Minor improvements
Due to the new driver files, two separate images are required; one for black-white pixels and the other for red-white pixels. Instead of splitting the final image into two, the software now uses 2 images. The calibration cycle won't waste too much space by printing too many lines. An improvement in the write_text function leads to more consistent line heights. Leaving sections empty now will no longer cause problems.
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@@ -34,10 +34,26 @@ else:
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"""Create 3 sections of the display, based on percentage"""
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top_section_width = middle_section_width = bottom_section_width = display_width
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top_section_height = int(display_height*0.11)
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middle_section_height = int(display_height*0.65)
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bottom_section_height = int(display_height - middle_section_height -
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top_section_height)
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if top_section and bottom_section:
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print('top and bottom section occupied')
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top_section_height = int(display_height*0.11)
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bottom_section_height = int(display_height*0.24)
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elif top_section and not bottom_section:
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print('top section occupied')
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top_section_height = int(display_height*0.11)
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bottom_section_height = 0
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elif bottom_section and not top_section:
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print('bottom_section occupied')
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top_section_height = 0
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bottom_section_height = int(display_height*0.24)
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elif not top_section and not bottom_section:
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top_section_height = bottom_section_height = 0
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middle_section_height = int(display_height - top_section_height -
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bottom_section_height)
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"""Find out the y-axis position of each section"""
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top_section_offset = 0
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@@ -60,48 +76,52 @@ NotoSansCJK = fontpath+'NotoSansCJK/NotoSansCJKsc-'
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NotoSans = fontpath+'NotoSans/NotoSans-SemiCondensed'
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weatherfont = fontpath+'WeatherFont/weathericons-regular-webfont.ttf'
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"""Fonts sizes"""
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default_font_size = 18
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agenda_font_size = 14
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calendar_font_size = 16
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rss_font_size = 14
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weather_font_size = 12
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"""Fontsizes"""
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default_fontsize = 18
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agenda_fontsize = 14
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calendar_fontsize = 14
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rss_fontsize = 14
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weather_fontsize = 12
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"""Automatically select correct fonts to support set language"""
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if language in ['ja','zh','zh_tw','ko']:
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default = ImageFont.truetype(NotoSansCJK+'Regular.otf', default_font_size)
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semi = ImageFont.truetype(NotoSansCJK+'Medium.otf', default_font_size)
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bold = ImageFont.truetype(NotoSansCJK+'Bold.otf', default_font_size)
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default = ImageFont.truetype(NotoSansCJK+'Regular.otf', default_fontsize)
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semi = ImageFont.truetype(NotoSansCJK+'Medium.otf', default_fontsize)
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bold = ImageFont.truetype(NotoSansCJK+'Bold.otf', default_fontsize)
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else:
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default = ImageFont.truetype(NotoSans+'.ttf', default_font_size)
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semi = ImageFont.truetype(NotoSans+'Medium.ttf', default_font_size)
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bold = ImageFont.truetype(NotoSans+'SemiBold.ttf', default_font_size)
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default = ImageFont.truetype(NotoSans+'.ttf', default_fontsize)
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semi = ImageFont.truetype(NotoSans+'Medium.ttf', default_fontsize)
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bold = ImageFont.truetype(NotoSans+'SemiBold.ttf', default_fontsize)
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w_font = ImageFont.truetype(weatherfont, weather_font_size)
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w_font = ImageFont.truetype(weatherfont, weather_fontsize)
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"""Create image with given parameters"""
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"""Create a blank image for black pixels and a colour image for coloured pixels"""
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image = Image.new('RGB', (display_width, display_height), background_colour)
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image_col = Image.new('RGB', (display_width, display_height), 'white')
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draw = ImageDraw.Draw(image)
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draw_col = ImageDraw.Draw(image_col)
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"""Custom function to add text on an image"""
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def write_text(space_width, space_height, text, tuple,
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font=default, alignment='middle', autofit = False, fill_width = 1.0,
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fill_height = 0.8, colour = text_colour, rotation = None):
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"""tuple refers to (x,y) position on display"""
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if autofit == True or fill_width != 1.0 or fill_height != 0.8:
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size = 8
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font = ImageFont.truetype(font.path, size)
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text_width, text_height = font.getsize(text)
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text_width, text_height = font.getsize(text)[0], font.getsize('hg')[1]
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while text_width < int(space_width * fill_width) and text_height < int(space_height * fill_height):
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size += 1
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font = ImageFont.truetype(font.path, size)
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text_width, text_height = font.getsize(text)
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text_width, text_height = font.getsize(text)[0], font.getsize('hg')[1]
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text_width, text_height = font.getsize(text)
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text_width, text_height = font.getsize(text)[0], font.getsize('hg')[1]
