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libnfc-devel-1.4.2-1.fc14.i686.rpm

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<h1>nfc-relay.c</h1>  </div>
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<a href="nfc-relay_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*-</span>
<a name="l00002"></a>00002 <span class="comment"> * Public platform independent Near Field Communication (NFC) library examples</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2009, Roel Verdult</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2010, Romuald Conty</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00008"></a>00008 <span class="comment"> * modification, are permitted provided that the following conditions are met:</span>
<a name="l00009"></a>00009 <span class="comment"> *  1) Redistributions of source code must retain the above copyright notice,</span>
<a name="l00010"></a>00010 <span class="comment"> *  this list of conditions and the following disclaimer. </span>
<a name="l00011"></a>00011 <span class="comment"> *  2 )Redistributions in binary form must reproduce the above copyright</span>
<a name="l00012"></a>00012 <span class="comment"> *  notice, this list of conditions and the following disclaimer in the</span>
<a name="l00013"></a>00013 <span class="comment"> *  documentation and/or other materials provided with the distribution.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot;</span>
<a name="l00016"></a>00016 <span class="comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
<a name="l00017"></a>00017 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
<a name="l00018"></a>00018 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE</span>
<a name="l00019"></a>00019 <span class="comment"> * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
<a name="l00020"></a>00020 <span class="comment"> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span>
<a name="l00021"></a>00021 <span class="comment"> * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span>
<a name="l00022"></a>00022 <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span>
<a name="l00023"></a>00023 <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span>
<a name="l00024"></a>00024 <span class="comment"> * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span>
<a name="l00025"></a>00025 <span class="comment"> * POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00026"></a>00026 <span class="comment"> * </span>
<a name="l00027"></a>00027 <span class="comment"> * Note that this license only applies on the examples, NFC library itself is under LGPL</span>
<a name="l00028"></a>00028 <span class="comment"> *</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030 
<a name="l00036"></a>00036 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#  include &quot;config.h&quot;</span>
<a name="l00038"></a>00038 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_CONFIG_H */</span>
<a name="l00039"></a>00039 
<a name="l00040"></a>00040 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include &lt;stdint.h&gt;</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include &lt;signal.h&gt;</span>
<a name="l00045"></a>00045 
<a name="l00046"></a>00046 <span class="preprocessor">#include &lt;nfc/nfc.h&gt;</span>
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="preprocessor">#include &lt;nfc/nfc-messages.h&gt;</span>
<a name="l00049"></a>00049 <span class="preprocessor">#include &quot;<a class="code" href="nfc-utils_8h.html" title="Provide some examples shared functions like print, parity calculation, options parsing.">nfc-utils.h</a>&quot;</span>
<a name="l00050"></a>00050 
<a name="l00051"></a>00051 <span class="preprocessor">#define MAX_FRAME_LEN 264</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor">#define MAX_DEVICE_COUNT 2</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span>
<a name="l00054"></a>00054 <span class="keyword">static</span> byte_t abtReaderRx[MAX_FRAME_LEN];
<a name="l00055"></a>00055 <span class="keyword">static</span> byte_t abtReaderRxPar[MAX_FRAME_LEN];
