INT32 nativeNfcLlcp_ConnLessReceiveMessage(UINT8* msg, UINT32 *length)
{
NXPLOG_API_D ("%s: enter\n", __FUNCTION__);
if(msg == NULL || length == NULL){
NXPLOG_API_E ("%s: Invalid buffer or length", __FUNCTION__);
return NFA_STATUS_FAILED;
}
NXPLOG_API_D("nfaLlcpServerCallBack: remote sap ID 0x%04x\n ", bDestSap);
if( (bServerReadState == FALSE) && (bClientReadState == FALSE) )
{
sNfaLlcpConnLessReadEvent.wait();
}
if(NFA_STATUS_OK != NFA_P2pReadUI ((size_t)sLlcpConnLessHandle,
LLCP_MAX_DATA_SIZE,
&bDestSap,
&dwLlcpReadLength,
&bLlcpReadData[0],
&blMoreDataRemaining))
{
NXPLOG_API_D ("%s: send response failed.", __FUNCTION__);
return NFA_STATUS_FAILED;
}
else
{
memcpy(msg,bLlcpReadData, dwLlcpReadLength);
*length = dwLlcpReadLength;
NXPLOG_API_D ("%s: exit\n", __FUNCTION__);
bServerReadState = FALSE;
bClientReadState = FALSE;
return NFA_STATUS_OK;
}
}
/*******************************************************************************
**
** Function: nativeNfcTag_doRead
**
** Description: Read the NDEF message on the tag.
** e: JVM environment.
** o: Java object.
**
** Returns: NDEF message.
**
*******************************************************************************/
static jbyteArray nativeNfcTag_doRead (JNIEnv* e, jobject)
{
ALOGD ("%s: enter", __FUNCTION__);
tNFA_STATUS status = NFA_STATUS_FAILED;
jbyteArray buf = NULL;
sReadDataLen = 0;
if (sReadData != NULL)
{
free (sReadData);
sReadData = NULL;
}
if (sCheckNdefCurrentSize > 0)
{
{
SyncEventGuard g (sReadEvent);
sIsReadingNdefMessage = true;
status = NFA_RwReadNDef ();
sReadEvent.wait (); //wait for NFA_READ_CPLT_EVT
}
sIsReadingNdefMessage = false;
if (sReadDataLen > 0) //if stack actually read data from the tag
{
ALOGD ("%s: read %u bytes", __FUNCTION__, sReadDataLen);
buf = e->NewByteArray (sReadDataLen);
e->SetByteArrayRegion (buf, 0, sReadDataLen, (jbyte*) sReadData);
}
}
else
{
ALOGD ("%s: create empty buffer", __FUNCTION__);
sReadDataLen = 0;
sReadData = (uint8_t*) malloc (1);
buf = e->NewByteArray (sReadDataLen);
e->SetByteArrayRegion (buf, 0, sReadDataLen, (jbyte*) sReadData);
}
if (sReadData)
{
free (sReadData);
sReadData = NULL;
}
sReadDataLen = 0;
ALOGD ("%s: exit", __FUNCTION__);
return buf;
}
INT32 nativeNfcLlcp_ConnLessRegisterClientCallback(nfcllcpConnlessClientCallback_t *clientCallback)
{
tNFA_STATUS status = NFA_STATUS_FAILED;
pthread_t llcpCleintRespThread;
int ret = 1;
NXPLOG_API_D ("%s:", __FUNCTION__);
gSyncMutex.lock();
if (!nativeNfcManager_isNfcActive())
{
NXPLOG_API_E ("%s: Nfc not initialized.", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
sRfEnabled = isDiscoveryStarted();
if (sRfEnabled)
{
/* Stop RF Discovery if we were polling */
startRfDiscovery (FALSE);
}
{
SyncEventGuard g (sNfaLlcpClientRegEvent);
bClientReadState = FALSE;
if(NFA_STATUS_OK != (status = NFA_P2pRegisterClient(NFA_P2P_LLINK_TYPE, nfaLlcpClientCallback)))
{
NXPLOG_API_E ("%s: fail to register client callback for LLCP", __FUNCTION__);
if (sRfEnabled)
{
/* Rollback to default */
startRfDiscovery (TRUE);
gSyncMutex.unlock();
return status;
}
}
sNfaLlcpClientRegEvent.wait();
}
sClientCallback = clientCallback;
status = NFA_STATUS_OK;
gSyncMutex.unlock();
return status;
}
