/* $Id: drv_MilfordInstruments.c,v 1.5 2004/05/31 05:38:02 reinelt Exp $ * * driver for Milford Instruments 'BPK' piggy-back serial interface board * for standard Hitachi 44780 compatible lcd modules. * * Copyright 2003,2004 Andy Baxter * Copyright 2004 The LCD4Linux Team * * based on the MatrixOrbital driver which is * 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: drv_MilfordInstruments.c,v $ * Revision 1.5 2004/05/31 05:38:02 reinelt * * fixed possible bugs with user-defined chars (clear high bits) * thanks to Andy Baxter for debugging the MilfordInstruments driver! * * Revision 1.4 2004/05/31 01:31:01 andy-b * * * fixed bug in Milford Instruments driver which drew extra graphics chars in * odd places when drawing double bars. (the display doesn't like it if you put * the escape character 0xfe inside a define char sequence). * * Revision 1.1 2004/05/26 05:03:27 reinelt * * MilfordInstruments driver ported * */ /* * * exported fuctions: * * struct DRIVER drv_MilfordInstruments * */ #include "config.h" #include #include #include #include #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 *matrix) { int i; char cmd[10]="\376x"; if (ascii<8) { cmd[1]=(char)(64+ascii*8); for ( i=0; i<8; i++) { cmd[i+2] = matrix[i] & 0x1f; }; drv_generic_serial_write (cmd, 10); } } 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) < 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))!=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, };