alba/frontend/lib/waveshare_epd/epd3in7.py

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2022-04-27 15:28:31 +02:00
# *****************************************************************************
# * | File : epd3in7.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2020-07-16
# # | 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 = 280
EPD_HEIGHT = 480
GRAY1 = 0xff #white
GRAY2 = 0xC0 #Close to white
GRAY3 = 0x80 #Close to black
GRAY4 = 0x00 #black
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_4Gray_GC = [
0x2A,0x06,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x28,0x06,0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x20,0x06,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x14,0x06,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x08,0x08,0x02,
0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x22,0x22,0x22,0x22,0x22
]
lut_1Gray_GC = [
0x2A,0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x05,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x2A,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x05,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x02,0x03,0x0A,0x00,0x02,0x06,0x0A,0x05,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x22,0x22,0x22,0x22,0x22
]
lut_1Gray_DU = [
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x01,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x0A,0x55,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x05,0x05,0x00,0x05,0x03,0x05,0x05,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x22,0x22,0x22,0x22,0x22
]
lut_1Gray_A2 = [
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x03,0x05,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x22,0x22,0x22,0x22,0x22
]
# 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(5)
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): # 0: idle, 1: busy
epdconfig.delay_ms(10)
logger.debug("e-Paper busy release")
def init(self, mode):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(0x12)
epdconfig.delay_ms(300)
self.send_command(0x46)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x47)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x01) # setting gaet number
self.send_data(0xDF)
self.send_data(0x01)
self.send_data(0x00)
self.send_command(0x03) # set gate voltage
self.send_data(0x00)
self.send_command(0x04) # set source voltage
self.send_data(0x41)
self.send_data(0xA8)
self.send_data(0x32)
self.send_command(0x11) # set data entry sequence
self.send_data(0x03)
self.send_command(0x3C) # set border
self.send_data(0x03)
self.send_command(0x0C) # set booster strength
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0xC0)
self.send_command(0x18) # set internal sensor on
self.send_data(0x80)
self.send_command(0x2C) # set vcom value
self.send_data(0x44)
if(mode == 0): #4Gray
self.send_command(0x37) # set display option, these setting turn on previous function
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
elif(mode == 1): #1Gray
self.send_command(0x37) # set display option, these setting turn on previous function
self.send_data(0x00) #can switch 1 gray or 4 gray
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0x4F)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
else:
logger.debug("There is no such mode")
self.send_command(0x44) # setting X direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x17)
self.send_data(0x01)
self.send_command(0x45) # setting Y direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0xDF)
self.send_data(0x01)
self.send_command(0x22) # Display Update Control 2
self.send_data(0xCF)
return 0
def load_lut(self, lut):
self.send_command(0x32)
for i in range(0, 105):
self.send_data(lut[i])
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 = imwidth - 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 display_4Gray(self, image):
if (image == None):
return
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for i in range(0, (int)(self.height*(self.width/8))):
temp3=0
for j in range(0, 2):
temp1 = image[i*2+j]
for k in range(0, 2):
temp2 = temp1&0xC0
if(temp2 == 0xC0):
temp3 |= 0x01 #white
elif(temp2 == 0x00):
temp3 |= 0x00 #black
elif(temp2 == 0x80):
temp3 |= 0x00 #gray1
else: #0x40
temp3 |= 0x01 #gray2
temp3 <<= 1
temp1 <<= 2
temp2 = temp1&0xC0
if(temp2 == 0xC0): #white
temp3 |= 0x01
elif(temp2 == 0x00): #black
temp3 |= 0x00
elif(temp2 == 0x80):
temp3 |= 0x00 #gray1
else: #0x40
temp3 |= 0x01 #gray2
if(j!=1 or k!=1):
temp3 <<= 1
temp1 <<= 2
self.send_data(temp3)
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x26)
for i in range(0, (int)(self.height*(self.width/8))):
temp3=0
for j in range(0, 2):
temp1 = image[i*2+j]
for k in range(0, 2):
temp2 = temp1&0xC0
if(temp2 == 0xC0):
temp3 |= 0x01 #white
elif(temp2 == 0x00):
temp3 |= 0x00 #black
elif(temp2 == 0x80):
temp3 |= 0x01 #gray1
else: #0x40
temp3 |= 0x00 #gray2
temp3 <<= 1
temp1 <<= 2
temp2 = temp1&0xC0
if(temp2 == 0xC0): #white
temp3 |= 0x01
elif(temp2 == 0x00): #black
temp3 |= 0x00
elif(temp2 == 0x80):
temp3 |= 0x01 #gray1
else: #0x40
temp3 |= 0x00 #gray2
if(j!=1 or k!=1):
temp3 <<= 1
temp1 <<= 2
self.send_data(temp3)
self.load_lut(self.lut_4Gray_GC)
self.send_command(0x22)
self.send_data(0xC7)
self.send_command(0x20)
self.ReadBusy()
def display_1Gray(self, image):
if (image == None):
return
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, self.height):
for i in range(0, int(self.width / 8)):
self.send_data(image[i + j * int(self.width / 8)])
self.load_lut(self.lut_1Gray_A2)
self.send_command(0x20)
self.ReadBusy()
def Clear(self, color, mode):
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, self.height):
for i in range(0, int(self.width / 8)):
self.send_data(0xff)
if(mode == 0): #4Gray
self.send_command(0x26)
for j in range(0, self.height):
for i in range(0, int(self.width / 8)):
self.send_data(0xff)
self.load_lut(self.lut_4Gray_GC)
self.send_command(0x22)
self.send_data(0xC7)
elif(mode == 1): #1Gray
self.load_lut(self.lut_1Gray_DU)
else:
logger.debug("There is no such mode")
self.send_command(0x20)
self.ReadBusy()
def sleep(self):
self.send_command(0X50) # DEEP_SLEEP_MODE
self.send_data(0xf7)
self.send_command(0X02) #power off
self.send_command(0X07) #deep sleep
self.send_data(0xA5)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###