NRF52833 issue with BLE and corrupted internal Flash with littleFS

[yoann InsightSip]

Hello,

I am struggle with an issue. When I enable the BLE on an nrf52833 and try to write on the internal flash with LittleFS, my flash get corrupted. I try without enable the BLE and LittfleFS worked without issue.  Also BLE is worked well.

Do you have any solutions for this problem ?

Thanks.

Best Regards,

Yoann Zamaron

[Sigurd Hellesvik]

Hi Yoann

Which version of the nRF Connect SDK are you using?

Are you able to provide code and configuration to replicate this behavior?

Regards,
Sigurd Hellesvik

[yoann InsightSip]

hello,

I am using the version 1.6.0.

I am using this example for littlefs : https://docs.zephyrproject.org/latest/samples/subsys/fs/littlefs/README.html

here is my prj file (not all) :

# BLE
CONFIG_BT=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DEVICE_NAME="ISP308x"
CONFIG_BT_DEVICE_APPEARANCE=833
CONFIG_BT_MAX_CONN=1
CONFIG_BT_MAX_PAIRED=1

# Enable bonding
CONFIG_BT_SETTINGS=y
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y

#module flash
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y

I cannot share the ble code.

Best Regards,

Yoann

[Sigurd Hellesvik]

Hi

The reason for this error is that NVS and littlefs both use "storage".

One solution for this is to use the Partition Manager to create littlefs_storage.

This is done by the following:

CONFIG_PM_SINGLE_IMAGE=y
CONFIG_PM_PARTITION_SIZE_LITTLEFS=0x6000

and

FS_LITTLEFS_DECLARE_DEFAULT_CONFIG(littlefs_storage);
static struct fs_mount_t lfs_storage_mnt = {
    .type = FS_LITTLEFS,
    .fs_data = &littlefs_storage,
    .storage_dev = (void *)FLASH_AREA_ID(littlefs_storage),
    .mnt_point = "/lfs",
};

Now you will not be able to compile due to an error in "nrf/include/flash_map_pm.h".
To remove this error, comment away the following lines in "nrf/include/flash_map_pm.h":

 28 //#if (CONFIG_SETTINGS_FCB || CONFIG_SETTINGS_NVS) && CONFIG_FILE_SYSTEM_LITTLEFS
 29 //#error "Not supported"
 30 //#endif

(See this similar case. for the flash_map_pm.h edit)

Does this fix your issue?

Regards,
Sigurd Hellesvik

[yoann InsightSip]

Hello

sorry for my last reply, now it's WORKING well thank you very much.

(I didn' change  storage by littlefs_storage)

Best Regards

Yoann