# ***************************************************************************** # * | File : epd1in54b.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V4.1 # * | Date : 2022-08-10 # # | 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 = 200 EPD_HEIGHT = 200 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) # module reset epdconfig.delay_ms(5) 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): epdconfig.delay_ms(100) logger.debug("e-Paper busy release") 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(0x01) #Driver output control self.send_data(0xC7) self.send_data(0x00) self.send_data(0x01) self.send_command(0x11) #data entry mode self.send_data(0x01) self.send_command(0x44) #set Ram-X address start/end position self.send_data(0x00) self.send_data(0x18) #0x18-->(24+1)*8=200 self.send_command(0x45) #set Ram-Y address start/end position self.send_data(0xC7) #0xC7-->(199+1)=200 self.send_data(0x00) self.send_data(0x00) self.send_data(0x00) self.send_command(0x3C) #BorderWavefrom self.send_data(0x05) 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(0xC7) self.send_data(0x00) self.ReadBusy() return 0 def getbuffer(self, image): buf = [0xFF] * int(self.width * self.height / 8) # Set buffer to value of Python Imaging Library image. # Image must be in mode 1. image_monocolor = image.convert('1') imwidth, imheight = image_monocolor.size if imwidth != self.width or imheight != self.height: raise ValueError('Image must be same dimensions as display \ ({0}x{1}).' .format(self.width, self.height)) pixels = image_monocolor.load() for y in range(self.height): for x in range(self.width): # 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)) return buf def display(self, blackimage, redimage): if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 buf = [0x00] * self.height * linewidth # send black data if (blackimage != None): self.send_command(0x24) # DATA_START_TRANSMISSION_1 self.send_data2(blackimage) # send red data if (redimage != None): self.send_command(0x26) # DATA_START_TRANSMISSION_2 for i in range(0, int(self.width * self.height / 8)): buf[i] = ~redimage[i] self.send_data2(buf) self.send_command(0x22) # DISPLAY_REFRESH self.send_data(0xF7) self.send_command(0x20) # DISPLAY_REFRESH self.ReadBusy() def Clear(self): if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 self.send_command(0x24) # DATA_START_TRANSMISSION_1 self.send_data2([0xff] * int(self.height * linewidth)) self.send_command(0x26) # DATA_START_TRANSMISSION_2 self.send_data2([0x00] * int(self.height * linewidth)) self.send_command(0x22) # DISPLAY_REFRESH self.send_data(0xF7) self.send_command(0x20) # DISPLAY_REFRESH self.ReadBusy() def sleep(self): self.send_command(0x10) #enter deep sleep self.send_data(0x01) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###