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esphome-docs/components/display/rpi_dpi_rgb.rst
Clyde Stubbs d2af542012
Add st7701s and rpi_dpi_rgb docs (#3546) 
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
2024-03-12 11:45:57 +13:00

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RPI_DPI_RGB Display Driver
===========================
.. seo::
:description: Instructions for setting up 16 bit "RPI_DPI_RGB" parallel displays
:image: waveshare_touch-s3.jpg
.. _rpi_dpi_rgb:
Models
------
This display driver supports displays with 16 bit parallel interfaces, often referred to as "RPI_DPI_RGB" type.
These have a parallel interface but no SPI interface and require no configuration of the driver chip.
This driver has been tested with the following displays:
- Waveshare ESP32-S3-Touch-LCD-4.3
- Makerfabs 4.3" display (Sunton)
Usage
-----
This component requires an ESP32 (usually an ESP32-S3 because of the number of GPIO pins required) and the use of
ESP-IDF. PSRAM is a requirement due to the size of the display buffer.
.. figure:: images/waveshare_touch-s3.jpg
:align: center
:width: 75.0%
Waveshare ESP32-S3 Touch 4.3
.. code-block:: yaml
# Example minimal configuration entry
display:
- platform: rpi_dpi_rgb
id: rpi_disp
dimensions:
width: 800
height: 480
de_pin: REPLACE_ME
hsync_pin: REPLACE_ME
vsync_pin: REPLACE_ME
pclk_pin: REPLACE_ME
data_pins:
red:
- XX #r1
- XX #r2
- XX #r3
- XX #r4
- XX #r5
green:
- XX #g0
- XX #g1
- XX #g2
- XX #g3
- XX #g4
- XX #g5
blue:
- XX #b1
- XX #b2
- XX #b3
- XX #b4
- XX #b5
Configuration variables:
************************
- **data_pins** (**Required**) A list of pins used for the databus. Specified in 3 groups:
- **red**: (**Required**, :ref:`Pin Schema <config-pin_schema>`) Exactly 5 pin numbers for the red databits, listed from least to most significant bit.
- **green**: (**Required**, :ref:`Pin Schema <config-pin_schema>`) Exactly 6 pin numbers for the green databits, listed from least to most significant bit.
- **blue**: (**Required**, :ref:`Pin Schema <config-pin_schema>`) Exactly 5 pin numbers for the blue databits, listed from least to most significant bit.
- **de_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The DE pin
- **pclk_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The PCLK pin.
- **hsync_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The Horizontal sync pin.
- **vsync_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The Vertical sync pin.
- **reset_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The RESET pin.
- **hsync_pulse_width** (*Optional*, int): The horizontal sync pulse width.
- **hsync_front_porch** (*Optional*, int): The horizontal front porch length.
- **hsync_back_porch** (*Optional*, int): The horizontal back porch length.
- **vsync_pulse_width** (*Optional*, int): The vertical sync pulse width.
- **vsync_front_porch** (*Optional*, int): The vertical front porch length.
- **vsync_back_porch** (*Optional*, int): The vertical back porch length.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to re-draw the screen. Defaults to ``5s``.
- **auto_clear_enabled** (*Optional*, boolean): Whether to automatically clear the display in each loop (''true'', default),
or to keep the existing display content (must overwrite explicitly, e.g., only on data change).
- **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.
- **color_order** (*Optional*): Should be one of ``bgr`` (default) or ``rgb``.
- **dimensions** (**Required**): Dimensions of the screen, specified either as *width* **x** *height* (e.g ``320x240``) or with separate config keys.
- **height** (**Required**, int): Specifies height of display in pixels.
- **width** (**Required**, int): Specifies width of display.
- **offset_width** (*Optional*, int): Specify an offset for the x-direction of the display, typically used when an LCD is smaller than the maximum supported by the driver chip. Default is 0
- **offset_height** (*Optional*, int): Specify an offset for the y-direction of the display. Default is 0.
- **pclk_frequency** (*Optional*): Set the pixel clock speed. Default is 16MHz.
- **pclk_inverted** (*Optional* bool): If the pclk is active negative (default is True)
- **invert_colors** (*Optional*): With this boolean option you can invert the display colors. **Note** some of the displays have this option set automatically to true and can't be changed.
- **rotation** (*Optional*): Rotate the display presentation in software. Choose one of ``0°``, ``90°``, ``180°``, or ``270°``.
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`): The lambda to use for rendering the content on the display.
See :ref:`display-engine` for more information.
The horizontal and vertical ``pulse_width``, ``front_porch`` and ``back_porch`` values are optional, but may require
changing for a specific display. Refer to the manufacturer's sample code for suitable values. These specify timing
requirements for the display.
Example configurations
----------------------
Waveshare ESP32-S3 Touch 4.3
****************************
.. code-block:: yaml
display:
- platform: rpi_dpi_rgb
auto_clear_enabled: false
color_order: RGB
pclk_frequency: 16MHz
dimensions:
width: 800
height: 480
de_pin:
number: 5
hsync_pin:
number: 46
ignore_strapping_warning: true
vsync_pin:
number: 3
ignore_strapping_warning: true
pclk_pin: 7
hsync_back_porch: 30
hsync_front_porch: 210
hsync_pulse_width: 30
vsync_back_porch: 4
vsync_front_porch: 4
vsync_pulse_width: 4
data_pins:
red:
- 1 #r3
- 2 #r4
- 42 #r5
- 41 #r6
- 40 #r7
blue:
- 14 #b3
- 38 #b4
- 18 #b5
- 17 #b6
- 10 #b7
green:
- 39 #g2
- 0 #g3
- 45 #g4
- 48 #g5
- 47 #g6
- 21 #g7
Makerfabs 4.3" 800x480 display
******************************
.. code-block:: yaml
display:
- platform: rpi_dpi_rgb
update_interval: never
auto_clear_enabled: false
id: rpi_display
color_order: RGB
rotation: 90
dimensions:
width: 800
height: 480
de_pin:
number: 40
hsync_pin: 39
vsync_pin: 41
pclk_pin: 42
data_pins:
red:
- 45 #r1
- 48 #r2
- 47 #r3
- 21 #r4
- 14 #r5
green:
- 5 #g0
- 6 #g1
- 7 #g2
- 15 #g3
- 16 #g4
- 4 #g5
blue:
- 8 #b1
- 3 #b2
- 46 #b3
- 9 #b4
- 1 #b5
See Also
--------
- :doc:`index`
- :apiref:`rpi_dpi_rgb/rpi_dpi_rgb.h`
- :ghedit:`Edit`
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