/*************************************************************************************************
                                      PROGRAMMINFO
**************************************************************************************************
Funktion: RFID-Shield Test

**************************************************************************************************
Version: 16.11.2022
**************************************************************************************************
Board: UNO
**************************************************************************************************
Libraries:
https://github.com/espressif/arduino-esp32/tree/master/libraries
C:\Users\User\Documents\Arduino
D:\gittemp\Arduino II\A156_Wetterdaten_V3
**************************************************************************************************
C++ Arduino IDE V1.8.19

**************************************************************************************************
Einstellungen:
https://dl.espressif.com/dl/package_esp32_index.json
http://dan.drown.org/stm32duino/package_STM32duino_index.json
http://arduino.esp8266.com/stable/package_esp8266com_index.json

It uses SPI communication. Connect SCK, MI, MO and NSS on the shield with jumper cap. Then slide SET0 to L, SET1 to H.
There are two slide switches on the shield for you to select the interface mode:
      SET0  SET1
UART  L     L
SPI   L     H
IIC   H     L
**************************************************************************************************/

#include <PN532.h>
#include <SPI.h>

/*Chip select pin can be connected to D10 or D9 which is hareware optional*/
/*if you the version of NFC Shield from SeeedStudio is v2.0.*/
#define PN532_CS 10

PN532 nfc(PN532_CS);
#define  NFC_DEMO_DEBUG 1

void setup(void) {
#ifdef NFC_DEMO_DEBUG
  Serial.begin(115200);
  Serial.println("Hello!");
#endif
  nfc.begin();

  uint32_t versiondata = nfc.getFirmwareVersion();
  if (! versiondata) {
#ifdef NFC_DEMO_DEBUG
    Serial.print("Didn't find PN53x board");
#endif
    while (1); // halt
  }
#ifdef NFC_DEMO_DEBUG
  // Got ok data, print it out!
  Serial.print("Found chip PN5"); 
  Serial.println((versiondata>>24) & 0xFF, HEX);
  Serial.print("Firmware ver. "); 
  Serial.print((versiondata>>16) & 0xFF, DEC);
  Serial.print('.'); 
  Serial.println((versiondata>>8) & 0xFF, DEC);
  Serial.print("Supports "); 
  Serial.println(versiondata & 0xFF, HEX);
#endif
  // configure board to read RFID tags and cards
  nfc.SAMConfig();
}

void loop(void) {
  uint32_t id;
  // look for MiFare type cards
  id = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A);

  if (id != 0) 

  {
#ifdef NFC_DEMO_DEBUG
    Serial.println(" "); 
    Serial.println("Read card #"); 
    Serial.println(id);
#endif  
    uint8_t keys[]= { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF };
    if(nfc.authenticateBlock(1, id ,0x08,KEY_A,keys)) //authenticate block 0x08
    {
      //if authentication successful
      uint8_t block[16];
      //read memory block 0x08
      if(nfc.readMemoryBlock(1,0x08,block))
      {
#ifdef NFC_DEMO_DEBUG
        //if read operation is successful
        for(uint8_t i=0;i<16;i++)
        {
          //print memory block
          Serial.print(block[i],HEX);
          Serial.print(" ");
        }
        Serial.println();
#endif
      }
    }
  }
 delay(500);
}