--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/openenvcore/backend/src/corebackend/userial.cpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,840 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+// Implementation of STDLIB serialports.
+// 
+//
+
+#include <sys/types.h>
+#include <string.h>		// for memcpy
+#include <sys/errno.h>		// for ENOTSOCK
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/serial.h>
+#include <c32comm.h>
+#include "fdesc.h"
+
+//define this to allow the code to be built for ER5U without most of the notifications
+//leave commented out for all notifications
+//#define ER5U_NOTIFICATION_SUPPORT_ONLY
+
+#ifdef _DEBUG
+_LIT(KCSerialDescPanic, "CSerialDesc");
+#endif
+#if defined (__WINSCW__)
+#define PDD_NAME _L("ECDRV")
+#else
+#define PDD_NAME _L("EUART1") 
+#endif
+#define LDD_NAME _L("ECOMM")
+
+
+NONSHARABLE_CLASS(CNotifier) : public CActive
+	{
+	public:
+		CNotifier();
+		~CNotifier();
+		void IssueRequest(TInt aRequest, TInt* aRequestParams=NULL);
+		static CNotifier* NewLC(CSerialDesc* aPort);
+		static CNotifier* NewL(CSerialDesc* aPort);
+		void Construct(CSerialDesc* aPort);
+		void Complete(TInt aVal);
+
+	private:
+		enum RequestTypes {None, DataAvailable, OutputEmpty, Break, Signals, WriteErrors};
+		void DoCancel();
+		void RunL();
+		CSerialDesc * iSerialPort;
+		enum RequestTypes iRequest;
+		TUint iRequestData;
+		TInt* iRequestParams;
+
+} ;
+
+CNotifier::CNotifier() : CActive(CActive::EPriorityStandard), iRequest(None), iRequestData(0), iRequestParams(NULL)
+	{
+	}
+
+
+void CNotifier::IssueRequest(TInt aRequest, TInt* aRequestParams)
+	{
+	iRequestParams = aRequestParams;
+	
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+	if (KNotifyDataAvailable == aRequest)
+		{
+		iRequest = DataAvailable;
+		iSerialPort->NotifyDataAvailable(iStatus);
+		}
+
+	else if (KNotifyOutputEmpty == aRequest)
+		{
+		iRequest = OutputEmpty;
+		iSerialPort->NotifyOutputEmpty(iStatus);
+		}
+	
+	else if (KNotifyBreakInt == aRequest)
+		{
+		iRequest = Break;
+		iSerialPort->NotifyBreak(iStatus);
+		}
+	
+	else if (aRequest & (KNotifyCD|KNotifyCTS|KNotifyDSR|KNotifyRI))	//signals
+		{
+		TUint signalsRequested = 0;
+
+		//build up the mask of signals to request
+		if (aRequest & KNotifyCD) signalsRequested |=  KSignalDCD;
+		if (aRequest & KNotifyCTS) signalsRequested |=  KSignalCTS;
+		if (aRequest & KNotifyDSR) signalsRequested |=  KSignalDSR;
+		if (aRequest & KNotifyRI) signalsRequested |=  KSignalRNG;
+		iRequest = Signals;
+		iSerialPort->NotifySignalChange(iStatus, iRequestData, signalsRequested);
+		}
+	
+	else 
+#endif	//ER5U_NOTIFICATION_SUPPORT_ONLY
+		if (aRequest & (KNotifyFramingError|KNotifyOverrunError|KNotifyParityError))
+		{
+		iRequest = WriteErrors;
+		iSerialPort->NotifyWriteErrors(iStatus, &iRequestData, aRequest);
+		}
+		
+	SetActive();
+	}
+
+void CNotifier::RunL()
+	{
+	//now what!
