531 lines
18 KiB
Python
531 lines
18 KiB
Python
# *****************************************************************************
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# * | File : epd4in2_V2.py
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# * | Author : Waveshare team
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# * | Function : Electronic paper driver
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# * | Info :
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# *----------------
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# * | This version: V1.0
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# * | Date : 2023-09-13
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# # | Info : python demo
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# -----------------------------------------------------------------------------
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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import logging
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from . import epdconfig
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from PIL import Image
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import RPi.GPIO as GPIO
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# Display resolution
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EPD_WIDTH = 400
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EPD_HEIGHT = 300
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GRAY1 = 0xff # white
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GRAY2 = 0xC0
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GRAY3 = 0x80 # gray
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GRAY4 = 0x00 # Blackest
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logger = logging.getLogger(__name__)
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class EPD:
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def __init__(self):
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self.reset_pin = epdconfig.RST_PIN
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self.dc_pin = epdconfig.DC_PIN
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self.busy_pin = epdconfig.BUSY_PIN
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self.cs_pin = epdconfig.CS_PIN
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self.width = EPD_WIDTH
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self.height = EPD_HEIGHT
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self.Seconds_1_5S = 0
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self.Seconds_1S = 1
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self.GRAY1 = GRAY1 # white
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self.GRAY2 = GRAY2
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self.GRAY3 = GRAY3 # gray
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self.GRAY4 = GRAY4 # Blackest
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LUT_ALL=[ 0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01,
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0x05, 0x0A, 0x01, 0x0A, 0x01, 0x01, 0x01,
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0x05, 0x08, 0x03, 0x02, 0x04, 0x01, 0x01,
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0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01,
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0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
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0x05, 0x48, 0x03, 0x82, 0x84, 0x01, 0x01,
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0x01, 0x84, 0x84, 0x82, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x0A, 0x1B, 0x8F, 0x03, 0x01, 0x01,
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0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
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0x05, 0x48, 0x83, 0x82, 0x04, 0x01, 0x01,
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0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x8A, 0x1B, 0x8F, 0x03, 0x01, 0x01,
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0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
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0x05, 0x48, 0x83, 0x02, 0x04, 0x01, 0x01,
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0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x8A, 0x9B, 0x8F, 0x03, 0x01, 0x01,
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0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
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0x05, 0x48, 0x03, 0x42, 0x04, 0x01, 0x01,
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0x01, 0x04, 0x04, 0x42, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x02, 0x00, 0x00, 0x07, 0x17, 0x41, 0xA8,
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0x32, 0x30 ]
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# Hardware reset
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def reset(self):
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(100)
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epdconfig.digital_write(self.reset_pin, 0)
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epdconfig.delay_ms(2)
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(100)
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def send_command(self, command):
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epdconfig.digital_write(self.dc_pin, 0)
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epdconfig.digital_write(self.cs_pin, 0)
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epdconfig.spi_writebyte([command])
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epdconfig.digital_write(self.cs_pin, 1)
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def send_data(self, data):
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epdconfig.digital_write(self.dc_pin, 1)
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epdconfig.digital_write(self.cs_pin, 0)
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epdconfig.spi_writebyte([data])
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epdconfig.digital_write(self.cs_pin, 1)
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# send a lot of data
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def send_data2(self, data):
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epdconfig.digital_write(self.dc_pin, 1)
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epdconfig.digital_write(self.cs_pin, 0)
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epdconfig.spi_writebyte2(data)
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epdconfig.digital_write(self.cs_pin, 1)
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def ReadBusy(self):
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logger.debug("e-Paper busy")
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while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
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epdconfig.delay_ms(20)
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logger.debug("e-Paper busy release")
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def TurnOnDisplay(self):
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self.send_command(0x22) #Display Update Control
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self.send_data(0xF7)
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self.send_command(0x20) #Activate Display Update Sequence
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self.ReadBusy()
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def TurnOnDisplay_Fast(self):
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self.send_command(0x22) #Display Update Control
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self.send_data(0xC7)
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self.send_command(0x20) #Activate Display Update Sequence
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self.ReadBusy()
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def TurnOnDisplay_Partial(self):
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self.send_command(0x22) #Display Update Control
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self.send_data(0xFF)
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self.send_command(0x20) #Activate Display Update Sequence
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self.ReadBusy()
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def TurnOnDisplay_4GRAY(self):
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self.send_command(0x22) #Display Update Control
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self.send_data(0xCF)
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self.send_command(0x20) #Activate Display Update Sequence
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self.ReadBusy()
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def init(self):
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if epdconfig.module_init() != 0:
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return -1
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# EPD hardware init start
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self.reset()
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self.ReadBusy()
