我正在开发一个用于从MIFARE标签读取和写入数据的应用程序。我买了一个可以使用NFC技术读取和写入MIFARE标签操作的设备。

NFC屏蔽

我一直在使用MIFARE ultralight标签，但在尝试验证特定内存地址时遇到了问题。由于这个原因，我不能开始阅读。这是我的Arduino代码:

//This example reads a MIFARE memory block. It is tested with new MIFARE 1K cards.
//Uses default keys.
//Contributed by Seeed Technology Inc (www.seeedstudio.com)

#include <PN532.h>

#define SCK 52
#define MOSI 51
#define SS 10
#define MISO 50

PN532 nfc(SCK, MISO, MOSI, SS);

void setup(void) {
  Serial.begin(9600);
  Serial.println("Hello!");

  nfc.begin();

  uint32_t versiondata = nfc.getFirmwareVersion();
  if (! versiondata) {
    Serial.print("Didn't find PN53x board");
    while (1); // halt
  }
  // 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);
  
  // 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) {
    Serial.print("Read card #"); Serial.println(id);
    
    uint8_t keys[]= {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
    if(nfc.authenticateBlock(1, id ,0x08,KEY_A,keys)) { //authenticate block 0x08
      Serial.print("giris tmm #");
      //if authentication successful
      uint8_t block[16];
      //read memory block 0x08
      if(nfc.readMemoryBlock(1,0x08,block)) {
        Serial.print("Read tmm #");
        //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();
      }
    }
  }
  
  delay(500);
}

此读取代码是为Arduino Mega 2560和Seeedstudio NFC Shield v1.0和MIFARE超轻标签制作的。在写作操作过程中也遇到了同样的问题。

我该如何解决这个问题？