ESP32 Forum

Good morning,

I am working with an Esp32S3 for a project.
I am using the example code from sdmmc card in order to initialise an external SDCard in 4 pins mode.

When I am starting the program, I can see that the SDCard is initialized correctly, but it is formated each time !!!!

It seams that the problem disappears when I disable the SPIRAM initialisation at startup (In sdkconfig).
However, I would like to use the 2Mo SPIRAM available with the chip in my project.

Do you know what can be the problem please ?
Do you have any ideas ? Is there a link between the SPIRAM and the pins that I use or with the driver or ???

I am using the following pins with the SD Card :

#define CONFIG_EXAMPLE_PIN_CMD 48
#define CONFIG_EXAMPLE_PIN_CLK 45
#define CONFIG_EXAMPLE_PIN_D0 47
#define CONFIG_EXAMPLE_PIN_D1 21
#define CONFIG_EXAMPLE_PIN_D2 14
#define CONFIG_EXAMPLE_PIN_D3 13

and here is my code :

// Options for mounting the filesystem.
// If format_if_mount_failed is set to true, SD card will be partitioned and
// formatted in case when mounting fails.
esp_vfs_fat_sdmmc_mount_config_t mount_config = {
.format_if_mount_failed = true,
.max_files = 5,
.allocation_unit_size = 16 * 1024
};
sdmmc_card_t *card;
const char mount_point[] = MOUNT_POINT;
ESP_LOGI(TAG, "Initializing SD card");

// Use settings defined above to initialize SD card and mount FAT filesystem.
// Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions.
// Please check its source code and implement error recovery when developing
// production applications.

ESP_LOGI(TAG, "Using SDMMC peripheral");

// By default, SD card frequency is initialized to SDMMC_FREQ_DEFAULT (20MHz)
// For setting a specific frequency, use host.max_freq_khz (range 400kHz - 40MHz for SDMMC)
// Example: for fixed frequency of 10MHz, use host.max_freq_khz = 10000;
sdmmc_host_t host = SDMMC_HOST_DEFAULT();

/**
* On these chips, the SDMMC IO power is supplied externally
*/

// This initializes the slot without card detect (CD) and write protect (WP) signals.
// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();

// Set bus width to use:
slot_config.width = 4;

slot_config.clk = CONFIG_EXAMPLE_PIN_CLK;
slot_config.cmd = CONFIG_EXAMPLE_PIN_CMD;
slot_config.d0 = CONFIG_EXAMPLE_PIN_D0;
slot_config.d1 = CONFIG_EXAMPLE_PIN_D1;
slot_config.d2 = CONFIG_EXAMPLE_PIN_D2;
slot_config.d3 = CONFIG_EXAMPLE_PIN_D3;

// On chips where the GPIOs used for SD card can be configured, set them in
// the slot_config structure:

// Enable internal pullups on enabled pins. The internal pullups
// are insufficient however, please make sure 10k external pullups are
// connected on the bus. This is for debug / example purpose only.
slot_config.flags |= SDMMC_SLOT_FLAG_INTERNAL_PULLUP;

ESP_LOGI(TAG, "Mounting filesystem");
ret = esp_vfs_fat_sdmmc_mount(mount_point, &host, &slot_config, &mount_config, &card);

if (ret != ESP_OK) {
if (ret == ESP_FAIL) {
ESP_LOGE(TAG, "Failed to mount filesystem. "
"If you want the card to be formatted, set the EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option.");
} else {
ESP_LOGE(TAG, "Failed to initialize the card (%s). "
"Make sure SD card lines have pull-up resistors in place.", esp_err_to_name(ret));
}
return;
}
ESP_LOGI(TAG, "Filesystem mounted");

// Card has been initialized, print its properties
sdmmc_card_print_info(stdout, card);


Thank you for your help,
best regards,

Thomas TRUILHE

Hello.

Could you please tell me what IDF version are you using? Do you use some specific board or a custom one? How is the SD slot and PSRAM attached (GPIO pins)? Also could you please attach a log from the ESP (idf.py monitor) and your sdkconfig file? Thank you.