<a name="l00056"></a>00056 <span class="keyword">static</span> <span class="keywordtype">size_t</span> szReaderRxBits;
<a name="l00057"></a>00057 <span class="keyword">static</span> byte_t abtTagRx[MAX_FRAME_LEN];
<a name="l00058"></a>00058 <span class="keyword">static</span> byte_t abtTagRxPar[MAX_FRAME_LEN];
<a name="l00059"></a>00059 <span class="keyword">static</span> <span class="keywordtype">size_t</span> szTagRxBits;
<a name="l00060"></a>00060 <span class="keyword">static</span> <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pndReader;
<a name="l00061"></a>00061 <span class="keyword">static</span> <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pndTag;
<a name="l00062"></a>00062 <span class="keyword">static</span> <span class="keywordtype">bool</span> quitting = <span class="keyword">false</span>;
<a name="l00063"></a>00063 
<a name="l00064"></a>00064 <span class="keywordtype">void</span>
<a name="l00065"></a>00065 intr_hdlr (<span class="keywordtype">void</span>)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067   printf (<span class="stringliteral">&quot;\nQuitting...\n&quot;</span>);
<a name="l00068"></a>00068   quitting = <span class="keyword">true</span>;
<a name="l00069"></a>00069   <span class="keywordflow">return</span>;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 
<a name="l00072"></a>00072 <span class="keywordtype">void</span>
<a name="l00073"></a>00073 print_usage (<span class="keywordtype">char</span> *argv[])
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075   printf (<span class="stringliteral">&quot;Usage: %s [OPTIONS]\n&quot;</span>, argv[0]);
<a name="l00076"></a>00076   printf (<span class="stringliteral">&quot;Options:\n&quot;</span>);
<a name="l00077"></a>00077   printf (<span class="stringliteral">&quot;\t-h\tHelp. Print this message.\n&quot;</span>);
<a name="l00078"></a>00078   printf (<span class="stringliteral">&quot;\t-q\tQuiet mode. Suppress output of READER and EMULATOR data (improves timing).\n&quot;</span>);
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080 
<a name="l00081"></a>00081 <span class="keywordtype">int</span>
<a name="l00082"></a>00082 main (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[])
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084   <span class="keywordtype">int</span>     arg;
<a name="l00085"></a>00085   <span class="keywordtype">bool</span>    quiet_output = <span class="keyword">false</span>;
<a name="l00086"></a>00086   <span class="keywordtype">size_t</span>  szFound;
<a name="l00087"></a>00087   <a class="code" href="structnfc__device__desc__t.html" title="NFC device description.">nfc_device_desc_t</a> *pnddDevices;
<a name="l00088"></a>00088   <span class="keyword">const</span> <span class="keywordtype">char</span> *acLibnfcVersion = <a class="code" href="nfc_8c.html#aa48f27c0f93d6508ad9a5ae01ab054d4" title="Returns the library version.">nfc_version</a> ();
<a name="l00089"></a>00089 
<a name="l00090"></a>00090   <span class="comment">// Get commandline options</span>
<a name="l00091"></a>00091   <span class="keywordflow">for</span> (arg = 1; arg &lt; argc; arg++) {
<a name="l00092"></a>00092     <span class="keywordflow">if</span> (0 == strcmp (argv[arg], <span class="stringliteral">&quot;-h&quot;</span>)) {
<a name="l00093"></a>00093       print_usage (argv);
<a name="l00094"></a>00094       <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00095"></a>00095     } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (0 == strcmp (argv[arg], <span class="stringliteral">&quot;-q&quot;</span>)) {
<a name="l00096"></a>00096       quiet_output = <span class="keyword">true</span>;
<a name="l00097"></a>00097     } <span class="keywordflow">else</span> {
<a name="l00098"></a>00098       ERR (<span class="stringliteral">&quot;%s is not supported option.&quot;</span>, argv[arg]);
<a name="l00099"></a>00099       print_usage (argv);
<a name="l00100"></a>00100       <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00101"></a>00101     }
<a name="l00102"></a>00102   }
<a name="l00103"></a>00103 
<a name="l00104"></a>00104   <span class="comment">// Display libnfc version</span>
