--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/plugins/sensors/symbian/compasssym.cpp	Mon May 03 13:18:40 2010 +0300
@@ -0,0 +1,145 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "compasssym.h"
+
+/**
+ * set the id of the accelerometer sensor
+ */
+const char *CCompassSym::id("sym.compass");
+
+/**
+ * Factory function, this is used to create the compass object
+ * @return CCompassSym if successful, leaves on failure
+ */
+CCompassSym* CCompassSym::NewL(QSensor *sensor)
+    {
+    CCompassSym* self = new (ELeave) CCompassSym(sensor);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;    
+    }
+
+/**
+ * Destructor
+ * Closes the backend resources
+ */
+CCompassSym::~CCompassSym()
+    {
+    delete iMagnetometer;
+    Close();
+    }
+
+/**
+ * Default constructor
+ */
+CCompassSym::CCompassSym(QSensor *sensor):CSensorBackendSym(sensor)
+    {
+    setReading<QCompassReading>(&iReading);
+    iBackendData.iSensorType = KSensrvChannelTypeIdMagneticNorthData;
+    }
+
+/**
+ * start() overrides CSensorBackendSym::start()
+ * This is to allow starting magnetometer before stopping the compass 
+ */
+void CCompassSym::start()
+    {
+    // start the magnetometer
+    iMagnetometer->start();
+    // start the compass backend
+    CSensorBackendSym::start();
+    }
+
+/**
+ * stop() overrides CSensorBackendSym::stop()
+ * This is to allow stopping magnetometer before stopping the compass 
+ */
+void CCompassSym::stop()
+    {
+    // stop the magnetometer
+    iMagnetometer->stop();
+    // start the compass backend
+    CSensorBackendSym::stop();
+    }
+
+/*
+ * RecvData is used to retrieve the sensor reading from sensor server
+ * It is implemented here to handle compass sensor specific
+ * reading data and provides conversion and utility code
+ */  
+void CCompassSym::RecvData(CSensrvChannel &aChannel)
+    {
+    TPckg<TSensrvMagneticNorthData> proxpkg( iData );
+    TInt ret = aChannel.GetData( proxpkg );
+    if(KErrNone != ret)
+        {
+        // If there is no reading available, return without setting
+        return;
+        }
+    // Get a lock on the reading data
+    iBackendData.iReadingLock.Wait();    
+    iReading.setAzimuth(iData.iAngleFromMagneticNorth);
+    // Retrieve and set the calibration level
+    iReading.setCalibrationLevel(iMagnetometer->GetCalibrationLevel());
+    // Set the timestamp
+    iReading.setTimestamp(iData.iTimeStamp.Int64());
+    // Release the lock
+    iBackendData.iReadingLock.Signal();
+    }
+
+/**
+ * Second phase constructor
+ * Initialize the backend resources
+ */
+void CCompassSym::ConstructL()
+    {
+    // Initialize the backend
+    InitializeL();
+    // Create magnetometer, this is required as in sensor server,
+    // calibration data is available only for magnetometer
+    iMagnetometer = CMagnetometerSensorSym::NewL(NULL);
+    // Listen only for property change on magnetometer as we are
+    // interested only in calibration property
+    iMagnetometer->SetListening(EFalse, ETrue);
+    }
+