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epd2in9d.py
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#!/usr/bin/python
# -*- coding:utf-8 -*-
# *****************************************************************************
# * | File : epd2in9d.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V2.1
# * | Date : 2022-08-10
# # | 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.
#
from distutils.command.build_scripts import build_scripts
import logging
from . import epdconfig
from PIL import Image
import RPi.GPIO as GPIO
# Display resolution
EPD_WIDTH = 128
EPD_HEIGHT = 296
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_vcom1 = [
0x00, 0x19, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
]
lut_ww1 = [
0x00, 0x19, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
]
lut_bw1 = [
0x80, 0x19, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
]
lut_wb1 = [
0x40, 0x19, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
]
lut_bb1 = [
0x00, 0x19, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
]
# 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(5)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(5)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(5)
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)
# 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):
logger.debug("e-Paper busy")
while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
self.send_command(0x71)
epdconfig.delay_ms(10)
logger.debug("e-Paper busy release")
def TurnOnDisplay(self):
self.send_command(0x12)
epdconfig.delay_ms(10)
self.ReadBusy()
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(0x04)
self.ReadBusy() #waiting for the electronic paper IC to release the idle signal
self.send_command(0x00) #panel setting
self.send_data(0x1f) # LUT from OTP，KW-BF KWR-AF BWROTP 0f BWOTP 1f
self.send_command(0x61) #resolution setting
self.send_data (0x80)
self.send_data (0x01)
self.send_data (0x28)
self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING
self.send_data(0x97) #WBmode:VBDF 17|D7 VBDW 97 VBDB 57 WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7
return 0
def SetPartReg(self):
self.send_command(0x01) #POWER SETTING
self.send_data(0x03)
self.send_data(0x00)
self.send_data(0x2b)
self.send_data(0x2b)
self.send_data(0x03)
self.send_command(0x06) #boost soft start
self.send_data(0x17) #A
self.send_data(0x17) #B
self.send_data(0x17) #C
self.send_command(0x04)
self.ReadBusy()
self.send_command(0x00) #panel setting
self.send_data(0xbf) #LUT from OTP，128x296
self.send_command(0x30) #PLL setting
self.send_data(0x3a) # 3a 100HZ 29 150Hz 39 200HZ 31 171HZ
self.send_command(0x61) #resolution setting
self.send_data(self.width)
self.send_data((self.height >> 8) & 0xff)
self.send_data(self.height & 0xff)
self.send_command(0x82) #vcom_DC setting
self.send_data(0x12)
self.send_command(0X50)
self.send_data(0x97)
self.send_command(0x20) # vcom
self.send_data2(self.lut_vcom1)
self.send_command(0x21) # ww --
self.send_data2(self.lut_ww1)
self.send_command(0x22) # bw r
self.send_data2(self.lut_bw1)
self.send_command(0x23) # wb w
self.send_data2(self.lut_wb1)
self.send_command(0x24) # bb b
self.send_data2(self.lut_bb1)
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, image):
self.send_command(0x10)
self.send_data2([0x00] * int(self.width * self.height / 8))
epdconfig.delay_ms(10)
self.send_command(0x13)
self.send_data2(image)
epdconfig.delay_ms(10)
self.TurnOnDisplay()
def DisplayPartial(self, image):
self.SetPartReg()
self.send_command(0x91)
self.send_command(0x90)
self.send_data(0)
self.send_data(self.width - 1)
self.send_data(0)
self.send_data(0)
self.send_data(int(self.height / 256))
self.send_data(self.height % 256 - 1)
self.send_data(0x28)
buf = [0x00] * int(self.width * self.height / 8)
for i in range(0, int(self.width * self.height / 8)):
buf[i] = ~image[i]
self.send_command(0x10)
self.send_data2(image)
epdconfig.delay_ms(10)
self.send_command(0x13)
self.send_data2(buf)
epdconfig.delay_ms(10)
self.TurnOnDisplay()
def Clear(self):
self.send_command(0x10)
self.send_data2([0x00] * int(self.width * self.height / 8))
epdconfig.delay_ms(10)
self.send_command(0x13)
self.send_data2([0xFF] * int(self.width * self.height / 8))
epdconfig.delay_ms(10)
self.TurnOnDisplay()
def sleep(self):
self.send_command(0X50)
self.send_data(0xf7)
self.send_command(0X02) #power off
self.send_command(0X07) #deep sleep
self.send_data(0xA5)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###