From 67ab2d018e5d012e7d3867f190873a1437cee58d Mon Sep 17 00:00:00 2001
From: Tamas Szabo <sza2@users.noreply.github.com>
Date: Sat, 21 Feb 2015 17:05:16 +0100
Subject: [PATCH] Update ds18b20.lua

---
 lua_modules/ds18b20/ds18b20.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lua_modules/ds18b20/ds18b20.lua b/lua_modules/ds18b20/ds18b20.lua
index 32c0f4c0..138c10da 100644
--- a/lua_modules/ds18b20/ds18b20.lua
+++ b/lua_modules/ds18b20/ds18b20.lua
@@ -99,7 +99,7 @@ function readNumber(addr, unit)
       if (crc == data:byte(9)) then
         t = (data:byte(1) + data:byte(2) * 256)
         if (t > 32767) then
-          t = -(65536 - t)
+          t = t - 65536
         end
         if(unit == nil or unit == C) then
           t = t * 625