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- # *****************************************************************************
- # * | File : epd2in9.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
- lut_full_update = [
- 0x50, 0xAA, 0x55, 0xAA, 0x11, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0xFF, 0xFF, 0x1F, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ]
- lut_partial_update = [
- 0x10, 0x18, 0x18, 0x08, 0x18, 0x18,
- 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- ]
-
- # 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):
- while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
- epdconfig.delay_ms(200)
- def TurnOnDisplay(self):
- self.send_command(0x22) # DISPLAY_UPDATE_CONTROL_2
- self.send_data(0xC4)
- self.send_command(0x20) # MASTER_ACTIVATION
- self.send_command(0xFF) # TERMINATE_FRAME_READ_WRITE
-
- logger.debug("e-Paper busy")
- self.ReadBusy()
- logger.debug("e-Paper busy release")
- def SetWindow(self, x_start, y_start, x_end, y_end):
- self.send_command(0x44) # SET_RAM_X_ADDRESS_START_END_POSITION
- # x point must be the multiple of 8 or the last 3 bits will be ignored
- self.send_data((x_start >> 3) & 0xFF)
- self.send_data((x_end >> 3) & 0xFF)
- self.send_command(0x45) # SET_RAM_Y_ADDRESS_START_END_POSITION
- self.send_data(y_start & 0xFF)
- self.send_data((y_start >> 8) & 0xFF)
- self.send_data(y_end & 0xFF)
- self.send_data((y_end >> 8) & 0xFF)
- def SetCursor(self, x, y):
- self.send_command(0x4E) # SET_RAM_X_ADDRESS_COUNTER
- # x point must be the multiple of 8 or the last 3 bits will be ignored
- self.send_data((x >> 3) & 0xFF)
- self.send_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER
- self.send_data(y & 0xFF)
- self.send_data((y >> 8) & 0xFF)
- self.ReadBusy()
-
- def init(self, lut):
- if (epdconfig.module_init() != 0):
- return -1
- # EPD hardware init start
- self.reset()
-
- self.send_command(0x01) # DRIVER_OUTPUT_CONTROL
- self.send_data((EPD_HEIGHT - 1) & 0xFF)
- self.send_data(((EPD_HEIGHT - 1) >> 8) & 0xFF)
- self.send_data(0x00) # GD = 0 SM = 0 TB = 0
-
- self.send_command(0x0C) # BOOSTER_SOFT_START_CONTROL
- self.send_data(0xD7)
- self.send_data(0xD6)
- self.send_data(0x9D)
-
- self.send_command(0x2C) # WRITE_VCOM_REGISTER
- self.send_data(0xA8) # VCOM 7C
-
- self.send_command(0x3A) # SET_DUMMY_LINE_PERIOD
- self.send_data(0x1A) # 4 dummy lines per gate
-
- self.send_command(0x3B) # SET_GATE_TIME
- self.send_data(0x08) # 2us per line
-
- self.send_command(0x11) # DATA_ENTRY_MODE_SETTING
- self.send_data(0x03) # X increment Y increment
-
- self.send_command(0x32) # WRITE_LUT_REGISTER
- for i in range(0, len(lut)):
- self.send_data(lut[i])
- # EPD hardware init end
- 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, image):
- if (image == None):
- return
- self.SetWindow(0, 0, self.width - 1, self.height - 1)
- for j in range(0, self.height):
- self.SetCursor(0, j)
- self.send_command(0x24) # WRITE_RAM
- for i in range(0, int(self.width / 8)):
- self.send_data(image[i + j * int(self.width / 8)])
- self.TurnOnDisplay()
-
- def Clear(self, color):
- self.SetWindow(0, 0, self.width - 1, self.height - 1)
- for j in range(0, self.height):
- self.SetCursor(0, j)
- self.send_command(0x24) # WRITE_RAM
- for i in range(0, int(self.width / 8)):
- self.send_data(color)
- self.TurnOnDisplay()
- def sleep(self):
- self.send_command(0x10) # DEEP_SLEEP_MODE
- self.send_data(0x01)
-
- epdconfig.delay_ms(2000)
- epdconfig.module_exit()
- ### END OF FILE ###
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