https://devzone.nordicsemi.com/f/nordic-q-a/100198/configuration-buttonHi all: When I initialize ten buttons, I get a stack error. And when I use the bsp.c to init the ten buttons, It seems not to enter the event handle, but I init four buttons, It can enter the event handle. What should I fix? Thanks.en-USTelligent Community 13Wed, 31 May 2023 05:42:13 GMThttps://devzone.nordicsemi.com/thread/428309?ContentTypeID=1Wed, 31 May 2023 05:42:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:66d850d8-8ff8-4c74-958e-c08e6a2e74beMark_Y<p>Oh, Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/428226?ContentTypeID=1Tue, 30 May 2023 14:34:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ac1053e8-ef14-45ad-971b-448c6ef1e6deNaeem Maroof<p>Hi Yang,</p> <p>Thank you for contacting DevZone at NordicSemi.</p> [quote user=""]When I initialize ten buttons, I get a stack error.[/quote] <p>How are you initializing these buttons?&nbsp;</p> <p>I think it is due to the hardware limitation.&nbsp;</p> <p>From the specifications, we see that a pin should only be assigned to one GPIOTE channel at a time. Otherwise, it will result into unpredictable behavior.</p> <p>Moreover, we can have only 8 different GPIOTE channels configured.&nbsp;</p> <p>You may look at <a href="https://devzone.nordicsemi.com/support-private/support/305832">this ticket</a> that explains this more.</p> <p>Also, bsp package and board files define 4 buttons:</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1685455929435v1.png" alt=" " /></p> <p>And therefore, the source code for initialization etc. uses loop to check and set up to four buttons.</p> <p>Regards,</p> <p>Naeem</p><div style="clear:both;"></div>