crewID/libnfc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

nfc-anticol: -f option to force RATS

Browse source
This commit is contained in:
Philippe Teuwen 2011-06-07 18:47:20 +00:00
parent bf5b97f86a
commit cbbda20018
1 changed files with 21 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
examples/nfc-anticol.c
View file

@ -57,10 +57,14 @@ static size_t szRx = sizeof(abtRx);
static byte_t abtRawUid[12]; static byte_t abtRawUid[12];
static byte_t abtAtqa[2]; static byte_t abtAtqa[2];
static byte_t abtSak; static byte_t abtSak;
static byte_t abtAts[MAX_FRAME_LEN];
static byte_t szAts = 0;
static size_t szCL = 1;//Always start with Cascade Level 1 (CL1) static size_t szCL = 1;//Always start with Cascade Level 1 (CL1)
static nfc_device_t *pnd; static nfc_device_t *pnd;
bool quiet_output = false; bool quiet_output = false;
bool force_rats = false;
bool iso_ats_supported = false;
// ISO14443A Anti-Collision Commands // ISO14443A Anti-Collision Commands
byte_t abtReqa[1] = { 0x26 }; byte_t abtReqa[1] = { 0x26 };
@ -120,6 +124,7 @@ print_usage (char *argv[])
printf ("Options:\n"); printf ("Options:\n");
printf ("\t-h\tHelp. Print this message.\n"); printf ("\t-h\tHelp. Print this message.\n");
printf ("\t-q\tQuiet mode. Suppress output of READER and EMULATOR data (improves timing).\n"); printf ("\t-q\tQuiet mode. Suppress output of READER and EMULATOR data (improves timing).\n");
printf ("\t-f\tForce RATS.\n");
} }
int int
@ -134,6 +139,8 @@ main (int argc, char *argv[])
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
} else if (0 == strcmp (argv[arg], "-q")) { } else if (0 == strcmp (argv[arg], "-q")) {
quiet_output = true; quiet_output = true;
} else if (0 == strcmp (argv[arg], "-f")) {
force_rats = true;
} else { } else {
ERR ("%s is not supported option.", argv[arg]); ERR ("%s is not supported option.", argv[arg]);
print_usage (argv); print_usage (argv);
@ -263,8 +270,14 @@ main (int argc, char *argv[])
// Request ATS, this only applies to tags that support ISO 14443A-4 // Request ATS, this only applies to tags that support ISO 14443A-4
if (abtRx[0] & SAK_FLAG_ATS_SUPPORTED) { if (abtRx[0] & SAK_FLAG_ATS_SUPPORTED) {
iso_ats_supported = true;
}
if ((abtRx[0] & SAK_FLAG_ATS_SUPPORTED) || force_rats) {
iso14443a_crc_append(abtRats, 2); iso14443a_crc_append(abtRats, 2);
transmit_bytes (abtRats, 4); if (transmit_bytes (abtRats, 4)) {
memcpy (abtAts, abtRx, szRx);
szAts = szRx;
}
} }
// Done, halt the tag now // Done, halt the tag now
@ -288,6 +301,13 @@ main (int argc, char *argv[])
} }
printf("\n"); printf("\n");
printf("ATQA: %02x%02x\n SAK: %02x\n", abtAtqa[1], abtAtqa[0], abtSak); printf("ATQA: %02x%02x\n SAK: %02x\n", abtAtqa[1], abtAtqa[0], abtSak);
if (szAts > 1) { // if = 1, it's not actual ATS but error code
if (force_rats && ! iso_ats_supported) {
printf(" RATS forced\n");
}
printf(" ATS: ");
print_hex (abtAts, szAts);
}
nfc_disconnect (pnd); nfc_disconnect (pnd);
return 0; return 0;