https://devzone.nordicsemi.com/f/nordic-q-a/70687/not-advertising-after-uart-pin-changeHi, i have changed uart pins to second port. After that it is not advertising. when i connect the FTDI converter to the uart pads from custom board, it starts working and advertising. If i remove the uart to usb converter, it will revert back to noten-USTelligent Community 13Wed, 20 Jan 2021 12:23:03 GMThttps://devzone.nordicsemi.com/thread/290236?ContentTypeID=1Wed, 20 Jan 2021 12:23:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9525c88e-ade5-4c7e-ae9f-d7e12441ac2bKenneth<p>Try to add a pull.up on RXD pin, if it is floating you may get receive errors (e.g. framing error) which the code may assert upon.</p> <p>Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/290134?ContentTypeID=1Wed, 20 Jan 2021 08:08:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d0bdba5d-52a3-4899-9169-e2f150ed5066daviddedwin<p>Assuming that you are using the nRF52840-DK.</p> <p>Can you switch off the logging&nbsp; in the application to see, if the act of sending the data to the unconnected UART results in the buffers getting full, and triggering a stop condition in the application. Verify the switching off of the UART logs on the connected UART and then switch to the unconnected UART.</p><div style="clear:both;"></div>