libnfc 1.4.2
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00001 /*- 00002 * Public platform independent Near Field Communication (NFC) library examples 00003 * 00004 * Copyright (C) 2009, Roel Verdult 00005 * Copyright (C) 2010, Romuald Conty 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions are met: 00009 * 1) Redistributions of source code must retain the above copyright notice, 00010 * this list of conditions and the following disclaimer. 00011 * 2 )Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 00015 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00016 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00017 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00018 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 00019 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00020 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00021 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00024 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00025 * POSSIBILITY OF SUCH DAMAGE. 00026 * 00027 * Note that this license only applies on the examples, NFC library itself is under LGPL 00028 * 00029 */ 00030 00036 #ifdef HAVE_CONFIG_H 00037 # include "config.h" 00038 #endif // HAVE_CONFIG_H 00039 00040 #include <stdio.h> 00041 #include <stdlib.h> 00042 00043 #include <nfc/nfc.h> 00044 00045 #include "nfc-utils.h" 00046 00047 #define MAX_FRAME_LEN 264 00048 00049 int 00050 main (int argc, const char *argv[]) 00051 { 00052 byte_t abtRx[MAX_FRAME_LEN]; 00053 size_t szRx; 00054 size_t szDeviceFound; 00055 byte_t abtTx[] = "Hello Mars!"; 00056 nfc_device_t *pnd; 00057 #define MAX_DEVICE_COUNT 2 00058 nfc_device_desc_t pnddDevices[MAX_DEVICE_COUNT]; 00059 nfc_list_devices (pnddDevices, MAX_DEVICE_COUNT, &szDeviceFound); 00060 // Little hack to allow using nfc-dep-initiator & nfc-dep-target from 00061 // the same machine: if there is more than one readers connected 00062 // nfc-dep-target will connect to the second reader 00063 // (we hope they're always detected in the same order) 00064 if (szDeviceFound == 1) { 00065 pnd = nfc_connect (&(pnddDevices[0])); 00066 } else if (szDeviceFound > 1) { 00067 pnd = nfc_connect (&(pnddDevices[1])); 00068 } else { 00069 printf("No device found."); 00070 return EXIT_FAILURE; 00071 } 00072 00073 if (argc > 1) { 00074 printf ("Usage: %s\n", argv[0]); 00075 return EXIT_FAILURE; 00076 } 00077 00078 nfc_target_t nt = { 00079 .nm.nmt = NMT_DEP, 00080 .nm.nbr = NBR_UNDEFINED, // Will be updated by nfc_target_init 00081 .nti.ndi.abtNFCID3 = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0x00, 0x00 }, 00082 .nti.ndi.szGB = 4, 00083 .nti.ndi.abtGB = { 0x12, 0x34, 0x56, 0x78 }, 00084 /* These bytes are not used by nfc_target_init: the chip will provide them automatically to the initiator */ 00085 .nti.ndi.btDID = 0x00, 00086 .nti.ndi.btBS = 0x00, 00087 .nti.ndi.btBR = 0x00, 00088 .nti.ndi.btTO = 0x00, 00089 .nti.ndi.btPP = 0x01, 00090 }; 00091 00092 if (!pnd) { 00093 printf("Unable to connect to NFC device.\n"); 00094 return EXIT_FAILURE; 00095 } 00096 printf ("Connected to NFC device: %s\n", pnd->acName); 00097 00098 printf ("NFC device will now act as: "); 00099 print_nfc_target (nt, false); 00100 00101 printf ("Waiting for initiator request...\n"); 00102 if(!nfc_target_init (pnd, &nt, abtRx, &szRx)) { 00103 nfc_perror(pnd, "nfc_target_init"); 00104 return EXIT_FAILURE; 00105 } 00106 00107 printf("Initiator request received. Waiting for data...\n"); 00108 if (!nfc_target_receive_bytes (pnd, abtRx, &szRx)) { 00109 nfc_perror(pnd, "nfc_target_receive_bytes"); 00110 return EXIT_FAILURE; 00111 } 00112 abtRx[szRx] = '\0'; 00113 printf ("Received: %s\n", abtRx); 00114 00115 printf ("Sending: %s\n", abtTx); 00116 if (!nfc_target_send_bytes (pnd, abtTx, sizeof(abtTx))) { 00117 nfc_perror(pnd, "nfc_target_send_bytes"); 00118 return EXIT_FAILURE; 00119 } 00120 printf("Data sent.\n"); 00121 00122 nfc_disconnect (pnd); 00123 return EXIT_SUCCESS; 00124 }