e-paper-display/bcm2835-1.71/e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd2in9bc.py

159 lines
5.9 KiB
Python

# *****************************************************************************
# * | File : epd2in9bc.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 = 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
# 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(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): # 0: idle, 1: busy
epdconfig.delay_ms(200)
logger.debug("e-Paper busy release")
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(0x06) # boost
self.send_data (0x17)
self.send_data (0x17)
self.send_data (0x17)
self.send_command(0x04) # POWER_ON
self.ReadBusy()
self.send_command(0X00) # PANEL_SETTING
self.send_data(0x8F)
self.send_command(0X50) # VCOM_AND_DATA_INTERVAL_SETTING
self.send_data(0x77)
self.send_command(0x61) # TCON_RESOLUTION
self.send_data (0x80)
self.send_data (0x01)
self.send_data (0x28)
# self.send_command(VCM_DC_SETTING_REGISTER)
# self.send_data (0x0A)
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, blackimage, ryimage): # ryimage: red or yellow image
if (blackimage != None):
self.send_command(0X10)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(blackimage[i])
if (ryimage != None):
self.send_command(0X13)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(ryimage[i])
self.send_command(0x12)
self.ReadBusy()
def Clear(self):
self.send_command(0X10)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_command(0X13)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_command(0x12)
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 ###