// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "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:

 // e32test/iic/iic_psl/I2c.cpp

 //

 #include "i2c.h"

 #ifdef IIC_INSTRUMENTATION_MACRO

 #include <drivers/iic_trace.h>

 #endif

 #if defined(MASTER_MODE) && !defined(SLAVE_MODE)

 const TInt KChannelTypeArray[NUM_CHANNELS] = {DIicBusChannel::EMaster, DIicBusChannel::EMaster, DIicBusChannel::EMaster};

 #elif defined(MASTER_MODE) && defined(SLAVE_MODE)

 const TInt KChannelTypeArray[NUM_CHANNELS] = {DIicBusChannel::EMaster, DIicBusChannel::ESlave, DIicBusChannel::EMasterSlave};

 #else

 const TInt KChannelTypeArray[NUM_CHANNELS] = {DIicBusChannel::ESlave, DIicBusChannel::ESlave, DIicBusChannel::ESlave};

 #endif

 #define CHANNEL_TYPE(n) (KChannelTypeArray[n])	

 #define CHANNEL_DUPLEX(n) (DIicBusChannel::EHalfDuplex)

 #ifdef STANDALONE_CHANNEL

 _LIT(KPddNameI2c,"i2c_ctrless.pdd");

 #else

 _LIT(KPddNameI2c,"i2c.pdd");

 #endif

 #ifndef STANDALONE_CHANNEL

 LOCAL_C TInt8 AssignChanNum()

 	{

 	static TInt8 iBaseChanNum = KI2cChannelNumBase;

 	I2C_PRINT(("I2C AssignChanNum - on entry, iBaseChanNum = 0x%x\n",iBaseChanNum));

 	return iBaseChanNum++; // Arbitrary, for illustration

 	}

 #endif/*STANDALONE_CHANNEL*/

 #ifdef SLAVE_MODE

 LOCAL_C TInt16 AssignSlaveChanId()

 	{

 	static TInt16 iBaseSlaveChanId = KI2cSlaveChannelIdBase;

 	I2C_PRINT(("I2C AssignSlaveChanId - on entry, iBaseSlaveChanId = 0x%x\n",iBaseSlaveChanId));

 	return iBaseSlaveChanId++; // Arbitrary, for illustration

 	}

 #endif/*SLAVE_MODE*/

 NONSHARABLE_CLASS(DSimulatedI2cDevice) : public DPhysicalDevice

 	{

 // Class to faciliate loading of the IIC classes

 public:

 	class TCaps

 		{

 	public:

 		TVersion iVersion;

 		};

 public:

 	DSimulatedI2cDevice();

 	virtual TInt Install();

 	virtual TInt Create(DBase*& aChannel, TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);

 	virtual TInt Validate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);

 	virtual void GetCaps(TDes8& aDes) const;

 	inline static TVersion VersionRequired();

 	};

 TVersion DSimulatedI2cDevice::VersionRequired()

 	{

 	I2C_PRINT(("DSimulatedI2cDevice::VersionRequired\n"));

 	return TVersion(KIicClientMajorVersionNumber,KIicClientMinorVersionNumber,KIicClientBuildVersionNumber);

 	}

 /** Factory class constructor */

 DSimulatedI2cDevice::DSimulatedI2cDevice()

 	{

 	I2C_PRINT(("DSimulatedI2cDevice::DSimulatedI2cDevice\n"));

     iVersion = DSimulatedI2cDevice::VersionRequired();

 	}

 TInt DSimulatedI2cDevice::Install()

     {

 	I2C_PRINT(("DSimulatedI2cDevice::Install\n"));

     return(SetName(&KPddNameI2c));

     }

 /**  Called by the kernel's device driver framework to create a Physical Channel. */

 TInt DSimulatedI2cDevice::Create(DBase*& /*aChannel*/, TInt /*aUint*/, const TDesC8* /*anInfo*/, const TVersion& /*aVer*/)

     {

 	I2C_PRINT(("DSimulatedI2cDevice::Create\n"));

     return KErrNone;

     }

 /**  Called by the kernel's device driver framework to check if this PDD is suitable for use with a Logical Channel.*/

 TInt DSimulatedI2cDevice::Validate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& aVer)

     {

 	I2C_PRINT(("DSimulatedI2cDevice::Validate\n"));

    	if (!Kern::QueryVersionSupported(DSimulatedI2cDevice::VersionRequired(),aVer))

 		return(KErrNotSupported);

     return KErrNone;

     }

 /** Return the driver capabilities */

 void DSimulatedI2cDevice::GetCaps(TDes8& aDes) const

     {

 	I2C_PRINT(("DSimulatedI2cDevice::GetCaps\n"));

 	// Create a capabilities object

 	TCaps caps;

 	caps.iVersion = iVersion;

 	// Zero the buffer

 	TInt maxLen = aDes.MaxLength();

 	aDes.FillZ(maxLen);

 	// Copy capabilities

 	TInt size=sizeof(caps);

 	if(size>maxLen)

 	   size=maxLen;

 	aDes.Copy((TUint8*)&caps,size);

     }

 // supported channels for this implementation

 static DIicBusChannel* ChannelPtrArray[NUM_CHANNELS];

