author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 15 Jan 2010 08:13:17 +0200 | |
changeset 0 | 29b1cd4cb562 |
permissions | -rw-r--r-- |
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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 HCTLBCSPSEQUENCER_H |
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#define HCTLBCSPSEQUENCER_H |
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#include <e32base.h> |
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class CDelay; |
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class CHCTLBcsp; |
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class RBusDevComm; |
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class CHCTLBcspFrameQueue; |
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class CHCTLBcspSender; |
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class CRxHctlBcspFrame; |
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NONSHARABLE_CLASS(CHCTLBcspSequencer) :public CBase |
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/** |
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CHCTLBcspSequencer |
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Provides the Sequencing layer as described in the BCSP Spec. this permits reliable retransmission |
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of ACL and Command Data and in the final version of BCSP a windowing mechanism allowing multiple |
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frames < 7 to be transmitted without acknowledgment for each individual frame. |
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This class is not intended for derivation. |
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*/ |
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{ |
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public: |
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static CHCTLBcspSequencer* NewL(CHCTLBcsp& aHCTLbcsp, RBusDevComm& aPort,CHCTLBcspFrameQueue& aBcspFrameQueue); |
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~CHCTLBcspSequencer(); |
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void WakeUp(); // Set the state machine to ESending and then in Entry() does the same as SendNextPacket() |
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void SendNextPacket(); // Gets next packet from iBcspFrameQueue and Sends it directly to the UART |
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void HandleRxAck(); // Triggers removal of Acked frames |
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void SendPacket(TDesC8* aFrame, TBool aIsReliable); |
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TInt SendQueuedFrame(); |
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void HandleRx(CRxHctlBcspFrame* aFrame); |
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TUint8 TxAck() const; |
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void ResendState(); |
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void HandleRxAckTimeout(); |
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//BCSP peer reset functions |
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void Reset(); |
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void HandlePeerReset(); |
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private: |
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CHCTLBcspSequencer(CHCTLBcsp& aHCTLbcsp, CHCTLBcspFrameQueue& aBcspFrameQueue); |
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void ConstructL(RBusDevComm& aPort); |
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void UpdateTxAckVal(); |
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void StartRxAckTimer(); |
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void StartTxAckTimer(); |
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void TxAckMsg(); |
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static TInt TxTimeout(TAny* aThis); |
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static TInt RxTimeout(TAny* aThis); |
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private: |
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enum TBcspRelRxState |
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{ |
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EIdle, |
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EReceiving |
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}; |
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TUint8 iRxAck; //Updated by HandleRx() |
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TUint8 iRxSeq; |
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TUint8 iRxSeqExpected; |
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TUint8 iRxSeqLast; |
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TUint8 iPacketAvail; |
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TUint8 iTxAck; |
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TBcspRelRxState iRelRxState; |
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TUint8 iRxTimeoutCount; |
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CDelay* iRxAckTimer; |
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CDelay* iTxAckTimer; |
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CHCTLBcsp& iHctlBcsp; |
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CHCTLBcspFrameQueue& iFrameQueue; |
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CHCTLBcspSender* iSender; |
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}; |
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Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
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103 |
#endif // HCTLBCSPSEQUENCER_H |