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202 lines
6.0 KiB
ReStructuredText
Number Component
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================
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.. seo::
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:description: Instructions for setting up number components in ESPHome.
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:image: folder-open.svg
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ESPHome has support for components to create a number entity. A number entity is
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like a sensor that can read a value from a device, but is useful when that value
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can be set by the user/frontend.
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.. note::
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Home Assistant Core 2021.7 or higher is required for ESPHome number entities to work.
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.. _config-number:
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Base Number Configuration
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-------------------------
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All numbers in ESPHome have a name and an optional icon.
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.. code-block:: yaml
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# Example number configuration
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name: Livingroom Volume
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# Optional variables:
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icon: "mdi:volume-high"
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Configuration variables:
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- **name** (**Required**, string): The name for the number.
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- **icon** (*Optional*, icon): Manually set the icon to use for the number in the frontend.
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- **internal** (*Optional*, boolean): Mark this component as internal. Internal components will
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not be exposed to the frontend (like Home Assistant). Only specifying an ``id`` without
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a ``name`` will implicitly set this to true.
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- **disabled_by_default** (*Optional*, boolean): If true, then this entity should not be added to any client's frontend,
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(usually Home Assistant) without the user manually enabling it (via the Home Assistant UI).
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Requires Home Assistant 2021.9 or newer. Defaults to ``false``.
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- **entity_category** (*Optional*, string): The category of the entity.
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See https://developers.home-assistant.io/docs/core/entity/#generic-properties
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for a list of available options. Requires Home Assistant 2021.11 or newer.
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Set to ``""`` to remove the default entity category.
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- **unit_of_measurement** (*Optional*, string): Manually set the unit
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of measurement for the number. Requires Home Assistant Core 2021.12 or newer.
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- **mode** (*Optional*, string): Defines how the number should be displayed in the frontend.
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See https://developers.home-assistant.io/docs/core/entity/number/#properties
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for a list of available options. Requires Home Assistant Core 2021.12 or newer.
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Defaults to ``"auto"``.
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Automations:
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- **on_value** (*Optional*, :ref:`Automation <automation>`): An automation to perform
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when a new value is published. See :ref:`number-on_value`.
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- **on_value_range** (*Optional*, :ref:`Automation <automation>`): An automation to perform
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when a published value transition from outside to a range to inside. See :ref:`number-on_value_range`.
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MQTT Options:
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- All other options from :ref:`MQTT Component <config-mqtt-component>`.
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Number Automation
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-----------------
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You can access the most recent state of the number in :ref:`lambdas <config-lambda>` using
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``id(number_id).state``.
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.. _number-on_value:
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``on_value``
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************
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This automation will be triggered when a new value is published. In :ref:`Lambdas <config-lambda>`
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you can get the value from the trigger with ``x``.
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.. code-block:: yaml
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number:
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- platform: template
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# ...
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on_value:
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then:
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- light.turn_on:
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id: light_1
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red: !lambda "return x/255;"
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Configuration variables: See :ref:`Automation <automation>`.
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.. _number-on_value_range:
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``on_value_range``
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******************
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With this automation you can observe if a number value passes from outside
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a defined range of values to inside a range.
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This trigger will only trigger when the new value is inside the range and the previous value
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was outside the range. On startup, the last state before reboot is restored and if the value crossed
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the boundary during the boot process, the trigger is also executed.
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Define the range with ``above`` and ``below``. If only one of them is defined, the interval is half-open.
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So for example ``above: 5`` with no below would mean the range from 5 to positive infinity.
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.. code-block:: yaml
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number:
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- platform: template
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# ...
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on_value_range:
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above: 5
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below: 10
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then:
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- switch.turn_on: relay_1
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Configuration variables:
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- **above** (*Optional*, float): The minimum for the trigger.
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- **below** (*Optional*, float): The maximum for the trigger.
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- See :ref:`Automation <automation>`.
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.. _number-in_range_condition:
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``number.in_range`` Condition
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*****************************
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This condition passes if the state of the given number is inside a range.
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Define the range with ``above`` and ``below``. If only one of them is defined, the interval is half-open.
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So for example ``above: 5`` with no below would mean the range from 5 to positive infinity.
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.. code-block:: yaml
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# in a trigger:
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on_...:
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if:
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condition:
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number.in_range:
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id: my_number
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above: 50.0
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then:
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- script.execute: my_script
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Configuration variables:
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- **above** (*Optional*, float): The minimum for the condition.
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- **below** (*Optional*, float): The maximum for the condition.
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.. _number-set_action:
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``number.set`` Action
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*********************
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This is an :ref:`Action <config-action>` for setting a number state.
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.. code-block:: yaml
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- number.set:
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id: my_number
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value: 42
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Configuration variables:
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- **id** (**Required**, :ref:`config-id`): The ID of the number to set.
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- **value** (**Required**, float, :ref:`templatable <config-templatable>`):
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The value to set the number to.
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.. _number-lambda_calls:
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lambda calls
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************
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From :ref:`lambdas <config-lambda>`, you can call several methods on all numbers to do some
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advanced stuff (see the full API Reference for more info).
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- ``make_call()``: Set the number value.
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.. code-block:: cpp
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// Within lambda, push a value of 42
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auto call = id(my_number).make_call();
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call.set_value(42);
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call.perform();
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- ``.state``: Retrieve the current value of the number. Is ``NAN`` if no value has been read or set.
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.. code-block:: cpp
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// For example, create a custom log message when a value is received:
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ESP_LOGI("main", "Value of my number: %f", id(my_number).state);
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See Also
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--------
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- :apiref:`number/number.h`
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- :ghedit:`Edit`
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.. toctree::
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:maxdepth: 1
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:glob:
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*
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