//read a signal over serial line and blink and LED based when charcter "A" is recieved
//10/27/2008  BitMonkey Labs
//


int outputPin=13;
int LEDstate=LOW;
int inByte;

void ToggleLEDstate()
{
   if(LEDstate==LOW)
   {
     LEDstate=HIGH;
   }
   else
   {
      LEDstate=LOW;
   }
   //NOTE: start looking at BITWISE operators to figure out how to do this stuff more efficiently
}


void setup()
{

  pinMode(outputPin, OUTPUT);
  digitalWrite(outputPin, LEDstate);
  Serial.begin(57600);
}

void loop()
{
  if(Serial.available()>0)
  //check if any data came in on the serial port
  {
      inByte=Serial.read();      //read on byte of info

      if(inByte=='A')
      {
          ToggleLEDstate();
          digitalWrite(outputPin, LEDstate);
      }
  }

}