Adding support for 1-Wire Sensor DS2438 (Smart Battery Monitor)

[timomer]

Component name

1-Wire Bus

Link to component documentation on our website

https://esphome.io/components/one_wire/index.html

Describe the enhancement

Currently, in ESPHome only one 1-Wire sensor DS18B20 (digital thermometer) is supported. would like to expand this to also support DS2438 (Smart Battery Monitor) and expose the Temperature and Humidity value when a Honeywell or Humirel sensor is connected to the DS2438

Use cases

I've had too many DHT22 sensors die on me, im using them for monitoring humidity and temperature and want something more robust as I control my heating and ventilation levels at home based on these readings. Having something on 1 wire would be ideal and simplify my home setup.

1 wire does not have a native humidity sensor, but DS2438 supports temperature and humidity by adding a HIH sensor.

Details of an example sensor here

This is very common and Home Assistant supports reading the DS2438 with different sensors attached, I want that in ESPHome as well as that means I can feed this info back to HA from multiple ESPHome devices

Anything else?

Home Assistant Implementation:
https://www.home-assistant.io/integrations/onewire/
Home Assistant details of users using DS2438 to read humidity and other values:
https://www.home-assistant.io/integrations/onewire/#note_2:~:text=disabled%204.-,For%20hobbyists,%2C,-DS2760
Example discussion in form:
https://community.home-assistant.io/t/3rd-party-one-wire-sensors-ds2438/810351