https://devzone.nordicsemi.com/f/nordic-q-a/42525/uart-works-only-if-nrf52-is-connected-to-pcHello, So I need to connect my NRF52 with a LoRa module E32 via an UART connexion, and then I need to send data using this function: The probleme is that my code work only if my NRF52 is plugged to a computer via USB and open a Hyperterminal, ifen-USTelligent Community 13Mon, 14 Jan 2019 21:05:05 GMThttps://devzone.nordicsemi.com/thread/165600?ContentTypeID=1Mon, 14 Jan 2019 21:05:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7116e68e-b317-469b-9696-e4fec0a0637cawneil<p>Are you using a Nordic DK?</p> <p>If so, the on-board JLink is permanently wired to the nRF52&#39;s UART pins to provide the virtual COM port connection to the PC.</p> <p>To work with an off-board device, you need to break that connection - or use different pins.</p> <p>See the DK User Guide and schematics for details ...</p><div style="clear:both;"></div>