# ***************************************************************************** # * | File : epd7in5.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V4.0 # * | Date : 2019-06-20 # # | 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 = 800 EPD_HEIGHT = 480 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(20) epdconfig.digital_write(self.reset_pin, 0) epdconfig.delay_ms(2) epdconfig.digital_write(self.reset_pin, 1) epdconfig.delay_ms(20) 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) def send_data2(self, data): epdconfig.digital_write(self.dc_pin, 1) epdconfig.digital_write(self.cs_pin, 0) epdconfig.SPI.writebytes2(data) epdconfig.digital_write(self.cs_pin, 1) def ReadBusy(self): logger.debug("e-Paper busy") self.send_command(0x71) busy = epdconfig.digital_read(self.busy_pin) while(busy == 0): self.send_command(0x71) busy = epdconfig.digital_read(self.busy_pin) epdconfig.delay_ms(20) logger.debug("e-Paper busy release") def init(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.send_command(0x06) # btst self.send_data(0x17) self.send_data(0x17) self.send_data(0x28) # If an exception is displayed, try using 0x38 self.send_data(0x17) self.send_command(0x01) #POWER SETTING self.send_data(0x07) self.send_data(0x07) #VGH=20V,VGL=-20V self.send_data(0x3f) #VDH=15V self.send_data(0x3f) #VDL=-15V self.send_command(0x04) #POWER ON epdconfig.delay_ms(100) self.ReadBusy() self.send_command(0X00) #PANNEL SETTING self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f self.send_command(0x61) #tres self.send_data(0x03) #source 800 self.send_data(0x20) self.send_data(0x01) #gate 480 self.send_data(0xE0) self.send_command(0X15) self.send_data(0x00) self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING self.send_data(0x10) self.send_data(0x07) self.send_command(0X60) #TCON SETTING self.send_data(0x22) # EPD hardware init end return 0 def init_fast(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.send_command(0X00) #PANNEL SETTING self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING self.send_data(0x10) self.send_data(0x07) self.send_command(0x04) #POWER ON epdconfig.delay_ms(100) self.ReadBusy() #waiting for the electronic paper IC to release the idle signal #Enhanced display drive(Add 0x06 command) self.send_command(0x06) #Booster Soft Start self.send_data (0x27) self.send_data (0x27) self.send_data (0x18) self.send_data (0x17) self.send_command(0xE0) self.send_data(0x02) self.send_command(0xE5) self.send_data(0x5A) # EPD hardware init end return 0 def init_part(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.send_command(0X00) #PANNEL SETTING self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f self.send_command(0x04) #POWER ON epdconfig.delay_ms(100) self.ReadBusy() #waiting for the electronic paper IC to release the idle signal self.send_command(0xE0) self.send_data(0x02) self.send_command(0xE5) self.send_data(0x6E) # EPD hardware init end return 0 def getbuffer(self, image): img = image imwidth, imheight = img.size if(imwidth == self.width and imheight == self.height): img = img.convert('1') elif(imwidth == self.height and imheight == self.width): # image has correct dimensions, but needs to be rotated img = img.rotate(90, expand=True).convert('1') else: logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height)) # return a blank buffer return [0x00] * (int(self.width/8) * self.height) buf = bytearray(img.tobytes('raw')) # The bytes need to be inverted, because in the PIL world 0=black and 1=white, but # in the e-paper world 0=white and 1=black. for i in range(len(buf)): buf[i] ^= 0xFF return buf def display(self, image): if(self.width % 8 == 0): Width = self.width // 8 else: Width = self.width // 8 +1 Height = self.height image1 = [0xFF] * int(self.width * self.height / 8) for j in range(Height): for i in range(Width): image1[i + j * Width] = ~image[i + j * Width] self.send_command(0x10) self.send_data2(image1) self.send_command(0x13) self.send_data2(image) self.send_command(0x12) epdconfig.delay_ms(100) self.ReadBusy() def Clear(self): self.send_command(0x10) self.send_data2([0xFF] * int(self.width * self.height / 8)) self.send_command(0x13) self.send_data2([0x00] * int(self.width * self.height / 8)) self.send_command(0x12) epdconfig.delay_ms(100) self.ReadBusy() 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 * 8 Xend = Xend // 8 * 8 else: Xstart = Xstart // 8 * 8 if Xend % 8 == 0: Xend = Xend // 8 * 8 else: Xend = Xend // 8 * 8 + 1 Width = (Xend - Xstart) // 8 Height = Yend - Ystart self.send_command(0x50) self.send_data(0xA9) self.send_data(0x07) self.send_command(0x91) #This command makes the display enter partial mode self.send_command(0x90) #resolution setting self.send_data (Xstart//256) self.send_data (Xstart%256) #x-start self.send_data ((Xend-1)//256) self.send_data ((Xend-1)%256) #x-end self.send_data (Ystart//256) # self.send_data (Ystart%256) #y-start self.send_data ((Yend-1)//256) self.send_data ((Yend-1)%256) #y-end self.send_data (0x01) image1 = [0xFF] * int(self.width * self.height / 8) for j in range(Height): for i in range(Width): image1[i + j * Width] = ~Image[i + j * Width] self.send_command(0x13) #Write Black and White image to RAM self.send_data2(image1) self.send_command(0x12) epdconfig.delay_ms(100) self.ReadBusy() def sleep(self): self.send_command(0x02) # POWER_OFF self.ReadBusy() self.send_command(0x07) # DEEP_SLEEP self.send_data(0XA5) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###