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self.send_command(0x12) #SWRESET
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self.ReadBusy()
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self.send_command(0x21) # Display update control
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self.send_data(0x40)
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self.send_data(0x00)
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self.send_command(0x3C) # BorderWavefrom
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self.send_data(0x05)
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self.send_command(0x11) # data entry mode
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self.send_data(0x03) # X-mode
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self.send_command(0x44)
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self.send_data(0x00)
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self.send_data(0x31)
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self.send_command(0x45)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x2B)
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self.send_data(0x01)
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self.send_command(0x4E)
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self.send_data(0x00)
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self.send_command(0x4F)
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self.send_data(0x00)
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self.send_data(0x00)
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self.ReadBusy()
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return 0
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def init_fast(self, mode):
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if epdconfig.module_init() != 0:
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return -1
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# EPD hardware init start
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self.reset()
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self.ReadBusy()
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self.send_command(0x12) #SWRESET
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self.ReadBusy()
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self.send_command(0x21) # Display update control
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self.send_data(0x40)
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self.send_data(0x00)
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self.send_command(0x3C) # BorderWavefrom
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self.send_data(0x05)
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if mode == self.Seconds_1_5S:
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self.send_command(0x1A)
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self.send_data(0x6E)
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else :
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self.send_command(0x1A)
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self.send_data(0x5A)
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self.send_command(0x22) # Load temperature value
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self.send_data(0x91)
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self.send_command(0x20)
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self.ReadBusy()
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self.send_command(0x11) # data entry mode
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self.send_data(0x03) # X-mode
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self.send_command(0x44)
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self.send_data(0x00)
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self.send_data(0x31)
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self.send_command(0x45)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x2B)
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self.send_data(0x01)
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self.send_command(0x4E)
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self.send_data(0x00)
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self.send_command(0x4F)
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self.send_data(0x00)
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self.send_data(0x00)
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self.ReadBusy()
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return 0
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def Lut(self):
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self.send_command(0x32)
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for i in range(227):
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self.send_data(self.LUT_ALL[i])
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self.send_command(0x3F)
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self.send_data(self.LUT_ALL[227])
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self.send_command(0x03)
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self.send_data(self.LUT_ALL[228])
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self.send_command(0x04)
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self.send_data(self.LUT_ALL[229])
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self.send_data(self.LUT_ALL[230])
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self.send_data(self.LUT_ALL[231])
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self.send_command(0x2c)
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self.send_data(self.LUT_ALL[232])
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def Init_4Gray(self):
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if epdconfig.module_init() != 0:
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return -1
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# EPD hardware init start
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self.reset()
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self.ReadBusy()
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self.send_command(0x12) #SWRESET
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self.ReadBusy()
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self.send_command(0x21) # Display update control
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_command(0x3C) # BorderWavefrom
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self.send_data(0x03)
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self.send_command(0x0C) # BTST
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self.send_data(0x8B) # 8B
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self.send_data(0x9C) # 9C
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self.send_data(0xA4) # 96 A4
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self.send_data(0x0F) # 0F
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self.Lut()
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self.send_command(0x11) # data entry mode
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self.send_data(0x03) # X-mode
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self.send_command(0x44)
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self.send_data(0x00)
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self.send_data(0x31)
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self.send_command(0x45)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x2B)
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self.send_data(0x01)
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self.send_command(0x4E)
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self.send_data(0x00)
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self.send_command(0x4F)
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self.send_data(0x00)
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self.send_data(0x00)
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self.ReadBusy()
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return 0
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def getbuffer(self, image):
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# logger.debug("bufsiz = ",int(self.width/8) * self.height)
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buf = [0xFF] * (int(self.width / 8) * self.height)
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image_monocolor = image.convert('1')
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imwidth, imheight = image_monocolor.size
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pixels = image_monocolor.load()
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# logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
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if imwidth == self.width and imheight == self.height:
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logger.debug("Horizontal")
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for y in range(imheight):
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for x in range(imwidth):
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# Set the bits for the column of pixels at the current position.
