69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/**
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* @file quick_start_example2.c
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* @brief Quick start example that presents how to use libnfc
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*/
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// This is same example as quick_start_example1.c but using
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// some helper functions existing in libnfc.
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// Those functions are not available yet in a library
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// so binary object must be linked statically:
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// $ gcc -o quick_start_example2 -lnfc -I../.. quick_start_example2.c ../../utils/nfc-utils.o
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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 <stdlib.h>
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#include <nfc/nfc.h>
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#include "utils/nfc-utils.h"
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int
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main(int argc, const char *argv[])
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{
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nfc_device *pnd;
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nfc_target nt;
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nfc_init(NULL);
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// Display libnfc version
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const char *acLibnfcVersion = nfc_version();
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printf("%s uses libnfc %s\n", argv[0], acLibnfcVersion);
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// Open, using the first available NFC device
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pnd = nfc_open(NULL, NULL);
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if (pnd == NULL) {
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ERR("%s", "Unable to open NFC device.");
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return EXIT_FAILURE;
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}
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// Set opened NFC device to initiator mode
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if (nfc_initiator_init(pnd) < 0) {
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nfc_perror(pnd, "nfc_initiator_init");
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exit(EXIT_FAILURE);
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}
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printf("NFC reader: %s opened\n", nfc_device_get_name(pnd));
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// Poll for a ISO14443A (MIFARE) tag
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const nfc_modulation nmMifare = {
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.nmt = NMT_ISO14443A,
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.nbr = NBR_106,
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};
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if (nfc_initiator_select_passive_target(pnd, nmMifare, NULL, 0, &nt) > 0) {
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printf("The following (NFC) ISO14443A tag was found:\n");
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printf(" ATQA (SENS_RES): ");
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print_hex(nt.nti.nai.abtAtqa, 2);
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printf(" UID (NFCID%c): ", (nt.nti.nai.abtUid[0] == 0x08 ? '3' : '1'));
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print_hex(nt.nti.nai.abtUid, nt.nti.nai.szUidLen);
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printf(" SAK (SEL_RES): ");
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print_hex(&nt.nti.nai.btSak, 1);
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if (nt.nti.nai.szAtsLen) {
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printf(" ATS (ATR): ");
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print_hex(nt.nti.nai.abtAts, nt.nti.nai.szAtsLen);
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}
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}
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// Close NFC device
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nfc_close(pnd);
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nfc_exit(NULL);
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return EXIT_SUCCESS;
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}
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