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build/shared/dist/examples/Loop/Loop.pde
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build/shared/dist/examples/Loop/Loop.pde
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/*
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Loop
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Lights multiple LEDs in sequence, then in reverse. Demonstrates
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the use of a for() loop and arrays.
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The circuit:
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* LEDs attached from pin 2 through 7 to ground
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created 23 Sep 2007
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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/Loop
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*/
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int timer = 100; // The higher the number, the slower the timing.
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int pins[] = { 2, 3, 4, 5, 6, 7 }; // an array of pin numbers
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int pinCount = 6; // the number of pins (i.e. the length of the array)
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void setup() {
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// the array elements are numbered from 0 to num_pins - 1:
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for (int thisPin = 0; thisPin < pinCount; i++) {
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// set each pin as an output:
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pinMode(pins[thisPin], OUTPUT);
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}
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}
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void loop() {
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// loop through the array:
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for (int thisPin = 0; thisPin < pinCount; thisPin++) {
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// turn on the pin with the array element's pin number
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// turning it on:
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digitalWrite(pins[thisPin], HIGH);
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// pause:
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delay(timer);
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// and turn it off:
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digitalWrite(pins[thisPin], LOW);
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}
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// do the same loop in reverse:
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for (int thisPin = pinCount; thisPin >= 0; thisPin--) {
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// turn on the pin with the array element's pin number
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// turning it on:
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digitalWrite(pins[thisPin], HIGH);
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// pause:
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delay(timer);
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// and turn it off:
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digitalWrite(pins[thisPin], LOW);
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}
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}
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