[lcd4linux @ 2004-05-26 05:03:24 by reinelt]

MilfordInstruments driver ported

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@435 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

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, 
+};
+