ec555.cpp

/***************************************************************************
 *   Copyright (C) 2003 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.                                   *
 ***************************************************************************/

#include "ec555.h"

#include "ecnode.h"
#include "libraryitem.h"
#include "pin.h"
#include "resistance.h"

#include <kiconloader.h>
#include <klocale.h>
#include <qpainter.h>

Item* EC555::construct( ItemDocument *itemDocument, bool newItem, const char *id )
{
        return new EC555( (ICNDocument*)itemDocument, newItem, id );
}

LibraryItem* EC555::libraryItem()
{
        return new LibraryItem(
                QString::QString("ec/555"),
                i18n("555"),
                i18n("Integrated Circuits"),
                "ic1.png",
                LibraryItem::lit_component,
                EC555::construct
                        );
}

EC555::EC555( ICNDocument *icnDocument, bool newItem, const char *id )
        : Component( icnDocument, newItem, (id) ? id : "555" )
{
        m_name = i18n("555");
        m_desc = i18n("Common timer IC");
//      m_pins = QStringList::split( ',', "Gnd,Trg,Out,Res,CV,Th,Dis,Vcc" );
//      m_pins = QStringList::split( ',', "Dis,Th,Trg,Gnd,CV,Out,Res,Vcc" );
        
        old_com1 = false;
        old_com2 = false;
        old_q = false;
        
        setSize( -32, -32, 64, 64 );
        
        
        // Pins down left
        
        // Pin 7
        discharge = createPin( -40, -16, 0, "Dis" )->pin();
        addDisplayText( "dis", QRect( -32, -24, 24, 16 ), "Dis" );
        
        // Pin 6
        threshold = createPin( -40, 0, 0, "Th" )->pin();
        addDisplayText( "th", QRect( -32, -8, 24, 16 ), "Th" );
        
        // Pin 2
        trigger = createPin( -40, 16, 0, "Trg" )->pin();
        addDisplayText( "trg", QRect( -32, 8, 24, 16 ), "Trg" );
        
        
        
        // Top two
        
        // Pin 8
        vcc = createPin( -16, -40, 90, "Vcc" )->pin();
        addDisplayText( "vcc", QRect( -24, -32, 16, 8 ), "+" );
        
        // Pin 4
        reset = createPin( 16, -40, 90, "Res" )->pin();
        addDisplayText( "res", QRect( 8, -28, 16, 16 ), "Res" );
        
        
        
        // Bottom two
        
        // Pin 1
        ground = createPin( -16, 40, 270, "Gnd" )->pin();
        addDisplayText( "gnd", QRect( -24, 20, 16, 8 ), "-" );
        
        // Pin 5
        control = createPin( 16, 40, 270, "CV" )->pin();
        addDisplayText( "cv", QRect( 8, 12, 16, 16 ), "CV" );
        
        
        
        // Output on right
        
        // Pin 3
        output = createPin( 40, 0, 180, "Out" )->pin();
        addDisplayText( "out", QRect( 8, -8, 16, 16 ), "Out" );
        
        
        
        m_r1 = createResistance( vcc, control, 5e3 );
        m_r23 = createResistance( control, ground, 1e4 );
        m_po_sink = createResistance( output, ground, 0. );
        m_po_source = createResistance( output, vcc, 0. );
        m_po_source->setConductance(0.);
        m_r_discharge = createResistance( discharge, ground, 0. );
}

EC555::~EC555()
{
}

void EC555::stepNonLogic()
{
        double v_threshold = threshold->voltage();
        double v_control = control->voltage();
        double v_ground = ground->voltage();
        double v_trigger = trigger->voltage();
        double v_reset = reset->voltage();
        double v_vcc = vcc->voltage();
        
        double v_r = (v_control+v_ground)/2;
        
        bool com1 = ( v_threshold == v_control ) ? old_com1 : ( v_threshold < v_control );
        bool com2 = ( v_r == v_trigger ) ? old_com2 : ( v_r > v_trigger );
        bool reset = ( v_reset >= (v_control-v_ground)/2 + v_ground );
        old_com1 = com1;
        old_com2 = com2;
        
        bool r = ( !reset || !com1 );
        bool s = com2;
        
        bool q = old_q;
        if ( v_vcc - v_ground >= 2.5 )
        {
                if ( s && !r )
                {
                        q = true;
                }
                else if ( r && !s )
                {
                        q = false;
                }
        }
        else
        {
                q = false;
        }
        old_q = q;
        
        
        m_r_discharge->setConductance(0.);
        
        if (q)
        {
                m_po_source->setResistance(10.);
                m_po_sink->setConductance(0.);
        }
        else
        {
                m_po_source->setConductance(0.);
                m_po_sink->setResistance(10.);
                if ( v_ground+0.7 <= v_vcc )
                {
                        m_r_discharge->setResistance(10.);
                }
        }
}

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