Merge pull request #112 from FarmBot/scaling_overflow_bug_fix

fix encoder scaling overflow bug

src/StepperControlEncoder.cpp

@@ -106,9 +106,11 @@ long StepperControlEncoder::currentPosition()
   else
   {
     #if defined(FARMDUINO_V14)
-      return position * scalingFactor / 40000 * encoderInvert;
+      floatScalingFactor = scalingFactor / 40000.0;
+      return position * floatScalingFactor * encoderInvert;
     #endif
-    return position * scalingFactor / 10000 * encoderInvert;
+    floatScalingFactor = scalingFactor / 10000.0;
+    return position * floatScalingFactor * encoderInvert;
   }
 }
 

src/StepperControlEncoder.h

@@ -61,6 +61,7 @@ private:
   // encoder
   long position;
   long scalingFactor;
+  float floatScalingFactor;
   int encoderType;
   int encoderInvert;