# ***************************************************************************** # * | File : epd4in2_V2.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2023-09-13 # # | 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 from PIL import Image import RPi.GPIO as GPIO # Display resolution EPD_WIDTH = 400 EPD_HEIGHT = 300 GRAY1 = 0xff # white GRAY2 = 0xC0 GRAY3 = 0x80 # gray GRAY4 = 0x00 # Blackest 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.Seconds_1_5S = 0 self.Seconds_1S = 1 self.GRAY1 = GRAY1 # white self.GRAY2 = GRAY2 self.GRAY3 = GRAY3 # gray self.GRAY4 = GRAY4 # Blackest LUT_ALL=[ 0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01, 0x05, 0x0A, 0x01, 0x0A, 0x01, 0x01, 0x01, 0x05, 0x08, 0x03, 0x02, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x03, 0x82, 0x84, 0x01, 0x01, 0x01, 0x84, 0x84, 0x82, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x0A, 0x1B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x83, 0x82, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x8A, 0x1B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x83, 0x02, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x8A, 0x9B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x03, 0x42, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x42, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x07, 0x17, 0x41, 0xA8, 0x32, 0x30 ] # Hardware reset def reset(self): epdconfig.digital_write(self.reset_pin, 1) epdconfig.delay_ms(100) epdconfig.digital_write(self.reset_pin, 0) epdconfig.delay_ms(2) epdconfig.digital_write(self.reset_pin, 1) epdconfig.delay_ms(100) 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(20) logger.debug("e-Paper busy release") def TurnOnDisplay(self): self.send_command(0x22) #Display Update Control self.send_data(0xF7) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def TurnOnDisplay_Fast(self): self.send_command(0x22) #Display Update Control self.send_data(0xC7) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def TurnOnDisplay_Partial(self): self.send_command(0x22) #Display Update Control self.send_data(0xFF) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def TurnOnDisplay_4GRAY(self): self.send_command(0x22) #Display Update Control self.send_data(0xCF) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def init(self): if epdconfig.module_init() != 0: return -1 # EPD hardware init start self.reset() self.ReadBusy() self.send_command(0x12) #SWRESET self.ReadBusy() self.send_command(0x21) # Display update control self.send_data(0x40) self.send_data(0x00) self.send_command(0x3C) # BorderWavefrom self.send_data(0x05) self.send_command(0x11) # data entry mode self.send_data(0x03) # X-mode self.send_command(0x44) self.send_data(0x00) self.send_data(0x31) self.send_command(0x45) self.send_data(0x00) self.send_data(0x00) self.send_data(0x2B) self.send_data(0x01) self.send_command(0x4E) self.send_data(0x00) self.send_command(0x4F) self.send_data(0x00) self.send_data(0x00) self.ReadBusy() return 0 def init_fast(self, mode): if epdconfig.module_init() != 0: return -1 # EPD hardware init start self.reset() self.ReadBusy() self.send_command(0x12) #SWRESET self.ReadBusy() self.send_command(0x21) # Display update control self.send_data(0x40) self.send_data(0x00) self.send_command(0x3C) # BorderWavefrom self.send_data(0x05) if mode == self.Seconds_1_5S: self.send_command(0x1A) self.send_data(0x6E) else : self.send_command(0x1A) self.send_data(0x5A) self.send_command(0x22) # Load temperature value self.send_data(0x91) self.send_command(0x20) self.ReadBusy() self.send_command(0x11) # data entry mode self.send_data(0x03) # X-mode self.send_command(0x44) self.send_data(0x00) self.send_data(0x31) self.send_command(0x45) self.send_data(0x00) self.send_data(0x00) self.send_data(0x2B) self.send_data(0x01) self.send_command(0x4E) self.send_data(0x00) self.send_command(0x4F) self.send_data(0x00) self.send_data(0x00) self.ReadBusy() return 0 def Lut(self): self.send_command(0x32) for i in range(227): self.send_data(self.LUT_ALL[i]) self.send_command(0x3F) self.send_data(self.LUT_ALL[227]) self.send_command(0x03) self.send_data(self.LUT_ALL[228]) self.send_command(0x04) self.send_data(self.LUT_ALL[229]) self.send_data(self.LUT_ALL[230]) self.send_data(self.LUT_ALL[231]) self.send_command(0x2c) self.send_data(self.LUT_ALL[232]) def Init_4Gray(self): if epdconfig.module_init() != 0: return -1 # EPD hardware init start self.reset() self.ReadBusy() self.send_command(0x12) #SWRESET self.ReadBusy() self.send_command(0x21) # Display update control self.send_data(0x00) self.send_data(0x00) self.send_command(0x3C) # BorderWavefrom self.send_data(0x03) self.send_command(0x0C) # BTST self.send_data(0x8B) # 8B self.send_data(0x9C) # 9C self.send_data(0xA4) # 96 A4 self.send_data(0x0F) # 0F self.Lut() self.send_command(0x11) # data entry mode self.send_data(0x03) # X-mode self.send_command(0x44) self.send_data(0x00) self.send_data(0x31) self.send_command(0x45) self.send_data(0x00) self.send_data(0x00) self.send_data(0x2B) self.send_data(0x01) self.send_command(0x4E) self.send_data(0x00) self.send_command(0x4F) self.send_data(0x00) self.send_data(0x00) self.ReadBusy() return 0 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("Horizontal") 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("Vertical") 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 = x 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 Clear(self): 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)) self.send_command(0x26) self.send_data2([0xff] * int(self.height * linewidth)) self.TurnOnDisplay() def display(self, image): self.send_command(0x24) self.send_data2(image) self.send_command(0x26) self.send_data2(image) self.TurnOnDisplay() def display_Fast(self, image): self.send_command(0x24) self.send_data2(image) self.send_command(0x26) self.send_data2(image) self.TurnOnDisplay_Fast() def display_Partial(self, Image): self.send_command(0x3C) # BorderWavefrom self.send_data(0x80) self.send_command(0x21) # Display update control self.send_data(0x00) self.send_data(0x00) self.send_command(0x3C) # BorderWavefrom self.send_data(0x80) self.send_command(0x44) self.send_data(0x00) self.send_data(0x31) self.send_command(0x45) self.send_data(0x00) self.send_data(0x00) self.send_data(0x2B) self.send_data(0x01) self.send_command(0x4E) self.send_data(0x00) self.send_command(0x4F) self.send_data(0x00) self.send_data(0x00) self.send_command(0x24) # WRITE_RAM self.send_data2(Image) self.TurnOnDisplay_Partial() def display_4Gray(self, image): 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(EPD_WIDTH * EPD_HEIGHT / 8)): # EPD_WIDTH * EPD_HEIGHT / 4 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(0x26) for i in range(0, int(EPD_WIDTH * EPD_HEIGHT / 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.TurnOnDisplay_4GRAY() # pass def sleep(self): self.send_command(0x10) # DEEP_SLEEP self.send_data(0x01) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###