   NAK = 0x31,
   DELETE_ALL = 0x41
 } Command;
-
 /**
  * Command structure
  */

{
  fillChecksum(bytes,len);
  int i = 0;
  /*Serial.print("< ");
  for (i = 0; i < len; i++) {
    Serial.print(bytes[i],HEX);
    Serial.print(" ");
  }
  Serial.println();*/
  if (Serial.write(bytes,len) != len)
    error(10);
}


//Error pin to flash on error
int ERROR_PIN = 13;
int PWM_PIN = 3;
/**
 * Enumeration of commands
 * Value set to control code of command
