# ***************************************************************************** # * | File : epd1in54b.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 = 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 lut_vcom0 = [0x0E, 0x14, 0x01, 0x0A, 0x06, 0x04, 0x0A, 0x0A, 0x0F, 0x03, 0x03, 0x0C, 0x06, 0x0A, 0x00] lut_w = [0x0E, 0x14, 0x01, 0x0A, 0x46, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x86, 0x0A, 0x04] lut_b = [0x0E, 0x14, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x4A, 0x04] lut_g1 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04] lut_g2 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04] lut_vcom1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] lut_red0 = [0x83, 0x5D, 0x01, 0x81, 0x48, 0x23, 0x77, 0x77, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] lut_red1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # 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) def ReadBusy(self): logger.debug("e-Paper busy") while(epdconfig.digital_read(self.busy_pin) == 0): epdconfig.delay_ms(100) logger.debug("e-Paper busy release") def set_lut_bw(self): self.send_command(0x20) # vcom for count in range(0, 15): self.send_data(self.lut_vcom0[count]) self.send_command(0x21) # ww -- for count in range(0, 15): self.send_data(self.lut_w[count]) self.send_command(0x22) # bw r for count in range(0, 15): self.send_data(self.lut_b[count]) self.send_command(0x23) # wb w for count in range(0, 15): self.send_data(self.lut_g1[count]) self.send_command(0x24) # bb b for count in range(0, 15): self.send_data(self.lut_g2[count]) def set_lut_red(self): self.send_command(0x25) for count in range(0, 15): self.send_data(self.lut_vcom1[count]) self.send_command(0x26) for count in range(0, 15): self.send_data(self.lut_red0[count]) self.send_command(0x27) for count in range(0, 15): self.send_data(self.lut_red1[count]) def init(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.send_command(0x01) # POWER_SETTING self.send_data(0x07) self.send_data(0x00) self.send_data(0x08) self.send_data(0x00) self.send_command(0x06) # BOOSTER_SOFT_START self.send_data(0x07) self.send_data(0x07) self.send_data(0x07) self.send_command(0x04) # POWER_ON self.ReadBusy() self.send_command(0X00) # PANEL_SETTING self.send_data(0xCF) self.send_command(0X50) # VCOM_AND_DATA_INTERVAL_SETTING self.send_data(0x17) self.send_command(0x30) # PLL_CONTROL self.send_data(0x39) self.send_command(0x61) # TCON_RESOLUTION set x and y self.send_data(0xC8) self.send_data(0x00) self.send_data(0xC8) self.send_command(0x82) # VCM_DC_SETTING_REGISTER self.send_data(0x0E) self.set_lut_bw() self.set_lut_red() 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): # send black data if (blackimage != None): self.send_command(0x10) # DATA_START_TRANSMISSION_1 for i in range(0, int(self.width * self.height / 8)): temp = 0x00 for bit in range(0, 4): if (blackimage[i] & (0x80 >> bit) != 0): temp |= 0xC0 >> (bit * 2) self.send_data(temp) temp = 0x00 for bit in range(4, 8): if (blackimage[i] & (0x80 >> bit) != 0): temp |= 0xC0 >> ((bit - 4) * 2) self.send_data(temp) # send red data if (redimage != None): self.send_command(0x13) # DATA_START_TRANSMISSION_2 for i in range(0, int(self.width * self.height / 8)): self.send_data(redimage[i]) self.send_command(0x12) # DISPLAY_REFRESH self.ReadBusy() def Clear(self): self.send_command(0x10) # DATA_START_TRANSMISSION_1 for i in range(0, int(self.width * self.height / 8)): self.send_data(0xFF) self.send_data(0xFF) self.send_command(0x13) # DATA_START_TRANSMISSION_2 for i in range(0, int(self.width * self.height / 8)): self.send_data(0xFF) self.send_command(0x12) # DISPLAY_REFRESH self.ReadBusy() def sleep(self): self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING self.send_data(0x17) self.send_command(0x82) # to solve Vcom drop self.send_data(0x00) self.send_command(0x01) # power setting self.send_data(0x02) # gate switch to external self.send_data(0x00) self.send_data(0x00) self.send_data(0x00) self.ReadBusy() self.send_command(0x02) # power off epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###