<a name="l00105"></a>00105   printf (<span class="stringliteral">&quot;%s use libnfc %s\n&quot;</span>, argv[0], acLibnfcVersion);
<a name="l00106"></a>00106 
<a name="l00107"></a>00107 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00108"></a>00108 <span class="preprocessor"></span>  signal (SIGINT, (<span class="keywordtype">void</span> (__cdecl *) (<span class="keywordtype">int</span>)) intr_hdlr);
<a name="l00109"></a>00109 <span class="preprocessor">#else</span>
<a name="l00110"></a>00110 <span class="preprocessor"></span>  signal (SIGINT, (<span class="keywordtype">void</span> (*)()) intr_hdlr);
<a name="l00111"></a>00111 <span class="preprocessor">#endif</span>
<a name="l00112"></a>00112 <span class="preprocessor"></span>
<a name="l00113"></a>00113   <span class="comment">// Allocate memory to put the result of available devices listing</span>
<a name="l00114"></a>00114   <span class="keywordflow">if</span> (!(pnddDevices = malloc (MAX_DEVICE_COUNT * <span class="keyword">sizeof</span> (*pnddDevices)))) {
<a name="l00115"></a>00115     fprintf (stderr, <span class="stringliteral">&quot;malloc() failed\n&quot;</span>);
<a name="l00116"></a>00116     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00117"></a>00117   }
<a name="l00118"></a>00118   <span class="comment">// List available devices</span>
<a name="l00119"></a>00119   <a class="code" href="nfc_8c.html#a9073e8bf5089392979b187758f2cd7f9" title="Probe for discoverable supported devices (ie. only available for some drivers)">nfc_list_devices</a> (pnddDevices, MAX_DEVICE_COUNT, &amp;szFound);
<a name="l00120"></a>00120 
<a name="l00121"></a>00121   <span class="keywordflow">if</span> (szFound &lt; 2) {
<a name="l00122"></a>00122     ERR (<span class="stringliteral">&quot;%zd device found but two connected devices are needed to relay NFC.&quot;</span>, szFound);
<a name="l00123"></a>00123     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00124"></a>00124   }
<a name="l00125"></a>00125   <span class="comment">// Try to open the NFC emulator device</span>
<a name="l00126"></a>00126   pndTag = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (&amp;(pnddDevices[0]));
<a name="l00127"></a>00127   <span class="keywordflow">if</span> (pndTag == NULL) {
<a name="l00128"></a>00128     printf (<span class="stringliteral">&quot;Error connecting NFC emulator device\n&quot;</span>);
<a name="l00129"></a>00129     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00130"></a>00130   }
<a name="l00131"></a>00131 
<a name="l00132"></a>00132   printf (<span class="stringliteral">&quot;Hint: tag &lt;---&gt; initiator (relay) &lt;---&gt; target (relay) &lt;---&gt; original reader\n\n&quot;</span>);
<a name="l00133"></a>00133 
<a name="l00134"></a>00134   printf (<span class="stringliteral">&quot;Connected to the NFC emulator device: %s\n&quot;</span>, pndTag-&gt;<a class="code" href="structnfc__device__t.html#a3933f0bea196fedca0345a7f940dc85b">acName</a>);
<a name="l00135"></a>00135   printf (<span class="stringliteral">&quot;[+] Try to break out the auto-emulation, this requires a second reader!\n&quot;</span>);
<a name="l00136"></a>00136   printf (<span class="stringliteral">&quot;[+] To do this, please send any command after the anti-collision\n&quot;</span>);
<a name="l00137"></a>00137   printf (<span class="stringliteral">&quot;[+] For example, send a RATS command or use the \&quot;nfc-anticol\&quot; tool\n&quot;</span>);
<a name="l00138"></a>00138 
<a name="l00139"></a>00139   <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt = {
<a name="l00140"></a>00140     .nm.nmt = NMT_ISO14443A,
<a name="l00141"></a>00141     .nm.nbr = NBR_UNDEFINED,
<a name="l00142"></a>00142     .nti.nai.abtAtqa = { 0x04, 0x00 },
<a name="l00143"></a>00143     .nti.nai.abtUid = { 0xde, 0xad, 0xbe, 0xef },
<a name="l00144"></a>00144     .nti.nai.btSak = 0x20,
<a name="l00145"></a>00145     .nti.nai.szUidLen = 4,
<a name="l00146"></a>00146     .nti.nai.szAtsLen = 0,
<a name="l00147"></a>00147   };
<a name="l00148"></a>00148 
