wavesharelib/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd2in7_V2.py

# *****************************************************************************
# * | File        :	  epd2in7_V2.py
# * | Author      :   Waveshare team
# * | Function    :   Electronic paper driver
# * | Info        :
# *----------------
# * | This version:   V1.0
# * | Date        :   2022-09-17
# # | Info        :   python demo
# -----------------------------------------------------------------------------
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to  whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#

import logging
from . import epdconfig

# Display resolution
EPD_WIDTH       = 176
EPD_HEIGHT      = 264

GRAY1  = 0xff #white
GRAY2  = 0xC0
GRAY3  = 0x80 #gray
GRAY4  = 0x00 #Blackest

logger = logging.getLogger(__name__)

class EPD:
    def __init__(self):
        self.reset_pin = epdconfig.RST_PIN
        self.dc_pin = epdconfig.DC_PIN
        self.busy_pin = epdconfig.BUSY_PIN
        self.cs_pin = epdconfig.CS_PIN
        self.width = EPD_WIDTH
        self.height = EPD_HEIGHT
        self.GRAY1  = GRAY1 #white
        self.GRAY2  = GRAY2
        self.GRAY3  = GRAY3 #gray
        self.GRAY4  = GRAY4 #Blackest

    LUT_DATA_4Gray = [
        0x40,0x48,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
        0x8,0x48,0x10,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
        0x2,0x48,0x4,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
        0x20,0x48,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
        0xA,0x19,0x0,0x3,0x8,0x0,0x0,					
        0x14,0x1,0x0,0x14,0x1,0x0,0x3,					
        0xA,0x3,0x0,0x8,0x19,0x0,0x0,					
        0x1,0x0,0x0,0x0,0x0,0x0,0x1,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x0,0x0,0x0,0x0,0x0,0x0,0x0,					
        0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,			
        0x22,0x17,0x41,0x0,0x32,0x1C,
        ]
    
    # Hardware reset
    def reset(self):
        epdconfig.digital_write(self.reset_pin, 1)
        epdconfig.delay_ms(200) 
        epdconfig.digital_write(self.reset_pin, 0)
        epdconfig.delay_ms(2)
        epdconfig.digital_write(self.reset_pin, 1)
        epdconfig.delay_ms(200)   

    def send_command(self, command):
        epdconfig.digital_write(self.dc_pin, 0)
        epdconfig.digital_write(self.cs_pin, 0)
        epdconfig.spi_writebyte([command])
        epdconfig.digital_write(self.cs_pin, 1)

    def send_data(self, data):
        epdconfig.digital_write(self.dc_pin, 1)
        epdconfig.digital_write(self.cs_pin, 0)
        epdconfig.spi_writebyte([data])
        epdconfig.digital_write(self.cs_pin, 1)
        
    def ReadBusy(self):        
        logger.debug("e-Paper busy")
        while(epdconfig.digital_read(self.busy_pin) == 1):      #  1: idle, 0: busy
            epdconfig.delay_ms(20)                
        logger.debug("e-Paper busy release")
    
    def TurnOnDisplay(self):
        self.send_command(0x22) #Display Update Control
        self.send_data(0xF7)
        self.send_command(0x20) #Activate Display Update Sequence
        self.ReadBusy()
        
    def TurnOnDisplay_Fast(self):
        self.send_command(0x22) #Display Update Control
        self.send_data(0xC7)
        self.send_command(0x20) #Activate Display Update Sequence
        self.ReadBusy()
        
    def TurnOnDisplay_Partial(self):
        self.send_command(0x22) #Display Update Control
        self.send_data(0xFF)
        self.send_command(0x20) #Activate Display Update Sequence
        self.ReadBusy()
        
    def TurnOnDisplay_4GRAY(self):
        self.send_command(0x22) #Display Update Control
        self.send_data(0xC7)
        self.send_command(0x20) #Activate Display Update Sequence
        self.ReadBusy()
        
    def Lut(self):
        self.send_command(0x32)
        for i in range(159):
            self.send_data(self.LUT_DATA_4Gray[i])
    
    def init(self):
        if (epdconfig.module_init() != 0):
            return -1
            
        # EPD hardware init start
        self.reset()
        self.ReadBusy()

        self.send_command(0x12) #SWRESET
        self.ReadBusy()

        self.send_command(0x45) #set Ram-Y address start/end position          
        self.send_data(0x00)
        self.send_data(0x00)
        self.send_data(0x07) #0x0107-->(263+1)=264
        self.send_data(0x01)

        self.send_command(0x4F)   # set RAM y address count to 0;    
        self.send_data(0x00)
        self.send_data(0x00)

        self.send_command(0x11)  # data entry mode
        self.send_data(0x03)
        return 0
        
    def init_Fast(self):
        if (epdconfig.module_init() != 0):
            return -1
            
