304 lines
11 KiB
Python
304 lines
11 KiB
Python
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# *****************************************************************************
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# * | File : epd2in9_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 : 2020-10-20
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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 = 128
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EPD_HEIGHT = 296
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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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WF_PARTIAL_2IN9 = [
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0x0,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x80,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x40,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0A,0x0,0x0,0x0,0x0,0x0,0x1,
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0x1,0x0,0x0,0x0,0x0,0x0,0x0,
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0x1,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,
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0x22,0x17,0x41,0xB0,0x32,0x36,
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]
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WS_20_30 = [
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0x80, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0,
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0x10, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0,
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0x80, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0,
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0x10, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x14, 0x8, 0x0, 0x0, 0x0, 0x0, 0x2,
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0xA, 0xA, 0x0, 0xA, 0xA, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x14, 0x8, 0x0, 0x1, 0x0, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x0, 0x0, 0x0,
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0x22, 0x17, 0x41, 0x0, 0x32, 0x36
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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(50)
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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(50)
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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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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(10)
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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_2
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self.send_data(0xc7)
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self.send_command(0x20) # MASTER_ACTIVATION
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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_2
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self.send_data(0x0F)
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self.send_command(0x20) # MASTER_ACTIVATION
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self.ReadBusy()
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def lut(self, lut):
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self.send_command(0x32)
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for i in range(0, 153):
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self.send_data(lut[i])
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self.ReadBusy()
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def SetLut(self, lut):
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self.lut(lut)
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self.send_command(0x3f)
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self.send_data(lut[153])
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self.send_command(0x03); # gate voltage
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self.send_data(lut[154])
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self.send_command(0x04); # source voltage
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self.send_data(lut[155]) # VSH
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self.send_data(lut[156]) # VSH2
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self.send_data(lut[157]) # VSL
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self.send_command(0x2c); # VCOM
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self.send_data(lut[158])
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def SetWindow(self, x_start, y_start, x_end, y_end):
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self.send_command(0x44) # SET_RAM_X_ADDRESS_START_END_POSITION
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# x point must be the multiple of 8 or the last 3 bits will be ignored
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self.send_data((x_start>>3) & 0xFF)
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self.send_data((x_end>>3) & 0xFF)
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self.send_command(0x45) # SET_RAM_Y_ADDRESS_START_END_POSITION
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self.send_data(y_start & 0xFF)
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self.send_data((y_start >> 8) & 0xFF)
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self.send_data(y_end & 0xFF)
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self.send_data((y_end >> 8) & 0xFF)
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def SetCursor(self, x, y):
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self.send_command(0x4E) # SET_RAM_X_ADDRESS_COUNTER
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# x point must be the multiple of 8 or the last 3 bits will be ignored
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self.send_data(x & 0xFF)
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self.send_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER
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self.send_data(y & 0xFF)
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self.send_data((y >> 8) & 0xFF)
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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(0x01) #Driver output control
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self.send_data(0x27)
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self.send_data(0x01)
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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(0x03)
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self.SetWindow(0, 0, self.width-1, self.height-1)
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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(0x80)
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self.SetCursor(0, 0)
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self.ReadBusy()
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self.SetLut(self.WS_20_30)
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# EPD hardware init end
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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("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] == 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("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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buf[int((newx + newy*self.width) / 8)] &= ~(0x80 >> (y % 8))
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return buf
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def display(self, image):
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if (image == None):
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return
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self.send_command(0x24) # WRITE_RAM
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for j in range(0, self.height):
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for i in range(0, int(self.width / 8)):
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self.send_data(image[i + j * int(self.width / 8)])
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self.TurnOnDisplay()
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def display_Base(self, image):
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if (image == None):
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return
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self.send_command(0x24) # WRITE_RAM
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for j in range(0, self.height):
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for i in range(0, int(self.width / 8)):
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self.send_data(image[i + j * int(self.width / 8)])
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self.send_command(0x26) # WRITE_RAM
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for j in range(0, self.height):
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for i in range(0, int(self.width / 8)):
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self.send_data(image[i + j * int(self.width / 8)])
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self.TurnOnDisplay()
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def display_Partial(self, image):
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if (image == None):
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return
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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(2)
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self.SetLut(self.WF_PARTIAL_2IN9)
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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(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_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(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.SetWindow(0, 0, self.width - 1, self.height - 1)
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self.SetCursor(0, 0)
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self.send_command(0x24) # WRITE_RAM
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for j in range(0, self.height):
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for i in range(0, int(self.width / 8)):
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self.send_data(image[i + j * int(self.width / 8)])
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self.TurnOnDisplay_Partial()
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def Clear(self, color):
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self.send_command(0x24) # WRITE_RAM
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for j in range(0, self.height):
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for i in range(0, int(self.width / 8)):
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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(0x10) # DEEP_SLEEP_MODE
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self.send_data(0x01)
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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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