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 // Comms IO Mixin

    15 // 

    16 //

    17 

    18 /**

    19  @file

    20  @internalAll 

    21 */

    22 

    23 #ifndef __SCOMM_H__

    24 #define __SCOMM_H__

    25 

    26 #include <c32comm.h>

    27 

    28 class CCommWriter;

    29 class CCommReader;

    30 class MComm

    31 /**

    32 @internalComponent

    33 */

    34 	{

    35 protected:

    36 	MComm();

    37 	virtual ~MComm();

    38 	void CommConstructL(TInt aReadPriority, TInt aWritePriority);

    39 	 TInt CommOpen(const TDesC& aName, TCommAccess aAccess);

    40 	 TInt CommOpen(const TDesC& aDll, const TDesC& aName, TCommAccess aAccess);

    41 	 void CommClose();

    42 	 void CommCancel();

    43 	 void CommWrite(const TDesC8& aDes);

    44 	 void CommWriteReady();

    45 	 void CommWriteCancel();

    46 	 void CommRead(TDes8& aDes);

    47 	 void CommReadOneOrMore(TDes8& aDes);

    48 	 void CommReadReady();

    49 	 void CommReadCancel();

    50 	virtual void CommReadComplete(TInt aStatus)=0;

    51 	virtual void CommWriteComplete(TInt aStatus)=0;

    52 protected:

    53 	friend class CCommWriter;

    54 	friend class CCommReader;

    55 	RCommServ iCommServer;

    56 	RComm iCommPort;

    57 	CCommReader* iCommReader;

    58 	CCommWriter* iCommWriter;

    59 	TBuf8<1> iBuf;

    60 	};

    61 

    62 class CCommReader : public CActive

    63 /**

    64 @internalComponent

    65 */

    66 	{

    67 public:

    68 	CCommReader(MComm* aComm, TInt aPriority);

    69 	virtual ~CCommReader();

    70 	inline void Activate() { SetActive(); }

    71 	inline TRequestStatus& StatusRef() { return iStatus; }

    72 protected:

    73 	virtual void RunL();

    74 	virtual void DoCancel();

    75 private:

    76 	MComm *iComm;

    77 	};

    78 

    79 class CCommWriter : public CActive

    80 /**

    81 @internalComponent

    82 */

    83 	{

    84 public:

    85 	CCommWriter(MComm* aComm, TInt aPriority);

    86 	virtual ~CCommWriter();

    87 	inline void Activate() { SetActive(); }

    88 	inline TRequestStatus& StatusRef() { return iStatus; }

    89 protected:

    90 	virtual void RunL();

    91 	virtual void DoCancel();

    92 private:

    93 	MComm *iComm;

    94 	};

    95 

    96 #endif