esphome-docs/components/switch/index.rst
2019-02-17 19:09:52 +01:00

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Switch Component
================
.. seo::
:description: Instructions for setting up generic switches in ESPHome.
:image: folder-open.png
The ``switch`` domain includes all platforms that should show up like a
switch and can only be turned ON or OFF.
.. _config-switch:
Base Switch Configuration
-------------------------
.. code-block:: yaml
switch:
- platform: ...
name: "Switch Name"
icon: "mdi:restart"
Configuration variables:
- **name** (**Required**, string): The name of the switch.
- **icon** (*Optional*, icon): Manually set the icon to use for the
sensor in the frontend.
- **inverted** (*Optional*, boolean): Whether to invert the binary
state, i.e. report ON states as OFF and vice versa. Defaults
to ``False``.
- **internal** (*Optional*, boolean): Mark this component as internal. Internal components will
not be exposed to the frontend (like Home Assistant). Only specifying an ``id`` without
a ``name`` will implicitly set this to true.
- **on_turn_on** (*Optional*, :ref:`Action <config-action>`): An automation to perform
when the switch is turned on. See :ref:`switch-on_turn_on_off_trigger`.
- **on_turn_off** (*Optional*, :ref:`Action <config-action>`): An automation to perform
when the switch is turned off. See :ref:`switch-on_turn_on_off_trigger`.
- If MQTT enabled, All other options from :ref:`MQTT Component <config-mqtt-component>`.
.. _switch-toggle_action:
``switch.toggle`` Action
************************
This action toggles a switch with the given ID when executed.
.. code-block:: yaml
on_...:
then:
- switch.toggle: relay_1
.. _switch-turn_on_action:
``switch.turn_on`` Action
*************************
This action turns a switch with the given ID on when executed.
.. code-block:: yaml
on_...:
then:
- switch.turn_on: relay_1
.. _switch-turn_off_action:
``switch.turn_off`` Action
**************************
This action turns a switch with the given ID off when executed.
.. code-block:: yaml
on_...:
then:
- switch.turn_off: relay_1
.. _switch-is_on_condition:
.. _switch-is_off_condition:
``switch.is_on`` / ``switch.is_off`` Condition
**********************************************
This :ref:`Condition <config-condition>` checks if the given switch is ON (or OFF).
.. code-block:: yaml
# In some trigger:
on_...:
if:
condition:
# Same syntax for is_off
switch.is_on: my_switch
lambda calls
************
From :ref:`lambdas <config-lambda>`, you can call several methods on all covers to do some
advanced stuff (see the full API Reference for more info).
- ``publish_state()``: Manually cause the switch to publish a new state and store it internally.
If it's different from the last internal state, it's additionally published to the frontend.
.. code-block:: yaml
// Within lambda, make the switch report a specific state
id(my_switch).publish_state(false);
id(my_switch).publish_state(true);
- ``state``: Retrieve the current state of the switch.
.. code-block:: yaml
// Within lambda, get the switch state and conditionally do something
if (id(my_switch).state) {
// Switch is ON, do something here
} else {
// Switch is OFF, do something else here
}
- ``turn_off()``/``turn_on``: Manually turn the switch ON/OFF from code.
Similar to the ``switch.turn_on`` and ``switch.turn_off`` actions,
but can be used in complex lambda expressions.
.. code-block:: yaml
id(my_switch).turn_off();
id(my_switch).turn_on(true);
// Toggle the switch
id(my_switch).toggle();
.. _switch-is_on_off_condition:
``switch.is_on`` / ``switch.is_off`` Condition
**********************************************
This :ref:`condition <config-condition>` passes if the given switch is on/off.
.. code-block:: yaml
# in a trigger:
on_...:
if:
condition:
switch.is_on: my_switch
# same goes for is_off
then:
- script.execute: my_script
.. _switch-on_turn_on_off_trigger:
``switch.on_turn_on`` / ``switch.on_turn_off`` Trigger
******************************************************
This trigger is activated each time the switch is turned on. It becomes active
right after the switch component has acknowledged the state (e.g. after it switched
ON/OFF itself).
.. code-block:: yaml
switch:
- platform: gpio # or any other platform
# ...
on_turn_on:
- logger.log: "Switch Turned On!"
on_turn_off:
- logger.log: "Switch Turned Off!"
See Also
--------
- :apiref:`switch_/switch.h`
- :ghedit:`Edit`
.. toctree::
:maxdepth: 1
:glob:
*
.. disqus::