text: import esphome.codegen as cg
  import esphome.config_validation as cv
  from esphome.components import sensor, esp32_ble_tracker
  from esphome.const import CONF_BATTERY_LEVEL, CONF_HUMIDITY, CONF_MAC_ADDRESS, CONF_TEMPERATURE, \
      UNIT_CELSIUS, ICON_THERMOMETER, UNIT_PERCENT, ICON_WATER_PERCENT, ICON_BATTERY, CONF_ID
  
  DEPENDENCIES = ['esp32_ble_tracker']
  AUTO_LOAD = ['xiaomi_ble']
  
  xiaomi_mijia_ns = cg.esphome_ns.namespace('xiaomi_mijia')
  XiaomiMijia = xiaomi_mijia_ns.class_('XiaomiMijia', esp32_ble_tracker.ESPBTDeviceListener,
                                       cg.Component)
  
  CONFIG_SCHEMA = cv.Schema({
      cv.GenerateID(): cv.declare_id(XiaomiMijia),
      cv.Required(CONF_MAC_ADDRESS): cv.mac_address,
      cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(UNIT_CELSIUS, ICON_THERMOMETER, 1),
      cv.Optional(CONF_HUMIDITY): sensor.sensor_schema(UNIT_PERCENT, ICON_WATER_PERCENT, 1),
      cv.Optional(CONF_BATTERY_LEVEL): sensor.sensor_schema(UNIT_PERCENT, ICON_BATTERY, 0),
  }).extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA).extend(cv.COMPONENT_SCHEMA)
  
  
  def to_code(config):
      var = cg.new_Pvariable(config[CONF_ID])
      yield cg.register_component(var, config)
      yield esp32_ble_tracker.register_ble_device(var, config)
  
      cg.add(var.set_address(config[CONF_MAC_ADDRESS].as_hex))
  
      if CONF_TEMPERATURE in config:
          sens = yield sensor.new_sensor(config[CONF_TEMPERATURE])
          cg.add(var.set_temperature(sens))
      if CONF_HUMIDITY in config:
          sens = yield sensor.new_sensor(config[CONF_HUMIDITY])
          cg.add(var.set_humidity(sens))
      if CONF_BATTERY_LEVEL in config:
          sens = yield sensor.new_sensor(config[CONF_BATTERY_LEVEL])
          cg.add(var.set_battery_level(sens))
  