From 015d0594b01c42a43be446e3ef2311e5ede845a1 Mon Sep 17 00:00:00 2001
From: Robert F-C <rfairliecuninghame@yahoo.com>
Date: Sun, 12 May 2013 07:51:28 +1000
Subject: [PATCH] Optimize menu selection for Viki rotary encoder.
The Viki LCD rotary encoder uses a different number of steps per
rotation. This fixes the seeming "missed" steps when selecting a menu.
---
Marlin/ultralcd.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index 2dae90a5d4..72404da032 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -76,7 +76,11 @@ static void menu_action_setting_edit_callback_float51(const char* pstr, float* p
static void menu_action_setting_edit_callback_float52(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned long* ptr, unsigned long minValue, unsigned long maxValue, menuFunc_t callbackFunc);
-#define ENCODER_STEPS_PER_MENU_ITEM 5
+#if !defined(LCD_I2C_VIKI)
+ #define ENCODER_STEPS_PER_MENU_ITEM 5
+#else
+ #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
+#endif
/* Helper macros for menus */
#define START_MENU() do { \
--
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