static void *snepServerThread(void *arg)
{
(void)arg;
SyncEventGuard guard (sNfaSnepServerPutRspEvent);
NXPLOG_API_D ("%s: enter\n", __FUNCTION__);
while(sSnepServerState == SNEP_SERVER_STARTED)
{
sNfaSnepServerPutRspEvent.wait();
if (sSnepServerConnectionHandle == 0)
break;
if(NFA_STATUS_OK != NFA_SnepPutResponse(sSnepServerConnectionHandle, sNfaSnepRespCode))
{
NXPLOG_API_D ("%s: send response failed.", __FUNCTION__);
}
}
NXPLOG_API_D ("%s: exit\n", __FUNCTION__);
pthread_exit(NULL);
return NULL;
}
INT32 nativeNfcSnep_registerClientCallback(nfcSnepClientCallback_t *clientCallback)
{
tNFA_STATUS status = NFA_STATUS_FAILED;
NXPLOG_API_D ("%s:", __FUNCTION__);
gSyncMutex.lock();
if (!nativeNfcManager_isNfcActive())
{
NXPLOG_API_E ("%s: Nfc not initialized.", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
sRfEnabled = isDiscoveryStarted();
if (sRfEnabled)
{
// Stop RF Discovery if we were polling
startRfDiscovery (FALSE);
}
{
SyncEventGuard g (sNfaSnepClientRegEvent);
if(NFA_STATUS_OK != (status = NFA_SnepRegisterClient(nfaSnepClientCallback)))
{
NXPLOG_API_E ("%s: fail to register client callback for SNEP", __FUNCTION__);
goto clean_and_return;
}
sNfaSnepClientRegEvent.wait();
}
sClientCallback = clientCallback;
status = NFA_STATUS_OK;
clean_and_return:
if (sRfEnabled)
{
// Stop RF Discovery if we were polling
startRfDiscovery (TRUE);
}
gSyncMutex.unlock();
return status;
}
INT32 nativeNfcSnep_putMessage(UINT8* msg, UINT32 length)
{
tNFA_STATUS status = NFA_STATUS_FAILED;
NXPLOG_API_D ("%s: data length = %d", __FUNCTION__, length);
if (!sSnepClientHandle)
{
NXPLOG_API_E ("%s: no connection", __FUNCTION__);
return NFA_STATUS_FAILED;
}
if (!msg || length == 0)
{
NXPLOG_API_E ("%s: wrong param", __FUNCTION__);
return NFA_STATUS_FAILED;
}
if(NFA_STATUS_OK != NDEF_MsgValidate(msg, length, FALSE))
{
NXPLOG_API_E ("%s: not NDEF message", __FUNCTION__);
return NFA_STATUS_FAILED;
}
gSyncMutex.lock();
if (!nativeNfcManager_isNfcActive())
{
NXPLOG_API_E ("%s: Nfc not initialized.", __FUNCTION__);
status = NFA_STATUS_FAILED;
goto clean_and_return;
}
if (sSnepClientHandle){
SyncEventGuard guard (sNfaSnepClientConnEvent);
if(NFA_STATUS_OK != NFA_SnepConnect(sSnepClientHandle, SNEP_SERVER_NAME))
{
status = NFA_STATUS_FAILED;
goto clean_and_return;
}
sNfaSnepClientConnEvent.wait();
}
/* Send Put Request */
if (sSnepClientConnectionHandle != 0)
{
SyncEventGuard guard (sNfaSnepClientPutMsgEvent);
if(NFA_STATUS_OK != NFA_SnepPut (sSnepClientConnectionHandle, length, msg))
{
status = NFA_STATUS_FAILED;
goto clean_and_return;
}
sNfaSnepClientPutMsgEvent.wait();
if (sSnepClientPutState != NFA_STATUS_OK)
{
status = NFA_STATUS_FAILED;
}
else
{
status = NFA_STATUS_OK;
sSnepClientPutState = NFA_STATUS_FAILED;
}
}
/* Disconnect from Snep Server */
if (sSnepClientConnectionHandle != 0)
{
SyncEventGuard guard (sNfaSnepClientDisconnEvent);
if(NFA_STATUS_OK != NFA_SnepDisconnect (sSnepClientConnectionHandle, 0x01))
{
status = NFA_STATUS_FAILED;
goto clean_and_return;
}
sNfaSnepClientDisconnEvent.wait();
}
clean_and_return:
NXPLOG_API_D ("%s: return = %d", __FUNCTION__, status);
gSyncMutex.unlock();
return status;
}
INT32 nativeNfcSnep_startServer(nfcSnepServerCallback_t *serverCallback)
