Read GUID of LGT8F328P

read_guid.ino

void setup() {
  Serial.begin(9600);
  delay(1000);
  
  // read GUID of LGT8F328P
  // https://www.avrfreaks.net/sites/default/files/forum_attachments/LGT8F88P%20LGT8F168P%20LGT8F328P%20translated.pdf
  // if you want to read other device's unique id, use ArduinoUniqueID
  // https://www.arduinolibraries.info/libraries/arduino-unique-id
  #ifdef _LGT8F328P_SPEC_H_
  char buf[10];
  sprintf(buf,"%02X%02X%02X%02X",GUID3,GUID2,GUID1,GUID0);
  Serial.print("device_id ");
  Serial.print(buf);
  Serial.print("\n");
  #endif
  Serial.println("initialized.");
}

void loop() {
  delay(1000);
}