1 /*

     2  * Name        : Accelerometer.h

     3  * Description : Accelerometer helper class

     4  * Project     : This file is part of OpenMAR, an Open Mobile Augmented Reality browser

     5  * Website     : http://OpenMAR.org

     6  *

     7  * Copyright (c) 2010 David Caabeiro

     8  *

     9  * All rights reserved. This program and the accompanying materials are made available 

    10  * under the terms of the Eclipse Public License v1.0 which accompanies this 

    11  * distribution, and is available at http://www.eclipse.org/legal/epl-v10.html

    12  *

    13  */

    14 

    15 #ifndef ACCELEROMETER_H_

    16 #define ACCELEROMETER_H_

    17 

    18 #include "Vector3d.h"

    19 

    20 #include <SensrvDataListener.h>

    21 

    22 class CSensrvChannel;

    23 

    24 /**

    25  * @brief Wrapper class over sensor channel to retrieve data from 3-axis accelerometer

    26  * 

    27  * This class also implements a simple bandpass filter

    28  */

    29 class CAccelerometer : public CBase, 

    30             public MSensrvDataListener

    31 {

    32 public:

    33     static CAccelerometer* NewL();

    34     ~CAccelerometer();

    35 

    36 protected:

    37     CAccelerometer();

    38     void ConstructL();

    39 

    40 public:

    41     void StartL();

    42     void Stop();

    43 

    44     const Vector3d GetValue() const { return Vector3d(iX1, iY1, iZ1); }

    45 

    46 protected:

    47     // From MSensrvDataListener

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

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

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

    51 

    52 private:

    53     CSensrvChannel* iSensorChannel;

    54 

    55     TReal iX1;

    56     TReal iY1;

    57     TReal iZ0;

    58     TReal iZ1;

    59     TReal iZ2;

    60 };

    61 

    62 #endif