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161 lines
5.4 KiB
ReStructuredText
161 lines
5.4 KiB
ReStructuredText
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ILI9xxx TFT LCD Series
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======================
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.. seo::
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:description: Instructions for setting up ILI9xxx TFT LCD display drivers.
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:image: ili9341.jpg
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.. _ili9xxx:
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Usage
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-----
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This component is the successor of the ILI9341 component allowing to control more display drivers and use 16bit colors when enough free ram.
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The ``ILI9xxx`` display platform allows you to use
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ILI9341 (`datasheet <https://cdn-shop.adafruit.com/datasheets/ILI9341.pdf>`__,
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`Aliexpress <https://www.aliexpress.com/af/Ili9341.html>`__) and other
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displays from the same chip family with ESPHome. As this is a somewhat higher resolution display and may require pins
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beyond the typical SPI connections, it is better suited for use with the ESP32.
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**Note:** To use 16bit instead of 8bit colors use a esp32 with enough PSRAM the display.
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.. figure:: images/ili9341-full.jpg
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:align: center
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:width: 75.0%
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ILI9341 display
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.. code-block:: yaml
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# Example minimal configuration entry
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display:
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- platform: ili9xxx
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model: ili9341
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cs_pin: 14
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dc_pin: 27
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reset_pin: 33
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lambda: |-
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it.fill(COLOR_BLACK);
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it.print(0, 0, id(my_font), id(my_red), TextAlign::TOP_LEFT, "Hello World!");
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Configuration variables:
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************************
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- **model** (**Required**): The model of the display. Options are:
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- ``M5STACK``, ``TFT 2.4``, ``TFT 2.4R``
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- ``ILI9341``, ``ILI9342``, ``ILI9481``, ``ILI9486``, ``ILI9488``, ``ST7796``
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- **cs_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The CS pin.
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- **dc_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The DC pin.
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- **reset_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The RESET pin.
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- **rotation** (*Optional*): Set the rotation of the display. Everything drawn in the ``lambda:`` will be rotated
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per this option. One of ``0°`` (default), ``90°``, ``180°``, or ``270°``.
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- **lambda** (*Optional*, :ref:`lambda <config-lambda>`): The lambda to use for rendering the content on the display.
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See :ref:`display-engine` for more information.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to re-draw the screen. Defaults to ``5s``.
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- **auto_clear_enabled** (*Optional*, boolean): Whether to automatically clear the display in each loop (''true'', default),
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or to keep the existing display content (must overwrite explicitly, e.g., only on data change).
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- **pages** (*Optional*, list): Show pages instead of a single lambda. See :ref:`display-pages`.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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- **color_palette** (*Optional*): The type of color pallet that will be used in the ESP's internal 8-bits-per-pixel buffer. This can be used to improve color depth quality of the image. For example if you know that the display will only be showing grayscale images, the clarity of the display can be improved by targeting the available colors to monochrome only. Options are:
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- ``NONE`` (default)
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- ``GRAYSCALE``
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- ``IMAGE_ADAPTIVE``
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- **color_palette_images** (*Optional*): A list of image files that will be used to generate the color pallet for the display. This should only be used in conjunction with ``-color_palette: IMAGE_ADAPTIVE`` above. The images will be analysed at compile time and a custom color pallet will be created based on the most commonly occuring colors. A typical setting would be a sample image that represented the fully populated display. This can significantly improve the quality of displayed images. Note that these images are not stored on the ESP device, just the 256byte color pallet created from them.
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Configuration examples
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**********************
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To utilize the color capabilities of this display module, you'll likely want to add a ``color:`` section to your
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YAML configuration; please see :ref:`color <config-color>` for more detail on this configuration section.
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To use colors in your lambda:
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.. code-block:: yaml
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color:
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- id: my_red
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red: 100%
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green: 3%
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blue: 5%
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...
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display:
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...
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lambda: |-
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it.rectangle(0, 0, it.get_width(), it.get_height(), id(my_red));
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To bring in color images:
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.. code-block:: yaml
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image:
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- file: "image.jpg"
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id: my_image
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resize: 200x200
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type: RGB24
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...
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display:
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...
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lambda: |-
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it.image(0, 0, id(my_image));
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To configure a dimmable backlight:
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.. code-block:: yaml
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# Define a PWM output on the ESP32
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output:
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- platform: ledc
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pin: 32
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id: gpio_32_backlight_pwm
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# Define a monochromatic, dimmable light for the backlight
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light:
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- platform: monochromatic
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output: gpio_32_backlight_pwm
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name: "Display Backlight"
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id: back_light
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restore_mode: ALWAYS_ON
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To configure an image adaptive color pallet to show greater than 8 bit color depth with a RAM limited screen buffer:
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.. code-block:: yaml
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image:
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- file: "sample_100x100.png"
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id: myimage
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resize: 100x100
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type: RGB24
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display:
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- platform: ili9xxx
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model: ili9341
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cs_pin: 5
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dc_pin: 4
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reset_pin: 22
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rotation: 90
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id: tft_ha
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color_palette: IMAGE_ADAPTIVE
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color_palette_images:
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- "sample_100x100.png"
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- "display_design.png"
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lambda: |-
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it.image(0, 0, id(myimage));
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See Also
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--------
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- :doc:`index`
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- :apiref:`ili9xxx/ili9xxx_display.h`
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- :ghedit:`Edit`
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