Configuration

Configuration is performed via a single TOML file, when you start the program you must pass it the name of your configuration file eg.

./daikin2mqtt -config /home/ha_user/daikin2mqtt.toml

Here is a sample configuration showing all available options...

# All configuration options
# All entries are required unless otherwise specified

[mqtt]
base_topic = "daikin2mqtt"          # MQTT base topic
broker = "localhost"                # MQTT broker
port = 1883                         # MQTT port
username = ""                       # MQTT broker user (use "" for none)
password = ""                       # MQTT broker password (use "" for none)

[daikin]
update_period = 60                  # Seconds pause (s) between regular updates from inverters

[[inverter]]
  ip_addr = "192.168.1.50"          # The (static) IP address of the unit  
  friendly_name = "Steve_Office"    # Must be unique. Will form part of the MQTT topic
  
[[inverter]]
  ip_addr = "192.168.1.51"          # Another unit...            
  friendly_name = "Spare_Bedroom"  

Replace the inverter details with your own and add an [[inverter]] section for every unit you want to monitor/control.

A file similar to the above named configuration.toml may be found in the examples directory.

MQTT Configuration

Item	Description
base_topic	defines the root topic for all messages concerned with this instance. For consistency, throughout this wiki, we assume that you have set it to daikin2mqtt
broker	the hostname or IP address of your MQTT Broker
port	the port for connections to the your MQTT Broker, use 1883 if you haven't changed it in the MQTT broker configuration
username	either "" for no username, or the MQTT username you wish to connect as
password	either "" for no password, or the MQTT password you wish to connect with

Daikin (General) Configuration

Item	Suggested Range	Description
update_period	30 - 600	How many seconds to wait between actively monitoring all configured inverters. Note that this does not influence the 'reactivity' of any MQTT front-end to commands as all set commands are automatically followed by an implicit get, rather, it controls how often a front-end is updated without user intervention.

Inverter Configuration

Item	Description
ip_addr	The (static) IP address of an inverter (actually, the adaptor connected to an inverter).
friendly_name	A unique identifier from the user's perspective. It is used as the second part of the MQTT topic for all messages to identify a particular inverter, i.e. the topic will be daikin2mqtt/<friendly_name>/.... Avoid special characters and spaces (or test them carefully).

You must specify both a unique friendly_name for each inverter and an ip_addr.

Experience has shown that there are considerable benefits to assigning static IP address to your inverters. (Although it is possible to 'discover' units via UDP - this is not reliable.)

It is strongly suggested that, where possible, you use static IP addresses for the inverters - configured via your router or DHCP server.

Daikin2MQTT no longer supports UDP discovery - which seems to be a weak point for many Daikin wifi adaptors.