/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  EP0 Reader 

*

*/

#include "cep0reader.h"

#include "cstatemachine.h"

#include "cusbdevcon.h"

#include "debug.h"

// ---------------------------------------------------------------------------

// Two-phase construction

// ---------------------------------------------------------------------------

//

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

    {

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

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;    

    }

// ---------------------------------------------------------------------------

// Default construction

// ---------------------------------------------------------------------------

//

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

                                                            CActive(EPriorityMore),

                                                            iLdd(aLdd),

                                                            iObserver(aObserver)

    {

    CActiveScheduler::Add(this);

    }

// ---------------------------------------------------------------------------

// Two-phase construction

// ---------------------------------------------------------------------------

//

void CEP0Reader::ConstructL()

    {

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

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

    }

// ---------------------------------------------------------------------------

// Destruction

// ---------------------------------------------------------------------------

//

CEP0Reader::~CEP0Reader()

    {

    Cancel();

    iBuffer.Close();

    }   

// ---------------------------------------------------------------------------

// Cancellation of outstanding request

// ---------------------------------------------------------------------------

//

void CEP0Reader::DoCancel()

    {

    iLdd.ReadCancel(EEndpoint0);

    }

// ----------------------------------------------------------------------------

// Standard active object error function.

// ----------------------------------------------------------------------------

//

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

    {

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// Data has been read from EP0

// ---------------------------------------------------------------------------

//

void CEP0Reader::RunL()

    {

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

    iObserver.ReadEP0(iBuffer, iStatus);

    }

// ---------------------------------------------------------------------------

// Issue request to read setup packet

// ---------------------------------------------------------------------------

//

void CEP0Reader::ReadSetupPacket()

    {

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

    if(IsActive())

        {

        return;

        }

    iBuffer.Close();

    iBuffer.Create(KSetupPacketLength);

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

    SetActive();

    }

// ---------------------------------------------------------------------------

// Issue request to read data

// ---------------------------------------------------------------------------

//  

void CEP0Reader::Read(TUint aDataLength)

    {

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

    if(IsActive())

        {

        return;

        }

    iBuffer.Close();

    iBuffer.Create(aDataLength);    

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

    SetActive();

    }