mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-08 09:52:07 +01:00
97 lines
2.6 KiB
ReStructuredText
97 lines
2.6 KiB
ReStructuredText
Template Binary Sensor
|
|
======================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up template binary sensors.
|
|
:image: description.png
|
|
|
|
The ``template`` binary sensor platform allows you to define any :ref:`lambda template <config-lambda>`
|
|
and construct a binary sensor out if it.
|
|
|
|
For example, below configuration would turn the state of an ultrasonic sensor into
|
|
a binary sensor.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
binary_sensor:
|
|
- platform: template
|
|
name: "Garage Door Open"
|
|
lambda: |-
|
|
if (id(ultrasonic_sensor1).state > 30) {
|
|
// Garage Door is open.
|
|
return true;
|
|
} else {
|
|
// Garage Door is closed.
|
|
return false;
|
|
}
|
|
|
|
Possible return values of the lambda:
|
|
|
|
- ``return true;`` if the binary sensor should be ON.
|
|
- ``return false;`` if the binary sensor should be OFF.
|
|
- ``return {};`` if the state is not known (use last known state)
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **name** (**Required**, string): The name of the binary sensor.
|
|
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`):
|
|
Lambda to be evaluated repeatedly to get the current state of the binary sensor.
|
|
- **id** (*Optional*,
|
|
:ref:`config-id`): Manually specify
|
|
the ID used for code generation.
|
|
- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
|
|
|
|
.. _binary_sensor-template-publish_action:
|
|
|
|
``binary_sensor.template.publish`` Action
|
|
-----------------------------------------
|
|
|
|
You can also publish a state to a template binary sensor from elsewhere in your YAML file
|
|
with the ``binary_sensor.template.publish`` action.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
binary_sensor:
|
|
- platform: template
|
|
name: "Garage Door Open"
|
|
id: template_bin
|
|
|
|
# in some trigger
|
|
on_...:
|
|
- binary_sensor.template.publish:
|
|
id: template_bin
|
|
state: ON
|
|
|
|
# Templated
|
|
- binary_sensor.template.publish:
|
|
id: template_bin
|
|
state: !lambda 'return id(some_sensor).state > 30;'
|
|
|
|
Configuration options:
|
|
|
|
- **id** (**Required**, :ref:`config-id`): The ID of the template binary sensor.
|
|
- **state** (**Required**, boolean, :ref:`templatable <config-templatable>`):
|
|
The state to publish.
|
|
|
|
.. note::
|
|
|
|
This action can also be written in lambdas:
|
|
|
|
.. code-block:: cpp
|
|
|
|
id(template_bin).publish_state(true);
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`/components/binary_sensor/index`
|
|
- :doc:`/components/sensor/template`
|
|
- :ref:`automation`
|
|
- :apiref:`binary_sensor/template_binary_sensor.h`
|
|
- :ghedit:`Edit`
|
|
|
|
.. disqus::
|