{
tNFA_STATUS status = NFA_STATUS_OK;
int ret;
pthread_t snepRespThread;
NXPLOG_API_D ("%s:", __FUNCTION__);
if (serverCallback == NULL)
{
NXPLOG_API_E ("%s: callback is NULL!", __FUNCTION__);
return NFA_STATUS_FAILED;
}
gSyncMutex.lock();
if (!nativeNfcManager_isNfcActive())
{
NXPLOG_API_E ("%s: Nfc not initialized.", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
if (sSnepServerState == SNEP_SERVER_STARTED && serverCallback == sServerCallback)
{
NXPLOG_API_D ("%s: alread started!", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_OK;
}
if (sSnepServerState != SNEP_SERVER_IDLE)
{
NXPLOG_API_E ("%s: Server is started or busy. State = 0x%X", __FUNCTION__, sSnepServerState);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
sServerCallback = serverCallback;
sSnepServerState = SNEP_SERVER_STARTING;
sRfEnabled = isDiscoveryStarted();
if (sRfEnabled)
{
// Stop RF Discovery if we were polling
startRfDiscovery (FALSE);
}
{
SyncEventGuard guard (sNfaSnepServerRegEvent);
if(NFA_STATUS_OK != NFA_SnepRegisterServer(0x04, SNEP_SERVER_NAME, nfaSnepServerCallback))
{
status = NFA_STATUS_FAILED;
sSnepServerState = SNEP_SERVER_IDLE;
sServerCallback = NULL;
goto clean_and_return;
}
sNfaSnepServerRegEvent.wait();
}
ret = pthread_create(&snepRespThread, NULL, snepServerThread, NULL);
if(ret != 0)
{
NXPLOG_API_E("Unable to create snep server thread");
sSnepServerState = SNEP_SERVER_IDLE;
NFA_SnepDeregister(sSnepServerHandle);
sServerCallback = NULL;
status = NFA_STATUS_FAILED;
goto clean_and_return;
}
sSnepServerState = SNEP_SERVER_STARTED;
clean_and_return:
if (sRfEnabled)
{
startRfDiscovery (TRUE);
}
gSyncMutex.unlock();
return status;
}
INT32 nativeNfcLlcp_ConnLessStartServer(nfcllcpConnlessServerCallback_t *serverCallback)
{
tNFA_STATUS status = NFA_STATUS_OK;
int ret;
pthread_t llcpRespThread;
bServerReadState = FALSE;
NXPLOG_API_D ("%s:", __FUNCTION__);
if (serverCallback == NULL)
{
NXPLOG_API_E ("%s: callback is NULL!", __FUNCTION__);
return NFA_STATUS_FAILED;
}
gSyncMutex.lock();
if (!nativeNfcManager_isNfcActive())
{
NXPLOG_API_E ("%s: Nfc not initialized.", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
if (sLlcpServerState == LLCP_SERVER_STARTED && serverCallback == sServerCallback)
{
NXPLOG_API_D ("%s: alread started!", __FUNCTION__);
gSyncMutex.unlock();
return NFA_STATUS_OK;
}
if (sLlcpServerState != LLCP_SERVER_IDLE)
{
NXPLOG_API_E ("%s: Server is started or busy. State = 0x%X", __FUNCTION__, sLlcpServerState);
gSyncMutex.unlock();
return NFA_STATUS_FAILED;
}
sServerCallback = serverCallback;
sLlcpServerState = LLCP_SERVER_STARTING;
sRfEnabled = isDiscoveryStarted();
if (sRfEnabled)
{
/* Stop RF Discovery if we were polling */
startRfDiscovery (FALSE);
}
SyncEventGuard guard (sNfaLlcpServerRegEvent);
if(NFA_STATUS_OK != NFA_P2pRegisterServer ( LLCP_CL_SAP_ID_DEFAULT,
NFA_P2P_LLINK_TYPE,
(char *)LLCP_SERVER_NAME,
nfaLlcpServerCallBack))
{
status = NFA_STATUS_FAILED;
sLlcpServerState = LLCP_SERVER_IDLE;
sServerCallback = NULL;
if (sRfEnabled)
{
/* Rollback to default */
startRfDiscovery (TRUE);
gSyncMutex.unlock();
return status;
}
}
sNfaLlcpServerRegEvent.wait();
gSyncMutex.unlock();
return status;
