https://devzone.nordicsemi.com/f/nordic-q-a/112918/communication-between-nrf52840-and-nrf9160-with-connectivity-bridge-on-thingy-91Hello, I&#39;m experiencing an issue with communication between the nRF52840 and nRF9160 on the Thingy platform using the connectivity bridge. I successfully established communication between the two devices using UART1 without employing the connectivityen-USTelligent Community 13Tue, 16 Jul 2024 11:27:08 GMThttps://devzone.nordicsemi.com/thread/494111?ContentTypeID=1Tue, 16 Jul 2024 11:27:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fe521342-280d-488d-8c15-787e3b4d64c9Youssef Elbattah<p>Thank you, it works for me </p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/493564?ContentTypeID=1Fri, 12 Jul 2024 06:48:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dd802de0-f82e-4c7a-aeb2-8c4402b20acdSigurd<p>Hi!</p> [quote user=""]I successfully established communication between the two devices using UART1 without employing the connectivity bridge sample[/quote][quote user=""]I will provide the two applications I used to communicate successfully without the connectivity bridge. Could someone guide me on how to merge these applications with the connectivity bridge sample?[/quote] <p>Looks like you now have 2 firmware modules that uses UART1, both in your&nbsp;app_uart_init() in main.c,&nbsp; and in the&nbsp;connectivity bridge uart_handler.c , so you have a conflict here, I think you need to&nbsp;look into and decide what module you want to use.</p><div style="clear:both;"></div>