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Diffstat (limited to 'src/electronics/components/ecbcdto7segment.cpp')
| -rw-r--r-- | src/electronics/components/ecbcdto7segment.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/electronics/components/ecbcdto7segment.cpp b/src/electronics/components/ecbcdto7segment.cpp new file mode 100644 index 0000000..fb210ea --- /dev/null +++ b/src/electronics/components/ecbcdto7segment.cpp @@ -0,0 +1,158 @@ +/*************************************************************************** + * 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] ); + } +} |