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Processing tutorial: Read button presses from Arduino

import processing.serial.*;

Serial port; // The serial port

void setup() {
size(200, 200);
println(Serial.list()); // list all available serial ports
port = new Serial(this, Serial.list()[2], 19200); // initialize serial communication
}

void draw() {
background(0);
while (port.available() > 0) { // while there are bytes available to read from the serial port
int inByte = port.read(); // read the byte
if (inByte==0) {
fill(255);
rect(width/4,height/4,width/2,height/2);
}
}
}

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Submitted by seandockray on 16 October 2006 - 4:43pm.
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