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e-paper-display/lib/waveshare_epd/epd2in7b.py
robert 21081c1364 initial commit
2022-10-17 22:30:57 +02:00

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Python
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# *****************************************************************************
# * | File : epd2in7b.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 = 176
EPD_HEIGHT = 264
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
lut_vcom_dc = [
0x00, 0x00,
0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01,
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10,
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
]
lut_ww = [
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
]
# R22H r
lut_bw = [
0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01,
0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0xB0, 0x04, 0x10, 0x00, 0x00, 0x05,
0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A,
0xC0, 0x23, 0x00, 0x00, 0x00, 0x01
]
# R23H w
lut_bb = [
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
]
# R24H b
lut_wb = [
0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08,
0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
0x00, 0x23, 0x00, 0x00, 0x00, 0x01
]
# 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) == 0): # 0: idle, 1: busy
epdconfig.delay_ms(100)
logger.debug("e-Paper busy release")
def set_lut(self):
self.send_command(0x20) # vcom
for count in range(0, 44):
self.send_data(self.lut_vcom_dc[count])
self.send_command(0x21) # ww --
for count in range(0, 42):
self.send_data(self.lut_ww[count])
self.send_command(0x22) # bw r
for count in range(0, 42):
self.send_data(self.lut_bw[count])
self.send_command(0x23) # wb w
for count in range(0, 42):
self.send_data(self.lut_bb[count])
self.send_command(0x24) # bb b
for count in range(0, 42):
self.send_data(self.lut_wb[count])
def init(self):
if (epdconfig.module_init() != 0):
return -1
self.reset()
self.send_command(0x04) # POWER_ON
self.ReadBusy()
self.send_command(0x00) # PANEL_SETTING
self.send_data(0xaf) #KW-BF KWR-AF BWROTP 0f
self.send_command(0x30) # PLL_CONTROL
self.send_data(0x3a) #3A 100HZ 29 150Hz 39 200HZ 31 171HZ
self.send_command(0x01) # POWER_SETTING
self.send_data(0x03) # VDS_EN, VDG_EN
self.send_data(0x00) # VCOM_HV, VGHL_LV[1], VGHL_LV[0]
self.send_data(0x2b) # VDH
self.send_data(0x2b) # VDL
self.send_data(0x09) # VDHR
self.send_command(0x06) # BOOSTER_SOFT_START
self.send_data(0x07)
self.send_data(0x07)
self.send_data(0x17)
# Power optimization
self.send_command(0xF8)
self.send_data(0x60)
self.send_data(0xA5)
# Power optimization
self.send_command(0xF8)
self.send_data(0x89)
self.send_data(0xA5)
# Power optimization
self.send_command(0xF8)
self.send_data(0x90)
self.send_data(0x00)
# Power optimization
self.send_command(0xF8)
self.send_data(0x93)
self.send_data(0x2A)
# Power optimization
self.send_command(0xF8)
self.send_data(0x73)
self.send_data(0x41)
self.send_command(0x82) # VCM_DC_SETTING_REGISTER
self.send_data(0x12)
self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
self.send_data(0x87) # define by OTP
self.set_lut()
self.send_command(0x16) # PARTIAL_DISPLAY_REFRESH
self.send_data(0x00)
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 display(self, imageblack, imagered):
self.send_command(0x10)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(~imageblack[i])
self.send_command(0x11)
self.send_command(0x13)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(~imagered[i])
self.send_command(0x11)
self.send_command(0x12)
self.ReadBusy()
def Clear(self, color=0x00):
self.send_command(0x10)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(color)
self.send_command(0x11)
self.send_command(0x13)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(color)
self.send_command(0x11)
self.send_command(0x12)
self.ReadBusy()
def sleep(self):
self.send_command(0X50)
self.send_data(0xf7)
self.send_command(0X02)
self.send_command(0X07)
self.send_data(0xA5)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###
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