From 983d1ff4b5ee09780ac4ecd353ac60a006c2655f Mon Sep 17 00:00:00 2001
From: Pavol Rusnak <stick@gk2.sk>
Date: Mon, 8 Dec 2014 19:32:18 +0100
Subject: [PATCH] use space for non-printable chars such as enter, tab, etc.

---
 oled.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/oled.c b/oled.c
index a62b3c519..2d90105ed 100644
--- a/oled.c
+++ b/oled.c
@@ -193,7 +193,11 @@ void oledDrawChar(int x, int y, char c)
 
 	if ((x >= OLED_WIDTH) || (y >= OLED_HEIGHT)) return;
 
-	if ((c < FONT_START) || (c > FONT_END)) {
+	if (c < FONT_START) {
+		c = ' ';
+	}
+
+	if (c > FONT_END) {
 		c = '_';
 	}