/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

*

*/

#ifndef __TIMESTAMPTEST_H__

#define __TIMESTAMPTEST_H__

#include <e32cmn.h>

#include <e32ver.h>

#ifndef __KERNEL_MODE__

#include <e32std.h>

#endif

/*

 *  Update by driver when a every time NTimer expires

 */

struct STimestampResult

    {

    TUint64 iDelta;   // difference in timestamp value between this and the last run

    TBool   iLPMEntered; // true if low power modes wich restored timestamp was entered

                         // since last NTimer expiry

    };

/*

 *  Hold time stamp information, for now just freq

 */

struct STimestampTestConfig

    {

    TUint32 iFreq;  

    TUint  iIterations;

    TUint  iRetries;

    TUint  iTimerDurationS;

    TUint  iErrorPercent;

    };

/**

User interface for 'TimestampTest'

*/

class RTimestampTest : public RBusLogicalChannel

	{

public:

	/**

	Structure for holding driver capabilities information

	(Just a version number in this example.)

	*/

	class TCaps

		{

	public:

		TVersion iVersion;

		};

    static TVersion VersionRequired();

    static const TDesC& Name();

public:

	TInt Open();

	void Start(TRequestStatus& aStatus, TInt aNTicks);

    void WaitOnTimer(TRequestStatus& aStatus, STimestampResult& aResult);

	TInt Config(STimestampTestConfig& aConfig);

private:

	/**

	Enumeration of Control messages.

	*/

	enum TControl

		{

        EConfig

		};

	/**

	Enumeration of Request messages.

	*/

	enum TRequest

		{

        EStart,

        EWaitOnTimer,

        EAllRequests=-1        

		};

	// Kernel side LDD channel is a friend

	friend class DTimestampTestChannel;

	};

/**

  The driver's name

  @return The name of the driver

  @internalComponent

*/

inline const TDesC& RTimestampTest::Name()

	{

	_LIT(KTimestampTestName,"TIMESTAMPTEST");

	return KTimestampTestName;

	}

/**

  The driver's version

  @return The version number of the driver

  @internalComponent

*/

inline TVersion RTimestampTest::VersionRequired()

	{

	const TInt KMajorVersionNumber=1;

	const TInt KMinorVersionNumber=0;

	const TInt KBuildVersionNumber=KE32BuildVersionNumber;

	return TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber);

	}

/*

  NOTE: The following methods would normally be exported from a seperate client DLL

  but are included inline in this header file for convenience.

*/

#ifndef __KERNEL_MODE__

/**

  Open a logical channel to the driver

  @return One of the system wide error codes.

*/

TInt RTimestampTest::Open()

	{

	return DoCreate(Name(),VersionRequired(),KNullUnit,NULL,NULL,EOwnerThread);

	}

/**

  Start measuring timestamp intervals in the timer

  @param aStatus request status for aync request

  @param aNTicks number of ticks used with the NTimer in the driver

*/

void RTimestampTest::Start(TRequestStatus& aStatus, TInt aNTicks)

	{

	DoRequest(EStart,aStatus,(TAny*) aNTicks);

	}

/**

  Wait for next timer expiry of aNTicks used in Start function

  @param aStatus request status for aync request

  @param aStatus request status for aync request

*/

void RTimestampTest::WaitOnTimer(TRequestStatus& aStatus, STimestampResult& aResult)

	{

	DoRequest(EWaitOnTimer,aStatus,(TAny*) &aResult);

	}

/**

  Open a logical channel to the driver

  @return One of the system wide error codes.

*/

TInt RTimestampTest::Config(STimestampTestConfig& aConfig)

	{

	return DoControl(EConfig,(TAny*) &aConfig);

	}

#endif  // !__KERNEL_MODE__

#endif