// Copyright (c) 2006-2009 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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//+
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+
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/**+
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 @file+
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 @internalComponent+
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*/+
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+
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#include "hctluartbase.h"+
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#include "btbusdevcomm.h"+
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+
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#include <bluetooth/logger.h>+
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#include <bluetooth/hci/hciutil.h>+
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+
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#ifdef __FLOG_ACTIVE+
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_LIT8(KLogComponent, LOG_COMPONENT_HCTL_BASE);+
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#endif+
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+
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EXPORT_C CHCTLUartBase::CHCTLUartBase()+
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	{+
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	LOG_FUNC+
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	}+
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+
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EXPORT_C CHCTLUartBase::~CHCTLUartBase()+
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	{+
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	LOG_FUNC+
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	if (iPort)+
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		{+
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		iPort->Close();+
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		delete iPort;+
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		}+
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	}+
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+
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/**+
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	Common method used by UART derivative HCTLs to check hardware is connected+
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*/+
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EXPORT_C TBool CHCTLUartBase::CheckHardwareConnected()+
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	{+
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	LOG_FUNC+
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	TBool hwPresent = ETrue;+
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+
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	LOG1(_L8("\tsignals = 0x%02x"), iPort->Signals());+
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+
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	// If there are currently no signals assume the HW is not connected.+
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	if(!iPort->Signals())+
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		{+
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		hwPresent = EFalse;+
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+
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		TRequestStatus lineStatus;+
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		TRequestStatus timeStatus;+
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+
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		TUint testSignals;+
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		RTimer timer;+
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+
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		TInt err = timer.CreateLocal();+
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		if(err == KErrNone)+
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			{+
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			iPort->NotifySignalChange(lineStatus, testSignals);+
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			timer.After(timeStatus, 5000000); // 5s+
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			+
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			User::WaitForRequest(lineStatus, timeStatus); // so we don't wait forever+
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			+
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			if (timeStatus.Int() == KErrNone)+
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				{+
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				// The guard timer has expired.+
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				iPort->NotifySignalChangeCancel();+
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				User::WaitForRequest(lineStatus);	// consume the request+
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				}+
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			else if ( lineStatus.Int() == KErrNone)+
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				{+
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				// The hardware is there.  Cancel the timer.+
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				timer.Cancel();+
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				User::WaitForRequest(timeStatus);	// consume the request+
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				hwPresent = ETrue;+
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				}+
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			}+
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		timer.Close();+
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		}+
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+
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	LOG1(_L8("\thwPresent = %d"), hwPresent);+
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	return hwPresent;+
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	}+
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+
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/**+
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Common method used by UART derivative HCTLs to open the available physical +
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UART connections for bluetooth hardware+
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*/+
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void CHCTLUartBase::OpenPortL(TUint aPortNo)+
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	{+
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	LOG_FUNC+
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	LOG1(_L8("\taPortNo = %d"), aPortNo);+
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	+
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	TInt ret = iPort->Open(aPortNo);+
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	+
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	if(ret != KErrNone && ret != KErrAlreadyExists)+
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		{+
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		LEAVEIFERRORL(ret);+
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		}+
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	}+
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+
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// For debug emulator environments, we provide a mechanism to cycle through possible+
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// port numbers until we find a port to use (it maybe be connected to something other+
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// than Bluetooth hardware, but that has to be identified at a higher level).  This meant+
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// users don't have to fiddle with esk or ini files, especially for the case where they're+
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// running back to back on one PC. +
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// However, this slows down emulator start-up, so it is configured by ini file which does+
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// mean potentially fiddling with ini files anyway ... c'est la vie.+
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#if(defined(__WINS__) && defined(_DEBUG))+
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#define SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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#pragma message("If configured, Bluetooth HCTL will scan UARTs to find a connected port")+
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#endif+
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+
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#ifndef SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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+
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void CHCTLUartBase::ScanAndOpenPortL(TUint /*aStartingPortNo*/)+
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	{+
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	LOG_FUNC+
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	LEAVEL(KErrNotSupported);+
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	}+
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+
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#else+
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+
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/**+
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	Common method used by UART derivative HCTLs to scan the available physical UART connections+
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	for bluetooth hardware+
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*/+
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void CHCTLUartBase::ScanAndOpenPortL(TUint aStartingPortNo)+
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	{+
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	LOG_FUNC+
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	LOG1(_L8("\aStartingPortNo = %d"), aStartingPortNo);+
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	TUint portNo = aStartingPortNo;+
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	+
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	TInt ret = KErrNone;+
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	+
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	// This is a limit set by windows.  RBusDevComm will panic if aPortNo of 32 or higher+
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	// is used.  +
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	const TInt KMaxPortNumber = 32;+
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	+
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	while(portNo < KMaxPortNumber)+
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		{+
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		LOG2(_L8("\tTRYING: port %d (PC COM Port %d)"), portNo, portNo + 1);+
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		ret = iPort->Open(portNo);+
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		+
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		if(ret == KErrNone || ret == KErrAlreadyExists)+
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			{+
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			if(CheckHardwareConnected())+
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				{+
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				LOG2(_L8("\tUSING: port %d (PC COM Port %d)"), portNo, portNo + 1);+
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				// Exit the loop, a port has been opened.+
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				break;+
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				}+
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			else +
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				{+
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				iPort->Close();	// close it - there was no HW there...+
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				}+
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			}+
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		portNo++;  // try the next port+
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		}+
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	+
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	if(ret != KErrNone && ret != KErrAlreadyExists)+
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		{+
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		// A port could not be found.+
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		LEAVEIFERRORL(KErrHardwareNotAvailable);+
