FDS Sample Code

RE: FDS Sample Code

Tanasis! — Sun, 15 Oct 2017 08:04:38 GMT

Do you have also an example for SDK 12.x? This one doesn't seem to work with SDK 12.x. Thanks!

RE: FDS Sample Code

Stefan Birnir Sverrisson — Wed, 26 Oct 2016 08:32:39 GMT

You can find simple fds example here

RE: FDS Sample Code

saiteja — Fri, 16 Sep 2016 15:22:42 GMT

hi, rk where i can get fds simple examples for nrf51.

RE: FDS Sample Code

alhay49 — Thu, 05 May 2016 19:06:53 GMT

Thank you for the notes. I worked out what the problem was. I was initalising the FDS module and then calling the write command without waiting for the event handler to return. I've now added a delay and it is working well. The sample code I had reviewed had the peer manager component that also initialises the FDS so by the time they did test writes this initialisation had already been completed and they didn't have a check to make sure that it was.

RE: FDS Sample Code

alhay49 — Thu, 05 May 2016 18:53:51 GMT

Yes, I had read through the initialising and had the pm_init in the main function. I solved the issue. The sample code initialised the peer manager and then called a test init later. This means the system initialises the fds module twice and the first time is early during the start up. In my code I had my test method calls right after the initialisation and didn't wait for the event handler to return that it had been initialised. I added a delay flag to wait for the response and now it works. Thanks for the help!

RE: FDS Sample Code

RichieJH — Thu, 05 May 2016 07:42:46 GMT

Ok, one other thing to check is you are initialising correctly, I see a comment in the SDK "In the Peer Manager, fds_init is part of the initialization function pm_init." Presumably you have already accounted for that?

RE: FDS Sample Code

RK — Thu, 05 May 2016 00:52:16 GMT

Of course FDS works without the peer manager and it works with the softdevice and the uart drivers and everything else, it's simply another wrapper around the flash writing event system, well actually fstorage is another wrapper around the flash writing event system and fds is just built on top of that.

Basically sounds like you're on the right path, so bang some debugging in there and see what's going on. Is your sys_evt_dispatch() getting called with flash storage events and do the events you're getting make sense, ie is the write actually happening, but you're just not getting the callback? Is the underlying fstorage subsystem getting initialized properly and your client properly registered to it?

Or post some code, it's impossible to debug observations. You're probably just missing one small thing, the FS and FDS work pretty well, much better than the old pstorage module.

RE: FDS Sample Code

alhay49 — Wed, 04 May 2016 23:47:21 GMT

I test call the methods for reading and writing after initializing the ble components (ble stack, gap params, services etc) but before calling the advertising start method. This is how it is done in the sample code. I am assuming that the radio isn't active until I start advertising.

RE: FDS Sample Code

RichieJH — Wed, 04 May 2016 23:14:37 GMT

The radio has higher priority and may prevent flash operation. Have you tried getting it to work with simple static data? If you are trying to trigger flash operation when the radio is working in relation to the BLE UART that could be problematic.