libnfc 1.3.9
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00001 /*- 00002 * Public platform independent Near Field Communication (NFC) library 00003 * 00004 * Copyright (C) 2010, Romuald Conty 00005 * 00006 * This program is free software: you can redistribute it and/or modify it 00007 * under the terms of the GNU Lesser General Public License as published by the 00008 * Free Software Foundation, either version 3 of the License, or (at your 00009 * option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, but WITHOUT 00012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 00014 * more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public License 00017 * along with this program. If not, see <http://www.gnu.org/licenses/> 00018 */ 00019 00025 #ifdef HAVE_CONFIG_H 00026 # include "config.h" 00027 #endif // HAVE_CONFIG_H 00028 00029 #include <err.h> 00030 #include <stdio.h> 00031 #include <stddef.h> 00032 #include <stdlib.h> 00033 #include <string.h> 00034 00035 #include <nfc/nfc.h> 00036 #include <nfc/nfc-types.h> 00037 #include <nfc/nfc-messages.h> 00038 #include "nfc-utils.h" 00039 00040 #define MAX_DEVICE_COUNT 16 00041 00042 static nfc_device_t *pnd; 00043 00044 int 00045 main (int argc, const char *argv[]) 00046 { 00047 size_t szFound; 00048 size_t i; 00049 nfc_device_desc_t *pnddDevices; 00050 00051 // Display libnfc version 00052 const char *acLibnfcVersion = nfc_version (); 00053 00054 if (argc > 1) { 00055 errx (1, "usage: %s", argv[0]); 00056 } 00057 00058 printf ("%s use libnfc %s\n", argv[0], acLibnfcVersion); 00059 00060 if (!(pnddDevices = malloc (MAX_DEVICE_COUNT * sizeof (*pnddDevices)))) { 00061 fprintf (stderr, "malloc() failed\n"); 00062 return EXIT_FAILURE; 00063 } 00064 00065 nfc_list_devices (pnddDevices, MAX_DEVICE_COUNT, &szFound); 00066 00067 if (szFound == 0) { 00068 INFO ("%s", "No device found."); 00069 } 00070 00071 for (i = 0; i < szFound; i++) { 00072 00073 const byte_t btPollNr = 20; 00074 const byte_t btPeriod = 2; 00075 const nfc_target_type_t nttMifare = NTT_MIFARE; 00076 const size_t szTargetTypes = 1; 00077 00078 nfc_target_t antTargets[2]; 00079 size_t szTargetFound; 00080 bool res; 00081 00082 pnd = nfc_connect (&(pnddDevices[i])); 00083 00084 if (pnd == NULL) { 00085 ERR ("%s", "Unable to connect to NFC device."); 00086 return 1; 00087 } 00088 nfc_initiator_init (pnd); 00089 00090 // Drop the field for a while 00091 if (!nfc_configure (pnd, NDO_ACTIVATE_FIELD, false)) { 00092 nfc_perror (pnd, "nfc_configure"); 00093 exit (EXIT_FAILURE); 00094 } 00095 // Let the reader only try once to find a tag 00096 if (!nfc_configure (pnd, NDO_INFINITE_SELECT, false)) { 00097 nfc_perror (pnd, "nfc_configure"); 00098 exit (EXIT_FAILURE); 00099 } 00100 // Configure the CRC and Parity settings 00101 if (!nfc_configure (pnd, NDO_HANDLE_CRC, true)) { 00102 nfc_perror (pnd, "nfc_configure"); 00103 exit (EXIT_FAILURE); 00104 } 00105 if (!nfc_configure (pnd, NDO_HANDLE_PARITY, true)) { 00106 nfc_perror (pnd, "nfc_configure"); 00107 exit (EXIT_FAILURE); 00108 } 00109 // Enable field so more power consuming cards can power themselves up 00110 if (!nfc_configure (pnd, NDO_ACTIVATE_FIELD, true)) { 00111 nfc_perror (pnd, "nfc_configure"); 00112 exit (EXIT_FAILURE); 00113 } 00114 00115 printf ("Connected to NFC reader: %s\n", pnd->acName); 00116 00117 printf ("PN53x will poll during %ld ms\n", (unsigned long) btPollNr * szTargetTypes * btPeriod * 150); 00118 res = nfc_initiator_poll_targets (pnd, &nttMifare, 1, btPollNr, btPeriod, antTargets, &szTargetFound); 00119 if (res) { 00120 uint8_t n; 00121 printf ("%ld target(s) have been found.\n", (unsigned long) szTargetFound); 00122 for (n = 0; n < szTargetFound; n++) { 00123 printf ("T%d: targetType=%02x, ", n + 1, antTargets[n].ntt); 00124 printf ("targetData:\n"); 00125 print_nfc_iso14443a_info (antTargets[n].nti.nai); 00126 } 00127 } else { 00128 nfc_perror (pnd, "nfc_initiator_poll_targets"); 00129 exit (EXIT_FAILURE); 00130 } 00131 00132 nfc_disconnect (pnd); 00133 } 00134 00135 free (pnddDevices); 00136 return 0; 00137 }