The GPIOTE Handler was triggered several times (SD14, 52840)

RE: The GPIOTE Handler was triggered several times (SD14, 52840)

mjt110 — Mon, 18 Mar 2019 15:39:30 GMT

That explains a lot，thank you so much！

RE: The GPIOTE Handler was triggered several times (SD14, 52840)

Einar Thorsrud — Mon, 18 Mar 2019 15:03:42 GMT

Yes, then this is caused by noise from the button, which is normal. You need to handle it in some way, either with a RC filter in HW or by debouncing in software, as suggested in my previous reply.

RE: The GPIOTE Handler was triggered several times (SD14, 52840)

mjt110 — Mon, 18 Mar 2019 14:53:50 GMT

Hi Einar, thanks for your reply! The input is connected to a button。Sometimes I did not push the button and the handler had already been triggered several times, is that normal?

Kind regards.

RE: The GPIOTE Handler was triggered several times (SD14, 52840)

Einar Thorsrud — Mon, 18 Mar 2019 12:50:46 GMT

Hi,

I assume the input here is connected to a button/switch or similar? If so, it will typically be noisy ("bounce"), and therefore you will get multiple events if you don't have a low pass filter on the input. If it is, the best is if you can fix it in HW. Alternatively you have to do debouncing in SW, for instance using the Button handling library.