""" * | 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 inkycal.display.drivers 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 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 ###