Introduction

CircuitPython displayio driver for IL91874-based ePaper displays

Dependencies

This driver depends on:

• Adafruit CircuitPython

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-il91874

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-il91874

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .env
source .env/bin/activate
pip3 install adafruit-circuitpython-il91874

Usage Example

"""Simple test script for 2.7" 264x176 Tri-Color display shield

Supported products:
  * Adafruit 2.7" Tri-Color ePaper Display Shield
    * https://www.adafruit.com/product/4229
  """

import time
import board
import busio
import displayio
import adafruit_il91874

displayio.release_displays()

spi = board.SPI()
epd_cs = board.D10
epd_dc = board.D9

display_bus = displayio.FourWire(spi, command=epd_dc, chip_select=epd_cs, baudrate=1000000)
time.sleep(1)

display = adafruit_il91874.IL91874(display_bus, width=264, height=176, highlight_color=0xff0000, rotation=90)

g = displayio.Group()

f = open("/display-ruler.bmp", "rb")

pic = displayio.OnDiskBitmap(f)
t = displayio.TileGrid(pic, pixel_shader=displayio.ColorConverter())
g.append(t)

display.show(g)

display.refresh()

print("refreshed")

time.sleep(120)

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Documentation

For information on building library documentation, please check out this guide.