[lcd4linux @ 2005-04-30 06:02:09 by reinelt]

LCD-Linux display size set up from lcd4linux.conf

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@534 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

diff --git a/drv_LCDLinux.c b/drv_LCDLinux.c
index 503a01d5095d9120326319d2b7f72c7bad581f51..fbd8401fe8b68eb7c3dd71bb6d0b89106ca64299 100644 (file)
--- a/drv_LCDLinux.c
+++ b/drv_LCDLinux.c
@@ -1,4 +1,4 @@
-/* $Id: drv_LCDLinux.c,v 1.5 2005/04/09 07:36:42 reinelt Exp $
+/* $Id: drv_LCDLinux.c,v 1.6 2005/04/30 06:02:09 reinelt Exp $
  *
  * driver for the LCD-Linux HD44780 kernel driver
  * http://lcd-linux.sourceforge.net
@@ -24,6 +24,9 @@
  *
  *
  * $Log: drv_LCDLinux.c,v $
+ * Revision 1.6  2005/04/30 06:02:09  reinelt
+ * LCD-Linux display size set up from lcd4linux.conf
+ *
  * Revision 1.5  2005/04/09 07:36:42  reinelt
  * updated LCD-Linux driver to version 0.8.8
  *
@@ -142,10 +145,23 @@ static void drv_LL_defchar (const int ascii, const unsigned char *matrix)
 }
 
 
-static int drv_LL_start (const int quiet)
+static int drv_LL_start (const char *section, const int quiet)
 {
+  char *s;
+  int rows=-1, cols=-1;
   struct lcd_driver buf;
 
+  /* get size from config file */
+  s=cfg_get(section, "Size", NULL);
+  if (s != NULL || *s != '\0') {
+    if (sscanf(s, "%dx%d",&cols,&rows) != 2 || rows < 1 || cols < 1) {
+      error ("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
+      free (s);
+      return -1;
+    }
+  }
+  free (s);
+
   /* open device */
   lcdlinux_fd = open(Device, O_WRONLY);
   if (lcdlinux_fd == -1) {
@@ -156,11 +172,23 @@ static int drv_LL_start (const int quiet)
   /* get display size */
   memset(&buf, 0, sizeof(buf));
   if (ioctl(lcdlinux_fd, IOCTL_GET_PARAM, &buf) != 0) {
-    error ("%s: ioctl() failed: %s", Name, strerror(errno));
+    error ("%s: ioctl(IOCTL_GET_PARAM) failed: %s", Name, strerror(errno));
     error ("%s: Could not get display geometry!", Name);
     return -1;
   }
-  info("%s: %dx%d display, %d controllers", Name, buf.disp_cols, buf.cntr_rows, buf.num_cntr);
+  info("%s: %dx%d display (%d controllers)", Name, buf.disp_cols, buf.cntr_rows, buf.num_cntr);
+
+  /* overwrite with size from lcd4linux.conf */
+  if ((rows > 0 && rows != buf.cntr_rows) || (cols > 0 && cols != buf.disp_cols)) {
+    buf.cntr_rows = rows;
+    buf.disp_cols = cols;
+    if (ioctl(lcdlinux_fd, IOCTL_SET_PARAM, &buf) != 0) {
+      error ("%s: ioctl(IOCTL_SET_PARAM) failed: %s", Name, strerror(errno));
+      error ("%s: Could not set display geometry!", Name);
+      return -1;
+    }
+    info("%s: size changed to %dx%d", Name, buf.disp_cols, buf.cntr_rows);
+  }
   
   DROWS = buf.cntr_rows;
   DCOLS = buf.disp_cols;
@@ -231,7 +259,7 @@ int drv_LL_init (const char *section, const int quiet)
 
 
   /* start display */
-  if ((ret=drv_LL_start (quiet))!=0)
+  if ((ret=drv_LL_start (section, quiet))!=0)
     return ret;
   
   /* initialize generic text driver */

diff --git a/drv_LCDLinux.h b/drv_LCDLinux.h
index 6bdf1f1f4fbe7689c65d38b448b6415609d63428..2063a04a1ce3e2039bf80b511b7d43da55d3a89f 100644 (file)
--- a/drv_LCDLinux.h
+++ b/drv_LCDLinux.h
@@ -1,6 +1,6 @@
 /* lcd.h
  *
- * $Id: drv_LCDLinux.h,v 1.1 2005/04/09 07:36:42 reinelt Exp $
+ * $Id: drv_LCDLinux.h,v 1.2 2005/04/30 06:02:09 reinelt Exp $
  *
  * LCD driver for HD44780 compatible displays connected to the parallel port.
  * 
@@ -27,7 +27,7 @@
 #ifndef LCD_H
 #define LCD_H
 
-#define LCD_LINUX_VERSION      "0.8.8" /* Version number */
+#define LCD_LINUX_VERSION      "0.8.9-CVS"     /* Version number */
 
 #define LCD_MAJOR              120     /* Major number for this device
                                         * Set this to 0 for dynamic allocation
@@ -55,11 +55,10 @@ struct lcd_driver {
 #define IOCTL_GET_PARAM                _IOR(LCD_MAJOR, 1, struct lcd_driver *)
 
 #define LCD_PROC_ON    0x0001          /* Enable the /proc filesystem support */
-#define LCD_READ_ON    0x0002          /* Enable the read functions */
-#define LCD_ETTY_ON    0x0004          /* Enable the tty support */
-#define LCD_CONSOLE    0x0008          /* Enable the console support */
-#define LCD_4BITS_BUS  0x0010          /* Set the bus length to 4 bits */
-#define LCD_5X10_FONT  0x0020          /* Use 5x10 dots fonts */
+#define LCD_ETTY_ON    0x0002          /* Enable the tty support */
+#define LCD_CONSOLE    0x0004          /* Enable the console support */
+#define LCD_4BITS_BUS  0x0008          /* Set the bus length to 4 bits */
+#define LCD_5X10_FONT  0x0010          /* Use 5x10 dots fonts */
 
 
 

diff --git a/lcd4linux.conf.sample b/lcd4linux.conf.sample
index 57465f17b032600e646f3c67a50ddd1a2571970f..f8fa773635f3a9d9a4d775fb368f6fca357f0212 100644 (file)
--- a/lcd4linux.conf.sample
+++ b/lcd4linux.conf.sample
@@ -8,6 +8,7 @@ Display Trefon {
 
 Display LCD-Linux {
     Driver 'LCD-Linux'
+    Size '20x2'
 }
 
 Display LK204 {
@@ -75,8 +76,9 @@ Display Curses {
 Display HD44780-generic {
     Driver 'HD44780'
     Model 'generic'
-    Port '/dev/parport0'       
+    Port '/dev/parports/0'     
     Size '20x4'
+    asc255bug 1
     Wire {
        RW      'GND'
        RS      'AUTOFD'
@@ -737,7 +739,7 @@ Layout testMySQL {
 }
 
 
-#Display 'LCD-Linux'
+Display 'LCD-Linux'
 #Display 'LK204'
 #Display 'MI240'
 #Display 'CW12232'
@@ -756,7 +758,7 @@ Layout testMySQL {
 #Display 'USBLCD'
 #Display 'BWCT'
 #Display 'Image'
-Display 'Trefon'
+#Display 'Trefon'
 
 #Layout  'Default'
 Layout 'L16x2'