I had the same question, and developed a solution. I started with a Seeed Studio LoRa-E5 STM32WLE5JC, created a new Cube project and added all of the bits to make a LoRaWAN End Client Node. Then, to complete it, I merged the lora_app.c code from the 'WL55 example. This project regenerates with Cube, can be used as the basis for a new project from IOC file, and is tested on Seeed LoRa-E5; once I get RAK3172 hardware, I'll create support for this, which differs only in GPIOs used for RF switch control.
My repo is at https://github.com/danak6jq/Seeed-LoRa-E5
Please feel free to open issues as desired.
Dana
