How to use FAT FS with internal flash memory mx25r6435f of nrf5340dk?

Hi,

I am trying to write a file with dummy data on my internal flash memory mx25r6435f of nrf5340. Then read back from the file and see it in putty. Here is the folder you need to unzip in your samples folder to see my code.


Haris_internal_memory.zip

However, I am getting error in putty

[00:00:00.901,031] <err> pca953x: tca9538@70 init failed: -5
*** Booting nRF Connect SDK 3758bcbfa5cd ***
[00:00:00.901,184] <err> main: Storage init ERROR!

Can you please assist on how to fix this?

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