buenzliai/main/main.ino

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

#define PN532_CS 10

PN532 nfc(PN532_CS);

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup(void) {
  nfc.begin();

  uint32_t versiondata = nfc.getFirmwareVersion();
  if (! versiondata) {
    while (1); // halt
  }
  // 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) 
  {
  
    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))
      {

      }
    }
  }
 delay(1000);
}