Simple test¶
Ensure your device works with this simple test.
1# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
2# SPDX-FileCopyrightText: Copyright (c) 2021 Melissa LeBlanc-Williams for Adafruit Industries
3#
4# SPDX-License-Identifier: Unlicense
5
6"""Simple test script for 1.54" 200x200 tri-color display.
7Supported products:
8 * Adafruit 1.54" Tri-Color Display Breakout
9 * https://www.adafruit.com/product/4868
10 """
11
12import time
13import board
14import displayio
15import adafruit_ssd1681
16
17# Compatibility with both CircuitPython 8.x.x and 9.x.x.
18# Remove after 8.x.x is no longer a supported release.
19try:
20 from fourwire import FourWire
21except ImportError:
22 from displayio import FourWire
23
24displayio.release_displays()
25
26# This pinout works on a Feather M4 and may need to be altered for other boards.
27spi = board.SPI() # Uses SCK and MOSI
28epd_cs = board.D9
29epd_dc = board.D10
30epd_reset = board.D5
31epd_busy = board.D6
32
33display_bus = FourWire(
34 spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
35)
36time.sleep(1)
37
38display = adafruit_ssd1681.SSD1681(
39 display_bus,
40 width=200,
41 height=200,
42 busy_pin=epd_busy,
43 highlight_color=0xFF0000,
44 rotation=180,
45)
46
47g = displayio.Group()
48
49with open("/display-ruler.bmp", "rb") as f:
50 pic = displayio.OnDiskBitmap(f)
51 # CircuitPython 6 & 7 compatible
52 t = displayio.TileGrid(
53 pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
54 )
55 # CircuitPython 7 compatible only
56 # t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
57 g.append(t)
58
59 display.root_group = g
60
61 display.refresh()
62
63 print("refreshed")
64
65 time.sleep(120)