# ***************************************************************************** # * | File : epd5in79b.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2024-03-05 # # | 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 = 792 EPD_HEIGHT = 272 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 # 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(1) 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(200) logger.debug("e-Paper busy release") def TurnOnDisplay(self): self.send_command(0x22) self.send_data(0xF7) # 24s # 0xD7 16s Probability refresh bad, probability damage ink screen self.send_command(0x20) # DISPLAY REFRESH epdconfig.delay_ms(100) # The delay here is necessary, 200uS at least!!! self.ReadBusy() # waiting for the electronic paper IC to release the idle signal def init(self): if (epdconfig.module_init() != 0): return -1 self.reset() self.ReadBusy() # waiting for the electronic paper IC to release the idle signal self.send_command(0x12) # POWER ON self.ReadBusy() # waiting for the electronic paper IC to release the idle signal self.send_command(0x11) self.send_data(0x01) self.send_command(0x44) # Set Ram X- address Start / End position self.send_data(0x00) # XStart, POR = 00h self.send_data(0x31) # 400/8-1 self.send_command(0x45) # Set Ram Y- address Start / End position self.send_data(0x0f) self.send_data(0x01) # 300-1 self.send_data(0x00) # YEnd L self.send_data(0x00) # YEnd H self.send_command(0x4e) self.send_data(0x00) self.send_command(0x4f) self.send_data(0x0f) self.send_data(0x01) self.send_command(0x91) self.send_data(0x00) self.send_command(0xC4) # Set Ram X- address Start / End position self.send_data(0x31) # XStart, POR = 00h self.send_data(0x00) # 400/8-1 self.send_command(0xC5) # Set Ram Y- address Start / End position self.send_data(0x0f) self.send_data(0x01) # 300-1 self.send_data(0x00) # YEnd L self.send_data(0x00) # YEnd H self.send_command(0xCe) self.send_data(0x31) self.send_command(0xCf) self.send_data(0x0f) self.send_data(0x01) 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 display(self, imageblack, imagered): buf = [0x00] * int(self.width * self.height / 8) for i in range(0, int(self.width * self.height / 8)): buf[i] = ~imagered[i] Width =int(self.width / 16)+1 Width1 =int(self.width / 8) Height = self.height self.send_command(0x24) for i in range(Height): self.send_data2(imageblack[i * Width1 : i * Width1+Width]) self.send_command(0X26) for i in range(self.height): self.send_data2(buf[i * Width1 : i * Width1+Width]) self.send_command(0xA4) for i in range(self.height): self.send_data2(imageblack[i * Width1 + Width - 1 : i * Width1 + Width * 2 - 1]) self.send_command(0xA6) for i in range(self.height): self.send_data2(buf[i * Width1 + Width - 1 : i * Width1 + Width * 2 - 1]) self.TurnOnDisplay() def Clear(self): self.send_command(0x24) self.send_data2([0xFF] * 13600) self.send_command(0X26) self.send_data2([0x00] * 13600) self.send_command(0xA4) self.send_data2([0xFF] * 13600) self.send_command(0xA6) self.send_data2([0x00] * 13600) self.TurnOnDisplay() def sleep(self): self.send_command(0X10) # deep sleep self.send_data(0x03) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###