Zigbee ZCL read attributes command always times-out without any response.

[Jody P Ono]

I'm using the nRF52840 dongle with nRF Connect 1.90 and the CLI.  I cannot get "zcl attr read" command to return anything.  It simply times-out.  What am I doing wrong?

[Marte Myrvold]

Hi,

What device are you sending the zcl attr read command to, and what cluster and attribute?

Are you able to get a sniffer log of this? If you have an additional nRF52840 Dongle or DK you can use our nRF Sniffer for 802.15.4. Please start the sniffer before the network is started, so the sniffer has the network key.

Best regards,

Marte

[Jody P Ono]

Hi, Marte:

I've tried sending the "zcl attr read" command to each of five different devices: Three Philips Hue bulbs and two DK boards running as Zigbee light bulbs.  I've tried cluster 0x0000, attribute 0x00.  The command times-out without any response every time.  Probably will take me a day or two to fire-up a sniffer as I have other deadlines.  Any other suggestions in the meantime would be greatly appreciated.

Best regards,

Jody

[Marte Myrvold]

Hi Jody,

It is hard giving suggestions without knowing what is causing the issue, and a sniffer log would greatly help in figuring this out. I was able to reproduce the issue on my side, but I am not able to get a sniffer log of it today. I will look more into this and get a sniffer log of it tomorrow.

Best regards,

Marte

[Jody P Ono]

Hi, Marte:

One of my colleagues will likely be picking-up this issue in the coming days to get a sniffer log to you.  Thanks for all of your help!

Best regards,

Jody

[Marte Myrvold]

Hi Jody,

I just wanted to update you on what I have found so far. After getting a sniffer log of the behavior myself, I see that the commands are sent correctly:

So the dongle does send the Read Attributes command, and you can see that it successfully receives the Read Attribute response command as well, as it sends an ACK in return. So the error is not with sending and receiving the command, but something else. I will keep looking into this and inform you or your colleagues when I find out more.

Best regards,

Marte