        # EPD hardware init start
        self.reset()
        self.ReadBusy()

        self.send_command(0x12) #SWRESET
        self.ReadBusy()

        self.send_command(0x12) #SWRESET
        self.ReadBusy()

        self.send_command(0x18) #Read built-in temperature sensor
        self.send_data(0x80)	

        self.send_command(0x22) # Load temperature value
        self.send_data(0xB1)	
        self.send_command(0x20)	
        self.ReadBusy()

        self.send_command(0x1A) # Write to temperature register
        self.send_data(0x64)	
        self.send_data(0x00)	

        self.send_command(0x45) #set Ram-Y address start/end position          
        self.send_data(0x00)   
        self.send_data(0x00)
        self.send_data(0x07) #0x0107-->(263+1)=264
        self.send_data(0x01)

        self.send_command(0x4F)   # set RAM y address count to 0;    
        self.send_data(0x00)
        self.send_data(0x00)

        self.send_command(0x11)   # data entry mode      
        self.send_data(0x03)

        self.send_command(0x22) # Load temperature value
        self.send_data(0x91)	
        self.send_command(0x20)	
        self.ReadBusy()
        return 0

    def Init_4Gray(self):
        if (epdconfig.module_init() != 0):
            return -1
        self.reset()
        
        self.send_command(0x12) # soft reset
        self.ReadBusy();

        self.send_command(0x74) #set analog block control       
        self.send_data(0x54)
        self.send_command(0x7E) #set digital block control          
        self.send_data(0x3B)
        
        self.send_command(0x01) #Driver output control      
        self.send_data(0x07)
        self.send_data(0x01)
        self.send_data(0x00) 
        
        self.send_command(0x11) #data entry mode       
        self.send_data(0x03)

        self.send_command(0x44) #set Ram-X address start/end position   
        self.send_data(0x00)
        self.send_data(0x15)   #0x15-->(21+1)*8=176

        self.send_command(0x45) #set Ram-Y address start/end position          
        self.send_data(0x00)
        self.send_data(0x00)
        self.send_data(0x07) #0x0107-->(263+1)=264
        self.send_data(0x01)


        self.send_command(0x3C) #BorderWavefrom
        self.send_data(0x00)	


        self.send_command(0x2C)     #VCOM Voltage
        self.send_data(self.LUT_DATA_4Gray[158])    #0x1C


        self.send_command(0x3F) #EOPQ    
        self.send_data(self.LUT_DATA_4Gray[153])

        self.send_command(0x03) #VGH      
        self.send_data(self.LUT_DATA_4Gray[154])

        self.send_command(0x04) #      
        self.send_data(self.LUT_DATA_4Gray[155]) #VSH1   
        self.send_data(self.LUT_DATA_4Gray[156]) #VSH2   
        self.send_data(self.LUT_DATA_4Gray[157]) #VSL   

        self.Lut() #LUT


        self.send_command(0x4E)   # set RAM x address count to 0;
        self.send_data(0x00)
        self.send_command(0x4F)  # set RAM y address count to 0X199;    
        self.send_data(0x00)
        self.send_data(0x00)
        self.ReadBusy()
        return 0

    def getbuffer(self, image):
        # logger.debug("bufsiz = ",int(self.width/8) * self.height)
        buf = [0xFF] * (int(self.width/8) * self.height)
        image_monocolor = image.convert('1')
        imwidth, imheight = image_monocolor.size
        pixels = image_monocolor.load()
        # logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
        if(imwidth == self.width and imheight == self.height):
            logger.debug("Vertical")
            for y in range(imheight):
                for x in range(imwidth):
                    # Set the bits for the column of pixels at the current position.
                    if pixels[x, y] == 0:
                        buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
        elif(imwidth == self.height and imheight == self.width):
            logger.debug("Horizontal")
            for y in range(imheight):
                for x in range(imwidth):
                    newx = y
                    newy = self.height - x - 1
                    if pixels[x, y] == 0:
                        buf[int((newx + newy*self.width) / 8)] &= ~(0x80 >> (y % 8))
        return buf
    
