# ***************************************************************************** # * | File : Pico_ePaper-2.13-B_V4.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2022-08-22 # # | 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 EPD_WIDTH = 128 EPD_HEIGHT = 296 SCK_PIN = 10 DIN_PIN = 11 RST_PIN = 12 DC_PIN = 8 CS_PIN = 9 BUSY_PIN = 13 class EPD_2in9_B_V4_Portrait: 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) if EPD_WIDTH % 8 == 0: self.width = EPD_WIDTH else : self.width = (EPD_WIDTH // 8) * 8 + 8 self.height = EPD_HEIGHT self.spi = SPI(1,baudrate=4000_000,sck=Pin(SCK_PIN),mosi=Pin(DIN_PIN)) self.dc_pin = Pin(DC_PIN, Pin.OUT) self.buffer_balck = bytearray(self.height * self.width // 8) self.buffer_red = bytearray(self.height * self.width // 8) self.imageblack = framebuf.FrameBuffer(self.buffer_balck, self.width, self.height, framebuf.MONO_HLSB) self.imagered = framebuf.FrameBuffer(self.buffer_red, self.width, self.height, framebuf.MONO_HLSB) self.init() 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(50) self.digital_write(self.reset_pin, 0) self.delay_ms(2) self.digital_write(self.reset_pin, 1) self.delay_ms(50) 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('busy') while(self.digital_read(self.busy_pin) == 1): self.delay_ms(10) print('busy release') self.delay_ms(20) 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_Base(self): self.send_command(0x22) #Display Update Control self.send_data(0xF4) 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(0x1C) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def init(self): # EPD hardware init start self.reset() self.ReadBusy() self.send_command(0x12) #SWRESET self.ReadBusy() self.send_command(0x01) #Driver output control self.send_data((self.height-1)%256) self.send_data((self.height-1)//256) 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(self.width//8-1) self.send_command(0x45) #set Ram-Y address start/end position self.send_data(0x00) self.send_data(0x00) self.send_data((self.height-1)%256) self.send_data((self.height-1)//256) self.send_command(0x3C) #BorderWavefrom self.send_data(0x05) self.send_command(0x21) # Display update control self.send_data(0x00) self.send_data(0x80) self.send_command(0x18) #Read built-in temperature sensor self.send_data(0x80) 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 init_Fast(self): # EPD hardware init start self.reset() 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(0x5a) # 90 self.send_data(0x00) self.send_command(0x22) # Load temperature value self.send_data(0x91) self.send_command(0x20) self.ReadBusy() self.send_command(0x01) #Driver output control self.send_data((self.height-1)%256) self.send_data((self.height-1)//256) 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(self.width//8-1) self.send_command(0x45) #set Ram-Y address start/end position self.send_data(0x00) self.send_data(0x00) self.send_data((self.height-1)%256) self.send_data((self.height-1)//256) 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 display(self): # ryimage: red or yellow image self.send_command(0x24) self.send_data1(self.buffer_balck) self.send_command(0x26) self.send_data1(self.buffer_red) self.TurnOnDisplay() def display_Fast(self): # ryimage: red or yellow image self.send_command(0x24) self.send_data1(self.buffer_balck) self.send_command(0x26) self.send_data1(self.buffer_red) self.TurnOnDisplay_Fast() def Clear(self): self.send_command(0x24) self.send_data1([0xFF] * self.height * int(self.width / 8)) self.send_command(0x26) self.send_data1([0x00] * self.height * int(self.width / 8)) 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 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 sleep(self): self.send_command(0x10) self.send_data(0x01) self.delay_ms(2000) self.module_exit() if __name__=='__main__': epd = EPD_2in9_B_V4_Portrait() epd.Clear() epd.imageblack.fill(0xff) epd.imagered.fill(0x00) epd.imageblack.text("Waveshare", 0, 10, 0x00) epd.imagered.text("ePaper-2.9-B-V4", 0, 25, 0xff) epd.imageblack.text("RPi Pico", 0, 40, 0x00) epd.imagered.text("Hello World", 0, 55, 0xff) epd.display() epd.delay_ms(2000) epd.imagered.vline(10, 90, 40, 0xff) epd.imagered.vline(90, 90, 40, 0xff) epd.imageblack.hline(10, 90, 80, 0x00) epd.imageblack.hline(10, 130, 80, 0x00) epd.imagered.line(10, 90, 90, 130, 0xff) epd.imageblack.line(90, 90, 10, 130, 0x00) epd.display() epd.delay_ms(2000) epd.init_Fast epd.imageblack.rect(10, 150, 40, 40, 0x00) epd.imagered.fill_rect(60, 150, 40, 40, 0xff) epd.display_Fast() epd.delay_ms(2000) epd.init() epd.Clear() epd.delay_ms(2000) print("sleep") epd.sleep()