# ***************************************************************************** # * | File : epd3in7.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.1 # * | Date : 2022-08-10 # # | 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 black GRAY4 = 0x00 #black logger = logging.getLogger(__name__) 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) # send a lot of data def send_data2(self, data): epdconfig.digital_write(self.dc_pin, 1) epdconfig.digital_write(self.cs_pin, 0) epdconfig.spi_writebyte2(data) epdconfig.digital_write(self.cs_pin, 1) def ReadBusy(self): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy epdconfig.delay_ms(10) logger.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(0x03) 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: logger.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) self.send_data2(lut) def getbuffer(self, image): # logger.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() # logger.debug("imwidth = %d, imheight = %d",imwidth,imheight) if(imwidth == self.width and imheight == self.height): logger.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): logger.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): # logger.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 # logger.debug("imwidth = %d, imheight = %d",imwidth,imheight) if(imwidth == self.width and imheight == self.height): logger.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): logger.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) if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 buf = [0x00] * self.height * linewidth 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 buf[i] = temp3 self.send_data2(buf) 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 buf[i] = temp3 self.send_data2(buf) 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) self.send_data2(image) 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) if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 self.send_command(0x24) self.send_data2([0xff] * int(self.height * linewidth)) if(mode == 0): #4Gray self.send_command(0x26) self.send_data2([0xff] * int(self.height * linewidth)) 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: logger.debug("There is no such mode") self.send_command(0x20) self.ReadBusy() def sleep(self): self.send_command(0X10) #deep sleep self.send_data(0x03) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###