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:  EP0 Reader 

    15 *

    16 */

    17 

    18 

    19 #include "cep0reader.h"

    20 #include "cstatemachine.h"

    21 #include "cusbdevcon.h"

    22 #include "debug.h"

    23 

    24 // ---------------------------------------------------------------------------

    25 // Two-phase construction

    26 // ---------------------------------------------------------------------------

    27 //

    28 CEP0Reader* CEP0Reader::NewL(CStateMachine& aObserver, RDevUsbcClient& aLdd)

    29     {

    30     

    31     FLOG( _L( "[USBDEVCON]\tCEP0Reader::NewL" ) );

    32     

    33     CEP0Reader* self = new (ELeave) CEP0Reader(aObserver, aLdd);

    34     CleanupStack::PushL(self);

    35     self->ConstructL();

    36     CleanupStack::Pop(self);

    37     return self;    

    38     }

    39 

    40 // ---------------------------------------------------------------------------

    41 // Default construction

    42 // ---------------------------------------------------------------------------

    43 //

    44 CEP0Reader::CEP0Reader(CStateMachine& aObserver, RDevUsbcClient& aLdd) :

    45                                                             CActive(EPriorityMore),

    46                                                             iLdd(aLdd),

    47                                                             iObserver(aObserver)

    48                                                             

    49     {

    50     CActiveScheduler::Add(this);

    51     }

    52         

    53 // ---------------------------------------------------------------------------

    54 // Two-phase construction

    55 // ---------------------------------------------------------------------------

    56 //

    57 void CEP0Reader::ConstructL()

    58     {

    59     

    60     FLOG( _L( "[USBDEVCON]\tCEP0Reader::ConstructL" ) );

    61     

    62     iBuffer.CreateL(0); // later will be reallocated with required size

    63     }

    64     

    65 // ---------------------------------------------------------------------------

    66 // Destruction

    67 // ---------------------------------------------------------------------------

    68 //

    69 CEP0Reader::~CEP0Reader()

    70     {

    71     Cancel();

    72            

    73     iBuffer.Close();

    74     }   

    75     

    76 // ---------------------------------------------------------------------------

    77 // Cancellation of outstanding request

    78 // ---------------------------------------------------------------------------

    79 //

    80 void CEP0Reader::DoCancel()

    81     {

    82     iLdd.ReadCancel(EEndpoint0);

    83     }

    84 

    85 // ----------------------------------------------------------------------------

    86 // Standard active object error function.

    87 // ----------------------------------------------------------------------------

    88 //

    89 TInt CEP0Reader::RunError( TInt /*aError*/ )

    90     {

    91     return KErrNone;

    92     }

    93         

    94 // ---------------------------------------------------------------------------

    95 // Data has been read from EP0

    96 // ---------------------------------------------------------------------------

    97 //

    98 void CEP0Reader::RunL()

    99     {

   100 

   101     FLOG( _L( "[USBDEVCON]\tCEP0Reader::RunL Data received:" ) );

   102     

   103     iObserver.ReadEP0(iBuffer, iStatus);

   104     }

   105 

   106 // ---------------------------------------------------------------------------

   107 // Issue request to read setup packet

   108 // ---------------------------------------------------------------------------

   109 //

   110 void CEP0Reader::ReadSetupPacket()

   111     {

   112     

   113     FLOG( _L( "[USBDEVCON]\tCEP0Reader::ReadSetupPacket" ) );

   114 

   115     if(IsActive())

   116         {

   117         return;

   118         }

   119     

   120     iBuffer.Close();

   121     iBuffer.Create(KSetupPacketLength);

   122     

   123     iLdd.ReadPacket(iStatus, EEndpoint0, iBuffer, KSetupPacketLength);

   124     SetActive();

   125     

   126     }

   127 

   128 // ---------------------------------------------------------------------------

   129 // Issue request to read data

   130 // ---------------------------------------------------------------------------

   131 //  

   132 void CEP0Reader::Read(TUint aDataLength)

   133     {

   134     

   135     FLOG( _L( "[USBDEVCON]\tCEP0Reader::Read" ) );

   136 

   137     if(IsActive())

   138         {

   139         return;

   140         }

   141     

   142     iBuffer.Close();

   143     iBuffer.Create(aDataLength);    

   144         

   145     iLdd.Read(iStatus, EEndpoint0, iBuffer, aDataLength);

   146     SetActive();

   147     

   148     }

   149