From 3021f7f74332899d1ee5f06d4bd716d7f9794845 Mon Sep 17 00:00:00 2001
From: MagoKimbra <magokimbra@hotmail.com>
Date: Sun, 25 Jan 2015 17:56:14 +0100
Subject: [PATCH] Fix PID_dT

Add PID_dT in temeprature.cpp
---
 Marlin/temperature.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index da5e87637..9889e1fda 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -38,8 +38,15 @@
 
 
 //===========================================================================
-//=============================public variables============================
+//============================= public variables ============================
 //===========================================================================
+
+// Sampling period of the temperature routine
+#ifdef PID_dT
+  #undef PID_dT
+#endif
+#define PID_dT ((OVERSAMPLENR * 12.0)/(F_CPU / 64.0 / 256.0))
+
 int target_temperature[EXTRUDERS] = { 0 };
 int target_temperature_bed = 0;
 int current_temperature_raw[EXTRUDERS] = { 0 };