Keep measurements in a loop until we get a valid data point

platypush/plugins/gpio/sensor/motion/pwm3901.py

@@ -94,12 +94,12 @@ class GpioSensorMotionPwm3901Plugin(GpioSensorPlugin):
 
         sensor = self._get_sensor()
 
+        while True:
             try:
                 x, y = sensor.get_motion()
+                break
             except RuntimeError as e:
-            self.logger.warning('Unable to retrieve sensor data: {}'.format(e))
-            self._sensor = None
-            return {}, str(e)
+                time.sleep(0.01)
 
         secs = int(time.time())
         if (x, y) != (self.x, self.y):