Using CLI in nRF Connect examples

Some Matter examples for the development kits from Nordic Semiconductor include a command-line interface that allows access to application logs and Zephyr shell.

Accessing the CLI console

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.

Example: Starting the CLI console with Minicom

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 kit, 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 %)
...

Listing all commands

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.

Using OpenThread commands

OpenThread commands are accessible from the shell, but they must preceded by ot. For example:

uart:~$ ot networkkey
00112233445566778899aabbccddeeff
Done

Using Matter-specific commands

The nRF Connect examples let you use several Matter-specific CLI commands.

These commands are not available by default and to enable using them, set the CONFIG_CHIP_LIB_SHELL=y Kconfig option in the prj.conf file of the given example.

Every invoked command must be preceded by the matter prefix.

See the following subsections for the description of each Matter-specific command.

device command group

Handles a group of commands that are used to manage the device. You must use this command together with one of the additional subcommands listed below.

factoryreset subcommand

Performs device factory reset that is hardware reset preceded by erasing of the whole Matter settings stored in a non-volatile memory.

uart:~$ matter device factoryreset
Performing factory reset ...

onboardingcodes command group

Handles a group of commands that are used to view information about device onboarding codes. The onboardingcodes command takes one required parameter for the rendezvous type, then an optional parameter for printing a specific type of onboarding code.

The full format of the command is as follows:

onboardingcodes none|softap|ble|onnetwork [qrcode|qrcodeurl|manualpairingcode]

none subcommand

Prints all onboarding codes. For example:

uart:~$ matter onboardingcodes none
QRCode:             MT:W0GU2OTB00KA0648G00
QRCodeUrl:          https://project-chip.github.io/connectedhomeip/qrcode.html?data=MT%3AW0GU2OTB00KA0648G00
ManualPairingCode:  34970112332

none qrcode subcommand

Prints the device onboarding QR code payload. Takes no arguments.

uart:~$ matter onboardingcodes none qrcode
MT:W0GU2OTB00KA0648G00

none qrcodeurl subcommand

Prints the URL to view the device onboarding QR code in a web browser. Takes no arguments.

uart:~$ matter onboardingcodes none qrcodeurl
https://project-chip.github.io/connectedhomeip/qrcode.html?data=MT%3AW0GU2OTB00KA0648G00

none manualpairingcode subcommand

Prints the pairing code for the manual onboarding of a device. Takes no arguments.

uart:~$ matter onboardingcodes none manualpairingcode
34970112332

config command group

Handles a group of commands that are used to view device configuration information. You can use this command without any subcommand to print all available configuration data or to add a specific subcommand.

uart:~$ matter config
VendorId:        65521 (0xFFF1)
ProductId:       32768 (0x8000)
HardwareVersion: 1 (0x1)
FabricId:
PinCode:         020202021
Discriminator:   f00
DeviceId:

The config command can also take the subcommands listed below.

pincode subcommand

Prints the PIN code for device setup. Takes no arguments.

uart:~$ matter config pincode
020202021

discriminator subcommand

Prints the device setup discriminator. Takes no arguments.

uart:~$ matter config discriminator
f00

vendorid subcommand

Prints the vendor ID of the device. Takes no arguments.

uart:~$ matter config vendorid
65521 (0xFFFF1)

productid subcommand

Prints the product ID of the device. Takes no arguments.

uart:~$ matter config productid
32768 (0x8000)

hardwarever subcommand

Prints the hardware version of the device. Takes no arguments.

uart:~$ matter config hardwarever
1 (0x1)

deviceid subcommand

Prints the device identifier. Takes no arguments.

fabricid subcommand

Prints the fabric identifier. Takes no arguments.

ble command group

Handles a group of commands that are used to control the device Bluetooth LE transport state. You must use this command together with one of the additional subcommands listed below.

help subcommand

Prints help information about the ble command group.

uart:~$ matter ble help
  help            Usage: ble <subcommand>
  adv             Enable or disable advertisement. Usage: ble adv <start|stop|state>

adv start subcommand

Enables Bluetooth LE advertising.

uart:~$ matter ble adv start
Starting BLE advertising

adv stop subcommand

Disables Bluetooth LE advertising.

uart:~$ matter ble adv stop
Stopping BLE advertising

adv status subcommand

Prints the information about the current Bluetooth LE advertising status.

uart:~$ matter ble adv state
BLE advertising is disabled

nfc command group

Handles a group of commands that are used to control the device NFC tag emulation state. You must use this command together with one of the additional subcommands listed below.

start subcommand

Starts the NFC tag emulation.

uart:~$ matter nfc start
NFC tag emulation started

stop subcommand

Stops the NFC tag emulation.

uart:~$ matter nfc stop
NFC tag emulation stopped

state subcommand

Prints the information about the NFC tag emulation status.

uart:~$ matter nfc state
NFC tag emulation is disabled

dns command group

Handles a group of commands that are used to trigger performing DNS queries. You must use this command together with one of the additional subcommands listed below.

browse subcommand

Browses for DNS services of _matterc_udp type and prints the received response. Takes no argument.

uart:~$ matter dns browse
Browsing ...
DNS browse succeeded:
   Hostname: 0E824F0CA6DE309C
   Vendor ID: 9050
   Product ID: 20043
   Long discriminator: 3840
   Device type: 0
   Device name:
   Commissioning mode: 0
   IP addresses:
      fd08:b65e:db8e:f9c7:2cc2:2043:1366:3b31

resolve subcommand

Resolves the specified Matter node service given by the fabric-id and node-id.

uart:~$ matter dns resolve fabric-id node-id
Resolving ...
DNS resolve for 000000014A77CBB3-0000000000BC5C01 succeeded:
   IP address: fd08:b65e:db8e:f9c7:8052:1a8e:4dd4:e1f3
   Port: 5540