67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
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# SPDX-FileCopyrightText: Copyright (c) 2023 Melissa LeBlanc-Williams for Adafruit Industries
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#
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# SPDX-License-Identifier: Unlicense
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"""
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Simple test script for 2.7" 264x176 Tri-Color display
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Supported products:
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* `Adafruit 2.7" Tri-Color eInk / ePaper Display
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with SRAM <https://www.adafruit.com/product/4098>`_
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This program only requires the adafruit_ek79686 library in /lib
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for CircuitPython 5.0 and above which has displayio support.
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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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from fourwire import FourWire
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import adafruit_ek79686
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# Used to ensure the display is free in CircuitPython
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displayio.release_displays()
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# Define the pins needed for display use on the Metro
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spi = board.SPI()
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epd_cs = board.D10
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epd_dc = board.D9
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epd_reset = board.D5
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epd_busy = board.D6
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# Create the displayio connection to the display pins
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display_bus = FourWire(spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000)
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time.sleep(1) # Wait a bit
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# Create the display object - the third color is red (0xff0000)
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display = adafruit_ek79686.EK79686(
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display_bus,
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width=264,
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height=176,
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busy_pin=epd_busy,
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highlight_color=0xFF0000,
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rotation=90,
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)
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# Create a display group for our screen objects
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g = displayio.Group()
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# Display a ruler graphic from the root directory of the CIRCUITPY drive
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pic = displayio.OnDiskBitmap("/display-ruler.bmp")
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# Create a Tilegrid with the bitmap and put in the displayio group
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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 (does not refresh)
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display.root_group = g
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# Show the image on the display
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display.refresh()
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print("refreshed")
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# Do Not refresh the screen more often than every 180 seconds
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# for eInk displays! Rapid refreshes will damage the panel.
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time.sleep(180)
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