 //DECLARE_EXTENSION_WITH_PRIORITY(BUS_IMPLMENTATION_PRIORITY)	

 DECLARE_STANDARD_PDD()		// I2c test driver to be explicitly loaded as an LDD, not kernel extension

 	{	

 #ifndef STANDALONE_CHANNEL

 	DIicBusChannel* chan=NULL;

 	for(TInt i=0; i<NUM_CHANNELS; i++)

 		{

 	I2C_PRINT(("\n"));

 #if defined(MASTER_MODE)

 		if(CHANNEL_TYPE(i) == (DIicBusChannel::EMaster))

 			{

 			chan=new DSimulatedIicBusChannelMasterI2c(BUS_TYPE,CHANNEL_DUPLEX(i));

 			if(!chan)

 				return NULL;

 			I2C_PRINT(("I2C chan created at 0x%x\n",chan));

 			if(((DSimulatedIicBusChannelMasterI2c*)chan)->Create()!=KErrNone)

 			    {

 			    delete chan;

 				return NULL;

                 }

 			}

 #endif

 #if defined(MASTER_MODE) && defined(SLAVE_MODE)

 		if(CHANNEL_TYPE(i) == DIicBusChannel::EMasterSlave)

 			{

 			DIicBusChannel* chanM=new DSimulatedIicBusChannelMasterI2c(BUS_TYPE,CHANNEL_DUPLEX(i));

 			if(!chanM)

 				return NULL;

 			DIicBusChannel* chanS=new DSimulatedIicBusChannelSlaveI2c(BUS_TYPE,CHANNEL_DUPLEX(i));

 			if(!chanS)

 			    {

 			    delete chanM;

 				return NULL;

 			    }

 			// For MasterSlave channel, the channel number for both the Master and Slave channels must be the same

 			TInt8 msChanNum = ((DSimulatedIicBusChannelMasterI2c*)chanM)->GetChanNum();

 			((DSimulatedIicBusChannelSlaveI2c*)chanS)->SetChanNum(msChanNum);

 			chan=new DSimulatedIicBusChannelMasterSlaveI2c(BUS_TYPE,CHANNEL_DUPLEX(i),(DSimulatedIicBusChannelMasterI2c*)chanM,(DSimulatedIicBusChannelSlaveI2c*)chanS); // Generic implementation

 			if(!chan)

 			    {

 			    delete chanM;

 			    delete chanS;

 				return NULL;

 			    }

 			I2C_PRINT(("I2C chan created at 0x%x\n",chan));

 			if(((DIicBusChannelMasterSlave*)chan)->DoCreate()!=KErrNone)

 			    {

 			    delete chanM;

 			    delete chanS;

 			    delete chan;

 				return NULL;

 			    }

 			}

 #endif

 #if defined(SLAVE_MODE)

 		if(CHANNEL_TYPE(i) == (DIicBusChannel::ESlave))

 			{

 			chan=new DSimulatedIicBusChannelSlaveI2c(BUS_TYPE,CHANNEL_DUPLEX(i));

 			if(!chan)

 				return NULL;

 			I2C_PRINT(("I2C chan created at 0x%x\n",chan));

 			if(((DSimulatedIicBusChannelSlaveI2c*)chan)->Create()!=KErrNone)

 			    {

 			    delete chan;

 			    return NULL;

 			    }

 			}

 #endif

 #if !defined(MASTER_MODE) && !defined(SLAVE_MODE)

 #error I2C mode not defined as Master, Slave nor Master-Slave

 #endif

 		if(chan == NULL)

 			{

 			I2C_PRINT(("\n\nI2C: Channel of type (%d) not created for index %d\n\n",CHANNEL_TYPE(i),i));

 			return NULL;

 			}

 		ChannelPtrArray[i]=chan;

 		}

 	I2C_PRINT(("\nI2C PDD, channel creation loop done- about to invoke RegisterChannels\n\n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_REGISTERCHANS_START_PSL_TRACE;

 #endif

 	TInt r=DIicBusController::RegisterChannels(ChannelPtrArray,NUM_CHANNELS);

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_REGISTERCHANS_END_PSL_TRACE;

 #endif

 	I2C_PRINT(("\nI2C - returned from RegisterChannels with r=%d\n",r));

 	if(r!=KErrNone)

 		{

 		delete chan;

 		return NULL;

 		}

 #endif

 	return new DSimulatedI2cDevice;

 	}

 #ifdef MASTER_MODE

 #ifdef STANDALONE_CHANNEL

 EXPORT_C

 #endif

 DSimulatedIicBusChannelMasterI2c::DSimulatedIicBusChannelMasterI2c(const TBusType aBusType, const TChannelDuplex aChanDuplex)

 	: DIicBusChannelMaster(aBusType,aChanDuplex)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DSimulatedIicBusChannelMasterI2c, aBusType=%d,aChanDuplex=%d\n",aBusType,aChanDuplex));

 #ifndef STANDALONE_CHANNEL

 	iChannelNumber = AssignChanNum();

 #endif

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DSimulatedIicBusChannelMasterI2c, iChannelNumber=%d\n",iChannelNumber));

