Add midpoint function to range class

Author: ianfixes

src/CalibratedServo.h

@@ -6,7 +6,8 @@ typedef struct Range {
   unsigned int min;
   unsigned int max;
 
-  unsigned int clamp(unsigned int v) const { return constrain(v, min, max); }
+  inline unsigned int clamp(unsigned int v) const { return constrain(v, min, max); }
+  inline unsigned int midpoint() const { return  (max - min) / 2; }
 } Range;
 
 // a calibrated servo defines its input (signal) and output (position) ranges

src/DashState.h

@@ -32,7 +32,7 @@ const Range oilServoLimit   { 0, 180 };
 
 // define limits for LED strip brightness
 const Range LEDStripBrightnessLimit { 5, 255 };
-const int dimBrightnessLevel = (LEDStripBrightnessLimit.max - LEDStripBrightnessLimit.min) / 2;
+const int dimBrightnessLevel = LEDStripBrightnessLimit.midpoint();
 
 const unsigned int ARDUINO_BOOT_ANIMATION_MS = 2000; // amount of time that we can use to do a bootup sequence
 const unsigned int ARDUINO_SOFT_SHUTDOWN_MS = 3000; // amount of time that we can use to do a soft shutdown