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/* $Id: drv_NULL.c,v 1.6 2004/06/26 12:04:59 reinelt Exp $
*
* NULL driver (for testing)
*
* Copyright 2004 Michael Reinelt <reinelt@eunet.at>
* Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* 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: drv_NULL.c,v $
* Revision 1.6 2004/06/26 12:04:59 reinelt
*
* uh-oh... the last CVS log message messed up things a lot...
*
* Revision 1.5 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 1.4 2004/06/20 10:09:54 reinelt
*
* 'const'ified the whole source
*
* Revision 1.3 2004/06/06 06:51:59 reinelt
*
* do not display end splash screen if quiet=1
*
* Revision 1.2 2004/06/02 09:41:19 reinelt
*
* prepared support for startup splash screen
*
* Revision 1.1 2004/05/31 16:39:06 reinelt
*
* added NULL display driver (for debugging/profiling purposes)
* added backlight/contrast initialisation for matrixOrbital
* added Backlight initialisation for Cwlinux
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_NULL
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "debug.h"
#include "cfg.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_bar.h"
#include "drv.h"
#include "drv_generic_text.h"
static char Name[] = "NULL";
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
static void drv_NULL_write (const __attribute__((unused)) int row,
const __attribute__((unused)) int col,
const __attribute__((unused)) char *data,
const __attribute__((unused)) int len)
{
/* empty */
}
static void drv_NULL_defchar (const __attribute__((unused)) int ascii,
const __attribute__((unused)) unsigned char *matrix)
{
/* empty */
}
static int drv_NULL_start (const char *section)
{
char *s;
s = cfg_get(section, "Size", "20x4");
if (s == NULL || *s == '\0') {
error ("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
free(s);
return -1;
}
if (sscanf(s, "%dx%d", &DCOLS, &DROWS) != 2 || DROWS < 1 || DCOLS < 1) {
error ("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source);
free(s);
return -1;
}
free (s);
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
/* none at the moment... */
/****************************************/
/*** widget callbacks ***/
/****************************************/
/* using drv_generic_text_draw(W) */
/* using drv_generic_text_bar_draw(W) */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_NULL_list (void)
{
printf ("generic");
return 0;
}
/* initialize driver & display */
int drv_NULL_init (const char *section, const __attribute__((unused)) int quiet)
{
WIDGET_CLASS wc;
int ret;
/* display preferences */
XRES = 6; /* pixel width of one char */
YRES = 8; /* pixel height of one char */
CHARS = 8; /* number of user-defineable characters */
CHAR0 = 0; /* ASCII of first user-defineable char */
GOTO_COST = 2; /* number of bytes a goto command requires */
/* real worker functions */
drv_generic_text_real_write = drv_NULL_write;
drv_generic_text_real_defchar = drv_NULL_defchar;
/* start display */
if ((ret = drv_NULL_start (section)) != 0)
return ret;
/* initialize generic text driver */
if ((ret = drv_generic_text_init(section, Name)) != 0)
return ret;
/* initialize generic bar driver */
if ((ret = drv_generic_text_bar_init(1)) != 0)
return ret;
/* add fixed chars to the bar driver */
drv_generic_text_bar_add_segment ( 0, 0,255, 32); /* ASCII 32 = blank */
drv_generic_text_bar_add_segment (255,255,255,'*'); /* asterisk */
/* register text widget */
wc = Widget_Text;
wc.draw = drv_generic_text_draw;
widget_register(&wc);
/* register bar widget */
wc = Widget_Bar;
wc.draw = drv_generic_text_bar_draw;
widget_register(&wc);
/* register plugins */
/* none at the moment... */
return 0;
}
/* close driver & display */
int drv_NULL_quit (const __attribute__((unused)) int quiet) {
info("%s: shutting down.", Name);
drv_generic_text_quit();
return (0);
}
DRIVER drv_NULL = {
name: Name,
list: drv_NULL_list,
init: drv_NULL_init,
quit: drv_NULL_quit,
};
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