Zigbee Examples persist network after reboot (IDFGH-10677)

[muc-martin]

Is your feature request related to a problem?

I tried the HA_on_off_light HA_on_off_switch
examples and compiled them for the ESP32-H2 everything worked. But after a reboot of the coordinator the light-node needs to reboot as well otherwise commands are not transferred.

Describe the solution you'd like.

Add a example how to persist the zigbee network state for both devices after reboot.

Describe alternatives you've considered.

No response

Additional context.

No response

[xieqinan]

Hi @muc-martin ,
The Zigbee network still exists after the coordinator reboots. The reason why commands are not transferred is that the switch example uses a volatile variable to store the light (end device) device information. When the switch (coordinator) resets, the device information is cleared from the switch's RAM, resulting in the commands not being transferred.

The esp-zigbee-sdk provides the esp_zb_zdo_device_bind_req() API to bind two devices. By doing so, the device information can be stored into flash and recovered by the device, which can be referred to in the esp-zigbee-sdk

Besides, more practical examples will be added to esp-idf zigbee.

[muc-martin]

Hi @xieqinan,

thank you for the info.
It would be great if you could add an example how to connect and use a commercially available zigbee wall switch (e.g. switch to receive and process commands on the ESP32 board and perform custom actions depending on which button was pressed.

Thanks.

[chshu]

@muc-martin We have updated the examples in the esp-zigbee-sdk to store the network and binding information persistently: https://github.com/espressif/esp-zigbee-sdk/tree/main/examples/esp_zigbee_HA_sample

So after the reboot, the devices will continue to work together.

[allexoK]

Hello, sorry for stupid question, how exactly can I retrieve stored info from memory?

[chshu]

Hello, sorry for stupid question, how exactly can I retrieve stored info from memory?

The Zigbee Stack related information is maintained within SDK, the SDK will do the store and retrieve by itself. User applicaion only handles the application specific info.