// Copyright (c) 1997-2009 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:

// This queries the ME (Mobile Equipment) signal quality, using a standard (ETSI GSM 07.07 April 1997) AT command : AT+CSQ

// 

//

/**

 @file

 @internalAll 

*/

#ifndef __MMSIGNAL_H__

#define __MMSIGNAL_H__

#include "ATBASE.H"

class CATGetSignal : public CATCommands

{

public:

	static CATGetSignal* NewL(CATIO* aIo, CTelObject* aTelObject, CATInit* aInit, CPhoneGlobals* aPhoneGlobals);

	CATGetSignal(CATIO* aIo, CTelObject* aTelObject, CATInit* aInit, CPhoneGlobals* aPhoneGlobals);

	~CATGetSignal();

	void ConstructL();

	virtual void Start(TTsyReqHandle aTsyReqHandle, TAny* aParams);

	virtual void Stop(TTsyReqHandle aTsyReqHandle);

	virtual void EventSignal(TEventSource aSource);

	virtual void CompleteWithIOError(TEventSource aSource, TInt aStatus);

	TInt8 NumberOfSignalBars(TInt32 aSignalStrength);

	struct TTsySignalInfo

		{

		TInt32* iSignalStrength;

		TInt8* iBar;

		};

private:

	void Complete(TInt aError, TEventSource aSource);

	void ParseSignalResponseL();

	enum {

		EATNotInProgress,

		EATSignalWaitForWriteComplete,

		EATSignalReadComplete

		} iState;

	// Values of <rssi> parameter in AT+CSQ response

	enum {

		KSignalStrengthMinus113dBm = 0,

		KSignalStrengthMinus101dBm = 6,

		KSignalStrengthMinus89dBm = 12,

		KSignalStrengthMinus77dBm = 18,

		KSignalStrengthMinus53dBm = 30,

		KSignalStrengthMinus51dBm = 31

		};

	TTsySignalInfo iSignalInfo;

};

#endif