usbengines/usbdevcon/src/cusbdevcon.cpp
changeset 0 1e05558e2206
child 7 ff9df6630274
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbdevcon/src/cusbdevcon.cpp	Thu Dec 17 09:14:30 2009 +0200
@@ -0,0 +1,419 @@
+/*
+* 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:  Takes control of device&vendor-specific control messages over EP0
+*
+*/
+
+
+#include <usbman.h>
+
+#include "cusbdevcon.h"
+#include "cusbstatewatcher.h"
+#include "crequestshandler.h"
+#include "cstatemachine.h"
+#include "debug.h"
+
+// LITERALS
+_LIT( KUsbDevConName, "UsbDevCon" );
+
+// ---------------------------------------------------------------------------
+// Two-phase construction
+// ---------------------------------------------------------------------------
+//
+CUsbDevCon* CUsbDevCon::NewLC()
+    {
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::NewLC" ) );
+    
+    CUsbDevCon* self = new (ELeave) CUsbDevCon();
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Two-phase construction
+// ---------------------------------------------------------------------------
+//  
+CUsbDevCon* CUsbDevCon::NewL()
+    {
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::NewL" ) );
+    
+    CUsbDevCon* self = CUsbDevCon::NewLC();
+    CleanupStack::Pop(self);
+    return self;    
+    }
+
+// ---------------------------------------------------------------------------
+// Two-phase construction
+// ---------------------------------------------------------------------------
+//  
+void CUsbDevCon::ConstructL()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL" ) );
+    
+    // usbc
+    User::LeaveIfError(iLdd.Open(0));
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RDevUsbcClient opened OK" ) );
+    
+    // usb manager
+    User::LeaveIfError(iUsbManager.Connect());
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RUsb connected OK" ) );
+    
+    // usb watcher
+    User::LeaveIfError(iUsbWatcher.Connect());
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RUsbWatcher connected OK" ) );
+    
+    // device state watcher
+    iUsbStateWatcher = CUsbStateWatcher::NewL(*this, iLdd);
+        
+    // Requests handler
+    iRequestsHandler = CRequestsHandler::NewL(iLdd, iUsbWatcher, iUsbManager);
+    
+    // state machine
+    iStateMachine = CStateMachine::NewL(*iRequestsHandler, iLdd);
+    
+     User::LeaveIfError(iShutdownTimer.CreateLocal());
+    
+    // get usb state, and act accordingly to it
+    TUsbcDeviceState usbcstate(EUsbcDeviceStateUndefined);
+    iLdd.DeviceStatus(usbcstate);
+    
+    FTRACE(FPrint(
+            _L("[USBDEVCON]\tCUsbDevCon::ConstructL: Usbc state = %d" ),usbcstate));
+    
+    ActAccordinglyToUsbStateL(usbcstate);
+     
+    }
+
+// ---------------------------------------------------------------------------
+// Default construction
+// ---------------------------------------------------------------------------
+//  
+CUsbDevCon::CUsbDevCon() : CActive(EPriorityStandard),
+                             iUsbStateWatcher(0),
+                             iStateMachine (0),
+                             iRequestsHandler(0),
+                             iPrevUsbState(EUsbcDeviceStateUndefined)
+    {
+    CActiveScheduler::Add(this);
+     }
+
+// ---------------------------------------------------------------------------
+// Destruction
+// ---------------------------------------------------------------------------
+//
+CUsbDevCon::~CUsbDevCon()
+    {
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon" ) );
+        
+        Cancel();
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon Cancel" ) );
+        
+        delete iStateMachine;
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon StateMachine" ) );
+        
+        delete iRequestsHandler;
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon RequestsHandler" ) );
+        
+        delete iUsbStateWatcher;
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbStateWatcher" ) );
+        
+        iUsbWatcher.Close();
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbWatcher" ) );
+        
+        iUsbManager.Close();
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbManager" ) );
+        
+        iLdd.Close();
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon LDD" ) );
+        
+        iShutdownTimer.Close();
+        
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon Timer" ) );
+    
+    }   
+
+// ---------------------------------------------------------------------------
+// Acts accordingly to USB state
+// ---------------------------------------------------------------------------
+//
+void CUsbDevCon::ActAccordinglyToUsbStateL(TUsbcDeviceState aUsbcState)
+    {
+    
+    switch (aUsbcState)
+        {
+        case EUsbcDeviceStateUndefined:
+            {
+            
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Undefined" ) );
+                    
+            StopL();
+            break;
+            }
+                
+        case EUsbcDeviceStateAttached:
+            {
+            
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Attached" ) );     
+
+            StartL();
+            break;
+            }
+                
+        case EUsbcDeviceStatePowered:
+            {
+            
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Powered" ) );      
+
+            StartL();
+            break;
+            }
+                
+        case EUsbcDeviceStateDefault:
+            {
+                
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Default" ) );      
+
+            StartL();
+            break;
+            }
+                
+        case EUsbcDeviceStateAddress:
+            {
+                
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Addressed" ) );        
+
+            StartL();
+            break;
+            }
+                
+        case EUsbcDeviceStateConfigured:
+            {
+                
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Configured" ) );       
+
+            if(iPrevUsbState == EUsbcDeviceStateSuspended)
+                {
+                ResumeL();
+                }
+                else
+                {
+                StartL();
+                }
+                
+            break;
+            }
+        case EUsbcDeviceStateSuspended:
+            {
+                
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Suspended" ) );        
+
+            break;
+            }
+                
+        default:
+            {
+                
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: ***Undefined***" ) );      
+
+            StopL();
+            break;
+            }
+        }
+            
+    iPrevUsbState = aUsbcState;
+            
+    // listen to USB states change
+    iUsbStateWatcher->Activate();
+    
+    }
+    
+ // ---------------------------------------------------------------------------
+// Timer is completed
+// ---------------------------------------------------------------------------
+//   
+void CUsbDevCon::RunL()
+    {
+    FTRACE(FPrint(
+            _L("[USBDEVCON]\tCUsbDevCon::RunL: iStatus = %d" ),iStatus.Int()));
+   
+    if(KErrNone == iStatus.Int())
+        {
+        FLOG( _L( "[USBDEVCON]\tCUsbDevCon::RunL Exiting usbdevcon" ) );      
+        
+        // Shutdown timer is finished, exit program
+        CUsbDevCon:: ~CUsbDevCon(); // destruct resources
+        User::Exit(KErrNone);
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Cancellation
+// ---------------------------------------------------------------------------
+//   
+void CUsbDevCon::DoCancel()
+    {
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::DoCancel" ) )
+    iShutdownTimer.Cancel();      
+    }
+    
+// ----------------------------------------------------------------------------
+// Standard active object error function.
