Zephyr shell on an nRF52840 board

Question

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 · Answer

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

Zephyr shell on an nRF52840 board

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