Zigbee OTA server and Client connection problem

[Ali Sajjad]

Hi there,

I am trying to implement the OTA DFU feature via Zigbee in my product. i tried to implement the example available in SDK as below
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_tz_v4.2.0%2Fzigbee_example_ota_client.html

I used three development kits of Nrf 52840, one acted as a server ,one as a client  and one as a light coordinator. I followed the example as it is but encountered that sever doesn't connect with coordinator and also once DFU package is installed via BLE it doesn't transfer image to client.

Is the documentation complete? Do we need to use any command after server has the DFU package installed, to transfer it to client?

Any help in this regard will be highly appreciated.

Thanks 
Syed Ali Sajjad
Embedded Developer

[Jørgen Holmefjord]

Hi,

Can you clarify which example(s) you are using? You are linking to the Zigbee OTA client example, but you also mention BLE in your post.

There are two Zigbee OTA examples in the SDK:

• Zigbee OTA Upgrade Client Example - Can be used together with nrfutil as the OTA server, transferring the image from a PC directly to the Zigbee devices
• Zigbee OTA Upgrade Server Example with image transfer over BLE - Can be used in place of nrfutil, to transfer the image from a phone that only supports BLE - not Zigbee, to relay the image to the Zigbee network.

The documentation should be complete. Please let me know which step you get stuck at, and any logs from the applications running on your board (OTA server and client(s)).

Best regards,
Jørgen

[Ali Sajjad]

Hi Jorgen,

Thank you for your response. I have tried both examples but couldn't perform the firmware update, So for the first example (Zigbee OTA Client example) I performed all the steps listed in Testing section. I was able to create a client and than prepare a image and DFU package but in the end when I connects the OTA server to transfer the image from my PC to client it only gets installed on OTA server but not on the client.

I find step no 7b a bit confusing. shouldn't the serial number in the following step be of client instead of server

7.b)Run the following command to start the DFU process over Zigbee, where 608123456 is the serial number of the Zigbee OTA Upgrade Server for the Development Kit, and 11 is the 802.15.4 channel number:

nrfutil dfu zigbee -f 007B-0141-01020101-good_image.zigbee -snr 608123456 --channel 11

Awaiting for your guidance.

Regards
Syed Ali Sajjad

[Ali Sajjad]

Hi there,

I also have a question how are we going to initiate DFU once image is installed in our OTA upgrade server. Also if there are multiple clients in ZigBee network how are we going to choose on which client we want to update firmware.

Your assistance will be highly apppreciated.

Thanks
Syed Ali Sajjad