--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/datasourcemodules/bluetoothgpspositioningmodule/btgpspsy/src/Init/BTGPSNokGpsDetector.cpp	Fri Jun 04 10:34:15 2010 +0100
@@ -0,0 +1,253 @@
+// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+
+
+// INCLUDE FILES
+#include <e32std.h>
+#include "BTGPSNokGpsDetector.h"
+#include "BTGPSDeviceManager.h"
+#include "BTGPSMessageDef.h"
+#include "BTGPSConnectManager.h"
+#include "BTGPSConstantsManager.h"
+#include "BTGPSRequestHandler.h"
+#include "BTGPSLogging.h"
+#include "BTGPSNmeaParser.h"
+
+// EXTERNAL DATA STRUCTURES
+
+// EXTERNAL FUNCTION PROTOTYPES  
+
+// CONSTANTS
+
+// Timer for sending switch to NMEA mode
+const TInt KBTGPSSwitchToNmeaModeTimer = 300000; //300ms
+
+// Limit of Switch to NMEA mode message count. If not enough valid
+// NMEA message was received, then the device is not a GPS device
+const TInt KBTGPSSwitchToNmeaModeLimit = 10; 
+
+// Number of PNOK message that will be sent
+const TInt KBTGPSNumberOfPnokDetectMsg = 3;
+
+
+
+// MACROS
+
+// LOCAL CONSTANTS AND MACROS
+
+// MODULE DATA STRUCTURES
+
+// LOCAL FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// ============================= LOCAL FUNCTIONS ===============================
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::NewL
+// -----------------------------------------------------------------------------
+CBTGPSNokGpsDetector* CBTGPSNokGpsDetector::NewL(
+        CBTGPSConnectManager& aConnectManager,
+        CBTGPSDeviceManager& aDeviceManager)
+    {
+    CBTGPSNokGpsDetector* self = new (ELeave) CBTGPSNokGpsDetector(
+        aConnectManager,
+        aDeviceManager);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::~CBTGPSNokGpsDetector
+// -----------------------------------------------------------------------------
+CBTGPSNokGpsDetector::~CBTGPSNokGpsDetector()
+    {
+    Cancel();
+    iConnectManager.RemoveMessageListener(*this);
+    delete iTimer;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::ConstructL
+// -----------------------------------------------------------------------------
+void CBTGPSNokGpsDetector::ConstructL()
+    {
+    iTimer = CPeriodic::NewL(CActive::EPriorityStandard);
+
+    //Add message listener
+    iConnectManager.AddMessageListenerL(*this);
+
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::CBTGPSNokGpsDetector
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+CBTGPSNokGpsDetector::CBTGPSNokGpsDetector(
+        CBTGPSConnectManager& aConnectManager,
+        CBTGPSDeviceManager& aDeviceManager)
+    : iConnectManager(aConnectManager),
+      iDeviceManager(aDeviceManager)
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::Detect
+// -----------------------------------------------------------------------------
+TInt CBTGPSNokGpsDetector::Detect()
+    {
+    TRAPD(err, DetectL());
+    return err;
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::DetectL
+// -----------------------------------------------------------------------------
+void CBTGPSNokGpsDetector::DetectL()
+    {
+    TRACESTRING("CBTGPSNokGpsDetector::DetectL start...")
+    //Start Nok GPS detector if it's not started
+
+    if(iTimer->IsActive())
+        {
+        return;
+        }
+
+    //Start timer
+    iTimer->Start(
+        CBTGPSRequestHandler::ConstantsManager().iDelayForPNokGpsDetect, 
+        CBTGPSRequestHandler::ConstantsManager().iDelayForPNokGpsDetect, 
+        TCallBack(TimerCallBack, this));
+    
+    //Send PNok polling message. 
+    iConnectManager.SendMessageL(KNMEAPNOK);
+    iNumPnokPolling = 1;
+    
+    TRACESTRING("CBTGPSNokGpsDetector::DetectL end")
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::Cancel
+// -----------------------------------------------------------------------------
+void CBTGPSNokGpsDetector::Cancel()
+    {
+    if(iTimer!=NULL)
+        {
+        iTimer->Cancel();
+        }
+    }
+
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::HandleMessage
+// -----------------------------------------------------------------------------
+void CBTGPSNokGpsDetector::HandleMessage(const TBTGPSNmeaParser& aParser)
+    {
+    if(!iTimer->IsActive())
+        {
+        return;
+        }
+    TInt deviceType = iDeviceManager.DeviceType();
+    if(deviceType==EBTDeviceTypeUnknown && aParser.IsValid())
+        {
+        iValidNmeaMsg++;
+        TInt sentences = CBTGPSRequestHandler::ConstantsManager().iNumberOfTestNmeaSentences;
+        if(iValidNmeaMsg==sentences)
+            {
+            //Non-Nok GPS
+            TRACESTRING("CBTGPSNokGpsDetector::HandleMsg Non Nok Gps")
+            iDeviceManager.SetBTDeviceType(EBTDeviceTypeNonNokGps);
+            }
+        }
+        
+    
+    if(aParser.MessageId() == ENmeaPNokOk)
+        {
+        //The BT device is Nok GPS
+        TRACESTRING("CBTGPSNokGpsDetector::HandleMessage: Nok GPS");
+        iDeviceManager.SetBTDeviceType(EBTDeviceTypeNokGps);
+        Cancel();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::TimerTick
+// -----------------------------------------------------------------------------
+void CBTGPSNokGpsDetector::TimerTick()
+    {
+    //Cancel periodic timer
+    iTimer->Cancel();
+    
+    if(iNumPnokPolling < KBTGPSNumberOfPnokDetectMsg)
+        {
+        iConnectManager.SendMessage(KNMEAPNOK);
+
+        iNumPnokPolling++;
+        //Start timer
+        iTimer->Start(
+            CBTGPSRequestHandler::ConstantsManager().iDelayForPNokGpsDetect, 
+            CBTGPSRequestHandler::ConstantsManager().iDelayForPNokGpsDetect, 
+            TCallBack(TimerCallBack, this));
+        return;
+        }
+    
+    if(iDeviceManager.DeviceType()!=EBTDeviceTypeUnknown)
+        {
+        //not send switch to NMEA mode message if device
+        //type is known
+        return;
+        }
+
+    if(iSwitchCount>=KBTGPSSwitchToNmeaModeLimit)
+        {
+        //Not a GPS device
+        TRACESTRING("CBTGPSNokGpsDetector::TimerTick: Not GPS")
+        iDeviceManager.SetBTDeviceType(EBTDeviceTypeNonGPS);
+        }
+    else
+        {
+        //Send switch to NMEA mode message and send set to FullPower mode message
+        iConnectManager.SendMessage(KSirfToNMEA);
+        iSwitchCount++;
+        iTimer->Start(
+            KBTGPSSwitchToNmeaModeTimer,
+            KBTGPSSwitchToNmeaModeTimer,
+            TCallBack(TimerCallBack,this));
+        }
+    }
+        
+// -----------------------------------------------------------------------------
+// CBTGPSNokGpsDetector::TimerCallBack
+// -----------------------------------------------------------------------------
+TInt CBTGPSNokGpsDetector::TimerCallBack(TAny* aAny)
+    {
+    reinterpret_cast<CBTGPSNokGpsDetector*>(aAny)->TimerTick();
+    return KErrNone;
+    }
+
+
+
+//  End of File
+
+
+