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75 lines
2.3 KiB
ReStructuredText
75 lines
2.3 KiB
ReStructuredText
PCD 8544 Display (Nokia 5110/3310)
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==================================
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.. seo::
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:description: Instructions for setting up PCD8544 display drivers.
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:image: pcd8544.jpg
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.. _pcd8544:
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Usage
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-----
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The ``pcd8544`` display platform allows you to use
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PCD8544 (`Adafruit <https://www.adafruit.com/product/338>`__)
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displays with ESPHome. Connection to this display is made using the 4-Wire :ref:`SPI bus <spi>`.
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It's a monochrome LCD display was used in old Nokia 5110/3310 cell phones.
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The resolution of the display is 84x48 pixels.
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.. figure:: images/pcd8544-full.jpg
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:align: center
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:width: 75.0%
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PCD8544 Display
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Connect CLK, DIN, CS (CE), DC, and RST to pins on your ESP. For power, connect
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VCC to 3.3V and GND to GND.
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.. code-block:: yaml
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# Example configuration entry
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spi:
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clk_pin: D5
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mosi_pin: D7
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display:
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- platform: pcd8544
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reset_pin: D0
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cs_pin: D8
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dc_pin: D1
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contrast: 0x7f
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lambda: |-
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it.print(0, 0, id(font), "Hello World!");
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Backlight
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*********
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To use a backlight LIGHT pin needs to be connected to ground. If connected to GPIO pin it can be controlled from ESPHome. See :doc:`/components/light/monochromatic`.
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Configuration variables:
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************************
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- **reset_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The RESET pin.
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- **cs_pin** (**Required**, :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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- **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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- **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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- **contrast** (*Optional*, int): Set screen contrast (0-255). Defaults to ``0x7f``.
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See Also
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--------
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- :doc:`index`
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- :apiref:`pcd8544/pcd8544.h`
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- `Tutorial from Adafruit <https://learn.adafruit.com/nokia-5110-3310-monochrome-lcd>`__
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- `PCD8544 Library <https://github.com/adafruit/Adafruit-PCD8544-Nokia-5110-LCD-library>`__ by `Adafruit <https://www.adafruit.com/>`__
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- :ghedit:`Edit`
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