nRF52840 flash fstorage example not working

[miki_h]

Hi,

I'm using SDK 14.2.0 flash_fstorage_example_s140_pca10056 with SEGGER on the nRF52840 Preview DK.

As you can see the basic example not working, what I'm writing and what I'm reading is completely different.

Thanks, Miki

[RK]

Read the 'Writing to Flash' section in the manual which tells you what must be written to the UICR before you can program flash.

[Nguyen Hoan Hoang]

Which compiler are you using to compile the example ? If using GCC you need to make change to the flash_fstorage_example_gcc_nrf52.ld. All the sections that are > RAM have to be changed to > RAM AT > FLASH

[miki_h]

Solved it. Apparently I need to perform erase procedure to the flash (writing 1's). I wrongly assumed the write procedure contains the eraseing.