e-paper-display/lib/waveshare_epd/epd2in13_V2.py

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2022-10-17 20:30:57 +00:00
# *****************************************************************************
# * | File : epd2in13_V2.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V4.0
# * | Date : 2019-06-20
# # | 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 = 122
EPD_HEIGHT = 250
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
FULL_UPDATE = 0
PART_UPDATE = 1
lut_full_update= [
0x80,0x60,0x40,0x00,0x00,0x00,0x00, #LUT0: BB: VS 0 ~7
0x10,0x60,0x20,0x00,0x00,0x00,0x00, #LUT1: BW: VS 0 ~7
0x80,0x60,0x40,0x00,0x00,0x00,0x00, #LUT2: WB: VS 0 ~7
0x10,0x60,0x20,0x00,0x00,0x00,0x00, #LUT3: WW: VS 0 ~7
0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT4: VCOM: VS 0 ~7
0x03,0x03,0x00,0x00,0x02, # TP0 A~D RP0
0x09,0x09,0x00,0x00,0x02, # TP1 A~D RP1
0x03,0x03,0x00,0x00,0x02, # TP2 A~D RP2
0x00,0x00,0x00,0x00,0x00, # TP3 A~D RP3
0x00,0x00,0x00,0x00,0x00, # TP4 A~D RP4
0x00,0x00,0x00,0x00,0x00, # TP5 A~D RP5
0x00,0x00,0x00,0x00,0x00, # TP6 A~D RP6
0x15,0x41,0xA8,0x32,0x30,0x0A,
]
lut_partial_update = [ #20 bytes
0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT0: BB: VS 0 ~7
0x80,0x00,0x00,0x00,0x00,0x00,0x00, #LUT1: BW: VS 0 ~7
0x40,0x00,0x00,0x00,0x00,0x00,0x00, #LUT2: WB: VS 0 ~7
0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT3: WW: VS 0 ~7
0x00,0x00,0x00,0x00,0x00,0x00,0x00, #LUT4: VCOM: VS 0 ~7
0x0A,0x00,0x00,0x00,0x00, # TP0 A~D RP0
0x00,0x00,0x00,0x00,0x00, # TP1 A~D RP1
0x00,0x00,0x00,0x00,0x00, # TP2 A~D RP2
0x00,0x00,0x00,0x00,0x00, # TP3 A~D RP3
0x00,0x00,0x00,0x00,0x00, # TP4 A~D RP4
0x00,0x00,0x00,0x00,0x00, # TP5 A~D RP5
0x00,0x00,0x00,0x00,0x00, # TP6 A~D RP6
0x15,0x41,0xA8,0x32,0x30,0x0A,
]
# 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)
# send a lot of data
def send_data2(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
epdconfig.delay_ms(100)
def TurnOnDisplay(self):
self.send_command(0x22)
self.send_data(0xC7)
self.send_command(0x20)
self.ReadBusy()
def TurnOnDisplayPart(self):
self.send_command(0x22)
self.send_data(0x0c)
self.send_command(0x20)
self.ReadBusy()
def init(self, update):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
if(update == self.FULL_UPDATE):
self.ReadBusy()
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(0xF9)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x11) #data entry mode
self.send_data(0x01)
self.send_command(0x44) #set Ram-X address start/end position
self.send_data(0x00)
self.send_data(0x0F) #0x0C-->(15+1)*8=128
self.send_command(0x45) #set Ram-Y address start/end position
self.send_data(0xF9) #0xF9-->(249+1)=250
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x3C) #BorderWavefrom
self.send_data(0x03)
self.send_command(0x2C) #VCOM Voltage
self.send_data(0x55) #
self.send_command(0x03)
self.send_data(self.lut_full_update[70])
self.send_command(0x04) #
self.send_data(self.lut_full_update[71])
self.send_data(self.lut_full_update[72])
self.send_data(self.lut_full_update[73])
self.send_command(0x3A) #Dummy Line
self.send_data(self.lut_full_update[74])
self.send_command(0x3B) #Gate time
self.send_data(self.lut_full_update[75])
self.send_command(0x32)
for count in range(70):
self.send_data(self.lut_full_update[count])
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 0X127
self.send_data(0xF9)
self.send_data(0x00)
self.ReadBusy()
else:
self.send_command(0x2C) #VCOM Voltage
self.send_data(0x26)
self.ReadBusy()
self.send_command(0x32)
for count in range(70):
self.send_data(self.lut_partial_update[count])
self.send_command(0x37)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x40)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x22)
self.send_data(0xC0)
self.send_command(0x20)
self.ReadBusy()
self.send_command(0x3C) #BorderWavefrom
self.send_data(0x01)
return 0
def getbuffer(self, image):
if self.width%8 == 0:
linewidth = int(self.width/8)
else:
linewidth = int(self.width/8) + 1
buf = [0xFF] * (linewidth * self.height)
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
if(imwidth == self.width and imheight == self.height):
logger.debug("Vertical")
for y in range(imheight):
for x in range(imwidth):
if pixels[x, y] == 0:
x = imwidth - x
buf[int(x / 8) + y * linewidth] &= ~(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:
newy = imwidth - newy - 1
buf[int(newx / 8) + newy*linewidth] &= ~(0x80 >> (y % 8))
return buf
def display(self, image):
self.send_command(0x24)
self.send_data2(image)
self.TurnOnDisplay()
def displayPartial(self, image):
if self.width%8 == 0:
linewidth = int(self.width/8)
else:
linewidth = int(self.width/8) + 1
buf = [0x00] * self.height * linewidth
for j in range(0, self.height):
for i in range(0, linewidth):
buf[i + j * linewidth] = ~image[i + j * linewidth]
self.send_command(0x24)
self.send_data2(image)
self.send_command(0x26)
self.send_data2(buf)
self.TurnOnDisplayPart()
def displayPartBaseImage(self, image):
self.send_command(0x24)
self.send_data2(image)
self.send_command(0x26)
self.send_data2(image)
self.TurnOnDisplay()
def Clear(self, color):
if self.width%8 == 0:
linewidth = int(self.width/8)
else:
linewidth = int(self.width/8) + 1
# logger.debug(linewidth)
buf = [0x00] * self.height * linewidth
for j in range(0, self.height):
for i in range(0, linewidth):
buf[i + j * linewidth] = color
self.send_command(0x24)
self.send_data2(buf)
# self.send_command(0x26)
# for j in range(0, self.height):
# for i in range(0, linewidth):
# self.send_data(color)
self.TurnOnDisplay()
def sleep(self):
# self.send_command(0x22) #POWER OFF
# self.send_data(0xC3)
# self.send_command(0x20)
self.send_command(0x10) #enter deep sleep
self.send_data(0x03)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###