#define ledpin 12

int readin = 0;
int readval = 0;
int delayval = 0;
int i = 0;
String stringval;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(ledpin, OUTPUT);
  digitalWrite(ledpin, HIGH);
  delay(200);
  digitalWrite(ledpin, LOW);
  delay(200);
  digitalWrite(ledpin, HIGH);
  delay(200);
  digitalWrite(ledpin, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available() > 0) {
    readval=0;
    readin = Serial.parseInt();
    stringval = String(readin);
    Serial.print("Byte received:");
    Serial.println(readin);
    
    delay(100);
  }

  if (readin == 0)
  {
    digitalWrite(ledpin, HIGH);
  }

  if (readin == 1)
  {
    digitalWrite(ledpin, LOW);
  }
  
  if (readin>1 && readin<26)
  {
    delayval=readin*100;
    digitalWrite(ledpin, HIGH);
  delay(delayval);
  digitalWrite(ledpin, LOW);
  delay(delayval);
    }
    
  if (readin>25){
    for(i=0; i<2; i++)
  {
    readval = readval * 10 + ( stringval[i] - '0' );
    if (readval>3)
    {
      i++;
    }
  }
  readin = readval;
  readval = 0;
  Serial.println("fixed data:");
  Serial.println(readin);
  delay(500);
    }

}