Added get_distance() to ColourDistanceSensor (#157)

* Add get_distance() to example code

* Only return first element of array in get_distance()

* Use mode 1 for distance

Author: highflying

buildhat/colordistance.py

@@ -115,6 +115,16 @@ def get_reflected_light(self):
             readings.append(self.get()[0])
         return int(sum(readings) / len(readings))
 
+    def get_distance(self):
+        """Return the distance
+
+        :return: Distance
+        :rtype: int
+        """
+        self.mode(1)
+        distance = self.get()[0]
+        return distance
+
     def _clamp(self, val, small, large):
         return max(small, min(val, large))
 

docs/buildhat/colordistance.py

@@ -4,6 +4,7 @@
 
 color = ColorDistanceSensor('C')
 
+print("Distance", color.get_distance())
 print("RGBI", color.get_color_rgb())
 print("Ambient", color.get_ambient_light())
 print("Reflected", color.get_reflected_light())