[nrf5 sdk for zigbee 4.1] ZigBee leave network failed

[zero]

Dear Support Team,

Based on nrf5 sdk for zigbee 4.1, nrf52840dk, do the following tests: 1. Modify the \examples\zigbee\light_control\light_switch example, that is, add button 1 to leave network, button 2 to join network, button 3 to directly erase nvram, and button 4 to soft restart.
2. Compile the example and download to 52840-Dk.
3. The device presses button2 to join network.
4. The device presses button4 to invoke a soft restart, and sees the device rejoin.
5. The device presses button1 leave network.
Phenomenon: The device does not leave the network and no abnormal error is displayed. Please help to analyze and solve it.
The following is the light_switch program, which modifies main.c and zigbee_helpers.c.

6521.light_switch.rar

[Marte Myrvold]

Hi,

What are you using as coordinator? Can you get a sniffer log of this?

I am not able to reproduce the issue with your project. I built your project in nRF5 SDK for T&Z v4.1.0 with the modified zigbee_helpers.c, and used Zigbee Shell from nRF Connect SDK as coordinator. The device left successfully when I performed the same steps as you, that is, joining the network, soft reset, and then leaving the network.

The screenshot from the sniffer log shows the device rejoining the network after reset, sending a leave command, and then there is no more communication from the light switch on the network:

Best regards,
Marte

[zero]

Dear Marte，

I use the \examples\zigbee\light_control\light_coordinator example as ZC, and I will grab the sniffer log tomorrow.

Best regards,
Zero

[Marte Myrvold]

Hi Zero,

I tested with light_coordinator as ZC now, and the light switch still left successfully.
Have you made any other changes to the SDK files?

Best regards,
Marte

[zero]

Dear Marte，

Nothing changed, but I will re-extract the 4.1 sdk to test it.

Best regards,
Zero

[zero]

Dear Marte，

I performed the following steps to test:
1. Re-decompress nRF5_SDK_for_T&Z_v4.1.0_32ce5f8.zip.
2. Compile nRF5_SDK_for_T&Z_v4.1.0_32ce5f8\examples\zigbee\light_control\light_coordinator as the coordinator, and download it to one of the 52840-DK.
3. Copy the above main.c and zigbee_helpers.c to nRF5_SDK_for_T&Z_v4.1.0_32ce5f8\examples\zigbee\light_control\light_switch, and replace the original, compile and download to another 52840-DK.
4. Follow the above operation, that is, join network->restart device->leave network.
After seeing the device restarted through packet capture, press button2 leaver network, and the "leave" action is displayed, but the device does not have a leave network.
Why?

zigbee_leave.pcapng

Best regards,
Zero

[Marte Myrvold]

Hi Zero,

I am not sure I understand the issue. The device sends a Leave command, leaves the network and no longer communicates on the network. Are you expecting it to do something different?

Best regards,
Marte

[zero]

Dear Marte，

After the device sent the "leave" command to the coordinator, it did not report the "leave signal", which resulted in the device not leaving the network successfully, and all signals would not be reported.

Best regards,
Zero

[Marte Myrvold]

Hi Zero,

I understand what you mean now. I know that there was a bug in zb_bdb_reset_via_local_action() which was fixed in v4.2.0. Can you try updating the SDK?

Also, since nRF5 SDK for Thread and Zigbee is deprecated, I would recommend moving to nRF Connect SDK instead if possible.

Best regards,
Marte

[zero]

Dear Marte，

This project has already been mass-produced and launched, and it cannot be switched to NCS. If T&Z 4.1 is patched to fix the error of zb_bdb_reset_via_local_action()?

Best regards,
Zero

[Marte Myrvold]

Hi Zero,

I am not sure whether this issue is due to the bug in zb_bdb_reset_via_local_action(), or if it is due to something else, but the zb_bdb_reset_via_local_action() bug is fixed in nRF5 SDK T&Z v4.2.0. The v4.2 release had a lot of fixes, so I strongly recommend updating from v4.1 to v4.2 if possible regardless.

Best regards,
Marte