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

// Define the RFID pins connected to ESP32
#define RST_PIN 22 // Reset pin
#define SS_PIN 21  // Slave Select pin

MFRC522 rfid(SS_PIN, RST_PIN); // Create an instance of the RC522 RFID reader

void setup() {
  Serial.begin(115200); // Initialize serial communication
  SPI.begin(18, 19, 23, 21); // Initialize SPI pins (SCK, MISO, MOSI, SS)
  rfid.PCD_Init(); // Initialize the RFID reader
  Serial.println("RC522 RFID Simulation in Wokwi");
  Serial.println("Place your card near the reader...");
}

void loop() {
  // Simulate checking for a card
  Serial.println("Simulating an RFID card read...");

  // Simulate a card's unique ID (UID)
  byte simulatedUID[4] = {0xDE, 0xAD, 0xBE, 0xEF}; // Fake card ID
  Serial.print("Simulated Card UID: ");
  for (byte i = 0; i < 4; i++) {
    Serial.print(simulatedUID[i] < 0x10 ? " 0" : " ");
    Serial.print(simulatedUID[i], HEX);
  }
  Serial.println();

  delay(2000); // Wait 2 seconds before simulating the next card
}