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Add example of MQTT device trigger (#18197)

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Erik Montnemery 2021-06-23 16:01:27 +02:00 committed by GitHub
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source/_integrations/device_trigger.mqtt.markdown
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@ -15,7 +15,7 @@ An MQTT device trigger is a better option than a [binary sensor](/integrations/b
## Configuration
MQTT device triggers are only supported through [MQTT discovery](/docs/mqtt/discovery/), manual setup through `configuration.yaml` is not supported.
The discovery topic needs to be: `<discovery_prefix>/device_automation/[<node_id>/]<object_id>/config`.
The discovery topic needs to be: `<discovery_prefix>/device_automation/[<node_id>/]<object_id>/config`. Note that only one trigger may be defined per unique discovery topic. Also note that the combination of `type` and `subtype` should be unique for a device.
{% configuration %}
automation_type:
@ -81,3 +81,26 @@ device:
required: false
type: string
{% endconfiguration %}
### Example
This shows a complete example of defining a remote control type device with two triggers: "left arrow click" and "right arrow click".
Note that it is not necessary to provide the full device information in each message, but the identifying information, `identifier` in the example, must be the same.
#### Left arrow click configuration:
- Discovery topic: `homeassistant/device_automation/0x90fd9ffffedf1266/action_arrow_left_click/config`
- Discovery payload:
```json
{"automation_type":"trigger","type":"action","subtype":"arrow_left_click","payload":"arrow_left_click","topic":"zigbee2mqtt/0x90fd9ffffedf1266/action","device":{"identifiers":["zigbee2mqtt_0x90fd9ffffedf1266"],"name":"0x90fd9ffffedf1266","sw_version":"Zigbee2mqtt 1.14.0","model":"TRADFRI remote control (E1524/E1810)","manufacturer":"IKEA"}}
```
- Trigger topic: `zigbee2mqtt/0x90fd9ffffedf1266/action`
- Trigger payload: `arrow_left_click`
#### Right arrow click configuration:
- Discovery topic: `homeassistant/device_automation/0x90fd9ffffedf1266/action_arrow_right_click/config`
- Discovery payload:
```json
{"automation_type":"trigger","type":"action","subtype":"arrow_right_click","payload":"arrow_right_click","topic":"zigbee2mqtt/0x90fd9ffffedf1266/action","device":{"identifiers":["zigbee2mqtt_0x90fd9ffffedf1266"]}}
```
- Trigger topic: `zigbee2mqtt/0x90fd9ffffedf1266/action`
- Trigger payload: `arrow_right_click`