/* $Id: drv_BWCT.c,v 1.6 2006/01/30 06:25:48 reinelt Exp $ * * new style driver for BWCT USB LCD displays * * 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: drv_BWCT.c,v $ * Revision 1.6 2006/01/30 06:25:48 reinelt * added CVS Revision * * Revision 1.5 2006/01/05 15:53:45 nicowallmeier * fixed compatility with gcc 2.95 * * Revision 1.4 2005/12/11 14:55:28 reinelt * contrast range for BWCT is 0..255, not 0..100 * * Revision 1.3 2005/05/08 04:32:43 reinelt * CodingStyle added and applied * * Revision 1.2 2005/01/18 06:30:22 reinelt * added (C) to all copyright statements * * Revision 1.1 2004/09/24 21:41:00 reinelt * new driver for the BWCT USB LCD interface board. * */ /* * * exported fuctions: * * struct DRIVER drv_BWCT * */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "qprintf.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_text.h" #define LCD_USB_VENDOR 0x03da #define LCD_USB_DEVICE 0x0002 #define LCD_RESET 1 #define LCD_CMD 2 #define LCD_DATA 3 #define LCD_CONTRAST 4 static char Name[] = "BWCT"; static usb_dev_handle *lcd; static int interface; extern int usb_debug; extern int got_signal; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ static int drv_BW_open(void) { struct usb_bus *busses, *bus; struct usb_device *dev; lcd = NULL; info("%s: scanning USB for BWCT LCD...", Name); usb_debug = 0; usb_init(); usb_find_busses(); usb_find_devices(); busses = usb_get_busses(); for (bus = busses; bus; bus = bus->next) { for (dev = bus->devices; dev; dev = dev->next) { int c; if (dev->descriptor.idVendor != LCD_USB_VENDOR) continue; /* Loop through all of the configurations */ for (c = 0; c < dev->descriptor.bNumConfigurations; c++) { int i; for (i = 0; i < dev->config[c].bNumInterfaces; i++) { int a; for (a = 0; a < dev->config[c].interface[i].num_altsetting; a++) { if ((dev->descriptor.idProduct == LCD_USB_DEVICE) || ((dev->config[c].interface[i].altsetting[a].bInterfaceClass == 0xff) && (dev->config[c].interface[i].altsetting[a].bInterfaceSubClass == 0x01))) { info("%s: found BWCT USB LCD on bus %s device %s", Name, bus->dirname, dev->filename); interface = i; lcd = usb_open(dev); if (usb_claim_interface(lcd, interface) < 0) { error("%s: usb_claim_interface() failed!", Name); return -1; } return 0; } } } } } } return -1; } static int drv_BW_close(void) { usb_release_interface(lcd, interface); usb_close(lcd); return 0; } static int drv_BW_send(int request, int value) { static int errors = 0; if (errors > 20) return -1; if (usb_control_msg(lcd, USB_TYPE_VENDOR, request, value, interface, NULL, 0, 1000) < 0) { error("%s: USB request failed!", Name); if (++errors > 20) { error("%s: too many USB errors, aborting.", Name); got_signal = -1; } return -1; } errors = 0; return 0; } static void drv_BW_command(const unsigned char cmd) { drv_BW_send(LCD_CMD, cmd); } static void drv_BW_clear(void) { drv_BW_command(0x01); /* clear display */ drv_BW_command(0x03); /* return home */ } static void drv_BW_write(const int row, const int col, const char *data, int len) { int pos; /* 16x4 Displays use a slightly different layout */ if (DCOLS == 16 && DROWS == 4) { pos = (row % 2) * 64 + (row / 2) * 16 + col; } else { pos = (row % 2) * 64 + (row / 2) * 20 + col; } drv_BW_command(0x80 | pos); while (len--) { drv_BW_send(LCD_DATA, *data++); } } static void drv_BW_defchar(const int ascii, const unsigned char *matrix) { int i; drv_BW_command(0x40 | 8 * ascii); for (i = 0; i < 8; i++) { drv_BW_send(LCD_DATA, *matrix++ & 0x1f); } } static int drv_BW_contrast(int contrast) { if (contrast < 0) contrast = 0; if (contrast > 255) contrast = 255; drv_BW_send(LCD_CONTRAST, contrast); return contrast; } static int drv_BW_start(const char *section, const int quiet) { int contrast; int rows = -1, cols = -1; char *s; s = cfg_get(section, "Size", NULL); if (s == NULL || *s == '\0') { error("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); return -1; } if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) { error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } DROWS = rows; DCOLS = cols; if (drv_BW_open() < 0) { error("%s: could not find a BWCT USB LCD", Name); return -1; } /* reset */ drv_BW_send(LCD_RESET, 0); /* initialize display */ drv_BW_command(0x29); /* 8 Bit mode, 1/16 duty cycle, 5x8 font */ drv_BW_command(0x08); /* Display off, cursor off, blink off */ drv_BW_command(0x0c); /* Display on, cursor off, blink off */ drv_BW_command(0x06); /* curser moves to right, no shift */ if (cfg_number(section, "Contrast", 0, 0, 255, &contrast) > 0) { drv_BW_contrast(contrast); } drv_BW_clear(); /* clear