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<h1>nfc-dep-initiator.c</h1>  </div>
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<a href="nfc-dep-initiator_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 // HAVE_CONFIG_H</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<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;string.h&gt;</span>
<a name="l00043"></a>00043 
<a name="l00044"></a>00044 <span class="preprocessor">#include &lt;nfc/nfc.h&gt;</span>
<a name="l00045"></a>00045 
<a name="l00046"></a>00046 <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="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="preprocessor">#define MAX_FRAME_LEN 264</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>
<a name="l00050"></a>00050 <span class="keywordtype">int</span>
<a name="l00051"></a>00051 main (<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span> *argv[])
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053   <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pnd;
<a name="l00054"></a>00054   <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt;
<a name="l00055"></a>00055   byte_t  abtRx[MAX_FRAME_LEN];
<a name="l00056"></a>00056   <span class="keywordtype">size_t</span>  szRx;
<a name="l00057"></a>00057   byte_t  abtTx[] = <span class="stringliteral">&quot;Hello World!&quot;</span>;
<a name="l00058"></a>00058 
<a name="l00059"></a>00059   <span class="keywordflow">if</span> (argc &gt; 1) {
<a name="l00060"></a>00060     printf (<span class="stringliteral">&quot;Usage: %s\n&quot;</span>, argv[0]);
<a name="l00061"></a>00061     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00062"></a>00062   }
<a name="l00063"></a>00063 
<a name="l00064"></a>00064   pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (NULL);
<a name="l00065"></a>00065   <span class="keywordflow">if</span> (!pnd) {
<a name="l00066"></a>00066     printf(<span class="stringliteral">&quot;Unable to connect to NFC device.\n&quot;</span>);
<a name="l00067"></a>00067     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00068"></a>00068   }
<a name="l00069"></a>00069   printf (<span class="stringliteral">&quot;Connected to NFC device: %s\n&quot;</span>, pnd-&gt;<a class="code" href="structnfc__device__t.html#a3933f0bea196fedca0345a7f940dc85b">acName</a>);
<a name="l00070"></a>00070 
<a name="l00071"></a>00071   <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a1c05aadcf1b30e8d69969dfd74a793f2" title="Initialize NFC device as initiator (reader)">nfc_initiator_init</a> (pnd)) {
<a name="l00072"></a>00072     <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">&quot;nfc_initiator_init&quot;</span>);
<a name="l00073"></a>00073     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00074"></a>00074   }
<a name="l00075"></a>00075 
<a name="l00076"></a>00076   <span class="keywordflow">if</span>(!<a class="code" href="nfc_8c.html#ae96adb1fa222b989f7118e373a0d01c9" title="Select a target and request active or passive mode for D.E.P. (Data Exchange Protocol)">nfc_initiator_select_dep_target</a> (pnd, NDM_PASSIVE, NBR_212, NULL, &amp;nt)) {
<a name="l00077"></a>00077     <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">&quot;nfc_initiator_select_dep_target&quot;</span>);
<a name="l00078"></a>00078     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00079"></a>00079   }
<a name="l00080"></a>00080   print_nfc_target (nt, <span class="keyword">false</span>);
<a name="l00081"></a>00081 
<a name="l00082"></a>00082   printf (<span class="stringliteral">&quot;Sending: %s\n&quot;</span>, abtTx);
<a name="l00083"></a>00083   <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#a9e32d7ad73ef60bb198a8f0d36da0890" title="Send data to target then retrieve data from target.">nfc_initiator_transceive_bytes</a> (pnd, abtTx, <span class="keyword">sizeof</span>(abtTx), abtRx, &amp;szRx)) {
<a name="l00084"></a>00084     <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">&quot;nfc_initiator_transceive_bytes&quot;</span>);
<a name="l00085"></a>00085     <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00086"></a>00086   }
<a name="l00087"></a>00087 
<a name="l00088"></a>00088   abtRx[szRx] = 0;
<a name="l00089"></a>00089   printf (<span class="stringliteral">&quot;Received: %s\n&quot;</span>, abtRx);
<a name="l00090"></a>00090 
<a name="l00091"></a>00091   nfc_initiator_deselect_target (pnd);
<a name="l00092"></a>00092   <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pnd);
<a name="l00093"></a>00093   <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00094"></a>00094 }
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