#include <SPI.h>
#include <MFRC522.h>

// RFID setup
#define RST_PIN D3
#define SS_PIN D2
MFRC522 rfid(SS_PIN, RST_PIN);

// Microphone setup
int micPin = D1; // Analog pin connected to the microphone module
int micValue = 0;

void setup() {
  
  pinMode(micPin, INPUT);

  // Initialize RFID
  SPI.begin();
  rfid.PCD_Init();

  // Initialize Serial
  Serial.begin(9600);
}

void loop() {
  // Read microphone value
  micValue = analogRead(micPin);

 
  Serial.print("Mic Value:");
  Serial.println(micValue);
  delay(500);

  // Check for RFID card
  if (rfid.PICC_IsNewCardPresent() && rfid.PICC_ReadCardSerial()) {
  
  
  Serial.print("RFID UID:");

  // Print UID to LCD
  for (byte i = 0; i < rfid.uid.size; i++) {
    Serial.print(rfid.uid.uidByte[i] < 0x10 ? "0" : "");
    Serial.print(rfid.uid.uidByte[i], HEX);
    if (i != rfid.uid.size - 1) Serial.print(":");
  }
  Serial.println();
  delay(3000);

  // Halt RFID card
  rfid.PICC_HaltA();
  }
}