Custom command in MCUMGR

[dagvegar]

Hello,

My goal is to read out UICR address 0x10001080UL from command line / MCUMGR.

mcumgr --conntype serial --connstring COM8,baud=115200

How to acheive that?

I have tried and successfully compiled ran these mcumgr handler examples:

https://docs.zephyrproject.org/latest/services/device_mgmt/mcumgr_handlers.html

https://github.com/zephyrproject-rtos/zephyr/tree/main/tests/subsys/mgmt/mcumgr/handler_demo

But I don't see the new commands anywhere, not a new shell command, not a new run routine, please explain how to achieve this.

[dagvegar]

Thanks a lot, now it's working!

[dagvegar]

Though it's now working, the current consumption with the uart enabled is too high. I want to do mcumgr over USB. 

In order to disable uart:

&uart0 {
  status = "disabled";
};

It looks like

CONFIG_MCUMGR_TRANSPORT_SHELL=y

requires uart in the device tree:

ncs/v2.6.1/zephyr/include/zephyr/device.h:89:41: error: '__device_dts_ord_70' undeclared

Is it possible to keep this working over USB, but with uart disabled?

[dagvegar]

After fiddling around with different combinations, this combination works:

# Enable the serial mcumgr transport.

CONFIG_MCUMGR_TRANSPORT_UART=y

CONFIG_MCUMGR_GRP_SHELL=y

# Enable the shell MCUmgr transport.

CONFIG_BASE64=y

CONFIG_SHELL=y

CONFIG_SHELL_BACKEND_DUMMY=y

#CONFIG_MCUMGR_TRANSPORT_SHELL=y

CONFIG_SHELL_BACKEND_SERIAL=n

/ {
	chosen {
		zephyr,uart-mcumgr = &cdc_acm_uart0;
	};
};

&zephyr_udc0 {
	cdc_acm_uart0: cdc_acm_uart0 {
		compatible = "zephyr,cdc-acm-uart";
	};
};

&uart0 {
	status = "disabled";
};