Unallocated framebuffer fix.

server/drivers/CFontz.c

@@ -175,6 +175,12 @@ CFontz_init (lcd_logical_driver * driver, char *args)
 	// Do it...
 	tcsetattr (fd, TCSANOW, &portset);
 
+	// Make sure the frame buffer is there...
+	if (!CFontz->framebuf)
+		CFontz->framebuf = (unsigned char *)
+			malloc (CFontz->wid * CFontz->hgt);
+	memset (CFontz->framebuf, ' ', CFontz->wid * CFontz->hgt);
+
 	// Set display-specific stuff..
 	if (reboot) {
 		CFontz_reboot ();

server/drivers/MtxOrb.c

@@ -387,7 +387,6 @@ MtxOrb_init (lcd_logical_driver * driver, char *args)
 			malloc (MtxOrb->wid * MtxOrb->hgt);
 	memset (MtxOrb->framebuf, ' ', MtxOrb->wid * MtxOrb->hgt);
 
-
         // Allocate and clear the buffer for incremental updates
 	lcd_contents = (unsigned char *) malloc (MtxOrb->wid * MtxOrb->hgt);
 	if (!lcd_contents) { return -1; }

server/drivers/lb216.c

@@ -185,6 +185,12 @@ int LB216_init(lcd_logical_driver *driver, char *args)
    tcsetattr(fd, TCSANOW, &portset);
 
 
+   // Make sure the frame buffer is there...
+   if (!LB216->framebuf)
+      LB216->framebuf = (unsigned char *)
+      malloc (LB216->wid * LB216->hgt);
+   memset (LB216->framebuf, ' ', LB216->wid * LB216->hgt);
+
    // Set display-specific stuff..
    if(reboot)
    {
@@ -268,8 +274,14 @@ void LB216_chr(int x, int y, char c)
 
   //if(c < 32  &&  c >= 0) c += 128;
 //  LB216->framebuf[(y*LB216->wid) + x] = c;
-	char chr[1];
-	snprintf (chr, sizeof(chr), "%c", c);
+
+//	char chr[1];
+//	snprintf (chr, sizeof(chr), "%c", c);
+// Above two lines are incorrect (Joris)
+
+	char chr[2];
+	chr[0] = c;
+	chr[1] = 0;
 	LB216_string (x, y, chr);
 }
 

server/drivers/text.c

@@ -38,6 +38,15 @@ text_init (lcd_logical_driver * driver, char *args)
 {
 	text = driver;
 
+	// Make sure the frame buffer is there...
+	if (!text->framebuf)
+		text->framebuf = (unsigned char *)
+			malloc (text->wid * text->hgt);
+	memset (text->framebuf, ' ', text->wid * text->hgt);
+
+
+	// Set the functions the driver supports
+
 	text->wid = LCD_DEFAULT_WIDTH;
 	text->hgt = LCD_DEFAULT_HEIGHT;
 	text->cellwid = LCD_DEFAULT_CELL_WIDTH;