Writing a function

Forum 2005-2010 (read only) General Frequently-Asked Questions
8 
#define YELLOW_LED 8
#define RED_LED 9
#define BLUE_LED 10

void flash_led(byte led)
{
    digitalWrite(led, HIGH);
    delay(500);
    digitalWrite(led, LOW);
    delay(500);
}

void setup()
{
    pinMode(YELLOW_LED, OUTPUT);
    pinMode(RED_LED, OUTPUT);
    pinMode(BLUE_LED, OUTPUT);
}

void loop()
{

    flash_led(YELLOW_LED);
    flash_led(RED_LED);
    flash_led(BLUE_LED);
}

This will flash each LED once, in sequence, forever.

-j