For Loop Iteration

1/*
2  For Loop Iteration
3*/
4
5int timer = 100;           //  The higher the number, the slower the timing.
6
7void setup() {
8  // use  a for loop to initialize each pin as an output:
9  for (int thisPin = 2; thisPin  < 8; thisPin++) {
10    pinMode(thisPin, OUTPUT);
11  }
12}
13
14void loop()  {
15  // loop from the lowest pin to the highest:
16  for (int thisPin = 2; thisPin  < 8; thisPin++) {
17    // turn the pin on:
18    digitalWrite(thisPin, HIGH);
19    delay(timer);
20    // turn the pin off:
21    digitalWrite(thisPin, LOW);
22  }
23
24  // loop from the highest pin to the lowest:
25  for (int thisPin =  7; thisPin >= 2; thisPin--) {
26    // turn the pin on:
27    digitalWrite(thisPin,  HIGH);
28    delay(timer);
29    // turn the pin off:
30    digitalWrite(thisPin,  LOW);
31  }
32}
33