# ***************************************************************************** # * | File : epd2in7_V2.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2022-09-17 # # | 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 = 176 EPD_HEIGHT = 264 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.GRAY1 = GRAY1 #white self.GRAY2 = GRAY2 self.GRAY3 = GRAY3 #gray self.GRAY4 = GRAY4 #Blackest LUT_DATA_4Gray = [ 0x40,0x48,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x8,0x48,0x10,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x2,0x48,0x4,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x20,0x48,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0xA,0x19,0x0,0x3,0x8,0x0,0x0, 0x14,0x1,0x0,0x14,0x1,0x0,0x3, 0xA,0x3,0x0,0x8,0x19,0x0,0x0, 0x1,0x0,0x0,0x0,0x0,0x0,0x1, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x0,0x0,0x0,0x0,0x0,0x0,0x0, 0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0, 0x22,0x17,0x41,0x0,0x32,0x1C, ] # 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(2) 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): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 1): # 1: idle, 0: 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(0xC7) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def Lut(self): self.send_command(0x32) for i in range(159): self.send_data(self.LUT_DATA_4Gray[i]) 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(0x45) #set Ram-Y address start/end position self.send_data(0x00) self.send_data(0x00) self.send_data(0x07) #0x0107-->(263+1)=264 self.send_data(0x01) self.send_command(0x4F) # set RAM y address count to 0; self.send_data(0x00) self.send_data(0x00) self.send_command(0x11) # data entry mode self.send_data(0x03) return 0 def init_Fast(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(0x12) #SWRESET self.ReadBusy() self.send_command(0x18) #Read built-in temperature sensor self.send_data(0x80) self.send_command(0x22) # Load temperature value self.send_data(0xB1) self.send_command(0x20) self.ReadBusy() self.send_command(0x1A) # Write to temperature register self.send_data(0x64) self.send_data(0x00) self.send_command(0x45) #set Ram-Y address start/end position self.send_data(0x00) self.send_data(0x00) self.send_data(0x07) #0x0107-->(263+1)=264 self.send_data(0x01) self.send_command(0x4F) # set RAM y address count to 0; self.send_data(0x00) self.send_data(0x00) self.send_command(0x11) # data entry mode self.send_data(0x03) self.send_command(0x22) # Load temperature value self.send_data(0x91) self.send_command(0x20) self.ReadBusy() return 0 def Init_4Gray(self): if (epdconfig.module_init() != 0): return -1 self.reset() self.send_command(0x12) # soft reset self.ReadBusy(); self.send_command(0x74) #set analog block control self.send_data(0x54) self.send_command(0x7E) #set digital block control self.send_data(0x3B) self.send_command(0x01) #Driver output control self.send_data(0x07) self.send_data(0x01) self.send_data(0x00) self.send_command(0x11) #data entry mode self.send_data(0x03) self.send_command(0x44) #set Ram-X address start/end position self.send_data(0x00) self.send_data(0x15) #0x15-->(21+1)*8=176 self.send_command(0x45) #set Ram-Y address start/end position self.send_data(0x00) self.send_data(0x00) self.send_data(0x07) #0x0107-->(263+1)=264 self.send_data(0x01) self.send_command(0x3C) #BorderWavefrom self.send_data(0x00) self.send_command(0x2C) #VCOM Voltage self.send_data(self.LUT_DATA_4Gray[158]) #0x1C self.send_command(0x3F) #EOPQ self.send_data(self.LUT_DATA_4Gray[153]) self.send_command(0x03) #VGH self.send_data(self.LUT_DATA_4Gray[154]) self.send_command(0x04) # self.send_data(self.LUT_DATA_4Gray[155]) #VSH1 self.send_data(self.LUT_DATA_4Gray[156]) #VSH2 self.send_data(self.LUT_DATA_4Gray[157]) #VSL self.Lut() #LUT self.send_command(0x4E) # set RAM x address count to 0; self.send_data(0x00) self.send_command(0x4F) # set RAM y address count to 0X199; 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("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 = self.height - 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 Clear(self): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height self.send_command(0x24) for j in range(Height): for i in range(Width): self.send_data(0XFF) self.TurnOnDisplay() def display(self, image): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height self.send_command(0x24) for j in range(Height): for i in range(Width): self.send_data(image[i + j * Width]) self.TurnOnDisplay() def display_Fast(self, image): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height self.send_command(0x24) for j in range(Height): for i in range(Width): self.send_data(image[i + j * Width]) self.TurnOnDisplay_Fast() def display_Base(self, image): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height self.send_command(0x24) #Write Black and White image to RAM for j in range(Height): for i in range(Width): self.send_data(image[i + j * Width]) self.send_command(0x26) #Write Black and White image to RAM for j in range(Height): for i in range(Width): self.send_data(image[i + j * Width]) self.TurnOnDisplay() def display_Base_color(self, color): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height self.send_command(0x24) #Write Black and White image to RAM for j in range(Height): for i in range(Width): self.send_data(color) self.send_command(0x26) #Write Black and White image to RAM for j in range(Height): for i in range(Width): self.send_data(color) # self.TurnOnDisplay() def display_Partial(self, Image, Xstart, Ystart, Xend, Yend): if((Xstart % 8 + Xend % 8 == 8 & Xstart % 8 > Xend % 8) | Xstart % 8 + Xend % 8 == 0 | (Xend - Xstart)%8 == 0): Xstart = Xstart // 8 Xend = Xend // 8 else: Xstart = Xstart // 8 if Xend % 8 == 0: Xend = Xend // 8 else: Xend = Xend // 8 + 1 if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height Xend -= 1 Yend -= 1 # Reset self.reset() self.send_command(0x3C) #BorderWavefrom self.send_data(0x80) self.send_command(0x44) # set RAM x address start/end, in page 35 self.send_data(Xstart & 0xff) # RAM x address start at 00h; self.send_data(Xend & 0xff) # RAM x address end at 0fh(15+1)*8->128 self.send_command(0x45) # set RAM y address start/end, in page 35 self.send_data(Ystart & 0xff) # RAM y address start at 0127h; self.send_data((Ystart>>8) & 0x01) # RAM y address start at 0127h; self.send_data(Yend & 0xff) # RAM y address end at 00h; self.send_data((Yend>>8) & 0x01) self.send_command(0x4E) # set RAM x address count to 0; self.send_data(Xstart & 0xff) self.send_command(0x4F) # set RAM y address count to 0X127; self.send_data(Ystart & 0xff) self.send_data((Ystart>>8) & 0x01) self.send_command(0x24) #Write Black and White image to RAM for j in range(Height): for i in range(Width): if((j > Ystart-1) & (j < (Yend + 1)) & (i > Xstart-1) & (i < (Xend + 1))): self.send_data(Image[i + j * Width]) self.TurnOnDisplay_Partial() def display_4Gray(self, image): self.send_command(0x24) for i in range(0, 5808): #5808*4 46464 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 |= 0x00 elif(temp2 == 0x00): temp3 |= 0x01 elif(temp2 == 0x80): temp3 |= 0x01 else: #0x40 temp3 |= 0x00 temp3 <<= 1 temp1 <<= 2 temp2 = temp1&0xC0 if(temp2 == 0xC0): temp3 |= 0x00 elif(temp2 == 0x00): temp3 |= 0x01 elif(temp2 == 0x80): temp3 |= 0x01 else : #0x40 temp3 |= 0x00 if(j!=1 or k!=1): temp3 <<= 1 temp1 <<= 2 self.send_data(temp3) self.send_command(0x26) for i in range(0, 5808): #5808*4 46464 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 |= 0x00 elif(temp2 == 0x00): temp3 |= 0x01 elif(temp2 == 0x80): temp3 |= 0x00 else: #0x40 temp3 |= 0x01 temp3 <<= 1 temp1 <<= 2 temp2 = temp1&0xC0 if(temp2 == 0xC0): temp3 |= 0x00 elif(temp2 == 0x00): temp3 |= 0x01 elif(temp2 == 0x80): temp3 |= 0x00 else: #0x40 temp3 |= 0x01 if(j!=1 or k!=1): temp3 <<= 1 temp1 <<= 2 self.send_data(temp3) self.TurnOnDisplay_4GRAY() def sleep(self): self.send_command(0X10) self.send_data(0x01) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###