The Homie convention defines a standardized way of how IoT devices and services announce themselves and their data on the MQTT broker.
This library is MQTT implementation agnostic: it only generates and manages topics and values, not actually sending them through the wire.
See an example on how to define a Homie device:
device := homie.NewDevice("my-sensor", "MQTT ESP8266 agent")
device.
AddNode("bme280", "BME280 via ESP8266EX", "bme280").
AddProperty("temperature", "Temperature", homie.TypeFloat).SetUnit("°C").Node().
AddProperty("pressure", "Pressure", homie.TypeFloat).SetUnit("hPa").Node().
AddProperty("humidity", "Humidity", homie.TypeFloat).SetUnit("%")Send the Homie attributes and or values to the MQTT client:
// all homie attributes
for _, attribute := range device.GetHomieAttributes() {
publish(attribute.Topic, attribute.Value)
}
// all property values
for _, attribute := range device.GetValues() {
if attribute.Value != "" {
publish(attribute.Topic, attribute.Value)
}
}Your publish function can use the MQTT client of your choice.
You can set a callback for sending property values for you when you set them:
func onSet(topic, value string, dataType homie.PropertyType) {
if value == "<nil>" {
value = ""
}
if value == "" && dataType != homie.TypeString {
// don't send a blank string on anything else than a string data type
return
}
publish(topic, value)
}
// either install a global callback on the device...
device.OnSet(onSet)
// ...or install the callback on this property only
device.Node("bmp280").Property("temperature").OnSet(onSet)
// new values will be published for you
device.Node("bme280").Property("temperature").Set(20.0)See Specifications
device := NewDevice("deviceID", "deviceName")
device.AddExtension(NewLegacyFirmware("C0:FF:EE:01", "192.168.26.5", "awesome-firmware", "version"))See Specifications
stats := NewLegacyStats()
NewDevice("deviceID", "deviceName").
AddExtension(stats).
OnSet(onSet)
stats.
SetInterval(60).
SetUptime(0)See the example
See go doc
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent