kernel/eka/include/drivers/adc.h
author Mike Kinghan <mikek@symbian.org>
Tue, 16 Nov 2010 14:39:21 +0000
branchGCC_SURGE
changeset 303 9b85206a602c
parent 0 a41df078684a
permissions -rw-r--r--
We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass of the rom input files can be informed what toolchain we are building with and conditionally include or exclude files depending on whether the toolchain could build them.

// 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