text: # *****************************************************************************
  # * | File        :	  epd3in7.py
  # * | Author      :   Waveshare team
  # * | Function    :   Electronic paper driver
  # * | Info        :
  # *----------------
  # * | This version:   V1.0
  # * | Date        :   2020-07-16
  # # | Info        :   python demo
  # -----------------------------------------------------------------------------
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documnetation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to  whom the Software is
  # furished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  #
  
  import logging
  from . import epdconfig
  
  # Display resolution
  EPD_WIDTH       = 280
  EPD_HEIGHT      = 480
  
  GRAY1  = 0xff #white
  GRAY2  = 0xC0 #Close to white
  GRAY3  = 0x80 #Close to balck
  GRAY4  = 0x00 #balck
  class EPD:
      def __init__(self):
          self.reset_pin = epdconfig.RST_PIN
          self.dc_pin = epdconfig.DC_PIN
          self.busy_pin = epdconfig.BUSY_PIN
          self.cs_pin = epdconfig.CS_PIN
          self.width = EPD_WIDTH
          self.height = EPD_HEIGHT
          self.GRAY1  = GRAY1 #white
          self.GRAY2  = GRAY2
          self.GRAY3  = GRAY3 #gray
          self.GRAY4  = GRAY4 #Blackest
  
      lut_4Gray_GC = [
          0x2A,0x06,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x28,0x06,0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x20,0x06,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x14,0x06,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x08,0x08,0x02,
          0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x22,0x22,0x22,0x22,0x22
      ]
  
      lut_1Gray_GC  = [
          0x2A,0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x05,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x2A,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x05,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x02,0x03,0x0A,0x00,0x02,0x06,0x0A,0x05,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x22,0x22,0x22,0x22,0x22
      ]
  
      lut_1Gray_DU  = [
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x01,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x0A,0x55,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x05,0x05,0x00,0x05,0x03,0x05,0x05,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x22,0x22,0x22,0x22,0x22
      ]
  
      lut_1Gray_A2  = [
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x03,0x05,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 
          0x22,0x22,0x22,0x22,0x22
      ]
          
      # Hardware reset
      def reset(self):
          epdconfig.digital_write(self.reset_pin, 1)
          epdconfig.delay_ms(200) 
          epdconfig.digital_write(self.reset_pin, 0)
          epdconfig.delay_ms(5)
          epdconfig.digital_write(self.reset_pin, 1)
          epdconfig.delay_ms(200)   
  
  
      def send_command(self, command):
          epdconfig.digital_write(self.dc_pin, 0)
          epdconfig.digital_write(self.cs_pin, 0)
          epdconfig.spi_writebyte([command])
          epdconfig.digital_write(self.cs_pin, 1)
  
  
      def send_data(self, data):
          epdconfig.digital_write(self.dc_pin, 1)
          epdconfig.digital_write(self.cs_pin, 0)
          epdconfig.spi_writebyte([data])
          epdconfig.digital_write(self.cs_pin, 1)
  
  
      def ReadBusy(self):
          logging.debug("e-Paper busy")
          while(epdconfig.digital_read(self.busy_pin) == 1):      #  0: idle, 1: busy
              epdconfig.delay_ms(10) 
          logging.debug("e-Paper busy release") 
  
  
      def init(self, mode):
          if (epdconfig.module_init() != 0):
              return -1
          # EPD hardware init start
          self.reset()
          
          self.send_command(0x12)
          epdconfig.delay_ms(300)
          
          self.send_command(0x46)
          self.send_data(0xF7)
          self.ReadBusy()
          self.send_command(0x47)
          self.send_data(0xF7)
          self.ReadBusy()
          
          self.send_command(0x01) # setting gaet number
          self.send_data(0xDF)
          self.send_data(0x01)
          self.send_data(0x00)
  
          self.send_command(0x03) # set gate voltage
          self.send_data(0x00)
  
          self.send_command(0x04) # set source voltage
          self.send_data(0x41)
          self.send_data(0xA8)
          self.send_data(0x32)
  
          self.send_command(0x11) # set data entry sequence
          self.send_data(0x03)
  
          self.send_command(0x3C) # set border 
          self.send_data(0x00)
          
          self.send_command(0x0C) # set booster strength
          self.send_data(0xAE)
          self.send_data(0xC7)
          self.send_data(0xC3)
          self.send_data(0xC0)
          self.send_data(0xC0)
  