}
/*******************************************************************************
**
** Function: setLevel
**
** Description: Set the controller's power level.
** level: power level.
**
** Returns: True if ok.
**
*******************************************************************************/
bool PowerSwitch::setLevel (PowerLevel newLevel)
{
static const char fn [] = "PowerSwitch::setLevel";
bool retval = false;
mMutex.lock ();
ALOGD ("%s: level=%s (%u)", fn, powerLevelToString(newLevel), newLevel);
if (mCurrLevel == newLevel)
{
retval = true;
goto TheEnd;
}
if (mCurrLevel == UNKNOWN_LEVEL)
{
ALOGE ("%s: unknown power level", fn);
goto TheEnd;
}
if ( (mCurrLevel == LOW_POWER && newLevel == FULL_POWER) ||
(mCurrLevel == FULL_POWER && newLevel == LOW_POWER) )
{
mMutex.unlock ();
SyncEventGuard g (gDeactivatedEvent);
if (gActivated)
{
ALOGD("%s: wait for deactivation", fn);
gDeactivatedEvent.wait ();
}
mMutex.lock ();
}
switch (newLevel)
{
case FULL_POWER:
if (mCurrDeviceMgtPowerState == NFA_DM_PWR_MODE_OFF_SLEEP)
retval = setPowerOffSleepState (false);
break;
case LOW_POWER:
case POWER_OFF:
if (isPowerOffSleepFeatureEnabled())
retval = setPowerOffSleepState (true);
else if (mDesiredScreenOffPowerState == 1) //.conf file desires full-power
{
mCurrLevel = FULL_POWER;
retval = true;
}
break;
default:
ALOGE ("%s: not handled", fn);
break;
}
ALOGD("%s: actual power level=%s", fn, powerLevelToString(mCurrLevel));
TheEnd:
mMutex.unlock ();
return retval;
}
/*******************************************************************************
**
** Function: nativeNfcTag_doTransceive
**
** Description: Send raw data to the tag; receive tag's response.
** e: JVM environment.
** o: Java object.
** raw: Not used.
** statusTargetLost: Whether tag responds or times out.
**
** Returns: Response from tag.
**
*******************************************************************************/
static jbyteArray nativeNfcTag_doTransceive (JNIEnv* e, jobject, jbyteArray data, jboolean raw, jintArray statusTargetLost)
{
int timeout = NfcTag::getInstance ().getTransceiveTimeout (sCurrentConnectedTargetType);
ALOGD ("%s: enter; raw=%u; timeout = %d", __FUNCTION__, raw, timeout);
bool waitOk = false;
bool isNack = false;
jint *targetLost = NULL;
if (NfcTag::getInstance ().getActivationState () != NfcTag::Active)
{
if (statusTargetLost)
{
targetLost = e->GetIntArrayElements (statusTargetLost, 0);
if (targetLost)
*targetLost = 1; //causes NFC service to throw TagLostException
e->ReleaseIntArrayElements (statusTargetLost, targetLost, 0);
}
ALOGD ("%s: tag not active", __FUNCTION__);
return NULL;
}
NfcTag& natTag = NfcTag::getInstance ();
// get input buffer and length from java call
ScopedByteArrayRO bytes(e, data);
uint8_t* buf = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(&bytes[0])); // TODO: API bug; NFA_SendRawFrame should take const*!