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if pixels[x, y] == 0:
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buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
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elif imwidth == self.height and imheight == self.width:
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logger.debug("Vertical")
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for y in range(imheight):
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for x in range(imwidth):
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newx = y
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newy = self.height - x - 1
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if pixels[x, y] == 0:
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buf[int((newx + newy * self.width) / 8)] &= ~(0x80 >> (y % 8))
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return buf
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def getbuffer_4Gray(self, image):
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# logger.debug("bufsiz = ",int(self.width/8) * self.height)
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buf = [0xFF] * (int(self.width / 4) * self.height)
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image_monocolor = image.convert('L')
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imwidth, imheight = image_monocolor.size
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pixels = image_monocolor.load()
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i = 0
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# logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
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if imwidth == self.width and imheight == self.height:
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logger.debug("Vertical")
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for y in range(imheight):
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for x in range(imwidth):
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# Set the bits for the column of pixels at the current position.
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if pixels[x, y] == 0xC0:
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pixels[x, y] = 0x80
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elif pixels[x, y] == 0x80:
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pixels[x, y] = 0x40
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i = i + 1
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if i % 4 == 0:
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buf[int((x + (y * self.width)) / 4)] = (
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(pixels[x - 3, y] & 0xc0) | (pixels[x - 2, y] & 0xc0) >> 2 | (
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pixels[x - 1, y] & 0xc0) >> 4 | (pixels[x, y] & 0xc0) >> 6)
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elif imwidth == self.height and imheight == self.width:
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logger.debug("Horizontal")
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for x in range(imwidth):
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for y in range(imheight):
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newx = y
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newy = x
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if pixels[x, y] == 0xC0:
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pixels[x, y] = 0x80
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elif pixels[x, y] == 0x80:
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pixels[x, y] = 0x40
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i = i + 1
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if i % 4 == 0:
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buf[int((newx + (newy * self.width)) / 4)] = (
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(pixels[x, y - 3] & 0xc0) | (pixels[x, y - 2] & 0xc0) >> 2 | (
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pixels[x, y - 1] & 0xc0) >> 4 | (pixels[x, y] & 0xc0) >> 6)
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return buf
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def Clear(self):
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if self.width % 8 == 0:
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linewidth = int(self.width / 8)
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else:
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linewidth = int(self.width / 8) + 1
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self.send_command(0x24)
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self.send_data2([0xff] * int(self.height * linewidth))
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self.send_command(0x26)
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self.send_data2([0xff] * int(self.height * linewidth))
