# ***************************************************************************** # * | File : epd2in7b.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 = 176 EPD_HEIGHT = 264 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 lut_vcom_dc = [ 0x00, 0x00, 0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 ] lut_ww = [ 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 ] # R22H r lut_bw = [ 0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0xB0, 0x04, 0x10, 0x00, 0x00, 0x05, 0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0xC0, 0x23, 0x00, 0x00, 0x00, 0x01 ] # R23H w lut_bb = [ 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 ] # R24H b lut_wb = [ 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 ] # 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(2) 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) def ReadBusy(self): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy epdconfig.delay_ms(100) logger.debug("e-Paper busy release") def set_lut(self): self.send_command(0x20) # vcom for count in range(0, 44): self.send_data(self.lut_vcom_dc[count]) self.send_command(0x21) # ww -- for count in range(0, 42): self.send_data(self.lut_ww[count]) self.send_command(0x22) # bw r for count in range(0, 42): self.send_data(self.lut_bw[count]) self.send_command(0x23) # wb w for count in range(0, 42): self.send_data(self.lut_bb[count]) self.send_command(0x24) # bb b for count in range(0, 42): self.send_data(self.lut_wb[count]) def init(self): if (epdconfig.module_init() != 0): return -1 self.reset() self.send_command(0x04) # POWER_ON self.ReadBusy() self.send_command(0x00) # PANEL_SETTING self.send_data(0xaf) #KW-BF KWR-AF BWROTP 0f self.send_command(0x30) # PLL_CONTROL self.send_data(0x3a) #3A 100HZ 29 150Hz 39 200HZ 31 171HZ self.send_command(0x01) # POWER_SETTING self.send_data(0x03) # VDS_EN, VDG_EN self.send_data(0x00) # VCOM_HV, VGHL_LV[1], VGHL_LV[0] self.send_data(0x2b) # VDH self.send_data(0x2b) # VDL self.send_data(0x09) # VDHR self.send_command(0x06) # BOOSTER_SOFT_START self.send_data(0x07) self.send_data(0x07) self.send_data(0x17) # Power optimization self.send_command(0xF8) self.send_data(0x60) self.send_data(0xA5) # Power optimization self.send_command(0xF8) self.send_data(0x89) self.send_data(0xA5) # Power optimization self.send_command(0xF8) self.send_data(0x90) self.send_data(0x00) # Power optimization self.send_command(0xF8) self.send_data(0x93) self.send_data(0x2A) # Power optimization self.send_command(0xF8) self.send_data(0x73) self.send_data(0x41) self.send_command(0x82) # VCM_DC_SETTING_REGISTER self.send_data(0x12) self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING self.send_data(0x87) # define by OTP self.set_lut() self.send_command(0x16) # PARTIAL_DISPLAY_REFRESH self.send_data(0x00) 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): self.send_command(0x10) for i in range(0, int(self.width * self.height / 8)): self.send_data(~imageblack[i]) self.send_command(0x11) self.send_command(0x13) for i in range(0, int(self.width * self.height / 8)): self.send_data(~imagered[i]) self.send_command(0x11) self.send_command(0x12) self.ReadBusy() def Clear(self, color=0x00): self.send_command(0x10) for i in range(0, int(self.width * self.height / 8)): self.send_data(color) self.send_command(0x11) self.send_command(0x13) for i in range(0, int(self.width * self.height / 8)): self.send_data(color) self.send_command(0x11) self.send_command(0x12) self.ReadBusy() def sleep(self): self.send_command(0X50) self.send_data(0xf7) self.send_command(0X02) self.send_command(0X07) self.send_data(0xA5) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###