Uncertainty about portYIELD_FROM_ISR()

Kernel
1

Hi,

portYieldFromISR
portYieldFromISR1052×137 25.5 KB

If use STM’s MCU with ARM Cotex-M, Is it required to put this MACRO at the very end of ISR.

2

Arm Cortex-M ports use a bottom priority interrupt to trigger the scheduler, so there isn’t a requirement that the use of portYIELD_FROM_ISR be at the very end.

I do find that if I am doing things the recommended way, defining the wasWoken flag at the top of the ISR and using it on all the FromISR calls that might wake up a task, that putting it at the end is not an issue.

3

Thanks for replay so fast.