+	//cancel all the others
+	//use iRequest to determine what we are doing here
+
+	CNotifier** ppn = NULL;
+	switch (iRequest)
+		{
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+
+		case DataAvailable:
+			iSerialPort->iNotifyParamPtr[0] = KNotifyDataAvailable;
+			ppn = &iSerialPort->iDataAvailableNotifier;
+			break;
+
+		case OutputEmpty:
+			iSerialPort->iNotifyParamPtr[0] = KNotifyOutputEmpty;
+			ppn = &iSerialPort->iOutputEmptyNotifier;
+			break;
+
+		case Break:
+			iSerialPort->iNotifyParamPtr[0] = KNotifyBreakInt;
+			ppn = &iSerialPort->iBreakNotifier;
+			break;
+
+		case Signals:
+			{
+			ppn = &iSerialPort->iSignalsNotifier;
+			iSerialPort->iNotifyParamPtr[0] = 0;
+			iSerialPort->iNotifyParamPtr[1] = 0;
+			if (iRequestData & KDCDChanged)
+				{
+				iSerialPort->iNotifyParamPtr[0] |=  KNotifyCD;
+				iSerialPort->iNotifyParamPtr[1] |=  (iRequestData & KSignalDCD);
+				}
+
+			if (iRequestData & KCTSChanged)
+				{
+				iSerialPort->iNotifyParamPtr[0] |=  KNotifyCTS;
+				iSerialPort->iNotifyParamPtr[1] |=  (iRequestData & KSignalCTS);
+				}
+
+			if (iRequestData & KDSRChanged)
+				{
+				iSerialPort->iNotifyParamPtr[0] |=  KNotifyDSR;
+				iSerialPort->iNotifyParamPtr[1] |=  (iRequestData & KSignalDSR);
+				}
+
+			if (iRequestData & KRNGChanged)
+				{
+				iSerialPort->iNotifyParamPtr[0] |=  KNotifyRI;
+				iSerialPort->iNotifyParamPtr[1] |=  (iRequestData & KSignalRNG);
+				}
+
+			}
+			break;
+#endif //ER5U_NOTIFICATION_SUPPORT_ONLY
+		case WriteErrors:
+			{
+			iSerialPort->iNotifyParamPtr[0] = iRequestData;
+			iSerialPort->iNotifyParamPtr[1] = 0;
+			ppn = &iSerialPort->iErrorsNotifier;
+			}
+			break;
+
+		default:
+			__ASSERT_DEBUG(EFalse, User::Panic(KCSerialDescPanic, 1));
+			break;
+		}
+
+	//cancel all the others
+	iSerialPort->CancelNotifiers(this);	//telling it who we are.
+
+	//and complete the outstanding user request
+	User::RequestComplete(iSerialPort->iNotifyStatus, iStatus.Int());
+	delete this;
+	if (ppn) *ppn = NULL;
+	}
+
+void CNotifier::DoCancel()
+	{
+	switch (iRequest)
+		{
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+
+		case DataAvailable:
+			iSerialPort->NotifyDataAvailableCancel();
+			break;
+
+		case OutputEmpty:
+			iSerialPort->NotifyOutputEmptyCancel();
+			break;
+
+		case Break:
+			iSerialPort->NotifyBreakCancel();
+			break;
+
+		case Signals:
+			iSerialPort->NotifySignalChangeCancel();
+			break;
+#endif //ER5U_NOTIFICATION_SUPPORT_ONLY
+		case WriteErrors:
+			iSerialPort->NotifyWriteErrorsCancel();
+			break;
+
+		default:
+			break;
+		}
+
+
+	}
+
+
+void CNotifier::Complete(TInt aVal)
+	{
+	TRequestStatus* ps = &iStatus;
+	User::RequestComplete(ps, aVal);
+	}
+
+
+CNotifier* CNotifier::NewLC(CSerialDesc* aPort)
+	{
+	CNotifier* self=new (ELeave) CNotifier;
+	CleanupStack::PushL(self);
+	self->Construct(aPort);
+	return self;
+	}
+
+CNotifier* CNotifier::NewL(CSerialDesc* aPort)
+	{
+	CNotifier* self = NewLC(aPort);
+	CleanupStack::Pop();
+	return self;
+	}
+
+void CNotifier::Construct(CSerialDesc* aPort)
+	{
+	iSerialPort = aPort;
+	CActiveScheduler::Add(this) ;  // add to active scheduler
+	}
+
+CNotifier::~CNotifier()
+	{
+	Cancel();
+	}
+
+
+
+
+
+
+// The Serial descriptor class
+TInt CSerialDesc::Open(const wchar_t* name, int mode, int /*perms*/)
+	{
+	TInt err;
+	
+	RCommServ& commSession = Backend()->CommServSession();
+	if (!commSession.Handle())	
+		{
+		err = commSession.Connect();	//connect to the server
+		if(err != KErrNone)
+			return err;
+		}
+	
+	//Acquire the Lock before issuing a request to the server and release it later
+	RFastLock& lock = Backend()->CommsSessionLock();
+	lock.Wait();
+	//the name will be a wide version of COM?: or IRCOM?: where ? is a number 1 to 9.
