77 lines
2 KiB
Python
77 lines
2 KiB
Python
# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
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# SPDX-FileCopyrightText: Copyright (c) 2021 Melissa LeBlanc-Williams for Adafruit Industries
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#
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# SPDX-License-Identifier: Unlicense
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"""Simple test script for 2.13" 250x122 tri-color display.
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Supported products:
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* Adafruit 2.13" Tri-Color eInk Display Breakout
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* https://www.adafruit.com/product/4947
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* Adafruit 2.13" Tri-Color eInk Display FeatherWing
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* https://www.adafruit.com/product/4814
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* Adafruit 2.13" Mono eInk Display FeatherWing
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* https://www.adafruit.com/product/4195
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"""
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import time
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import board
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import displayio
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import adafruit_ssd1680
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# For 8.x.x and 9.x.x. When 8.x.x is discontinued as a stable release, change this.
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try:
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from fourwire import FourWire
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except ImportError:
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from displayio import FourWire
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displayio.release_displays()
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# This pinout works on a Metro 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.D8 # Set to None for FeatherWing
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epd_busy = board.D7 # Set to None for FeatherWing
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display_bus = 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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# For issues with display not updating top/bottom rows correctly set colstart to 8
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display = adafruit_ssd1680.SSD1680(
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display_bus,
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width=250,
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height=122,
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busy_pin=epd_busy,
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highlight_color=0xFF0000,
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rotation=270,
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)
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g = displayio.Group()
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with open("/display-ruler.bmp", "rb") as f:
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pic = displayio.OnDiskBitmap(f)
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t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
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g.append(t)
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display.root_group = g
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display.refresh()
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print("refreshed")
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time.sleep(display.time_to_refresh + 5)
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# Always refresh a little longer. It's not a problem to refresh
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# a few seconds more, but it's terrible to refresh too early
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# (the display will throw an exception when if the refresh
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# is too soon)
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print("waited correct time")
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# Keep the display the same
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while True:
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time.sleep(10)
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