1 /*

     2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Talks directly to the USB Logical Device Driver (LDD) and 

    16 * watches any state changes

    17 *

    18 */

    19 

    20 /**

    21  @file

    22 */

    23 

    24 #include "otgstatewatcher.h"

    25 

    26 COtgStateWatcher* COtgStateWatcher::NewL(MOtgPropertiesObserver* aObserver)

    27 	{

    28 	COtgStateWatcher* self = new(ELeave) COtgStateWatcher(aObserver);

    29 	CleanupStack::PushL(self);

    30 	self->ConstructL();

    31 	CleanupStack::Pop(self);

    32 	return self;

    33 	}

    34 

    35 COtgStateWatcher::~COtgStateWatcher()

    36 	{

    37 	Cancel();

    38 	iOtgStateProp.Close();

    39 	}

    40 

    41 COtgStateWatcher::COtgStateWatcher(MOtgPropertiesObserver* aObserver)

    42 	: CActive(EPriorityStandard)

    43 	, iObserver(aObserver)

    44 	, iOtgState(EUsbOtgStateReset)

    45 	{

    46 	CActiveScheduler::Add(this);

    47 	}

    48 

    49 void COtgStateWatcher::ConstructL()

    50 	{

    51 	User::LeaveIfError(iOtgStateProp.Attach(KUidUsbManCategory, KUsbOtgStateProperty));

    52 	iOtgStateProp.Subscribe(iStatus);

    53 	SetActive();

    54 

    55 	TInt err = iOtgStateProp.Get((TInt&)iOtgState);

    56 	if (KErrNone != err)

    57 		{

    58 		iOtgState = EUsbOtgStateBPeripheral;

    59 		}

    60 	}

    61 

    62 void COtgStateWatcher::DoCancel()

    63 	{

    64 	iOtgStateProp.Cancel();

    65 	}

    66 

    67 void COtgStateWatcher::RunL()

    68 	{

    69 	iOtgStateProp.Subscribe(iStatus);

    70 	SetActive();

    71 

    72 	TInt err = iOtgStateProp.Get((TInt&)iOtgState);

    73 	if (KErrNone != err)

    74 		{

    75 		iOtgState = EUsbOtgStateBPeripheral;

    76 		}

    77 	iObserver->MpsoOtgStateChangedL(iOtgState);

    78 	}

    79 

    80 TUsbOtgState COtgStateWatcher::OtgState() const

    81 	{

    82 	return iOtgState;

    83 	}