#!/usr/bin/python # -*- coding:utf-8 -*- # ***************************************************************************** # * | File : epd4in01f.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.1 # * | 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 = 640 EPD_HEIGHT = 400 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.BLACK = 0x000000 # 0000 BGR self.WHITE = 0xffffff # 0001 self.GREEN = 0x00ff00 # 0010 self.BLUE = 0xff0000 # 0011 self.RED = 0x0000ff # 0100 self.YELLOW = 0x00ffff # 0101 self.ORANGE = 0x0080ff # 0110 # 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 ReadBusyHigh(self): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy epdconfig.delay_ms(10) logger.debug("e-Paper busy release") def ReadBusyLow(self): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy epdconfig.delay_ms(10) logger.debug("e-Paper busy release") def init(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.ReadBusyHigh() self.send_command(0x00) self.send_data(0x2f) self.send_data(0x00) self.send_command(0x01) self.send_data(0x37) self.send_data(0x00) self.send_data(0x05) self.send_data(0x05) self.send_command(0x03) self.send_data(0x00) self.send_command(0x06) self.send_data(0xC7) self.send_data(0xC7) self.send_data(0x1D) self.send_command(0x41) self.send_data(0x00) self.send_command(0x50) self.send_data(0x37) self.send_command(0x60) self.send_data(0x22) self.send_command(0x61) self.send_data(0x02) self.send_data(0x80) self.send_data(0x01) self.send_data(0x90) self.send_command(0xE3) self.send_data(0xAA) # EPD hardware init end return 0 def getbuffer(self, image): buf = [0x00] * int(self.width * self.height / 2) image_monocolor = image.convert('RGB')#Picture mode conversion 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): for y in range(imheight): for x in range(imwidth): # Set the bits for the column of pixels at the current position. Add = int((x + y * self.width) / 2) Color = 0; if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): Color = 0 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255): Color = 1 elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0): Color = 2 elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255): Color = 3 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): Color = 4 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0): Color = 5 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0): Color = 6 data_t = buf[Add]&(~(0xF0 >> ((x % 2)*4))) buf[Add] = data_t | ((Color << 4) >> ((x % 2)*4)); elif(imwidth == self.height and imheight == self.width): for y in range(imheight): for x in range(imwidth): newx = y newy = self.height - x - 1 Add = int((newx + newy*self.width) / 2) Color = 0; if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): Color = 0 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255): Color = 1 elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0): Color = 2 elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255): Color = 3 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): Color = 4 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0): Color = 5 elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0): Color = 6 data_t = buf[Add]&(~(0xF0 >> ((newx % 2)*4))) buf[Add] = data_t | ((Color << 4) >> ((newx % 2)*4)); return buf def display(self,image): self.send_command(0x61)#Set Resolution setting self.send_data(0x02) self.send_data(0x80) self.send_data(0x01) self.send_data(0x90) self.send_command(0x10) self.send_data2(image) self.send_command(0x04)#0x04 self.ReadBusyHigh() self.send_command(0x12)#0x12 self.ReadBusyHigh() self.send_command(0x02) #0x02 self.ReadBusyLow() # epdconfig.delay_ms(500) def Clear(self): self.send_command(0x61)#Set Resolution setting self.send_data(0x02) self.send_data(0x80) self.send_data(0x01) self.send_data(0x90) self.send_command(0x10) self.send_data2([0x11] * int(EPD_HEIGHT) * int(EPD_WIDTH/2)) #BLACK 0x00 /// 0000 #WHITE 0x11 /// 0001 #GREEN 0x22 /// 0010 #BLUE 0x33 /// 0011 #RED 0x44 /// 0100 #YELLOW 0x55 /// 0101 #ORANGE 0x66 /// 0110 #CLEAN 0x77 /// 0111 unavailable Afterimage self.send_command(0x04)#0x04 self.ReadBusyHigh() self.send_command(0x12)#0x12 self.ReadBusyHigh() self.send_command(0x02) #0x02 self.ReadBusyLow() # epdconfig.delay_ms(500) def sleep(self): # epdconfig.delay_ms(500) self.send_command(0x07) # DEEP_SLEEP self.send_data(0XA5) epdconfig.delay_ms(2000) epdconfig.module_exit()