/*
Project:  RFID Access with ESP8266 / ESP32 und Arduinos
Author:   Thomas Edlinger for www.edistechlab.com
Date:     Created 21.05.2020 
Version:  V1.0

Angepasst: JTM
Datum: 10.6.2024
 
-RC522           -ESP32 S3       
VCC               3.3V         
RST               GPIO  6  
GND               GND          
MISO              GPIO  13 
MOSI              GPIO  11
SCK               GPIO  12  
SDA (SS/NSS)      GPIO  10   
IRQ    
           -            
 */

//Diese Pins müssen angepasst werden (GPIO Pin von der Liste oben)
#define RST_PIN     6          
#define SS_PIN      10

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

MFRC522 mfrc522(SS_PIN, RST_PIN); 

void setup() {
  Serial.begin(115200);   
  SPI.begin();      
  mfrc522.PCD_Init();   
}

void accessGranted() {
  Serial.println(" Access Granted ");
  Serial.println();
  delay(3000);
}

void accessRefused() {
   Serial.println(" Access Refused ");
   delay(3000);
}

void loop() {
  //Serial.println(" test");
  
  if ( ! mfrc522.PICC_IsNewCardPresent()) {
    return;
  }
  if ( ! mfrc522.PICC_ReadCardSerial()) {
    return;
  }

  //Zeigt die UID im serial monitor
  Serial.println();
  Serial.print(" UID tag  :");
  String content= "";
  for (byte i = 0; i < mfrc522.uid.size; i++) {
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }

  content.toUpperCase();
  Serial.println();
  Serial.print(" PICC type: ");
  MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
  Serial.println(mfrc522.PICC_GetTypeName(piccType));

  if (content.substring(1) == "1F F8 5D 48" || content.substring(1) == "B2 38 DB 0E") {
    accessGranted();
  }
  else {
    accessRefused();
  }
  delay(500);
}