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- # *****************************************************************************
- # * | File : epd2in7b.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 = 176
- EPD_HEIGHT = 264
- 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
- lut_vcom_dc = [
- 0x00, 0x00,
- 0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01,
- 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10,
- 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
- 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
- 0x00, 0x23, 0x00, 0x00, 0x00, 0x01
- ]
- lut_ww = [
- 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
- 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
- 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
- 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
- 0x00, 0x23, 0x00, 0x00, 0x00, 0x01
- ]
- # R22H r
- lut_bw = [
- 0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01,
- 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
- 0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0xB0, 0x04, 0x10, 0x00, 0x00, 0x05,
- 0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A,
- 0xC0, 0x23, 0x00, 0x00, 0x00, 0x01
- ]
- # R23H w
- lut_bb = [
- 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
- 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
- 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
- 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
- 0x00, 0x23, 0x00, 0x00, 0x00, 0x01
- ]
- # R24H b
- lut_wb = [
- 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01,
- 0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10,
- 0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08,
- 0x00, 0x04, 0x10, 0x00, 0x00, 0x05,
- 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A,
- 0x00, 0x23, 0x00, 0x00, 0x00, 0x01
- ]
- # 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):
- 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 set_lut(self):
- self.send_command(0x20) # vcom
- for count in range(0, 44):
- self.send_data(self.lut_vcom_dc[count])
- self.send_command(0x21) # ww --
- for count in range(0, 42):
- self.send_data(self.lut_ww[count])
- self.send_command(0x22) # bw r
- for count in range(0, 42):
- self.send_data(self.lut_bw[count])
- self.send_command(0x23) # wb w
- for count in range(0, 42):
- self.send_data(self.lut_bb[count])
- self.send_command(0x24) # bb b
- for count in range(0, 42):
- self.send_data(self.lut_wb[count])
-
- def init(self):
- if (epdconfig.module_init() != 0):
- return -1
-
- self.reset()
- self.send_command(0x04) # POWER_ON
- self.ReadBusy()
- self.send_command(0x00) # PANEL_SETTING
- self.send_data(0xaf) #KW-BF KWR-AF BWROTP 0f
-
- self.send_command(0x30) # PLL_CONTROL
- self.send_data(0x3a) #3A 100HZ 29 150Hz 39 200HZ 31 171HZ
- self.send_command(0x01) # POWER_SETTING
- self.send_data(0x03) # VDS_EN, VDG_EN
- self.send_data(0x00) # VCOM_HV, VGHL_LV[1], VGHL_LV[0]
- self.send_data(0x2b) # VDH
- self.send_data(0x2b) # VDL
- self.send_data(0x09) # VDHR
- self.send_command(0x06) # BOOSTER_SOFT_START
- self.send_data(0x07)
- self.send_data(0x07)
- self.send_data(0x17)
- # Power optimization
- self.send_command(0xF8)
- self.send_data(0x60)
- self.send_data(0xA5)
- # Power optimization
- self.send_command(0xF8)
- self.send_data(0x89)
- self.send_data(0xA5)
- # Power optimization
- self.send_command(0xF8)
- self.send_data(0x90)
- self.send_data(0x00)
-
- # Power optimization
- self.send_command(0xF8)
- self.send_data(0x93)
- self.send_data(0x2A)
- # Power optimization
- self.send_command(0xF8)
- self.send_data(0x73)
- self.send_data(0x41)
- self.send_command(0x82) # VCM_DC_SETTING_REGISTER
- self.send_data(0x12)
- self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
- self.send_data(0x87) # define by OTP
- self.set_lut()
- self.send_command(0x16) # PARTIAL_DISPLAY_REFRESH
- self.send_data(0x00)
-
- 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, imageblack, imagered):
- self.send_command(0x10)
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(~imageblack[i])
- self.send_command(0x11)
-
- self.send_command(0x13)
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(~imagered[i])
- self.send_command(0x11)
-
- self.send_command(0x12)
- self.ReadBusy()
-
- def Clear(self, color=0x00):
- self.send_command(0x10)
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(color)
- self.send_command(0x11)
-
- self.send_command(0x13)
- for i in range(0, int(self.width * self.height / 8)):
- self.send_data(color)
- self.send_command(0x11)
-
- self.send_command(0x12)
- self.ReadBusy()
- def sleep(self):
- self.send_command(0X50)
- self.send_data(0xf7)
- self.send_command(0X02)
- self.send_command(0X07)
- self.send_data(0xA5)
-
- epdconfig.delay_ms(2000)
- epdconfig.module_exit()
- ### END OF FILE ###
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