e-paper-display/lib/waveshare_epd/epd1in54b.py

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2022-10-17 20:30:57 +00:00
# *****************************************************************************
# * | File : epd1in54b.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 = 200
EPD_HEIGHT = 200
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_vcom0 = [0x0E, 0x14, 0x01, 0x0A, 0x06, 0x04, 0x0A, 0x0A, 0x0F, 0x03, 0x03, 0x0C, 0x06, 0x0A, 0x00]
lut_w = [0x0E, 0x14, 0x01, 0x0A, 0x46, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x86, 0x0A, 0x04]
lut_b = [0x0E, 0x14, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x4A, 0x04]
lut_g1 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04]
lut_g2 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04]
lut_vcom1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
lut_red0 = [0x83, 0x5D, 0x01, 0x81, 0x48, 0x23, 0x77, 0x77, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
lut_red1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(200)
epdconfig.digital_write(self.reset_pin, 0) # module reset
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) == 0):
epdconfig.delay_ms(100)
logger.debug("e-Paper busy release")
def set_lut_bw(self):
self.send_command(0x20) # vcom
for count in range(0, 15):
self.send_data(self.lut_vcom0[count])
self.send_command(0x21) # ww --
for count in range(0, 15):
self.send_data(self.lut_w[count])
self.send_command(0x22) # bw r
for count in range(0, 15):
self.send_data(self.lut_b[count])
self.send_command(0x23) # wb w
for count in range(0, 15):
self.send_data(self.lut_g1[count])
self.send_command(0x24) # bb b
for count in range(0, 15):
self.send_data(self.lut_g2[count])
def set_lut_red(self):
self.send_command(0x25)
for count in range(0, 15):
self.send_data(self.lut_vcom1[count])
self.send_command(0x26)
for count in range(0, 15):
self.send_data(self.lut_red0[count])
self.send_command(0x27)
for count in range(0, 15):
self.send_data(self.lut_red1[count])
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(0x01) # POWER_SETTING
self.send_data(0x07)
self.send_data(0x00)
self.send_data(0x08)
self.send_data(0x00)
self.send_command(0x06) # BOOSTER_SOFT_START
self.send_data(0x07)
self.send_data(0x07)
self.send_data(0x07)
self.send_command(0x04) # POWER_ON
self.ReadBusy()
self.send_command(0X00) # PANEL_SETTING
self.send_data(0xCF)
self.send_command(0X50) # VCOM_AND_DATA_INTERVAL_SETTING
self.send_data(0x17)
self.send_command(0x30) # PLL_CONTROL
self.send_data(0x39)
self.send_command(0x61) # TCON_RESOLUTION set x and y
self.send_data(0xC8)
self.send_data(0x00)
self.send_data(0xC8)
self.send_command(0x82) # VCM_DC_SETTING_REGISTER
self.send_data(0x0E)
self.set_lut_bw()
self.set_lut_red()
return 0
def getbuffer(self, image):
buf = [0xFF] * int(self.width * self.height / 8)
# Set buffer to value of Python Imaging Library image.
# Image must be in mode 1.
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
if imwidth != self.width or imheight != self.height:
raise ValueError('Image must be same dimensions as display \
({0}x{1}).' .format(self.width, self.height))
pixels = image_monocolor.load()
for y in range(self.height):
for x in range(self.width):
# 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))
return buf
def display(self, blackimage, redimage):
# send black data
if (blackimage != None):
self.send_command(0x10) # DATA_START_TRANSMISSION_1
for i in range(0, int(self.width * self.height / 8)):
temp = 0x00
for bit in range(0, 4):
if (blackimage[i] & (0x80 >> bit) != 0):
temp |= 0xC0 >> (bit * 2)
self.send_data(temp)
temp = 0x00
for bit in range(4, 8):
if (blackimage[i] & (0x80 >> bit) != 0):
temp |= 0xC0 >> ((bit - 4) * 2)
self.send_data(temp)
# send red data
if (redimage != None):
self.send_command(0x13) # DATA_START_TRANSMISSION_2
for i in range(0, int(self.width * self.height / 8)):
self.send_data(redimage[i])
self.send_command(0x12) # DISPLAY_REFRESH
self.ReadBusy()
def Clear(self):
self.send_command(0x10) # DATA_START_TRANSMISSION_1
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xFF)
self.send_data(0xFF)
self.send_command(0x13) # DATA_START_TRANSMISSION_2
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xFF)
self.send_command(0x12) # DISPLAY_REFRESH
self.ReadBusy()
def sleep(self):
self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
self.send_data(0x17)
self.send_command(0x82) # to solve Vcom drop
self.send_data(0x00)
self.send_command(0x01) # power setting
self.send_data(0x02) # gate switch to external
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.ReadBusy()
self.send_command(0x02) # power off
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###