154 lines
4.3 KiB
ReStructuredText
154 lines
4.3 KiB
ReStructuredText
Introduction
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============
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.. image:: https://readthedocs.org/projects/adafruit-circuitpython-uc8151d/badge/?version=latest
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:target: https://docs.circuitpython.org/projects/uc8151d/en/latest/
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:alt: Documentation Status
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.. image:: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_Bundle/main/badges/adafruit_discord.svg
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:target: https://adafru.it/discord
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:alt: Discord
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.. image:: https://github.com/adafruit/Adafruit_CircuitPython_UC8151D/workflows/Build%20CI/badge.svg
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:target: https://github.com/adafruit/Adafruit_CircuitPython_UC8151D/actions
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:alt: Build Status
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.. image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json
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:target: https://github.com/astral-sh/ruff
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:alt: Code Style: Ruff
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CircuitPython `displayio` driver for US8151D-based ePaper displays
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Dependencies
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=============
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This driver depends on:
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* `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
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Please ensure all dependencies are available on the CircuitPython filesystem.
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This is easily achieved by downloading
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`the Adafruit library and driver bundle <https://circuitpython.org/libraries>`_
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or individual libraries can be installed using
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`circup <https://github.com/adafruit/circup>`_.
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Adafruit 2.9" Flexible 296x128 Monochrome eInk / ePaper Display
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`Purchase one from the Adafruit shop <http://www.adafruit.com/products/4262>`_
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Installing from PyPI
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=====================
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On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
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PyPI <https://pypi.org/project/adafruit-circuitpython-uc8151d/>`_.
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To install for current user:
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.. code-block:: shell
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pip3 install adafruit-circuitpython-uc8151d
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To install system-wide (this may be required in some cases):
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.. code-block:: shell
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sudo pip3 install adafruit-circuitpython-uc8151d
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To install in a virtual environment in your current project:
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.. code-block:: shell
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mkdir project-name && cd project-name
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python3 -m venv .venv
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source .venv/bin/activate
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pip3 install adafruit-circuitpython-uc8151d
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Installing to a Connected CircuitPython Device with Circup
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==========================================================
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Make sure that you have ``circup`` installed in your Python environment.
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Install it with the following command if necessary:
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.. code-block:: shell
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pip3 install circup
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With ``circup`` installed and your CircuitPython device connected use the
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following command to install:
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.. code-block:: shell
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circup install adafruit_uc8151d
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Or the following command to update an existing version:
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.. code-block:: shell
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circup update
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Usage Example
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=============
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.. code-block:: python
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import time
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import board
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import displayio
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import fourwire
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import adafruit_uc8151d
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displayio.release_displays()
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# This pinout works on a Feather M4 and may need to be altered for other boards.
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spi = board.SPI() # Uses SCK and MOSI
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epd_cs = board.D9
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epd_dc = board.D10
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epd_reset = board.D5
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epd_busy = None
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display_bus = fourwire.FourWire(
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spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
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)
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time.sleep(1)
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display = adafruit_uc8151d.UC8151D(
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display_bus, width=296, height=128, rotation=90, busy_pin=epd_busy
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)
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g = displayio.Group()
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pic = displayio.OnDiskBitmap("/display-ruler.bmp")
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t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
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g.append(t)
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# Place the display group on the screen
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display.root_group = g
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# Refresh the display to have it actually show the image
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# NOTE: Do not refresh eInk displays sooner than 180 seconds
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display.refresh()
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print("refreshed")
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time.sleep(180)
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Documentation
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=============
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API documentation for this library can be found on `Read the Docs <https://docs.circuitpython.org/projects/uc8151d/en/latest/>`_.
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For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
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Contributing
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============
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Contributions are welcome! Please read our `Code of Conduct
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<https://github.com/adafruit/Adafruit_CircuitPython_UC8151D/blob/HEAD/CODE_OF_CONDUCT.md>`_
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before contributing to help this project stay welcoming.
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