 	}

 TInt DSimulatedIicBusChannelMasterI2c::DoCreate()

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoCreate\n"));

 	TInt r=Init();	// PIL Base class initialisation

 	r=Kern::DynamicDfcQCreate(iDynamicDfcQ,KI2cThreadPriority,KI2cThreadName);

 	if(r == KErrNone)

 		SetDfcQ((TDfcQue*)iDynamicDfcQ);

 	DSimulatedIicBusChannelMasterI2c::SetRequestDelayed(this,EFalse);

 	return r;

 	}

 TInt DSimulatedIicBusChannelMasterI2c::CheckHdr(TDes8* aHdr)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::CheckHdr\n"));

 	TConfigI2cBufV01* i2cBuf = (TConfigI2cBufV01*)aHdr;

 	TConfigI2cV01* i2cPtr = &((*i2cBuf)());

 	// Check that the values for address type, clock speed, user operation and endianness are recognised

 	if((i2cPtr->iAddrType < 0) || (i2cPtr->iAddrType > EI2cAddr10Bit))

 		{

 		I2C_PRINT(("ERROR: DSimulatedIicBusChannelMasterI2c::CheckHdr unrecognised address type identifier %d\n",i2cPtr->iAddrType));

 		return KErrArgument;

 		}

 	if(i2cPtr->iClkSpeedHz < 0)

 		{

 		I2C_PRINT(("ERROR: DSimulatedIicBusChannelMasterI2c::CheckHdr negative clock speed specified %d\n",i2cPtr->iClkSpeedHz));

 		return KErrArgument;

 		}

 	if((i2cPtr->iEndianness < 0) || (i2cPtr->iEndianness > ELittleEndian))

 		{

 		I2C_PRINT(("ERROR: DSimulatedIicBusChannelMasterI2c::CheckHdr unrecognised endianness identifier %d\n",i2cPtr->iEndianness));

 		return KErrArgument;

 		}

 	// Values for the timeout period are arbitrary - can only check it is not a negative value

 	if(i2cPtr->iTimeoutPeriod < 0)

 		{

 		I2C_PRINT(("ERROR: DSimulatedIicBusChannelMasterI2c::CheckHdr negative timeout period %d\n",i2cPtr->iTimeoutPeriod));

 		return KErrArgument;

 		}

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::CheckHdr address type = %d\n",i2cPtr->iAddrType));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::CheckHdr clock speed ID = %d\n",i2cPtr->iClkSpeedHz));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::CheckHdr iEndianness ID = %d\n",i2cPtr->iEndianness));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::CheckHdr iTimeoutPeriod = %d\n",i2cPtr->iTimeoutPeriod));

 	return KErrNone;

 	}

 	// Gateway function for PSL implementation, invoked for DFC processing

 TInt DSimulatedIicBusChannelMasterI2c::DoRequest(TIicBusTransaction* aTransaction)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest invoked with aTransaction=0x%x\n",aTransaction));

 	TInt r = KErrNone;

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_MPROCESSTRANS_START_PSL_TRACE;

 #endif

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans aTransaction->iHeader=0x%x\n",GetTransactionHeader(aTransaction)));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans aTransaction->iHalfDuplexTrans=0x%x\n",GetTransHalfDuplexTferPtr(aTransaction)));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans aTransaction->iFullDuplexTrans=0x%x\n",GetTransFullDuplexTferPtr(aTransaction)));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans aTransaction->iCallback=0x%x\n",GetTransCallback(aTransaction)));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans aTransaction->iFlags=0x%x\n",GetTransFlags(aTransaction)));

 	I2C_PRINT(("\nDSimulatedIicBusChannelMasterI2c::DoRequest, iHeader info \n"));

 	TDes8* bufPtr = GetTransactionHeader(aTransaction);

 	if(bufPtr == NULL)

 		{

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest ERROR - NULL header\n"));

 		return KErrCorrupt;

 		}

 	TConfigI2cV01 *buf = (TConfigI2cV01 *)(bufPtr->Ptr());

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest, header address type=0x%x\n",buf->iAddrType));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest, header clock speed=0x%x\n",buf->iClkSpeedHz));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest, header endianness=0x%x\n",buf->iEndianness));

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::DoRequest, header timeout period=0x%x\n",buf->iTimeoutPeriod));

 	(void)buf;	// Silence compiler when I2C_PRINT not used

 	TInt aTime=1000000/NKern::TickPeriod();

 	r = StartSlaveTimeOutTimer(aTime);

 	I2C_PRINT(("\nDSimulatedIicBusChannelMasterI2c::ProcessTrans, iHalfDuplexTrans info \n"));

 	TIicBusTransfer* halfDuplexPtr=GetTransHalfDuplexTferPtr(aTransaction);

 	while(halfDuplexPtr != NULL)

 		{

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans transfer type=0x%x\n",GetTferType(halfDuplexPtr)));

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans granularity=0x%x\n",GetTferBufGranularity(halfDuplexPtr)));

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans transfer buffer=0x%x\n",GetTferBuffer(halfDuplexPtr)));

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans next transfer =0x%x\n",GetTferNextTfer(halfDuplexPtr)));

 		halfDuplexPtr=GetTferNextTfer(halfDuplexPtr);

