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nfc-anticol: add option -t for timed exchanges

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This commit is contained in:
Philippe Teuwen 2013-04-05 14:33:16 +02:00
parent d319e87ff8
commit fc144fe389
1 changed files with 26 additions and 5 deletions
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23
examples/nfc-anticol.c
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@ -70,6 +70,7 @@ static nfc_device *pnd;
bool quiet_output = false; bool quiet_output = false;
bool force_rats = false; bool force_rats = false;
bool timed = false;
bool iso_ats_supported = false; bool iso_ats_supported = false;
// ISO14443A Anti-Collision Commands // ISO14443A Anti-Collision Commands
@ -83,15 +84,23 @@ uint8_t abtHalt[4] = { 0x50, 0x00, 0x00, 0x00 };
static bool static bool
transmit_bits(const uint8_t *pbtTx, const size_t szTxBits) transmit_bits(const uint8_t *pbtTx, const size_t szTxBits)
{ {
uint32_t cycles = 0;
// Show transmitted command // Show transmitted command
if (!quiet_output) { if (!quiet_output) {
printf("Sent bits: "); printf("Sent bits: ");
print_hex_bits(pbtTx, szTxBits); print_hex_bits(pbtTx, szTxBits);
} }
// Transmit the bit frame command, we don't use the arbitrary parity feature // Transmit the bit frame command, we don't use the arbitrary parity feature
if (timed) {
if ((szRxBits = nfc_initiator_transceive_bits_timed(pnd, pbtTx, szTxBits, NULL, abtRx, sizeof(abtRx), NULL, &cycles)) < 0)
return false;
if ((!quiet_output) && (szRxBits > 0)) {
printf("Response after %u cycles\n", cycles);
}
} else {
if ((szRxBits = nfc_initiator_transceive_bits(pnd, pbtTx, szTxBits, NULL, abtRx, sizeof(abtRx), NULL)) < 0) if ((szRxBits = nfc_initiator_transceive_bits(pnd, pbtTx, szTxBits, NULL, abtRx, sizeof(abtRx), NULL)) < 0)
return false; return false;
}
// Show received answer // Show received answer
if (!quiet_output) { if (!quiet_output) {
printf("Received bits: "); printf("Received bits: ");
@ -105,6 +114,7 @@ transmit_bits(const uint8_t *pbtTx, const size_t szTxBits)
static bool static bool
transmit_bytes(const uint8_t *pbtTx, const size_t szTx) transmit_bytes(const uint8_t *pbtTx, const size_t szTx)
{ {
uint32_t cycles = 0;
// Show transmitted command // Show transmitted command
if (!quiet_output) { if (!quiet_output) {
printf("Sent bits: "); printf("Sent bits: ");
@ -112,8 +122,16 @@ transmit_bytes(const uint8_t *pbtTx, const size_t szTx)
} }
int res; int res;
// Transmit the command bytes // Transmit the command bytes
if (timed) {
if ((res = nfc_initiator_transceive_bytes_timed(pnd, pbtTx, szTx, abtRx, sizeof(abtRx), &cycles)) < 0)
return false;
if ((!quiet_output) && (res > 0)) {
printf("Response after %u cycles\n", cycles);
}
} else {
if ((res = nfc_initiator_transceive_bytes(pnd, pbtTx, szTx, abtRx, sizeof(abtRx), 0)) < 0) if ((res = nfc_initiator_transceive_bytes(pnd, pbtTx, szTx, abtRx, sizeof(abtRx), 0)) < 0)
return false; return false;
}
szRx = res; szRx = res;
// Show received answer // Show received answer
if (!quiet_output) { if (!quiet_output) {
@ -132,6 +150,7 @@ print_usage(char *argv[])
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"); printf("\t-f\tForce RATS.\n");
printf("\t-t\tMeasure response time (in cycles).\n");
} }
int int
@ -148,6 +167,8 @@ main(int argc, char *argv[])
quiet_output = true; quiet_output = true;
} else if (0 == strcmp(argv[arg], "-f")) { } else if (0 == strcmp(argv[arg], "-f")) {
force_rats = true; force_rats = true;
} else if (0 == strcmp(argv[arg], "-t")) {
timed = 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);