display */ if (!quiet) { char buffer[40]; qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); if (drv_generic_text_greet(buffer, "www.bwct.de")) { sleep(3); drv_BW_clear(); } } return 0; } /****************************************/ /*** plugins ***/ /****************************************/ static void plugin_contrast(RESULT * result, RESULT * arg1) { double contrast; contrast = drv_BW_contrast(R2N(arg1)); SetResult(&result, R_NUMBER, &contrast); } /****************************************/ /*** widget callbacks ***/ /****************************************/ /* using drv_generic_text_draw(W) */ /* using drv_generic_text_icon_draw(W) */ /* using drv_generic_text_bar_draw(W) */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_BW_list(void) { printf("generic"); return 0; } /* initialize driver & display */ int drv_BW_init(const char *section, const int quiet) { WIDGET_CLASS wc; int asc255bug; int ret; info("%s: %s", Name, "$Revision: 1.6 $"); /* display preferences */ XRES = 5; /* 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_BW_write; drv_generic_text_real_defchar = drv_BW_defchar; /* start display */ if ((ret = drv_BW_start(section, quiet)) != 0) return ret; /* initialize generic text driver */ if ((ret = drv_generic_text_init(section, Name)) != 0) return ret; /* initialize generic icon driver */ if ((ret = drv_generic_text_icon_init()) != 0) return ret; /* initialize generic bar driver */ if ((ret = drv_generic_text_bar_init(0)) != 0) return ret; /* add fixed chars to the bar driver */ /* most displays have a full block on ascii 255, but some have kind of */ /* an 'inverted P'. If you specify 'asc255bug 1 in the config, this */ /* char will not be used, but rendered by the bar driver */ cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug); drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */ if (!asc255bug) drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */ /* register text widget */ wc = Widget_Text; wc.draw = drv_generic_text_draw; widget_register(&wc); /* register icon widget */ wc = Widget_Icon; wc.draw = drv_generic_text_icon_draw; widget_register(&wc); /* register bar widget */ wc = Widget_Bar; wc.draw = drv_generic_text_bar_draw; widget_register(&wc); /* register plugins */ AddFunction("LCD::contrast", 1, plugin_contrast); return 0; } /* close driver & display */ int drv_BW_quit(const int quiet) { info("%s: shutting down.", Name); drv_generic_text_quit(); /* clear display */ drv_BW_clear(); /* say goodbye... */ if (!quiet) { drv_generic_text_greet("goodbye!", NULL); } debug("closing USB connection"); drv_BW_close(); return (0); } DRIVER drv_BWCT = { name:Name, list:drv_BW_list, init:drv_BW_init, quit:drv_BW_quit, }; > 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 
/* $Id: widget.c,v 1.19 2005/05/08 04:32:45 reinelt Exp $
 *
 * generic widget handling
 *
 * Copyright (C) 2003, 2004 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: widget.c,v $
 * Revision 1.19  2005/05/08 04:32:45  reinelt
 * CodingStyle added and applied
 *
 * Revision 1.18  2005/01/18 06:30:24  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.17  2004/06/26 12:05:00  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.16  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 1.15  2004/06/20 10:09:56  reinelt
 *
 * 'const'ified the whole source
 *
 * Revision 1.14  2004/05/26 11:37:36  reinelt
 *
 * Curses driver ported.
 *
 * Revision 1.13  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 1.12  2004/02/18 06:39:20  reinelt
 * T6963 driver for graphic displays finished
 *
 * Revision 1.11  2004/01/30 20:57:56  reinelt
 * HD44780 patch from Martin Hejl
 * dmalloc integrated
 *
 * Revision 1.10  2004/01/29 04:40:03  reinelt
 * every .c file includes "config.h" now
 *
 * Revision 1.9  2004/01/23 04:53:57  reinelt
 * icon widget added (not finished yet!)
 *
 * Revision 1.8  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 1.7  2004/01/13 08:18:20  reinelt
 * timer queues added
 * liblcd4linux deactivated turing transformation to new layout
 *
 * Revision 1.6  2004/01/11 18:26:02  reinelt
 * further widget and layout processing
 *
 * Revision 1.5  2004/01/11 09:26:15  reinelt
 * layout starts to exist...
 *
 * Revision 1.4  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
 *
 * Revision 1.3  2004/01/10 17:34:40  reinelt
 * further matrixOrbital changes
 * widgets initialized
 *
 * Revision 1.2  2003/10/05 17:58:50  reinelt
 * libtool junk; copyright messages cleaned up
 *
 * Revision 1.1  2003/09/19 03:51:29  reinelt
 * minor fixes, widget.c added
 *
 */

