Reference+
Class Name
LED
Description
Opens a LED device.
This class can control your computer's build-in LEDs, such as the ones
commonly used to indicate the power status and disk activity.
Your operating system might not be set up to allow regular users to do this
kind of modification. If this is the case you should install a so-called
udev rule that relaxes the permissions for the files in
/sys/class/leds. You can also try running Processing as root user using
"sudo", but this is generally not recommended.
Examples
import processing.io.*; LED greenLed; boolean ledOn = false; void setup() { // list all available LEDs printArray(LED.list()); // the green LED is led0 on the Raspberry Pi greenLed = new LED("led0"); frameRate(0.5); } void draw() { ledOn = !ledOn; if (ledOn) { greenLed.brightness(1.0); } else { greenLed.brightness(0.0); } }
Constructors
LED(dev)
Parameters
dev
(String)
device name
Methods
brightness()
Sets the brightnessclose()
Restores the previous statelist()
Lists all available LED devices
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