// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

// e32\include\drivers\adc.h

// ADC controller header file

// Currently only used in Series 5mx port

// 

//

/**

 @file

 @internalTechnology

*/

#ifndef __M32ADC_H__

#define __M32ADC_H__

#include <platform.h>

const TInt KNumAdcChannelPriorities=4;

// ADC operation is specified by a list of commands

// Each command is specified by a 32 bit word:

// Bit 16=1 -> wait for n ms before proceeding to next command (n=bits 0-15)

// Bit 17=1 -> do preamble

// Bit 18=1 -> do postamble

// Bit 19=1 -> take a reading

// Bit 20=1 -> don't store reading

enum TAdcCommand

	{

	EAdcCmdWait=0x10000,

	EAdcCmdPreamble=0x20000,

	EAdcCmdPostamble=0x40000,

	EAdcCmdReading=0x80000,

	EAdcCmdDiscard=0x100000,

	EAdcCmdDummyReading=0x180000,

	};

class DAdc;

class TAdcChannel : public TPriListLink

	{

public:

	IMPORT_C TAdcChannel(TInt anAdc);

public:

	IMPORT_C void Read(TInt* aReadingBuffer);

public:

	IMPORT_C virtual void Preamble();

	IMPORT_C virtual void Postamble();

	virtual void Complete()=0;

public:

	DAdc* iAdc;

	TInt iChannelId;

	TInt iCommandCount;

	const TInt* iCommandList;

	TInt* iReadings;

	};

NONSHARABLE_CLASS(DAdc) : public DBase

	{

public:

	DAdc();

	~DAdc();

public:

	virtual void StartConversion(TInt aChannelId)=0;

public:

	void Add(TAdcChannel* aChannel);

	void Execute(TAdcChannel* aChannel);

	void NextCommand();

	void Start();

	void ConversionComplete(TInt aValue);

	void TimerExpired();

	TInt DoSetMinPriority(TInt aPriority);

	IMPORT_C static TInt SetMinPriority(TInt anAdc, TInt aPriority);

public:

	TPriList<TAdcChannel,KNumAdcChannelPriorities> iList;

	TAdcChannel* iCurrentChannel;

	TInt iCurrentCommand;

	const TInt* iCommandPtr;

	TInt iCommandCount;

	NTimer iTimer;

	TInt iMinPriority;

	static DAdc** TheAdcs;

	static TInt NumberOfAdcs;

	};

#endif