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- # *****************************************************************************
- # * | 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 = 880
- EPD_HEIGHT = 528
- 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(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 send_data2(self, data):
- epdconfig.digital_write(self.dc_pin, 1)
- epdconfig.digital_write(self.cs_pin, 0)
- epdconfig.spi_writebyte2(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(200)
-
- 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(0x46); # Auto Write Red RAM
- self.send_data(0xf7);
- self.ReadBusy();
- self.send_command(0x47); # Auto Write B/W RAM
- self.send_data(0xf7);
- self.ReadBusy();
- self.send_command(0x0C); # Soft start setting
- self.send_data2([0xAE, 0xC7, 0xC3, 0xC0, 0x40])
- self.send_command(0x01); # Set MUX as 527
- self.send_data2([0xAF, 0x02, 0x01])
- self.send_command(0x11); # Data entry mode
- self.send_data(0x01);
- self.send_command(0x44);
- self.send_data2([0x00, 0x00, 0x6F, 0x03]) # RAM x address start at 0
- self.send_command(0x45);
- self.send_data2([0xAF, 0x02, 0x00, 0x00])
- self.send_command(0x3C); # VBD
- self.send_data(0x05); # LUT1, for white
- self.send_command(0x18);
- self.send_data(0X80);
- self.send_command(0x22);
- self.send_data(0XB1); #Load Temperature and waveform setting.
- self.send_command(0x20);
- self.ReadBusy();
- self.send_command(0x4E); # set RAM x address count to 0;
- self.send_data2([0x00, 0x00])
- self.send_command(0x4F);
- self.send_data2([0x00, 0x00])
- # 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):
- 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 [0xff] * int(self.width * self.height / 8)
- buf = bytearray(img.tobytes('raw'))
- return buf
-
- def display(self, image):
- self.send_command(0x4F);
- self.send_data2([0x00, 0x00])
- self.send_command(0x24);
- self.send_data2(image)
- self.send_command(0x22);
- self.send_data(0xF7);#Load LUT from MCU(0x32)
- self.send_command(0x20);
- epdconfig.delay_ms(10);
- self.ReadBusy();
-
- def Clear(self):
- buf = [0xff] * int(self.width * self.height / 8)
- self.send_command(0x4F);
- self.send_data2([0x00, 0x00])
- self.send_command(0x24)
- self.send_data2(buf)
-
- self.send_command(0x26)
- self.send_data2(buf)
-
- self.send_command(0x22);
- self.send_data(0xF7);#Load LUT from MCU(0x32)
- self.send_command(0x20);
- epdconfig.delay_ms(10);
- self.ReadBusy();
- def sleep(self):
- self.send_command(0x10);
- self.send_data(0x01);
-
- epdconfig.delay_ms(2000)
- epdconfig.module_exit()
- ### END OF FILE ###
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