520 lines
18 KiB
Python
520 lines
18 KiB
Python
# *****************************************************************************
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# * | File : epd2in7_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 : 2022-09-17
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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 = 176
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EPD_HEIGHT = 264
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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.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_DATA_4Gray = [
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0x40,0x48,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x8,0x48,0x10,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x2,0x48,0x4,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x20,0x48,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0xA,0x19,0x0,0x3,0x8,0x0,0x0,
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0x14,0x1,0x0,0x14,0x1,0x0,0x3,
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0xA,0x3,0x0,0x8,0x19,0x0,0x0,
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0x1,0x0,0x0,0x0,0x0,0x0,0x1,
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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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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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0x22,0x17,0x41,0x0,0x32,0x1C,
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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(2)
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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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def ReadBusy(self):
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logger.debug("e-Paper busy")
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while(epdconfig.digital_read(self.busy_pin) == 1): # 1: idle, 0: 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(0xC7)
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self.send_command(0x20) #Activate Display Update Sequence
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self.ReadBusy()
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def Lut(self):
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self.send_command(0x32)
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for i in range(159):
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self.send_data(self.LUT_DATA_4Gray[i])
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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(0x45) #set Ram-Y address start/end position
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x07) #0x0107-->(263+1)=264
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self.send_data(0x01)
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self.send_command(0x4F) # set RAM y address count to 0;
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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(0x03)
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return 0
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def init_Fast(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(0x12) #SWRESET
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self.ReadBusy()
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self.send_command(0x18) #Read built-in temperature sensor
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self.send_data(0x80)
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self.send_command(0x22) # Load temperature value
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self.send_data(0xB1)
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self.send_command(0x20)
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self.ReadBusy()
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self.send_command(0x1A) # Write to temperature register
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self.send_data(0x64)
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self.send_data(0x00)
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self.send_command(0x45) #set Ram-Y address start/end position
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x07) #0x0107-->(263+1)=264
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self.send_data(0x01)
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self.send_command(0x4F) # set RAM y address count to 0;
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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(0x03)
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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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return 0
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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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self.reset()
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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(0x07)
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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.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(0x15) #0x15-->(21+1)*8=176
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self.send_command(0x45) #set Ram-Y address start/end position
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x07) #0x0107-->(263+1)=264
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self.send_data(0x01)
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self.send_command(0x3C) #BorderWavefrom
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self.send_data(0x00)
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self.send_command(0x2C) #VCOM Voltage
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self.send_data(self.LUT_DATA_4Gray[158]) #0x1C
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self.send_command(0x3F) #EOPQ
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self.send_data(self.LUT_DATA_4Gray[153])
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self.send_command(0x03) #VGH
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self.send_data(self.LUT_DATA_4Gray[154])
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self.send_command(0x04) #
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self.send_data(self.LUT_DATA_4Gray[155]) #VSH1
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self.send_data(self.LUT_DATA_4Gray[156]) #VSH2
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self.send_data(self.LUT_DATA_4Gray[157]) #VSL
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self.Lut() #LUT
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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 0X199;
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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("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 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)] = ((pixels[x-3, y]&0xc0) | (pixels[x-2, y]&0xc0)>>2 | (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 = self.height - x - 1
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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)] = ((pixels[x, y-3]&0xc0) | (pixels[x, y-2]&0xc0)>>2 | (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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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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self.send_command(0x24)
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for j in range(Height):
