@titof2375: Yes it's possible. You can use any homeassistant Sensors for temperature and the thermostat to regulate the temperature as an add-on in esphome. Here is my working config with home assistant sensor reading "sensor.meter_og_temperature":
(Sorry for the formatting of the comments all '#' lead to bold)

`substitutions:
esp32_name: "esphome-klimaanlage"
device_description: "M5-Atom Stack mit RS485 Interface"

esphome:
name: ${esp32_name}
comment: ${device_description}

external_components:

• source: github://lanwin/esphome_samsung_ac@main

esp32:
board: m5stack-atom
framework:
type: esp-idf
version: recommended

uart:
tx_pin: GPIO19
rx_pin: GPIO22
baud_rate: 9600
parity: EVEN

Enable logging

logger:
level: DEBUG

Enable Home Assistant API

api:
encryption:
key: !secret ha_key
reboot_timeout: 60s

ota:
password: !secret ota_key
safe_mode: true
num_attempts: 1

wifi:
ssid: !secret iot_ssid
password: !secret iot_password
domain: .iot.local
reboot_timeout: 5min
ap:
ssid: "Klimaanlage Fallback Hotspot"
password: !secret wifi_ap_password

esp32_ble_tracker:
scan_parameters:
interval: 1100ms
window: 1100ms
active: true

bluetooth_proxy:
active: true

sensor:

• platform: homeassistant
  id: TemperaturOG
  accuracy_decimals: 1
  entity_id: sensor.meter_og_temperature

• platform: homeassistant
  id: SollwertOG2
  accuracy_decimals: 1
  entity_id: input_number.heizung_sollwert_og2

Home Assistant switches usw.

switch:

• platform: safe_mode
  internal: true
  name: use_safe_mode

button:

• platform: restart
  name: Restart $esp32_name

samsung_ac:
debug_log_messages: false # logs all messages - only for debugging
debug_log_messages_raw: false # logs the raw message bytes from all messages - only for debugging

devices:
- address: "20.00.00" # for non NASA it sould be like "c4"
# Each property below are optional - choose what you want to use.

  # You could use the ESPHome/Homeassist climate control
  climate:
    name: "ESP32 mit RS485 Verbindung zur Klimaanlage"
    id: klima
    visual:
      min_temperature: 16 °C
      max_temperature: 26 °C
      temperature_step: 0.1 °C
  # And/or use seperate controls/sensors
  room_temperature:
    name: Klima_Ist_Temperatur
  target_temperature:
    name: Klima_Soll_Temperatur
  power:
    name: Klima_power
  mode:
    name: Klima_mode

  # Only supported on NASA devices
  room_humidity:
    name: Klima_Luftfeuchtigkeit

climate: #https://esphome.io/components/climate/climate_ir.html?highlight=ir

Example climate controller with presets

https://esphome.io/components/climate/thermostat.html

• platform: thermostat
  visual:
  min_temperature: 16 °C
  max_temperature: 26 °C
  temperature_step: 0.1 °C
  name: "Thermostat Regler auf ESP32 für Klimaanlage"
  sensor: TemperaturOG
  min_heating_off_time: 600s
  min_heating_run_time: 1h
  min_cooling_off_time: 600s
  min_cooling_run_time: 1h
  min_idle_time: 180s
  heat_deadband: 0.2 °C
  heat_action:
  • climate.control:
    id: klima
    mode: HEAT
    fan_mode: AUTO
    swing_mode: 'Off'
    target_temperature: 26°C
    #target_temperature: !lambda |-
    #return id(SollwertOG2).state;
    #ESP_LOGI("main", "Value of my sensor: %f", id(SollwertOG2).state);
    cool_action:
  • climate.control:
    id: klima
    mode: COOL
    fan_mode: AUTO
    swing_mode: 'Off'
    target_temperature: 20°C
    idle_action:
  • climate.control:
    id: klima
    mode: 'OFF'
    target_temperature: 16°C`

from esphome_samsung_ac.

Are these the sensors that you declare for the Samsung AC air conditioning driver?

from esphome_samsung_ac.

Yes, the first one is a temperature sensor, the second one is meant to be the setpoint value, but not used yet.

from esphome_samsung_ac.

so the samsung air conditioning takes the temperature from the sensor.meter_og_temperature probe

from esphome_samsung_ac.

not directly - the thermostat takes the temperature and regulates the samsung hvac. (connected by the id: klima) At least the behavior is the same.

from esphome_samsung_ac.