#! /bin/sh # Common stub for a few missing GNU programs while installing. # Copyright (C) 1996, 1997 Free Software Foundation, Inc. # Franc,ois Pinard , 1996. # 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, or (at your option) # any later version. # This program 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., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. if test $# -eq 0; then echo 1>&2 "Try \`$0 --help' for more information" exit 1 fi case "$1" in -h|--h|--he|--hel|--help) echo "\ $0 [OPTION]... PROGRAM [ARGUMENT]... Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an error status if there is no known handling for PROGRAM. Options: -h, --help display this help and exit -v, --version output version information and exit Supported PROGRAM values: aclocal touch file \`aclocal.m4' autoconf touch file \`configure' autoheader touch file \`config.h.in' automake touch all \`Makefile.in' files bison create \`y.tab.[ch]', if possible, from existing .[ch] flex create \`lex.yy.c', if possible, from existing .c lex create \`lex.yy.c', if possible, from existing .c makeinfo touch the output file yacc create \`y.tab.[ch]', if possible, from existing .[ch]" ;; -v|--v|--ve|--ver|--vers|--versi|--versio|--version) echo "missing - GNU libit 0.0" ;; -*) echo 1>&2 "$0: Unknown \`$1' option" echo 1>&2 "Try \`$0 --help' for more information" exit 1 ;; aclocal) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if you modified \`acinclude.m4' or \`configure.in'. You might want to install the \`Automake' and \`Perl' packages. Grab them from any GNU archive site." touch aclocal.m4 ;; autoconf) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if you modified \`configure.in'. You might want to install the \`Autoconf' and \`GNU m4' packages. Grab them from any GNU archive site." touch configure ;; autoheader) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if you modified \`acconfig.h' or \`configure.in'. You might want to install the \`Autoconf' and \`GNU m4' packages. Grab them from any GNU archive site." files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' configure.in` test -z "$files" && files="config.h" touch_files= for f in $files; do case "$f" in *:*) touch_files="$touch_files "`echo "$f" | sed -e 's/^[^:]*://' -e 's/:.*//'`;; *) touch_files="$touch_files $f.in";; esac done touch $touch_files ;; automake) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if you modified \`Makefile.am', \`acinclude.m4' or \`configure.in'. You might want to install the \`Automake' and \`Perl' packages. Grab them from any GNU archive site." find . -type f -name Makefile.am -print | sed 's/\.am$/.in/' | while read f; do touch "$f"; done ;; bison|yacc) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if you modified a \`.y' file. You may need the \`Bison' package in order for those modifications to take effect. You can get \`Bison' from any GNU archive site." rm -f y.tab.c y.tab.h if [ $# -ne 1 ]; then eval LASTARG="\${$#}" case "$LASTARG" in *.y) SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'` if [ -f "$SRCFILE" ]; then cp "$SRCFILE" y.tab.c fi SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'` if [ -f "$SRCFILE" ]; then cp "$SRCFILE" y.tab.h fi ;; esac fi if [ ! -f y.tab.h ]; then echo >y.tab.h fi if [ ! -f y.tab.c ]; then echo 'main() { return 0; }' >y.tab.c fi ;; lex|flex) echo 1>&2 "\ WARNING: \`$1' is missing on your system. You should only need it if 
#
# $Id: README.Drivers,v 1.4 2001/03/09 13:08:11 ltoetsch Exp $
#

How to write new display drivers for lcd4linux

If you plan to write a new display driver for lcd4linux, you should follow
this guidelines:

* use Skeleton.c as a start point.
  You might also have a look at Text.c

* create a new sourcefile <drivername>.c and add it to the bottom of
  Makefile.am

* add an entry to configure.in

* there's no need for a <drivername>.h

* create one (or more) unique display names (your driver will be selected by
  this name in the 'Display'-line of lcd4linux.conf).

* include "display.h" in your driver, to get the LCD structure and various 
  BAR_ definitions

* include "cfg.h" if you need to access settings in the config file.

* create a LCD table at the bottom of your driver, and fill it with the
  appropriate values. Take care that you specify the correct bar capabilities
  of your display or driver:

  BAR_L:  horizontal bars headed left
  BAR_R:  horizontal bars headed right
  BAR_H2: driver supports horizontal dual-bars
  BAR_U:  vertical bars bottom-up
  BAR_D:  vertical bars top-down
  BAR_V2: driver supports vertical dual-bars

* edit display.c and create a reference to your LCD table:

     external LCD YourDriver[];

* extend the FAMILY table in display.c with your driver:

     FAMILY Driver[] = {
       { "Skeleton",      Skeleton },
       { "MatrixOrbital", MatrixOrbital },
       { "YourFamily",    YourDriver },
       { "" }
     };

* write the correspondig init(), clear(), put(), bar(), quit() and
  flush()-functions. There's no need to use a framebuffer and display its
  contents with the flush()- call (as in MatrixOrbital.c), you can directly
  write to the display in the put()- and bar()-functions, and use an empty
  flush()-function. But if you have a limited number of user-defined
  characters, and therefore you have to do some sort of 'character reduction'
  or similar stuff, you will have to use a framebuffer and the flush()-call.
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