RE: nRF9160 lwm2m registeration, how to add option(others)?

Øyvind — Fri, 30 Apr 2021 09:34:20 GMT

OK, thanks for clarifying. Is there a reason for you using NCS v1.4.0? In your last ticket you were using NCS v1.5.0. Several improvements have been introduced to v1.5.0, among other a CoAP bug (fix long options encoding), and v1.5.0 is tested with modem fw 1.2.3.

Our expert replies:

It's not that the Zephyr implementation is lacking these options, it's the other library (from Sercomm) that adds some custom options to the registration message (not covered by the standard). Currently Zephyr does not allow to add custom options to the registration message. If the customer really wants to do that, he'd need to modify the lwm2m library and usecoap_packet_append_option(). One caveat the function has, is that you need to add options in an ascending order (in terms of option ID) so perhaps these are out of order.

Kind regards,
Øyvind

RE: nRF9160 lwm2m registeration, how to add option(others)?

NCOIRD — Thu, 29 Apr 2021 22:48:54 GMT

Hi,

I am using NCS 1.4.0. Also, modem firmware is 1.2.3.

RE: nRF9160 lwm2m registeration, how to add option(others)?

Øyvind — Thu, 29 Apr 2021 11:39:04 GMT

Hello,

first of all, I need to verify: Are you using NCS 1.4.0 or 1.5.0?

I will need to forward this to our LwM2M / CoAP expert.

Kind regards,
Øyvind