lcd4linux.git - lcd4linux Debian packaging

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author	reinelt <>	2005-08-21 08:18:56 +0000
committer	reinelt <>	2005-08-21 08:18:56 +0000
commit	037aec3232425cdbe20af8ef24b69b0826717bd3 (patch)
tree	049e41d701136d448e2c1ad2f64c36e5c1a4dc9b /plugin_uptime.c
parent	be8cd41eb21ec3eaf60759aa7fcd032a5cebe4ff (diff)
download	lcd4linux-037aec3232425cdbe20af8ef24b69b0826717bd3.tar.gz

[lcd4linux @ 2005-08-21 08:18:56 by reinelt]

CrystalFontz ACK processing

Diffstat (limited to 'plugin_uptime.c')

0 files changed, 0 insertions, 0 deletions

/* $Id: drv_LCDLinux.c,v 1.8 2005/05/08 04:32:44 reinelt Exp $ * * driver for the LCD-Linux HD44780 kernel driver * http://lcd-linux.sourceforge.net * * Copyright (C) 2005 Michael Reinelt <reinelt@eunet.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. * * * $Log: drv_LCDLinux.c,v $ * Revision 1.8 2005/05/08 04:32:44 reinelt * CodingStyle added and applied * * Revision 1.7 2005/05/02 05:15:46 reinelt * make busy-flag checking configurable for LCD-Linux driver * * Revision 1.6 2005/04/30 06:02:09 reinelt * LCD-Linux display size set up from lcd4linux.conf * * Revision 1.5 2005/04/09 07:36:42 reinelt * updated LCD-Linux driver to version 0.8.8 * * Revision 1.4 2005/02/24 07:06:48 reinelt * SimpleLCD driver added * * Revision 1.3 2005/02/24 06:51:40 reinelt * LCD-Linux driver GOTO_COST corrected * * Revision 1.2 2005/01/30 06:43:22 reinelt * driver for LCD-Linux finished * * Revision 1.1 2005/01/22 22:57:57 reinelt * LCD-Linux driver added * */ /* * * exported fuctions: * * struct DRIVER drv_LCDLinux * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> #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" #include "drv_LCDLinux.h" static char Name[] = "LCD-Linux"; static char Device[] = "/dev/lcd"; static int lcdlinux_fd = -1; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ static void drv_LL_send(const char *string, const int len) { int run, ret; for (run = 0; run < 10; run++) { ret = write(lcdlinux_fd, string, len); if (ret >= 0 || errno != EAGAIN) break; if (run > 0) info("%s: write(%s): EAGAIN #%d", Name, Device, run); usleep(1000); } if (ret < 0) { error("%s: write(%s) failed: %s", Name, Device, strerror(errno)); } else if (ret != len) { error("%s: partial write(%s): len=%d ret=%d", Name, Device, len, ret); } return; } static void drv_LL_clear(void) { /* Fixme: is there no otherway to clear the display? */ drv_LL_send("\14", 1); /* Form Feed */ } static void drv_LL_write(const int row, const int col, const char *data, int len) { int pos = row * DCOLS + col; if (lseek(lcdlinux_fd, pos, SEEK_SET) == (off_t) - 1) { error("%s: lseek(%s) failed: %s", Name, Device, strerror(errno)); } drv_LL_send(data, len); } static void drv_LL_defchar(const int ascii, const unsigned char *matrix) { char buffer[8]; int pos = 1024 + ascii; int i; for (i = 0; i < 8; i++) { buffer[i] = *matrix++ & 0x1f; } if (lseek(lcdlinux_fd, pos, SEEK_SET) == (off_t) - 1) { error("%s: lseek(%s) failed: %s", Name, Device, strerror(errno)); } drv_LL_send(buffer, 8); } static int drv_LL_start(const char *section, const int quiet) { char *s; int rows = -1, cols = -1; int use_busy = 0; struct lcd_driver buf; /* emit version information */ info("%s: Version %s", Name, LCD_LINUX_VERSION); /* get size from config file */ s = cfg_get(section, "Size", NULL); if (s != NULL || *s != '\0') { 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; } } free(s); /* open device */ lcdlinux_fd = open(Device, O_WRONLY); if (lcdlinux_fd == -1) { error("%s: open(%s) failed: %s", Name, Device, strerror(errno)); return -1; } /* get display size */ memset(&buf, 0, sizeof(buf)); if (ioctl(lcdlinux_fd, IOCTL_GET_PARAM, &buf) != 0) { error("%s: ioctl(IOCTL_GET_PARAM) failed: %s", Name, strerror(errno)); error("%s: Could not query display information!", Name); return -1; } info("%s: %dx%d display at 0x%x, %d controllers, flags=0x%02x:", Name, buf.disp_cols, buf.cntr_rows, buf.io, buf.num_cntr, buf.flags); info("%s: /proc support %sabled", Name, buf.flags & LCD_PROC_ON ? "en" : "dis"); info("%s: tty support %sabled", Name, buf.flags & LCD_ETTY_ON ? "en" : "dis"); info("%s: console support %sabled", Name, buf.flags & LCD_CONSOLE ? "en" : "dis"); info("%s: bus width %d bits", Name, buf.flags & LCD_4BITS_BUS ? 4 : 8); info("%s: font size %s", Name, buf.flags & LCD_5X10_FONT ? "5x10" : "5x8"); info("%s: busy-flag checking %sabled", Name, buf.flags & LCD_CHECK_BF ? "en" : "dis"); /* overwrite with size from lcd4linux.conf */ if ((rows > 0 && rows != buf.cntr_rows) || (cols > 0 && cols != buf.disp_cols)) { info("%s: changing size to %dx%d", Name, cols, rows); buf.cntr_rows = rows; buf.disp_cols = cols; if (ioctl(lcdlinux_fd, IOCTL_SET_PARAM, &buf) != 0) { error("%s: ioctl(IOCTL_SET_PARAM) failed: %s", Name, strerror(errno)); error("%s: Could not set display geometry!", Name); return -1; } } DROWS = buf.cntr_rows; DCOLS = buf.disp_cols; /* overwrite busy-flag checking from lcd4linux.conf */ cfg_number(section, "UseBusy", 0, 0, 1, &use_busy); if (use_busy && !(buf.flags & LCD_CHECK_BF)) { info("%s: activating busy-flag checking", Name); buf.flags |= LCD_CHECK_BF; if (ioctl(lcdlinux_fd, IOCTL_SET_PARAM, &buf) != 0) { error("%s: ioctl(IOCTL_SET_PARAM) failed: %s", Name, strerror(errno)); error("%s: Could not activate busy-flag checking!", Name); return -1; } } else if (!use_busy && (buf.flags & LCD_CHECK_BF)) { info("%s: deactivating busy-flag checking", Name); buf.flags &= ~LCD_CHECK_BF; if (ioctl(lcdlinux_fd, IOCTL_SET_PARAM, &buf) != 0) { error("%s: ioctl(IOCTL_SET_PARAM) failed: %s", Name, strerror(errno)); error("%s: Could not deactivate busy-flag checking!", Name); return -1; } } /* initialize display */ drv_LL_clear(); /* clear display */ if (!quiet) { char buffer[40]; qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); if (drv_generic_text_greet(buffer, "lcd-linux.sf.net")) { sleep(3); drv_LL_clear(); } } return 0; } /****************************************/ /*** plugins ***/ /****************************************/ /* none */ /****************************************/ /*** 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_LL_list(void) { printf("generic"); return 0; } /* initialize driver & display */ int drv_LL_init(const char *section, const int quiet) { WIDGET_CLASS wc; int asc255bug; int ret; /* 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 = -1; /* number of bytes a goto command requires */ /* real worker functions */ drv_generic_text_real_write = drv_LL_write; drv_generic_text_real_defchar = drv_LL_defchar; /* start display */ if ((ret = drv_LL_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 */ /* none */ return 0; } /* close driver & display */ int drv_LL_quit(const int quiet) { info("%s: shutting down.", Name); drv_generic_text_quit(); /* clear display */ drv_LL_clear(); /* say goodbye... */ if (!quiet) { drv_generic_text_greet("goodbye!", NULL); } /* close device */ close(lcdlinux_fd); return (0); } DRIVER drv_LCDLinux = { name:Name, list:drv_LL_list, init:drv_LL_init, quit:drv_LL_quit, };


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