I am having a weird case where when I give a semaphore the calling task does not yield. Test Case * I have two task A, B. * Task A is the highest prioirty task, Task B is lower priority than A. * Task A is pending on semaphore “X”. * Task B gives semaphore “X”. * I have preemption enabled Given the test case I expect Task B to yield to Task A. As soon as semaphore “X” is given. But this doesn’t seem to be happening. Should I add task taskYIELD() asfter the semaphore is given? Is there anyway to check if the giving the semphore caused the task to yeild?

I’m not sure why you are observing that behaviour and suggest stepping into the semaphore ‘give’ function (which will map to a queue function) to see why. It should not be necessary to add in a taskYIELD().

Additionally – In my answer of a few moments ago I am assuming this is not being called from a critical section or with the scheduler suspended.

I have solved it, it was interrupt related had nothing to do with the RTOS. Thanks