code: def _write_ctrl_meas(self):
          
          self._write_register_byte(_BME280_REGISTER_CTRL_HUM, self.overscan_humidity)
          self._write_register_byte(_BME280_REGISTER_CTRL_MEAS, self._ctrl_meas)
docs: Write the values to the ctrl_meas and ctrl_hum registers in the device
          ctrl_meas sets the pressure and temperature data acquistion options
          ctrl_hum sets the humidty oversampling and must be written to first