https://devzone.nordicsemi.com/f/nordic-q-a/57096/issue-with-printk-not-printing-to-debug-uart-declared-in-overlay-fileMy debug uart stopped working after creating overlay files to make port changing easier. Is this a known issue? They&#39;re still the same pins and baud rates.en-USTelligent Community 13Wed, 29 Jan 2020 12:03:27 GMThttps://devzone.nordicsemi.com/thread/231625?ContentTypeID=1Wed, 29 Jan 2020 12:03:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cedef003-e440-4304-aa76-6c4fc2d59ed3Martin Lesund<p>Hi Matt,</p> <p>Please state which U<a href="https://github.com/NordicPlayground/fw-nrfconnect-zephyr/blob/master/boards/arm/nrf9160_pca10090/nrf9160_pca10090_common.dts#L91" rel="noopener noreferrer" target="_blank">ART you have change</a>&nbsp;and if you have set up the<a href="https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/nrf-connect-sdk-tutorial#h183sjwm5829mbs21y3111ulj6et5ph1" rel="noopener noreferrer" target="_blank"> .overlay file correctly.</a><br /><br />If you are using the nRF91DK and want to change the pins out to the external pins, you need to change the boardcontroller FW as well.</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/45476/connecting-uart1-to-a-periph-on-nrf9160-dk/178988#178988" rel="noopener noreferrer" target="_blank">This is described in this thread.</a></p><div style="clear:both;"></div>