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<h1>nfc-emulate-tag.c</h1> </div>
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<a href="nfc-emulate-tag_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, 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">// Note that depending on the device (initiator) you'll use against, this</span>
<a name="l00036"></a>00036 <span class="comment">// emulator it might work or not. Some readers are very strict on responses</span>
<a name="l00037"></a>00037 <span class="comment">// timings, e.g. a Nokia NFC and will drop communication too soon for us.</span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor"># include "config.h"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#endif // HAVE_CONFIG_H</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <stdio.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00045"></a>00045 <span class="preprocessor">#include <stddef.h></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include <stdint.h></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <string.h></span>
<a name="l00048"></a>00048 <span class="preprocessor">#include <signal.h></span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="preprocessor">#include <nfc/nfc.h></span>
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="preprocessor">#include <nfc/nfc-messages.h></span>
<a name="l00053"></a>00053 <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="l00054"></a>00054
<a name="l00055"></a>00055 <span class="preprocessor">#define MAX_FRAME_LEN (264)</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#define SAK_ISO14443_4_COMPLIANT 0x20</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span>
<a name="l00058"></a>00058 <span class="keyword">static</span> byte_t abtRx[MAX_FRAME_LEN];
<a name="l00059"></a>00059 <span class="keyword">static</span> <span class="keywordtype">size_t</span> szRx;
<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> *pnd;
<a name="l00061"></a>00061 <span class="keyword">static</span> <span class="keywordtype">bool</span> quiet_output = <span class="keyword">false</span>;
<a name="l00062"></a>00062 <span class="keyword">static</span> <span class="keywordtype">bool</span> init_mfc_auth = <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">"\nQuitting...\n"</span>);
<a name="l00068"></a>00068 <span class="keywordflow">if</span> (pnd != NULL) {
<a name="l00069"></a>00069 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a>(pnd);
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 exit (EXIT_FAILURE);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordtype">bool</span>
<a name="l00075"></a>00075 target_io( <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> * pnt, <span class="keyword">const</span> byte_t * pbtInput, <span class="keyword">const</span> <span class="keywordtype">size_t</span> szInput, byte_t * pbtOutput, <span class="keywordtype">size_t</span> *pszOutput )
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> loop = <span class="keyword">true</span>;
<a name="l00078"></a>00078 *pszOutput = 0;
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="comment">// Show transmitted command</span>
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00082"></a>00082 printf (<span class="stringliteral">" In: "</span>);
<a name="l00083"></a>00083 print_hex (pbtInput, szInput);
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085 <span class="keywordflow">if</span>(szInput) {
<a name="l00086"></a>00086 <span class="keywordflow">switch</span>(pbtInput[0]) {
<a name="l00087"></a>00087 <span class="keywordflow">case</span> 0x30: <span class="comment">// Mifare read</span>
<a name="l00088"></a>00088 <span class="comment">// block address is in pbtInput[1]</span>
<a name="l00089"></a>00089 *pszOutput = 15;
<a name="l00090"></a>00090 strcpy((<span class="keywordtype">char</span>*)pbtOutput, <span class="stringliteral">"You read block "</span>);
<a name="l00091"></a>00091 pbtOutput[15] = pbtInput[1];
<a name="l00092"></a>00092 <span class="keywordflow">break</span>;
<a name="l00093"></a>00093 <span class="keywordflow">case</span> 0x50: <span class="comment">// Deselect / HALT</span>
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00095"></a>00095 printf(<span class="stringliteral">"Target halted me. Bye!\n"</span>);
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 loop = <span class="keyword">false</span>;
<a name="l00098"></a>00098 <span class="keywordflow">break</span>;
<a name="l00099"></a>00099 <span class="keywordflow">case</span> 0x60: <span class="comment">// Mifare authA</span>
<a name="l00100"></a>00100 <span class="keywordflow">case</span> 0x61: <span class="comment">// Mifare authB</span>
<a name="l00101"></a>00101 <span class="comment">// Let's give back a very random nonce...</span>
<a name="l00102"></a>00102 *pszOutput = 2;
<a name="l00103"></a>00103 pbtOutput[0] = 0x12;
<a name="l00104"></a>00104 pbtOutput[1] = 0x34;
<a name="l00105"></a>00105 <span class="comment">// Next commands will be without CRC</span>
<a name="l00106"></a>00106 init_mfc_auth = <span class="keyword">true</span>;
<a name="l00107"></a>00107 <span class="keywordflow">break</span>;
<a name="l00108"></a>00108 <span class="keywordflow">case</span> 0xe0: <span class="comment">// RATS</span>
