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- # *****************************************************************************
- # * | 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
- # 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) == 1):
- epdconfig.delay_ms(100)
- logger.debug("e-Paper busy release")
-
- 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(0x01) #Driver output control
- self.send_data(0xC7)
- self.send_data(0x00)
- self.send_data(0x01)
- self.send_command(0x11) #data entry mode
- self.send_data(0x01)
- self.send_command(0x44) #set Ram-X address start/end position
- self.send_data(0x00)
- self.send_data(0x18) #0x18-->(24+1)*8=200
- self.send_command(0x45) #set Ram-Y address start/end position
- self.send_data(0xC7) #0xC7-->(199+1)=200
- self.send_data(0x00)
- self.send_data(0x00)
- self.send_data(0x00)
- self.send_command(0x3C) #BorderWavefrom
- self.send_data(0x05)
- self.send_command(0x18) #Read built-in temperature sensor
- self.send_data(0x80)
- self.send_command(0x4E) # set RAM x address count to 0
- self.send_data(0x00)
- self.send_command(0x4F) # set RAM y address count to 0X199
- self.send_data(0xC7)
- self.send_data(0x00)
- self.ReadBusy()
- 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(0x24) # DATA_START_TRANSMISSION_1
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(blackimage[i])
-
- # send red data
- if (redimage != None):
- self.send_command(0x26) # DATA_START_TRANSMISSION_2
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(~redimage[i])
- self.send_command(0x22) # DISPLAY_REFRESH
- self.send_data(0xF7)
- self.send_command(0x20) # DISPLAY_REFRESH
- self.ReadBusy()
- def Clear(self):
- self.send_command(0x24) # DATA_START_TRANSMISSION_1
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(0xFF)
-
- self.send_command(0x26) # DATA_START_TRANSMISSION_2
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(0x00)
- self.send_command(0x22) # DISPLAY_REFRESH
- self.send_data(0xF7)
- self.send_command(0x20) # DISPLAY_REFRESH
- self.ReadBusy()
- def sleep(self):
- self.send_command(0x10) #enter deep sleep
- self.send_data(0x01)
- epdconfig.delay_ms(2000)
- epdconfig.module_exit()
- ### END OF FILE ###
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