const int led=PF_1;
const int led2=PF_2;
const int led3=PF_3;
// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600); // msp430g2231 must use 4800
   pinMode (led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin A3:
  int sensor = analogRead(A3)>>3;
  int val=255;
  int e=sensor-val;
  // print out the value you read:
  Serial.println(e);
  delay(1); // delay in between reads for stability
  if(val==e)
  {
    analogWrite(led,0);
    analogWrite(led2,0);
    analogWrite(led3,0);
  }
   else if (val <e)
  {
    analogWrite(led,abs(e));
    analogWrite(led3,255);
    analogWrite(led2,0);
  }
    else if (val >e)
  {
    analogWrite(led,abs(e));
    analogWrite(led2,255);
    analogWrite(led3,0);
  }
}