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/*
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* Copyright (c) 2006 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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#include <e32cons.h>
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#include <f32file.h>
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#include "TrkConnData.h"
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#include "TrkXtiCommPort.h"
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#include "TrkFramingLayer.h"
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_LIT(KSendErrMsg, "Failed to write to the XTI channel");
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//
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// Default comm values
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//
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//
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// Static helper functions
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//
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//
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//
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// CTrkXtiCommPort implementation
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//
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//
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//
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// CTrkXtiCommPort constructor
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//
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CTrkXtiCommPort::CTrkXtiCommPort()
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: CTrkCommPort(CActive::EPriorityStandard),
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iConnected(EFalse),
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iListening(EFalse),
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iLineNumber(0),
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iLddLoaded(EFalse)
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{
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}
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//
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// CTrkXtiCommPort::ConstructL
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//
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void CTrkXtiCommPort::ConstructL(TTrkConnData aTrkConnData, TDes& aErrorMessage)
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{
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iLDD = aTrkConnData.iLDD;
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// We don't really need this
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//iUnitNumber = aTrkConnData.iPortNumber;
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if (!iLDD.Size())
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{
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aErrorMessage.Format(_L("LDD not specified in init file\r\n"));
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User::Leave(KErrCorrupt);
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}
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}
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//
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// CTrkXtiCommPort destructor
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//
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CTrkXtiCommPort::~CTrkXtiCommPort()
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{
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if (iLddLoaded)
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{
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//cancel the read request
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iXtiDriver.ReadCancel();
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iXtiDriver.Close();
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TInt err = User::FreeLogicalDevice(iLDD);
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if (KErrNone != err)
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User::Panic(_L("FreeLogicalDevice failed"), err);
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iLddLoaded = EFalse;
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}
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}
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//
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// CTrkXtiCommPort::NewL
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//
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CTrkXtiCommPort* CTrkXtiCommPort::NewL(TTrkConnData aTrkConnData, TDes& aErrorMessage)
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{
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CTrkXtiCommPort* self = new(ELeave) CTrkXtiCommPort;
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CleanupStack::PushL(self);
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self->ConstructL(aTrkConnData, aErrorMessage);
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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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// CTrkXtiCommPort::OpenPortL
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//
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// Open the serial type communications port
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//
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void CTrkXtiCommPort::OpenPortL()
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{
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TInt error = KErrNone;
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// make sure the LDD is not already loaded
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User::FreeLogicalDevice(iLDD);
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error = User::LoadLogicalDevice(iLDD);
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if ((KErrAlreadyExists != error) && (KErrNone != error))
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ReportAndLeaveIfErrorL(error, _L("Failed to load xti logical device."));
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error = iXtiDriver.Open();
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if (KErrNone != error)
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ReportAndLeaveIfErrorL(error, _L("Failed to open xti logical device."));
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iLddLoaded = ETrue;
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_LIT(KXTIMSG, "Connection: XTI\r\nLDD: TrkXtiDriver\r\n");
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iConnectionMessage = KXTIMSG;
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}
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//
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// CTrkXtiCommPort::ClosePort
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//
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// Close the communications port
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//
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void CTrkXtiCommPort::ClosePort()
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{
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Cancel();
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if (iLddLoaded)
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{
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//cancel the read request
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iXtiDriver.ReadCancel();
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iXtiDriver.Close();
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TInt err = User::FreeLogicalDevice(iLDD);
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if (KErrNone != err)
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User::Panic(_L("FreeLogicalDevice failed"), err);
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iLddLoaded = EFalse;
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}
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}
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//
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// CTrkXtiCommPort::SendDataL
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//
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// Write data to the serial type port
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//
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void CTrkXtiCommPort::SendDataL(const TDesC8& aBuffer)
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{
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TInt err = iXtiDriver.Write(aBuffer);
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ReportAndLeaveIfErrorL(err, KSendErrMsg);
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}
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//
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// CTrkXtiCommPort::Listen
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//
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// Start listening for data coming into the serial type communications port
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//
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void CTrkXtiCommPort::Listen(CTrkFramingLayer *aFramingLayer)
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{
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iFramingLayer = aFramingLayer;
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CActiveScheduler::Add(this);
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IssueReadRequest();
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iListening = ETrue;
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}
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//
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// CTrkXtiCommPort::StopListening
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//
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// Stop listening for data coming into the serial type communications port
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//
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void CTrkXtiCommPort::StopListening()
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{
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if (iListening)
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{
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Cancel();
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Deque();
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}
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iListening = EFalse;
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}
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//
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// CTrkXtiCommPort::ReportAndLeaveIfErrorL
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//
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// If an error occurred, print the error information to the screen and bail out
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//
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void CTrkXtiCommPort::ReportAndLeaveIfErrorL(TInt aError, const TDesC& aDesc)
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{
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if (KErrNone != aError)
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{
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iErrorMessage.Format(_L("%S\r\nError Code: %d\r\n"), &aDesc, aError);
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User::Leave(aError);
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}
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}
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//
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// CTrkXtiCommPort::IssueReadRequest
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//
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// Wait for data to come into the communications port
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//
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void CTrkXtiCommPort::IssueReadRequest()
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{
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iNextReadChar = 0;
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iXtiDriver.ReadOneOrMore(iStatus, iReceivedChars);
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SetActive();
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}
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//
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// CTrkXtiCommPort::DoCancel
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//
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// Cancel the request for data from the communications port
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//
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void CTrkXtiCommPort::DoCancel()
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{
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iXtiDriver.ReadCancel();
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}
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//
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// CTrkXtiCommPort::RunL
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//
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// Called when data comes into the communications port
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//
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void CTrkXtiCommPort::RunL()
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{
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// pass the data onto the framing layer
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if (iStatus.Int() == KErrNone)
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{
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while (iNextReadChar < iReceivedChars.Length())
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iFramingLayer->HandleByte(iReceivedChars[iNextReadChar++]);
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//iXtiDriver.Write(iReceivedChars);
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}
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// continue waiting for data
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IssueReadRequest();
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}
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