From 927b0b86ce4fffd3fc1645d6ece156fdd6bc31fc Mon Sep 17 00:00:00 2001
From: reinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>
Date: Tue, 27 Jan 2004 06:34:14 +0000
Subject: [lcd4linux @ 2004-01-27 06:34:14 by reinelt] Cwlinux driver portet to
 NextGeneration (compiles, but not tested!)

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@341 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
---
 drv_Cwlinux.c | 343 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 343 insertions(+)
 create mode 100644 drv_Cwlinux.c

(limited to 'drv_Cwlinux.c')

diff --git a/drv_Cwlinux.c b/drv_Cwlinux.c
new file mode 100644
index 0000000..87c43cc
--- /dev/null
+++ b/drv_Cwlinux.c
@@ -0,0 +1,343 @@
+/* $Id: drv_Cwlinux.c,v 1.1 2004/01/27 06:34:14 reinelt Exp $
+ *
+ * new style driver for Cwlinux display modules
+ *
+ * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at>
+ * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * 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_Cwlinux.c,v $
+ * Revision 1.1  2004/01/27 06:34:14  reinelt
+ * Cwlinux driver portet to NextGeneration (compiles, but not tested!)
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_Cwlinux
+ *
+ */
+
+#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[]="Cwlinux";
+
+static int Model;
+static int Protocol;
+
+// Fixme:
+// static int GPO[8];
+static int GPOS;
+
+
+typedef struct {
+  int type;
+  char *name;
+  int rows;
+  int cols;
+  int xres;
+  int gpos;
+  int protocol;
+} MODEL;
+
+// Fixme: number of gpo's should be verified
+
+static MODEL Models[] = {
+  { 0x01, "CW1602",   2, 16,  5,  0,  1 },
+  { 0x02, "CW12232",  4, 40,  6,  0,  2 },
+  { 0xff, "Unknown", -1, -1, -1, -1, -1 }
+};
+
+
+// ****************************************
+// ***  hardware dependant functions    ***
+// ****************************************
+
+static void drv_CW_goto (int row, int col)
+{
+  char cmd[6]="\376Gxy\375";
+  cmd[2]=(char)col;
+  cmd[3]=(char)row;
+  drv_generic_serial_write(cmd, 5);
+}
+
+
+static void drv_CW1602_defchar (int ascii, char *buffer)
+{
+  int i;
+  char cmd[12]="\376Nn12345678\375";
+
+  cmd[2]=(char)(ascii+1);
+
+  for (i=0; i<8; i++) {
+    cmd[3+i]=buffer[i];
+  }
+  drv_generic_serial_write(cmd,12);
+  usleep(20);  // delay for cw1602 to settle the character defined!
+}
+
+
+static void drv_CW12232_defchar (int ascii, char *buffer)
+{
+  int i, j;
+  char cmd[10]="\376Nn123456\375";
+  
+  cmd[2]=(char)(ascii+1);
+  
+  // The CW12232 uses a vertical bitmap layout,
+  // so we have to 'rotate' the bitmap.
+  
+  for (i=0; i<6;i++) {
+    cmd[3+i]=0;
+    for (j=0; j<8;j++) {
+      if (buffer[j] & (1<<(5-i))) {
+	cmd[3+i]|=(1<<j);
+      }
+    }
+  }
+  drv_generic_serial_write (cmd, 10);
+}
+
+
+static int drv_CW_start (char *section)
+{
+  int i;  
+  char *model;
+  
+  model=cfg_get(section, "Model", NULL);
+  if (model!=NULL && *model!='\0') {
+    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);
+  } else {
+    error ("%s: no '%s.Model' entry from %s", Name, section, cfg_source());
+    return -1;
+  }
+  
+  // open serial port
+  if (drv_generic_serial_open(section, Name)<0) return -1;
+
+  // this does not work as I'd expect it...
+#if 0
+  // read firmware version
+  generic_serial_read(buffer,sizeof(buffer));
+  usleep(100000);
+  generic_serial_write ("\3761", 2);
+  usleep(100000);
