https://devzone.nordicsemi.com/f/nordic-q-a/102255/a-question-about-buttons-in-a-matrix-structureHello! I am implementing the input of the key of the matrix structure of the circuit diagram below. First of all, I tested whether the GPIO output (Row 1~4) and input (Column 1~5) are working normally. - When all High outputs areen-USTelligent Community 13Thu, 27 Jul 2023 07:08:42 GMThttps://devzone.nordicsemi.com/thread/438424?ContentTypeID=1Thu, 27 Jul 2023 07:08:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:78b80556-f837-46ef-ab11-c97c3c782d81Susheel Nuguru<p>Hi David,</p> [quote user=""]The question is whether it is the right choice to try to distinguish in the void gpiote_event_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action) function?[/quote] <p>There are many ways to implement this and you said that the way you make it work is tested and working normally. I am not sure of the power implications of it, but it seems to be a functional design.</p><div style="clear:both;"></div>