Added posibility to set ENCODER_STEPS_PER_MENU_ITEM in Configuration.h like ENCODER_PULSES_PER_STEP as it depends on it for usability

Marlin/Configuration.h

@@ -435,6 +435,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define SDSUPPORT // Enable SD Card Support in Hardware Console
 //#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
 //#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
+//#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
 //#define ULTIMAKERCONTROLLER //as available from the ultimaker online store.
 //#define ULTIPANEL  //the ultipanel as on thingiverse
 

Marlin/ultralcd.cpp

@@ -90,12 +90,16 @@ static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned l
 #define ENCODER_FEEDRATE_DEADZONE 10
 
 #if !defined(LCD_I2C_VIKI)
+  #ifndef ENCODER_STEPS_PER_MENU_ITEM
     #define ENCODER_STEPS_PER_MENU_ITEM 5
+  #endif
   #ifndef ENCODER_PULSES_PER_STEP
     #define ENCODER_PULSES_PER_STEP 1
   #endif
 #else
+  #ifndef ENCODER_STEPS_PER_MENU_ITEM
     #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
+  #endif
   #ifndef ENCODER_PULSES_PER_STEP
     #define ENCODER_PULSES_PER_STEP 1
   #endif