From 9a3f6767095e22223b0d773b76565959be8064a8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Br=C3=A1zio?= <jbrazio@gmail.com>
Date: Thu, 14 Apr 2016 16:20:17 +0100
Subject: [PATCH] Throw an error if ENCODER_PULSES_PER_STEP < -1

---
 Marlin/SanityCheck.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Marlin/SanityCheck.h b/Marlin/SanityCheck.h
index 901da3b59..38aec0e3c 100644
--- a/Marlin/SanityCheck.h
+++ b/Marlin/SanityCheck.h
@@ -290,6 +290,10 @@
   #error ULTIPANEL requires some kind of encoder.
 #endif
 
+#if ENCODER_PULSES_PER_STEP < 0
+  #error ENCODER_PULSES_PER_STEP should not be negative, use REVERSE_MENU_DIRECTION instead
+#endif
+
 /**
  * Delta has limited bed leveling options
  */