/* $Id: display.h,v 1.22 2003/10/05 17:58:50 reinelt Exp $ * * framework for device drivers * * Copyright 1999, 2000 Michael Reinelt * * 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: display.h,v $ * Revision 1.22 2003/10/05 17:58:50 reinelt * libtool junk; copyright messages cleaned up * * Revision 1.21 2003/09/09 05:30:34 reinelt * even more icons stuff * * Revision 1.20 2003/09/01 04:09:34 reinelt * icons nearly finished, but MatrixOrbital only * * Revision 1.19 2003/08/24 05:17:58 reinelt * liblcd4linux patch from Patrick Schemitz * * Revision 1.18 2003/08/17 16:37:39 reinelt * more icon framework * * Revision 1.17 2003/08/17 12:11:58 reinelt * framework for icons prepared * * Revision 1.16 2003/07/24 04:48:09 reinelt * 'soft clear' needed for virtual rows * * Revision 1.15 2002/08/19 04:41:20 reinelt * introduced bar.c, moved bar stuff from display.h to bar.h * * Revision 1.14 2001/03/16 16:40:17 ltoetsch * implemented time bar * * Revision 1.13 2001/02/14 07:40:16 reinelt * * first (incomplete) GPO implementation * * Revision 1.12 2001/02/13 09:00:13 reinelt * * prepared framework for GPO's (general purpose outputs) * * Revision 1.11 2000/08/09 09:50:29 reinelt * * opened 0.98 development * removed driver-specific signal-handlers * added 'quit'-function to driver structure * added global signal-handler * * Revision 1.10 2000/03/26 18:46:28 reinelt * * bug in pixmap.c that leaded to empty bars fixed * name conflicts with X11 resolved * * Revision 1.9 2000/03/25 05:50:43 reinelt * * memory leak in Raster_flush closed * driver family logic changed * * Revision 1.8 2000/03/22 15:36:21 reinelt * * added '-l' switch (list drivers) * generic pixmap driver added * X11 Framework done * * Revision 1.7 2000/03/17 09:21:42 reinelt * * various memory statistics added * * Revision 1.6 2000/03/13 15:58:24 reinelt * * release 0.9 * moved row parsing to parser.c * all basic work finished * * Revision 1.5 2000/03/10 17:36:02 reinelt * * first unstable but running release * * Revision 1.4 2000/03/10 10:49:53 reinelt * * MatrixOrbital driver finished * * Revision 1.3 2000/03/06 06:04:06 reinelt * * minor cleanups * * Revision 1.2 2000/01/16 16:58:50 reinelt * *** empty log message *** * */ #ifndef _DISPLAY_H_ #define _DISPLAY_H_ typedef struct LCD { char *name; int rows; int cols; int xres; int yres; int bars; int icons; int gpos; int (*init) (struct LCD *Self); int (*clear) (int full); int (*put) (int x, int y, char *text); int (*bar) (int type, int x, int y, int max, int len1, int len2); int (*icon) (int num, int seq, int row, int col); int (*gpo) (int num, int val); int (*flush) (void); int (*quit) (void); } LCD; typedef struct { char *name; LCD *Model; } FAMILY; // output file for Raster driver // has to be defined here because it's referenced // even if the raster driver is not included! extern char *output; int lcd_list (void); int lcd_init (char *driver); int lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars, int *icons, int *gpos); int lcd_clear (int full); int lcd_put (int row, int col, char *text); int lcd_bar (int type, int row, int col, int max, int len1, int le2); int lcd_icon (int num, int seq, int row, int col); int lcd_gpo (int num, int val); int lcd_flush (void); int lcd_quit (void); #endif ef='#n50'>50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 
/* $Id$
 * $URL$
 *
 * generic driver helper for GPO's
 *
 * Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
 * Copyright (C) 2005 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.
 *
 */

/* 
 *
 * exported variables:
 *
 * extern int GPIS, GPOS;    number of Inputs and Outputs
 *
 *
 * these functions must be implemented by the real driver:
 *
 * int (*drv_generic_gpio_real_set) (const int num, const int val);
 *   sets GPO num to val, returns the actal value
 *
 * int (*drv_generic_gpio_real_get) (const int num);
 *   reads GPI num
 *
 *
 * exported fuctions:
 *
 * int drv_generic_gpio_init(const char *section, const char *driver)
 *   initializes the generic GPIO driver
 *
 * int drv_generic_gpio_clear(void);
 *   resets all GPO's
 *
 * int drv_generic_gpio_get (const int num)
 *   returns value og GPI #num
 *
 * int drv_generic_gpio_draw(WIDGET * W)
 *   'draws' GPO widget
 *   calls drv_generic_gpio_real_set()
 * 
 * int drv_generic_gpio_quit(void)
 *   closes the generic GPIO driver
 *
 */

