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Merge pull request #105 from wtadler/develop

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Edit README notes on baud rate and external temperature sensor
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Geoff Davis 2023-10-13 13:32:26 -07:00 committed by GitHub
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@ -365,7 +365,9 @@ climate:
`UART0`, `UART1`, and `UART2` are all valid choices. Default: `UART0` `UART0`, `UART1`, and `UART2` are all valid choices. Default: `UART0`
* `baud_rate` (_Optional_): Serial BAUD rate used to communicate with the * `baud_rate` (_Optional_): Serial BAUD rate used to communicate with the
HeatPump. Most systems use the default value of `4800` baud, but some use HeatPump. Most systems use the default value of `4800` baud, but some use
`2400` or `9600`. Some ESP32 boards will require the baud_rate setting if `2400` or `9600`. Check [here](https://github.com/SwiCago/HeatPump/issues/13)
to find discussion of whether your particular model requires a non-default baud rate.
Some ESP32 boards will require the baud_rate setting if
hardware_uart is specified. Default: `4800`. hardware_uart is specified. Default: `4800`.
* `rx_pin` (_Optional_): pin number to use as RX for the specified hardware * `rx_pin` (_Optional_): pin number to use as RX for the specified hardware
UART (ESP32 only - ESP8266 hardware UART's pins aren't configurable). UART (ESP32 only - ESP8266 hardware UART's pins aren't configurable).
@ -409,9 +411,11 @@ climate:
It is possible to use an external temperature sensor to tell the heat pump what It is possible to use an external temperature sensor to tell the heat pump what
the room temperature is, rather than relying on its internal temperature the room temperature is, rather than relying on its internal temperature
sensor. You can do this by calling `set_remote_temperature(float temp)` on the sensor. This is helpful if you want to make sure that a particular room, or part
`mitsubishi_heatpump` object in a lambda. Note that you can call of the room, reaches the desired temperature—rather than just the area near the
`set_remote_temperature(0)` to switch back to the internal temperature sensor. heat pump or the thermostat. You can do this by calling `set_remote_temperature(float temp)`
on the `mitsubishi_heatpump` object in a lambda. (If needed, you can call
`set_remote_temperature(0)` to switch back to the internal temperature sensor.)
There are several ways you could make use of this functionality. One is to use There are several ways you could make use of this functionality. One is to use
a sensor automation: a sensor automation:
@ -423,7 +427,7 @@ climate:
id: hp id: hp
sensor: sensor:
# You could use a Bluetooth temperature sensor # You could use a Bluetooth temperature sensor as the source...
- platform: atc_mithermometer - platform: atc_mithermometer
mac_address: "XX:XX:XX:XX:XX:XX" mac_address: "XX:XX:XX:XX:XX:XX"
temperature: temperature:
@ -432,7 +436,7 @@ sensor:
then: then:
- lambda: 'id(hp).set_remote_temperature(x);' - lambda: 'id(hp).set_remote_temperature(x);'
# Or you could use a HomeAssistant sensor # ...or you could use a Home Assistant sensor as the source
- platform: homeassistant - platform: homeassistant
name: "Temperature Sensor From Home Assistant" name: "Temperature Sensor From Home Assistant"
entity_id: sensor.temperature_sensor entity_id: sensor.temperature_sensor
@ -440,8 +444,15 @@ sensor:
then: then:
- lambda: 'id(hp).set_remote_temperature(x);' - lambda: 'id(hp).set_remote_temperature(x);'
``` ```
One issue that you might have here is that, after some amount of time with no update from the
external temperature sensor, the heat pump will revert back to its internal temperature.
You can prevent this by [adding a `heartbeat` filter](https://github.com/geoffdavis/esphome-mitsubishiheatpump/issues/31#issuecomment-1207115352)
to the sensor, which will keep reminding the heat pump of the external sensor value.
Alternatively you could define a Also, if your external sensor is in Fahrenheit, you will have to [convert the value to Celsius](https://github.com/geoffdavis/esphome-mitsubishiheatpump/issues/31#issuecomment-1207115352).
Alternatively, you could define a
[service](https://www.esphome.io/components/api.html#user-defined-services) [service](https://www.esphome.io/components/api.html#user-defined-services)
that Home Assistant can call: that Home Assistant can call: