74 lines
1.9 KiB
Python
74 lines
1.9 KiB
Python
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
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# SPDX-License-Identifier: MIT
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# EInk Shield test
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import time
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import board
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import busio
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import digitalio
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from analogio import AnalogIn
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from adafruit_epd.epd import Adafruit_EPD
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from adafruit_epd.il91874 import Adafruit_IL91874
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# create the spi device and pins we will need
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spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
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ecs = digitalio.DigitalInOut(board.D10)
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dc = digitalio.DigitalInOut(board.D9)
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srcs = digitalio.DigitalInOut(board.D8) # can be None to use internal memory
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# give them all to our driver
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print("Creating display")
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display = Adafruit_IL91874(
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176,
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264,
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spi, # 2.7" Tri-color display
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cs_pin=ecs,
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dc_pin=dc,
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sramcs_pin=srcs,
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rst_pin=None,
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busy_pin=None,
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)
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display.rotation = 1
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def read_buttons():
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with AnalogIn(board.A3) as ain:
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reading = ain.value / 65535
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if reading > 0.75:
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return None
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if reading > 0.4:
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return 4
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if reading > 0.25:
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return 3
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if reading > 0.13:
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return 2
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return 1
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while True:
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button = read_buttons()
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if not button:
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continue
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print("Button #%d pressed" % button)
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if button == 1:
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print("Clear buffer")
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display.fill(Adafruit_EPD.WHITE)
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display.display()
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if button == 2:
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print("Draw Rectangles")
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display.fill_rect(5, 5, 10, 10, Adafruit_EPD.RED)
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display.rect(0, 0, 20, 30, Adafruit_EPD.BLACK)
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display.display()
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if button == 3:
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print("Draw lines")
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display.line(0, 0, display.width - 1, display.height - 1, Adafruit_EPD.BLACK)
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display.line(0, display.height - 1, display.width - 1, 0, Adafruit_EPD.RED)
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display.display()
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if button == 4:
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print("Draw text")
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display.text("hello world", 25, 10, Adafruit_EPD.BLACK)
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display.display()
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time.sleep(0.01)
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