RE: UART example - nRF 9160 DK

Didrik Rokhaug — Wed, 17 Jul 2019 13:26:48 GMT

Hi.

Is this the example you are using?

That example does not use multiple UART peripherals by default. It reads from UART_0, and prints the output (also to UART_0). If you change UART_0 to UART_1 in the call to device_get_binding it will read from UART_1, and print to UART_0.

While the nRF9160 opens 3 ports to the PC, only one is usable from the nRF9160 by default. One is connected to the nRF52840 acting as a board controller, while the last one is not connected by default. Take a look at the documentation here. The unconnected port can be connected to UART_1 on the nRF9160 by flashing the "hello_world" sample to the board controller as described in the nRF9160DK and NCS documentation.

Remember to configure any peripherals you use as non-secure if your application is running in non-secure mode as described in the NCS tutorial.

Best regards,

Didrik