How to make FDS blocking

[RPDben]

Hi,

I am using an nRF52840 with SDK 17.0.2 and S140 7.2.0. I am running a scheduler based on app_scheduler.

I am trying to make my FDS implementation blocking as it is too complex to run a synchronously as there are quite a few calls to it that are causing havoc with the queues. I have set up a flag that I set to true before executing an FDS operation and then I want to wait for that flag to become false before continuing. I have tried the following:

Simple, empty while loop. This just locks the processor up and the command is never received

while( _fdsBusy ) ;

NRF Delay. This has a similar effect to above

while( _fdsBusy )
{
    nrf_delay_ms(1);
}

Using my scheduler to wait. While the event is received in the Event Handler, the code never carries on executing.

while( _fdsBusy )
{
   app_sched_execute( );
   nrf_pwr_mgmt_run( );
}

Is there any way to achieve what I want?

Thanks,

[Susheel Nuguru]

It is not easy to understand why you system broke when you used app_scheduler, there seemed to be some deadlock most likely due to the API usage of app_scheduler which might not be completely thread safe here.