author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 17:01:47 +0300 | |
branch | RCL_3 |
changeset 42 | f92a4f87e424 |
permissions | -rw-r--r-- |
42
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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/** |
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@file |
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@publishedPartner |
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*/ |
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#ifndef USBNCM_H |
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#define USBNCM_H |
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//INCLUDES |
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#include <e32std.h> |
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/** Defines the exported P&S key and data structure of the value. */ |
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namespace UsbNcm |
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{ |
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/** The property's category UID. |
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* This property is to notify the NCM connection state. |
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*/ |
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static const TUid KCatNcmSvrUid = {0x101F7989}; |
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|
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/** The property's sub-key.*/ |
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static const TUint KKeyNcmConnectionEvent = 0x2002C33F; |
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/** NCM connection state.*/ |
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enum TNcmConnectionState |
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{ |
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ENcmStateDisconnected = 0, |
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ENcmStateConnected, |
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ENcmStateMax |
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}; |
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|
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/** |
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* Defines the NCM connection event, which contains the IapId, NCM connection state and corresponding error code. |
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* The NCM connection is a special one which can not only be used by RConnection, but also needed to monitor the P&S to fetch its state changing. |
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* Once the P&S published the ENcmStateConnected, the iIapId is also available for starting this connection. |
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* Otherwise, if the P&S published the ENcmStateDisconnected, the iErrCode should be checked to notify the failure reason: |
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* KErrNone, normally disconnected probably because of USB cable unpluged. |
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* KErrInUse, means the other component(currently, BtPan or RNDIS) hold the other P&S key so that the DHCP Provision can't be done by NCM. |
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* system-wide error code, please check Developer Library. |
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* It is also possible that this P&S key is deleted when fetching its value because of the NCM connection closed by its driver. |
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* |
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* @see below sample code. |
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*/ |
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struct TNcmConnectionEvent |
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{ |
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TUint32 iIapId; |
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TNcmConnectionState iState; |
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TInt iErrCode; |
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TUint8 reserved[20]; |
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}; |
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} // namespace UsbNcm |
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|
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/** |
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Example Usage: |
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@code |
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//header file. |
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#include <usb/usbncm.h> |
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using namespace UsbNcm; |
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CMySampleClass: public CActive |
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{ |
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private: |
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RProperty iProperty; |
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RConnection iConnection; |
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TPckgBuf<TNcmConnectionEvent> iNcmEvent; |
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RSocket iSocket; |
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} |
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@endcode |
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@code |
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#include "mysampleclass.h" |
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void CMySampleClass::ContructL() |
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{ |
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User::LeaveIfError(iProperty.Attach(KCatNcmSvrUid, KKeyNcmConnectionEvent, EOwnerThread)); |
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iProperty.Get(iNcmEvent); |
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if (ENcmStateConnected == iNcmEvent.iState) |
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{ |
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TRequestStatus* pStatus = &iStatus; |
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iStatus = KRequestPending; |
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User::RequestComplete(pStatus, KErrNone); |
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} |
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else |
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{ |
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iProperty.Subscribe(iStatus); |
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SetActive(); |
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} |
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} |
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108 |
|
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void CMySampleClass::RunL() |
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{ |
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if (KErrNone == iStatus.Int()) |
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{ |
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iProperty.Get(iNcmEvent); |
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114 |
|
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switch(iNcmEvent.iState) |
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{ |
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case ENcmStateConnected: |
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StartConnection(); |
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break; |
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|
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case ENcmStateDisconnected: |
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if (KErrInUse == iNcmEvent.u.iErrCode) |
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{ |
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//Show error UI with msg like "BtPan or Rndis is active, pls deactive it then re-try....", etc. |
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} |
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else |
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{ |
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//Show error UI with other msg as you like. |
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//StopConnection(); |
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} |
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break; |
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} |
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} |
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} |
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|
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//Sample code, not all string in this panic show on. |
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LIT(KNotFoundNcm, "NotFoundPanic - The NCM connection was not found!"); |
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138 |
|
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TInt CMySampleClass::StartConnection() |
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{ |
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//the number of connections. |
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TInt cnt = 0; |
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iConnection.EnumerateConnections(cnt); |
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|
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TInt index = 1; |
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for (index = 1; index <= cnt; index++) |
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{ |
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TPckgBuf<TConnectionInfo> info; |
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iConnection.GetConnectionInfo(index, info); |
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if (info().iIapId == iNcmEvent.iIapId) |
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{ |
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iConnection.Attach(info, RConnection::EAttachTypeNormal); |
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break; |
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} |
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} |
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__ASSERT_ALWAYS(index <= cnt, User::Panic(KErrNotFound, KNotFoundNcm)); |
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|
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TInt ret = iSocket.Open(...., iConnection); |
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//..... |
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return ret; |
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} |
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@endcode |
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*/ |
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#endif // USBNCM_H |