# ***************************************************************************** # * | 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. # from machine import Pin, SPI import framebuf import utime # Display resolution EPD_WIDTH = 400 EPD_HEIGHT = 300 RST_PIN = 12 DC_PIN = 8 CS_PIN = 9 BUSY_PIN = 13 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 ] class EPD_4in2: def __init__(self): self.reset_pin = Pin(RST_PIN, Pin.OUT) self.busy_pin = Pin(BUSY_PIN, Pin.IN, Pin.PULL_UP) self.cs_pin = Pin(CS_PIN, Pin.OUT) self.width = EPD_WIDTH self.height = EPD_HEIGHT self.Seconds_1_5S = 0 self.Seconds_1S = 1 self.LUT_ALL = LUT_ALL self.black = 0x00 self.white = 0xff self.darkgray = 0xaa self.grayish = 0x55 self.spi = SPI(1) self.spi.init(baudrate=4000_000) self.dc_pin = Pin(DC_PIN, Pin.OUT) self.buffer_1Gray = bytearray(self.height * self.width // 8) self.buffer_4Gray = bytearray(self.height * self.width // 4) self.image1Gray = framebuf.FrameBuffer(self.buffer_1Gray, self.width, self.height, framebuf.MONO_HLSB) self.image4Gray = framebuf.FrameBuffer(self.buffer_4Gray, self.width, self.height, framebuf.GS2_HMSB) self.EPD_4IN2_V2_Init() self.EPD_4IN2_V2_Clear() utime.sleep_ms(500) def digital_write(self, pin, value): pin.value(value) def digital_read(self, pin): return pin.value() def delay_ms(self, delaytime): utime.sleep(delaytime / 1000.0) def spi_writebyte(self, data): self.spi.write(bytearray(data)) def module_exit(self): self.digital_write(self.reset_pin, 0) # Hardware reset def reset(self): self.digital_write(self.reset_pin, 1) self.delay_ms(20) self.digital_write(self.reset_pin, 0) self.delay_ms(2) self.digital_write(self.reset_pin, 1) self.delay_ms(20) self.digital_write(self.reset_pin, 0) self.delay_ms(2) self.digital_write(self.reset_pin, 1) self.delay_ms(20) self.digital_write(self.reset_pin, 0) self.delay_ms(2) self.digital_write(self.reset_pin, 1) self.delay_ms(20) def send_command(self, command): self.digital_write(self.dc_pin, 0) self.digital_write(self.cs_pin, 0) self.spi_writebyte([command]) self.digital_write(self.cs_pin, 1) def send_data(self, data): self.digital_write(self.dc_pin, 1) self.digital_write(self.cs_pin, 0) self.spi_writebyte([data]) self.digital_write(self.cs_pin, 1) def send_data1(self, buf): self.digital_write(self.dc_pin, 1) self.digital_write(self.cs_pin, 0) self.spi.write(bytearray(buf)) self.digital_write(self.cs_pin, 1) def ReadBusy(self): print("e-Paper busy") while(self.digital_read(self.busy_pin) == 1): # LOW: idle, HIGH: busy self.delay_ms(100) print("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 EPD_4IN2_V2_Init(self): # 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() def EPD_4IN2_V2_Init_Fast(self, mode): 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() 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 EPD_4IN2_V2_Init_4Gray(self): # 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() def EPD_4IN2_V2_Clear(self): high = self.height if( self.width % 8 == 0) : wide = self.width // 8 else : wide = self.width // 8 + 1 self.send_command(0x24) for i in range(0, wide): self.send_data1([0xff] * high) self.send_command(0x26) for i in range(0, wide): self.send_data1([0xff] * high) self.TurnOnDisplay() def EPD_4IN2_V2_Display(self,Image): self.send_command(0x24) self.send_data1(Image) self.send_command(0x26) self.send_data1(Image) self.TurnOnDisplay() def