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<h1>nfc-emulate-forum-tag4.c</h1> </div>
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<a href="nfc-emulate-forum-tag4_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) 2010, Roel Verdult, Romuald Conty</span>
<a name="l00005"></a>00005 <span class="comment"> * </span>
<a name="l00006"></a>00006 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00007"></a>00007 <span class="comment"> * modification, are permitted provided that the following conditions are met:</span>
<a name="l00008"></a>00008 <span class="comment"> * 1) Redistributions of source code must retain the above copyright notice,</span>
<a name="l00009"></a>00009 <span class="comment"> * this list of conditions and the following disclaimer. </span>
<a name="l00010"></a>00010 <span class="comment"> * 2 )Redistributions in binary form must reproduce the above copyright</span>
<a name="l00011"></a>00011 <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span>
<a name="l00012"></a>00012 <span class="comment"> * documentation and/or other materials provided with the distribution.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</span>
<a name="l00015"></a>00015 <span class="comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
<a name="l00016"></a>00016 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
<a name="l00017"></a>00017 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE</span>
<a name="l00018"></a>00018 <span class="comment"> * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
<a name="l00019"></a>00019 <span class="comment"> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span>
<a name="l00020"></a>00020 <span class="comment"> * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span>
<a name="l00021"></a>00021 <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span>
<a name="l00022"></a>00022 <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span>
<a name="l00023"></a>00023 <span class="comment"> * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span>
<a name="l00024"></a>00024 <span class="comment"> * POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00025"></a>00025 <span class="comment"> * </span>
<a name="l00026"></a>00026 <span class="comment"> * Note that this license only applies on the examples, NFC library itself is under LGPL</span>
<a name="l00027"></a>00027 <span class="comment"> *</span>
<a name="l00028"></a>00028 <span class="comment"> */</span>
<a name="l00029"></a>00029
<a name="l00035"></a>00035 <span class="comment">// Notes & differences with nfc-emulate-tag:</span>
<a name="l00036"></a>00036 <span class="comment">// - This example only works with PN532 because it relies on</span>
<a name="l00037"></a>00037 <span class="comment">// its internal handling of ISO14443-4 specificities.</span>
<a name="l00038"></a>00038 <span class="comment">// - Thanks to this internal handling & injection of WTX frames,</span>
<a name="l00039"></a>00039 <span class="comment">// this example works on readers very strict on timing</span>
<a name="l00040"></a>00040 <span class="comment">// - This example expects a hardcoded list of commands and</span>
<a name="l00041"></a>00041 <span class="comment">// more precisely the commands sent by a Nokia NFC when</span>
<a name="l00042"></a>00042 <span class="comment">// discovering a NFC-Forum tag type4:</span>
<a name="l00043"></a>00043 <span class="comment">// * Anticoll & RATS</span>
<a name="l00044"></a>00044 <span class="comment">// * App Select by name "e103e103e103"</span>
<a name="l00045"></a>00045 <span class="comment">// * App Select by name "e103e103e103"</span>
<a name="l00046"></a>00046 <span class="comment">// * App Select by name "D2760000850100"</span>
<a name="l00047"></a>00047 <span class="comment">// * Select CC</span>
<a name="l00048"></a>00048 <span class="comment">// * ReadBinary CC</span>
<a name="l00049"></a>00049 <span class="comment">// * Select NDEF</span>
<a name="l00050"></a>00050 <span class="comment">// * Read first 2 NDEF bytes</span>
<a name="l00051"></a>00051 <span class="comment">// * Read remaining of NDEF file</span>
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor"># include "config.h"</span>
<a name="l00055"></a>00055 <span class="preprocessor">#endif // HAVE_CONFIG_H</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span>
