text: #!/usr/bin/python
  # -*- coding:utf-8 -*-
  import sys
  import os
  picdir = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'pic')
  libdir = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'lib')
  if os.path.exists(libdir):
      sys.path.append(libdir)
  
  import logging
  from waveshare_epd import epd7in5bc
  import time
  from PIL import Image,ImageDraw,ImageFont
  import traceback
  
  logging.basicConfig(level=logging.DEBUG)
  
  try:
      logging.info("epd7in5bc Demo")
      
      epd = epd7in5bc.EPD()
      logging.info("init and Clear")
      epd.init()
      epd.Clear()
      time.sleep(1)
      
      # Drawing on the image
      logging.info("Drawing")    
      font24 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)
      font18 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 18)
      
      # Drawing on the Horizontal image
      logging.info("1.Drawing on the Horizontal image...") 
      HBlackimage = Image.new('1', (epd.width, epd.height), 255)  # 298*126
      HRYimage = Image.new('1', (epd.width, epd.height), 255)  # 298*126  ryimage: red or yellow image  
      drawblack = ImageDraw.Draw(HBlackimage)
      drawry = ImageDraw.Draw(HRYimage)
      drawblack.text((10, 0), 'hello world', font = font24, fill = 0)
      drawblack.text((10, 20), '7.5inch e-Paper bc', font = font24, fill = 0)
      drawblack.text((150, 0), u'微雪电子', font = font24, fill = 0)    
      drawblack.line((20, 50, 70, 100), fill = 0)
      drawblack.line((70, 50, 20, 100), fill = 0)
      drawblack.rectangle((20, 50, 70, 100), outline = 0)    
      drawry.line((165, 50, 165, 100), fill = 0)
      drawry.line((140, 75, 190, 75), fill = 0)
      drawry.arc((140, 50, 190, 100), 0, 360, fill = 0)
      drawry.rectangle((80, 50, 130, 100), fill = 0)
      drawry.chord((200, 50, 250, 100), 0, 360, fill = 0)
      epd.display(epd.getbuffer(HBlackimage), epd.getbuffer(HRYimage))
      time.sleep(2)
      
      # Drawing on the Vertical image
      logging.info("2.Drawing on the Vertical image...")
      LBlackimage = Image.new('1', (epd.height, epd.width), 255)  # 126*298
      LRYimage = Image.new('1', (epd.height, epd.width), 255)  # 126*298
      drawblack = ImageDraw.Draw(LBlackimage)
      drawry = ImageDraw.Draw(LRYimage)
      
      drawblack.text((2, 0), 'hello world', font = font18, fill = 0)
      drawblack.text((2, 20), '7.5inch epd bc', font = font18, fill = 0)
      drawblack.text((20, 50), u'微雪电子', font = font18, fill = 0)
      drawblack.line((10, 90, 60, 140), fill = 0)
      drawblack.line((60, 90, 10, 140), fill = 0)
      drawblack.rectangle((10, 90, 60, 140), outline = 0)
      drawry.line((95, 90, 95, 140), fill = 0)
      drawry.line((70, 115, 120, 115), fill = 0)
      drawry.arc((70, 90, 120, 140), 0, 360, fill = 0)
      drawry.rectangle((10, 150, 60, 200), fill = 0)
      drawry.chord((70, 150, 120, 200), 0, 360, fill = 0)
      epd.display(epd.getbuffer(LBlackimage), epd.getbuffer(LRYimage))
      time.sleep(2)
      
      logging.info("3.read bmp file")
      HBlackimage = Image.open(os.path.join(picdir, '7in5b-b.bmp'))
      HRYimage = Image.open(os.path.join(picdir, '7in5b-r.bmp'))
      # HBlackimage = Image.open(os.path.join(picdir, '7in5c-b.bmp'))
      # HRYimage = Image.open(os.path.join(picdir, '7in5c-r.bmp'))
      epd.display(epd.getbuffer(HBlackimage), epd.getbuffer(HRYimage))
      time.sleep(2)
      
      logging.info("4.read bmp file on window")
      blackimage1 = Image.new('1', (epd.width, epd.height), 255)  # 298*126
      redimage1 = Image.new('1', (epd.width, epd.height), 255)  # 298*126    
      newimage = Image.open(os.path.join(picdir, '100x100.bmp'))
      blackimage1.paste(newimage, (50,10))    
      epd.display(epd.getbuffer(blackimage1), epd.getbuffer(redimage1))
      
      logging.info("Clear...")
      epd.init()
      epd.Clear()
      
      logging.info("Goto Sleep...")
      epd.sleep()
      epd.Dev_exit()
          
  except IOError as e:
      logging.info(e)
      
  except KeyboardInterrupt:    
      logging.info("ctrl + c:")
      epd7in5bc.epdconfig.module_exit()
      exit()
  