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:  Personality switch function.

    15  *

    16 */

    17 

    18 #ifndef C_USBPERSONALITYSWITCH_H

    19 #define C_USBPERSONALITYSWITCH_H

    20 

    21 #include <e32base.h>

    22 #include <d32usbdi.h> 

    23 

    24 const TInt KGetAllPersonalitiesReq = 0x82;

    25 const TInt KSetPersonalityReq = 0x89;

    26 

    27 const TInt KNumOfPersShift = 3;

    28 const TInt KCurrPersShift = 2;

    29 const TInt KFirstPersonalityIdShift = 4;

    30 const TInt KLenghtOfPersonalityData = 2;

    31 

    32 class MUsbPersonalitySwitchObserver

    33     {

    34 public:

    35     enum TState

    36         {

    37         EIdle = 0,

    38         ERequestingAllPersonalities,

    39         ERequestingSetPersonality,

    40         EGetAllPersonalitiesCompleted,

    41         ESetPersonalityCompleted,

    42         ERequestCancelled,

    43         ERequestFailed

    44         };

    45 public:

    46     virtual void UsbPersonalitySwitchStateChangedL(TState aState, TInt aData) = 0;

    47     };

    48 

    49 /* *

    50  * Reads personalities, if possible, switches peripheral to mass storage.

    51  * It is assumed that USB is started already

    52  */

    53 NONSHARABLE_CLASS(CUsbPersonalitySwitch) : public CActive

    54     {

    55     enum TState

    56     {

    57     EIdle = 0,

    58     EGetAllPersonalities,

    59     ESetPersonality /*,

    60     EGetAllPersResult,

    61     EGetSetPersResult*/

    62     };

    63     

    64 public:

    65 

    66     /**

    67      * Two-phased constructor

    68      *

    69      * @param aObserver will get call back

    70      * @param aTimerId timer id

    71      */

    72     static CUsbPersonalitySwitch * NewL(MUsbPersonalitySwitchObserver* aObserver);

    73 

    74     /**

    75      * Destructor.

    76      */

    77     virtual ~CUsbPersonalitySwitch();

    78 

    79     /**

    80      * calls RunL after aMilliseconds

    81      * @param aMilliseconds time in millisecs

    82      */

    83     TInt SwitchPersonalityL(TUint32 aDeviceId, TInt aPersonalityToBeSet);

    84     

    85     void CancelSwitchPersonalityL();

    86 

    87 public:

    88 

    89     // from base class CActive

    90     /**

    91      * Called when request is completed

    92      */

    93     void RunL();

    94 

    95     /**

    96      * called when RunL leaves

    97      * @param aError error code

    98      * @return error code

    99      */

   100     TInt RunError(TInt aError);

   101 

   102     /**

   103      * Called when request is cancelled

   104      */

   105     void DoCancel();

   106 

   107 private:

   108 

   109     /**

   110      * Default constructor

   111      * @param aObserver will get call back

   112      * @param aTimerId timer id 

   113      */

   114     CUsbPersonalitySwitch(MUsbPersonalitySwitchObserver* aObserver);

   115 

   116     /**

   117      * 2nd phase construction

   118      */

   119     void ConstructL();

   120     

   121     void Reset();

   122 

   123 private:

   124     // data

   125 

   126     /**

   127      * Observer

   128      * not own

   129      */

   130     MUsbPersonalitySwitchObserver* iObserver;

   131     

   132     RUsbInterface iUsbInterface;

   133 

   134     /**

   135      * timer id

   136      */

   137     TInt iPersonalityToBeSet;

   138     

   139     RUsbInterface::TUsbTransferRequestDetails iTransfer;

   140     

   141     RBuf8 iSendData;

   142     

   143     RBuf8 iRcvData;

   144     

   145     TState iState;

   146     };

   147 

   148 #endif //  C_USBPERSONALITYSWITCH_H