mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-26 17:27:47 +01:00
241 lines
7.3 KiB
ReStructuredText
241 lines
7.3 KiB
ReStructuredText
ST7789V TFT LCD
|
|
===============
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up ST7789V TFT LCD display drivers.
|
|
:image: st7789v.jpg
|
|
|
|
.. _st7789v:
|
|
|
|
Usage
|
|
-----
|
|
|
|
The ``st7789v`` display platform allows you to use
|
|
ST7789V (`datasheet <https://github.com/Xinyuan-LilyGO/TTGO-T-Display>`__,
|
|
`Tindie <https://www.tindie.com/products/ttgo/lilygor-ttgo-t-display/>`__)
|
|
displays with ESPHome. Note that this component utilizes the 4-Wire :ref:`SPI bus <spi>`; the physical
|
|
connection is already in place on the TTGO T-Display module as shown below.
|
|
|
|
.. figure:: images/st7789v-full.jpg
|
|
:align: center
|
|
:width: 75.0%
|
|
|
|
ST7789V TFT LCD on TTGO T-Display module
|
|
|
|
This module has a USB-C connector with an on-board serial adapter for programming. Simply connect to a
|
|
USB-C port to get started! (Depending on your operating system of choice, you might need to install an
|
|
appropriate driver.) It is also possible to power the module via the 5V and G (ground) pins along
|
|
the edges of the module, or via a battery attached to the connector on the bottom of the board. The
|
|
ESP32's UART pins are not brought out to the headers, so the on-board serial adapter must be used for
|
|
hardwired programming. (OTA updates are of course possible after ESPHome is initially installed.)
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example minimal configuration entry
|
|
spi:
|
|
clk_pin: GPIO18
|
|
mosi_pin: GPIO19
|
|
|
|
display:
|
|
- platform: st7789v
|
|
backlight_pin: GPIO4
|
|
cs_pin: GPIO5
|
|
dc_pin: GPIO16
|
|
reset_pin: GPIO23
|
|
lambda: |-
|
|
it.print(0, 0, id(font), "Hello World!");
|
|
|
|
.. warning::
|
|
|
|
When using the TTGO T-Display module, the GPIO pin numbers above *cannot be changed* as they are
|
|
hardwired within the module/PCB.
|
|
|
|
Configuration variables:
|
|
************************
|
|
|
|
- **cs_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The CS pin.
|
|
- **dc_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The DC pin.
|
|
- **reset_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The RESET pin.
|
|
- **backlight_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The display's backlight pin.
|
|
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`): The lambda to use for rendering the content on the display.
|
|
See :ref:`display-engine` for more information.
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The interval to re-draw the screen. Defaults to ``5s``.
|
|
- **pages** (*Optional*, list): Show pages instead of a single lambda. See :ref:`display-pages`.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
|
|
Configuration examples
|
|
**********************
|
|
|
|
As of version 1.15, ESPHome supports color displays. To utilize the color capabilities of this display
|
|
module, you'll likely want to add a ``color:`` section to your YAML configuration; please see
|
|
:ref:`color <config-color>` for more detail on this configuration section.
|
|
|
|
To use colors in your lambda:
|
|
|
|
.. code-block:: yaml
|
|
|
|
color:
|
|
- id: my_red
|
|
red: 100%
|
|
green: 3%
|
|
blue: 5%
|
|
|
|
...
|
|
|
|
display:
|
|
...
|
|
lambda: |-
|
|
it.rectangle(0, 0, it.get_width(), it.get_height(), id(my_red));
|
|
|
|
|
|
To bring in color images:
|
|
|
|
.. code-block:: yaml
|
|
|
|
image:
|
|
- file: "image.jpg"
|
|
id: my_image
|
|
resize: 200x200
|
|
type: RGB24
|
|
|
|
...
|
|
|
|
display:
|
|
...
