NRF5340 How to use FAT FS with external flash

RE: NRF5340 How to use FAT FS with external flash

Håkon Alseth — Thu, 26 Sep 2024 08:00:38 GMT

Hi,

I would recommend that you create a new thread on this matter.

Be sure to include your configurations and overlay, as it seems that you're using a SD-card for storage, and not the external flash.

Kind regards,

Håkon

RE: NRF5340 How to use FAT FS with external flash

Haris — Thu, 26 Sep 2024 01:20:46 GMT

Hi,

I tried to build and flash the above code that Hakon provides, but when I do I get in putty when connecting to the board:

*** Booting nRF Connect SDK 3758bcbfa5cd ***
[00:00:00.757,232] <err> sd: Card error on CMD0
[00:00:00.757,232] <err> main: Storage init ERROR!
[00:00:00.762,939] <err> sd: Card error on CMD0
[00:00:00.762,939] <err> fs: fs mount error (-5)
Error mounting disk.
[00:00:00.762,969] <err> fs: fs not mounted (mp == 0x20000000)

To describe my layout, I am using a nrf5340 development kit with no sd card. I am trying to save some data on the mx25r6435f memory that exists on the nrf5340 dev kit. What do I need to modify? Please reply asap cause I have a deliverable on Monday 30/9/24.

Thank you

RE: NRF5340 How to use FAT FS with external flash

Håkon Alseth — Fri, 03 May 2024 13:52:44 GMT

Hi,

Here's a quick configuration example showing how to run with mcuboot/multi-image build for the nrf5340dk_nrf5340_cpuapp board:

devzone.nordicsemi.com/.../ncs_5F00_253_5F00_fs_5F00_sample_5F00_nrf5340_5F00_ext_5F00_flash.zip

To place the fatfs_storage in external flash, there's an "affiliation" tag in the pm_static.yml entry, as well as mcuboot/board configurations.

Kind regards,

Håkon