/* Serial In and Timer Combo
 * ------------
 * by Jeff Gray
 *
 * Serial switching LED and a Timer Switching LED
 */

//Pins
int serLED = 13;       // LED connected to pin 13h
int timeLED = 9;

int serbyte;
int timer = 0;

void setup() 
{
  pinMode(serLED, OUTPUT);    // pin 13 as Serial h status
  pinMode(timeLED, OUTPUT);   // pin 9 as timer blink
  beginSerial(9600);          // initialize serial port
}


void loop() {
  timer = millis();                // timer variable set to millis() function
  
  if (serialAvailable() ){         // If serial communication is active...
    serbyte = serialRead();        // read in the serial byte and set it to this variable
  }  
  printInteger(timer);             // send out our timer serially
  serialWrite(10);                 // carraige return and line break
  serialWrite(13);
  
  if(serbyte == 'h')               // if receive an 'h'
  {
    digitalWrite(serLED, HIGH);    // turn ON the LED
  } else { 
    digitalWrite(serLED, LOW);     // if not turn it OFF
  }
  
  if((timer / 1000) % 2 == 1) {     // if timer is on an odd second, turn on, even turn off 
    digitalWrite(timeLED, HIGH);    // turn ON the LED
  } else { 
    digitalWrite(timeLED, LOW);     // if not turn it OFF
  }

}