          self.send_command(0x18) # set internal sensor on
          self.send_data(0x80)
           
          self.send_command(0x2C) # set vcom value
          self.send_data(0x44)
          
          if(mode == 0):   #4Gray
              self.send_command(0x37) # set display option, these setting turn on previous function
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)  
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)
              self.send_data(0x00)  
          elif(mode == 1):      #1Gray
              self.send_command(0x37) # set display option, these setting turn on previous function
              self.send_data(0x00)     #can switch 1 gray or 4 gray
              self.send_data(0xFF)
              self.send_data(0xFF)
              self.send_data(0xFF)
              self.send_data(0xFF)  
              self.send_data(0x4F)
              self.send_data(0xFF)
              self.send_data(0xFF)
              self.send_data(0xFF)
              self.send_data(0xFF)
          else:
              logging.debug("There is no such mode") 
  
          self.send_command(0x44) # setting X direction start/end position of RAM
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_data(0x17)
          self.send_data(0x01)
  
          self.send_command(0x45) # setting Y direction start/end position of RAM
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_data(0xDF)
          self.send_data(0x01)
  
          self.send_command(0x22) # Display Update Control 2
          self.send_data(0xCF)
          return 0
  
  
      def load_lut(self, lut):
          self.send_command(0x32)
          for i in range(0, 105):
              self.send_data(lut[i])
  
  
      def getbuffer(self, image):
          # logging.debug("bufsiz = ",int(self.width/8) * self.height)
          buf = [0xFF] * (int(self.width/8) * self.height)
          image_monocolor = image.convert('1')
          imwidth, imheight = image_monocolor.size
          pixels = image_monocolor.load()
          # logging.debug("imwidth = %d, imheight = %d",imwidth,imheight)
          if(imwidth == self.width and imheight == self.height):
              logging.debug("Vertical")
              for y in range(imheight):
                  for x in range(imwidth):
                      # Set the bits for the column of pixels at the current position.
                      if pixels[x, y] == 0:
                          buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
          elif(imwidth == self.height and imheight == self.width):
              logging.debug("Horizontal")
              for y in range(imheight):
                  for x in range(imwidth):
                      newx = y
                      newy = self.height - x - 1
                      if pixels[x, y] == 0:
                          buf[int((newx + newy*self.width) / 8)] &= ~(0x80 >> (y % 8))
          return buf
  
  
      def getbuffer_4Gray(self, image):
          # logging.debug("bufsiz = ",int(self.width/8) * self.height)
          buf = [0xFF] * (int(self.width / 4) * self.height)
          image_monocolor = image.convert('L')
          imwidth, imheight = image_monocolor.size
          pixels = image_monocolor.load()
          i=0
          # logging.debug("imwidth = %d, imheight = %d",imwidth,imheight)
          if(imwidth == self.width and imheight == self.height):
              logging.debug("Vertical")
              for y in range(imheight):
                  for x in range(imwidth):
                      # Set the bits for the column of pixels at the current position.
                      if(pixels[x, y] == 0xC0):
                          pixels[x, y] = 0x80
                      elif (pixels[x, y] == 0x80):
                          pixels[x, y] = 0x40
                      i = i + 1
                      if(i%4 == 0):
                          buf[int((x + (y * self.width))/4)] = ((pixels[x-3, y]&0xc0) | (pixels[x-2, y]&0xc0)>>2 | (pixels[x-1, y]&0xc0)>>4 | (pixels[x, y]&0xc0)>>6)
                          
          elif(imwidth == self.height and imheight == self.width):
              logging.debug("Horizontal")
              for x in range(imwidth):
                  for y in range(imheight):
                      newx = y
                      newy = imwidth - x - 1
                      if(pixels[x, y] == 0xC0):
                          pixels[x, y] = 0x80
                      elif (pixels[x, y] == 0x80):
                          pixels[x, y] = 0x40
                      i = i + 1
                      if(i%4 == 0):
                          buf[int((newx + (newy * self.width))/4)] = ((pixels[x, y-3]&0xc0) | (pixels[x, y-2]&0xc0)>>2 | (pixels[x, y-1]&0xc0)>>4 | (pixels[x, y]&0xc0)>>6) 
          return buf
  
  
      def display_4Gray(self, image):
          if (image == None):
              return            
  
          self.send_command(0x4E)
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_command(0x4F)
          self.send_data(0x00)
          self.send_data(0x00)
  
