//

// * Copyright 2004 Neusoft America Inc.

// * All rights reserved.

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

// * under the terms of the Eclipse Public License v1.0

// * which accompanies this distribution, and is available

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

// *

// * Contributors:

// * Keith Collins (Neusoft America Inc.)  original software development and additional code and modifications.

// * Thomas Gahagen (Neusoft America Inc.)  additional code and modifications.

// * Zhen Yuan (Neusoft America Inc.)  additional code and modifications.

// *

// * Description: This file contains the declaration for class CCommFrameReaderAo.

// *              Class CCommFrameReaderAo is used to request a read from the serial port LDD.

// *              Class CommFrameReaderAo is an active object and is run by the active

// *              scheduler when the LDD has completed the CSY's read request.

// *

//

// CommFrameReader.h

/** @file CommFrameReaderAo.h

 *

 * 

 */

#ifndef _CCOMMFRAMEREADERAO_H_

#define _CCOMMFRAMEREADERAO_H_

#include "CommReadWriteBaseAo.h"

#include "CsyGlobals.h"

class CCsyMsgBufBpFrame;

/** @class CCommFrameReaderAo CommFrameReaderAo.h "CommFrameReaderAo.h"

 *  @brief Class CCommFrameReaderAo is used to request a read from 

 *  the serial port LDD. Class CommFrameReaderAo is an active object

 *  and is run by the active scheduler when the LDD has completed

 *  the CSY's read request. There is one instance of CCommFrameReaderAo.

 */

class CCommFrameReaderAo : public CCommReadWriteBaseAo

	{

public:

	enum TCsyFrameReaderState

		{

		ECsyWaitingForStartFlag  = 0,

		ECsyWaitingForFrameStart = 1,

		ECsyWaitingForFrameData  = 2,

		ECsyWaitingForEndOfFrame = 3

		};

	static CCommFrameReaderAo* NewL(CPortFactory* aParent, CMux0710Protocol* aMux0710Protocol);

	~CCommFrameReaderAo();

	void Read();

	void ReadCancel();

public:// from CActive

	virtual void DoCancel();

	virtual void RunL();

private:

	CCommFrameReaderAo(CPortFactory* aParent, CMux0710Protocol* aMux0710Protocol);

	void ConstructL();

	void NonMuxed();

	void BasicOption();

	void AdvancedOption();

	TBool CheckFCS(TDes8& aBuffer, TInt aLen, TUint8 aSuppliedChecksum);

	void AddToReceivedFramesList(CCsyMsgBufBpFrame* aBpFrame);

private:

	TCsyFrameReaderState	iFrameReaderState;

	CCsyMsgBufBpFrame*		iFrameBuf;

	TBool iESCRecved;

	};

#endif  //_CCOMMFRAMEREADERAO_H_