mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-30 18:09:26 +01:00
122 lines
4.0 KiB
ReStructuredText
122 lines
4.0 KiB
ReStructuredText
.. _lcd_menu:
|
|
|
|
LCD Menu
|
|
========
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up a simple hierarchical menu on displays.
|
|
:image: lcd_menu.png
|
|
|
|
The component provides an infrastructure for setting up a hierarchical menu
|
|
on character based LCD displays. This offers the user an interactive method to display
|
|
labels, control entities like ``switch``, ``select``, ``number`` available locally on the
|
|
ESPHome node, without the requirement of a network connection.
|
|
|
|
.. figure:: images/lcd_menu.png
|
|
:align: center
|
|
:width: 60.0%
|
|
|
|
Overview
|
|
--------
|
|
|
|
The integration implements the :ref:`Display Menu <display_menu>` integration providing
|
|
a hierarchical menu primarily intended to be controlled either by a rotary encoder
|
|
with a button or a five-button joystick controller.
|
|
|
|
The component needs to be connected to an instance of a character based LCD display, which
|
|
like :ref:`lcd-pcf8574` or :ref:`lcd-gpio`. For the best results the GPIO connection is
|
|
recommended; the I²C one running at the speed according to the datasheet (usually ``100``
|
|
kHz) or even ESPHome default (``50`` kHz) will create perceptible delays especially when
|
|
changing a numeric value using the rotary encoder. Most ``PCF8574`` adapters used with
|
|
these displays will happily run at ``200`` or even ``400`` kHz though so if you are comfortable
|
|
accepting risks from running your hardware out of spec, you might want to try that
|
|
in your :ref:`i2c` configuration.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
display:
|
|
- platform: lcd_pcf8574
|
|
id: my_lcd
|
|
dimensions: 20x4
|
|
...
|
|
user_characters:
|
|
- position: 0
|
|
data: # mark_back symbol
|
|
- 0b00100
|
|
- 0b01000
|
|
- 0b11110
|
|
- 0b01001
|
|
- 0b00101
|
|
- 0b00001
|
|
- 0b11110
|
|
- 0b00000
|
|
lambda: |-
|
|
id(my_lcd_menu).draw();
|
|
if (!id(my_lcd_menu).is_active())
|
|
it.print("Menu is not active");
|
|
|
|
# Declare a LCD menu
|
|
lcd_menu:
|
|
id: my_lcd_menu
|
|
display_id: my_lcd
|
|
active: true
|
|
mode: rotary
|
|
mark_back: 0x08
|
|
mark_selected: 0x3e
|
|
mark_editing: 0x2a
|
|
mark_submenu: 0x7e
|
|
items:
|
|
...
|
|
|
|
# Rotary encoder to provide navigation
|
|
sensor:
|
|
- platform: rotary_encoder
|
|
...
|
|
filters:
|
|
debounce: 30ms
|
|
on_anticlockwise:
|
|
- display_menu.up:
|
|
on_clockwise:
|
|
- display_menu.down:
|
|
|
|
# A debounced GPIO push button is used to 'click'
|
|
binary_sensor:
|
|
- platform: gpio
|
|
...
|
|
filters:
|
|
- delayed_on: 30ms
|
|
- delayed_off: 30ms
|
|
on_press:
|
|
- display_menu.enter:
|
|
|
|
Configuration variables:
|
|
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
- **display_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the LCD display.
|
|
- **mark_back** (*Optional*, 0-255): Code of the character used to mark menu items going back
|
|
one level. As the character set lacks a good looking back arrow, using a user defined character
|
|
is advisable (use ``8`` to reference one at position ``0`` to avoid problems with zeros
|
|
in a string). Defaults to ``0x5e`` (``^``).
|
|
- **mark_selected** (*Optional*, 0-255): Code of the character used to mark menu item selected.
|
|
Defaults to ``0x3e`` (``>``).
|
|
- **mark_editing** (*Optional*, 0-255): Code of the character used to mark menu item editing mode.
|
|
Defaults to ``0x2a`` (``*``).
|
|
- **mark_submenu** (*Optional*, 0-255): Code of the character used to mark menu item leading to a
|
|
submenu. Defaults to ``0x7e`` (a right arrow).
|
|
|
|
The rest of the configuration is described in the :ref:`Display Menu <display_menu>` component.
|
|
The menu inherits the dimensions of the connected LCD display and uses the entire area.
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`i2c`
|
|
- :ref:`lcd-pcf8574`
|
|
- :ref:`lcd-gpio`
|
|
- :ref:`Display Menu <display_menu>`
|
|
- :doc:`/components/sensor/rotary_encoder`
|
|
- :doc:`/components/binary_sensor/index`
|
|
- :apiref:`lcd_menu/lcd_menu.h`
|
|
- :ghedit:`Edit`
|