coap server connection to border router

RE: coap server connection to border router

Sigurd Hellesvik — Thu, 07 Apr 2022 11:47:31 GMT

Good that you solved it, thank you for sharing your solution!

[quote user="robtic"]So this issue is fixed, however, it is still not clear why ot joiner start <pskc> is giving me an InvalidArgs error.[/quote]

I guess your passkey is too short. Try to use a longer one.
If you continue to face problems with the joiner, create a new ticket on DevZone explaining your problem, and we will help.

Good luck onwards,
Sigurd Hellesvik

RE: coap server connection to border router

robtic — Thu, 07 Apr 2022 00:05:36 GMT

Hi Sigurd,

I have found the issue. There is/was a bug in more recent builds of zephyr. Github link.

After I've updated by config as per the bug fix my CoAP Server can acquire On-Mesh prefix IP and i can ping 64:ff9b::808:808 from it.

The solution is to add

CONFIG_OPENTHREAD_SLAAC=y

to prj.conf file.

So this issue is fixed, however, it is still not clear why ot joiner start <pskc> is giving me an InvalidArgs error.

RE: coap server connection to border router

robtic — Wed, 06 Apr 2022 23:33:20 GMT

Hi,

It took me a few attempts to get the OTBR + nRF52840 Dongle working but I got there in the end.

I got the Thread network setup.

The CoAP Server (Router) is linked to the BR (Leader)

I have executed the command line from the link you provided: Ping the external Network on the BR.

I have re-compiled my CoAP Server with

# Enable OpenThread CoAP support API
CONFIG_OPENTHREAD_COAP=y
CONFIG_OPENTHREAD_JOINER=y

In the image below you can see the BR and CoAP Server side by side. As you can see CoAP Server still does not acquire the On-Mesh address and if I try to execute the ot joiner start <pskc> it tells me the arguments are wrong.

edit: Sigurd, I wonder if this is the cause to my issue. I'll try it out.

RE: coap server connection to border router

Sigurd Hellesvik — Tue, 05 Apr 2022 12:05:29 GMT

The issue is that your device does not have a Global address using the On-Mesh Prefix, as you see explained in OpenThread: Join the network.

Would it be an alternative for you to use the official OTBR instead, as it is more up to date than our old version?
See Thread Border Router for our tutorial on how to set it up.

Regards,
Sigurd Hellesvik

RE: coap server connection to border router

robtic — Mon, 04 Apr 2022 17:39:45 GMT

Hi Sigurd,

Thank you for coming back to me. Please see below.

Let me know if you need any additional information.

RE: coap server connection to border router

Sigurd Hellesvik — Mon, 04 Apr 2022 06:44:35 GMT

What was the output of the command "ipaddr"?

How exactly does your ping command look?

Regards,
Sigurd Hellesvik