mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-10-29 08:09:47 +01:00
138 lines
5.0 KiB
ReStructuredText
138 lines
5.0 KiB
ReStructuredText
.. _nextion_text_sensor:
|
|
|
|
Nextion Text Sensor Component
|
|
===============================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up Nextion text sensor.
|
|
:image: nextion.jpg
|
|
|
|
The ``nextion`` text sensor platform supports text strings. It can be a component or variable in the Nextion display.
|
|
It is best to set the components vscope to global in the Nextion Editor. This way the component will be available
|
|
if the page is shown or not.
|
|
|
|
See :doc:`/components/display/nextion` for setting up the display
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
display:
|
|
- platform: nextion
|
|
id: nextion1
|
|
# ...
|
|
|
|
text_sensor:
|
|
- platform: nextion
|
|
nextion_id: nextion1
|
|
name: text0
|
|
id: text0
|
|
update_interval: 4s
|
|
component_name: text0
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **name** (**Required**, string): The name of the sensor.
|
|
- **nextion_id** (*Optional*, :ref:`config-id`): The ID of the Nextion display.
|
|
- **component_name** (*Optional*, string): The name of the Nextion component.
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The duration to update the sensor. If using a :ref:`nextion_custom_text_sensor_protocol` this should not be used
|
|
- **background_color** (*Optional*, :ref:`config-color`): The background color
|
|
- **foreground_color** (*Optional*, :ref:`config-color`): The foreground color
|
|
- **font_id** (*Optional*, uint8_t): The font id for the component
|
|
- **visible** (*Optional*, boolean ): Visible or not
|
|
- All other options from :ref:`Text Sensor <config-text_sensor>`.
|
|
|
|
**Only one** *component_name* **or** *variable_name* **can be set**
|
|
|
|
See :ref:`nextion_text_sensor_how_things_update` for additional information
|
|
|
|
Globals
|
|
*******
|
|
The Nextion does not retain data on Nextion page changes. Additionally, if a page is changed and the **component_name** does not exist on that page then
|
|
nothing will be updated. To get around this, the Nextion components can be changed to have a vscope of ``global``. If this is set, then the **component_name**
|
|
should be prefixed with the page name (page0/page1 or whatever you have changed it to).
|
|
|
|
*Example*
|
|
|
|
``component_name: page0.text0``
|
|
|
|
.. _nextion_text_sensor_lambda_calls:
|
|
|
|
Lambda Calls
|
|
************
|
|
|
|
From :ref:`lambdas <config-lambda>`, you can call several methods to access
|
|
some more advanced functions (see the full :apiref:`nextion/text_sensor/nextion_textsensor.h` for more info).
|
|
|
|
.. _nextion_text_sensor_set_state:
|
|
|
|
- ``set_state(bool value, bool publish, bool send_to_nextion)``: Set the state to **value**. Publish the new state to HASS. Send_to_Nextion is to publish the state to the Nextion.
|
|
|
|
.. _nextion_text_sensor_update:
|
|
|
|
- ``update()``: Poll from the Nextion
|
|
|
|
.. _nextion_text_sensor_settings:
|
|
|
|
- ``set_background_color(Color color)``: Sets the background color to **Color**
|
|
- ``set_foreground_color(Color color)``: Sets the background color to **Color**
|
|
- ``set_visible(bool visible)`` : Sets visible or not. If set to false, no updates will be sent to the component
|
|
|
|
.. _nextion_text_sensor_how_things_update:
|
|
|
|
How things Update
|
|
-----------------
|
|
A Nextion component with an integer value (.val) or Nextion variable will be automatically polled if **update_interval** is set.
|
|
To have the Nextion send the data you can use the :ref:`nextion_custom_text_sensor_protocol` for this. Add the :ref:`nextion_custom_text_sensor_protocol` to the
|
|
component or function you want to trigger the send. Typically this is in *Touch Press Event* but some components, like a slider, should have it
|
|
set in the *Touch Release Event* to capture all the changes. Since this is a custom protocol it can be sent from anywhere (timers/functions/components)
|
|
in the Nextion.
|
|
|
|
.. note::
|
|
|
|
There is no need to check the *Send Component ID* for the *Touch Press Event* or *Touch Release Event*
|
|
since this will be sending the real value to esphome.
|
|
|
|
Using the above yaml example:
|
|
- "text0" will poll the Nextion for ``text0.txt`` value and set the state accordingly.
|
|
|
|
- :ref:`Lambda Calls <nextion_text_sensor_lambda_calls>`.
|
|
|
|
.. note::
|
|
|
|
No updates will be sent to the Nextion if it is sleeping. Once it wakes, the components will be updated. If a component is invisible, :code:`visible(false)`, then it won't update until it is set to be visible.
|
|
|
|
|
|
.. _nextion_custom_text_sensor_protocol:
|
|
|
|
Nextion Custom Text Sensor Protocol
|
|
-----------------------------------
|
|
All lines are required
|
|
|
|
.. code-block:: c++
|
|
|
|
printh 92
|
|
prints "text0",0
|
|
printh 00
|
|
prints text0.txt,0
|
|
printh 00
|
|
printh FF FF FF
|
|
|
|
*Explanation*
|
|
|
|
- ``printh 92`` Tells the library this is text sensor
|
|
- ``prints "text0",0`` Sends the name that matches **component_name** or **variable_name**
|
|
- ``printh 00`` Sends a NULL
|
|
- ``prints text0.txt,0`` The actual text to send. For a variable use the Nextion variable name ``text0`` with out ``.txt``
|
|
- ``printh 00`` Sends a NULL
|
|
- ``printh FF FF FF`` Nextion command ack
|
|
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`/components/display/nextion`
|
|
- :doc:`index`
|
|
- :apiref:`nextion/text_sensor/nextion_textsensor.h`
|
|
- :ghedit:`Edit`
|