https://devzone.nordicsemi.com/f/nordic-q-a/71084/old-nrf9160-dk-external-gpio-headerHello, I am trying to observe communication between the nRF9160 and nRF52840 on v0.8.2 of the nRF9160-DK board. According to the schematic and documents, P0.23 should be permanently routed to pin 3 of the P27 header on the board, regardless of the stateen-USTelligent Community 13Fri, 29 Jan 2021 13:07:41 GMThttps://devzone.nordicsemi.com/thread/291996?ContentTypeID=1Fri, 29 Jan 2021 13:07:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:216bb0c3-f52e-4ab7-8545-40b7d5219dccjongor<p>Never mind, after further study, I can see the pin actually routes via D16 label to TRACEDATA1. So it&#39;s either have the 52840 interface connected to P0.23 or have TRACEDATA1 connected to P0.23, not both.</p> <p>This&nbsp;is very different from v1.0.0 of the hardware where&nbsp;the GPIO header is always showing P0.23 regardless of usage.</p><div style="clear:both;"></div>