 		}

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans - End of iHalfDuplexTrans info"));

 	while(IsRequestDelayed(this))

 		{

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans - starting Sleep...\n"));

 		NKern::Sleep(1000);	// 1000 is arbitrary

 		I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans - completed Sleep, check if still delayed\n"));

 		}; 

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::ProcessTrans - exiting\n"));

 	return r;

 	}

 TBool DSimulatedIicBusChannelMasterI2c::IsRequestDelayed(DSimulatedIicBusChannelMasterI2c* aChan)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::IsRequestDelayed invoked for aChan=0x%x\n",aChan));

 	return aChan->iReqDelayed;

 	}

 void DSimulatedIicBusChannelMasterI2c::SetRequestDelayed(DSimulatedIicBusChannelMasterI2c* aChan,TBool aDelay) 

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::SetRequestDelayed invoked for aChan=0x%x, with aDelay=0x%d\n",aChan,aDelay));

 	aChan->iReqDelayed=aDelay;

 	}

 TInt DSimulatedIicBusChannelMasterI2c::HandleSlaveTimeout()

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::HandleSlaveTimeout invoked for this=0x%x\n",this));

 	return KErrTimedOut;

 	}

 TInt DSimulatedIicBusChannelMasterI2c::StaticExtension(TUint aFunction, TAny* aParam1, TAny* aParam2)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::StaticExtension\n"));

 	TInt r = KErrNone;

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_MSTATEXT_START_PSL_TRACE;

 #endif

 	(void)aParam1;

 	(void)aParam2;

 	// Test values of aFunction were shifted left one place by the (test) client driver

 	// Return to its original value.

 	if(aFunction>KTestControlIoPilOffset)

 		aFunction >>= 1;

 	switch(aFunction)

 		{

 		case(RBusDevIicClient::ECtlIoDumpChan):

 			{

 #ifdef _DEBUG

 			DumpChannel();

 #endif

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoBlockReqCompletion):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::Blocking request completion\n"));

 			SetRequestDelayed(this, ETrue);

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoUnblockReqCompletion):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelMasterI2c::Unlocking request completion\n"));

 			SetRequestDelayed(this, EFalse);

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoDeRegChan):

 			{

 #ifndef STANDALONE_CHANNEL

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_DEREGISTERCHAN_START_PSL_TRACE;

 #endif

 			I2C_PRINT(("DSimulatedIicBusChannelMasterI2c: deregister channel\n"));

 			r=DIicBusController::DeRegisterChannel(this);

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_DEREGISTERCHAN_END_PSL_TRACE;

 #endif/*IIC_INSTRUMENTATION_MACRO*/

 #else/*STANDALONE_CHANNEL*/

 			r = KErrNotSupported;

 #endif/*STANDALONE_CHANNEL*/

 			break;

 			}

 		default:

 			{

 			Kern::Printf("aFunction %d is not recognised \n",aFunction);

 			r=KErrNotSupported;

 			}

 		}

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_MSTATEXT_END_PSL_TRACE;

 #endif		

 	return r;

 	}

 //#ifdef MASTER_MODE

 #endif

 #ifdef SLAVE_MODE

 void DSimulatedIicBusChannelSlaveI2c::SlaveAsyncSimCallback(TAny* aPtr)

 	{

 	// To support simulating an asynchronous capture operation

 	// NOTE: this will be invoked in the context of DfcThread1

 	I2C_PRINT(("SlaveAsyncSimCallback\n"));

 	DSimulatedIicBusChannelSlaveI2c* channel = (DSimulatedIicBusChannelSlaveI2c*)aPtr;

 	TInt r=KErrNone;// Just simulate successful capture

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SCAPTCHANASYNC_END_PSL_TRACE;

 #endif

 	channel->ChanCaptureCb(r);

 	}

 #ifdef STANDALONE_CHANNEL

 EXPORT_C

 #endif

 DSimulatedIicBusChannelSlaveI2c::DSimulatedIicBusChannelSlaveI2c(const DIicBusChannel::TBusType aBusType, const DIicBusChannel::TChannelDuplex aChanDuplex)

 	: DIicBusChannelSlave(aBusType,aChanDuplex,0), // 0 to be ignored by base class

 	iBlockedTrigger(0),iBlockNotification(EFalse),

 	iSlaveTimer(DSimulatedIicBusChannelSlaveI2c::SlaveAsyncSimCallback,this)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::DSimulatedIicBusChannelSlaveI2c, aBusType=%d,aChanDuplex=%d\n",aBusType,aChanDuplex));

 #ifndef STANDALONE_CHANNEL

 	iChannelNumber = AssignChanNum();

 #endif

 	iChannelId = AssignSlaveChanId();

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::DSimulatedIicBusChannelSlaveI2c, iChannelNumber=%d, iChannelId=0x%x\n",iChannelNumber,iChannelId));

 	}

 DSimulatedIicBusChannelSlaveI2c::~DSimulatedIicBusChannelSlaveI2c()

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::~DSimulatedIicBusChannelSlaveI2c\n"));

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::DoCreate()

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::DoCreate\n"));

 	TInt r=Init();	// PIL Base class initialisation

 	return r;

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::CaptureChannelPsl(TBool aAsynch)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::CaptureChannelPsl\n"));

 	TInt r = KErrNone;

 	if(aAsynch)

 		{

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SCAPTCHANASYNC_START_PSL_TRACE;

 #endif

 		// To simulate an asynchronous capture operation, just set a timer to expire

 		iSlaveTimer.OneShot(1000, ETrue); // Arbitrary timeout - expiry executes callback in context of DfcThread1

 		}

 	else

 		{

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SCAPTCHANSYNC_START_PSL_TRACE;

 #endif

 		// PSL processing would happen here ...