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self.TurnOnDisplay()
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def display(self, image):
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self.send_command(0x24)
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self.send_data2(image)
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self.send_command(0x26)
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self.send_data2(image)
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self.TurnOnDisplay()
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def display_Fast(self, image):
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self.send_command(0x24)
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self.send_data2(image)
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self.send_command(0x26)
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self.send_data2(image)
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self.TurnOnDisplay_Fast()
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def display_Partial(self, Image):
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self.send_command(0x3C) # BorderWavefrom
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self.send_data(0x80)
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self.send_command(0x21) # Display update control
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_command(0x3C) # BorderWavefrom
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self.send_data(0x80)
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self.send_command(0x44)
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self.send_data(0x00)
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self.send_data(0x31)
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self.send_command(0x45)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x2B)
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self.send_data(0x01)
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self.send_command(0x4E)
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self.send_data(0x00)
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self.send_command(0x4F)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_command(0x24) # WRITE_RAM
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self.send_data2(Image)
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self.TurnOnDisplay_Partial()
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def display_4Gray(self, image):
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if self.width % 8 == 0:
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linewidth = int(self.width / 8)
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else:
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linewidth = int(self.width / 8) + 1
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buf = [0x00] * self.height * linewidth
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self.send_command(0x24)
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for i in range(0, int(EPD_WIDTH * EPD_HEIGHT / 8)): # EPD_WIDTH * EPD_HEIGHT / 4
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temp3 = 0
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for j in range(0, 2):
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temp1 = image[i * 2 + j]
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for k in range(0, 2):
|
|
temp2 = temp1 & 0xC0
|
|
if temp2 == 0xC0:
|
|
temp3 |= 0x01 # white
|
|
elif temp2 == 0x00:
|
|
temp3 |= 0x00 # black
|
|
elif temp2 == 0x80:
|
|
temp3 |= 0x00 # gray1
|
|
else: # 0x40
|
|
temp3 |= 0x01 # gray2
|
|
temp3 <<= 1
|
|
|
|
temp1 <<= 2
|
|
temp2 = temp1 & 0xC0
|
|
if temp2 == 0xC0: # white
|
|
temp3 |= 0x01
|
|
elif temp2 == 0x00: # black
|
|
temp3 |= 0x00
|
|
elif temp2 == 0x80:
|
|
temp3 |= 0x00 # gray1
|
|
else: # 0x40
|
|
temp3 |= 0x01 # gray2
|
|
if j != 1 or k != 1:
|
|
temp3 <<= 1
|
|
temp1 <<= 2
|
|
buf[i] = temp3
|
|
self.send_data2(buf)
|
|
|
|
self.send_command(0x26)
|
|
for i in range(0, int(EPD_WIDTH * EPD_HEIGHT / 8)):
|
|
temp3 = 0
|
|
for j in range(0, 2):
|
|
temp1 = image[i * 2 + j]
|
|
for k in range(0, 2):
|
|
temp2 = temp1 & 0xC0
|
|
if temp2 == 0xC0:
|
|
temp3 |= 0x01 # white
|
|
elif temp2 == 0x00:
|
|
temp3 |= 0x00 # black
|
|
elif temp2 == 0x80:
|
|
temp3 |= 0x01 # gray1
|
|
else: # 0x40
|
|
temp3 |= 0x00 # gray2
|
|
temp3 <<= 1
|
|
|
|
temp1 <<= 2
|
|
temp2 = temp1 & 0xC0
|
|
if temp2 == 0xC0: # white
|
|
temp3 |= 0x01
|
|
elif temp2 == 0x00: # black
|
|
temp3 |= 0x00
|
|
elif temp2 == 0x80:
|
|
temp3 |= 0x01 # gray1
|
|
else: # 0x40
|
|
temp3 |= 0x00 # gray2
|
|
if j != 1 or k != 1:
|
|
temp3 <<= 1
|
|
temp1 <<= 2
|
|
buf[i] = temp3
|
|
self.send_data2(buf)
|
|
|
|
self.TurnOnDisplay_4GRAY()
|
|
# pass
|
|
|
|
def sleep(self):
|
|
self.send_command(0x10) # DEEP_SLEEP
|
|
self.send_data(0x01)
|
|
|
|
epdconfig.delay_ms(2000)
|
|
epdconfig.module_exit()
|
|
|
|
### END OF FILE ###
|