+	//this has already been checked in the call to CFileDescBase open.
+	err = KErrArgument;
+	//Loads the physical device driver (PDD) with the specified filename.
+	err = User::LoadPhysicalDevice (PDD_NAME);
+	if (KErrAlreadyExists != err && KErrNone != err)
+		{
+		lock.Signal();
+		return err;
+		}
+	//Loads the logical device driver (LDD) with the specified filename.
+	err = User::LoadLogicalDevice (LDD_NAME); 
+	if (KErrAlreadyExists != err && KErrNone != err)
+		{
+		lock.Signal();
+		return err;
+		}
+
+	if (L'C' == name[0])
+		{
+		//load the comms module we require
+		err = commSession.LoadCommModule(_L("ECUART"));
+		if (KErrAlreadyExists != err && KErrNone != err)	//problem
+			{	
+			lock.Signal();
+			return err;
+			}
+		//convert the name into an epoc port name
+		//eg COMM::0
+		TBuf<7> epocName(_L("COMM::0"));
+		epocName[6] = (TText)(name[3] - 1);
+
+		//try opening as a dte or a dce
+		err = iCommPort.Open(commSession, epocName, (enum TCommAccess)mode, ECommRoleDTE);
+		if (err) 			
+			err = iCommPort.Open(commSession, epocName, (enum TCommAccess)mode, ECommRoleDCE);
+		}
+	else
+		{
+		//IR port
+		err = commSession.LoadCommModule(_L("IrCOMM"));
+		if (KErrAlreadyExists != err && KErrNone != err)	//problem
+			{	
+			lock.Signal();
+			return err;
+			}
+		//convert the name into an epoc port name
+		//eg COMM::0
+		TBuf<9> epocName(_L("IrCOMM::0"));
+		epocName[8] = (TText)(name[5] - 1);
+
+		//try opening as a dte or a dce
+		err = iCommPort.Open(commSession, epocName, (enum TCommAccess)mode, ECommRoleDTE);
+		if (err) 			
+			err = iCommPort.Open(commSession, epocName, (enum TCommAccess)mode, ECommRoleDCE);
+		}
+			
+	lock.Signal();
+	return err;
+	}
+
+void CSerialDesc::UserClose()
+	{
+	IoctlCancel();
+	}
+
+TInt CSerialDesc::FinalClose()
+	{
+	iCommPort.Close();
+	return 0;
+	}
+
+TBool CSerialDesc::TimedRead()
+	{
+		//if we have a timeout without a threshold we need an external timer
+		return (-1 != iReadTimeout && -1 == iReadThreshold);
+	}
+
+void CSerialDesc::Read(TDes8& aBuf, TRequestStatus& aStatus)
+	{
+	//do a read..