 		// Expected to include implementation of the header configuration information 

 		I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::CaptureChannelPsl (synchronous) ... no real processing to do \n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SCAPTCHANSYNC_END_PSL_TRACE;

 #endif

 		}

 	return r;

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::ReleaseChannelPsl()

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::ReleaseChannelPsl\n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SRELCHAN_START_PSL_TRACE;

 #endif

 	TInt r = KErrNone;

 	// PSL-specific processing would happen here ...

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::ReleaseChannelPsl ... no real processing to do \n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SRELCHAN_END_PSL_TRACE;

 #endif

 	return r;

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::PrepareTrigger(TInt aTrigger)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::PrepareTrigger\n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 //	IIC_SNOTIFTRIG_START_PSL;

 #endif

 	TInt r=KErrNotSupported;

 	if(aTrigger&EReceive)

 		{

 		I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::PrepareTrigger - prepare hardware for Rx\n"));

 		r=KErrNone;

 		}

 	if(aTrigger&ETransmit)

 		{

 		I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::PrepareTrigger - prepare hardware for Tx\n"));

 		r=KErrNone;

 		}

 	// Check for any additional triggers and make the necessary preparation

 	// ... do nothing in simulated PSL

 	r=KErrNone;

 #ifdef IIC_INSTRUMENTATION_MACRO

 //	IIC_SNOTIFTRIG_END_PSL;

 #endif

 	return r;

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::CheckHdr(TDes8* /*aHdr*/)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::CheckHdr\n"));

 	return KErrNone;

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::DoRequest(TInt aOperation)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::DoRequest\n"));

 	TInt r = KErrNone;

 	switch(aOperation)

 		{

 		case(ESyncConfigPwrUp):

 			{

 			r=CaptureChannelPsl(EFalse);

 			break;

 			};

 		case(EAsyncConfigPwrUp):

 			{

 			r=CaptureChannelPsl(ETrue);

 			break;

 			};

 		case(EPowerDown):

 			{

 			r=ReleaseChannelPsl();

 			break;

 			};

 		case(EAbort):

 			{

 			break;

 			};

 		default:

 			{

 			// The remaining operations are to instigate an Rx, Tx or just prepare for

 			// overrun/underrun/bus error notifications.

 			// Handle all these, and any unsupported operation in the following function

 			r=PrepareTrigger(aOperation);

 			break;

 			};

 		}

 	return r;

 	}

 void DSimulatedIicBusChannelSlaveI2c::ProcessData(TInt aTrigger, TIicBusSlaveCallback*  aCb)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::ProcessData\n"));

 	// fills in iReturn, iRxWords and/or iTxWords

 	//

 	if(aTrigger & ERxAllBytes)

 		{

 		aCb->SetRxWords(iNumWordsWereRx);

 		if(iRxTxUnderOverRun & ERxUnderrun)

 			{

 			aTrigger|=ERxUnderrun;

 			iRxTxUnderOverRun&= ~ERxUnderrun;

 			}

 		if(iRxTxUnderOverRun & ERxOverrun)

 			{

 			aTrigger|=ERxOverrun;

 			iRxTxUnderOverRun&= ~ERxOverrun;

 			}

 		}

 	if(aTrigger & ETxAllBytes)

 		{

 		aCb->SetTxWords(iNumWordsWereTx);

 		if(iRxTxUnderOverRun & ETxUnderrun)

 			{

 			aTrigger|=ETxUnderrun;

 			iRxTxUnderOverRun&= ~ETxUnderrun;

 			}

 		if(iRxTxUnderOverRun & ETxOverrun)

 			{

 			aTrigger|=ETxOverrun;

 			iRxTxUnderOverRun&= ~ETxOverrun;

 			}

 		}

 	aCb->SetTrigger(aTrigger);

 	}

 TInt DSimulatedIicBusChannelSlaveI2c::StaticExtension(TUint aFunction, TAny* aParam1, TAny* aParam2)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c::StaticExtension\n"));

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SSTATEXT_START_PSL_TRACE;

 #endif

 	// Test values of aFunction were shifted left one place by the (test) client driver

 	// and for Slave values the two msb were cleared

 	// Return to its original value.

 	if(aFunction>KTestControlIoPilOffset)

 		{

 		aFunction |= 0xC0000000;

 		aFunction >>= 1;

 		}

 	TInt r = KErrNone;

 	switch(aFunction)

 		{

 		case(RBusDevIicClient::ECtlIoDumpChan):

 			{

 #ifdef _DEBUG

 			DumpChannel();

 #endif

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoDeRegChan):