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		}+
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	}+
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	+
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#endif // SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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+
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//Implementation of pure virtuals from CHCTLBase+
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EXPORT_C TAny* CHCTLUartBase::Interface(TUid aUid)+
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	{+
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	TAny* ret = NULL;+
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	switch(aUid.iUid)+
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		{+
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		case KHCTLInterfaceUid:+
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			ret = reinterpret_cast<TAny*>(static_cast<MHCTLInterface*>(this));+
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			break;+
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+
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		default:+
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			break;+
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		};+
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+
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	return ret;+
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	}+
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+
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EXPORT_C void CHCTLUartBase::BaseConstructL(const TDesC& aIniFileName)+
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	{+
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	LOG_FUNC+
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	+
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	_LIT(KSection, "hctl");+
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	_LIT(KVarPort, "port");+
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	_LIT(KVarBaudRate, "baud_rate");+
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	_LIT(KVarPwrCtrlMode, "pwr_ctrl_mode");+
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	#ifdef SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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	_LIT(KVarScanPorts, "scan_ports");+
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	#endif // SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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+
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	// Create HCI Utility library+
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	CHciUtil* hciUtil = CHciUtil::NewL(aIniFileName);+
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	CleanupStack::PushL(hciUtil);+
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	+
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	hciUtil->OpenIniFileL();+
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+
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	TUint portNumber = hciUtil->GetValueFromFileL(KSection, KVarPort);+
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	TUint baudRate = hciUtil->GetValueFromFileL(KSection, KVarBaudRate);+
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	+
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	// we don't want to leave if the param is not present. just consider+
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	// the default value as true +
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	TRAPD(err, iPowerCtrlMode = static_cast<TPowerControlDetectionMode>(hciUtil->GetValueFromFileL(KSection, KVarPwrCtrlMode)));+
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	if (err != KErrNone)+
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		{+
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		iPowerCtrlMode = EPwrCtrlCTSTimedLow;	// keeps back compatibility+
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		}+
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	+
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#ifdef SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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	TBool scanPorts = EFalse;+
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	TRAP(err, scanPorts = static_cast<TBool>(hciUtil->GetValueFromFileL(KSection, KVarScanPorts)));+
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	if(err != KErrNone)+
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		{+
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		scanPorts = EFalse; // default to off because of stack boot time impact+
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		}+
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#endif // SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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	+
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	// Remove the HCI UTIL instance. +
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	CleanupStack::PopAndDestroy();+
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	+
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	// Allocate the RBtBusDevComm port object+
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	iPort = new (ELeave) RBtBusDevComm;+
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	+
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#ifdef SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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	if(scanPorts)+
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		{+
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		ScanAndOpenPortL(portNumber);+
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		}+
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	else+
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#endif // SYMBIAN_INTERNAL_RETRY_BLUETOOTH_PORT_OPEN+
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		{+
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		OpenPortL(portNumber);+
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		}+
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	+
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	SetPortBaudRateL(baudRate);+
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+
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	// Perform any HCTL specific initialisation. +
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	PortOpenedL();+
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	}+
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+
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EXPORT_C void CHCTLUartBase::SetPortBaudRateL(TUint32 aBaudRate)+
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	{	+
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	LOG_FUNC+
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+
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	TCommConfig configPkg;+
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	iPort->Config(configPkg);+
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	TCommConfigV01& config = configPkg(); //Get reference to TCommConfig iConfig+
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+
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	switch(aBaudRate)+
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		{+
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		case 57600:+
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			config.iRate = EBps57600;+
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			break;+
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+
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		case 115200:+
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			config.iRate = EBps115200;+
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			break;+
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+
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		case 230400:+
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			config.iRate = EBps230400;+
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			break;+
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+
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		case 460800:+
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			config.iRate = EBps460800;+
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			break;+
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+
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		case 576000:+
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			config.iRate = EBps576000;+
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			break;+
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+
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		case 750000:+
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			config.iRate = EBpsSpecial;+
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			config.iSpecialRate=0; // 750000;+
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			break;+
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+
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		case 1152000:+
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			config.iRate = EBps1152000;+
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			break;+
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+
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		case 921600:+
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			config.iRate = EBps921600;+
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			break;+
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+
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		case 1843200:+
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			config.iRate = EBpsSpecial;+
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			config.iSpecialRate=1; // 1843200;+
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			break;+
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+
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		case 3686400:+
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		case 3692300:+
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		case 3600000:+
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			config.iRate = EBpsSpecial;+
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			config.iSpecialRate=2; // 3686400;+
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			break;+
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+
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		case 3000000:+
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			config.iRate = EBpsSpecial;+
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			config.iSpecialRate = 3;+
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			break;+
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+
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		default:+
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			// Use default rate in case of error+
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			config.iRate = EBps115200;+
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			break;+
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		};+
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	+
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	// Update the port configuration.+
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	LEAVEIFERRORL(iPort->SetConfig(configPkg));+
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	}+
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+
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// Accessor method for the port+
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EXPORT_C RBusDevComm& CHCTLUartBase::Port()+
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	{+
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	// No check for a NULL iPort is needed because BaseConstructL will Leave if we+
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	// fail to allocate the port object+
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	return *iPort;+
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	}+
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+
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EXPORT_C CHCTLUartBase::TPowerControlDetectionMode CHCTLUartBase::PowerCtrlMode() const+
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	{+
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	return iPowerCtrlMode;+
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	}+
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