317 lines
11 KiB
Python
317 lines
11 KiB
Python
# *****************************************************************************
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# * | File : epd2in13_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: V4.0
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# * | Date : 2019-06-20
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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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# Display resolution
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EPD_WIDTH = 122
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EPD_HEIGHT = 250
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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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FULL_UPDATE = 0
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PART_UPDATE = 1
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lut_full_update= [
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0x80,0x60,0x40,0x00,0x00,0x00,0x00, #LUT0: BB: VS 0 ~7
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0x10,0x60,0x20,0x00,0x00,0x00,0x00, #LUT1: BW: VS 0 ~7
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0x80,0x60,0x40,0x00,0x00,0x00,0x00, #LUT2: WB: VS 0 ~7
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0x10,0x60,0x20,0x00,0x00,0x00,0x00, #LUT3: WW: VS 0 ~7
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0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT4: VCOM: VS 0 ~7
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0x03,0x03,0x00,0x00,0x02, # TP0 A~D RP0
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0x09,0x09,0x00,0x00,0x02, # TP1 A~D RP1
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0x03,0x03,0x00,0x00,0x02, # TP2 A~D RP2
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0x00,0x00,0x00,0x00,0x00, # TP3 A~D RP3
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0x00,0x00,0x00,0x00,0x00, # TP4 A~D RP4
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0x00,0x00,0x00,0x00,0x00, # TP5 A~D RP5
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0x00,0x00,0x00,0x00,0x00, # TP6 A~D RP6
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0x15,0x41,0xA8,0x32,0x30,0x0A,
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]
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lut_partial_update = [ #20 bytes
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0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT0: BB: VS 0 ~7
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0x80,0x00,0x00,0x00,0x00,0x00,0x00, #LUT1: BW: VS 0 ~7
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0x40,0x00,0x00,0x00,0x00,0x00,0x00, #LUT2: WB: VS 0 ~7
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0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT3: WW: VS 0 ~7
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0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT4: VCOM: VS 0 ~7
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0x0A,0x00,0x00,0x00,0x00, # TP0 A~D RP0
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0x00,0x00,0x00,0x00,0x00, # TP1 A~D RP1
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0x00,0x00,0x00,0x00,0x00, # TP2 A~D RP2
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0x00,0x00,0x00,0x00,0x00, # TP3 A~D RP3
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0x00,0x00,0x00,0x00,0x00, # TP4 A~D RP4
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0x00,0x00,0x00,0x00,0x00, # TP5 A~D RP5
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0x00,0x00,0x00,0x00,0x00, # TP6 A~D RP6
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0x15,0x41,0xA8,0x32,0x30,0x0A,
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]
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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(200)
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epdconfig.digital_write(self.reset_pin, 0)
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epdconfig.delay_ms(5)
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(200)
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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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while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
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epdconfig.delay_ms(100)
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def TurnOnDisplay(self):
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self.send_command(0x22)
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self.send_data(0xC7)
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self.send_command(0x20)
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self.ReadBusy()
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def TurnOnDisplayPart(self):
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self.send_command(0x22)
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self.send_data(0x0c)
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self.send_command(0x20)
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self.ReadBusy()
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def init(self, update):
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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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if(update == self.FULL_UPDATE):
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self.ReadBusy()
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self.send_command(0x12) # soft reset
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self.ReadBusy()
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self.send_command(0x74) #set analog block control
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self.send_data(0x54)
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self.send_command(0x7E) #set digital block control
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self.send_data(0x3B)
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self.send_command(0x01) #Driver output control
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self.send_data(0xF9)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_command(0x11) #data entry mode
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self.send_data(0x01)
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self.send_command(0x44) #set Ram-X address start/end position
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self.send_data(0x00)
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self.send_data(0x0F) #0x0C-->(15+1)*8=128
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self.send_command(0x45) #set Ram-Y address start/end position
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self.send_data(0xF9) #0xF9-->(249+1)=250
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self.send_data(0x00)
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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(0x2C) #VCOM Voltage
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self.send_data(0x55) #
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self.send_command(0x03)
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self.send_data(self.lut_full_update[70])
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self.send_command(0x04) #
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self.send_data(self.lut_full_update[71])
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self.send_data(self.lut_full_update[72])
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self.send_data(self.lut_full_update[73])
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self.send_command(0x3A) #Dummy Line
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self.send_data(self.lut_full_update[74])
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self.send_command(0x3B) #Gate time
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self.send_data(self.lut_full_update[75])
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self.send_command(0x32)
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for count in range(70):
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self.send_data(self.lut_full_update[count])
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self.send_command(0x4E) # set RAM x address count to 0
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self.send_data(0x00)
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self.send_command(0x4F) # set RAM y address count to 0X127
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self.send_data(0xF9)
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self.send_data(0x00)
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self.ReadBusy()
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else:
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self.send_command(0x2C) #VCOM Voltage
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self.send_data(0x26)
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self.ReadBusy()
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self.send_command(0x32)
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for count in range(70):
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self.send_data(self.lut_partial_update[count])
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self.send_command(0x37)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x40)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_command(0x22)
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self.send_data(0xC0)
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self.send_command(0x20)
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self.ReadBusy()
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self.send_command(0x3C) #BorderWavefrom
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self.send_data(0x01)
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return 0
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def getbuffer(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 = [0xFF] * (linewidth * 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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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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if pixels[x, y] == 0:
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x = imwidth - x
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buf[int(x / 8) + y * linewidth] &= ~(0x80 >> (x % 8))
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elif(imwidth == self.height and imheight == self.width):
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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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newx = y
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newy = self.height - x - 1
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if pixels[x, y] == 0:
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newy = imwidth - newy - 1
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buf[int(newx / 8) + newy*linewidth] &= ~(0x80 >> (y % 8))
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return buf
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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.TurnOnDisplay()
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def displayPartial(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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for j in range(0, self.height):
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for i in range(0, linewidth):
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buf[i + j * linewidth] = ~image[i + j * linewidth]
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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(buf)
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self.TurnOnDisplayPart()
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def displayPartBaseImage(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 Clear(self, color=0xFF):
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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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# logger.debug(linewidth)
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buf = [0x00] * self.height * linewidth
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for j in range(0, self.height):
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for i in range(0, linewidth):
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buf[i + j * linewidth] = color
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self.send_command(0x24)
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self.send_data2(buf)
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# self.send_command(0x26)
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# for j in range(0, self.height):
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# for i in range(0, linewidth):
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# self.send_data(color)
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self.TurnOnDisplay()
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def sleep(self):
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# self.send_command(0x22) #POWER OFF
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# self.send_data(0xC3)
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# self.send_command(0x20)
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self.send_command(0x10) #enter deep sleep
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self.send_data(0x03)
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epdconfig.delay_ms(2000)
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epdconfig.module_exit()
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### END OF FILE ###
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