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114 lines
3.6 KiB
C++
114 lines
3.6 KiB
C++
/*
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Dimmer
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Demonstrates the sending data from the computer to the Arduino board,
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in this case to control the brightness of an LED. The data is sent
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in individual bytes, each of which ranges from 0 to 255. Arduino
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reads these bytes and uses them to set the brightness of the LED.
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The circuit:
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LED attached from digital pin 9 to ground.
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Serial connection to Processing, Max/MSP, or another serial application
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created 2006
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by David A. Mellis
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modified 30 Aug 2011
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by Tom Igoe and Scott Fitzgerald
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/Dimmer
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*/
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const int ledPin = 9; // the pin that the LED is attached to
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void setup()
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{
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// initialize the serial communication:
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Serial.begin(9600);
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// initialize the ledPin as an output:
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pinMode(ledPin, OUTPUT);
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}
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void loop() {
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byte brightness;
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// check if data has been sent from the computer:
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if (Serial.available()) {
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// read the most recent byte (which will be from 0 to 255):
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brightness = Serial.read();
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// set the brightness of the LED:
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analogWrite(ledPin, brightness);
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}
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}
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/* Processing code for this example
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// Dimmer - sends bytes over a serial port
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// by David A. Mellis
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//This example code is in the public domain.
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import processing.serial.*;
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Serial port;
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void setup() {
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size(256, 150);
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println("Available serial ports:");
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// if using Processing 2.1 or later, use Serial.printArray()
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println(Serial.list());
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// Uses the first port in this list (number 0). Change this to
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// select the port corresponding to your Arduino board. The last
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// parameter (e.g. 9600) is the speed of the communication. It
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// has to correspond to the value passed to Serial.begin() in your
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// Arduino sketch.
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port = new Serial(this, Serial.list()[0], 9600);
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// If you know the name of the port used by the Arduino board, you
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// can specify it directly like this.
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//port = new Serial(this, "COM1", 9600);
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}
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void draw() {
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// draw a gradient from black to white
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for (int i = 0; i < 256; i++) {
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stroke(i);
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line(i, 0, i, 150);
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}
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// write the current X-position of the mouse to the serial port as
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// a single byte
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port.write(mouseX);
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}
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*/
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/* Max/MSP v5 patch for this example
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----------begin_max5_patcher----------
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1008.3ocuXszaiaCD9r8uhA5rqAeHIa0aAMaAVf1S6hdoYQAsDiL6JQZHQ2M
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cxmfxVihWz6a3yqY9NazzUYkua9UnynadOtogW.JfsVGRVNEbWF8I+eHtcwJ
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D6YmX6fMznaF7kdczmJXwm.XSOOrdoHhNA7GMiZYLZZR.+4lconMaJP6JOZ8
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ftCs1YWHZI3o.sIXezX5ihMSuXzZtk3ai1mXRSczoCS32hAydeyXNEu5SHyS
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xqZqbd3ZLdera1iPqYxOm++v7SUSz
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-----------end_max5_patcher-----------
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*/
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