1 // Copyright (c) 2007-2009 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 //

    15 

    16 /**

    17  @file

    18  @publishedPartner

    19  @released

    20 */

    21 

    22 #ifndef HCTLUARTPOWERMANAGER_H

    23 #define HCTLUARTPOWERMANAGER_H

    24 

    25 #include <e32base.h>

    26 #include <bluetooth/hci/hcitypes.h>

    27 #include <bluetooth/hci/hctluartpowerobserver.h>

    28 

    29 class CDelay;

    30 class RBusDevComm;

    31 

    32 // The timeout to detect if a device has changed to power off state

    33 static const TInt KUartSignalChangeTimeout = 10000000; // 10s

    34 

    35 _LIT(KHctlUartPowerManagerPanic, "Uart Power Man");

    36 enum THctlUartPowerManagerPanic

    37 	{

    38 	EHCTLUartPowerOnWithCTSLow = 0,

    39 	EHCTLUartPowerInvalidState,

    40 	};

    41 

    42 /**

    43 This class implements monitoring of a UART device to detect when

    44 it changes power state. It is intended to be used by any UART based

    45 HCTL implementation that wishes to detect power changing from on to

    46 off and vice versa.

    47 */

    48 NONSHARABLE_CLASS(CHCTLUartPowerManager) : public CActive

    49     {

    50 public:

    51 	IMPORT_C static CHCTLUartPowerManager *NewL(MHCTLUartPowerObserver& aObserver, RBusDevComm& aPort);

    52 	~CHCTLUartPowerManager();

    53 

    54 	IMPORT_C void Start();

    55 

    56 	static TInt PowerOffTimeout(TAny* aThis);

    57 	

    58 private:

    59     CHCTLUartPowerManager(MHCTLUartPowerObserver& aObserver, RBusDevComm& aPort);

    60 	void ConstructL();

    61 

    62 	virtual void DoCancel();

    63 	virtual void RunL();

    64 

    65 	void PowerChange();

    66 

    67 private:

    68 	MHCTLUartPowerObserver& iObserver;

    69 

    70 	TBTPowerState iState;

    71 	RBusDevComm& iPort;

    72 	TUint iSignals;

    73 

    74 	CDelay* iPowerOffTimer;

    75     };

    76    

    77 #endif // HCTLUARTPOWERMANAGER_H

    78