size_t bufLen = bytes.size();
if (statusTargetLost)
{
targetLost = e->GetIntArrayElements (statusTargetLost, 0);
if (targetLost)
*targetLost = 0; //success, tag is still present
}
sSwitchBackTimer.kill ();
ScopedLocalRef<jbyteArray> result(e, NULL);
do
{
{
SyncEventGuard g (sTransceiveEvent);
sTransceiveRfTimeout = false;
sWaitingForTransceive = true;
sRxDataStatus = NFA_STATUS_OK;
sRxDataBuffer.clear ();
tNFA_STATUS status = NFA_SendRawFrame (buf, bufLen,
NFA_DM_DEFAULT_PRESENCE_CHECK_START_DELAY);
if (status != NFA_STATUS_OK)
{
ALOGE ("%s: fail send; error=%d", __FUNCTION__, status);
break;
}
waitOk = sTransceiveEvent.wait (timeout);
}
if (waitOk == false || sTransceiveRfTimeout) //if timeout occurred
{
ALOGE ("%s: wait response timeout", __FUNCTION__);
if (targetLost)
*targetLost = 1; //causes NFC service to throw TagLostException
break;
}
if (NfcTag::getInstance ().getActivationState () != NfcTag::Active)
{
ALOGE ("%s: already deactivated", __FUNCTION__);
if (targetLost)
*targetLost = 1; //causes NFC service to throw TagLostException
break;
}
ALOGD ("%s: response %d bytes", __FUNCTION__, sRxDataBuffer.size());
if ((natTag.getProtocol () == NFA_PROTOCOL_T2T) &&
natTag.isT2tNackResponse (sRxDataBuffer.data(), sRxDataBuffer.size()))
{
isNack = true;
}
if (sRxDataBuffer.size() > 0)
{
if (isNack)
{
//Some Mifare Ultralight C tags enter the HALT state after it
//responds with a NACK. Need to perform a "reconnect" operation
//to wake it.
ALOGD ("%s: try reconnect", __FUNCTION__);
nativeNfcTag_doReconnect (NULL, NULL);
ALOGD ("%s: reconnect finish", __FUNCTION__);
}
else
{
// marshall data to java for return
result.reset(e->NewByteArray(sRxDataBuffer.size()));
if (result.get() != NULL)
{
e->SetByteArrayRegion(result.get(), 0, sRxDataBuffer.size(), (const jbyte *) sRxDataBuffer.data());
}
else
ALOGE ("%s: Failed to allocate java byte array", __FUNCTION__);
} // else a nack is treated as a transceive failure to the upper layers
sRxDataBuffer.clear();
}
} while (0);
sWaitingForTransceive = false;
if (targetLost)
e->ReleaseIntArrayElements (statusTargetLost, targetLost, 0);
ALOGD ("%s: exit", __FUNCTION__);
return result.release();
}
/*******************************************************************************
**
** Function: reSelect
**
** Description: Deactivates the tag and re-selects it with the specified
** rf interface.
**
** Returns: status code, 0 on success, 1 on failure,
** 146 (defined in service) on tag lost
**
*******************************************************************************/
static int reSelect (tNFA_INTF_TYPE rfInterface, bool fSwitchIfNeeded)
{
ALOGD ("%s: enter; rf intf = %d, current intf = %d", __FUNCTION__, rfInterface, sCurrentRfInterface);
sRfInterfaceMutex.lock ();
if (fSwitchIfNeeded && (rfInterface == sCurrentRfInterface))
{
// already in the requested interface
sRfInterfaceMutex.unlock ();
return 0; // success
}
NfcTag& natTag = NfcTag::getInstance ();
tNFA_STATUS status;
int rVal = 1;
do
{
//if tag has shutdown, abort this method
if (NfcTag::getInstance ().isNdefDetectionTimedOut())
{
ALOGD ("%s: ndef detection timeout; break", __FUNCTION__);
rVal = STATUS_CODE_TARGET_LOST;
break;
}
{
SyncEventGuard g (sReconnectEvent);
gIsTagDeactivating = true;
sGotDeactivate = false;
ALOGD ("%s: deactivate to sleep", __FUNCTION__);
if (NFA_STATUS_OK != (status = NFA_Deactivate (TRUE))) //deactivate to sleep state
{
ALOGE ("%s: deactivate failed, status = %d", __FUNCTION__, status);
