From 51eb03583d3ac18091e51ba21b710f8882df74ba Mon Sep 17 00:00:00 2001
From: Nico Tonnhofer <wurstnase.reprap@gmail.com>
Date: Mon, 6 Nov 2017 19:00:56 +0100
Subject: [PATCH] Give a warning for wrong TEMP_EWMA values. float values are
 deprecated. Some users could accidentally set 1.0 to 1

---
 config_wrapper.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/config_wrapper.h b/config_wrapper.h
index 137957b..ecd34ad 100644
--- a/config_wrapper.h
+++ b/config_wrapper.h
@@ -113,3 +113,15 @@
 #if defined __ARMEL__ && defined BANG_BANG
   #undef BANG_BANG
 #endif
+
+/**
+ * TEMP_EWMA changed from float 0.0 - 1.0 to integer 1000
+ * Some people could accidentally change the 1.0 to 1 which will have effect
+ * in very slow temperature readings. Let's force any value <= 1.0 to 1000
+ * and give them a warning.
+*/
+#if TEMP_EWMA < 2
+#undef TEMP_EWMA
+#define TEMP_EWMA 1000
+#warning TEMP_EWMA scaling changed! Take a look in your printer.xxx.h.
+#endif