 			{

 #ifndef STANDALONE_CHANNEL

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: deregister channel\n"));

 			// DIicBusController::DeRegisterChannel just removes the channel from the array of channels available 

 			r=DIicBusController::DeRegisterChannel(this);

 #else

 			r = KErrNotSupported;

 #endif

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoRxWords):

 			{

 			// Simulate receipt of a number of bytes

 			// aParam1 represents the ChannelId

 			// aParam2 specifies the number of bytes

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoRxWords, channelId=0x%x, numBytes=0x%x\n",aParam1,aParam2));

 			// Load the buffer with simulated data

 			if(iRxBuf == NULL)

 				{

 				I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoRxWords, ERROR, iRxBuf == NULL\n"));

 				r=KErrGeneral;

 				break;

 				}

 			// Check for overrun-underrun conditions

 			TInt trigger=ERxAllBytes;

 			iNumWordsWereRx=(TInt8)((TInt)aParam2);

 			iDeltaWordsToRx = (TInt8)(iNumWordsWereRx - iNumRxWords);

 			if(iDeltaWordsToRx>0)

 				{

 				iNumWordsWereRx=iNumRxWords;

 				iRxTxUnderOverRun |= ERxOverrun;

 				}

 			if(iDeltaWordsToRx<0)

 				iRxTxUnderOverRun |= ERxUnderrun;

 			TInt8* ptr=(TInt8*)(iRxBuf+iRxOffset);

 			TInt8 startVal=0x10;

 			for(TInt8 numWords=0; numWords<iNumWordsWereRx; numWords++,startVal++)

 				{

 				for(TInt wordByte=0; wordByte<iRxGranularity; wordByte++,ptr++)

 					{

 					*ptr=startVal;

 					}

 				}

 			if(iBlockNotification == EFalse)

 				{

 				//

 				// Invoke DIicBusChannelSlave::NotifyClient - this will invoke ProcessData and invoke the client callback

 				NotifyClient(trigger);

 				}

 			else

 				{

 				// Save the trigger value to notify when prompted.

 				iBlockedTrigger=trigger;

 				}

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoUnblockNotification):

 			{

 			iBlockNotification=EFalse;

 			NotifyClient(iBlockedTrigger);

 			iBlockedTrigger=0;

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoBlockNotification):

 			{

 			iBlockNotification=ETrue;

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoTxWords):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoTxWords, aParam1=0x%x, aParam2=0x%x\n",aParam1,aParam2));

 			// Simulate transmission of a number of bytes

 			// aParam1 represents the ChannelId

 			// aParam2 specifies the number of bytes

 			// Load the buffer with simulated data

 			if(iTxBuf == NULL)

 				{

 				I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoTxWords, ERROR, iTxBuf==NULL\n"));

 				r=KErrGeneral;

 				break;

 				}

 			// Check for overrun-underrun conditions

 			TInt trigger=ETxAllBytes;

 			iNumWordsWereTx=(TInt8)((TInt)aParam2);

 			iDeltaWordsToTx = (TInt8)(iNumWordsWereTx - iNumTxWords);

 			if(iDeltaWordsToTx>0)

 				{

 				iNumWordsWereTx=iNumTxWords;

 				iRxTxUnderOverRun |= ETxUnderrun;

 				}

 			if(iDeltaWordsToTx<0)

 				iRxTxUnderOverRun |= ETxOverrun;

 			// Initialise the check buffer

 			if(iTxCheckBuf!=NULL)

 				delete iTxCheckBuf;

 			// iTxCheckBuf is a member of class DSimulatedIicBusChannelSlaveI2c, which 

 			// is created here, and deleted not in ~DSimulatedIicBusChannelSlaveI2c()

 			// but from client side. This is because in t_iic, 

 			// we put a memory leak checking macro __KHEAP_MARKEND before

 			// the pdd gets unloaded which will call ~DSimulatedIicBusChannelSlaveI2c().  

 			// If we delete iTxCheckBuf in ~DSimulatedIicBusChannelSlaveI2c(),

 			// we will get a memory leak panic in __KHEAP_MARKEND.

 			// To support the test code, we moved iTxCheckBuf deletion to the client side. 

 			iTxCheckBuf = new TInt8[iNumTxWords*iTxGranularity];

 			memset(iTxCheckBuf,0,(iNumTxWords*iTxGranularity));

 			TInt8* srcPtr=(TInt8*)(iTxBuf+iTxOffset);

 			TInt8* dstPtr=iTxCheckBuf;

 			for(TInt8 numWords=0; numWords<iNumWordsWereTx; numWords++)

 				{

 				for(TInt wordByte=0; wordByte<iTxGranularity; wordByte++)

 					*dstPtr++=*srcPtr++;

 				}

 			if(iBlockNotification == EFalse)

 				{

 				//

 				// Invoke DIicBusChannelSlave::NotifyClient - this will invoke ProcessData and invoke the client callback

 				NotifyClient(trigger);

 				}

 			else

 				{

 				// Save the trigger value to notify when prompted.

 				iBlockedTrigger=trigger;

 				}

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoRxTxWords):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoRxTxWords, aParam1=0x%x, aParam2=0x%x\n",aParam1,aParam2));