|
|
lambda: |-
|
|
it.image(0, 0, id(my_image));
|
|
|
|
Complete example
|
|
****************
|
|
|
|
The following is an example YAML configuration that you can add to your base device configuration. It defines:
|
|
|
|
- three fonts (well, one font in three sizes)
|
|
- a ``binary_sensor`` that indicates the state of connectivity to the API
|
|
- a ``binary_sensor`` for each of the two buttons on the TTGO module
|
|
- a ``switch``, allowing control of the backlight from HA
|
|
- several colors
|
|
- a color image to be shown on the display
|
|
- time, for display...on the display
|
|
- the SPI configuration for communicating with the display
|
|
- the display component itself, for use on the TTGO module
|
|
- a lambda which paints the screen as shown in the picture above:
|
|
|
|
- blue borders, with a sort of "title bar" along the top
|
|
- "ESPHome" in yellow in the top left corner
|
|
- the API connection status, "Online" in green when connected, "Offline" in red when not
|
|
- the time and date, more or less in the center of the display
|
|
|
|
To use this example, you need only to provide the font file, "Helvetica.ttf" (or update it to
|
|
a font of your choosing) and an image file, "image.png" (it may also be a ".jpg"). Place these
|
|
into the same directory as the YAML configuration file itself. Comment/Uncomment/Modify the
|
|
appropriate lines of C code in the lambda to hide or show the image or text as you wish.
|
|
|
|
.. code-block:: yaml
|
|
|
|
color:
|
|
- id: my_red
|
|
red: 100%
|
|
green: 0%
|
|
blue: 0%
|
|
- id: my_yellow
|
|
red: 100%
|
|
green: 100%
|
|
blue: 0%
|
|
- id: my_green
|
|
red: 0%
|
|
green: 100%
|
|
blue: 0%
|
|
- id: my_blue
|
|
red: 0%
|
|
green: 0%
|
|
blue: 100%
|
|
- id: my_gray
|
|
red: 50%
|
|
green: 50%
|
|
blue: 50%
|
|
|
|
font:
|
|
- file: "Helvetica.ttf"
|
|
id: helvetica_48
|
|
size: 48
|
|
- file: "Helvetica.ttf"
|
|
id: helvetica_24
|
|
size: 24
|
|
- file: "Helvetica.ttf"
|
|
id: helvetica_12
|
|
size: 12
|
|
|
|
binary_sensor:
|
|
- platform: status
|
|
name: "Node Status"
|
|
id: system_status
|
|
- platform: gpio
|
|
pin:
|
|
number: GPIO0
|
|
inverted: true
|
|
mode:
|
|
input: true
|
|
pullup: true
|
|
name: "T-Display Button Input 0"
|
|
id: tdisplay_button_input_0
|
|
- platform: gpio
|
|
pin:
|
|
number: GPIO35
|
|
inverted: true
|
|
name: "T-Display Button Input 1"
|
|
id: tdisplay_button_input_1
|
|
|
|
# We can still control the backlight independently
|
|
switch:
|
|
- platform: gpio
|
|
pin: GPIO4
|
|
name: "Backlight"
|
|
id: backlight
|
|
|
|
image:
|
|
- file: "image.png"
|
|
id: my_image
|
|
resize: 200x200
|
|
type: RGB24
|
|
|
|
time:
|
|
- platform: homeassistant
|
|
id: esptime
|
|
|
|
spi:
|
|
clk_pin: GPIO18
|
|
mosi_pin: GPIO19
|
|
|
|
display:
|
|
- platform: st7789v
|
|
backlight_pin: GPIO4
|
|
cs_pin: GPIO5
|
|
dc_pin: GPIO16
|
|
reset_pin: GPIO23
|
|
rotation: 270
|
|
lambda: |-
|
|
it.rectangle(0, 0, it.get_width(), it.get_height(), id(my_blue));
|
|
it.rectangle(0, 20, it.get_width(), it.get_height(), id(my_blue)); // header bar
|
|
|
|
it.strftime((240 / 2), (140 / 3) * 1 + 5, id(helvetica_24), id(my_gray), TextAlign::CENTER, "%Y-%m-%d", id(esptime).now());
|
|
it.strftime((240 / 2), (140 / 3) * 2 + 5, id(helvetica_48), id(my_gray), TextAlign::CENTER, "%H:%M:%S", id(esptime).now());
|
|
it.print(5, 5, id(helvetica_12), id(my_yellow), TextAlign::TOP_LEFT, "ESPHome");
|
|
|
|
// Comment out the above lines to see the image without text overlaid
|
|
// it.image(0, 0, id(my_image));
|
|
|
|
if (id(system_status).state) {
|
|
it.print(235, 5, id(helvetica_12), id(my_green), TextAlign::TOP_RIGHT, "Online");
|
|
}
|
|
else {
|
|
it.print(235, 5, id(helvetica_12), id(my_red), TextAlign::TOP_RIGHT, "Offline");
|
|
}
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`index`
|
|
- :apiref:`st7789v_base/st7789v_base.h`
|
|
- :ghedit:`Edit`
|