<a name="l00149"></a>00149   <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a2e021479b99fbd60cf5f037b2daa3007" title="Initialize NFC device as an emulated tag.">nfc_target_init</a> (pndTag, &amp;nt, abtReaderRx, &amp;szReaderRxBits)) {
<a name="l00150"></a>00150     ERR (<span class="stringliteral">&quot;%s&quot;</span>, <span class="stringliteral">&quot;Initialization of NFC emulator failed&quot;</span>);
<a name="l00151"></a>00151     <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pndTag);
<a name="l00152"></a>00152     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00153"></a>00153   }
<a name="l00154"></a>00154   printf (<span class="stringliteral">&quot;%s&quot;</span>, <span class="stringliteral">&quot;Configuring emulator settings...&quot;</span>);
<a name="l00155"></a>00155   <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndTag, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea34588e4870fcc10476151e27e8e97a74">NDO_HANDLE_CRC</a>, <span class="keyword">false</span>) ||
<a name="l00156"></a>00156       !<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndTag, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea7c1f6097b2d2a1670f580de332c41596">NDO_HANDLE_PARITY</a>, <span class="keyword">false</span>) || !<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndTag, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311eaf11f5510dd7430ca8a1b7fe58c67273b">NDO_ACCEPT_INVALID_FRAMES</a>, <span class="keyword">true</span>)) {
<a name="l00157"></a>00157     <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pndTag, <span class="stringliteral">&quot;nfc_configure&quot;</span>);
<a name="l00158"></a>00158     exit (EXIT_FAILURE);
<a name="l00159"></a>00159   }
<a name="l00160"></a>00160   printf (<span class="stringliteral">&quot;%s&quot;</span>, <span class="stringliteral">&quot;Done, emulated tag is initialized&quot;</span>);
<a name="l00161"></a>00161 
<a name="l00162"></a>00162   <span class="comment">// Try to open the NFC reader</span>
<a name="l00163"></a>00163   pndReader = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (&amp;(pnddDevices[1]));
<a name="l00164"></a>00164 
<a name="l00165"></a>00165   printf (<span class="stringliteral">&quot;Connected to the NFC reader device: %s&quot;</span>, pndReader-&gt;<a class="code" href="structnfc__device__t.html#a3933f0bea196fedca0345a7f940dc85b">acName</a>);
<a name="l00166"></a>00166   printf (<span class="stringliteral">&quot;%s&quot;</span>, <span class="stringliteral">&quot;Configuring NFC reader settings...&quot;</span>);
<a name="l00167"></a>00167   <a class="code" href="nfc_8c.html#a1c05aadcf1b30e8d69969dfd74a793f2" title="Initialize NFC device as initiator (reader)">nfc_initiator_init</a> (pndReader);
<a name="l00168"></a>00168   <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndReader, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea34588e4870fcc10476151e27e8e97a74">NDO_HANDLE_CRC</a>, <span class="keyword">false</span>) ||
<a name="l00169"></a>00169       !<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndReader, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea7c1f6097b2d2a1670f580de332c41596">NDO_HANDLE_PARITY</a>, <span class="keyword">false</span>) ||
<a name="l00170"></a>00170       !<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndReader, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311eaf11f5510dd7430ca8a1b7fe58c67273b">NDO_ACCEPT_INVALID_FRAMES</a>, <span class="keyword">true</span>)) {
<a name="l00171"></a>00171     <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pndReader, <span class="stringliteral">&quot;nfc_configure&quot;</span>);
<a name="l00172"></a>00172     exit (EXIT_FAILURE);
<a name="l00173"></a>00173   }
<a name="l00174"></a>00174   printf (<span class="stringliteral">&quot;%s&quot;</span>, <span class="stringliteral">&quot;Done, relaying frames now!&quot;</span>);
<a name="l00175"></a>00175 
<a name="l00176"></a>00176   <span class="keywordflow">while</span> (!quitting) {
<a name="l00177"></a>00177     <span class="comment">// Test if we received a frame from the reader</span>
