// 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