code: def get_raw_data(self):
          
          # Read each color register.
          r = self._readU16LE(TCS34725_RDATAL)
          g = self._readU16LE(TCS34725_GDATAL)
          b = self._readU16LE(TCS34725_BDATAL)
          c = self._readU16LE(TCS34725_CDATAL)
          # Delay for the integration time to allow for next reading immediately.
          time.sleep(INTEGRATION_TIME_DELAY[self._integration_time])
          return (r, g, b, c)
docs: Reads the raw red, green, blue and clear channel values. Will return
          a 4-tuple with the red, green, blue, clear color values (unsigned 16-bit
          numbers).