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+/* $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,
+};
+