<a name="l00109"></a>00109 <span class="comment">// Send ATS</span>
<a name="l00110"></a>00110 *pszOutput = pnt->nti.nai.szAtsLen + 1;
<a name="l00111"></a>00111 pbtOutput[0] = pnt->nti.nai.szAtsLen + 1; <span class="comment">// ISO14443-4 says that ATS contains ATS_Lenght as first byte</span>
<a name="l00112"></a>00112 <span class="keywordflow">if</span>(pnt->nti.nai.szAtsLen) {
<a name="l00113"></a>00113 memcpy(pbtOutput+1, pnt->nti.nai.abtAts, pnt->nti.nai.szAtsLen);
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 <span class="keywordflow">break</span>;
<a name="l00116"></a>00116 <span class="keywordflow">case</span> 0xc2: <span class="comment">// S-block DESELECT</span>
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00118"></a>00118 printf(<span class="stringliteral">"Target released me. Bye!\n"</span>);
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 loop = <span class="keyword">false</span>;
<a name="l00121"></a>00121 <span class="keywordflow">break</span>;
<a name="l00122"></a>00122 <span class="keywordflow">default</span>: <span class="comment">// Unknown</span>
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (!quiet_output) {
<a name="l00124"></a>00124 printf(<span class="stringliteral">"Unknown frame, emulated target abort.\n"</span>);
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 loop = <span class="keyword">false</span>;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 <span class="comment">// Show transmitted command</span>
<a name="l00130"></a>00130 <span class="keywordflow">if</span> ((!quiet_output) && *pszOutput) {
<a name="l00131"></a>00131 printf (<span class="stringliteral">" Out: "</span>);
<a name="l00132"></a>00132 print_hex (pbtOutput, *pszOutput);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 <span class="keywordflow">return</span> loop;
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordtype">bool</span>
<a name="l00138"></a>00138 nfc_target_emulate_tag(<a class="code" href="structnfc__device__t.html" title="NFC device information.">nfc_device_t</a>* pnd, <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> * pnt)
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="keywordtype">size_t</span> szTx;
<a name="l00141"></a>00141 byte_t abtTx[MAX_FRAME_LEN];
<a name="l00142"></a>00142 <span class="keywordtype">bool</span> loop = <span class="keyword">true</span>;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <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, pnt, abtRx, &szRx)) {
<a name="l00145"></a>00145 <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="l00146"></a>00146 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">while</span> ( loop ) {
<a name="l00150"></a>00150 loop = target_io( pnt, abtRx, szRx, abtTx, &szTx );
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (szTx) {
<a name="l00152"></a>00152 <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, szTx)) {
<a name="l00153"></a>00153 <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="l00154"></a>00154 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 <span class="keywordflow">if</span> ( loop ) {
<a name="l00158"></a>00158 <span class="keywordflow">if</span> ( init_mfc_auth ) {
<a name="l00159"></a>00159 <a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311ea34588e4870fcc10476151e27e8e97a74">NDO_HANDLE_CRC</a>, <span class="keyword">false</span>);
<a name="l00160"></a>00160 init_mfc_auth = <span class="keyword">false</span>;
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 <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="l00163"></a>00163 <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="l00164"></a>00164 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keywordtype">int</span>
<a name="l00172"></a>00172 main (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[])
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="keyword">const</span> <span class="keywordtype">char</span> *acLibnfcVersion;
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="preprocessor">#ifdef WIN32</span>
<a name="l00177"></a>00177 <span class="preprocessor"></span> signal (SIGINT, (<span class="keywordtype">void</span> (__cdecl *) (<span class="keywordtype">int</span>)) intr_hdlr);
<a name="l00178"></a>00178 <span class="preprocessor">#else</span>
<a name="l00179"></a>00179 <span class="preprocessor"></span> signal (SIGINT, (<span class="keywordtype">void</span> (*)()) intr_hdlr);
<a name="l00180"></a>00180 <span class="preprocessor">#endif</span>
<a name="l00181"></a>00181 <span class="preprocessor"></span>
<a name="l00182"></a>00182 <span class="comment">// Try to open the NFC reader</span>
<a name="l00183"></a>00183 pnd = <a class="code" href="nfc_8c.html#aff0c2c92d2fc81e5dc93150fc72a7de6" title="Connect to a NFC device.">nfc_connect</a> (NULL);
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="comment">// Display libnfc version</span>
<a name="l00186"></a>00186 acLibnfcVersion = <a class="code" href="nfc_8c.html#aa48f27c0f93d6508ad9a5ae01ab054d4" title="Returns the library version.">nfc_version</a> ();
<a name="l00187"></a>00187 printf (<span class="stringliteral">"%s use libnfc %s\n"</span>, argv[0], acLibnfcVersion);
