FDS - pstorage - fstorage - which to use?

[Bryan H]

I am using NRF52DK and SDK 12.1. I am using BLE. I currently am not using Peer Manager but probably will be implementing that in the future (of sooner if that makes my question below easier).

I tried several different examples found in answers here to get FDS to work - all were for SDK11. I also used the code in the Infocenter for SDK12.1 under FDS usage and could not get it to do anything but write to memory. It initialized fine and wrote fine but I could not get it to read back from memory. I gave up and figured I would look for help here.

I have about 10-12 user changeable "settings" that I need to store when the user changes them and that can be recovered after a reboot or power failure.

What is the easiest way to save these settings when a user changes them and retrieve them after a reboot? Is it FDS, Pstorage, Fstorage????

I could not find an example of FDS in the SDK examples directory - did I miss something?

I could really use a good example for SDK12.1 that shows how to write to memory and read back from memory.

Any help would be appreciated! Thanks, Bryan

[Sigurd]

The pstorage module has been removed in SDK12, and its usage has been replaced by fstorage. fstorage is a much more modern and flexible solution. The usage of fstorage is described in the infocenter: Experimental: Flash Storage. The full API is described here.

I would recommend that you check out the Flash Data Storage module, which is built on fstorage. This module abstracts away the lower levels of fstorage and provides a simple flash file-system. You can find a example on how to use FDS in this Git repository: nRF52-FDS-Example. The example is built on SDK 11, but the use of the fds functions is compatible with SDK 12. The example shows you how to both write and read with the fds module.