/*
  DigitalReadSerial
 Reads a digital input on pin 2, prints the result to the serial monitor 
 
 This example code is in the public domain.
 */
byte incomingBytes[3];   // for incoming serial data

// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input pin:
  // print out the state of the button:
  /*Serial.write('H');
  delay(1);        // delay in between reads for stability*/
  if (Serial.available() <= 3 && Serial.available() >= 1 ) {
    // read the incoming byte:
    Serial.readBytes(incomingBytes,3);
    
    // say what you got:
    /*Serial.print("I received: ");
    Serial.print(incomingBytes[0]);
    Serial.print(incomingBytes[1]);
    Serial.print(incomingBytes[2]);

    Serial.write(incomingBytes[0]);
    Serial.write(incomingBytes[1]);
    Serial.write(incomingBytes[2]);*/
    //Serial.print(incomingBytes,3);
    Serial.write(incomingBytes,3);
  }/*else{
    while(Serial.available()){Serial.read();} 
  }*/
 //while(Serial.available()){Serial.read();} //censé vider le buffer série
}