1

晚上好，

您的页面已经帮了很多忙，但是我在尝试格式化 NFC 标签时发现了问题，并且找不到与 NDEF 格式化标签相关的主题。

首先我必须说我是 NFC 技术的新手。

我购买了以下标签：http ://www.ti.com/product/RI-I16-112A-03/description

该芯片经过工厂测试，因此每个字节都已写入 0x00。

现在问题开始了：我将应用说明下载到标签： http ://www.ti.com/lit/an/sloa166a/sloa166a.pdf 并创建了一个android应用程序（下面的源代码）来写入内存，如图所示在图 12。当我使用 NXP-TagInfo 应用程序读出标签的内容时，内存看起来应该是这样。问题仍然是它在 NXP-TagInfo 中显示“没有 NFC 数据集存储”，而且它被发现为 NFC_TECH。如果我错了，请告诉我，但这表明该标签绝对不是 NDEF 格式的。

为了写入标签，我做了一些研究，因为它没有记录在应用笔记/数据表中，这是最让我困惑的地方。是否有任何文件指定可以使用或存在哪些字节标志？我使用 0x42 是因为我在这个论坛上看到过它——如果你想要源代码，请索取。

我的硬件：Sony Xperia S - Android 4.1.2 (Build-number: 6.2.B.1.96)
用 Eclipse 编译 - 目标 SDK= min SDK = API-level 16

最后是代码：

public class Nfc_activity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    TextView textView = new TextView(this);
    String result = "";
    textView.setTextSize(40);

    Intent intent = getIntent();
    Tag receivedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

    byte[] block0 = new byte[] {0x42,0x21,(byte)0x00,(byte)0xe1,0x40,0x20,0x01};
    byte[] block1 = new byte[] {0x42,0x21,(byte)0x01,0x03,0x0b,(byte)0xd1,0x01};

    byte[] block2 = new byte[] {0x42,0x21,(byte)0x02,0x07,0x55,0x01,0x74};
    byte[] block3 = new byte[] {0x42,0x21,(byte)0x03,0x69,0x2e,0x63,0x6f};
    byte[] block4 = new byte[] {0x42,0x21,(byte)0x04,0x6d,(byte)0xfe,(byte)0x00,(byte)0x00};

    for(int i=0; i<receivedTag.getId().length; i++) {
        result+= Integer.toHexString(receivedTag.getId()[i]&0xff)+':';
    }


    textView.setText(result);
    setContentView(textView);

    NfcV nvcv = NfcV.get(receivedTag);

    try {
        nvcv.connect();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {
        nvcv.transceive(block0);
    } catch (IOException e2) {
        // TODO Auto-generated catch block
        e2.printStackTrace();
    }

    try {
        nvcv.transceive(block1);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    try {
        nvcv.transceive(block2);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    try {
        nvcv.transceive(block3);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    try {
        nvcv.transceive(block4);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    try {
        nvcv.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}


编辑： 在这里您可以看到 NXP 的标签信息：

<?xml version="1.0" encoding="UTF-8"?>
<scan>
    <version>3.0</version>
    <date>2014-09-20 14:19:38</date>
    <title>Texas Instruments Tag-it HF-I Plus (inlay) tag</title>
    <uid nxp="false">3C:A7:4C:2B:00:00:07:E0</uid>
    <hasndef>false</hasndef>
    <section>
        <subsection title="IC manufacturer">
            <block type="text">
    <content>Texas Instruments</content>
</block>
        </subsection>
        <subsection title="IC type">
            <block type="text">
    <content>Tag-it HF-I Plus (inlay)</content>
</block>
        </subsection>
    </section>
    <section>
        <subsection title="No NFC data set storage">
            <block type="text">
    <content></content>
</block>
        </subsection>
    </section>
    <section>
        <subsection title="Memory size">
            <block type="text">
    <content>256 bytes
► 64 blocks, with 4 bytes per block</content>
</block>
        </subsection>
        <subsection title="IC detailed information">
            <block type="text">
    <content>Supported read commands:
► Single Block Read
► Multiple Block Read
► Get System Information
AFI supported
DSFID supported
IC reference value: 0x8B</content>
</block>
        </subsection>
    </section>
    <section>
        <subsection title="Technologies supported">
            <block type="text">
    <content>ISO/IEC 15693-3 compatible
ISO/IEC 15693-2 compatible</content>
</block>
        </subsection>
        <subsection title="Android technology information">
            <block type="text">
    <content>Tag description:
► TAG: Tech [android.nfc.tech.NfcV]
android.nfc.tech.NfcV
► Maximum transceive length: 253 bytes
<hexoutput>MIFARE Classic support present in Android</hexoutput></content>
</block>
        </subsection>
        <subsection title="Detailed protocol information">
            <block type="text">
    <content>ID: E0:07:00:00:2B:4C:A7:3C
AFI: 0x00
DSFID: 0x00</content>
</block>
        </subsection>
        <subsection title="Memory content">
            <block>
    <address>0</address>
    <data access=".">E1 40 20 01</data>
</block>
<block>
    <address>1</address>
    <data access=".">03 0B D1 01</data>
</block>
<block>
    <address>2</address>
    <data access=".">07 55 01 74</data>
</block>
<block>
    <address>3</address>
    <data access=".">69 2E 63 6F</data>
</block>
<block>
    <address>4</address>
    <data access=".">6D FE 00 00</data>
</block>
<block>
    <address>5</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>6</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>7</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>8</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>9</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>10</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>11</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>12</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>13</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>14</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>15</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>16</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>17</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>18</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>19</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>20</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>21</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>22</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>23</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>24</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>25</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>26</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>27</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>28</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>29</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>30</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>31</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>32</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>33</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>34</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>35</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>36</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>37</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>38</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>39</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>40</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>41</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>42</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>43</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>44</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>45</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>46</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>47</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>48</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>49</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>50</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>51</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>52</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>53</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>54</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>55</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>56</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>57</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>58</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>59</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>60</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>61</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>62</address>
    <data access=".">00 00 00 00</data>
</block>
<block>
    <address>63</address>
    <data access=".">00 00 00 00</data>
</block>
<block type="text">
    <content>
  x:user locked, *:factory locked, .:unlocked</content>
</block>
        </subsection>
    </section>
</scan>

谢谢你的回复。
迈克尔

4

1 回答 1

0

使用 NfcV (ISO/IEC 15693) 标签作为 NDEF 标签仍然没有标准化。因此，设备制造商必须将对标签制造商的专有定义（同时它们在大多数部分相似/相同）的支持集成到他们的 Android 版本中。

您正在使用的设备（与该 Android 版本结合使用）不支持 NfcV 标签上的 NDEF 。因此，您不能以您的 Android 设备将检测到 NDEF 消息的方式格式化标签。

1）实际上这并不完全正确。该器件很可能在 NXP 的 ICODE 标签上支持 NDEF（使用与您在 TI 标签上使用的完全相同的格式）。不幸的是，通过测试标签序列号中的制造商指示是否等于 0x04 (= NXP)，这种支持仅限于 NXP 标签。

于 2014-10-17T05:22:33.763 回答