https://devzone.nordicsemi.com/f/nordic-q-a/128916/flpr-gpio-interruptsHello, I have a pin on port 1 of the nrf54l15 that I am bitbanging for a custom tx/rx 2-wire protocol. I have already managed to implement the tx capability and I was hoping to use gpio interrupts on the rx signal to determine the start condition, anden-USTelligent Community 13Mon, 10 Aug 2026 18:25:56 GMThttps://devzone.nordicsemi.com/thread/570076?ContentTypeID=1Mon, 10 Aug 2026 18:25:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b009a03-74f0-4b0e-9ff3-fad113daedd4Robert de Brum<p>The pin in use is p1.05. When I am running, I know that the signal is toggling but I don&#39;t see any&nbsp;interrupts reaching my handler (in my _callback object).</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/570070?ContentTypeID=1Mon, 10 Aug 2026 13:58:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97d22efb-dd05-4c09-bf0f-54da767deffcHung Bui<p>Hi Robert,&nbsp;<br />Please be aware that port P2 doesn&#39;t generate interrupt regardless if it&#39;s main app core or the FLPR core. See section 8.8.3 in the datasheet.&nbsp;<br /><br /><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1786370408583v1.png" alt=" " /><br /><br />So the link you referred to is only about&nbsp;the GPIO pins that can be used as&nbsp;VPR IO ( <span>&nbsp;High-Performance Framework&nbsp;</span>)&nbsp; . Not about pins that can be used with FLPR.&nbsp;<br />As far as I know FLPR should be able to access all pins.&nbsp;<br /><br />Could you give more detail on which exact P1 pin that you tried to configure to get interrupt ?&nbsp;<br />What&#39;s the result when you run the firmware on the FLPR ?&nbsp;</p><div style="clear:both;"></div>