How to persistently save and load values in a mesh project?

RE: How to persistently save and load values in a mesh project?

Joakim Jakobsen — Fri, 29 Jan 2021 11:11:35 GMT

I can forward this internally. We always appreciate suggestions on how to improve.

Br,
Joakim

RE: How to persistently save and load values in a mesh project?

BlueMike — Thu, 28 Jan 2021 15:52:14 GMT

You know, it would be really useful if the docs would either explain or include a working example of how to setup flash manager, and how to read/write values. The information that's spread through the various posts here on devzone is pretty much outdated...

RE: How to persistently save and load values in a mesh project?

BlueMike — Thu, 28 Jan 2021 13:09:16 GMT

Thank you!

RE: How to persistently save and load values in a mesh project?

Joakim Jakobsen — Thu, 28 Jan 2021 13:02:38 GMT

My mistake:

You can find the flash manager in the latest version of the documentation here:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v5.0.0/md_doc_user_guide_modules_flash_manager.html

Manually:
nRF5 SDK for Mesh v.5.0.0 -> Bluetooth mesh stack user guide -> Modules -> Flash manager

Br,
Joakim

RE: How to persistently save and load values in a mesh project?

BlueMike — Thu, 28 Jan 2021 12:37:26 GMT

Hi Joakim,

Oddly enough I can't find Flash manager in neither the 4.2.0 nor the 5.0.0 documentation. Is this intended? (Mesh SDK 1.0.1 (the one you've linked to) seems to be a little outdated...)

So, yesterday I've decided for the FDS approach, which is documented, but, if followed the documentation, causes the mesh_stack_init() to throw an assertion in flash_manager_add(). In other words: It's just not working.
A day wasted for something as common as saving and loading a value.... It might not be apparent to you guys, but the mesh documentation is a real big mess: OTA mesh DFU through proxy connection just not possible, but nowhere mentioned. Same here with persistent storage... A lot of information spread all over the place, but to find the one that's actually relevant and working, you need to get lucky. It's... frustrating!

Anyway, I'll migrate over to flash manager. Do you have a step-by-step tutorial about how to load and save a value? One that just works? It would be very much appreciated.

Thank you.

RE: How to persistently save and load values in a mesh project?

Joakim Jakobsen — Thu, 28 Jan 2021 11:06:53 GMT

Hi.

Using the nRF5 SDK for Mesh I suggest using the Flash Manager to store data in Flash.

Br,
Joakim