95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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"""
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Inky-Calendar epaper functions
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Copyright by aceisace
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"""
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from importlib import import_module
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from PIL import Image
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class Display:
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"""Display class for inkycal
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Handles rendering on display"""
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def __init__(self, epaper_model):
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"""Load the drivers for this epaper model"""
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if 'colour' in epaper_model:
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self.supports_colour = True
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else:
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self.supports_colour = False
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try:
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driver_path = 'inkycal.display.drivers.{}'.format(epaper_model)
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driver = import_module(driver_path)
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self._epaper = driver.EPD()
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except ImportError:
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raise Exception('This module is not supported. Check your spellings?')
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except FileNotFoundError:
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raise Exception('SPI could not be found. Please check if SPI is enabled')
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def render(self, im_black, im_colour = None):
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"""Render an image on the epaper
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im_colour is required for three-colour epapers"""
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epaper = self._epaper
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if self.supports_colour == False:
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print('Initialising..', end = '')
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epaper.init()
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print('Updating display......', end = '')
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epaper.display(epaper.getbuffer(im_black))
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print('Done')
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elif self.supports_colour == True:
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if not im_colour:
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raise Exception('im_colour is required for coloured epaper displays')
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print('Initialising..', end = '')
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epaper.init()
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print('Updating display......', end = '')
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epaper.display(epaper.getbuffer(im_black), epaper.getbuffer(im_colour))
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print('Done')
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print('Sending E-Paper to deep sleep...', end = '')
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epaper.sleep()
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print('Done')
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def calibrate(self, cycles=3):
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"""Flush display with single colour to prevent burn-ins (ghosting)
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cycles -> int. How many times should each colour be flushed?
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recommended cycles = 3"""
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epaper = self._epaper
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epaper.init()
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white = Image.new('1', (epaper.width, epaper.height), 'white')
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black = Image.new('1', (epaper.width, epaper.height), 'black')
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print('----------Started calibration of ePaper display----------')
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if self.supports_colour == True:
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for _ in range(cycles):
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print('Calibrating...', end= ' ')
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print('black...', end= ' ')
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epaper.display(epaper.getbuffer(black), epaper.getbuffer(white))
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print('colour...', end = ' ')
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epaper.display(epaper.getbuffer(white), epaper.getbuffer(black))
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print('white...')
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epaper.display(epaper.getbuffer(white), epaper.getbuffer(white))
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print('Cycle {0} of {1} complete'.format(_+1, cycles))
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if self.supports_colour == False:
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for _ in range(cycles):
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print('Calibrating...', end= ' ')
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print('black...', end = ' ')
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epaper.display(epaper.getbuffer(black))
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print('white...')
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epaper.display(epaper.getbuffer(white)),
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print('Cycle {0} of {1} complete'.format(_+1, cycles))
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print('-----------Calibration complete----------')
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epaper.sleep()
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