https://devzone.nordicsemi.com/f/nordic-q-a/42647/tracedata1-4-vs-gpioJust verifying to be 110% sure: The TRACEDATA1-4 pins may be used as ordinary GPIO pins when no trace-functionality is configured for the debugger? So even if a debugger is connected, the pins will remain as GPIO pins and the peripherals connected toen-USTelligent Community 13Thu, 17 Jan 2019 12:48:48 GMThttps://devzone.nordicsemi.com/thread/166221?ContentTypeID=1Thu, 17 Jan 2019 12:48:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7dc15e15-525d-4381-8c3d-2ccaa30244cabjorn-spockeli<p>HI Sverre,&nbsp;</p> <p>Yes, the <span>TRACEDATA1-4 pinswill be ordinary GPIOs&nbsp;</span>as long as the TRACECONFIG-&gt;TRACEMUX field is set to 0, i.e. GPIOs multiplexed onto all trace-pins.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>