Show a 300x400 bitmap on the Open Book's display

adafruit_il0398.mpy

code.py

# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

"""Simple test script for 4.2" 400x300 black and white displays.

*** REQUIRES adafruit_il0398 ***

Supported products:
  * WaveShare 4.2" Black and White
    * https://www.waveshare.com/product/modules/oleds-lcds/e-paper/4.2inch-e-paper.htm
    * https://www.waveshare.com/product/modules/oleds-lcds/e-paper/4.2inch-e-paper-module.htm
  """

import time
import board
import busio
import displayio
import digitalio
import adafruit_il0398

# Open Book peripheral enable pin (active low)
en = digitalio.DigitalInOut(board.GP0)
en.switch_to_output()
en.value = False

displayio.release_displays()

spi = busio.SPI(board.GP10, MOSI=board.GP11)
epd_cs = board.GP9
epd_dc = board.GP8
epd_reset = board.GP7
epd_busy = board.GP6

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

display = adafruit_il0398.IL0398(
    display_bus, width=300, height=400, busy_pin=epd_busy, rotation=270
)
display.show(None)

g = displayio.Group()

with open("/macos.bmp", "rb") as f:
    pic = displayio.OnDiskBitmap(f)
    t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
    g.append(t)

    display.show(g)

    display.refresh()

    while True:
        pass

macos.bmp