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e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd7in5_HD.py Normal file
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# *****************************************************************************
# * | 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
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(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 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")
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_data2([0xAE, 0xC7, 0xC3, 0xC0, 0x40])
self.send_command(0x01) # Set MUX as 527
self.send_data2([0xAF, 0x02, 0x01])
self.send_command(0x11) # Data entry mode
self.send_data(0x01)
self.send_command(0x44)
self.send_data2([0x00, 0x00, 0x6F, 0x03]) # RAM x address start at 0
self.send_command(0x45)
self.send_data2([0xAF, 0x02, 0x00, 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_data2([0x00, 0x00])
self.send_command(0x4F)
self.send_data2([0x00, 0x00])
# EPD hardware init end
return 0
def getbuffer(self, image):
img = image
imwidth, imheight = img.size
if(imwidth == self.width and imheight == self.height):
img = img.convert('1')
elif(imwidth == self.height and imheight == self.width):
img = img.rotate(90, expand=True).convert('1')
else:
logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
# return a blank buffer
return [0xff] * int(self.width * self.height / 8)
buf = bytearray(img.tobytes('raw'))
return buf
def display(self, image):
self.send_command(0x4F)
self.send_data2([0x00, 0x00])
self.send_command(0x24)
self.send_data2(image)
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):
buf = [0xff] * int(self.width * self.height / 8)
self.send_command(0x4F)
self.send_data2([0x00, 0x00])
self.send_command(0x24)
self.send_data2(buf)
self.send_command(0x26)
self.send_data2(buf)
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.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###