 
 #define _DEBUG 0
 
-char command[2] = {0xFF,0xFF};
+char control_data[2] = {0xFF,0xFF};
 
 volatile uint8_t data_buff[DATA_LEN]={0x41,0x5A,0xFF,0xFF,0xFF}; // Reply: nothing pressed.
 volatile uint8_t command_buff[DATA_LEN]={0x01,0x42,0x00,0x00,0x00};

  sei(); // Enable global interrupts.

  if (_DEBUG) {
    Serial.println("-----------------------------------");
    Serial.println("Playstation 2 Protocol initialized.");
    Serial.println("-----------------------------------");

    It's going to be read as a char but then translated
    to HEX, taking only the lower byte
  */

  if (Serial.available() >= 2) {
    
    Serial.readBytes(control_data, 2); // Read 16 bits

    // DEBUG 
    if (_DEBUG) {
      Serial.print("Command : 0x");
      Serial.print(lowByte(control_data[0]), HEX);
      Serial.print(" 0x");
      Serial.print(lowByte(control_data[1]), HEX);
      Serial.println("");
    }
    
    // We store the new commands in the data_buff buffer
    data_buff[2] = lowByte(control_data[0]);
    data_buff[3] = lowByte(control_data[1]);

  }

