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Diffstat (limited to '')
| -rw-r--r-- | drv_MilfordInstruments.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/drv_MilfordInstruments.c b/drv_MilfordInstruments.c new file mode 100644 index 0000000..534fbde --- /dev/null +++ b/drv_MilfordInstruments.c @@ -0,0 +1,259 @@ +/* $Id: drv_MilfordInstruments.c,v 1.1 2004/05/26 05:03:27 reinelt Exp $ + * + * driver for Milford Instruments 'BPK' piggy-back serial interface board + * for standard Hitachi 44780 compatible lcd modules. + * + * Copyright 2003,2004 Andy Baxter <andy@earthsong.free-online.co.uk> + * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> + * + * based on the MatrixOrbital driver which is + * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at> + * + * 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_MilfordInstruments.c,v $ + * Revision 1.1 2004/05/26 05:03:27 reinelt + * + * MilfordInstruments driver ported + * + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_MilfordInstruments + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "debug.h" +#include "cfg.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_generic_serial.h" + + +static char Name[]="MilfordInstruments"; + +typedef struct { + int type; + char *name; + int rows; + int cols; +} MODEL; + +static MODEL Models[] = { + { 216, "MI216", 2, 16 }, + { 220, "MI220", 2, 20 }, + { 240, "MI240", 2, 40 }, + { 420, "MI420", 4, 20 }, + { -1, "unknown", -1, -1 }, +}; + +static int Model; + + +// **************************************** +// *** hardware dependant functions *** +// **************************************** + +static void drv_MI_write (int row, int col, unsigned char *data, int len) +{ + char cmd[2] = "\376x"; + char ddbase = 128; + if (row & 1) { // i.e. if row is 1 or 3 + ddbase += 64; + } + if (row & 2) { // i.e. if row is 0 or 2. + ddbase += 20; + } + cmd[1] = (char)(ddbase+col); + drv_generic_serial_write(cmd,2); + + drv_generic_serial_write (data, len); +} + + +static void drv_MI_defchar (int ascii, unsigned char *buffer) +{ + char cmd[2]="\376x"; + if (ascii<8) { + cmd[1]=(char)(64+ascii*8); + drv_generic_serial_write (cmd, 2); + drv_generic_serial_write (buffer, 8); + } +} + + +static int drv_MI_start (char *section) +{ + int i; + char *model; + + model = cfg_get(section, "Model", NULL); + if (model == NULL && *model == '\0') { + error ("%s: no '%s.Model' entry from %s", Name, section, cfg_source()); + return -1; + } + + for (i=0; Models[i].type!=0xff; i++) { + if (strcasecmp(Models[i].name, model)==0) break; + } + if (Models[i].type==0xff) { + error ("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source()); + return -1; + } + Model=i; + info ("%s: using model '%s'", Name, Models[Model].name); + + if (drv_generic_serial_open(section, Name)<0) return -1; + + // initialize global variables + DROWS = Models[Model].rows; + DCOLS = Models[Model].cols; + + drv_generic_serial_write ("\376\001", 2); // clear screen + drv_generic_serial_write ("\376\014", 2); // cursor off + + return 0; +} + + +// **************************************** +// *** plugins *** +// **************************************** + +// none at the moment... + + +// **************************************** +// *** 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_MI_list (void) +{ + int i; + + for (i = 0; Models[i].type > 0; i++) { + printf ("%s ", Models[i].name); + } + return 0; +} + + +// initialize driver & display +int drv_MI_init (char *section) +{ + WIDGET_CLASS wc; + 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 = 4; // number of bytes a goto command requires + + // real worker functions + drv_generic_text_real_write = drv_MI_write; + drv_generic_text_real_defchar = drv_MI_defchar; + + + // start display + if ((ret=drv_MI_start (section))!=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) + 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 (255,255,255,255); // 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 at the moment... + + return 0; +} + + +// close driver & display +int drv_MI_quit (void) { + + info("%s: shutting down.", Name); + drv_generic_serial_close(); + drv_generic_text_quit(); + + return (0); +} + + +DRIVER drv_MilfordInstruments = { + name: Name, + list: drv_MI_list, + init: drv_MI_init, + quit: drv_MI_quit, +}; + |