<a name="l00057"></a>00057 <span class="preprocessor">#include <stdio.h></span>
<a name="l00058"></a>00058 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00059"></a>00059 <span class="preprocessor">#include <stddef.h></span>
<a name="l00060"></a>00060 <span class="preprocessor">#include <stdint.h></span>
<a name="l00061"></a>00061 <span class="preprocessor">#include <string.h></span>
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="preprocessor">#include <nfc/nfc.h></span>
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="preprocessor">#include <nfc/nfc-messages.h></span>
<a name="l00066"></a>00066 <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="l00067"></a>00067
<a name="l00068"></a>00068 <span class="preprocessor">#define MAX_FRAME_LEN 264</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span>
<a name="l00070"></a>00070 <span class="keyword">static</span> byte_t abtRx[MAX_FRAME_LEN];
<a name="l00071"></a>00071 <span class="keyword">static</span> <span class="keywordtype">size_t</span> szRx;
<a name="l00072"></a>00072 <span class="keyword">static</span> <a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a> *pnd;
<a name="l00073"></a>00073 <span class="keyword">static</span> <span class="keywordtype">bool</span> quiet_output = <span class="keyword">false</span>;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="preprocessor">#define SYMBOL_PARAM_fISO14443_4_PICC 0x20</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span>
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> send_bytes (<span class="keyword">const</span> byte_t * pbtTx, <span class="keyword">const</span> <span class="keywordtype">size_t</span> szTx)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <span class="comment">// Show transmitted command</span>
<a name="l00080"></a>00080 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00081"></a>00081 printf (<span class="stringliteral">"Sent data: "</span>);
<a name="l00082"></a>00082 print_hex (pbtTx, szTx);
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// Transmit the command bytes</span>
<a name="l00086"></a>00086 <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, pbtTx, szTx)) {
<a name="l00087"></a>00087 <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="l00088"></a>00088 exit(EXIT_FAILURE);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 <span class="comment">// Succesful transfer</span>
<a name="l00091"></a>00091 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordtype">bool</span> receive_bytes (<span class="keywordtype">void</span>)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <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="l00097"></a>00097 <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="l00098"></a>00098 exit(EXIT_FAILURE);
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// Show received answer</span>
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00103"></a>00103 printf (<span class="stringliteral">"Received data: "</span>);
<a name="l00104"></a>00104 print_hex (abtRx, szRx);
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 <span class="comment">// Succesful transfer</span>
<a name="l00107"></a>00107 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordtype">int</span>
<a name="l00111"></a>00111 main (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[])
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="comment">// Try to open the NFC reader</span>
<a name="l00114"></a>00114 pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (NULL);
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (pnd == NULL) {
<a name="l00117"></a>00117 ERR(<span class="stringliteral">"Unable to connect to NFC device"</span>);
<a name="l00118"></a>00118 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00121"></a>00121 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="l00122"></a>00122 printf (<span class="stringliteral">"Emulating NDEF tag now, please touch it with a second NFC device\n"</span>);
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt = {
<a name="l00125"></a>00125 .nm.nmt = NMT_ISO14443A,
<a name="l00126"></a>00126 .nm.nbr = NBR_UNDEFINED, <span class="comment">// Will be updated by nfc_target_init()</span>
