/*For Loop Iteration
Demonstrates the use of a for() loop.
Lights multiple LEDs in sequence, then in reverse.
The circuit:* LEDs from pins 2 through 7 to ground
created 2006 by David A. Mellis
modified 30 Aug 2011 by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/ForLoop
*/
int timer = 100; // The higher the number, the slower the timing.
void setup() {
// use a for loop to initialize each pin as an output:
for (int thisPin = 2; thisPin < 8; thisPin++) {
pinMode(thisPin, OUTPUT);
}
}
void loop() {
// loop from the lowest pin to the highest:
for (int thisPin = 2; thisPin < 8; thisPin++) {
digitalWrite(thisPin, HIGH); // turn the pin on:
delay(timer);
digitalWrite(thisPin, LOW); // turn the pin off:
}
// loop from the highest pin to the lowest:
for (int thisPin = 7; thisPin >= 2; thisPin--) {
digitalWrite(thisPin, HIGH); // turn the pin on:
delay(timer);
digitalWrite(thisPin, LOW); // turn the pin off:
}
}