[lcd4linux @ 2004-01-21 12:36:19 by reinelt]

Crystalfontz NextGeneration driver added

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@332 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 292 insertions, 0 deletions

diff --git a/drv_Crystalfontz.c b/drv_Crystalfontz.c
new file mode 100644
index 0000000..5c3bf1b
--- /dev/null
+++ b/drv_Crystalfontz.c
@@ -0,0 +1,292 @@
+/* $Id: drv_Crystalfontz.c,v 1.1 2004/01/21 12:36:19 reinelt Exp $
+ *
+ * new style driver for Crystalfontz 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_Crystalfontz.c,v $
+ * Revision 1.1  2004/01/21 12:36:19  reinelt
+ * Crystalfontz NextGeneration driver added
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_Crystalfontz
+ *
+ */
+
+#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_bar.h"
+#include "drv.h"
+#include "drv_generic_text.h"
+#include "drv_generic_serial.h"
+
+
+static char Name[]="Crystalfontz";
+
+static int Model;
+
+// Fixme: do we need PROTOCOL?
+static int GPOS, ICONS, PROTOCOL;
+
+// Fixme:
+// static int GPO[8];
+
+
+typedef struct {
+  int type;
+  char *name;
+  int rows;
+  int cols;
+  int gpos;
+  int protocol;
+} MODEL;
+
+// Fixme #1: number of gpo's should be verified
+// Fixme #2: protocol should be verified
+// Fixme #3: do CF displays have type numbers?
+
+static MODEL Models[] = {
+  { 0x26, "626",      2, 16, 0, 1 },
+  { 0x32, "632",      2, 16, 0, 1 },
+  { 0x34, "634",      4, 20, 0, 1 },
+  { 0x36, "636",      2, 16, 0, 1 },
+  { 0xff, "Unknown", -1, -1, 0, 0 }
+};
+
+
+// ****************************************
+// ***  hardware dependant functions    ***
+// ****************************************
+
+static void drv_CF_goto (int row, int col)
+{
+  char cmd[3]="\021xy"; // set cursor position
+
+  if (row==0 && col==0) {
+    drv_generic_serial_write("\001", 1); // cursor home
+  } else {
+    cmd[1]=(char)col;
+    cmd[2]=(char)row;
+    drv_generic_serial_write(cmd, 3);
+  }
+}
+
+
+static void drv_CF_define_char (int ascii, char *buffer)
+{
+  char cmd[2]="\031n"; // set custom char bitmap
+
+  cmd[1]=(char)ascii;
+  drv_generic_serial_write (cmd, 2);
+  drv_generic_serial_write (buffer, 8);
+}
+
+
+static int drv_CF_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;
+  }
+  
+  // initialize global variables
+  DROWS    = Models[Model].rows;
+  DCOLS    = Models[Model].cols;
+  GPOS     = Models[Model].gpos;
+  PROTOCOL = Models[Model].protocol;
+
+  // open serial port
+  if (drv_generic_serial_open(section, Name)<0) return -1;
+
+  // MR: why such a large delay?
+  usleep(350*1000);
+
+  drv_generic_serial_write ("\014", 1);  // Form Feed (Clear Display)
+  drv_generic_serial_write ("\004", 1);  // hide cursor
+  drv_generic_serial_write ("\024", 1);  // scroll off
+  drv_generic_serial_write ("\030", 1);  // wrap off
+
+  return 0;
+}
+
+
+// ****************************************
+// ***            plugins               ***
+// ****************************************
+
+
+static void plugin_contrast (RESULT *result, RESULT *arg1)
+{
+  char buffer[3];
+  double contrast;
+  
+  contrast=R2N(arg1);
+  if (contrast<0  ) contrast=0;
+  if (contrast>100) contrast=100;
+
+  snprintf (buffer, 3, "\017%c", (int)contrast);
+  drv_generic_serial_write (buffer, 2);
+  
+  SetResult(&result, R_NUMBER, &contrast); 
+}
+
+
+static void plugin_backlight (RESULT *result, RESULT *arg1)
+{
+  char buffer[3];
+  double backlight;
+
+  backlight=R2N(arg1);
+  if (backlight<0  ) backlight=0;
+  if (backlight>100) backlight=100;
+
+  snprintf (buffer, 4, "\016%c", (int)backlight);
+  drv_generic_serial_write (buffer, 3);
+
+  SetResult(&result, R_NUMBER, &backlight); 
+}
+
+// Fixme: other plugins for Fans, Temmperature sensors, ...
+
+
+// ****************************************
+// ***        widget callbacks          ***
+// ****************************************
+
+
+int drv_CF_draw_text (WIDGET *W)
+{
+  return drv_generic_text_draw_text(W, 4, drv_CF_goto, drv_generic_serial_write);
+}
+
+
+int drv_CF_draw_bar (WIDGET *W)
+{
+  return drv_generic_text_draw_bar(W, 4, drv_CF_define_char, drv_CF_goto, drv_generic_serial_write);
+}
+
+
+// ****************************************
+// ***        exported functions        ***
+// ****************************************
+
+
+// list models
+int drv_CF_list (void)
+{
+  int i;
+  
+  for (i=0; Models[i].type!=0xff; i++) {
+    printf ("%s ", Models[i].name);
+  }
+  return 0;
+}
+
+
+// initialize driver & display
+int drv_CF_init (char *section)
+{
+  WIDGET_CLASS wc;
+  int ret;  
+  
+  XRES=5;
+  YRES=8;
+  CHARS=8;
+  
+  // start display
+  if ((ret=drv_CF_start (section))!=0)
+    return ret;
+  
+  // initialize generic text driver
+  if ((ret=drv_generic_text_init(Name))!=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_CF_draw_text;
+  widget_register(&wc);
+  
+  // register bar widget
+  wc=Widget_Bar;
+  wc.draw=drv_CF_draw_bar;
+  widget_register(&wc);
+  
+  // register plugins
+  AddFunction ("contrast",  1, plugin_contrast);
+  AddFunction ("backlight", 1, plugin_backlight);
+  
+  return 0;
+}
+
+
+// close driver & display
+int drv_CF_quit (void) {
+
+  info("%s: shutting down.", Name);
+  drv_generic_serial_close();
+  drv_generic_text_quit();
+  
+  return (0);
+}
+
+
+DRIVER drv_Crystalfontz = {
+  name: Name,
+  list: drv_CF_list,
+  init: drv_CF_init,
+  quit: drv_CF_quit, 
+};
+