add arduino-0018-linux (32 bit)
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/* Blink without Delay
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Turns on and off a light emitting diode(LED) connected to a digital
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pin, without using the delay() function. This means that other code
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can run at the same time without being interrupted by the LED code.
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The circuit:
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* LED attached from pin 13 to ground.
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* Note: on most Arduinos, there is already an LED on the board
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that's attached to pin 13, so no hardware is needed for this example.
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created 2005
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by David A. Mellis
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modified 17 Jun 2009
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by Tom Igoe
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http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay
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*/
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// constants won't change. Used here to
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// set pin numbers:
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const int ledPin = 13; // the number of the LED pin
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// Variables will change:
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int ledState = LOW; // ledState used to set the LED
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long previousMillis = 0; // will store last time LED was updated
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// the follow variables is a long because the time, measured in miliseconds,
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// will quickly become a bigger number than can be stored in an int.
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long interval = 1000; // interval at which to blink (milliseconds)
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void setup() {
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// set the digital pin as output:
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pinMode(ledPin, OUTPUT);
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}
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void loop()
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{
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// here is where you'd put code that needs to be running all the time.
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// check to see if it's time to blink the LED; that is, is the difference
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// between the current time and last time we blinked the LED bigger than
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// the interval at which we want to blink the LED.
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if (millis() - previousMillis > interval) {
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// save the last time you blinked the LED
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previousMillis = millis();
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// if the LED is off turn it on and vice-versa:
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if (ledState == LOW)
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ledState = HIGH;
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else
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ledState = LOW;
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// set the LED with the ledState of the variable:
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digitalWrite(ledPin, ledState);
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}
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}
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