author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:35:00 +0100 | |
branch | RCL_3 |
changeset 43 | 012cc2ee6408 |
parent 42 | f92a4f87e424 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997-2009 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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* Adheres to the UsbMan USB Class Controller API and talks to C32 or ACM server |
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* to manage the ECACM.CSY that is used to provide a virtual serial port service |
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* to clients. |
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* |
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*/ |
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/** |
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@file |
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*/ |
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#include "CUsbACMClassController.h" |
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#include <usb_std.h> |
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#include <acminterface.h> |
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#include <usb/acmserver.h> |
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#include "UsbmanInternalConstants.h" |
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#include <usb/usblogger.h> |
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#include "acmserverconsts.h" |
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#ifdef __FLOG_ACTIVE |
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_LIT8(KLogComponent, "ACMCC"); |
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// Panic category |
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_LIT( KAcmCcPanicCategory, "UsbAcmCc" ); |
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#endif |
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/** |
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* Panic codes for the USB ACM Class Controller. |
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*/ |
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enum TAcmCcPanic |
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{ |
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/** Start called while in an illegal state */ |
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EBadApiCallStart = 0, |
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/** Asynchronous function called (not needed, as all requests complete synchronously) */ |
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EUnusedFunction = 1, |
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/** Value reserved */ |
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EPanicReserved2 = 2, |
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/** Value reserved */ |
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EPanicReserved3 = 3, |
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/** Stop called while in an illegal state */ |
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EBadApiCallStop = 4, |
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}; |
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/** |
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* Constructs a CUsbACMClassController object |
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* |
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* @param aOwner USB Device that owns and manages the class |
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* |
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* @return A new CUsbACMClassController object |
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*/ |
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CUsbACMClassController* CUsbACMClassController::NewL(MUsbClassControllerNotify& aOwner) |
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{ |
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LOG_STATIC_FUNC_ENTRY |
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CUsbACMClassController* self = new (ELeave) CUsbACMClassController(aOwner); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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/** |
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* Destructor |
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*/ |
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CUsbACMClassController::~CUsbACMClassController() |
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{ |
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Cancel(); |
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#ifdef USE_ACM_REGISTRATION_PORT |
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iComm.Close(); |
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iCommServer.Close(); |
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#else |
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iAcmServer.Close(); |
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#endif // USE_ACM_REGISTRATION_PORT |
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} |
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/** |
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* Constructor. |
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* |
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* @param aOwner USB Device that owns and manages the class |
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*/ |
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CUsbACMClassController::CUsbACMClassController( |
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MUsbClassControllerNotify& aOwner) |
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: CUsbClassControllerPlugIn(aOwner, KAcmStartupPriority), |
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iNumberOfAcmFunctions(KDefaultNumberOfAcmFunctions) |
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{ |
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} |
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/** |
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* 2nd Phase Construction. |
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*/ |
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void CUsbACMClassController::ConstructL() |
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{ |
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iNumberOfAcmFunctions = KUsbAcmNumberOfAcmFunctions; |
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iAcmProtocolNum[0] = KUsbAcmProtocolNumAcm1; |
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iAcmProtocolNum[1] = KUsbAcmProtocolNumAcm2; |
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iAcmProtocolNum[2] = KUsbAcmProtocolNumAcm3; |
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iAcmProtocolNum[3] = KUsbAcmProtocolNumAcm4; |
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iAcmProtocolNum[4] = KUsbAcmProtocolNumAcm5; |
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118 |
|
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// Prepare to use whichever mechanism is enabled to control bringing ACM |
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// functions up and down. |
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#ifdef USE_ACM_REGISTRATION_PORT |
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|
43 | 123 |
LEAVEIFERRORL(iCommServer.Connect()); |
124 |
LEAVEIFERRORL(iCommServer.LoadCommModule(KAcmCsyName)); |
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TName portName(KAcmSerialName); |
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portName.AppendFormat(_L("::%d"), 666); |
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// Open the registration port in shared mode in case other ACM CCs want to |
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// open it. |
43 | 129 |
LEAVEIFERRORL(iComm.Open(iCommServer, portName, ECommShared)); |
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130 |
|
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#else |
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|
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LEAVEIFERRORL(iAcmServer.Connect()); |
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134 |
|
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#endif // USE_ACM_REGISTRATION_PORT |
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} |
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137 |
|
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/** |
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* Called by UsbMan when it wants to start the USB ACM class. This always |
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* completes immediately. |
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* |
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* @param aStatus The caller's request status, filled in with an error code |
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*/ |
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void CUsbACMClassController::Start(TRequestStatus& aStatus) |
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{ |
43 | 146 |
LOG_FUNC; |
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147 |
|
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// We should always be idle when this function is called (guaranteed by |
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// CUsbSession). |
43 | 150 |
__ASSERT_DEBUG( iState == EUsbServiceIdle, _USB_PANIC(KAcmCcPanicCategory, EBadApiCallStart) ); |
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151 |
|
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TRequestStatus* reportStatus = &aStatus; |
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TRAPD(err, DoStartL()); |
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iState = (err == KErrNone) ? EUsbServiceStarted : EUsbServiceIdle; |
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User::RequestComplete(reportStatus, err); |
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} |
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157 |
|
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void CUsbACMClassController::DoStartL() |
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{ |
43 | 160 |
LOG_FUNC |
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161 |
|
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iState = EUsbServiceStarting; |
43 | 163 |
LOGTEXT2(_L8(" iNumberOfAcmFunctions = %d"), iNumberOfAcmFunctions); |
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164 |
|
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#ifdef USE_ACM_REGISTRATION_PORT |
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166 |
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// Create ACM functions. |
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TUint acmSetting; |
