Arduino NFC模块(DFRobot)没有阅读Whiztags

时间:2016-01-23 16:10:00

标签: arduino tags nfc arduino-uno uart

我买了NFC module from DFRobot并且我正在使用他们的示例程序进行一些更改,因为我只想读取我的标签的UID。它适用于随附的标签,但它无法识别我的任何NFC Whiztags(包含Topaz 512芯片)。

有谁知道如何解决这个问题?

这是我的代码:

#include <SoftwareSerial.h>
/* 

 # Editor : Adrian
 # Date   : 2013.04.18
 # Ver    : 0.1
 # Product: NFC Module for Arduino
 # SKU    : DFR0231

 # Description:     
 # When the a card close to the device , the PC will receive the data 
 # Connect the NFC Card's TXD, RXD, GND, +3.3V to Nano's D0RX, D1TX, GND, +3.3V
 # Or connect the NFC Card's TXD, RXD, GND, +5V to Nano's D0RX, D1TX, GND, +5V


 PN532 reads the tag by Arduino mega/Leonardo
 command list:

 #wake up reader
 send: 55 55 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 03 fd d4 14 01 17 00
 return: 00 00 FF 00 FF 00 00 00 FF 02 FE D5 15 16 00

 #get firmware
 send: 00 00 FF 02 FE D4 02 2A 00
 return: 00 00 FF 00 FF 00 00 00 FF 06 FA D5 03 32 01 06 07 E8 00

 #read the tag
 send: 00 00 FF 04 FC D4 4A 01 00 E1 00
 return: 00 00 FF 00 FF 00 00 00 FF 0C F4 D5 4B 01 01 00 04 08 04 XX XX XX XX 5A 00
 XX is tag.

 */

 //************* start **************

const unsigned char wake[24]={
  0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xfd, 0xd4, 0x14, 0x01, 0x17, 0x00};//wake up NFC module
const unsigned char firmware[9]={
  0x00, 0x00, 0xFF, 0x02, 0xFE, 0xD4, 0x02, 0x2A, 0x00};//
const unsigned char tag[11]={
  0x00, 0x00, 0xFF, 0x04, 0xFC, 0xD4, 0x4A, 0x01, 0x00, 0xE1, 0x00};//detecting tag command
const unsigned char std_ACK[25] = {
  0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x0C, \
0xF4, 0xD5, 0x4B, 0x01, 0x01, 0x00, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x4b, 0x00};
char old_id[5];

unsigned char receive_ACK[25];//Command receiving buffer
//int inByte = 0;               //incoming serial byte buffer

#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#define print1Byte(args) mySerial.write(args)
#define print1lnByte(args)  mySerial.write(args),mySerial.println()
#else
#include "WProgram.h"
#define print1Byte(args) mySerial.print(args,BYTE)
#define print1lnByte(args)  mySerial.println(args,BYTE)
#endif

SoftwareSerial mySerial(10, 11); // RX, TX
unsigned char myUID[12] = "70 89 7E 43";

void setup()
{
  Serial.begin(9600);   // open serial with PC
  mySerial.begin(115200);    //open mySerial with device
  wake_card();
  delay(200);
  Serial.println("Scanning..."); 

}

void loop()
{
  send_tag(); 
  read_ACK(25);
  delay(100);
      if (test_ACK ()) {
        copy_id ();
        displayuid ();
         delay (10000);
       }

    }


void copy_id (void) 
{//save old id
  int ai, oi;
  for (oi=0, ai=19; oi<5; oi++,ai++) {
    old_id[oi] = receive_ACK[ai];
  }
}

int test_ACK (void) 
{// return true if receive_ACK accord with std_ACK
  int i;
  for (i=0; i<19; i++) {
    if (receive_ACK[i] != std_ACK[i])
      return 0;
  }
  return 1;
}


void send_id (void) 
{//send id to PC
  int i;
  Serial.print ("ID: ");
  for (i=19; i<= 23; i++) {
    Serial.print (receive_ACK[i], HEX);
    Serial.print (" ");
  }
  Serial.println ();
}


void UART1_Send_Byte(unsigned char command_data)
{//send byte to device
  print1Byte(command_data);
#if defined(ARDUINO) && ARDUINO >= 100
  mySerial.flush();// complete the transmission of outgoing serial data 
#endif
} 


void UART_Send_Byte(unsigned char command_data)
{//send byte to PC
  Serial.print(command_data,HEX);
  Serial.print(" ");
} 


void read_ACK(unsigned char temp)
{//read ACK into receive_ACK[]
  unsigned char i;
  for(i=0;i<temp;i++) {
  receive_ACK[i]= mySerial.read();
  }
}

void wake_card(void)
{//send wake[] to device
  unsigned char i;
  for(i=0;i<24;i++) //send command
  UART1_Send_Byte(wake[i]);
}


void send_tag(void)
{//send tag[] to device
  unsigned char i;
  for(i=0;i<11;i++) //send command
  UART1_Send_Byte(tag[i]);
}


void displayuid(void)
{//send receive_ACK[] to PC
  unsigned char i;
  for(i=0;i<4;i++) //send command
  UART_Send_Byte(old_id[i]);
  Serial.println();
}


//*********** end *************

1 个答案:

答案 0 :(得分:0)

您的阅读器模块包含NXP PN532 NFC传输模块IC。您当前使用以下命令轮询标记:

tag = { 0x00, 0x00, 0xFF, 0x04, 0xFC, 0xD4, 0x4A, 0x01, 0x00, 0xE1, 0x00};

此命令是带有参数的InListPassiveTarget命令(命令代码D4 4A

  • 最大初始化标签数(MaxTg)= 1(0x01)和
  • 标签协议类型(BrTy)= ISO / IEC 14443A,速率为106 kbps(0x00)。

因此,您只能检测说明ISO / IEC 14443-3中定义的完整A型协议的标签(包括防冲突)。例如,这种标签是

  • NFC论坛类型2标签,
  • 使用Type A协议变体
  • 的NFC论坛类型4标签
  • 恩智浦MIFARE Ultralight / Classic / DESFire / NTAG,
  • 恩智浦NTAG,
  • 英飞凌my-D,
  • Kovio 2K,
  • 可能还有其他人。

Whiztags包含Topaz 512芯片(NFC论坛类型1标签)。此标记类型仅部分实现ISO / IEC 14443类型A(不支持防冲突机制)。因此,上述轮询命令将不会枚举此类标记。相反,您需要将BrTy参数切换为“106 kbps的Innovision Jewel标签”(0x04)。修改后的命令(包括更新校验和字节)如下所示:

tag = { 0x00, 0x00, 0xFF, 0x04, 0xFC, 0xD4, 0x4A, 0x01, 0x04, 0xDD, 0x00};

您可以在PN532 user manual

中找到更多详细信息