AT-based Modem Support in the Zephyr Project: Present and Future - Michael Scott & Ricardo Salveti, Foundries.io Product makers can now solve complicated connectivity issues by adding low power LTE Cat-M1 and NB-IOT modems to their products. However, the software for these modems is far from standard and often has to be customized by use-case. In response, the Zephyr Project now has some basic modem driver implementations which provide transparent access to the networking stack in the same way as if the device had ethernet or an 802.15.4 adapter. This presentation will discuss which hardware is currently supported, and how these drivers were implemented using the offloaded networking stack. Michael will end with open discussion around the challenges of future modem APIs for a basic 3GPP interface, eDRX / power saving modes and modem configuration settings storage.