 			// Simulate transmission of a number of bytes

 			// aParam1 represents the ChannelId

 			// aParam2 represents a pointer to the two numbers of bytes

 			// Check the buffers are available

 			if(iTxBuf == NULL)

 				{

 				I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoRxTxWords, ERROR, iTxBuf==NULL\n"));

 				r=KErrGeneral;

 				break;

 				}

 			if(iRxBuf == NULL)

 				{

 				I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoRxTxWords, ERROR, iRxBuf==NULL\n"));

 				r=KErrGeneral;

 				break;

 				}

 			// Check for overrun-underrun conditions

 			TInt trigger=ETxAllBytes|ERxAllBytes;

 			iNumWordsWereRx=(TInt8)(*(TInt*)aParam2);

 			TInt* tempPtr=((TInt*)(aParam2));

 			iNumWordsWereTx=(TInt8)(*(++tempPtr));

 			iDeltaWordsToTx = (TInt8)(iNumWordsWereTx - iNumTxWords);

 			if(iDeltaWordsToTx>0)

 				{

 				iNumWordsWereTx=iNumTxWords;

 				iRxTxUnderOverRun |= ETxUnderrun;

 				}

 			if(iDeltaWordsToTx<0)

 				iRxTxUnderOverRun |= ETxOverrun;

 			iDeltaWordsToRx = (TInt8)(iNumWordsWereRx - iNumRxWords);

 			if(iDeltaWordsToRx>0)

 				{

 				iNumWordsWereRx=iNumRxWords;

 				iRxTxUnderOverRun |= ERxOverrun;

 				}

 			if(iDeltaWordsToRx<0)

 				iRxTxUnderOverRun |= ERxUnderrun;

 			// Initialise the buffers

 			if(iTxCheckBuf!=NULL)

 				delete iTxCheckBuf;

 			iTxCheckBuf = new TInt8[iNumTxWords*iTxGranularity];

 			memset(iTxCheckBuf,0,(iNumTxWords*iTxGranularity));

 			TInt8* srcPtr=(TInt8*)(iTxBuf+iTxOffset);

 			TInt8* dstPtr=iTxCheckBuf;

 			TInt8 numWords=0;

 			for(numWords=0; numWords<iNumWordsWereTx; numWords++)

 				{

 				for(TInt wordByte=0; wordByte<iTxGranularity; wordByte++)

 					*dstPtr++=*srcPtr++;

 				}

 			TInt8* ptr=(TInt8*)(iRxBuf+iRxOffset);

 			TInt8 startVal=0x10;

 			for(numWords=0; numWords<iNumWordsWereRx; numWords++,startVal++)

 				{

 				for(TInt wordByte=0; wordByte<iRxGranularity; wordByte++,ptr++)

 					{

 					*ptr=startVal;

 					}

 				}		

 			if(iBlockNotification == EFalse)

 				{

 				//

 				// Invoke DIicBusChannelSlave::NotifyClient - this will invoke ProcessData and invoke the client callback

 				NotifyClient(trigger);

 				}

 			else

 				{

 				// Save the trigger value to notify when prompted.

 				iBlockedTrigger=trigger;

 				}

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoTxChkBuf):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtrlIoTxChkBuf, aParam1=0x%x, aParam2=0x%x\n",aParam1,aParam2));

 			// Return the address of iTxCheckBuf to the address pointed to by a1

 			// Both the simulated bus channel and the slave client are resident in the client process

 			// so the client can use the pointer value for direct access

 			TInt8** ptr = (TInt8**)aParam1;

 			*ptr=iTxCheckBuf;

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoBusError):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c: ECtlIoBusError\n"));

 			NotifyClient(EGeneralBusError);

 			break;

 			}

 		case(RBusDevIicClient::ECtrlIoUpdTimeout):

 			{

 			// For this test, do the following for the Master and Client timeout values:

 			// (1) Read the current timeout value and check that it is set to the default

 			// (2) Check setting to a neagtive value fails

 			// (3) Set it to a new, different value

 			// (4) Read it back to check success

 			// (5) Return to the original value, and readback to confirm

 			I2C_PRINT(("DSimulatedIicBusChannelSlaveI2c ECtrlIoUpdTimeout \n"));

 			TInt timeout = 0;

 			TInt r=KErrNone;

 			// Master timeout

 			timeout=GetMasterWaitTime();

 			if(timeout!=KSlaveDefMWaitTime)

 				{

 				I2C_PRINT(("ERROR: Initial Master Wait time != KSlaveDefMWaitTime (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			r=SetMasterWaitTime(-1);

 			if(r!=KErrArgument)

 				{

 				I2C_PRINT(("ERROR: Attempt to set negative Master wait time not rejected\n"));

 				return KErrGeneral;

 				}

 			r=SetMasterWaitTime(KSlaveDefCWaitTime);

 			if(r!=KErrNone)

 				{

 				I2C_PRINT(("ERROR: Attempt to set new valid Master wait time (%d) rejected\n",KSlaveDefCWaitTime));

 				return KErrGeneral;

 				}

 			timeout=GetMasterWaitTime();

 			if(timeout!=KSlaveDefCWaitTime)

