Hardware I/O: Processing 3 + Raspberry Pi
October 27 2015
“The Hardware I/O library allows to access the computer’s hardware periperals, such as digital inputs and outputs, serial busses, and the like, in a fashion similar to the Arduino plaform. This library is only available for embedded Linux boards with the necessary kernel drivers, such as the Raspberry Pi.”
https://github.com/processing/processing/wiki/Raspberry-Pi
and
https://processing.org/reference/libraries/io/index.html