        fsStatus st;
        if (finit("") == fsOK) {
        st=fmount("");
        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 fs_mc_spi_control_ss function is setting the CS pin, I have tried reversing polarity.
    Also tried to lengthen the delay on the thread.

    Thanks so much for your time.

Reply
  • 0 in reply to Derek Hodge

    Blink Thread - This Flashes every Second

    /* USER CODE BEGIN 4 */
void Blink(void const *arg){

        while (1){
                osDelay(1000);
                HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_0);
                WriteFile();
        }
}

    It calls the writefile routine which should mount the card but fails.

    int32_t fs_mc_spi_control_ss (uint32_t drive_num, uint32_t ss){
        if (ss==0) {
                HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_SET);
                return 1;
        }
          else {
                        HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_RESET);
            return 0;
                }
}

void WriteFile()
{
        fsStatus st;
        if (finit("") == fsOK) {
        st=fmount("");
        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 fs_mc_spi_control_ss function is setting the CS pin, I have tried reversing polarity.
    Also tried to lengthen the delay on the thread.

    Thanks so much for your time.

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