/* 
 * exported functions:
 *
 * int widget_junk(void)
 *   does something
 *
 */


#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include "debug.h"
#include "cfg.h"
#include "widget.h"

#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif


/* we use a static array of widgets and not realloc() */
#define MAX_WIDGETS 256

static WIDGET_CLASS *Classes = NULL;
static int nClasses = 0;

static WIDGET *Widgets = NULL;
static int nWidgets = 0;

static int widget_added = 0;

int widget_register(WIDGET_CLASS * widget)
{
    int i;

    /* sanity check: disallow widget registering after at least one */
    /* widget has been added, because we use realloc here, and there may  */
    /* be pointers to the old memory area */
    if (widget_added) {
	error("internal error: register_widget(%s) after add_widget()", widget->name);
	return -1;
    }

    for (i = 0; i < nClasses; i++) {
	if (strcasecmp(widget->name, Classes[i].name) == 0) {
	    error("internal error: widget '%s' already exists!", widget->name);
	    return -1;
	}
    }

    nClasses++;
    Classes = realloc(Classes, nClasses * sizeof(WIDGET_CLASS));
    Classes[nClasses - 1] = *widget;

    return 0;
}

void widget_unregister(void)
{
    int i;
    for (i = 0; i < nWidgets; i++) {
	Widgets[i].class->quit(&(Widgets[i]));
    }
    free(Widgets);

    free(Classes);

    nWidgets = 0;
    nClasses = 0;
}

int widget_add(const char *name, const int row, const int col)
{
    int i;
    char *section;
    char *class;

    WIDGET_CLASS *Class;
    WIDGET *Widget;

    /* prepare config section */
    /* strlen("Widget:")=7 */
    section = malloc(strlen(name) + 8);
    strcpy(section, "Widget:");
    strcat(section, name);

    /* get widget class */
    class = cfg_get(section, "class", NULL);
    if (class == NULL || *class == '\0') {
	error("error: widget '%s' has no class!", name);
	if (class)
	    free(class);
	return -1;
    }
    free(section);
    /* lookup widget class */
    Class = NULL;
    for (i = 0; i < nClasses; i++) {
	if (strcasecmp(class, Classes[i].name) == 0) {
	    Class = &(Classes[i]);
	    break;
	}
    }
    if (i == nClasses) {
	error("widget '%s': class '%s' not supported", name, class);
	if (class)
	    free(class);
	return -1;
    }
    if (class)
	free(class);

    /* do NOT use realloc here because there may be pointers to the old */
    /* memory area, which would point to nowhere if realloc moves the area */
    if (Widgets == NULL) {
	Widgets = malloc(MAX_WIDGETS * sizeof(WIDGET));
	if (Widgets == NULL) {
	    error("internal error: allocation of widget buffer failed: %s", strerror(errno));
	    return -1;
	}
    }

    /* another sanity check */
    if (nWidgets >= MAX_WIDGETS) {
	error("internal error: widget buffer full!");
	return -1;
    }

    Widget = &(Widgets[nWidgets]);
    nWidgets++;

    Widget->name = (char *) name;
    Widget->class = Class;
    Widget->row = row;
    Widget->col = col;

    if (Class->init != 0) {
	Class->init(Widget);
    }

    return 0;
}