+	//4 different ones
+	if (-1 == iReadThreshold)
+		{
+		iCommPort.ReadOneOrMore(aStatus, aBuf);
+		}
+	else
+		{
+		TInt len = (iReadThreshold < aBuf.MaxLength() ? iReadThreshold : aBuf.MaxLength());
+		if (-1 == iReadTimeout)
+			{
+			//read threshold with no timeout
+			iCommPort.Read(aStatus, aBuf, len);
+			}
+		else
+			{
+			//read threshold and timeout
+			TTimeIntervalMicroSeconds32 timeout(iReadTimeout*1000);
+			iCommPort.Read(aStatus, timeout, aBuf, len);
+			}
+		}
+	}
+
+
+void CSerialDesc::Write (TDes8& aBuf, TRequestStatus& aStatus)
+	{
+	iCommPort.Write(aStatus, aBuf);
+	}
+
+TInt CSerialDesc:: WriteCompletion(TDes8& aDesc, TInt aStatus)
+	{
+	if(aStatus == KErrNone)
+		return aDesc.Length();
+	return aStatus;
+	}
+
+
+void CSerialDesc::Ioctl(int aCmd, void* aParam, TRequestStatus& aStatus)
+	{
+	TInt ret=KErrNone;
+	if (aParam)
+		{
+		
+		aCmd &= ~0x4000;	//mask off the queue bit!
+
+		switch (aCmd)
+			{
+			case COMMIOCTL_SETSIGNALS:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				TUint setMask = (TUint)param[0];
+				TUint clearMask = (TUint)param[1];
+				iCommPort.SetSignals(setMask, clearMask);
+				}
+				break;
+
+			case COMMIOCTL_GETSIGNALS:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				TUint signals = iCommPort.Signals();
+				*param = (int)signals;
+				}
+				break;
+
+			case COMMIOCTL_SETCONFIG:	
+				{
+				SerialConfig * param = reinterpret_cast<SerialConfig*> (aParam);
+				TCommConfig cfg;
+
+				TCommConfigV01& cfg01 =cfg();
+				
+				cfg01.iRate = (enum TBps)param->iRate; 
+				cfg01.iDataBits = (enum TDataBits)param->iDataBits;
+				cfg01.iStopBits = (enum TStopBits)param->iStopBits; 
+				cfg01.iParity = (enum TParity)param->iParity; 
+				cfg01.iHandshake = param->iHandshake;
+				cfg01.iParityError = param->iParityError;
+				cfg01.iFifo = param->iFifo;
+				cfg01.iSpecialRate = param->iSpecialRate;
+				cfg01.iTerminatorCount = param->iTerminatorCount;
+				cfg01.iXonChar = param->iXonChar; 
+				cfg01.iXoffChar = param->iXoffChar; 
+				cfg01.iParityErrorChar = param->iParityErrorChar; 
+				cfg01.iSIREnable = (enum TSir)param->iSIREnable; 
+				cfg01.iSIRSettings = param->iSIRSettings;
+
+				for (int i =0; i < ConfigMaxTerminators; i++)
+					cfg01.iTerminator[i] = param->iTerminator[i];
+
+				iCommPort.SetConfig(cfg);
+				}
+				break;
+
+			case COMMIOCTL_GETCONFIG:	
+				{
+				SerialConfig * param = reinterpret_cast<SerialConfig*> (aParam);
+				TCommConfig cfg;
+				iCommPort.Config(cfg);
+				TCommConfigV01& cfg01 =cfg();
+				
+				param->iRate = (enum Bps)cfg01.iRate;
+				param->iDataBits = (enum DataBits)cfg01.iDataBits;
+				param->iStopBits = (enum StopBits)cfg01.iStopBits;
+				param->iParity = (enum Parity)cfg01.iParity;
+				param->iHandshake = cfg01.iHandshake;
+				param->iParityError = cfg01.iParityError;
+				param->iFifo = cfg01.iFifo;
+				param->iSpecialRate = cfg01.iSpecialRate;
+				param->iTerminatorCount = cfg01.iTerminatorCount;
