Can I receive a device-generated command at the Zigbee CLI Agent?

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

Edvin — Thu, 04 Jun 2020 08:31:44 GMT

I am not sure I understand.

communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 TX: zcl cmd F4CE36E7389B99B0 10 F16F -p 0104 20
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX:  
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX: zcl cmd F4CE36E7389B99B0 10 F16F -p 0104 20
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX: Done

These prints are from your python scripts, right? Can you see where they are printed? Can you use these events for anything?

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

francisco.colaco — Thu, 04 Jun 2020 07:53:01 GMT

I cannot use, since what I receive is the default response to the command the python application sent. There is no acknowledgment or impression of any command that is generated by the device.

So I must conclude the answer is a resounding "no, you cannot see any device generated commands".

Thanks for your attention.

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

Edvin — Thu, 04 Jun 2020 06:35:45 GMT

Arent those prints printed from the python script? Can you use those events to do what you want?

I haven't used the zigbee python scripts. Which one are you using?

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

francisco.colaco — Wed, 03 Jun 2020 13:50:52 GMT

The problem is that I receive a default response, but not the command I send. Thus when I send a command from the coordinator through the script, I get the following transaction:

communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 TX: zcl cmd F4CE36E7389B99B0 10 F16F -p 0104 20
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX:
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX: zcl cmd F4CE36E7389B99B0 10 F16F -p 0104 20
communicator.py: DEBUG: CLI::UartConn: /dev/ttyACM0@115200 RX: Done

Now, there is a response command sent from the end device (so server generated), which I see with a sniffer on Wireshark. Can I read that server-generated command with the nordic CLI and have it available on a python script, at the PC side?

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

Edvin — Wed, 03 Jun 2020 12:10:01 GMT

So you are using the CLI example from the SDK? You can look for the callbacks that print the reply from the commands, and try to add your custom function there, perhaps?

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

francisco.colaco — Tue, 02 Jun 2020 16:32:46 GMT

Thanks for your response.

What I would like is to receive commands originated from the devices (server generated). Ideally the arrival of messages should trigger some sort of callback. But having to poll the stream will do, nonetheless.

Nordic has done a fantastic job creating the Zigbee python API, but I could not find any way to receive and process commands originated from the devices. I have seen the commands originated from the device in wireshark, using a Bluetooth sniffer module, and would like a simple way to build a coordinator that doubles as a gateway to the Internet.

RE: Can I receive a device-generated command at the Zigbee CLI Agent?

Edvin — Tue, 02 Jun 2020 12:52:10 GMT

[quote user=""]Can I receive those commands at the Zigbee CLI asynchronously?[/quote]

Do you mean that you want to "auto-respond" with some sort of function within the CLI example?

And what do you mean by: "to which endpoint and cluster must I direct the commands"? I guess your custom cluster would need an endpoint which you can write to in order to send a response back to the device, or is that not what you mean?