/* $Id: widget_bar.c,v 1.17 2005/12/18 16:18:36 reinelt Exp $ * * bar widget handling * * Copyright (C) 2003, 2004 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * 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_bar.c,v $ * Revision 1.17 2005/12/18 16:18:36 reinelt * GPO's added again * * Revision 1.16 2005/05/08 04:32:45 reinelt * CodingStyle added and applied * * Revision 1.15 2005/05/06 06:37:34 reinelt * hollow bar patch from geronet * * Revision 1.14 2005/01/18 06:30:24 reinelt * added (C) to all copyright statements * * Revision 1.13 2004/11/29 04:42:07 reinelt * removed the 99999 msec limit on widget update time (thanks to Petri Damsten) * * Revision 1.12 2004/06/26 12:05:00 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.11 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 1.10 2004/03/11 06:39:59 reinelt * big patch from Martin: * - reuse filehandles * - memory leaks fixed * - earlier busy-flag checking with HD44780 * - reuse memory for strings in RESULT and hash * - netdev_fast to wavid time-consuming regex * * Revision 1.9 2004/03/06 20:31:16 reinelt * Complete rewrite of the evaluator to get rid of the code * from mark Morley (because of license issues). * The new Evaluator does a pre-compile of expressions, and * stores them in trees. Therefore it should be reasonable faster... * * Revision 1.8 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 1.7 2004/01/30 20:57:56 reinelt * HD44780 patch from Martin Hejl * dmalloc integrated * * Revision 1.6 2004/01/29 04:40:03 reinelt * every .c file includes "config.h" now * * Revision 1.5 2004/01/23 04:54:00 reinelt * icon widget added (not finished yet!) * * Revision 1.4 2004/01/20 14:25:12 reinelt * some reorganization * moved drv_generic to drv_generic_serial * moved port locking stuff to drv_generic_serial * * Revision 1.3 2004/01/20 12:45:47 reinelt * "Default screen" working with MatrixOrbital * * Revision 1.2 2004/01/20 04:51:39 reinelt * moved generic stuff from drv_MatrixOrbital to drv_generic * implemented new-stylish bars which are nearly finished * * Revision 1.1 2004/01/18 21:25:16 reinelt * Framework for bar widget opened * */ /* * exported functions: * * WIDGET_CLASS Widget_Bar * the bar widget * */ #include "config.h" #include #include #include #include #include "debug.h" #include "cfg.h" #include "evaluator.h" #include "timer.h" #include "widget.h" #include "widget_bar.h" #ifdef WITH_DMALLOC #include #endif void widget_bar_update(void *Self) { WIDGET *W = (WIDGET *) Self; WIDGET_BAR *Bar = W->data; RESULT result = { 0, 0, 0, NULL }; double val1, val2; double min, max; /* evaluate expressions */ val1 = 0.0; if (Bar->tree1 != NULL) { Eval(Bar->tree1, &result); val1 = R2N(&result); DelResult(&result); } val2 = val1; if (Bar->tree2 != NULL) { Eval(Bar->tree2, &result); val2 = R2N(&result); DelResult(&result); } /* minimum: if expression is empty, do auto-scaling */ if (Bar->tree_min != NULL) { Eval(Bar->tree_min, &result); min = R2N(&result); DelResult(&result); } else { min = Bar->min; if (val1 < min) min = val1; if (val2 < min) min = val2; } /* maximum: if expression is empty, do auto-scaling */ if (Bar->tree_max != NULL) { Eval(Bar->tree_max, &result); max = R2N(&result); DelResult(&result); } else { max = Bar->max; if (val1 > max) max = val1; if (val2 > max) max = val2; } /* calculate bar values */ Bar->min = min; Bar->max = ma
/* $Id$
 * $URL$
 *
 * generic driver helper for i2c displays
 *
 * Copyright (C) 2005 Luis Correia <lfcorreia@users.sf.net>
 * 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 fuctions:
 *
 * int drv_generic_i2c_open (void)
 *   reads 'Port' entry from config and opens
 *   the i2c port
 *   returns 0 if ok, -1 on failure
 *
 * int drv_generic_i2c_close (void)
 *   closes i2c port
 *   returns 0 if ok, -1 on failure
 *
 * unsigned char drv_generic_i2c_wire (char *name, char *deflt)
 *   reads wiring for one data signal from config
 *   returns 1<<bitpos or 255 on error
 *
 * void drv_generic_i2c_data (unsigned char value)
 *   put data bits on DB1..DB8
 *
 * void drv_generic_i2c_command(unsigned char command, unsigned char *data,unsigned char length)
 *   send command and the data to the i2c device
 * 
 */

#ifndef _DRV_GENERIC_I2C_H_
#define _DRV_GENERIC_I2C_H_

int drv_generic_i2c_open(const char *section, const char *driver);
int drv_generic_i2c_close(void);
unsigned char drv_generic_i2c_wire(const char *name, const char *deflt);
void drv_generic_i2c_data(const unsigned char data);
void drv_generic_i2c_command(const unsigned char command, /*const */ unsigned char *data, const unsigned char length);

#endif
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