Control an Arduino Uno from Igor

int incomingByte = 0;<br />
boolean space = false;<br />
<br />
void setup() {                <br />
  // initialize the digital pin as an output.<br />
  // Pin 13 has an LED connected on most Arduino boards:<br />
  pinMode(13, OUTPUT);<br />
  Serial.begin(9600);<br />
<br />
}<br />
<br />
void loop() {<br />
  if (Serial.available() > 0) {<br />
    incomingByte = Serial.read();<br />
    if (incomingByte == 32) {<br />
      space = true;<br />
      digitalWrite(13, HIGH);   // set the LED on<br />
    }<br />
    else {<br />
      space = false;<br />
      digitalWrite(13, LOW);    // set the LED off<br />
    }<br />
  }<br />
}