+  generic_serial_write ("\375", 1);
+  usleep(100000);
+  if (generic_serial_read(buffer,2)!=2) {
+    info ("unable to read firmware version!");
+  }
+  info ("Cwlinux Firmware %d.%d", (int)buffer[0], (int)buffer[1]);
+#endif
+
+  // initialize global variables
+  DROWS    = Models[Model].rows;
+  DCOLS    = Models[Model].cols;
+  XRES     = Models[Model].xres;
+  GPOS     = Models[Model].gpos;
+  Protocol = Models[Model].protocol;
+
+#if 0
+  drv_generic_serial_write("\376X\375",3); // Clear Display
+#else
+  // for some mysterious reason, we have to sleep after 
+  // the command _and_ after the CMD_END...
+  usleep(20);
+  drv_generic_serial_write("\376X",2); // Clear Display
+  usleep(20);
+  drv_generic_serial_write("\375",1);  // Command End
+  usleep(20);
+#endif
+
+  drv_generic_serial_write ("\376D\375", 3); // auto line wrap off
+  drv_generic_serial_write ("\376R\375", 3); // auto scroll off
+  drv_generic_serial_write ("\376K\375", 3); // underline cursor off
+  drv_generic_serial_write ("\376B\375", 3); // backlight on
+
+  return 0;
+}
+
+
+// ****************************************
+// ***            plugins               ***
+// ****************************************
+
+
+static void plugin_backlight (RESULT *result, RESULT *arg1)
+{
+  char cmd[5]="\376A_\375";
+  double backlight;
+  
+  backlight=R2N(arg1);
+  if (backlight<0) backlight=0;
+  if (backlight>8) backlight=8;
+
+  switch ((int)backlight) {
+  case 0:
+    drv_generic_serial_write ("\376F\375", 3); // backlight off
+    break;
+  case 8:
+    drv_generic_serial_write ("\376B\375", 3); // backlight on
+    break;
+  default:
+    cmd[2]=(char)backlight;
+    drv_generic_serial_write (cmd, 4); // backlight level
+    break;
+  }
+
+  SetResult(&result, R_NUMBER, &backlight); 
+}
+
+
+// ****************************************
+// ***        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_CW_list (void)
+{
+  int i;
+  
+  for (i=0; Models[i].type!=0xff; i++) {
+    printf ("%s ", Models[i].name);
+  }
+  return 0;
+}
+
+
+// initialize driver & display
+int drv_CW_init (char *section)
+{
+  WIDGET_CLASS wc;
+  int ret;  
+  
+  // display preferences
+  XRES  = 6;      // pixel width of one char 
+  YRES  = 8;      // pixel height of one char 
+  CHARS = 8;      // number of user-defineable characters
+  CHAR0 = 128;    // ASCII of first user-defineable char
+  GOTO_COST = 3;  // number of bytes a goto command requires
+
+  // real worker functions
+  drv_generic_text_real_write   = drv_generic_serial_write;
+  drv_generic_text_real_goto    = drv_CW_goto;
+
+  switch (Protocol) {
+    case 1:
+      drv_generic_text_real_defchar = drv_CW1602_defchar;
+      break;
+    case 2:
+      drv_generic_text_real_defchar = drv_CW12232_defchar;
+      break;
+  }
+  
+  // start display
+  if ((ret=drv_CW_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
+  
+  // 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
+  AddFunction ("backlight", 1, plugin_backlight);
+  
+  return 0;
+}
+
+
+// close driver & display
+int drv_CW_quit (void) {
+
+  info("%s: shutting down.", Name);
+  drv_generic_serial_close();
+  drv_generic_text_quit();
+  
+  return (0);
+}
+
+
+DRIVER drv_Cwlinux = {
+  name: Name,
+  list: drv_CW_list,
+  init: drv_CW_init,
+  quit: drv_CW_quit, 
+};
+
-- 
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