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for (TUint i = 0; i < iNumberOfAcmFunctions; i++) |
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{ |
43 | 171 |
LOGTEXT2(_L8(" iAcmProtocolNum[i] = %d"), iAcmProtocolNum[i]); |
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172 |
|
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// indicate the number of ACMs to create, and its protocol number (in the 3rd-lowest byte) |
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acmSetting = 1 | (static_cast<TUint> (iAcmProtocolNum[i]) << 16); |
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TInt err = iComm.SetSignalsToMark(acmSetting); |
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if (err != KErrNone) |
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{ |
43 | 178 |
LOGTEXT2(_L8(" SetSignalsToMark error = %d"), err); |
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if (i != 0) |
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{ |
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// Must clear any ACMs that have completed. |
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// only other than KErrNone if C32 Server fails |
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(void) iComm.SetSignalsToSpace(i); |
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} |
43 | 185 |
LEAVEL(err); |
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} |
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} |
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188 |
|
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#else // use ACM server |
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// Create ACM functions |
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for ( TInt i = 0; i < iNumberOfAcmFunctions; i++ ) |
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{ |
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TInt err; |
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//Use default control interface name and data interface name |
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//For improving performance, control interface name and data interface name configurable |
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//is not supported now. |
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err = iAcmServer.CreateFunctions(1, iAcmProtocolNum[i], KControlIfcName, KDataIfcName); |
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|
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if ( err != KErrNone ) |
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{ |
43 | 201 |
LOGTEXT2(_L8("\tFailed to create ACM function. Error: %d"), err); |
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if (i != 0) |
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{ |
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//Must clear any ACMs that have been completed |
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iAcmServer.DestroyFunctions(i); |
43 | 206 |
LOGTEXT2(_L8("\tDestroyed %d Interfaces"), i); |
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} |
43 | 208 |
LEAVEL(err); |
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} |
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} |
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211 |
|
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#endif // USE_ACM_REGISTRATION_PORT |
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|
43 | 214 |
LOGTEXT2(_L8("\tCreated %d ACM Interfaces"), iNumberOfAcmFunctions); |
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} |
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|
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/** |
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* Called by UsbMan when it wants to stop the USB ACM class. |
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* |
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* @param aStatus The caller's request status: always set to KErrNone |
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*/ |
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void CUsbACMClassController::Stop(TRequestStatus& aStatus) |
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{ |
43 | 224 |
LOG_FUNC; |
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|
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// We should always be started when this function is called (guaranteed by |
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// CUsbSession). |
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__ASSERT_DEBUG( iState == EUsbServiceStarted, _USB_PANIC(KAcmCcPanicCategory, EBadApiCallStop) ); |
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TRequestStatus* reportStatus = &aStatus; |
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DoStop(); |
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User::RequestComplete(reportStatus, KErrNone); |
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} |
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/** |
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* Gets information about the descriptor which this class provides. |
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* |
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* @param aDescriptorInfo Descriptor info structure filled in by this function |
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*/ |
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void CUsbACMClassController::GetDescriptorInfo(TUsbDescriptor& aDescriptorInfo) const |
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{ |
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LOG_FUNC; |
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aDescriptorInfo.iLength = KAcmDescriptorLength; |
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aDescriptorInfo.iNumInterfaces = KAcmNumberOfInterfacesPerAcmFunction*(iNumberOfAcmFunctions); |
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} |
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|
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/** |
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Destroys ACM functions we've already brought up. |
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*/ |
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void CUsbACMClassController::DoStop() |
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{ |
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LOG_FUNC; |
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if (iState == EUsbServiceStarted) |
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{ |
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#ifdef USE_ACM_REGISTRATION_PORT |
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TInt err = iComm.SetSignalsToSpace(iNumberOfAcmFunctions); |
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__ASSERT_DEBUG(err == KErrNone, User::Invariant()); |
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//the implementation in CRegistrationPort always return KErrNone |
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(void)err; |
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// If there is an error here, USBSVR will just ignore it, but |
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// it indicates that our interfaces are still up. We know the CSY |
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// doesn't raise an error, but an IPC error may have occurred. This is |
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// a problem with USBSVR in general- Stops are more or less assumed to |
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// work. |
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#else |
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// Destroy interfaces. Can't do anything with an error here. |
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static_cast<void>(iAcmServer.DestroyFunctions(iNumberOfAcmFunctions)); |
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#endif // USE_ACM_REGISTRATION_PORT |
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LOGTEXT2(_L8("\tDestroyed %d Interfaces"), iNumberOfAcmFunctions); |
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iState = EUsbServiceIdle; |
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} |
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} |
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|
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/** |
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* Standard active object RunL. Never called because this class has no |
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* asynchronous requests. |
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*/ |
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void CUsbACMClassController::RunL() |
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{ |
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__ASSERT_DEBUG( EFalse, _USB_PANIC(KAcmCcPanicCategory, EUnusedFunction) ); |
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} |
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|
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/** |
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* Standard active object cancellation function. Never called because this |
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* class has no asynchronous requests. |
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*/ |
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void CUsbACMClassController::DoCancel() |
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{ |
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__ASSERT_DEBUG( EFalse, _USB_PANIC(KAcmCcPanicCategory, EUnusedFunction) ); |
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} |
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|
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/** |
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* Standard active object error function. Never called because this class has |
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* no asynchronous requests, and hence its RunL is never called. |
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* |
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* @param aError The error code (unused) |
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* @return Always KErrNone to avoid an active scheduler panic |
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*/ |
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TInt CUsbACMClassController::RunError(TInt /*aError*/) |
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{ |
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__ASSERT_DEBUG( EFalse, _USB_PANIC(KAcmCcPanicCategory, EUnusedFunction) ); |
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return KErrNone; |
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} |