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epd7in5_V2.py
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# *****************************************************************************
# * | File : epd7in5.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
import epdconfig
# Display resolution
EPD_WIDTH = 800
EPD_HEIGHT = 480
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
Voltage_Frame_7IN5_V2 = [
0x6, 0x3F, 0x3F, 0x11, 0x24, 0x7, 0x17,
]
LUT_VCOM_7IN5_V2 = [
0x0, 0xF, 0xF, 0x0, 0x0, 0x1,
0x0, 0xF, 0x1, 0xF, 0x1, 0x2,
0x0, 0xF, 0xF, 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,
]
LUT_WW_7IN5_V2 = [
0x10, 0xF, 0xF, 0x0, 0x0, 0x1,
0x84, 0xF, 0x1, 0xF, 0x1, 0x2,
0x20, 0xF, 0xF, 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,
]
LUT_BW_7IN5_V2 = [
0x10, 0xF, 0xF, 0x0, 0x0, 0x1,
0x84, 0xF, 0x1, 0xF, 0x1, 0x2,
0x20, 0xF, 0xF, 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,
]
LUT_WB_7IN5_V2 = [
0x80, 0xF, 0xF, 0x0, 0x0, 0x1,
0x84, 0xF, 0x1, 0xF, 0x1, 0x2,
0x40, 0xF, 0xF, 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,
]
LUT_BB_7IN5_V2 = [
0x80, 0xF, 0xF, 0x0, 0x0, 0x1,
0x84, 0xF, 0x1, 0xF, 0x1, 0x2,
0x40, 0xF, 0xF, 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,
]
# 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")
self.send_command(0x71)
busy = epdconfig.digital_read(self.busy_pin)
while(busy == 0):
self.send_command(0x71)
busy = epdconfig.digital_read(self.busy_pin)
epdconfig.delay_ms(20)
logger.debug("e-Paper busy release")
def SetLut(self, lut_vcom, lut_ww, lut_bw, lut_wb, lut_bb):
self.send_command(0x20)
for count in range(0, 42):
self.send_data(lut_vcom[count])
self.send_command(0x21)
for count in range(0, 42):
self.send_data(lut_ww[count])
self.send_command(0x22)
for count in range(0, 42):
self.send_data(lut_bw[count])
self.send_command(0x23)
for count in range(0, 42):
self.send_data(lut_wb[count])
self.send_command(0x24)
for count in range(0, 42):
self.send_data(lut_bb[count])
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
# self.send_command(0x06) # btst
# self.send_data(0x17)
# self.send_data(0x17)
# self.send_data(0x28) # If an exception is displayed, try using 0x38
# self.send_data(0x17)
# self.send_command(0x01) #POWER SETTING
# self.send_data(0x07)
# self.send_data(0x07) #VGH=20V,VGL=-20V
# self.send_data(0x3f) #VDH=15V
# self.send_data(0x3f) #VDL=-15V
self.send_command(0x01); # power setting
self.send_data(0x17); # 1-0=11: internal power
self.send_data(self.Voltage_Frame_7IN5_V2[6]); # VGH&VGL
self.send_data(self.Voltage_Frame_7IN5_V2[1]); # VSH
self.send_data(self.Voltage_Frame_7IN5_V2[2]); # VSL
self.send_data(self.Voltage_Frame_7IN5_V2[3]); # VSHR
self.send_command(0x82); # VCOM DC Setting
self.send_data(self.Voltage_Frame_7IN5_V2[4]); # VCOM
self.send_command(0x06); # Booster Setting
self.send_data(0x27);
self.send_data(0x27);
self.send_data(0x2F);
self.send_data(0x17);
self.send_command(0x30); # OSC Setting
self.send_data(self.Voltage_Frame_7IN5_V2[0]); # 2-0=100: N=4 ; 5-3=111: M=7 ; 3C=50Hz 3A=100HZ
self.send_command(0x04) #POWER ON
epdconfig.delay_ms(100)
self.ReadBusy()
self.send_command(0X00) #PANNEL SETTING
self.send_data(0x3F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f
self.send_command(0x61) #tres
self.send_data(0x03) #source 800
self.send_data(0x20)
self.send_data(0x01) #gate 480
self.send_data(0xE0)
self.send_command(0X15)
self.send_data(0x00)
self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING
self.send_data(0x10)
self.send_data(0x07)
self.send_command(0X60) #TCON SETTING
self.send_data(0x22)
self.send_command(0x65); # Resolution setting
self.send_data(0x00);
self.send_data(0x00); # 800*480
self.send_data(0x00);
self.send_data(0x00);
self.SetLut(self.LUT_VCOM_7IN5_V2, self.LUT_WW_7IN5_V2, self.LUT_BW_7IN5_V2, self.LUT_WB_7IN5_V2, self.LUT_BB_7IN5_V2)
# EPD hardware init end
return 0
def getbuffer(self, image):
img = image
imwidth, imheight = img.size
if(imwidth == self.width and imheight == self.height):
img = img.convert('1')
elif(imwidth == self.height and imheight == self.width):
# image has correct dimensions, but needs to be rotated
img = img.rotate(90, expand=True).convert('1')
else:
logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
# return a blank buffer
return [0x00] * (int(self.width/8) * self.height)
buf = bytearray(img.tobytes('raw'))
# The bytes need to be inverted, because in the PIL world 0=black and 1=white, but
# in the e-paper world 0=white and 1=black.
for i in range(len(buf)):
buf[i] ^= 0xFF
return buf
def display(self, image):
self.send_command(0x13)
self.send_data2(image)
self.send_command(0x12)
epdconfig.delay_ms(100)
self.ReadBusy()
def Clear(self):
buf = [0x00] * (int(self.width/8) * self.height)
self.send_command(0x10)
self.send_data2(buf)
self.send_command(0x13)
self.send_data2(buf)
self.send_command(0x12)
epdconfig.delay_ms(100)
self.ReadBusy()
def sleep(self):
self.send_command(0x02) # POWER_OFF
self.ReadBusy()
self.send_command(0x07) # DEEP_SLEEP
self.send_data(0XA5)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###