GPIOTE Toggle interrupt direction

[Brian S]

We have a GPIO configured in the GPIOTE to generate an interrupt on the LotoHi and HitoLo transitions (Toggle). Inside the interrupt handler we would like to perform a slightly different operation on the rising edge vs. the falling edge. Is there any way to find out what transition caused the interrupt?

The only solution we have come up with so far is to have the incoming signal drive two GPIO and have the HitoLo and LotoHi interrupts independent of each other with two GPIOTE channels.

Is there more information contained in the EVENTS_IN registers than is documented? i.e. is one of those bits tied to the transition that caused the interrupt?

Thanks in advance for your help.

[Kenneth]

Hi Brian,

I can't think of a better idea then using two GPIO & GPIOTE channels. If this is not high speed, I guess an option could be to use one GPIO & GPIOTE channel with event on Toggle and simply read the pin in the interrupt handler to decide operation.

Best regards,
Kenneth