          self.send_command(0x24)
          for i in range(0, (int)(self.height*(self.width/8))):
              temp3=0
              for j in range(0, 2):
                  temp1 = image[i*2+j]
                  for k in range(0, 2):
                      temp2 = temp1&0xC0
                      if(temp2 == 0xC0):
                          temp3 |= 0x01           #white
                      elif(temp2 == 0x00):
                          temp3 |= 0x00           #black
                      elif(temp2 == 0x80):
                          temp3 |= 0x00           #gray1
                      else:                       #0x40
                          temp3 |= 0x01           #gray2
                      temp3 <<= 1
                      temp1 <<= 2
                      temp2 = temp1&0xC0 
                      if(temp2 == 0xC0):          #white
                          temp3 |= 0x01
                      elif(temp2 == 0x00):        #black
                          temp3 |= 0x00
                      elif(temp2 == 0x80):
                          temp3 |= 0x00           #gray1
                      else:                       #0x40
                          temp3 |= 0x01           #gray2
                      if(j!=1 or k!=1):
                          temp3 <<= 1
                      temp1 <<= 2
              self.send_data(temp3)
  
          self.send_command(0x4E)
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_command(0x4F)
          self.send_data(0x00)
          self.send_data(0x00)
  
          self.send_command(0x26)
          for i in range(0, (int)(self.height*(self.width/8))):
              temp3=0
              for j in range(0, 2):
                  temp1 = image[i*2+j]
                  for k in range(0, 2):
                      temp2 = temp1&0xC0
                      if(temp2 == 0xC0):
                          temp3 |= 0x01       #white
                      elif(temp2 == 0x00):
                          temp3 |= 0x00       #black
                      elif(temp2 == 0x80):
                          temp3 |= 0x01       #gray1
                      else:                   #0x40
                          temp3 |= 0x00       #gray2
                      temp3 <<= 1
                      temp1 <<= 2
                      temp2 = temp1&0xC0 
                      if(temp2 == 0xC0):      #white
                          temp3 |= 0x01
                      elif(temp2 == 0x00):    #black
                          temp3 |= 0x00
                      elif(temp2 == 0x80):
                          temp3 |= 0x01       #gray1
                      else:                   #0x40
                          temp3 |= 0x00       #gray2
                      if(j!=1 or k!=1):
                          temp3 <<= 1
                      temp1 <<= 2
              self.send_data(temp3)
  
          self.load_lut(self.lut_4Gray_GC)
          self.send_command(0x22)
          self.send_data(0xC7)
          self.send_command(0x20)
          self.ReadBusy()   
  
  
      def display_1Gray(self, image):
          if (image == None):
              return            
  
          self.send_command(0x4E)
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_command(0x4F)
          self.send_data(0x00)
          self.send_data(0x00)
  
          self.send_command(0x24)
          for j in range(0, self.height):
              for i in range(0, int(self.width / 8)):
                  self.send_data(image[i + j * int(self.width / 8)])   
  
          self.load_lut(self.lut_1Gray_A2)
          self.send_command(0x20)
          self.ReadBusy()   
          
  
      def Clear(self, color, mode):
          self.send_command(0x4E)
          self.send_data(0x00)
          self.send_data(0x00)
          self.send_command(0x4F)
          self.send_data(0x00)
          self.send_data(0x00)
  
          self.send_command(0x24)
          for j in range(0, self.height):
              for i in range(0, int(self.width / 8)):
                  self.send_data(0xff)   
  
          if(mode == 0):              #4Gray
              self.send_command(0x26)
              for j in range(0, self.height):
                  for i in range(0, int(self.width / 8)):
                      self.send_data(0xff) 
              self.load_lut(self.lut_4Gray_GC)
              self.send_command(0x22)
              self.send_data(0xC7)
          elif(mode == 1):            #1Gray
              self.load_lut(self.lut_1Gray_DU)
          else:
              logging.debug("There is no such mode") 
  
          self.send_command(0x20)
          self.ReadBusy()   
  
  
      def sleep(self):
          self.send_command(0X50) # DEEP_SLEEP_MODE
          self.send_data(0xf7)
          self.send_command(0X02) #power off
          self.send_command(0X07) #deep sleep
          self.send_data(0xA5)
  
      def Dev_exit(self):
          epdconfig.module_exit()
  
  ### END OF FILE ###
  
  