+// ----------------------------------------------------------------------------
+//
+TInt CUsbDevCon::RunError( TInt /*aError*/ )
+    {
+    return KErrNone;
+    }
+    
+// ---------------------------------------------------------------------------
+// Starts UsbDevCon services
+// ---------------------------------------------------------------------------
+//
+void CUsbDevCon::StartL()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StartL" ) );        
+
+    if(!iStateMachine->IsStarted())
+        {
+        // set device control
+        User::LeaveIfError(iLdd.SetDeviceControl());
+        
+        // start state machine
+        iStateMachine->Start();
+        
+        }
+        
+        // Cancel shutdown timer, if it is started
+        iShutdownTimer.Cancel();
+     }
+    
+// ---------------------------------------------------------------------------
+// Stops UsbDevCon services
+// ---------------------------------------------------------------------------
+//
+void CUsbDevCon::StopL()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL" ) );
+    
+    if(iStateMachine->IsStarted())
+        {
+        
+        // stop state machine
+        iStateMachine->Stop();
+        
+        // release device control
+        User::LeaveIfError(iLdd.ReleaseDeviceControl());
+        
+         }
+         
+         if(!IsActive()) // not waiting for timer
+            {
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL Starting timer" ) );
+            // run timer
+            iShutdownTimer.Cancel();
+
+            // RunL will be called after KInactiveTimeForShutDown milliseconds
+            iShutdownTimer.After(iStatus, TTimeIntervalMicroSeconds32(KInactiveTimeForShutDown)); 
+            SetActive();
+            FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL Timer is started" ) );
+            }
+    }
+    
+// ---------------------------------------------------------------------------
+// Resumes UsbDevCon services 
+// ---------------------------------------------------------------------------
+//
+void CUsbDevCon::ResumeL()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ResumeL" ) );
+    
+    // Resume state machine
+    StartL();
+    
+    }
+
+// ----------------------------------------------------------------------------
+// Constructs and installs the active scheduler, constructs UsbDevCon object.
+// ----------------------------------------------------------------------------
+//
+static void StartUsbDevConL()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tStartUsbDevConL" ) );
+        
+    // Construct and install the active scheduler
+    CActiveScheduler *myScheduler = new ( ELeave ) CActiveScheduler();
+
+    // Push onto the cleanup stack
+    CleanupStack::PushL( myScheduler );
+
+    // Install as the active scheduler
+    CActiveScheduler::Install( myScheduler );
+    
+    CUsbDevCon* instance =  CUsbDevCon::NewLC();
+    
+    RProcess::Rendezvous(KErrNone); // signal to starter process, that usbdevcon started OK or failed to start
+           
+    FLOG( _L( "[USBDEVCON]\tStartUsbDevConL Usbdevcon is started successfully" ) );
+    
+    // returns only when UsbDevCon closing
+    CActiveScheduler::Start();
+
+    CleanupStack::PopAndDestroy( instance );
+    CleanupStack::PopAndDestroy( myScheduler );
+    }
+
+// ---------------------------------------------------------------------------
+// Main function of the application executable.
+// ---------------------------------------------------------------------------
+//
+GLDEF_C TInt E32Main()
+    {
+    TInt err;
+    
+    // rename the thread so it is easy to find the panic application
+    err = User::RenameThread(KUsbDevConName);
+    
+    if(KErrNone != err)
+        {
+        return err;
+        }
+    
+    __UHEAP_MARK;
+    
+    // create clean-up stack
+    CTrapCleanup* cleanup = CTrapCleanup::New();
+    
+    TRAP( err, StartUsbDevConL() );
+    
+    delete cleanup; // destroy clean-up stack
+    __UHEAP_MARKEND;
+
+    return err;
+    }
+
+
+