    def getbuffer_4Gray(self, image):
        # logger.debug("bufsiz = ",int(self.width/8) * self.height)
        buf = [0xFF] * (int(self.width / 4) * self.height)
        image_monocolor = image.convert('L')
        imwidth, imheight = image_monocolor.size
        pixels = image_monocolor.load()
        i=0
        # logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
        if(imwidth == self.width and imheight == self.height):
            logger.debug("Vertical")
            for y in range(imheight):
                for x in range(imwidth):
                    # Set the bits for the column of pixels at the current position.
                    if(pixels[x, y] == 0xC0):
                        pixels[x, y] = 0x80
                    elif (pixels[x, y] == 0x80):
                        pixels[x, y] = 0x40
                    i= i+1
                    if(i%4 == 0):
                        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)
                        
        elif(imwidth == self.height and imheight == self.width):
            logger.debug("Horizontal")
            for x in range(imwidth):
                for y in range(imheight):
                    newx = y
                    newy = self.height - x - 1
                    if(pixels[x, y] == 0xC0):
                        pixels[x, y] = 0x80
                    elif (pixels[x, y] == 0x80):
                        pixels[x, y] = 0x40
                    i= i+1
                    if(i%4 == 0):
                        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) 
        return buf
    
    def Clear(self):
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height
        self.send_command(0x24)
        for j in range(Height):
            for i in range(Width):
                self.send_data(0XFF)
        self.TurnOnDisplay()
    
    def display(self, image):
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height
        self.send_command(0x24)
        for j in range(Height):
            for i in range(Width):
                self.send_data(image[i + j * Width])
        self.TurnOnDisplay()
        
    def display_Fast(self, image):
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height
        self.send_command(0x24)
        for j in range(Height):
            for i in range(Width):
                self.send_data(image[i + j * Width])
        self.TurnOnDisplay_Fast()
        
    def display_Base(self, image):
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height
        self.send_command(0x24)   #Write Black and White image to RAM
        for j in range(Height):
            for i in range(Width):
                self.send_data(image[i + j * Width])
                
        self.send_command(0x26)  #Write Black and White image to RAM
        for j in range(Height):
            for i in range(Width):
                self.send_data(image[i + j * Width])
        self.TurnOnDisplay()
        
    def display_Base_color(self, color):
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height
        self.send_command(0x24)   #Write Black and White image to RAM
        for j in range(Height):
            for i in range(Width):
                self.send_data(color)
                
        self.send_command(0x26)  #Write Black and White image to RAM
        for j in range(Height):
            for i in range(Width):
                self.send_data(color)
        # self.TurnOnDisplay()
    
    def display_Partial(self, Image, Xstart, Ystart, Xend, Yend):
        if((Xstart % 8 + Xend % 8 == 8 & Xstart % 8 > Xend % 8) | Xstart % 8 + Xend % 8 == 0 | (Xend - Xstart)%8 == 0):
            Xstart = Xstart // 8
            Xend = Xend // 8
        else:
            Xstart = Xstart // 8 
            if Xend % 8 == 0:
                Xend = Xend // 8
            else:
                Xend = Xend // 8 + 1
                
        if(self.width % 8 == 0):
            Width = self.width // 8
        else:
            Width = self.width // 8 +1
        Height = self.height

        Xend -= 1
        Yend -= 1
        
        # Reset
        self.reset()

        self.send_command(0x3C) #BorderWavefrom
        self.send_data(0x80)
	
        self.send_command(0x44)       # set RAM x address start/end, in page 35
        self.send_data(Xstart & 0xff)    # RAM x address start at 00h;
        self.send_data(Xend & 0xff)    # RAM x address end at 0fh(15+1)*8->128 
        self.send_command(0x45)       # set RAM y address start/end, in page 35
        self.send_data(Ystart & 0xff)    # RAM y address start at 0127h;
        self.send_data((Ystart>>8) & 0x01)    # RAM y address start at 0127h;
        self.send_data(Yend & 0xff)    # RAM y address end at 00h;
        self.send_data((Yend>>8) & 0x01)   

        self.send_command(0x4E)   # set RAM x address count to 0;
        self.send_data(Xstart & 0xff)
        self.send_command(0x4F)   # set RAM y address count to 0X127;    
        self.send_data(Ystart & 0xff)
        self.send_data((Ystart>>8) & 0x01)

        self.send_command(0x24)   #Write Black and White image to RAM
        for j in range(Height):
            for i in range(Width):
                if((j > Ystart-1) & (j < (Yend + 1)) & (i > Xstart-1) & (i < (Xend + 1))):
                    self.send_data(Image[i + j * Width])
        self.TurnOnDisplay_Partial()
  
    def display_4Gray(self, image):
        self.send_command(0x24)
        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 ###