<a name="l00127"></a>00127 .nti.nai.abtAtqa = { 0x00, 0x04 },
<a name="l00128"></a>00128 .nti.nai.abtUid = { 0x08, 0x00, 0xb0, 0x0b },
<a name="l00129"></a>00129 .nti.nai.btSak = 0x20,
<a name="l00130"></a>00130 .nti.nai.szUidLen = 4,
<a name="l00131"></a>00131 .nti.nai.szAtsLen = 0,
<a name="l00132"></a>00132 };
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <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="l00135"></a>00135 <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="l00136"></a>00136 ERR(<span class="stringliteral">"Could not come out of auto-emulation, no command was received"</span>);
<a name="l00137"></a>00137 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00141"></a>00141 printf (<span class="stringliteral">"Received data: "</span>);
<a name="l00142"></a>00142 print_hex (abtRx, szRx);
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">//Receiving data: e0 40</span>
<a name="l00146"></a>00146 <span class="comment">//= RATS, FSD=48</span>
<a name="l00147"></a>00147 <span class="comment">//Actually PN532 already sent back the ATS so nothing to send now</span>
<a name="l00148"></a>00148 receive_bytes();
<a name="l00149"></a>00149 <span class="comment">//Receiving data: 00 a4 04 00 06 e1 03 e1 03 e1 03</span>
<a name="l00150"></a>00150 <span class="comment">//= App Select by name "e103e103e103"</span>
<a name="l00151"></a>00151 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x6a\x87"</span>,2);
<a name="l00152"></a>00152 receive_bytes();
<a name="l00153"></a>00153 <span class="comment">//Receiving data: 00 a4 04 00 06 e1 03 e1 03 e1 03</span>
<a name="l00154"></a>00154 <span class="comment">//= App Select by name "e103e103e103"</span>
<a name="l00155"></a>00155 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x6a\x87"</span>,2);
<a name="l00156"></a>00156 receive_bytes();
<a name="l00157"></a>00157 <span class="comment">//Receiving data: 00 a4 04 00 07 d2 76 00 00 85 01 00</span>
<a name="l00158"></a>00158 <span class="comment">//= App Select by name "D2760000850100"</span>
<a name="l00159"></a>00159 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x90\x00"</span>,2);
<a name="l00160"></a>00160 receive_bytes();
<a name="l00161"></a>00161 <span class="comment">//Receiving data: 00 a4 00 00 02 e1 03</span>
<a name="l00162"></a>00162 <span class="comment">//= Select CC</span>
<a name="l00163"></a>00163 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x90\x00"</span>,2);
<a name="l00164"></a>00164 receive_bytes();
<a name="l00165"></a>00165 <span class="comment">//Receiving data: 00 b0 00 00 0f</span>
<a name="l00166"></a>00166 <span class="comment">//= ReadBinary CC</span>
<a name="l00167"></a>00167 <span class="comment">//We send CC + OK</span>
<a name="l00168"></a>00168 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x00\x0f\x10\x00\x3b\x00\x34\x04\x06\xe1\x04\x0e\xe0\x00\x00\x90\x00"</span>,17);
<a name="l00169"></a>00169 receive_bytes();
<a name="l00170"></a>00170 <span class="comment">//Receiving data: 00 a4 00 00 02 e1 04</span>
<a name="l00171"></a>00171 <span class="comment">//= Select NDEF</span>
<a name="l00172"></a>00172 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x90\x00"</span>,2);
<a name="l00173"></a>00173 receive_bytes();
<a name="l00174"></a>00174 <span class="comment">//Receiving data: 00 b0 00 00 02</span>
<a name="l00175"></a>00175 <span class="comment">//= Read first 2 NDEF bytes</span>
<a name="l00176"></a>00176 <span class="comment">//Sent NDEF Length=0x21</span>
<a name="l00177"></a>00177 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\x00\x21\x90\x00"</span>,4);
<a name="l00178"></a>00178 receive_bytes();
<a name="l00179"></a>00179 <span class="comment">//Receiving data: 00 b0 00 02 21</span>
<a name="l00180"></a>00180 <span class="comment">//= Read remaining of NDEF file</span>
<a name="l00181"></a>00181 send_bytes((<span class="keyword">const</span> byte_t*)<span class="stringliteral">"\xd1\x02\x1c\x53\x70\x91\x01\x09\x54\x02\x65\x6e\x4c\x69\x62\x6e\x66\x63\x51\x01\x0b\x55\x03\x6c\x69\x62\x6e\x66\x63\x2e\x6f\x72\x67\x90\x00"</span>,35);
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a>(pnd);
<a name="l00184"></a>00184 exit (EXIT_SUCCESS);
<a name="l00185"></a>00185 }
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