https://devzone.nordicsemi.com/f/nordic-q-a/119536/nrf9151-dk-gpio-26-27-default-stateHello, I&#39;m trying to figure out why GPIO 26 and 27 on the nrf9151 DK default to HIGH. I have my SALAE USB scope connected to several pins. When the board resets, only GPIO 26 and 27 go HIGH, before being set by my code to go LOW. GPIO 22, 23, 28, foren-USTelligent Community 13Wed, 05 Mar 2025 14:06:52 GMThttps://devzone.nordicsemi.com/thread/526005?ContentTypeID=1Wed, 05 Mar 2025 14:06:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b19a128a-9582-4c3e-95dd-dbcdc8448484Konstantin Klitenik<p>You&#39;re right. When I briefly looked at the DK, I saw the solder bridge but thought it was disconnected by default. Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/525828?ContentTypeID=1Tue, 04 Mar 2025 21:41:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:51f6edb8-b79f-4945-8579-8dfd5e5a2e1fMariano Goluboff<p>Hi Konstantin,</p> <p>The nRF9151DK has those pins connected to the UART on the nRF5340 interface device, which shows them as virtual COM ports. It&#39;s possible that the nRF5340 is driving the pins. If you want to use the GPIOs for something other than UART, I would recommend that you cut the solder bridges to disconnect from the interface chip&#39;s UARTs:</p> <p></p> <p>Here&#39;s page 2 of the nRF9151DK&#39;s schematic which shows which solder bridges to cut:</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/pastedimage1741124472171v1.png" alt=" " /></p> <p>Mariano</p><div style="clear:both;"></div>