mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-05 09:20:08 +01:00
87 lines
2.5 KiB
ReStructuredText
87 lines
2.5 KiB
ReStructuredText
Template Text Sensor
|
|
====================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up template text sensors in ESPHome
|
|
:image: description.svg
|
|
|
|
The ``template`` text sensor platform allows you to create a text sensor with templated values
|
|
using :ref:`lambdas <config-lambda>`.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
text_sensor:
|
|
- platform: template
|
|
name: "Template Text Sensor"
|
|
lambda: |-
|
|
return {"Hello World"};
|
|
update_interval: 60s
|
|
|
|
|
|
Possible return values for the lambda:
|
|
|
|
- ``return {"STRING LITERAL"};`` the new value for the sensor of type ``std::string``. **Has to be** in
|
|
brackets ``{}``!
|
|
- ``return {};`` if you don't want to publish a new state (advanced).
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **name** (**Required**, string): The name of the text sensor.
|
|
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`):
|
|
Lambda to be evaluated every update interval to get the new value of the text sensor
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
|
|
text sensor. Set to ``never`` to disable updates. Defaults to ``60s``.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
- All other options from :ref:`Text Sensor <config-text_sensor>`.
|
|
|
|
.. _text_sensor-template-publish_action:
|
|
|
|
``text_sensor.template.publish`` Action
|
|
---------------------------------------
|
|
|
|
You can also publish a state to a template text sensor from elsewhere in your YAML file
|
|
with the ``text_sensor.template.publish`` action.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
text_sensor:
|
|
- platform: template
|
|
name: "Template Text Sensor"
|
|
id: template_text
|
|
|
|
# in some trigger
|
|
on_...:
|
|
- text_sensor.template.publish:
|
|
id: template_text
|
|
state: "Hello World"
|
|
|
|
# Templated
|
|
- text_sensor.template.publish:
|
|
id: template_text
|
|
state: !lambda 'return "Hello World";'
|
|
|
|
Configuration options:
|
|
|
|
- **id** (**Required**, :ref:`config-id`): The ID of the template text sensor.
|
|
- **state** (**Required**, string, :ref:`templatable <config-templatable>`):
|
|
The state to publish.
|
|
|
|
.. note::
|
|
|
|
This action can also be written in lambdas:
|
|
|
|
.. code-block:: cpp
|
|
|
|
id(template_text).publish_state("Hello World");
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`/components/text_sensor/index`
|
|
- :ref:`automation`
|
|
- :apiref:`template/text_sensor/template_text_sensor.h`
|
|
- :ghedit:`Edit`
|