<a name="l00178"></a>00178     <span class="keywordflow">if</span> (<a class="code" href="nfc_8c.html#a655c79686ca6d03e788cd81eed3c69f1" title="Receive bit-frames.">nfc_target_receive_bits</a> (pndTag, abtReaderRx, &amp;szReaderRxBits, abtReaderRxPar)) {
<a name="l00179"></a>00179       <span class="comment">// Drop down the field before sending a REQA command and start a new session</span>
<a name="l00180"></a>00180       <span class="keywordflow">if</span> (szReaderRxBits == 7 &amp;&amp; abtReaderRx[0] == 0x26) {
<a name="l00181"></a>00181         <span class="comment">// Drop down field for a very short time (original tag will reboot)</span>
<a name="l00182"></a>00182         <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndReader, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea932832c243c9448924de6e21aa622d07">NDO_ACTIVATE_FIELD</a>, <span class="keyword">false</span>)) {
<a name="l00183"></a>00183           <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pndReader, <span class="stringliteral">&quot;nfc_configure&quot;</span>);
<a name="l00184"></a>00184           exit (EXIT_FAILURE);
<a name="l00185"></a>00185         }
<a name="l00186"></a>00186         <span class="keywordflow">if</span> (!quiet_output)
<a name="l00187"></a>00187           printf (<span class="stringliteral">&quot;\n&quot;</span>);
<a name="l00188"></a>00188         <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pndReader, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea932832c243c9448924de6e21aa622d07">NDO_ACTIVATE_FIELD</a>, <span class="keyword">true</span>)) {
<a name="l00189"></a>00189           <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pndReader, <span class="stringliteral">&quot;nfc_configure&quot;</span>);
<a name="l00190"></a>00190           exit (EXIT_FAILURE);
<a name="l00191"></a>00191         }
<a name="l00192"></a>00192       }
<a name="l00193"></a>00193       <span class="comment">// Print the reader frame to the screen</span>
<a name="l00194"></a>00194       <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00195"></a>00195         printf (<span class="stringliteral">&quot;R: &quot;</span>);
<a name="l00196"></a>00196         print_hex_par (abtReaderRx, szReaderRxBits, abtReaderRxPar);
<a name="l00197"></a>00197       }
<a name="l00198"></a>00198       <span class="comment">// Forward the frame to the original tag</span>
<a name="l00199"></a>00199       <span class="keywordflow">if</span> (<a class="code" href="nfc_8c.html#aa20007e4440af8d489dc6745f0219d4c" title="Transceive raw bit-frames to a target.">nfc_initiator_transceive_bits</a>
<a name="l00200"></a>00200           (pndReader, abtReaderRx, szReaderRxBits, abtReaderRxPar, abtTagRx, &amp;szTagRxBits, abtTagRxPar)) {
<a name="l00201"></a>00201         <span class="comment">// Redirect the answer back to the reader</span>
<a name="l00202"></a>00202         <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a13e7015472f2385e1f3a46ddfe95f980" title="Send raw bit-frames.">nfc_target_send_bits</a> (pndTag, abtTagRx, szTagRxBits, abtTagRxPar)) {
<a name="l00203"></a>00203           <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a> (pndTag, <span class="stringliteral">&quot;nfc_target_send_bits&quot;</span>);
<a name="l00204"></a>00204           exit (EXIT_FAILURE);
<a name="l00205"></a>00205         }
<a name="l00206"></a>00206         <span class="comment">// Print the tag frame to the screen</span>
<a name="l00207"></a>00207         <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00208"></a>00208           printf (<span class="stringliteral">&quot;T: &quot;</span>);
<a name="l00209"></a>00209           print_hex_par (abtTagRx, szTagRxBits, abtTagRxPar);
<a name="l00210"></a>00210         }
<a name="l00211"></a>00211       }
<a name="l00212"></a>00212     }
<a name="l00213"></a>00213   }
<a name="l00214"></a>00214 
<a name="l00215"></a>00215   <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pndTag);
<a name="l00216"></a>00216   <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pndReader);
<a name="l00217"></a>00217   exit (EXIT_SUCCESS);
<a name="l00218"></a>00218 }
</pre></div></div>
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