kopia lustrzana https://github.com/peterhinch/micropython-nano-gui
45 wiersze
1.4 KiB
Python
45 wiersze
1.4 KiB
Python
# epd29_pico.py Config for Pico with 2.9" ePaper.
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# Customise for your hardware config.
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2023 Peter Hinch
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# Supports Adafruit 2.9" monochrome EPD with interface board connected to Pyboard.
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# Interface breakout: https://www.adafruit.com/product/4224
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# Display: https://www.adafruit.com/product/4262
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# Demo of initialisation procedure designed to minimise risk of memory fail
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# when instantiating the frame buffer. The aim is to do this as early as
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# possible before importing other modules.
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# WIRING. Adafruit schematic linked on the product web pagerefers to a different
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# device. These are the pins on the physical board.
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# Pico Breakout
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# Vbus Vin (1)
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# Gnd Gnd (3)
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# 4 MISO (no need to connect)
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# 6 SCK (4)
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# 7 MOSI (6)
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# 8 DC (8)
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# 9 RST (10)
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# 10 CS (7)
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# 11 BUSY (11) (Low = Busy)
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from machine import Pin, SPI
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import gc
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from drivers.epaper.epd29 import EPD as SSD
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pdc = Pin(8, Pin.OUT, value=0)
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prst = Pin(9, Pin.OUT, value=1)
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pcs = Pin(10, Pin.OUT, value=1)
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pbusy = Pin(11, Pin.IN)
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# Baudrate. Adafruit use 1MHz at
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# https://learn.adafruit.com/adafruit-eink-display-breakouts/circuitpython-code-2
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# Datasheet P35 indicates up to 10MHz.
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spi = SPI(0, sck=Pin(6), mosi=Pin(7), miso=Pin(4), baudrate=5_000_000)
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gc.collect() # Precaution before instantiating framebuf
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ssd = SSD(spi, pcs, pdc, prst, pbusy) # Create a display instance
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