Summary

On V5a+ Flight Controller Boards we introduced an additional SX1281 LoRa Radio on the SPI1 bus. The intent of bringing in this radio was to add S-Band communications capability to the PROVES Kit for intersatellite links and the potential for high data rate downlinks. We have had issues though with bringing this radio fully into the fold due to weak driver support for the radio transceiver.

Particularly now, with the transition in progress to Zephyr, we need to try and find a working solution for utilizing the SX128x in Zephyr.

This repo from Semtech might provide us with a good starting point:
https://github.com/Lora-net/SWL2001/tree/master/lbm_lib/smtc_modem_core/radio_drivers/sx128x_driver