Zephyr shell on an nRF52840 board

RE: Zephyr shell on an nRF52840 board

AndyM — Wed, 06 Apr 2022 18:15:29 GMT

Answering my own question

CONFIG_SHELL_LOG_BACKEND=n

did the trick

Thank you!

RE: Zephyr shell on an nRF52840 board

AndyM — Wed, 06 Apr 2022 17:46:50 GMT

Follow up question

I have logging enabled with the following config items

CONFIG_LOG=y

CONFIG_LOG_PRINTK=y

CONFIG_USE_SEGGER_RTT=y

CONFIG_LOG2_MODE_IMMEDIATE=y

CONFIG_LOG2_MODE_DEFERRED

CONFIG_LOG_BACKEND_RTT=y

CONFIG_LOG_DEFAULT_LEVEL=4

When I added uart I see the logging in the uart console as well as in the JLink RTT viewer

How do I disable logging in the UART console ? I only need my custom commands to appear there.

Thank you

RE: Zephyr shell on an nRF52840 board

AndyM — Wed, 06 Apr 2022 15:37:23 GMT

That resolved it, thank you!

RE: Zephyr shell on an nRF52840 board

Marte Myrvold — Wed, 06 Apr 2022 11:38:50 GMT

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