The following examples for the development kits from Nordic Semiconductor include a command-line interface that allows access to application logs and Zephyr shell:
The CHIP nRF Connect Pigweed Example Application does not support CLI.
To access the CLI console, use a serial terminal emulator of your choice, like Minicom or GNU Screen. Use the baud rate set to 115200.
For example, to start using the CLI console with Minicom, run the following command with /dev/ttyACM0 replaced with the device node name of your development kit:
$ minicom -D /dev/ttyACM0 -b 115200
When you reboot the board, you will see the boot logs in the console, similar to the following messages:
uart:~$ I: nRF5 802154 radio initialized I: 8 Sectors of 4096 bytes I: alloc wra: 0, ff0 I: data wra: 0, 0 *** Booting Zephyr OS build v2.4.0-ncs1 *** I: Init CHIP stack ...
This means that the console is working correctly and you can start using shell commands. For example, issuing the kernel threads command will print information about all running threads:
uart:~$ kernel threads Scheduler: 277 since last call Threads: 0x20006518 CHIP options: 0x0, priority: -1 timeout: 536896912 state: pending stack size 8192, unused 7256, usage 936 / 8192 (11 %) 0x20004ab0 SDC RX options: 0x0, priority: -10 timeout: 536890152 state: pending stack size 1024, unused 848, usage 176 / 1024 (17 %) ...
To list all available commands, use the Tab key, which is normally used for the command completion feature.
Pressing the Tab key in an empty command line prints the list of available commands:
uart:~$ clear date device flash help history kernel nrf_clock_control ot resize shell
Pressing the Tab key with a command entered in the command line cycles through available options for the given command.
OpenThread commands are also accessible from the shell. However, they must preceded by ot. For example:
uart:~$ ot masterkey 00112233445566778899aabbccddeeff Done