I am able to configure GPIO pin as input port and register a interrupt. In this case ISR is called back and things are good.
But I want GPIO pin to be output and register an interrupt. When I do this, ISR is not called.
I see that states of the pin are changing(using LED), but ISR is not called.
What I read from HRM is that interrupt functionality is completely decoupled from GPIO feature. So in this case it should be programmatically legal to register ISR for output pin and get a callback for ISR when the pin state changes ?