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

- 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 | LED
Name | ### close()
Examples |
    import processing.io.*;
    LED greenLed;
    boolean ledOn = false;

    void setup() {
      // the green LED is led0 on the Raspberry Pi
      greenLed = new LED("led0");
      frameRate(1);
    }

    void draw() {
      ledOn = !ledOn;
      if (ledOn) {
      	greenLed.brightness(1.0);
      } else {
      	greenLed.brightness(0.0);
      }
    }

    // cleanup on keypress
    void keyPressed() {
      led.close();
      exit();
    }
Description | Restores the previous state Without calling this function the LED will remain in the current state even after the sketch has been closed.
Syntax |
    .close()
Returns | void

Updated on January 1, 2021 03:38:10am EST
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