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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 = 640
- EPD_HEIGHT = 384
- 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 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
- 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.send_command(0x01) # POWER_SETTING
- self.send_data2([0x37, 0x00])
-
- self.send_command(0x00) # PANEL_SETTING
- self.send_data2([0xCF, 0x08])
-
- self.send_command(0x06) # BOOSTER_SOFT_START
- self.send_data2([0xc7, 0xcc, 0x28])
-
- self.send_command(0x04) # POWER_ON
- self.ReadBusy()
-
- self.send_command(0x30) # PLL_CONTROL
- self.send_data(0x3c)
-
- self.send_command(0x41) # TEMPERATURE_CALIBRATION
- self.send_data(0x00)
-
- self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
- self.send_data(0x77)
-
- self.send_command(0x60) # TCON_SETTING
- self.send_data(0x22)
-
- self.send_command(0x61) # TCON_RESOLUTION
- self.send_data(EPD_WIDTH >> 8) #source 640
- self.send_data(EPD_WIDTH & 0xff)
- self.send_data(EPD_HEIGHT >> 8) #gate 384
- self.send_data(EPD_HEIGHT & 0xff)
-
- self.send_command(0x82) # VCM_DC_SETTING
- self.send_data(0x1E) # decide by LUT file
-
- self.send_command(0xe5) # FLASH MODE
- self.send_data(0x03)
-
- # EPD hardware init end
- return 0
- def getbuffer(self, image):
- img = image
- imwidth, imheight = img.size
- halfwidth = int(self.width / 2)
- buf = [0x33] * halfwidth * self.height
-
- 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')
- imwidth, imheight = img.size
- else:
- logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
- # return a blank buffer
- return buf
-
- pixels = img.load()
- for y in range(imheight):
- offset = y * halfwidth
- for x in range(1, imwidth, 2):
- i = offset + x // 2
- if(pixels[x-1, y] > 191):
- if(pixels[x, y] > 191):
- buf[i] = 0x33
- else:
- buf[i] = 0x30
- else:
- if(pixels[x, y] > 191):
- buf[i] = 0x03
- else:
- buf[i] = 0x00
- return buf
-
- def display(self, image):
- self.send_command(0x10)
- self.send_data2(image)
- self.send_command(0x12)
- epdconfig.delay_ms(100)
- self.ReadBusy()
-
- def Clear(self):
- buf = [0x33] * int(self.width * self.height / 2)
- self.send_command(0x10)
- self.send_data2(buf)
- 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 ###
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