Modified SparkFun SX1509 I/O Expander Library for use on PI type SBC's
Also added a "C" wrapper.
Original source taken from: https://github.com/sparkfun/SparkFun_SX1509_Arduino_Library
Use:
make
sudo make install
make demo
I'm using this to control buttons and encoder wheels for the pihpsdr project from G0ORX: https://github.com/g0orx/pihpsdr on an Odroid-C1 SBC.