1 /*

     2 * Copyright (c) 2007 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:  State, while waiting for requests

    15 *

    16 */

    17 

    18 

    19 #ifndef CEP0READER_H

    20 #define CEP0READER_H

    21 

    22 #include "cusbdevcon.h"

    23 

    24 class CStateMachine;    // gets notifications on events happened on EP0

    25 

    26 /**

    27  *  EP0 Reader

    28  *

    29  *  @lib usbdevcon.lib

    30  *  @since S60 v.5.0 

    31  */

    32  

    33 class CEP0Reader : public CActive 

    34     {

    35 

    36 public:

    37 

    38     /**

    39      * Two-phased constructor.

    40      *

    41      * @since S60 v.5.0

    42      * @param aObserver Gets notification when Read request is completed

    43      * @param aLdd Link to services for reading EP0

    44      * @return Constructed instance

    45      */

    46     static CEP0Reader* NewL(CStateMachine& aObserver, RDevUsbcClient& aLdd);

    47     

    48     /**

    49     * Destructor.

    50     *

    51     * @since S60 v.5.0

    52     */

    53     virtual ~CEP0Reader();

    54     

    55     /**

    56      * Set request to read setup packet

    57      *

    58      * @since S60 v.5.0

    59      */

    60     void ReadSetupPacket();

    61     

    62     /**

    63      * Set request to read EP0 data

    64      *

    65      * @since S60 v.5.0

    66      * @param aDataLength Max length of data to read

    67      */

    68     void Read(TUint aDataLength);

    69     

    70 private:

    71     

    72     /**

    73      * Default construction

    74      *

    75      * @since S60 v.5.0

    76      * @param aObserver Gets notification when Read request is completed

    77      * @param aLdd Link to services for reading EP0

    78      */

    79     CEP0Reader(CStateMachine& aObserver, RDevUsbcClient& aLdd);

    80     

    81     /**

    82      * Two-phased construction.

    83      *

    84      */

    85     void ConstructL();

    86     

    87     // from CActive

    88     

    89     /**

    90      * From CActive.

    91      *

    92      */

    93     void RunL();

    94     

    95     /**

    96      * From CActive.

    97      *

    98      */ 

    99     void DoCancel();

   100     

   101     /**

   102      * From CActive.

   103      *

   104      */ 

   105      TInt RunError( TInt /*aError*/ );

   106 

   107 private: // data

   108     

   109     /**

   110      * LDD Logical Device Driver

   111      * Not own.  

   112      */

   113     RDevUsbcClient& iLdd;

   114     

   115     /**

   116      * State machine gets read data

   117      * Not own.  

   118      */

   119     CStateMachine& iObserver;

   120     

   121     /**

   122      * Read buffer

   123      */

   124     RBuf8 iBuffer;

   125         

   126     };

   127 

   128 #endif // CEP0READER_H