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/* $Id: drv_NULL.c,v 1.1 2004/05/31 16:39:06 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 1.1 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 (int row, int col, unsigned char *data, int len)
{
// empty
}
static void drv_NULL_defchar (int ascii, unsigned char *matrix)
{
// empty
}
static int drv_NULL_start (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 (char *section)
{
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 (void) {
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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