 				{

 				I2C_PRINT(("ERROR: Master Wait time read back has unexpected value (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			r=SetMasterWaitTime(KSlaveDefMWaitTime);

 			if(r!=KErrNone)

 				{

 				I2C_PRINT(("ERROR: Attempt to set reset Master wait time (%d) rejected\n",KSlaveDefMWaitTime));

 				return KErrGeneral;

 				}

 			timeout=GetMasterWaitTime();

 			if(timeout!=KSlaveDefMWaitTime)

 				{

 				I2C_PRINT(("ERROR: Master Wait time read back of reset time has unexpected value (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			// Client timeout

 			timeout=GetClientWaitTime();

 			if(timeout!=KSlaveDefCWaitTime)

 				{

 				I2C_PRINT(("ERROR: Initial Client Wait time != KSlaveDefCWaitTime (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			r=SetClientWaitTime(-1);

 			if(r!=KErrArgument)

 				{

 				I2C_PRINT(("ERROR: Attempt to set negative Client wait time not rejected\n"));

 				return KErrGeneral;

 				}

 			r=SetClientWaitTime(KSlaveDefMWaitTime+1);

 			if(r!=KErrNone)

 				{

 				I2C_PRINT(("ERROR: Attempt to set new valid Client wait time (%d) rejected\n",KSlaveDefMWaitTime));

 				return KErrGeneral;

 				}

 			timeout=GetClientWaitTime();

 			if(timeout!=KSlaveDefMWaitTime+1)

 				{

 				I2C_PRINT(("ERROR: Client Wait time read back has unexpected value (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			r=SetClientWaitTime(KSlaveDefCWaitTime);

 			if(r!=KErrNone)

 				{

 				I2C_PRINT(("ERROR: Attempt to set reset Client wait time (%d) rejected\n",KSlaveDefCWaitTime));

 				return KErrGeneral;

 				}

 			timeout=GetClientWaitTime();

 			if(timeout!=KSlaveDefCWaitTime)

 				{

 				I2C_PRINT(("ERROR: Client Wait time read back of reset time has unexpected value (=%d) \n",timeout));

 				return KErrGeneral;

 				}

 			break;

 			}

 		default:

 			{

 			Kern::Printf("aFunction %d is not recognised \n",aFunction);

 			r=KErrNotSupported;

 			}

 		}

 #ifdef IIC_INSTRUMENTATION_MACRO

 	IIC_SSTATEXT_END_PSL_TRACE;

 #endif

 	return r;

 	}

 //#ifdef MASTER_MODE

 #endif

 #if defined(MASTER_MODE) && defined(SLAVE_MODE)

 #ifdef STANDALONE_CHANNEL

 EXPORT_C

 #endif

 DSimulatedIicBusChannelMasterSlaveI2c::DSimulatedIicBusChannelMasterSlaveI2c(TBusType /*aBusType*/, TChannelDuplex aChanDuplex, DSimulatedIicBusChannelMasterI2c* aMasterChan, DSimulatedIicBusChannelSlaveI2c* aSlaveChan)

 	: DIicBusChannelMasterSlave(EI2c, aChanDuplex, aMasterChan, aSlaveChan)

 	{}

 TInt DSimulatedIicBusChannelMasterSlaveI2c::StaticExtension(TUint aFunction, TAny* /*aParam1*/, TAny* /*aParam2*/)

 	{

 	I2C_PRINT(("DSimulatedIicBusChannelMasterSlaveI2c::StaticExtension, aFunction=0x%x\n",aFunction));

 	TInt r = KErrNone;

 	// Test values of aFunction were shifted left one place by the (test) client driver

 	// Return to its original value.

 	if(aFunction>KTestControlIoPilOffset)

 		aFunction >>= 1;

 	switch(aFunction)

 		{

 		case(RBusDevIicClient::ECtlIoDumpChan):

 			{

 #ifdef _DEBUG

 			DumpChannel();

 #endif

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoDeRegChan):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelMasterSlaveI2c: deregister channel\n"));

 #ifndef STANDALONE_CHANNEL

 			r=DIicBusController::DeRegisterChannel(this);

 #else

 			return KErrNotSupported;

 #endif

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoBlockReqCompletion):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelMasterSlaveI2c::Blocking request completion\n"));

 			((DSimulatedIicBusChannelMasterI2c*)iMasterChannel)->SetRequestDelayed(((DSimulatedIicBusChannelMasterI2c*)iMasterChannel), ETrue);

 			break;

 			}

 		case(RBusDevIicClient::ECtlIoUnblockReqCompletion):

 			{

 			I2C_PRINT(("DSimulatedIicBusChannelMasterSlaveI2c::Unlocking request completion\n"));

 			((DSimulatedIicBusChannelMasterI2c*)iMasterChannel)->SetRequestDelayed(((DSimulatedIicBusChannelMasterI2c*)iMasterChannel), EFalse);

 			break;

 			}

 		default:

 			{

 			Kern::Printf("aFunction %d is not recognised \n",aFunction);

 			r=KErrNotSupported;

 			}

 		}

 	return r;

 	}

 //#if defined(MASTER_MODE) && defined(SLAVE_MODE)

 #endif