- Processing
- p5.js
- Processing.py
- Processing for Android

- Processing Foundation

This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Class | GPIO
Name | ### pinMode()
Examples |
    import processing.io.*;

    void setup() {
      GPIO.pinMode(4, GPIO.INPUT);

      // On the Raspberry Pi, GPIO 4 is pin 7 on the pin header,
      // located on the fourth row, above one of the ground pins

      frameRate(0.5);
    }

    void draw() {
      // sense the input pin
      if (GPIO.digitalRead(4) == GPIO.HIGH) {
        fill(255);
      } else {
        fill(204);
      }
      stroke(255);
      ellipse(width/2, height/2, width*0.75, height*0.75);
    }
Description | Configures a pin to act either as input or output Unlike on Arduino, where pins are implicitly set to inputs by default, it is necessary to call this function for any pin you want to access, including input pins.
Syntax |
    .pinMode(pin, mode)
Parameters |
pin | int: GPIO pin
mode | int: GPIO.INPUT or GPIO.OUTPUT
Returns | void

Updated on November 10, 2017 05:36:31pm EST