1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // ccomreadwrite.cpp

    15 // 

    16 //

    17 

    18 #include "debug.h"

    19 

    20 #include "comreadwrite.h"

    21 #include "GLOBAL.H"

    22 

    23 #include <e32base.h>

    24 #include <f32file.h>

    25 #include <c32comm.h>

    26 #include <e32cons.h>

    27 

    28 

    29 CComReadWrite::CComReadWrite(TInt aPriority, MComReadWriteObserver& aObserver)

    30 				: CActive(aPriority), iObserver(aObserver)

    31 	{

    32 	}

    33 

    34 CComReadWrite* CComReadWrite::NewL(MComReadWriteObserver& aObserver)

    35 	{

    36 	DEBUG_OPEN();

    37 	COMRWPRINT(_L("CComReadWrite::NewL()\n"));

    38 	

    39 	CComReadWrite* self = new(ELeave) CComReadWrite(EPriorityHigh, aObserver);

    40 	CleanupStack::PushL(self);

    41 	self->ConstructL();

    42 	CleanupStack::Pop();

    43 	return self;

    44 	}

    45 

    46 void CComReadWrite::ConstructL()

    47 	{

    48 	CActiveScheduler::Add(this);

    49 

    50 	COMRWPRINT(_L("CComReadWrite::ConstructL()\n"));

    51 	}

    52 

    53 void CComReadWrite::Open()

    54 	{

    55 	// Connect to Comserver and Open IrComm port

    56 	COMRWPRINT(_L("CComReadWrite::Open()\n"));

    57 	TInt error;

    58 	error = iServer.Connect();

    59 	error = iServer.LoadCommModule(_L("IrCOMM"));

    60 	error = iCommPort.Open(iServer,_L("IRCOMM::0"), ECommExclusive, ECommRoleDCE);

    61 	Signal(error);

    62 	iState = EOpen;

    63 	}

    64 

    65 void CComReadWrite::Close()

    66 	{

    67 	COMRWPRINT(_L("CComReadWrite::Close()\n"));

    68 	Cancel();

    69 	Signal(KErrNone);

    70 	iState = EClose;

    71 	}

    72 

    73 void CComReadWrite::Signal(TInt aError)

    74 	{

    75 	TRequestStatus *pS=(&iStatus);

    76 	SetActive();

    77 	User::RequestComplete(pS,aError);

    78 	}

    79 

    80 CComReadWrite::~CComReadWrite()

    81 	{

    82 	COMRWPRINT(_L("CComReadWrite:: ~CComReadWrite()\n"));

    83 	}

    84 

    85 void CComReadWrite::Send(TDesC8& aBuffer)

    86 	{

    87 	COMRWPRINT(_L("CComReadWrite:: ESend request\n"));

    88 	__ASSERT_DEBUG(aBuffer.Length()<= iTxBuffer.MaxLength(), User::Panic(_L("IrTranP"), KErrTooBig));

    89 	if (!(IsActive()))

    90 		{

    91 		iTxBuffer.Zero();

    92 		iTxBuffer.Copy(aBuffer);

    93 		iCommPort.Write(iStatus, iTxBuffer);

    94 		COMRWPRINT(_L("CComReadWrite:: iCommPort.Write cleared\n"));

    95 		iState = ESend;

    96 		SetActive();

    97 

    98 		}

    99 	else

   100 		{

   101 		COMRWPRINT(_L("CComReadWrite: Error\n"));

   102 		iObserver.SendError(KErrWrite);

   103 		}

   104 

   105 	}

   106 

   107 void CComReadWrite::Receive()

   108 	{

   109 	COMRWPRINT(_L("CComReadWrite: EReceive request\n"));

   110 	

   111 	// Clear the buffer and receive the next lot of data;

   112 

   113 	iRxBuffer.Zero();

   114 	iCommPort.ReadOneOrMore(iStatus, iRxBuffer);

   115 	iState = EReceive;

   116 	SetActive();

   117 	}

   118 

   119 void CComReadWrite::RunL()

   120 	{

   121 	COMRWPRINT(_L("CComReadWrite: RunL()\n"));

   122 	

   123 	switch (iState)

   124 		{

   125 	case EOpen:

   126 		{

   127 		if (iStatus == KErrNone)

   128 			{

   129 			COMRWPRINT(_L("CComReadWrite: EOpen sucessful\n"));

   130 		  	/*TBuf8<1> buf;

   131 			buf.SetLength(0);

   132 			Send(buf);*/

   133 

   134 			Receive();

   135 			}

   136 		else

   137 			{

   138 			iObserver.Error(iStatus.Int());

   139 			}

   140 		}

   141 		break;

   142 	case EStop:

   143 		{

   144 		iCommPort.Close();

   145 		iServer.UnloadCommModule(_L("IrCOMM"));

   146 		iServer.Close();

   147 		iObserver.Error(KErrAbort);

   148 		COMRWPRINT(_L("CComReadWrite: EStop sucessfull\n"));

   149 		}

   150 		break;

   151 	case EClose:

   152 		{

   153 		if (iStatus == KErrNone)

   154 			{

   155 			iCommPort.Close();

   156 			iServer.UnloadCommModule(_L("IrCOMM"));

   157 			iServer.Close();

   158 			COMRWPRINT(_L("CComReadWrite: EClose sucessfull\n"));

   159 			}

   160 		else

   161 			{

   162 			iObserver.Error(iStatus.Int());

   163 			}

   164 		}

   165 		break;

   166 	case ESend: // Send Complete

   167 		if (iStatus == KErrNone)

   168 			{

   169 			COMRWPRINT(_L("CComReadWrite: ESend sucessful\n"));

   170 			iObserver.SendComplete(); // posts read request.

   171 			}

   172 		else

   173 			{

   174 			iObserver.SendError(iStatus.Int());

   175 			}

   176 		break;

   177 	case EReceive:

   178 		{

   179 		if (iStatus == KErrNone)

   180 			{

   181 			COMRWPRINT_2(_L("CComReadWrite: ERecieve sucessful %d\n"),iRxBuffer.Length());

   182 			iObserver.ReceiveComplete(iRxBuffer);

   183 			}

   184 		else

   185 			{

   186 			iObserver.ReceiveError(iStatus.Int());

   187 			}

   188 		}

   189 		break;

   190 	default:

   191 		User::Leave(KErrGeneral);

   192 		break;

   193 		}

   194 	

   195 	}

   196 

   197 void CComReadWrite::DoCancel()

   198 	{

   199 	COMRWPRINT(_L("CComReadWrite: DoCancel()\n"));

   200 

   201 	iCommPort.WriteCancel();

   202 	iCommPort.ReadCancel();

   203 	iState = EStop;

   204 	}