ctibor@brnacik.cz Ctibor Brančík Gordon Henderson WiringPi is a PIN based GPIO access library written in C for the BCM2835 used in the Raspberry Pi (1, 2 and 3). It’s designed to be familiar to people who have used the Arduino “wiring” system. A main library, devices library and utility app are included. You need to uncomment the relevant features in config.txt to use this package (for example, "dtparam=spi=on"). NB: please note that Gentoo is treated as an unsupported platform by upstream; any bug reports sent there will be rejected.