[mqtt][homeassistant][zigbee2mqtt] State missing in homeassistant

[enboig]

I have a ikea light configured with zigbee2mqtt (https://www.zigbee2mqtt.io/devices/ICPSHC24-30EU-IL-1.html#ikea-icpshc24-30eu-il-1)

I checked mqtt and homeassistant reports only brightness, while exposes reporots also state.

{
  "availability": [
    {
      "topic": "zigbee2mqtt/bridge/state",
      "value_template": "{{ value_json.state }}"
    }
  ],
  "brightness": true,
  "brightness_scale": 254,
  "command_topic": "zigbee2mqtt/cuinaLlumTaulell/set",
  "device": {
    "identifiers": [
      "zigbee2mqtt_0x0c4314fffe0f8ab6"
    ],
    "manufacturer": "IKEA",
    "model": "TRADFRI driver for wireless control (30 watt) (ICPSHC24-30EU-IL-1)",
    "name": "cuinaLlumTaulell",
    "sw_version": "2.3.086",
    "via_device": "zigbee2mqtt_bridge_0x00124b0012c38fda"
  },
  "effect": true,
  "effect_list": [
    "blink",
    "breathe",
    "okay",
    "channel_change",
    "finish_effect",
    "stop_effect"
  ],
  "name": null,
  "object_id": "cuinallumtaulell",
  "origin": {
    "name": "Zigbee2MQTT",
    "sw": "1.36.0",
    "url": "https://www.zigbee2mqtt.io"
  },
  "schema": "json",
  "state_topic": "zigbee2mqtt/cuinaLlumTaulell",
  "unique_id": "0x0c4314fffe0f8ab6_light_zigbee2mqtt"
}

exposes:

  {
    "date_code": "20190401",
    "definition": {
      "description": "TRADFRI driver for wireless control (30 watt)",
      "exposes": [
        {
          "features": [
            {
              "access": 7,
              "description": "On/off state of this light",
              "label": "State",
              "name": "state",
              "property": "state",
              "type": "binary",
              "value_off": "OFF",
              "value_on": "ON",
              "value_toggle": "TOGGLE"
            },
            {
              "access": 7,
              "description": "Brightness of this light",
              "label": "Brightness",
              "name": "brightness",
              "property": "brightness",
              "type": "numeric",
              "value_max": 254,
              "value_min": 0
            }
          ],
          "type": "light"
        },
        {
          "access": 2,
          "description": "Triggers an effect on the light (e.g. make light blink for a few seconds)",
          "label": "Effect",
          "name": "effect",
          "property": "effect",
          "type": "enum",
          "values": [
            "blink",
            "breathe",
            "okay",
            "channel_change",
            "finish_effect",
            "stop_effect"
          ]
        },
        {
          "access": 7,
          "category": "config",
          "description": "Controls the behavior when the device is powered on after power loss. If you get an `UNSUPPORTED_ATTRIBUTE` error, the device does not support it.",
          "label": "Power-on behavior",
          "name": "power_on_behavior",
          "property": "power_on_behavior",
          "type": "enum",
          "values": [
            "off",
            "on",
            "toggle",
            "previous"
          ]
        },
        {
          "access": 1,
          "category": "diagnostic",
          "description": "Link quality (signal strength)",
          "label": "Linkquality",
          "name": "linkquality",
          "property": "linkquality",
          "type": "numeric",
          "unit": "lqi",
          "value_max": 255,
          "value_min": 0
        }
      ],
      "model": "ICPSHC24-30EU-IL-1",
      "options": [
        {
          "access": 2,
          "description": "Controls the transition time (in seconds) of on/off, brightness, color temperature (if applicable) and color (if applicable) changes. Defaults to `0` (no transition).",
          "label": "Transition",
          "name": "transition",
          "property": "transition",
          "type": "numeric",
          "value_min": 0
        },
        {
          "access": 2,
          "description": "State actions will also be published as 'action' when true (default false).",
          "label": "State action",
          "name": "state_action",
          "property": "state_action",
          "type": "binary",
          "value_off": false,
          "value_on": true
        }
      ],
      "supports_ota": true,
      "vendor": "IKEA"
    },
    "disabled": false,
    "endpoints": {
      "1": {
        "bindings": [],
        "clusters": {
          "input": [
            "genBasic",
            "genIdentify",
            "genGroups",
            "genScenes",
            "genOnOff",
            "genLevelCtrl",
            "touchlink",
            "64636"
          ],
          "output": [
            "genScenes",
            "genOta",
            "genPollCtrl",
            "touchlink"
          ]
        },
        "configured_reportings": [],
        "scenes": []
      },
      "242": {
        "bindings": [],
        "clusters": {
          "input": [],
          "output": [
            "greenPower"
          ]
        },
        "configured_reportings": [],
        "scenes": []
      }
    },
    "friendly_name": "cuinaLlumTaulell",
    "ieee_address": "0x0c4314fffe0f8ab6",
    "interview_completed": true,
    "interviewing": false,
    "manufacturer": "IKEA of Sweden",
    "model_id": "TRADFRI Driver 30W",
    "network_address": 10014,
    "power_source": "Mains (single phase)",
    "software_build_id": "2.3.086",
    "supported": true,
    "type": "Router"
  }

So discovering it don't show a "state" channel and I cannot switch it on:

binary_sensor/0x0c4314fffe0f8ab6/update_available
light/0x0c4314fffe0f8ab6/light
select/0x0c4314fffe0f8ab6/effect
select/0x0c4314fffe0f8ab6/power_on_behavior
sensor/0x0c4314fffe0f8ab6/linkquality
sensor/0x0c4314fffe0f8ab6/power_on_behavior
sensor/0x0c4314fffe0f8ab6/update_state
update/0x0c4314fffe0f8ab6/update

Expected Behavior

A state channel should be discovered to allow switching on the light.

Current Behavior

Only brightness can be changed, but light is always off.

Possible Solution

I don't know if it is a zigbee2mqtt bug which should publish state someway, or addon should create it.

• Version used: openhab 4.1.2
• Environment: docker just for testing clean install
• Operating System and version: ubuntu server

[ccutrer]

This is working as expected. In openHAB, dimmer channels are a subtype of switches. So you can send ON/OFF to them, and get their current state as OnOffType directly from the dimmer's state. If you happen to have a color bulb, it goes one step further - a Color item is a subtype of a Dimmer, so that's the only channel exposed (if the bulb doesn't support CCT). And you can send a PercentType to set brightness only without changing color, an OnOffType to turn it on/off without touching brightness, or an HSBType to fully set the color and brightness (and turn it on).

[enboig]

Thanks, I started a topic in forum as it seems it's a "user problem" :-)
https://community.openhab.org/t/problem-adding-a-switch-to-a-dimmer/155304

[enboig]

I think there is a bug.... moving the slider does nothing
https://community.openhab.org/t/problem-adding-a-switch-to-a-dimmer/155304/9

[enboig]

I posted more data in the forum post. Is it enough? Do you need anything else to investigate the problem?

[ccutrer]

I've got the tab open with your forum post, so I won't forget it. I'll let you know when I get to it if I need more info.