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="keywordflow">if</span> (pnd == NULL) {
<a name="l00190"></a>00190 ERR(<span class="stringliteral">"Unable to connect to NFC device"</span>);
<a name="l00191"></a>00191 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 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="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">// Notes for ISO14443-A emulated tags:</span>
<a name="l00197"></a>00197 <span class="comment">// * Only short UIDs are supported</span>
<a name="l00198"></a>00198 <span class="comment">// If your UID is longer it will be truncated</span>
<a name="l00199"></a>00199 <span class="comment">// Therefore e.g. an UltraLight can only have short UID, which is</span>
<a name="l00200"></a>00200 <span class="comment">// typically badly handled by readers who still try to send their "0x95"</span>
<a name="l00201"></a>00201 <span class="comment">// * First byte of UID will be masked by 0x08 by the PN53x firmware</span>
<a name="l00202"></a>00202 <span class="comment">// as security countermeasure against real UID emulation</span>
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="comment">// Example of a Mifare Classic Mini</span>
<a name="l00205"></a>00205 <span class="comment">// Note that crypto1 is not implemented in this example</span>
<a name="l00206"></a>00206 <a class="code" href="structnfc__target__t.html" title="NFC target structure.">nfc_target_t</a> nt = {
<a name="l00207"></a>00207 .nm.nmt = NMT_ISO14443A,
<a name="l00208"></a>00208 .nm.nbr = NBR_UNDEFINED,
<a name="l00209"></a>00209 .nti.nai.abtAtqa = { 0x00, 0x04 },
<a name="l00210"></a>00210 .nti.nai.abtUid = { 0x08, 0xab, 0xcd, 0xef },
<a name="l00211"></a>00211 .nti.nai.btSak = 0x09,
<a name="l00212"></a>00212 .nti.nai.szUidLen = 4,
<a name="l00213"></a>00213 .nti.nai.szAtsLen = 0,
<a name="l00214"></a>00214 };
<a name="l00215"></a>00215 <span class="comment">/*</span>
<a name="l00216"></a>00216 <span class="comment"> // Example of a FeliCa</span>
<a name="l00217"></a>00217 <span class="comment"> nfc_target_t nt = {</span>
<a name="l00218"></a>00218 <span class="comment"> .nm.nmt = NMT_FELICA,</span>
<a name="l00219"></a>00219 <span class="comment"> .nm.nbr = NBR_UNDEFINED,</span>
<a name="l00220"></a>00220 <span class="comment"> .nti.nfi.abtId = { 0x01, 0xFE, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xFF },</span>
<a name="l00221"></a>00221 <span class="comment"> .nti.nfi.abtPad = { 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xFF },</span>
<a name="l00222"></a>00222 <span class="comment"> .nti.nfi.abtSysCode = { 0xFF, 0xFF },</span>
<a name="l00223"></a>00223 <span class="comment"> };</span>
<a name="l00224"></a>00224 <span class="comment">*/</span>
<a name="l00225"></a>00225 <span class="comment">/*</span>
<a name="l00226"></a>00226 <span class="comment"> // Example of a ISO14443-4 (DESfire)</span>
<a name="l00227"></a>00227 <span class="comment"> nfc_target_t nt = {</span>
<a name="l00228"></a>00228 <span class="comment"> .nm.nmt = NMT_ISO14443A,</span>
<a name="l00229"></a>00229 <span class="comment"> .nm.nbr = NBR_UNDEFINED,</span>
<a name="l00230"></a>00230 <span class="comment"> .nti.nai.abtAtqa = { 0x03, 0x44 },</span>
<a name="l00231"></a>00231 <span class="comment"> .nti.nai.abtUid = { 0x08, 0xab, 0xcd, 0xef },</span>
<a name="l00232"></a>00232 <span class="comment"> .nti.nai.btSak = 0x20,</span>
<a name="l00233"></a>00233 <span class="comment"> .nti.nai.szUidLen = 4,</span>
<a name="l00234"></a>00234 <span class="comment"> .nti.nai.abtAts = { 0x75, 0x77, 0x81, 0x02, 0x80 },</span>
<a name="l00235"></a>00235 <span class="comment"> .nti.nai.szAtsLen = 5,</span>
<a name="l00236"></a>00236 <span class="comment"> };</span>
<a name="l00237"></a>00237 <span class="comment">*/</span>
<a name="l00238"></a>00238
<a name="l00239"></a>00239 printf (<span class="stringliteral">"%s will emulate this ISO14443-A tag:\n"</span>, argv[0]);
<a name="l00240"></a>00240 print_nfc_iso14443a_info (nt.nti.nai, <span class="keyword">true</span>);
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="comment">// Switch off NDO_EASY_FRAMING if target is not ISO14443-4</span>
<a name="l00243"></a>00243 <a class="code" href="nfc_8c.html#a6cd940508b34b99c6c94173f8300d069" title="Configure advanced NFC device settings.">nfc_configure</a> (pnd, <a class="code" href="nfc-types_8h.html#ab2cdef5e5ac453e9c60c9fe449cb311eabb3413ff22c634f90298444e0fffed5f">NDO_EASY_FRAMING</a>, (nt.nti.nai.btSak & SAK_ISO14443_4_COMPLIANT));
<a name="l00244"></a>00244 printf (<span class="stringliteral">"NFC device (configured as target) is now emulating the tag, please touch it with a second NFC device (initiator)\n"</span>);
<a name="l00245"></a>00245 <span class="keywordflow">if</span> (!nfc_target_emulate_tag (pnd, &nt)) {
<a name="l00246"></a>00246 <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_emulate_tag"</span>);
<a name="l00247"></a>00247 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <a class="code" href="nfc_8c.html#a442dc68878c3a0bb7e3293c8fd96afb0" title="Disconnect from a NFC device.">nfc_disconnect</a>(pnd);
<a name="l00251"></a>00251 exit (EXIT_SUCCESS);
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253
</pre></div></div>
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