Just a quick update:
The project is called homex and can be found at GitHub - kevinschweikert/homex: A bridge between Elixir and Home Assistant · GitHub .
There is a nerves example project at GitHub - kevinschweikert/Homex-Nerves-Example: An example project using Homex in Nerves · GitHub
I’m currenlty waiting on a new Hex release of the emqtt library which i am using as the MQTT client.
Some sample code:
defmodule HomexDemo.TemperatureSensor do
@moduledoc """
A Homex.Entity for the BME680 sensors temperature values
"""
use Homex.Entity.Sensor,
name: "bme680 temp",
device_class: "temperature",
unit_of_measurement: "°C"
def handle_timer(entity) do
{:ok, measurements} = BMP280.measure(BME680)
entity |> set_value(Float.round(measurements.temperature_c, 2))
end
end
defmodule HomexDemo.Relay do
@moduledoc """
A Homex.Entity for a relay.
Uses `put_private/3` and `get_private/2` to keep the i2c bus handle in state and reference it
"""
use Homex.Entity.Switch, name: "quiick_relay"
def handle_init(entity) do
{:ok, bus} = Circuits.I2C.open("i2c-1")
entity |> put_private(:bus, bus) |> set_off()
end
def handle_on(entity) do
bus = entity |> get_private(:bus)
Circuits.I2C.write!(bus, 0x18, <<0x01>>)
entity
end
def handle_off(entity) do
bus = entity |> get_private(:bus)
Circuits.I2C.write!(bus, 0x18, <<0x00>>)
entity
end
end
and some pictures
i will write an announcement post when the hex version is published. But in the meantime feel free to play around with it and give feedback!
