This C++ SDK helps developing Arduino and mbed (ARM) applications for LPWAN Orange Network (works also on other network). Its purpose is to ease the development of connected objects prototypes. A sample is available, fully integrated with Arduino.
To see more details, open https://github.com/Orange-OpenSource/OpenLPWANKit and from mbed platform: https://developer.mbed.org/compiler/#nav:/OrangeDash (authentication required)