docs: def update_humidity_temp(self):
          """ This method utilizes the HIH7xxx sensor to read
              humidity and temperature in one call. 
          """
          # Create mask for STATUS (first two bits of 64 bit wide result)
          STATUS = 0b11 << 6
  
          TCA_select(SensorCluster.bus, self.mux_addr, SensorCluster.humidity_chan)
          SensorCluster.bus.write_quick(SensorCluster.humidity_addr)  # Begin conversion
          sleep(.25)
          # wait 100ms to make sure the conversion takes place.
          data = SensorCluster.bus.read_i2c_block_data(SensorCluster.humidity_addr, 0, 4)
          status = (data[0] & STATUS) >> 6
          
          if status == 0 or status == 1:  # will always pass for now.
              humidity = round((((data[0] & 0x3f) << 8) |
                                data[1]) * 100.0 / (2**14 - 2), 3)
              self.humidity = humidity
              self.temp = (round((((data[2] << 6) + ((data[3] & 0xfc) >> 2))
                                 * 165.0 / 16382.0 - 40.0), 3) * 9/5) + 32
              return TCA_select(SensorCluster.bus, self.mux_addr, "off")
          else:
              raise I2CBusError("Unable to retrieve humidity")