nRF9160 at_client sample default uart port

[Hugo]

Hi,

I am testing the at_client sample code in the nRF Connect SDK.

I want to change the default AT host com port to uart1 or uart2.

I tried to modify prj.conf but it will output an error message ("ERROR: AT Host not initialized").

How can I make changes?

Thanks.

My computer platform : window7 64bit

[Hakon]

Hello, what changes did you do to prj.conf? Have you specified the changes in nrf9160_pca10090ns.overlay?

[Hugo]

Hi, Hakon :

Modify prj.conf and add below setting

CONFIG_UART_2_NRF_UARTE=y
CONFIG_UART_2=y
CONFIG_AT_HOST_UART=2

Add nrf9160_pca10090.overlay

/ {
	chosen {
		zephyr,at-uart=&uart2;
	};
};

&uart2 {
	current-speed = <115200>;
	status = "ok";
	tx-pin = <18>;
	rx-pin = <17>;
	rts-pin = <19>;
	cts-pin = <21>;
};

These are my modifications.
Please correct my mistake.

Thanks.

[Hakon]

Uart2 is not available for the nrf91. It's routed to the nrf52 chip on the dk. Please use uart1 instead.

[Hugo]

Hi, Hakon:

I have tried both UART1 and UART2.

But AT host still does not enable normally or operational.

Thanks. 

[Hugo]

Hi,

I use UART1 and add

CONFIG_BSD_LIBRARY_TRACE_ENABLED=n

to prj.conf.

Now I can use AT host on UART1.