+				for (int i =0; i < ConfigMaxTerminators; i++)
+					param->iTerminator[i] = cfg01.iTerminator[i];
+				param->iXonChar = cfg01.iXonChar;
+				param->iXoffChar = cfg01.iXoffChar;
+				param->iParityErrorChar = cfg01.iParityErrorChar;
+				param->iSIREnable = (enum Sir)cfg01.iSIREnable;
+				param->iSIRSettings = cfg01.iSIRSettings;
+				}
+				break;
+
+			case COMMIOCTL_BREAK:	
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				TTimeIntervalMicroSeconds32 time(*param);
+				iCommPort.Break(aStatus, time);
+				return;
+				}
+
+			case COMMIOCTL_SETREADTIMEOUT:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				iReadTimeout = *param;
+				}
+				break;
+
+			case COMMIOCTL_GETREADTIMEOUT:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				*param = iReadTimeout;
+				}
+				break;
+
+			case COMMIOCTL_SETREADTHRESHOLD:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				iReadThreshold = *param;
+				}
+				break;
+
+			case COMMIOCTL_GETREADTHRESHOLD:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				*param = iReadThreshold;
+				}
+				break;
+
+			case COMMIOCTL_SETBUFFERLENGTH:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				iCommPort.SetReceiveBufferLength(TInt(*param));
+				}
+				break;
+
+			case COMMIOCTL_GETBUFFERLENGTH:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				*param = iCommPort.ReceiveBufferLength();
+				}
+				break;
+
+			case COMMIOCTL_NOTIFYSUPPORTED:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				*param = NotifiesSupported();
+				}
+				break;
+
+			case REAL_COMMIOCTL_NOTIFY:
+				{
+				int* param = reinterpret_cast<int*> (aParam);
+				//if they are supported
+				if (RequestedNotifiesSupported(*param))
+					{
+					//see if we need real notifications or we are to fake them
+					//always use aStatus for the final thing
+					TBool wantDataAvailable = *param & KNotifyDataAvailable;
+					TBool wantOutputEmpty = *param & KNotifyOutputEmpty;
+					TBool wantBreakInt = *param & KNotifyBreakInt;
+					TBool wantSignals = *param & (KNotifyCD|KNotifyCTS|KNotifyDSR|KNotifyRI);
+					TBool wantErrors = *param & (KNotifyFramingError|KNotifyOverrunError|KNotifyParityError);
+
+					iDataAvailableNotifier = NULL;
+					iOutputEmptyNotifier = NULL;
+					iBreakNotifier = NULL;
+					iSignalsNotifier = NULL;
+					iErrorsNotifier = NULL;
+
+					TRAPD(tRes,
+						{
+						if (wantDataAvailable) iDataAvailableNotifier = CNotifier::NewL(this);
+						if (wantOutputEmpty) iOutputEmptyNotifier = CNotifier::NewL(this);
+						if (wantBreakInt) iBreakNotifier = CNotifier::NewL(this);
+						if (wantSignals) iSignalsNotifier = CNotifier::NewL(this);
+						if (wantErrors) iErrorsNotifier = CNotifier::NewL(this);
+						});
+					
+					if (KErrNone == tRes)
+						{
+						//smashing, no failure, request those events
+						if (wantDataAvailable) iDataAvailableNotifier->IssueRequest(KNotifyDataAvailable);
+						if (wantOutputEmpty) iOutputEmptyNotifier->IssueRequest(KNotifyOutputEmpty);
