Recommendation for event logging on nRF54L15

[garrettb]

Hi

I am using nRF54L15DK, with SDK v3.2.2.

I want to implement an event log, persistent in Flash.

Initially I thought of using FCB, but I am running in to issues with this.

Before I spend too much time trying to get this to work, is FCB recommended for the nRF54L15 for event logging?

I found this article which doesn't even mention FCB: here

Thanks

[Priyanka]

Hi Garrett,

For nRF54L series, the recommended file system is ZMS and it has a lot of features there.

https://docs.nordicsemi.com/bundle/ncs-3.1.0/page/zephyr/services/storage/zms/zms.html 

-Priyanka

[garrettb]

Hi Priyanka

The same project is already using ZMS to save/restore system settings etc.

However, each setting comprises of a key/value pair. 

For an event log, the idea is to add/append an event whenever it occurs. It seems to me that if ZMS was used for this, then each individual event would need its own key, and maybe another key/value pair to remember what the last ior next key/index was. This seems quite messy and probably inefficient.

In the article you linked to, it says "If your application is working in a FIFO mode (First-in First-out) then FCB is the best storage solution for this use case.".

So it still looks like, to me, that FCB might be the route to take for the log, and ZMS for the settings.

Regards

Garrett

[Priyanka]

Hi Garrett,

I just discussed internally regarding this and it should be fine to use the FCB for the nRF54L15.

-Priyanka