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/***************************************************************************
* Copyright (C) 2003-2005 by David Saxton *
* david@bluehaze.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef EC4BITCOUNTER_H
#define EC4BITCOUNTER_H
#include "component.h"
#include "logic.h"
/**
Simple logic counter. 4 Inputs, 4 Outputs.
Outputs (A-D) represent the stored value (0-15).
The inputs are:
@li en - Enable incrementing of value
@li in - Input (trigger high)
@li r - Reset stored value to 0
@li ud - Up/Down increment
@short 4 Bit Binary Counter
@author David Saxton
*/
class BinaryCounter : public CallbackClass, public Component
{
public:
BinaryCounter( ICNDocument *icnDocument, bool newItem, const char *id = 0L );
~BinaryCounter();
virtual bool canFlip() const { return true; }
static Item* construct( ItemDocument *itemDocument, bool newItem, const char *id );
static LibraryItem *libraryItem();
protected:
void inStateChanged( bool state ); // Input
void rStateChanged( bool state ); // Reset
void enStateChanged( bool state ); // Enable
void udStateChanged( bool state ); // Up/Down
void outputValue();
void dataChanged();
void initPins( unsigned numBits );
LogicIn *enLogic, *inLogic, *rLogic, *udLogic;
LogicOut * m_pLogicOut[26];
unsigned m_numBits;
bool b_triggerHigh;
bool b_en; // Enable
bool b_ud; // Up/Down
bool b_oldIn;
bool b_reset;
long m_value;
long m_maxValue;
bool m_bDoneLogicIn;
};
#endif
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