+						if (wantBreakInt) iBreakNotifier->IssueRequest(KNotifyBreakInt);
+						if (wantSignals) iSignalsNotifier->IssueRequest(*param & (KNotifyCD|KNotifyCTS|KNotifyDSR|KNotifyRI));
+						if (wantErrors) iErrorsNotifier->IssueRequest(*param & (KNotifyFramingError|KNotifyOverrunError|KNotifyParityError));
+
+						iRequestedSignals = *param;
+						iNotifyParamPtr = reinterpret_cast<unsigned int*> (aParam);
+						iNotifyStatus = &aStatus;
+						aStatus = KRequestPending;
+						return;			//on an async call here
+						}
+					else
+						{
+						//deal with the problem
+						//we're going to have to tidy up, delete things etc
+						delete iDataAvailableNotifier;
+						delete iOutputEmptyNotifier;
+						delete iBreakNotifier;
+						delete iSignalsNotifier;
+						delete iErrorsNotifier;
+						iDataAvailableNotifier = NULL;
+						iOutputEmptyNotifier = NULL;
+						iBreakNotifier = NULL;
+						iSignalsNotifier = NULL;
+						iErrorsNotifier = NULL;
+						ret = tRes;
+						}
+
+					}
+				else
+					{
+					ret = KErrNotSupported;
+					*param &=~NotifiesSupported();
+					}
+				}
+				break;
+
+				
+			default:
+				ret=KErrNotSupported;
+				break;
+			}
+		}
+		else
+			ret = KErrArgument;
+ 
+	Complete(aStatus,ret);
+	}
+
+
+TInt CSerialDesc::IoctlCompletion(int /*aCmd*/, void* /*aParam*/, TInt aStatus)
+	{
+	return aStatus;
+	}
+
+
+void CSerialDesc::ReadCancel()
+	{
+	iCommPort.ReadCancel();
+	}
+
+
+void CSerialDesc::IoctlCancel()
+	{
+	//stop the ioctl if in progress
+	CancelNotifiers(NULL);
+
+	if (iNotifyStatus)
+		{
+		iNotifyParamPtr[0] = 0;
+		Complete(*iNotifyStatus, -3);
+		}
+
+	}
+
+TInt CSerialDesc::ReadCompletion (TDes8& aBuf, TInt aStatus)
+	{
+	//The read has completed.  
+	//See if we need to signal 'cos it completed with an error and someone is waiting 
+	//on a notification.  In which case we need to complete the request with the correct results.
+	
+	if ((aStatus < 0) && (iRequestedSignals&(KNotifyFramingError|KNotifyOverrunError|KNotifyParityError)))	//we have a signal outstanding we can deal with here
+		{
+		switch (aStatus)
+			{
+			case KErrCommsFrame:	//comms framing error
+				if (iRequestedSignals&KNotifyFramingError)
+					Notify(KNotifyFramingError);
+				break;
+
+			case KErrCommsOverrun:	//comms overrrun error
+ 				if (iRequestedSignals&KNotifyOverrunError)
+					Notify(KNotifyOverrunError);
+				break;
+
+			case KErrCommsParity:	//comms parity error
+ 				if (iRequestedSignals&KNotifyParityError)
+					Notify(KNotifyParityError);
+				break;
+			
+			default:
+				//an error we don't signal
+				break;
+
+			}
+		}
+	
+	return aBuf.Length();
+	}
+
+TBool CSerialDesc::RequestedNotifiesSupported(TInt aRequested)
+	{
+	//return true if these notifies are OK.  0 if any of them are illegal
+
+	TInt mask = ~(NotifiesSupported());
+	return !(aRequested&mask);
+	}
+
+TInt CSerialDesc::NotifiesSupported()
+	{
+	//return which notifies are supported.
