From cfb9af052eeb9a4b42f8134f706bee4988179a4f Mon Sep 17 00:00:00 2001
From: reinelt <>
Date: Wed, 12 Nov 2003 05:42:35 +0000
Subject: [lcd4linux @ 2003-11-12 05:42:35 by reinelt] small changes to the
16x4 handling
---
HD44780.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/HD44780.c b/HD44780.c
index 931e492..23b8c9b 100644
--- a/HD44780.c
+++ b/HD44780.c
@@ -1,4 +1,4 @@
-/* $Id: HD44780.c,v 1.46 2003/10/08 06:48:47 nicowallmeier Exp $
+/* $Id: HD44780.c,v 1.47 2003/11/12 05:42:35 reinelt Exp $
*
* driver for display modules based on the HD44780 chip
*
@@ -29,6 +29,9 @@
*
*
* $Log: HD44780.c,v $
+ * Revision 1.47 2003/11/12 05:42:35 reinelt
+ * small changes to the 16x4 handling
+ *
* Revision 1.46 2003/10/08 06:48:47 nicowallmeier
* special handling for 16x4 displays
*
@@ -565,6 +568,7 @@ void HD_goto (int row, int col)
{
int pos;
+ // handle multiple displays/controllers
if (Controllers>1 && row>=Lcd.rows/2) {
row -= Lcd.rows/2;
Controller = 2;
@@ -573,13 +577,14 @@ void HD_goto (int row, int col)
}
// 16x1 Displays are organized as 8x2 :-(
- if (Lcd.rows==1 && Lcd.cols==16 && col>7) {
+ if (Lcd.cols==16 && Lcd.rows==1 && col>7) {
row++;
col-=8;
}
- if (Lcd.rows==4 && Lcd.cols==16) {
- pos=(row%2)*64+(row/2)*16+col;
+ // 16x4 Displays use a slightly different layout
+ if (Lcd.cols==16 && Lcd.rows==4) {
+ pos=(row%2)*64+(row/2)*16+col;
} else {
pos=(row%2)*64+(row/2)*20+col;
}
--
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