43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
#!/usr/bin python3
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# -*- coding: utf-8 -*-
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"""
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This part of the code exposes functions to interface with the eink display
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"""
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import display.epd2in13_V4 as eink
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from PIL import Image
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import logging
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class DisplayHelper:
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def __init__(self, width, height):
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# Initialise the display
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self.logger = logging.getLogger('raspagenda')
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self.screenwidth = width
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self.screenheight = height
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self.epd = eink.EPD()
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self.epd.init()
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def update(self, img):
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# Updates the display with the grayscale and red images
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# start displaying on eink display
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# self.epd.clear()
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self.epd.display(img)
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self.logger.info('E-Ink display update complete.')
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def calibrate(self, cycles=1):
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# Calibrates the display to prevent ghosting
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white = Image.new('1', (self.screenwidth, self.screenheight), 'white')
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black = Image.new('1', (self.screenwidth, self.screenheight), 'black')
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for _ in range(cycles):
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self.epd.display(self.epd.getbuffer(black))
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self.epd.display(self.epd.getbuffer(white))
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self.epd.display(self.epd.getbuffer(black))
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self.epd.display(self.epd.getbuffer(white))
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self.logger.info('E-Ink display calibration complete.')
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def sleep(self):
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# send E-Ink display to deep sleep
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self.epd.sleep()
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self.logger.info('E-Ink display entered deep sleep.')
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