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epd13in3b.py
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epd13in3b.py
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# *****************************************************************************
# * | File : epd13in3b.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2024-04-08
# # | 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 = 960
EPD_HEIGHT = 680
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
if (epdconfig.module_init() != 0):
return -1
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(2)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
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 send_data2(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.SPI.writebytes2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
logger.debug("e-Paper busy")
busy = epdconfig.digital_read(self.busy_pin)
while(busy == 1):
busy = epdconfig.digital_read(self.busy_pin)
epdconfig.delay_ms(20)
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_Part(self):
self.send_command(0x22) #Display Update Control
self.send_data(0xFF)
self.send_command(0x20) #Activate Display Update Sequence
self.ReadBusy()
def init(self):
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) #SWRESET
self.ReadBusy()
self.send_command(0x0C)
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0x80)
self.send_command(0x01)
self.send_data(0xA7)
self.send_data(0x02)
self.send_data(0x00)
self.send_command(0x11)
self.send_data(0x03)
self.send_command(0x44)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0xBF)
self.send_data(0x03)
self.send_command(0x45)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0xA7)
self.send_data(0x02)
self.send_command(0x3C)
self.send_data(0x01)
self.send_command(0x18)
self.send_data(0x80)
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.ReadBusy()
# EPD hardware init end
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("Horizontal")
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("Vertical")
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 Clear(self):
self.send_command(0x24)
self.send_data2([0xFF] * (int(self.width/8) * self.height))
self.send_command(0x26)
self.send_data2([0x00] * (int(self.width/8) * self.height))
self.TurnOnDisplay()
def Clear_Base(self):
self.send_command(0x24)
self.send_data2([0xFF] * (int(self.width/8) * self.height))
self.send_command(0x26)
self.send_data2([0x00] * (int(self.width/8) * self.height))
self.TurnOnDisplay()
self.send_command(0x26)
self.send_data2([0xFF] * (int(self.width/8) * self.height))
def display(self, blackimage, ryimage):
if(self.width % 8 == 0):
Width = self.width // 8
else:
Width = self.width // 8 +1
Height = self.height
if (blackimage != None):
self.send_command(0x24)
self.send_data2(blackimage)
if (ryimage != None):
for j in range(Height):
for i in range(Width):
ryimage[i + j * Width] = ~ryimage[i + j * Width]
self.send_command(0x26)
self.send_data2(ryimage)
self.TurnOnDisplay()
def display_Base(self, blackimage, ryimage):
if(self.width % 8 == 0):
Width = self.width // 8
else:
Width = self.width // 8 +1
Height = self.height
if (blackimage != None):
self.send_command(0x24)
self.send_data2(blackimage)
if (ryimage != None):
for j in range(Height):
for i in range(Width):
ryimage[i + j * Width] = ~ryimage[i + j * Width]
self.send_command(0x26)
self.send_data2(ryimage)
self.TurnOnDisplay()
self.send_command(0x26)
self.send_data2(blackimage)
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
self.send_command(0x3C)
self.send_data(0x80)
self.send_command(0x44)
self.send_data((Xstart*8) & 0xff)
self.send_data((Xstart>>5) & 0x01)
self.send_data((Xend*8) & 0xff)
self.send_data((Xend>>5) & 0x01)
self.send_command(0x45)
self.send_data(Ystart & 0xff)
self.send_data((Ystart>>8) & 0x01)
self.send_data(Yend & 0xff)
self.send_data((Yend>>8) & 0x01)
self.send_command(0x4E)
self.send_data((Xstart*8) & 0xff)
self.send_data((Xstart>>5) & 0x01)
self.send_command(0x4F)
self.send_data(Ystart & 0xff)
self.send_data((Ystart>>8) & 0x01)
self.send_command(0x24)
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_Part()
self.send_command(0x26)
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])
def sleep(self):
self.send_command(0x10) # DEEP_SLEEP
self.send_data(0x03)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###