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<h1>nfc-dep-target.c</h1> </div>
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<a href="nfc-dep-target_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 "AS IS"</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 "config.h"</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 <stdio.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="preprocessor">#include <nfc/nfc.h></span>
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="preprocessor">#include "<a class="code" href="nfc-utils_8h.html" title="Provide some examples shared functions like print, parity calculation, options parsing.">nfc-utils.h</a>"</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="preprocessor">#define MAX_FRAME_LEN 264</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00049"></a>00049 <span class="keywordtype">int</span>
<a name="l00050"></a>00050 main (<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span> *argv[])
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 byte_t abtRx[MAX_FRAME_LEN];
<a name="l00053"></a>00053 <span class="keywordtype">size_t</span> szRx;
<a name="l00054"></a>00054 <span class="keywordtype">size_t</span> szDeviceFound;
<a name="l00055"></a>00055 byte_t abtTx[] = <span class="stringliteral">"Hello Mars!"</span>;
<a name="l00056"></a>00056 <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pnd;
<a name="l00057"></a>00057 <span class="preprocessor"> #define MAX_DEVICE_COUNT 2</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span> <a class="code" href="structnfc__device__desc__t.html" title="NFC device description.">nfc_device_desc_t</a> pnddDevices[MAX_DEVICE_COUNT];
<a name="l00059"></a>00059 <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, &szDeviceFound);
<a name="l00060"></a>00060 <span class="comment">// Little hack to allow using nfc-dep-initiator & nfc-dep-target from</span>
<a name="l00061"></a>00061 <span class="comment">// the same machine: if there is more than one readers connected</span>
<a name="l00062"></a>00062 <span class="comment">// nfc-dep-target will connect to the second reader</span>
<a name="l00063"></a>00063 <span class="comment">// (we hope they're always detected in the same order)</span>
<a name="l00064"></a>00064 <span class="keywordflow">if</span> (szDeviceFound == 1) {
<a name="l00065"></a>00065 pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (&(pnddDevices[0]));
<a name="l00066"></a>00066 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (szDeviceFound > 1) {
<a name="l00067"></a>00067 pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (&(pnddDevices[1]));
<a name="l00068"></a>00068 } <span class="keywordflow">else</span> {
<a name="l00069"></a>00069 printf(<span class="stringliteral">"No device found."</span>);
<a name="l00070"></a>00070 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordflow">if</span> (argc > 1) {
<a name="l00074"></a>00074 printf (<span class="stringliteral">"Usage: %s\n"</span>, argv[0]);
<a name="l00075"></a>00075 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt = {
<a name="l00079"></a>00079 .nm.nmt = NMT_DEP,
<a name="l00080"></a>00080 .nm.nbr = NBR_UNDEFINED, <span class="comment">// Will be updated by nfc_target_init</span>
<a name="l00081"></a>00081 .nti.ndi.abtNFCID3 = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0x00, 0x00 },
<a name="l00082"></a>00082 .nti.ndi.szGB = 4,
<a name="l00083"></a>00083 .nti.ndi.abtGB = { 0x12, 0x34, 0x56, 0x78 },
<a name="l00084"></a>00084 <span class="comment">/* These bytes are not used by nfc_target_init: the chip will provide them automatically to the initiator */</span>
<a name="l00085"></a>00085 .nti.ndi.btDID = 0x00,
<a name="l00086"></a>00086 .nti.ndi.btBS = 0x00,
<a name="l00087"></a>00087 .nti.ndi.btBR = 0x00,
<a name="l00088"></a>00088 .nti.ndi.btTO = 0x00,
<a name="l00089"></a>00089 .nti.ndi.btPP = 0x01,
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordflow">if</span> (!pnd) {
<a name="l00093"></a>00093 printf(<span class="stringliteral">"Unable to connect to NFC device.\n"</span>);
<a name="l00094"></a>00094 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 printf (<span class="stringliteral">"Connected to NFC device: %s\n"</span>, pnd-><a class="code" href="structnfc__device__t.html#a3933f0bea196fedca0345a7f940dc85b">acName</a>);
<a name="l00097"></a>00097
<a name="l00098"></a>00098 printf (<span class="stringliteral">"NFC device will now act as: "</span>);
<a name="l00099"></a>00099 print_nfc_target (nt, <span class="keyword">false</span>);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 printf (<span class="stringliteral">"Waiting for initiator request...\n"</span>);
<a name="l00102"></a>00102 <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> (pnd, &nt, abtRx, &szRx)) {
<a name="l00103"></a>00103 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">"nfc_target_init"</span>);
<a name="l00104"></a>00104 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 printf(<span class="stringliteral">"Initiator request received. Waiting for data...\n"</span>);
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#aa2f4fac4826ea6a6e428af5e7b68fe4a" title="Receive bytes and APDU frames.">nfc_target_receive_bytes</a> (pnd, abtRx, &szRx)) {
<a name="l00109"></a>00109 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">"nfc_target_receive_bytes"</span>);
<a name="l00110"></a>00110 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 abtRx[szRx] = <span class="charliteral">'\0'</span>;
<a name="l00113"></a>00113 printf (<span class="stringliteral">"Received: %s\n"</span>, abtRx);
<a name="l00114"></a>00114
<a name="l00115"></a>00115 printf (<span class="stringliteral">"Sending: %s\n"</span>, abtTx);
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (!<a class="code" href="nfc_8c.html#af75f631996a44331f8b2e6ea9e56585d" title="Send bytes and APDU frames.">nfc_target_send_bytes</a> (pnd, abtTx, <span class="keyword">sizeof</span>(abtTx))) {
<a name="l00117"></a>00117 <a class="code" href="nfc_8c.html#a111b9182fc80b309b56009e9c6be7454" title="Display the PCD error a-la perror.">nfc_perror</a>(pnd, <span class="stringliteral">"nfc_target_send_bytes"</span>);
<a name="l00118"></a>00118 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 printf(<span class="stringliteral">"Data sent.\n"</span>);
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a> (pnd);
<a name="l00123"></a>00123 <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00124"></a>00124 }
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