# ***************************************************************************** # * | 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 Voltage_Frame_7IN5_V2 = [ 0x6, 0x3F, 0x3F, 0x11, 0x24, 0x7, 0x17, ] LUT_VCOM_7IN5_V2 = [ 0x0, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0xF, 0x1, 0xF, 0x1, 0x2, 0x0, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ] LUT_WW_7IN5_V2 = [ 0x10, 0xF, 0xF, 0x0, 0x0, 0x1, 0x84, 0xF, 0x1, 0xF, 0x1, 0x2, 0x20, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ] LUT_BW_7IN5_V2 = [ 0x10, 0xF, 0xF, 0x0, 0x0, 0x1, 0x84, 0xF, 0x1, 0xF, 0x1, 0x2, 0x20, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ] LUT_WB_7IN5_V2 = [ 0x80, 0xF, 0xF, 0x0, 0x0, 0x1, 0x84, 0xF, 0x1, 0xF, 0x1, 0x2, 0x40, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ] LUT_BB_7IN5_V2 = [ 0x80, 0xF, 0xF, 0x0, 0x0, 0x1, 0x84, 0xF, 0x1, 0xF, 0x1, 0x2, 0x40, 0xF, 0xF, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ] # 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 SetLut(self, lut_vcom, lut_ww, lut_bw, lut_wb, lut_bb): self.send_command(0x20) for count in range(0, 42): self.send_data(lut_vcom[count]) self.send_command(0x21) for count in range(0, 42): self.send_data(lut_ww[count]) self.send_command(0x22) for count in range(0, 42): self.send_data(lut_bw[count]) self.send_command(0x23) for count in range(0, 42): self.send_data(lut_wb[count]) self.send_command(0x24) for count in range(0, 42): self.send_data(lut_bb[count]) 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(0x01); # power setting self.send_data(0x17); # 1-0=11: internal power self.send_data(self.Voltage_Frame_7IN5_V2[6]); # VGH&VGL self.send_data(self.Voltage_Frame_7IN5_V2[1]); # VSH self.send_data(self.Voltage_Frame_7IN5_V2[2]); # VSL self.send_data(self.Voltage_Frame_7IN5_V2[3]); # VSHR self.send_command(0x82); # VCOM DC Setting self.send_data(self.Voltage_Frame_7IN5_V2[4]); # VCOM self.send_command(0x06); # Booster Setting self.send_data(0x27); self.send_data(0x27); self.send_data(0x2F); self.send_data(0x17); self.send_command(0x30); # OSC Setting self.send_data(self.Voltage_Frame_7IN5_V2[0]); # 2-0=100: N=4 ; 5-3=111: M=7 ; 3C=50Hz 3A=100HZ self.send_command(0x04) #POWER ON epdconfig.delay_ms(100) self.ReadBusy() self.send_command(0X00) #PANNEL SETTING self.send_data(0x3F) #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) self.send_command(0x65); # Resolution setting self.send_data(0x00); self.send_data(0x00); # 800*480 self.send_data(0x00); self.send_data(0x00); self.SetLut(self.LUT_VCOM_7IN5_V2, self.LUT_WW_7IN5_V2, self.LUT_BW_7IN5_V2, self.LUT_WB_7IN5_V2, self.LUT_BB_7IN5_V2) # 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): self.send_command(0x13) self.send_data2(image) self.send_command(0x12) epdconfig.delay_ms(100) self.ReadBusy() def Clear(self): buf = [0x00] * (int(self.width/8) * self.height) self.send_command(0x10) self.send_data2(buf) self.send_command(0x13) self.send_data2(buf) 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 ###