sl@0: // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\include\drivers\adc.h
sl@0: // ADC controller header file
sl@0: // Currently only used in Series 5mx port
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalTechnology
sl@0: */
sl@0: 
sl@0: #ifndef __M32ADC_H__
sl@0: #define __M32ADC_H__
sl@0: #include <platform.h>
sl@0: 
sl@0: const TInt KNumAdcChannelPriorities=4;
sl@0: 
sl@0: // ADC operation is specified by a list of commands
sl@0: // Each command is specified by a 32 bit word:
sl@0: // Bit 16=1 -> wait for n ms before proceeding to next command (n=bits 0-15)
sl@0: // Bit 17=1 -> do preamble
sl@0: // Bit 18=1 -> do postamble
sl@0: // Bit 19=1 -> take a reading
sl@0: // Bit 20=1 -> don't store reading
sl@0: 
sl@0: enum TAdcCommand
sl@0: 	{
sl@0: 	EAdcCmdWait=0x10000,
sl@0: 	EAdcCmdPreamble=0x20000,
sl@0: 	EAdcCmdPostamble=0x40000,
sl@0: 	EAdcCmdReading=0x80000,
sl@0: 	EAdcCmdDiscard=0x100000,
sl@0: 	EAdcCmdDummyReading=0x180000,
sl@0: 	};
sl@0: 
sl@0: class DAdc;
sl@0: class TAdcChannel : public TPriListLink
sl@0: 	{
sl@0: public:
sl@0: 	IMPORT_C TAdcChannel(TInt anAdc);
sl@0: public:
sl@0: 	IMPORT_C void Read(TInt* aReadingBuffer);
sl@0: public:
sl@0: 	IMPORT_C virtual void Preamble();
sl@0: 	IMPORT_C virtual void Postamble();
sl@0: 	virtual void Complete()=0;
sl@0: public:
sl@0: 	DAdc* iAdc;
sl@0: 	TInt iChannelId;
sl@0: 	TInt iCommandCount;
sl@0: 	const TInt* iCommandList;
sl@0: 	TInt* iReadings;
sl@0: 	};
sl@0: 
sl@0: NONSHARABLE_CLASS(DAdc) : public DBase
sl@0: 	{
sl@0: public:
sl@0: 	DAdc();
sl@0: 	~DAdc();
sl@0: public:
sl@0: 	virtual void StartConversion(TInt aChannelId)=0;
sl@0: public:
sl@0: 	void Add(TAdcChannel* aChannel);
sl@0: 	void Execute(TAdcChannel* aChannel);
sl@0: 	void NextCommand();
sl@0: 	void Start();
sl@0: 	void ConversionComplete(TInt aValue);
sl@0: 	void TimerExpired();
sl@0: 	TInt DoSetMinPriority(TInt aPriority);
sl@0: 	IMPORT_C static TInt SetMinPriority(TInt anAdc, TInt aPriority);
sl@0: public:
sl@0: 	TPriList<TAdcChannel,KNumAdcChannelPriorities> iList;
sl@0: 	TAdcChannel* iCurrentChannel;
sl@0: 	TInt iCurrentCommand;
sl@0: 	const TInt* iCommandPtr;
sl@0: 	TInt iCommandCount;
sl@0: 	NTimer iTimer;
sl@0: 	TInt iMinPriority;
sl@0: 	static DAdc** TheAdcs;
sl@0: 	static TInt NumberOfAdcs;
sl@0: 	};
sl@0: 
sl@0: #endif