[SOLVED] Determine if function is called from Timer or interrupt

Hello.

I am using EmbOS CortexM GCC V5.02 on an ATSAM4E8C.

I have a function which I would like to take different code paths if called from a thread or from a timer or interrupt handler.

Basically my function is normally called from a task, but because it uses a MUTEX, this will fail with OS Error 161 if called from a timer handler or 160 if called from an ISR.

Is it possible to determine if my function is called from a timer or interrupt handler, so I can take a different code path, avoiding trying to acquire the mutex?

I would like to do something like the following:

if (OS_InTimerHandler() || OS_In_ISR()) {
  do_something_special();
} else {
  if (0==OS_MUTEX_LockTimed(&my_mutex, 100)) {
    error_mutex_timeout();
  } else {
    do_something_that_requires_mutex();
    OS_MUTEX_Unlock(&my_mutex);
  }
}

Note: The function also performs a number of other things before and after the mutex, so replacing all calls from within timer and interrupt handlers with a special version is not desirable.

Best regards
Mikkel Holm Olsen

Thank you Til.

I will look into the option of upgrading.

Best regards
Mikkel Holm Olsen