kopia lustrzana https://github.com/peterhinch/micropython-nano-gui
43 wiersze
1.5 KiB
Python
43 wiersze
1.5 KiB
Python
# epd29_sync.py Config for synchronous applications on 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) 2020 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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# Pyb Breakout
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# Vin Vin (1)
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# Gnd Gnd (3)
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# Y8 MOSI (6)
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# Y6 SCK (4)
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# Y4 BUSY (11) (Low = Busy)
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# Y3 RST (10)
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# Y2 CS (7)
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# Y1 DC (8)
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import machine
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import gc
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from drivers.epaper.epd29 import EPD as SSD
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pdc = machine.Pin('Y1', machine.Pin.OUT_PP, value=0)
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pcs = machine.Pin('Y2', machine.Pin.OUT_PP, value=1)
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prst = machine.Pin('Y3', machine.Pin.OUT_PP, value=1)
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pbusy = machine.Pin('Y4', machine.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 = machine.SPI(2, 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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# ssd.demo_mode = True
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