break;
}
if (sReconnectEvent.wait (1000) == false) //if timeout occurred
{
ALOGE ("%s: timeout waiting for deactivate", __FUNCTION__);
}
}
if (!sGotDeactivate)
{
rVal = STATUS_CODE_TARGET_LOST;
break;
}
if (NfcTag::getInstance ().getActivationState () != NfcTag::Sleep)
{
ALOGE ("%s: tag is not in sleep", __FUNCTION__);
rVal = STATUS_CODE_TARGET_LOST;
break;
}
gIsTagDeactivating = false;
{
SyncEventGuard g2 (sReconnectEvent);
sConnectWaitingForComplete = JNI_TRUE;
ALOGD ("%s: select interface %u", __FUNCTION__, rfInterface);
gIsSelectingRfInterface = true;
if (NFA_STATUS_OK != (status = NFA_Select (natTag.mTechHandles[0], natTag.mTechLibNfcTypes[0], rfInterface)))
{
ALOGE ("%s: NFA_Select failed, status = %d", __FUNCTION__, status);
break;
}
sConnectOk = false;
if (sReconnectEvent.wait (1000) == false) //if timeout occured
{
ALOGE ("%s: timeout waiting for select", __FUNCTION__);
break;
}
}
ALOGD("%s: select completed; sConnectOk=%d", __FUNCTION__, sConnectOk);
if (NfcTag::getInstance ().getActivationState () != NfcTag::Active)
{
ALOGE("%s: tag is not active", __FUNCTION__);
rVal = STATUS_CODE_TARGET_LOST;
break;
}
if (sConnectOk)
{
rVal = 0; // success
sCurrentRfInterface = rfInterface;
}
else
{
rVal = 1;
}
} while (0);
sConnectWaitingForComplete = JNI_FALSE;
gIsTagDeactivating = false;
gIsSelectingRfInterface = false;
sRfInterfaceMutex.unlock ();
ALOGD ("%s: exit; status=%d", __FUNCTION__, rVal);
return rVal;
}
/*******************************************************************************
**
** Function: nativeNfcTag_doPresenceCheck
**
** Description: Check if the tag is in the RF field.
** e: JVM environment.
** o: Java object.
**
** Returns: True if tag is in RF field.
**
*******************************************************************************/
static jboolean nativeNfcTag_doPresenceCheck (JNIEnv*, jobject)
{
ALOGD ("%s", __FUNCTION__);
tNFA_STATUS status = NFA_STATUS_OK;
jboolean isPresent = JNI_FALSE;
// Special case for Kovio. The deactivation would have already occurred
// but was ignored so that normal tag opertions could complete. Now we
// want to process as if the deactivate just happened.
if (NfcTag::getInstance ().mTechList [0] == TARGET_TYPE_KOVIO_BARCODE)
{
ALOGD ("%s: Kovio, force deactivate handling", __FUNCTION__);
tNFA_DEACTIVATED deactivated = {NFA_DEACTIVATE_TYPE_IDLE};
{
SyncEventGuard g (gDeactivatedEvent);
gActivated = false; //guard this variable from multi-threaded access
gDeactivatedEvent.notifyOne ();
}
NfcTag::getInstance().setDeactivationState (deactivated);
nativeNfcTag_resetPresenceCheck();
NfcTag::getInstance().connectionEventHandler (NFA_DEACTIVATED_EVT, NULL);
nativeNfcTag_abortWaits();
NfcTag::getInstance().abort ();
return JNI_FALSE;
}
if (nfcManager_isNfcActive() == false)
{
ALOGD ("%s: NFC is no longer active.", __FUNCTION__);
return JNI_FALSE;
}
if (!sRfInterfaceMutex.tryLock())
{
ALOGD ("%s: tag is being reSelected assume it is present", __FUNCTION__);
return JNI_TRUE;
}
sRfInterfaceMutex.unlock();
if (NfcTag::getInstance ().isActivated () == false)
{
ALOGD ("%s: tag already deactivated", __FUNCTION__);
return JNI_FALSE;
}
{
SyncEventGuard guard (sPresenceCheckEvent);
status = NFA_RwPresenceCheck (NfcTag::getInstance().getPresenceCheckAlgorithm());
if (status == NFA_STATUS_OK)
{
sPresenceCheckEvent.wait ();
isPresent = sIsTagPresent ? JNI_TRUE : JNI_FALSE;
}
}
if (isPresent == JNI_FALSE)
ALOGD ("%s: tag absent", __FUNCTION__);
return isPresent;
}