Zephyr shell on an nRF52840 board

[AndyM]

I'm trying to build a basic shell sample on a custom board based on nRF52840 

In the proj.conf file I have

CONFIG_SHELL=y

CONFIG_SHELL_GETOPT=y 

CONFIG_SHELL_BACKENDS=y

CONFIG_SHELL_BACKEND_SERIAL=y

CONFIG_SHELL_ECHO_STATUS=y

I get the following compile error
'__device_dts_ord_DT_CHOSEN_zephyr_shell_uart_ORD' undeclared (first use in this function)

What am I missing?

Thank you

[Marte Myrvold]

Hi,

You need to add zephyr,shell-uart  to the chosen node in the devicetree file for your board. You can see an example of how this is done in the devicetree file for nRF52840 DK (zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts):

/ {
	model = "Nordic nRF52840 DK NRF52840";
	compatible = "nordic,nrf52840-dk-nrf52840";

	chosen {
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &uart0;
		zephyr,bt-mon-uart = &uart0;
		zephyr,bt-c2h-uart = &uart0;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
	};

Best regards,

Marte