# ***************************************************************************** # * | 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 = 960 EPD_HEIGHT = 680 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") busy = epdconfig.digital_read(self.busy_pin) while(busy == 1): busy = epdconfig.digital_read(self.busy_pin) epdconfig.delay_ms(20) epdconfig.delay_ms(20) logger.debug("e-Paper busy release") def TurnOnDisplay(self): self.send_command(0x22) #Display Update Control self.send_data(0xF7) self.send_command(0x20) #Activate Display Update Sequence self.ReadBusy() def init(self): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.ReadBusy() self.send_command(0x12) #SWRESET self.ReadBusy() self.send_command(0x0C) self.send_data(0xAE) self.send_data(0xC7) self.send_data(0xC3) self.send_data(0xC0) self.send_data(0x80) self.send_command(0x01) self.send_data(0xA7) self.send_data(0x02) self.send_data(0x00) self.send_command(0x11) # data entry mode self.send_data(0x03) # X-mode self.send_command(0x44) self.send_data(0x00) self.send_data(0x00) self.send_data(0xBF) self.send_data(0x03) self.send_command(0x45) self.send_data(0x00) self.send_data(0x00) self.send_data(0xA7) self.send_data(0x02) self.send_command(0x3C) # BorderWavefrom self.send_data(0x05) self.send_command(0x18) # use the internal temperature sensor self.send_data(0x80) self.send_command(0x4E) self.send_data(0x00) self.send_command(0x4F) self.send_data(0x00) self.send_data(0x00) # EPD hardware init end 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("Horizontal") 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("Vertical") 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, image): self.send_command(0x24) self.send_data2(image) self.TurnOnDisplay() def Clear(self): buf = [0xFF] * (int(self.width/8) * self.height) self.send_command(0x24) self.send_data2(buf) self.TurnOnDisplay() def sleep(self): self.send_command(0x10) # DEEP_SLEEP self.send_data(0x01) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###