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