+	//looks like the driver/server is going to have to be interrogated here
+
+	//start with the ones we can fake
+	TInt supported = KNotifyFramingError|KNotifyOverrunError|KNotifyParityError;
+	
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+	//get the supported ones from C32
+	TCommCaps2 devCap;
+	TCommCapsV02& deviceCapabilities = devCap();
+	deviceCapabilities.iNotificationCaps = 0;
+	iCommPort.Caps(devCap);
+
+
+	//signals
+	if (deviceCapabilities.iNotificationCaps & KNotifySignalsChangeSupported)
+		supported |= (KNotifyCD|KNotifyCTS|KNotifyDSR|KNotifyRI);
+
+	//break interrupt
+	if (deviceCapabilities.iNotificationCaps & KNotifyBreakSupported)
+		supported |= KNotifyBreakInt;
+
+
+	//Data Available
+	if (deviceCapabilities.iNotificationCaps & KNotifyDataAvailableSupported)
+		supported |= KNotifyDataAvailable;
+
+	//Output Empty
+	if (deviceCapabilities.iNotificationCaps & KNotifyOutputEmptySupported)
+		supported |= KNotifyOutputEmpty;
+
+#endif  //ER5U_NOTIFICATION_SUPPORT_ONLY
+
+	return supported;
+	}
+
+void CSerialDesc::Notify(TInt aVal)
+	{
+	if (iErrorsNotifier)
+		{
+//		iNotifyParamPtr[0] = aVal;
+		*iRequestDataPtr = aVal;
+		iErrorsNotifier->Complete(0);
+		}
+	}
+
+
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+void CSerialDesc::NotifyDataAvailable(TRequestStatus& aStatus)
+	{
+	iCommPort.NotifyDataAvailable(aStatus);
+	}
+
+void CSerialDesc::NotifyDataAvailableCancel()
+	{
+	iCommPort.NotifyDataAvailableCancel();
+	}
+
+void CSerialDesc::NotifyOutputEmpty(TRequestStatus& aStatus)
+	{
+	iCommPort.NotifyOutputEmpty(aStatus);
+	}
+
+void CSerialDesc::NotifyOutputEmptyCancel()
+	{
+	iCommPort.NotifyOutputEmptyCancel();
+	}
+
+void CSerialDesc::NotifyBreak(TRequestStatus& aStatus)
+	{
+	iCommPort.NotifyBreak(aStatus);
+	}
+
+void CSerialDesc::NotifyBreakCancel()
+	{
+	iCommPort.NotifyBreakCancel();
+	}
+
+void CSerialDesc::NotifySignalChange(TRequestStatus& aStatus, TUint& aRequestData, TUint aSignalsMask)
+	{
+	iCommPort.NotifySignalChange(aStatus, aRequestData, aSignalsMask);
+	}
+
+void CSerialDesc::NotifySignalChangeCancel()
+	{
+	iCommPort.NotifySignalChangeCancel();
+	}
+#endif  //ER5U_NOTIFICATION_SUPPORT_ONLY
+
+void CSerialDesc::NotifyWriteErrors(TRequestStatus& aStatus, TUint* aRequestData, TUint aSignalsMask)
+	{
+	iRequestedSignals = aSignalsMask;
+	iRequestDataPtr = aRequestData;
+//	iNotifyParamPtr = aRequestData;
+	aStatus = KRequestPending;
+	}
+
+void CSerialDesc::NotifyWriteErrorsCancel()
+	{
+	iErrorsNotifier->Complete(KErrCancel);
+	}
+
+TUint CSerialDesc::Signals()
+	{
+	return iCommPort.Signals();
+	}
+
+
+void CSerialDesc::CancelNotifiers(const CNotifier* aCompletedNotifier)
+	{
+#ifndef ER5U_NOTIFICATION_SUPPORT_ONLY
+	if (iDataAvailableNotifier && (aCompletedNotifier != iDataAvailableNotifier))
+		{
+		iDataAvailableNotifier->Cancel();
+		delete iDataAvailableNotifier;
+		iDataAvailableNotifier = NULL;
+		}
+
+	if (iOutputEmptyNotifier && (aCompletedNotifier != iOutputEmptyNotifier))
+		{
+		iOutputEmptyNotifier->Cancel();
+		delete iOutputEmptyNotifier;
+		iOutputEmptyNotifier = NULL;
+		}
+	
+	if (iBreakNotifier && (aCompletedNotifier != iBreakNotifier))
+		{
+		iBreakNotifier->Cancel();
+		delete iBreakNotifier;
+		iBreakNotifier = NULL;
+		}
+
+
+	if (iSignalsNotifier && (aCompletedNotifier != iSignalsNotifier))
+		{
+		iSignalsNotifier->Cancel();
+		delete iSignalsNotifier;
+		iSignalsNotifier = NULL;
+		}
+#endif //ER5U_NOTIFICATION_SUPPORT_ONLY
+	if (iErrorsNotifier && (aCompletedNotifier != iErrorsNotifier))
+		{
+		iErrorsNotifier->Cancel();
+		delete iErrorsNotifier;
+		iErrorsNotifier = NULL;
+		}
+	}
+