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-rw-r--r--drv_MilfordInstruments.c285
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diff --git a/drv_MilfordInstruments.c b/drv_MilfordInstruments.c
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+/* $Id: drv_MilfordInstruments.c 840 2007-09-09 12:17:42Z michael $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_MilfordInstruments.c $
+ *
+ * driver for Milford Instruments 'BPK' piggy-back serial interface board
+ * for standard Hitachi 44780 compatible lcd modules.
+ *
+ * Copyright (C) 2003, 2004 Andy Baxter <andy@earthsong.free-online.co.uk>
+ * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * based on the MatrixOrbital driver which is
+ * Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.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.
+ *
+ */
+
+/*
+ *
+ * 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_clear(void)
+{
+ drv_generic_serial_write("\376\001", 2); /* clear screen */
+}
+
+
+static void drv_MI_write(const int row, const int col, const char *data, const int len)
+{
+ char cmd[2] = "\376x";
+ int 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(const int ascii, const 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(const char *section, const int quiet)
+{
+ 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_MI_clear();
+ drv_generic_serial_write("\376\014", 2); /* cursor off */
+
+ if (!quiet) {
+ if (drv_generic_text_greet(Models[Model].name, "Milford Instruments")) {
+ sleep(3);
+ drv_MI_clear();
+ }
+ }
+
+ 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(const char *section, const int quiet)
+{
+ WIDGET_CLASS wc;
+ int ret;
+
+ info("%s: %s", Name, "$Rev: 840 $");
+
+ /* 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, 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 */
+ 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(const int quiet)
+{
+
+ info("%s: shutting down.", Name);
+
+ drv_generic_text_quit();
+
+ /* clear display */
+ drv_MI_clear();
+
+ /* say goodbye... */
+ if (!quiet) {
+ drv_generic_text_greet("goodbye!", NULL);
+ }
+
+ drv_generic_serial_close();
+
+ return (0);
+}
+
+
+DRIVER drv_MilfordInstruments = {
+ .name = Name,
+ .list = drv_MI_list,
+ .init = drv_MI_init,
+ .quit = drv_MI_quit,
+};
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