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/***************************************************************************
* Copyright (C) 2003-2004 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 "ecbcdto7segment.h"
#include "logic.h"
#include "libraryitem.h"
#include <kiconloader.h>
#include <klocale.h>
// Values for a,b,c,d,e,f,g of common-anode 7 segment display
bool numbers[16][7] =
{ { 1, 1, 1, 1, 1, 1, 0 }, // 0
{ 0, 1, 1, 0, 0, 0, 0 }, // 1
{ 1, 1, 0, 1, 1, 0, 1 }, // 2
{ 1, 1, 1, 1, 0, 0, 1 }, // 3
{ 0, 1, 1, 0 ,0, 1, 1 }, // 4
{ 1, 0, 1, 1, 0, 1, 1 }, // 5
{ 1, 0, 1, 1, 1, 1, 1 }, // 6
{ 1, 1, 1, 0, 0, 0, 0 }, // 7
{ 1, 1, 1, 1, 1, 1, 1 }, // 8
{ 1, 1, 1, 0, 0, 1, 1 }, // 9
{ 1, 1, 1, 0, 1, 1, 1 }, // A
{ 0, 0, 1, 1, 1, 1, 1 }, // b
{ 1, 0, 0, 1, 1, 1, 0 }, // C
{ 0, 1, 1, 1, 1, 0, 1 }, // d
{ 1, 0, 0, 1, 1, 1, 1 }, // E
{ 1, 0, 0, 0, 1, 1, 1 } }; // F
Item* ECBCDTo7Segment::construct( ItemDocument *itemDocument, bool newItem, const char *id )
{
return new ECBCDTo7Segment( (ICNDocument*)itemDocument, newItem, id );
}
LibraryItem* ECBCDTo7Segment::libraryItem()
{
return new LibraryItem(
QString::QString("ec/bcd_to_seven_segment"),
i18n("BCD to 7 Segment"),
i18n("Integrated Circuits"),
"ic2.png",
LibraryItem::lit_component,
ECBCDTo7Segment::construct
);
}
ECBCDTo7Segment::ECBCDTo7Segment( ICNDocument *icnDocument, bool newItem, const char *id )
: Component( icnDocument, newItem, (id) ? id : "bcd_to_seven_segment" )
{
m_name = i18n("BCD to Seven Segment");
m_desc = i18n("Converts a binary-coded-input to a form displayable by a seven segment display.<br><br>"
"Normal operation: <i>lt</i> (Lamp Test) and the <i>rb</i> (Ripple Blanking) are held high, <i>en</i> (Enable) is held low.");
ALogic = BLogic = CLogic = DLogic = 0L;
ltLogic = rbLogic = enLogic = 0L;
for ( int i=0; i<7; i++ )
{
outLogic[i] = 0L;
oldOut[i] = false;
}
QStringList pins = QStringList::split( ',', "A,B,C,D,,lt,rb,en,d,e,f,g,,a,b,c", true );
initDIPSymbol( pins, 48 );
initDIP(pins);
ALogic = createLogicIn( ecNodeWithID("A") );
BLogic = createLogicIn( ecNodeWithID("B") );
CLogic = createLogicIn( ecNodeWithID("C") );
DLogic = createLogicIn( ecNodeWithID("D") );
ltLogic = createLogicIn( ecNodeWithID("lt") );
rbLogic = createLogicIn( ecNodeWithID("rb") );
enLogic = createLogicIn( ecNodeWithID("en") );
ALogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
BLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
CLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
DLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
ltLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
rbLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
enLogic->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
for ( uint i=0; i<7; ++i )
{
outLogic[i] = createLogicOut( ecNodeWithID( QChar('a'+i) ), false );
outLogic[i]->setCallback( this, (CallbackPtr)(&ECBCDTo7Segment::inStateChanged) );
}
inStateChanged(false);
}
ECBCDTo7Segment::~ECBCDTo7Segment()
{
}
void ECBCDTo7Segment::inStateChanged(bool)
{
bool A = ALogic->isHigh();
bool B = BLogic->isHigh();
bool C = CLogic->isHigh();
bool D = DLogic->isHigh();
bool lt = ltLogic->isHigh(); // Lamp test
bool rb = rbLogic->isHigh(); // Ripple Blank
bool en = enLogic->isHigh(); // Enable (store)
int n = A + 2*B + 4*C + 8*D;
// if ( n > 9 ) n = 0;
bool out[7];
if (lt) // Lamp test
{
if (rb) // Ripple blanking
{
if (en) // Enable (store)
{
for ( int i=0; i<7; i++ )
{
out[i] = oldOut[i];
}
}
else
{
for ( int i=0; i<7; i++ )
{
out[i] = numbers[n][i];
oldOut[i] = out[i];
}
}
}
else
{
for ( int i=0; i<7; i++ )
{
out[i] = false;
}
}
}
else
{
for ( int i=0; i<7; i++ )
{
out[i] = true;
}
}
for ( int i=0; i<7; i++ )
{
outLogic[i]->setHigh( out[i] );
}
}
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