152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
/*-
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* Public platform independent Near Field Communication (NFC) library examples
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*
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* Copyright (C) 2010, Romuald Conty
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* Copyright (C) 2011, Romain Tartiere, Romuald Conty
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2 )Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Note that this license only applies on the examples, NFC library itself is under LGPL
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*
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*/
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/**
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* @file nfc-poll
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* @brief Polling example
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif // HAVE_CONFIG_H
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#include <err.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <nfc/nfc.h>
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#include <nfc/nfc-types.h>
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#include "nfc-utils.h"
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#define MAX_DEVICE_COUNT 16
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static nfc_device_t *pnd = NULL;
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void stop_polling (int sig)
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{
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(void) sig;
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if (pnd)
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nfc_abort_command (pnd);
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else
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exit (EXIT_FAILURE);
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}
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int
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main (int argc, const char *argv[])
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{
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size_t szFound;
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size_t i;
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bool verbose = false;
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nfc_device_desc_t *pnddDevices;
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signal (SIGINT, stop_polling);
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pnddDevices = parse_args (argc, argv, &szFound, &verbose);
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// Display libnfc version
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const char *acLibnfcVersion = nfc_version ();
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if (argc > 1) {
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errx (1, "usage: %s", argv[0]);
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}
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printf ("%s use libnfc %s\n", argv[0], acLibnfcVersion);
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if (szFound == 0) {
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if (!(pnddDevices = malloc (MAX_DEVICE_COUNT * sizeof (*pnddDevices)))) {
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fprintf (stderr, "malloc() failed\n");
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exit (EXIT_FAILURE);
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}
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}
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nfc_list_devices (pnddDevices, MAX_DEVICE_COUNT, &szFound);
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if (szFound == 0) {
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printf ("No NFC device found.\n");
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}
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for (i = 0; i < szFound; i++) {
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const byte_t btPollNr = 20;
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const byte_t btPeriod = 2;
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const nfc_modulation_t nmModulations[5] = {
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{ .nmt = NMT_ISO14443A, .nbr = NBR_106 },
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{ .nmt = NMT_ISO14443B, .nbr = NBR_106 },
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{ .nmt = NMT_FELICA, .nbr = NBR_212 },
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{ .nmt = NMT_FELICA, .nbr = NBR_424 },
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{ .nmt = NMT_JEWEL, .nbr = NBR_106 },
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};
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const size_t szModulations = 5;
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nfc_target_t antTargets[2];
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size_t szTargetFound;
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bool res;
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pnd = nfc_connect (&(pnddDevices[i]));
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if (pnd == NULL) {
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ERR ("%s", "Unable to connect to NFC device.");
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exit (EXIT_FAILURE);
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}
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nfc_initiator_init (pnd);
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// Let the reader only try once to find a tag
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if (!nfc_configure (pnd, NDO_INFINITE_SELECT, false)) {
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nfc_perror (pnd, "nfc_configure");
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exit (EXIT_FAILURE);
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}
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printf ("Connected to NFC reader: %s\n", pnd->acName);
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printf ("PN532 will poll during %ld ms\n", (unsigned long) btPollNr * szModulations * btPeriod * 150);
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res = nfc_initiator_poll_targets (pnd, nmModulations, szModulations, btPollNr, btPeriod, antTargets, &szTargetFound);
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if (res) {
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uint8_t n;
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printf ("%ld target(s) have been found.\n", (unsigned long) szTargetFound);
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for (n = 0; n < szTargetFound; n++) {
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printf ("T%d: ", n + 1);
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print_nfc_target ( antTargets[n], verbose );
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}
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} else {
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nfc_perror (pnd, "nfc_initiator_poll_targets");
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nfc_disconnect (pnd);
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exit (EXIT_FAILURE);
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}
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nfc_disconnect (pnd);
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}
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free (pnddDevices);
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exit (EXIT_SUCCESS);
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}
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