NRF51, SDK 12, FDS Issue(s)

RE: NRF51, SDK 12, FDS Issue(s)

Maarten — Mon, 11 Jun 2018 19:53:32 GMT

I think I have the first issue of the fstorage, how did you resolve this? I'm using SDK 12.3 with the nRF51.

When I run my code I initialize fstorage and do a test erase, write and read. This works.

Then I put the device in sleep (sd_app_evt_wait) after this I do not get a fs_sys_event_handler trigger.

Could you help me?

RE: NRF51, SDK 12, FDS Issue(s)

Tanasis! — Sun, 15 Oct 2017 16:53:09 GMT

I managed to figure this out. It was the result of two things:

The fs_sys_event_handler() of the fstorage was not called in the sys_evt_dispatch() (some legacy code of ours was interfering).
The RTTdubug print was too slow. We added delays to allow RTT to have the chance of sending the prints. (Even better is to use breakpoints in this case)

As to why the example was also showing the same behavior (which was super confusing to us), it has to do probably with the RTT prints. We didn't have the time to check it this out, but my guess is it works just fine.

RE: NRF51, SDK 12, FDS Issue(s)

Nguyen Hoan Hoang — Sat, 14 Oct 2017 23:05:31 GMT

My sequence is

fds_register();
fds_init();
wait_event_loop(); // wait for fds init complete
fds use
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main loop

RE: NRF51, SDK 12, FDS Issue(s)

Tanasis! — Sat, 14 Oct 2017 19:16:11 GMT

By default I use it as:

APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, NULL);
buttons_leds_init(&erase_bonds);
ble_stack_init();
peer_manager_init(erase_bonds);
fds use!
main loop: sd_app_evt_wait(). It "hangs" here waiting for events

I also removed peer manager and did:

fds_register();
fds_init();
fds use!
main loop: sd_app_evt_wait(). It "hangs" here waiting for events

No luck in either case of course... :( And no errors either...

RE: NRF51, SDK 12, FDS Issue(s)

Nguyen Hoan Hoang — Sat, 14 Oct 2017 18:30:42 GMT

If you use FDS before initializing peer_manager, you need to do that before you initializing peer. Otherwise it will get stuck.

RE: NRF51, SDK 12, FDS Issue(s)

Tanasis! — Sat, 14 Oct 2017 18:07:33 GMT

Yes, in the main loop, there is the sd_app_evt_wait(); basically

RE: NRF51, SDK 12, FDS Issue(s)

Nguyen Hoan Hoang — Sat, 14 Oct 2017 17:26:16 GMT

The evt callback only happens after a call to sd_app_evt_wait(); or app_sched_execute(); if scheduler is in use. So you need something like this to get the event.

g_bFdsInitialized = false;

while (g_bFdsInitialized == false)
{
     app_sched_execute();
}

g_bFdsInitialized needs to be set to true in the event handler