49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
/*
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for loop iteration
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Demonstrates the use of a for() loop.
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Lights multiple LEDs in sequence, then in reverse.
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The circuit:
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* LEDs from pins 2 through 7 to ground, through resistors
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created 2006
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by David A. Mellis
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modified 5 Jul 2009
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by Tom Igoe
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http://leaflabs.com/docs/lang/cpp/for.html
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Modified for Maple
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by LeafLabs
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*/
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int delayTime = 100; // The higher the number, the slower the timing.
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void setup() {
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// Use a for loop to initialize each pin as an output:
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for (int thisPin = 2; thisPin <= 7; thisPin++) {
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pinMode(thisPin, OUTPUT);
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}
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}
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void loop() {
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// Loop from the lowest pin to the highest:
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for (int thisPin = 2; thisPin <= 7; thisPin++) {
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// Turn the pin on:
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digitalWrite(thisPin, HIGH);
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delay(delayTime);
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// Turn the pin off:
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digitalWrite(thisPin, LOW);
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}
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// Loop from the highest pin to the lowest:
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for (int thisPin = 7; thisPin >= 2; thisPin--) {
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// Turn the pin on:
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digitalWrite(thisPin, HIGH);
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delay(delayTime);
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// Turn the pin off:
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digitalWrite(thisPin, LOW);
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}
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}
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