#include "config.h"

#include <stdio.h>

#include "debug.h"
#include "plugin.h"
#include "widget.h"
#include "widget_gpo.h"

#include "drv_generic_gpio.h"

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

#define MAX_GPIS 32
#define MAX_GPOS 32


static char *Section = NULL;
static char *Driver = NULL;

static int GPI[MAX_GPIS];
static int GPO[MAX_GPOS];

int GPOS = 0;
int GPIS = 0;

int (*drv_generic_gpio_real_set) () = NULL;
int (*drv_generic_gpio_real_get) () = NULL;


static void drv_generic_gpio_plugin_gpi(RESULT * result, RESULT * arg1)
{
    int num;
    double val;

    num = R2N(arg1);

    if (num <= 0 || num > GPIS) {
	error("%s::GPI(%d): GPI out of range (1..%d)", Driver, num, GPIS);
	SetResult(&result, R_STRING, "");
	return;
    }

    val = drv_generic_gpio_get(num - 1);
    SetResult(&result, R_NUMBER, &val);
}


static void drv_generic_gpio_plugin_gpo(RESULT * result, const int argc, RESULT * argv[])
{
    int num, val;
    double gpo;

    switch (argc) {
    case 1:
	num = R2N(argv[0]);
	if (num <= 0 || num > GPOS) {
	    error("%s::GPO(%d): GPO out of range (1..%d)", Driver, num, GPOS);
	    SetResult(&result, R_STRING, "");
	    return;
	}
	gpo = GPO[num - 1];
	SetResult(&result, R_NUMBER, &gpo);
	break;
    case 2:
	num = R2N(argv[0]);
	val = R2N(argv[1]);
	if (num <= 0 || num > GPOS) {
	    error("%s::GPO(%d): GPO out of range (1..%d)", Driver, num, GPOS);
	    SetResult(&result, R_STRING, "");
	    return;
	}
	if (GPO[num - 1] != val) {
	    if (drv_generic_gpio_real_set)
		GPO[num - 1] = drv_generic_gpio_real_set(num - 1, val);
	}
	gpo = GPO[num - 1];
	SetResult(&result, R_NUMBER, &gpo);
	break;
    default:
	error("%s::GPO(): wrong number of parameters", Driver);
	SetResult(&result, R_STRING, "");
    }
}


int drv_generic_gpio_init(const char *section, const char *driver)
{
    WIDGET_CLASS wc;

    Section = (char *) section;
    Driver = (char *) driver;

    info("%s: using %d GPI's and %d GPO's", Driver, GPIS, GPOS);

    /* reset all GPO's */
    drv_generic_gpio_clear();

    /* register gpo widget */
    wc = Widget_GPO;
    wc.draw = drv_generic_gpio_draw;
    widget_register(&wc);

    /* register plugins */
    AddFunction("LCD::GPI", 1, drv_generic_gpio_plugin_gpi);
    AddFunction("LCD::GPO", -1, drv_generic_gpio_plugin_gpo);

    return 0;
}


int drv_generic_gpio_clear(void)
{
    int i;

    /* clear GPI buffer */
    for (i = 0; i < MAX_GPIS; i++) {
	GPI[i] = 0;
    }

    /* clear GPO buffer */
    for (i = 0; i < MAX_GPOS; i++) {
	GPO[i] = 0;
    }

    /* really clear GPO's */
    for (i = 0; i < GPOS; i++) {
	if (drv_generic_gpio_real_set)
	    GPO[i] = drv_generic_gpio_real_set(i, 0);

    }

    return 0;
}


int drv_generic_gpio_get(const int num)
{
    int val = 0;

    if (num < 0 || num >= GPIS) {
	error("%s: gpio_get(%d): GPI out of range (0..%d)", Driver, num + 1, GPIS);
	return -1;
    }

    if (drv_generic_gpio_real_get)
	val = drv_generic_gpio_real_get(num);

    GPI[num] = val;

    return val;
}


int drv_generic_gpio_draw(WIDGET * W)
{
    WIDGET_GPO *gpo = W->data;
    int num, val;

    num = W->row;
    val = P2N(&gpo->expression);

    if (num < 0 || num >= GPOS) {
	error("%s: gpio_draw(%d): GPO out of range (0..%d)", Driver, num + 1, GPOS);
	return -1;
    }

    if (GPO[num] != val) {
	if (drv_generic_gpio_real_set)
	    GPO[num] = drv_generic_gpio_real_set(num, val);
    }

    return 0;
}


int drv_generic_gpio_quit(void)
{
    info("%s: shutting down GPIO driver.", Driver);
    drv_generic_gpio_clear();
    return 0;
}
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