nRF52840 Zephyr - External LTE-M modem, offloading and LwM2M

[newUser]

Hi,

On our custom nRF52840 board, we have an external LTE-M modem.

We would like to eventually use this modem to send data over the network, including LwM2M.
What is the best way to achieve this? I have some experience with the nRF9160, in which socket offloading is used.

Is this the recommended method here as well? Can the existing LwM2M implementation use that offloading driver without problem?
We still need to be able to interface with the modem in the application layer as well.

Please let me know your thoughts!

[newUser]

Thank your for your reply Martin, but I meant the Socket Offloading code used in the nRF9160. 

I would implement our modem the same way.

[Martin Lesund]

The Serial LTE modem source code is here.
no lwm2m support yet though.