From 4e1eaa7205d8b7fbc64dc685d864b385a25602be Mon Sep 17 00:00:00 2001 From: reinelt Date: Mon, 31 May 2004 16:39:06 +0000 Subject: [lcd4linux @ 2004-05-31 16:39:05 by reinelt] added NULL display driver (for debugging/profiling purposes) added backlight/contrast initialisation for matrixOrbital added Backlight initialisation for Cwlinux git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@452 3ae390bd-cb1e-0410-b409-cd5a39f66f1f --- drv_NULL.c | 192 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 drv_NULL.c (limited to 'drv_NULL.c') diff --git a/drv_NULL.c b/drv_NULL.c new file mode 100644 index 0000000..4db7bb0 --- /dev/null +++ b/drv_NULL.c @@ -0,0 +1,192 @@ +/* $Id: drv_NULL.c,v 1.1 2004/05/31 16:39:06 reinelt Exp $ + * + * NULL driver (for testing) + * + * Copyright 2004 Michael Reinelt + * Copyright 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: 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 +#include +#include + +#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, +}; + -- cgit v1.2.3