# *****************************************************************************
# * | 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
from . import epdconfig
# Display resolution
EPD_WIDTH = 880
EPD_HEIGHT = 528
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
# 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):
logging.debug("e-Paper busy")
busy = epdconfig.digital_read(self.busy_pin)
while (busy == 1):
busy = epdconfig.digital_read(self.busy_pin)
epdconfig.delay_ms(200)
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.ReadBusy();
self.send_command(0x12); # SWRESET
self.ReadBusy();
self.send_command(0x46); # Auto Write Red RAM
self.send_data(0xf7);
self.ReadBusy();
self.send_command(0x47); # Auto Write B/W RAM
self.send_data(0xf7);
self.ReadBusy();
self.send_command(0x0C); # Soft start setting
self.send_data(0xAE);
self.send_data(0xC7);
self.send_data(0xC3);
self.send_data(0xC0);
self.send_data(0x40);
self.send_command(0x01); # Set MUX as 527
self.send_data(0xAF);
self.send_data(0x02);
self.send_data(0x01); # 0x01
self.send_command(0x11); # Data entry mode
self.send_data(0x01);
self.send_command(0x44);
self.send_data(0x00); # RAM x address start at 0
self.send_data(0x00);
self.send_data(0x6F);
self.send_data(0x03);
self.send_command(0x45);
self.send_data(0xAF);
self.send_data(0x02);
self.send_data(0x00);
self.send_data(0x00);
self.send_command(0x3C); # VBD
self.send_data(0x05); # LUT1, for white
self.send_command(0x18);
self.send_data(0X80);
self.send_command(0x22);
self.send_data(0XB1); # Load Temperature and waveform setting.
self.send_command(0x20);
self.ReadBusy();
self.send_command(0x4E); # set RAM x address count to 0;
self.send_data(0x00);
self.send_data(0x00);
self.send_command(0x4F);
self.send_data(0x00);
self.send_data(0x00);
# EPD hardware init end
return 0
def getbuffer(self, image):
# logging.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()
# logging.debug("imwidth = %d, imheight = %d",imwidth,imheight)
if (imwidth == self.width and imheight == self.height):
logging.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):
logging.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(0x4F);
self.send_data(0x00);
self.send_data(0x00);
self.send_command(0x24);
for i in range(0, int(self.width * self.height / 8)):
self.send_data(image[i]);
self.send_command(0x22);
self.send_data(0xF7); # Load LUT from MCU(0x32)
self.send_command(0x20);
epdconfig.delay_ms(10);
self.ReadBusy();
def Clear(self):
self.send_command(0x4F);
self.send_data(0x00);
self.send_data(0x00);
self.send_command(0x24)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_command(0x26)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_command(0x22);
self.send_data(0xF7); # Load LUT from MCU(0x32)
self.send_command(0x20);
epdconfig.delay_ms(10);
self.ReadBusy();
def sleep(self):
self.send_command(0x10);
self.send_data(0x01);
epdconfig.module_exit()
### END OF FILE ###