/* $Id: layout.c,v 1.22 2006/02/21 05:50:34 reinelt Exp $ * * new layouter framework * * Copyright (C) 2003 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux 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, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: layout.c,v $ * Revision 1.22 2006/02/21 05:50:34 reinelt * keypad support from Cris Maj * * Revision 1.21 2006/02/08 04:55:05 reinelt * moved widget registration to drv_generic_graphic * * Revision 1.20 2006/02/07 05:36:13 reinelt * Layers added to Layout * * Revision 1.19 2006/01/30 05:47:38 reinelt * graphic subsystem changed to full-color RGBA * * Revision 1.18 2006/01/23 06:17:18 reinelt * timer widget added * * Revision 1.17 2005/12/18 16:18:36 reinelt * GPO's added again * * Revision 1.16 2005/05/08 04:32:44 reinelt * CodingStyle added and applied * * Revision 1.15 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * * Revision 1.14 2004/06/26 12:04:59 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.13 2004/06/26 09:27:21 reinelt * * added '-W' to CFLAGS * changed all C++ comments to C ones * cleaned up a lot of signed/unsigned mistakes * * Revision 1.12 2004/06/20 10:09:56 reinelt * * 'const'ified the whole source * * Revision 1.11 2004/06/02 09:41:19 reinelt * * prepared support for startup splash screen * * Revision 1.10 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save CPU cycles on gettimeofday() * - add quit() functions to free allocated memory * - fixed lots of memory leaks * * Revision 1.9 2004/02/01 19:37:40 reinelt * got rid of every strtok() incarnation. * * Revision 1.8 2004/02/01 18:08:50 reinelt * removed strtok() from layout processing (took me hours to find this bug) * further strtok() removind should be done! * * Revision 1.7 2004/01/30 20:57:56 reinelt * HD44780 patch from Martin Hejl * dmalloc integrated * * Revision 1.6 2004/01/14 11:33:00 reinelt * new plugin 'uname' which does what it's called * text widget nearly finished * first results displayed on MatrixOrbital * * Revision 1.5 2004/01/13 08:18:19 reinelt * timer queues added * liblcd4linux deactivated turing transformation to new layout * * Revision 1.4 2004/01/12 03:51:01 reinelt * evaluating the 'Variables' section in the config file * * Revision 1.3 2004/01/11 18:26:02 reinelt * further widget and layout processing * * Revision 1.2 2004/01/11 09:26:15 reinelt * layout starts to exist... * * Revision 1.1 2004/01/10 20:22:33 reinelt * added new function 'cfg_list()' (not finished yet) * added layout.c (will replace processor.c someday) * added widget_text.c (will be the first and most important widget) * modified lcd4linux.c so that old-style configs should work, too * */ /* * exported functions: * * layout_init (char *section) * initializes the layouter * */ #include "config.h" #include #include #include #include #include "debug.h" #include "cfg.h" #include "widget.h" #include "layout.h" #ifdef WITH_DMALLOC #include #endif int layout_init(const char *layout) { char *section; char *list, *l; char *widget; int lay, row, col, num; info("initializing layout '%s'", layout); /* prepare config section */ /* strlen("Layout:")=7 */ section = malloc(strlen(layout) + 8);
#
# $Id: README.HD44780.GPO,v 1.2 2001/02/16 14:15:11 reinelt Exp $
#

Erweiterung der LCD Anzeige um 8 Ausgaenge (GPOs)

Man braucht:
1 Stk. 74HC573
1 Stk. ULN2803
8 Stk. RES 330R
8 Stk. LED rot 3mm

Schaltplan:
Die Schaltung wird parallel zum Display angeschlossen. 
INIT ist Pin 16 vom LPT am Rechner.
---|330r|--- das soll ein Widerstand 330 Ohm sein, 
             man kann aber auch 470 Ohm nehmen.
  ---|<---   das soll ein LED sein.
    Vcc      Versorgungsspannung 5V DC
    GND      Masse


           74HC573
        ______  ______              ULN2803
        |    |__|    |           ______  ______
 GND o--|1         20|---+ Vcc   |    |__|    |
  D0 o--|2         19|-----------|1         18|----|330r|---|<---+ Vcc
  D1 o--|3         18|-----------|2         17|----|330r|---|<---+ Vcc
  D2 o--|4         17|-----------|3         16|----|330r|---|<---+ Vcc
  D3 o--|5         16|-----------|4         15|----|330r|---|<---+ Vcc
  D4 o--|6         15|-----------|5         14|----|330r|---|<---+ Vcc
  D5 o--|7         14|-----------|6         13|----|330r|---|<---+ Vcc
  D6 o--|8         13|-----------|7         12|----|330r|---|<---+ Vcc
  D7 o--|9         12|-----------|8         11|----|330r|---|<---+ Vcc
INIT o--|10        11|-----------|9         10|----+ Vcc
        --------------           --------------
	
Statt der LED's kann man auch was anderes ansteuern. Der ULN2803 hat eine 
Open Kollektor Ausgang, der mit 30V belastet werden kann. Aber Vorsicht!!!

Die gesammte Schaltung nimmt max. ca. 130mA an 5V DC auf, ich nehme die 
Spannung vom Gameport. Bei mir klappts, ich uebernehme aber keine Garantie.

Wuppertal, den 13.02.2001

Carsten Nau
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