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

nfc_initiator_target_is_present(): Support B2 ASK CT

Browse source
This commit is contained in:
Philippe Teuwen 2014-02-07 00:53:35 +01:00
parent a3a7111210
commit 9fd11d331b
1 changed files with 46 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
libnfc/chips/pn53x.c
View file

@ -1939,11 +1939,11 @@ static int pn53x_ISO14443B_I_is_present(struct nfc_device *pnd)
{ {
int ret; int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping B'"); log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping B'");
// Sending R(NACK) in raw: // Sending ATTRIB in raw:
if ((ret = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, false)) < 0) if ((ret = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, false)) < 0)
return ret; return ret;
uint8_t abtCmd[6] = {0x01, 0x0f}; // ATTRIB uint8_t abtCmd[6] = {0x01, 0x0f};
memcpy(abtCmd+2, CHIP_DATA(pnd)->current_target->nti.nii.abtDIV, 4); memcpy(abtCmd + 2, CHIP_DATA(pnd)->current_target->nti.nii.abtDIV, 4);
int failures = 0; int failures = 0;
while (failures < 2) { while (failures < 2) {
if ((ret = nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300)) < 1) { if ((ret = nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300)) < 1) {
@ -1964,6 +1964,30 @@ static int pn53x_ISO14443B_I_is_present(struct nfc_device *pnd)
return ret; return ret;
} }
static int pn53x_ISO14443B_CT_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping B2 ASK CT");
// Sending SELECT in raw: (EASY_FRAMING is already supposed to be false)
uint8_t abtCmd[3] = {0x9f};
memcpy(abtCmd + 1, CHIP_DATA(pnd)->current_target->nti.nci.abtUID, 2);
int failures = 0;
while (failures < 2) {
if ((ret = nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300)) < 1) {
if ((ret == NFC_ERFTRANS) && (CHIP_DATA(pnd)->last_status_byte == 0x01)) { // Timeout
ret = NFC_ETGRELEASED;
break;
} else { // Other errors can appear when card is tired-off, let's try again
failures++;
}
} else {
ret = NFC_SUCCESS;
break;
}
}
return ret;
}
int int
pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt) pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
{ {
@ -2011,8 +2035,10 @@ pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
case NMT_ISO14443BI: case NMT_ISO14443BI:
ret = pn53x_ISO14443B_I_is_present(pnd); ret = pn53x_ISO14443B_I_is_present(pnd);
break; break;
case NMT_ISO14443B2SR:
case NMT_ISO14443B2CT: case NMT_ISO14443B2CT:
ret = pn53x_ISO14443B_CT_is_present(pnd);
break;
case NMT_ISO14443B2SR:
default: default:
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): card type not supported"); log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): card type not supported");
ret = NFC_EDEVNOTSUPP; ret = NFC_EDEVNOTSUPP;