EPD_4IN2_V2_Display_Fast(self, image): self.send_command(0x24) self.send_data1(image) self.send_command(0x26) self.send_data1(image) self.TurnOnDisplay_Fast() def EPD_4IN2_V2_PartialDisplay(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_data1(Image) self.TurnOnDisplay_Partial() def EPD_4IN2_V2_4GrayDisplay(self,Image): self.send_command(0x24) for i in range(0, 15000): temp3=0 for j in range(0, 2): temp1 = Image[i*2+j] for k in range(0, 2): temp2 = temp1&0x03 if(temp2 == 0x03): temp3 |= 0x01 # white elif(temp2 == 0x00): temp3 |= 0x00 # black elif(temp2 == 0x02): temp3 |= 0x01 # gray1 else: # 0x01 temp3 |= 0x00 # gray2 temp3 <<= 1 temp1 >>= 2 temp2 = temp1&0x03 if(temp2 == 0x03): # white temp3 |= 0x01 elif(temp2 == 0x00): # black temp3 |= 0x00 elif(temp2 == 0x02): temp3 |= 0x01 # gray1 else: # 0x01 temp3 |= 0x00 # gray2 if (( j!=1 ) | ( k!=1 )): temp3 <<= 1 temp1 >>= 2 self.send_data(temp3) self.send_command(0x26) for i in range(0, 15000): temp3=0 for j in range(0, 2): temp1 = Image[i*2+j] for k in range(0, 2): temp2 = temp1&0x03 if(temp2 == 0x03): temp3 |= 0x01 # white elif(temp2 == 0x00): temp3 |= 0x00 # black elif(temp2 == 0x02): temp3 |= 0x00 # gray1 else: # 0x01 temp3 |= 0x01 # gray2 temp3 <<= 1 temp1 >>= 2 temp2 = temp1&0x03 if(temp2 == 0x03): # white temp3 |= 0x01 elif(temp2 == 0x00): # black temp3 |= 0x00 elif(temp2 == 0x02): temp3 |= 0x00 # gray1 else: # 0x01 temp3 |= 0x01 # gray2 if (( j!=1 ) | ( k!=1 )): temp3 <<= 1 temp1 >>= 2 self.send_data(temp3) self.TurnOnDisplay_4GRAY() def Sleep(self): self.send_command(0x10) # DEEP_SLEEP self.send_data(0x01) if __name__=='__main__': epd = EPD_4in2() epd.image1Gray.fill(0xff) epd.image4Gray.fill(0xff) print("Full brush") epd.EPD_4IN2_V2_Init() epd.image1Gray.text("Waveshare", 5, 10, epd.black) epd.image1Gray.text("Pico_ePaper-4.2", 5, 40, epd.black) epd.image1Gray.text("Raspberry Pico", 5, 70, epd.black) epd.EPD_4IN2_V2_Display(epd.buffer_1Gray) epd.delay_ms(2000) epd.image1Gray.vline(10, 90, 60, epd.black) epd.image1Gray.vline(90, 90, 60, epd.black) epd.image1Gray.hline(10, 90, 80, epd.black) epd.image1Gray.hline(10, 150, 80, epd.black) epd.image1Gray.line(10, 90, 90, 150, epd.black) epd.image1Gray.line(90, 90, 10, 150, epd.black) epd.EPD_4IN2_V2_Display(epd.buffer_1Gray) epd.delay_ms(2000) print("Quick refresh") epd.EPD_4IN2_V2_Init_Fast(epd.Seconds_1_5S) epd.image1Gray.rect(10, 180, 50, 80, epd.black) epd.image1Gray.fill_rect(70, 180, 50, 80, epd.black) epd.EPD_4IN2_V2_Display_Fast(epd.buffer_1Gray) epd.delay_ms(2000) print("partial refresh") for i in range(0, 10): print(str(i)) epd.image1Gray.fill_rect(60, 270, 10, 10, epd.white) epd.image1Gray.text(str(i), 62, 272, epd.black) epd.EPD_4IN2_V2_PartialDisplay(epd.buffer_1Gray) epd.delay_ms(500) print("Four grayscale refresh") epd.EPD_4IN2_V2_Init_4Gray() epd.image4Gray.fill_rect(150, 10, 250, 30, epd.black) epd.image4Gray.text('GRAY1 with black background',155, 21, epd.white) epd.image4Gray.text('GRAY2 with white background',155, 51, epd.grayish) epd.image4Gray.text('GRAY3 with white background',155, 81, epd.darkgray) epd.image4Gray.text('GRAY4 with white background',155, 111, epd.black) epd.EPD_4IN2_V2_4GrayDisplay(epd.buffer_4Gray) epd.delay_ms(5000) print("Clear") epd.EPD_4IN2_V2_Init() epd.EPD_4IN2_V2_Clear() print("Enter sleep mode ") epd.Sleep()