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for i in range(Width):
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self.send_data(0XFF)
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self.TurnOnDisplay()
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def display(self, image):
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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self.send_command(0x24)
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for j in range(Height):
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for i in range(Width):
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self.send_data(image[i + j * Width])
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self.TurnOnDisplay()
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def display_Fast(self, image):
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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self.send_command(0x24)
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for j in range(Height):
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for i in range(Width):
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self.send_data(image[i + j * Width])
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self.TurnOnDisplay_Fast()
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def display_Base(self, image):
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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self.send_command(0x24) #Write Black and White image to RAM
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for j in range(Height):
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for i in range(Width):
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self.send_data(image[i + j * Width])
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self.send_command(0x26) #Write Black and White image to RAM
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for j in range(Height):
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for i in range(Width):
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self.send_data(image[i + j * Width])
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self.TurnOnDisplay()
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def display_Base_color(self, color):
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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self.send_command(0x24) #Write Black and White image to RAM
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for j in range(Height):
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for i in range(Width):
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self.send_data(color)
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self.send_command(0x26) #Write Black and White image to RAM
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for j in range(Height):
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for i in range(Width):
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self.send_data(color)
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# self.TurnOnDisplay()
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def display_Partial(self, Image, Xstart, Ystart, Xend, Yend):
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if((Xstart % 8 + Xend % 8 == 8 & Xstart % 8 > Xend % 8) | Xstart % 8 + Xend % 8 == 0 | (Xend - Xstart)%8 == 0):
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Xstart = Xstart // 8
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Xend = Xend // 8
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else:
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Xstart = Xstart // 8
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if Xend % 8 == 0:
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Xend = Xend // 8
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else:
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Xend = Xend // 8 + 1
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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Xend -= 1
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Yend -= 1
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# Reset
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self.reset()
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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) # set RAM x address start/end, in page 35
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self.send_data(Xstart & 0xff) # RAM x address start at 00h;
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self.send_data(Xend & 0xff) # RAM x address end at 0fh(15+1)*8->128
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self.send_command(0x45) # set RAM y address start/end, in page 35
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self.send_data(Ystart & 0xff) # RAM y address start at 0127h;
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self.send_data((Ystart>>8) & 0x01) # RAM y address start at 0127h;
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self.send_data(Yend & 0xff) # RAM y address end at 00h;
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self.send_data((Yend>>8) & 0x01)
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self.send_command(0x4E) # set RAM x address count to 0;
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self.send_data(Xstart & 0xff)
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self.send_command(0x4F) # set RAM y address count to 0X127;
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self.send_data(Ystart & 0xff)
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self.send_data((Ystart>>8) & 0x01)
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self.send_command(0x24) #Write Black and White image to RAM
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for j in range(Height):
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for i in range(Width):
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if((j > Ystart-1) & (j < (Yend + 1)) & (i > Xstart-1) & (i < (Xend + 1))):
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self.send_data(Image[i + j * Width])
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self.TurnOnDisplay_Partial()
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def display_4Gray(self, image):
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self.send_command(0x24)
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for i in range(0, 5808): #5808*4 46464
|
|
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 |= 0x00
|
|
elif(temp2 == 0x00):
|
|
temp3 |= 0x01
|
|
elif(temp2 == 0x80):
|
|
temp3 |= 0x01
|
|
else: #0x40
|
|
temp3 |= 0x00
|
|
temp3 <<= 1
|
|
|
|
temp1 <<= 2
|
|
temp2 = temp1&0xC0
|
|
if(temp2 == 0xC0):
|
|
temp3 |= 0x00
|
|
elif(temp2 == 0x00):
|
|
temp3 |= 0x01
|
|
elif(temp2 == 0x80):
|
|
temp3 |= 0x01
|
|
else : #0x40
|
|
temp3 |= 0x00
|
|
if(j!=1 or k!=1):
|
|
temp3 <<= 1
|
|
temp1 <<= 2
|
|
self.send_data(temp3)
|
|
|
|
self.send_command(0x26)
|
|
for i in range(0, 5808): #5808*4 46464
|
|
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 |= 0x00
|
|
elif(temp2 == 0x00):
|
|
temp3 |= 0x01
|
|
elif(temp2 == 0x80):
|
|
temp3 |= 0x00
|
|
else: #0x40
|
|
temp3 |= 0x01
|
|
temp3 <<= 1
|
|
|
|
temp1 <<= 2
|
|
temp2 = temp1&0xC0
|
|
if(temp2 == 0xC0):
|
|
temp3 |= 0x00
|
|
elif(temp2 == 0x00):
|
|
temp3 |= 0x01
|
|
elif(temp2 == 0x80):
|
|
temp3 |= 0x00
|
|
else: #0x40
|
|
temp3 |= 0x01
|
|
if(j!=1 or k!=1):
|
|
temp3 <<= 1
|
|
temp1 <<= 2
|
|
self.send_data(temp3)
|
|
|
|
self.TurnOnDisplay_4GRAY()
|
|
|
|
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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