Collection of C programming examples dealing with Bluetooth (LE) using BlueZ/GDBus. Prototyped on x64 and Raspberry Pi 3B+, both running Ubuntu 18.04 and BlueZ 5.50.
Also available as video tutorials:
Morse code: https://www.youtube.com/watch?v=DUlr3cKXO18
Advertising: https://www.youtube.com/watch?v=D49ewKjoj9w