1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Accelerometer sensor implementation

    15  *

    16 */

    17 

    18 

    19 #ifndef CACCELERATORSENSOR_H

    20 #define CACCELERATORSENSOR_H

    21 

    22 // INCLUDES

    23 #include <e32std.h>

    24 #include <e32base.h>

    25 #include <sensrvaccelerometersensor.h>

    26 #include <sensrvchannel.h>

    27 #include <sensrvdatalistener.h>

    28 

    29 #include "csensorbase.h"

    30 

    31 // CLASS DECLARATION

    32 

    33 /**

    34  *  Cacceleratorsensor

    35  *

    36  */

    37 class CAcceleratorSensor : public CSensorBase, public MSensrvDataListener

    38 {

    39 public:

    40     // Constructors and destructor

    41 

    42     /**

    43      * Destructor.

    44      */

    45     ~CAcceleratorSensor();

    46 

    47     /**

    48      * Two-phased constructor.

    49      */

    50     static CAcceleratorSensor* NewL(const TSensrvChannelInfo& aChannelInfo);

    51 

    52     /**

    53      * Two-phased constructor.

    54      */

    55     static CAcceleratorSensor* NewLC(const TSensrvChannelInfo& aChannelInfo);

    56 

    57 public:    // From Sensor

    58     int OpenChannel(SensorListener* aListener);

    59 

    60 public:    // From CSensorBase

    61     virtual HBufC* CreateDescriptionLC();

    62     virtual CSensorBase* DuplicateL();

    63     virtual TReal InterpretValue(TReal aValue);

    64     void StartDataListeningL();

    65     void StartConditionListeningL();

    66     void CancelDataListeningL();

    67     void CloseChannelL();

    68     void StopConditionListeningL();

    69 

    70 private: // New methods

    71     void OpenChannelL();

    72 

    73     void DescriptorAppendChannel(TPtr* aPtr, const RSensrvPropertyList aList,

    74                                  TInt aItemIndex);

    75 protected:

    76     void GetProperty(const RSensrvPropertyList aList,

    77                      const TSensrvPropertyId aPropertyId, const TInt aItemIndex,

    78                      TSensrvProperty& aProperty);

    79 

    80     void GetProperty(const RSensrvPropertyList aList,

    81                      const TSensrvPropertyId aPropertyId,

    82                      const TInt aItemIndex,

    83                      const TInt aArrayIndex,

    84                      TSensrvProperty& aProperty);

    85 

    86 public:    // From MSensrvDataListener

    87     virtual void DataReceived(CSensrvChannel& aChannel, TInt aCount, TInt aDataLost);

    88     void DataError(CSensrvChannel& aChannel, TSensrvErrorSeverity aError);

    89     void GetDataListenerInterfaceL(TUid aInterfaceUid, TAny*& aInterface);

    90 

    91 protected:

    92     /**

    93      * Constructor for performing 1st stage construction

    94      */

    95     CAcceleratorSensor(const TSensrvChannelInfo& aChannelInfo);

    96 

    97     /**

    98      * EPOC default constructor for performing 2nd stage construction

    99      */

   100     void ConstructL();

   101 

   102 protected: // Methods used to differentiate between double value and raw data versions

   103     virtual void Model(TPtr* aPtr);

   104     virtual void DataType(TPtr* aPtr);

   105     virtual void DataUnit(const RSensrvPropertyList aList, TPtr* aPtr);

   106     virtual void DataRange(const RSensrvPropertyList aList,

   107                            TPtr* aPtr);

   108     virtual void CopyData(const TSensrvAccelerometerAxisData aData,

   109                           TInt aIndex);

   110     virtual TInt SensorDescriptionId();

   111 

   112 protected: // Data

   113 

   114     /**

   115      * Channel information

   116      */

   117     TSensrvChannelInfo iChannelInfo;

   118     CSensrvChannel* iChannel;

   119 

   120     // Datas per channel

   121     SensorData* iChannelXData;

   122     SensorData* iChannelYData;

   123     SensorData* iChannelZData;

   124 

   125     // Multplier for scaled measurement values

   126     TReal iScaleFactor;

   127 

   128     // Start time of datalistening

   129     TTime iStartTime;

   130 };

   131 

   132 #endif // CACCELERATORSENSOR_H

   133