From 37880ee9ec6225e8e6eea44782f4eeff708e1d17 Mon Sep 17 00:00:00 2001
From: "bsongis@gmail.com"
 <bsongis@gmail.com@8db61ce9-5e8f-94c8-fa6b-1d1c8bcca7d0>
Date: Mon, 6 May 2013 05:28:38 +0000
Subject: [PATCH] Issue 25 fixed

---
 src/menu_model.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/menu_model.cpp b/src/menu_model.cpp
index f1ae3d90b..2976537f2 100644
--- a/src/menu_model.cpp
+++ b/src/menu_model.cpp
@@ -2066,7 +2066,7 @@ void DrawFunction(FnFuncP fn, uint8_t offset=0)
   uint8_t prev_yv = 255;
 
   for (int8_t xv=-WCHART; xv<=WCHART; xv++) {
-    uint8_t yv = (LCD_H-1) - (((int16_t)RESX + fn(xv * (RESX/WCHART))) / 2 * (LCD_H-1) / RESX);
+    uint8_t yv = (LCD_H-1) - (((uint16_t)RESX + fn(xv * (RESX/WCHART))) / 2 * (LCD_H-1) / RESX);
     if (prev_yv != 255) {
       if (abs((int8_t)yv-prev_yv) <= 1) {
         lcd_plot(X0+xv-offset-1, prev_yv, FORCE);