[lcd4linux @ 2004-05-31 16:39:05 by reinelt]

added NULL display driver (for debugging/profiling purposes)
added backlight/contrast initialisation for matrixOrbital
added Backlight initialisation for Cwlinux

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@452 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 192 insertions, 0 deletions

diff --git a/drv_NULL.c b/drv_NULL.c
new file mode 100644
index 0000000..4db7bb0
--- /dev/null
+++ b/drv_NULL.c
@@ -0,0 +1,192 @@
+/* $Id: drv_NULL.c,v 1.1 2004/05/31 16:39:06 reinelt Exp $
+ *
+ * NULL driver (for testing)
+ *
+ * Copyright 2004 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_NULL.c,v $
+ * Revision 1.1  2004/05/31 16:39:06  reinelt
+ *
+ * added NULL display driver (for debugging/profiling purposes)
+ * added backlight/contrast initialisation for matrixOrbital
+ * added Backlight initialisation for Cwlinux
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_NULL
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.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"
+
+
+static char Name[]="NULL";
+
+
+// ****************************************
+// ***  hardware dependant functions    ***
+// ****************************************
+
+static void drv_NULL_write (int row, int col, unsigned char *data, int len)
+{
+  // empty
+}
+
+
+static void drv_NULL_defchar (int ascii, unsigned char *matrix)
+{
+  // empty
+}
+
+
+static int drv_NULL_start (char *section)
+{
+  char *s;
+  
+  s = cfg_get(section, "Size", "20x4");
+  if (s == NULL || *s == '\0') {
+    error ("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
+    free(s);
+    return -1;
+  }
+  if (sscanf(s, "%dx%d", &DCOLS, &DROWS) != 2 || DROWS < 1 || DCOLS < 1) {
+    error ("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source);
+    free(s);
+    return -1;
+  }
+  free (s);
+  
+  return 0;
+}
+
+
+// ****************************************
+// ***            plugins               ***
+// ****************************************
+
+// none at the moment...
+
+
+// ****************************************
+// ***        widget callbacks          ***
+// ****************************************
+
+// using drv_generic_text_draw(W)
+// using drv_generic_text_bar_draw(W)
+
+
+// ****************************************
+// ***        exported functions        ***
+// ****************************************
+
+
+// list models
+int drv_NULL_list (void)
+{
+  printf ("generic");
+  return 0;
+}
+
+
+// initialize driver & display
+int drv_NULL_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 = 0;     // ASCII of first user-defineable char
+  GOTO_COST = 2; // number of bytes a goto command requires
+  
+  // real worker functions
+  drv_generic_text_real_write   = drv_NULL_write;
+  drv_generic_text_real_defchar = drv_NULL_defchar;
+
+  // start display
+  if ((ret = drv_NULL_start (section)) != 0)
+    return ret;
+  
+  // initialize generic text driver
+  if ((ret = drv_generic_text_init(section, Name)) != 0)
+    return ret;
+
+  // initialize generic bar driver
+  if ((ret = drv_generic_text_bar_init(1)) != 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,'*'); // asterisk
+  
+  // register text widget
+  wc = Widget_Text;
+  wc.draw = drv_generic_text_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_NULL_quit (void) {
+
+  info("%s: shutting down.", Name);
+  drv_generic_text_quit();
+  
+  return (0);
+}
+
+
+DRIVER drv_NULL = {
+  name: Name,
+  list: drv_NULL_list,
+  init: drv_NULL_init,
+  quit: drv_NULL_quit, 
+};
+