bthci/hci2implementations/hctls/ti/inc/hctltireceiver.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 15 Jan 2010 08:13:17 +0200
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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 @file
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 @internalComponent
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*/
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#ifndef HCTLTIRECEIVER_H
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#define HCTLTIRECEIVER_H
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#include <e32base.h>
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#include <bluetooth/hci/hcievents.h>
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#include <bluetooth/hciframelogger.h>
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class CHCTLTi;
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class RBusDevComm;
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/**
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	This is the class that implements the UART specifics of the Receiver AO and framer.
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	This class is not intented for derivation.
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*/
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NONSHARABLE_CLASS(CHCTLTiReceiver) : public CActive
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    {
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public:
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	static CHCTLTiReceiver* NewL(CHCTLTi& aHCTLTi, RBusDevComm& aPort);
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	~CHCTLTiReceiver();
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	// Called to initiate the initial read on the port.
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	void Start();
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private:
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	CHCTLTiReceiver(CHCTLTi& aHCTLTi, RBusDevComm& aPort);
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	void ConstructL();
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	// Helper methods
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	void QueueReadForNextFrame(TUint16 aOffset, TUint16 aBytesRequired);
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	void ProcessData();
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	// From CActive
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	virtual void RunL();
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	virtual void DoCancel();
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private:
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    enum THctlReceiverState 
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    	{ 
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      	EWaitingForHctlHeaderByte,
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	  	EWaitingForHciHeader,
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	  	EWaitingForHciPayload,
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	  	EInvalidDataReceived,
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	  	};
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	// Set the receive buffer equal to the 3-DH5 packet size.
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	// This value should be changed by licensees if the controller
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	// is exceeding this packet size.
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	// 3-DH5.  Payload = 1021 octets.
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	// Buffer length = payload + HCTL overhead + ACL Header
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	static const TUint16 KHCTLRecvBufSize = 1026;
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	CHCTLTi& iHCTLTi;
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	THctlReceiverState iState;
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	TUint8 iCurrentHCIPacketType;
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	RBuf8 iReceiveBuffer;
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	TPtr8 iReceiveBufPtr;
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	RBusDevComm& iPort;
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	DECLARE_HCI_LOGGER
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	};
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#endif // HCTLTIRECEIVER_H
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