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while (text_width, text_height) > (space_width, space_height):
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text=text[0:-1]
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text_width, text_height = font.getsize(text)
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text_width, text_height = font.getsize(text)[0], font.getsize('hg')[1]
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if alignment is "" or "middle" or None:
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x = int((space_width / 2) - (text_width / 2))
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if alignment is 'left':
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@@ -115,7 +135,11 @@ def write_text(space_width, space_height, text, tuple,
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ImageDraw.Draw(space).text((x, y), text, fill=colour, font=font)
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if rotation != None:
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space.rotate(rotation, expand = True)
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if colour == 'black' or 'white':
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image.paste(space, tuple, space)
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else:
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image_col.paste(space, tuple, space)
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def clear_image(section, colour = background_colour):
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"""Clear the image"""
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@@ -124,6 +148,10 @@ def clear_image(section, colour = background_colour):
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box = Image.new('RGB', (width, height), colour)
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image.paste(box, position)
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if three_colour_support == True:
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image_col.paste(box, position)
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def crop_image(input_image, section):
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"""Crop an input image to the desired section"""
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x1, y1 = 0, eval(section+'_offset')
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@@ -162,6 +190,16 @@ def draw_square(tuple, radius, width, height, colour=text_colour, line_width=1):
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c5, c6 = ((x+width)-diameter, (y+height)-diameter), (x+width, y+height)
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c7, c8 = (x, (y+height)-diameter), (x+diameter, y+height)
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if three_colour_support == True:
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draw_col.line( (p1, p2) , fill=colour, width = line_width)
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draw_col.line( (p3, p4) , fill=colour, width = line_width)
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draw_col.line( (p5, p6) , fill=colour, width = line_width)
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draw_col.line( (p7, p8) , fill=colour, width = line_width)
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draw_col.arc( (c1, c2) , 180, 270, fill=colour, width=line_width)
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draw_col.arc( (c3, c4) , 270, 360, fill=colour, width=line_width)
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draw_col.arc( (c5, c6) , 0, 90, fill=colour, width=line_width)
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draw_col.arc( (c7, c8) , 90, 180, fill=colour, width=line_width)
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else:
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draw.line( (p1, p2) , fill=colour, width = line_width)
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draw.line( (p3, p4) , fill=colour, width = line_width)
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draw.line( (p5, p6) , fill=colour, width = line_width)
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@@ -171,6 +209,7 @@ def draw_square(tuple, radius, width, height, colour=text_colour, line_width=1):
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draw.arc( (c5, c6) , 0, 90, fill=colour, width=line_width)
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draw.arc( (c7, c8) , 90, 180, fill=colour, width=line_width)
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def internet_available():
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"""check if the internet is available"""
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try:
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@@ -206,24 +245,6 @@ def image_cleanup():
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os.remove(temp_files)
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print('Done')
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def split_colours(image):
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if three_colour_support == True:
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"""Split image into two, one for red pixels, the other for black pixels"""
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buffer = numpy.array(image.convert('RGB'))
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red, green = buffer[:, :, 0], buffer[:, :, 1]
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buffer_red, buffer_black = numpy.array(image), numpy.array(image)
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buffer_red[numpy.logical_and(red >= 200, green <= 90)] = [0,0,0] #red->black
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red1 = buffer_red[:,:,0]
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buffer_red[red1 != 0] = [255,255,255] #white
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red_im = Image.fromarray(buffer_red).convert('1',dither=True).rotate(270,expand=True)
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buffer_black[numpy.logical_and(red <= 180, red == green)] = [0,0,0] #black
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red2 = buffer_black[:,:,0]
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buffer_black[red2 != 0] = [255,255,255] # white
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black_im = Image.fromarray(buffer_black).convert('1', dither=True).rotate(270,expand=True)
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return black_im, red_im
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def calibrate_display(no_of_cycles):
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"""How many times should each colour be calibrated? Default is 3"""
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epaper = driver.EPD()
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@@ -235,18 +256,20 @@ def calibrate_display(no_of_cycles):
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print('----------Started calibration of E-Paper display----------')
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if 'colour' in model:
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for _ in range(no_of_cycles):
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print('Calibrating black...')
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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('Calibrating red/yellow...')
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print('colour...', end = ' ')
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epaper.display(epaper.getbuffer(white), epaper.getbuffer(black))
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print('Calibrating white...')
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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, no_of_cycles))
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else:
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for _ in range(no_of_cycles):
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print('Calibrating black...')
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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('Calibrating white...')
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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, no_of_cycles))
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