Unable to utilize the FAT file system on nRF7002 DK board.

[mouli2004]

Hi, 

I am trying to write a file to the FAT file system on nRF7002 board. 

Here is what I have tried:

in proj.conf:

ONFIG_FILE_SYSTEM=y

CONFIG_FLASH=y

CONFIG_FLASH_MAP=y

CONFIG_FAT_FILESYSTEM_ELM=y

CONFIG_FS_FATFS_LFN=y

CONFIG_FS_FATFS_LFN_MODE_STACK=y

CONFIG_NVS=y

CONFIG_DISK_DRIVER_FLASH=y

in main.c of the app core:

#include <zephyr/fs/fs.h>

static struct fs_mount_t fat_fs = {

    .type = FS_FATFS,

    .fs_data = NULL,

    .mnt_point = "/mnt/storage",  // Mount point for the filesystem

};

void mount_fatfs(void) {

    int rc = fs_mount(&fat_fs);

    if (rc < 0) {

        printk("Failed to mount FATFS (%d)\n", rc);

    } else {

        printk("FATFS mounted successfully!\n");

    }

}

Invoke mount_fats in main(). 

Here is the error I see:

<err> qspi_nor: JEDEC id [00 00 00] expect [c2 28 17]

<err> fs: fs mount error (-19)
Failed to mount FATFS (-19)

How can this be fixed?

[Vidar Berg]

Hello,

The devicetree for the nRF7002DK board assigns the QSPI to the nRF7002 for Wifi while the macronix flash is on the spi4 bus, but your log shows that the QSPI driver is being used to interface with the flash:

<err> qspi_nor: JEDEC id [00 00 00] expect [c2 28 17]

- nRF7002DK - External memory

- nRF7002DK - QSPI - Wifi

Please try with the sample project below and see if that works for you. It is based on the same project I posted here: 

 RE: Using the Mass example on my custom board, but first getting it running on the nRF52840dk QSPI flash  but is configured to run on the nRF7002DK.

peripheral_lbs_mass_storage_spi.zip

Best regards,

Vidar