nrf5340: Using the DTM sample firmware with SWDIO and SWDCLK as UART RX/TXhttps://devzone.nordicsemi.com/f/nordic-q-a/117270/nrf5340-using-the-dtm-sample-firmware-with-swdio-and-swdclk-as-uart-rx-txHello, We are looking at using the DTM sample firmware for BLE tuning in a form-factor version of our product. Unfortunately, the only GPIO pins we have exposed are SWDIO and SWDCLK. Is it possible to repurpose those as UART pins? If so, what do I needen-USTelligent Community 13Wed, 18 Dec 2024 12:26:24 GMTRE: nrf5340: Using the DTM sample firmware with SWDIO and SWDCLK as UART RX/TXhttps://devzone.nordicsemi.com/thread/515474?ContentTypeID=1Wed, 18 Dec 2024 12:26:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:006cb2ed-ff3a-41ba-9d01-12869d2f38fbmathiaso<p>Hi, Alexander.</p> <p>As can be seen in the UARTE <a href="https://docs.nordicsemi.com/bundle/ps_nrf5340/page/uarte.html#ariaid-title50">PSEL.TXD</a> and <a href="https://docs.nordicsemi.com/bundle/ps_nrf5340/page/uarte.html#ariaid-title52">PSEL.RXD</a> register descriptions, the UART_TX and UART_RX signals have to be routed to GPIO ports [0..1], and pins [0..31]. The <a href="https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/pin.html">pin assignments list</a> shows that SWDIO and SWDCLK only have debug functionality. Hence, the SWD pins can not be used as UART pins.</p> <p>Best regards,<br />Mathias</p><div style="clear:both;"></div>