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- #!/usr/bin/python
- # -*- coding:utf-8 -*-
- # *****************************************************************************
- # * | File : epd4in01f.py
- # * | Author : Waveshare team
- # * | Function : Electronic paper driver
- # * | Info :
- # *----------------
- # * | This version: V1.0
- # * | Date : 2020-11-06
- # # | 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 = 400
- 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
- self.BLACK = 0x000000 # 0000 BGR
- self.WHITE = 0xffffff # 0001
- self.GREEN = 0x00ff00 # 0010
- self.BLUE = 0xff0000 # 0011
- self.RED = 0x0000ff # 0100
- self.YELLOW = 0x00ffff # 0101
- self.ORANGE = 0x0080ff # 0110
-
-
- # 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(1)
- 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 ReadBusyHigh(self):
- logger.debug("e-Paper busy")
- while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
- epdconfig.delay_ms(10)
- logger.debug("e-Paper busy release")
-
- def ReadBusyLow(self):
- logger.debug("e-Paper busy")
- while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
- epdconfig.delay_ms(10)
- logger.debug("e-Paper busy release")
-
- def init(self):
- if (epdconfig.module_init() != 0):
- return -1
- # EPD hardware init start
- self.reset()
-
- self.ReadBusyHigh()
- self.send_command(0x00);
- self.send_data(0x2f);
- self.send_data(0x00);
- self.send_command(0x01);
- self.send_data(0x37);
- self.send_data(0x00);
- self.send_data(0x05);
- self.send_data(0x05);
- self.send_command(0x03);
- self.send_data(0x00);
- self.send_command(0x06);
- self.send_data(0xC7);
- self.send_data(0xC7);
- self.send_data(0x1D);
- self.send_command(0x41);
- self.send_data(0x00);
- self.send_command(0x50);
- self.send_data(0x37);
- self.send_command(0x60);
- self.send_data(0x22);
- self.send_command(0x61);
- self.send_data(0x02);
- self.send_data(0x80);
- self.send_data(0x01);
- self.send_data(0x90);
- self.send_command(0xE3);
- self.send_data(0xAA);
-
- # EPD hardware init end
- return 0
- def getbuffer(self, image):
- buf = [0x00] * int(self.width * self.height / 2)
- image_monocolor = image.convert('RGB')#Picture mode conversion
- 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):
- for y in range(imheight):
- for x in range(imwidth):
- # Set the bits for the column of pixels at the current position.
- Add = int((x + y * self.width) / 2)
- Color = 0;
- if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
- Color = 0
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255):
- Color = 1
- elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
- Color = 2
- elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255):
- Color = 3
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
- Color = 4
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
- Color = 5
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
- Color = 6
-
- data_t = buf[Add]&(~(0xF0 >> ((x % 2)*4)))
- buf[Add] = data_t | ((Color << 4) >> ((x % 2)*4));
-
- elif(imwidth == self.height and imheight == self.width):
- for y in range(imheight):
- for x in range(imwidth):
- newx = y
- newy = self.height - x - 1
- Add = int((newx + newy*self.width) / 2)
- Color = 0;
- if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
- Color = 0
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255):
- Color = 1
- elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
- Color = 2
- elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255):
- Color = 3
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
- Color = 4
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
- Color = 5
- elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
- Color = 6
-
- data_t = buf[Add]&(~(0xF0 >> ((newx % 2)*4)))
- buf[Add] = data_t | ((Color << 4) >> ((newx % 2)*4));
- return buf
- def display(self,image):
- self.send_command(0x61)#Set Resolution setting
- self.send_data(0x02)
- self.send_data(0x80)
- self.send_data(0x01)
- self.send_data(0x90)
- self.send_command(0x10)
- for i in range(0, int(EPD_HEIGHT)):
- for j in range(0, int(EPD_WIDTH/2)):
- self.send_data((image[j+(int(EPD_WIDTH/2)*i)]))
- self.send_command(0x04)#0x04
- self.ReadBusyHigh()
- self.send_command(0x12)#0x12
- self.ReadBusyHigh()
- self.send_command(0x02) #0x02
- self.ReadBusyLow()
- # epdconfig.delay_ms(500)
-
- def Clear(self):
- self.send_command(0x61)#Set Resolution setting
- self.send_data(0x02)
- self.send_data(0x80)
- self.send_data(0x01)
- self.send_data(0x90)
- self.send_command(0x10)
- for i in range(0, int(EPD_HEIGHT)):
- for j in range(0, int(EPD_WIDTH/2)):
- self.send_data(0x11)
- #BLACK 0x00 /// 0000
- #WHITE 0x11 /// 0001
- #GREEN 0x22 /// 0010
- #BLUE 0x33 /// 0011
- #RED 0x44 /// 0100
- #YELLOW 0x55 /// 0101
- #ORANGE 0x66 /// 0110
- #CLEAN 0x77 /// 0111 unavailable Afterimage
- self.send_command(0x04)#0x04
- self.ReadBusyHigh()
- self.send_command(0x12)#0x12
- self.ReadBusyHigh()
- self.send_command(0x02) #0x02
- self.ReadBusyLow()
- # epdconfig.delay_ms(500)
- def sleep(self):
- # epdconfig.delay_ms(500)
- self.send_command(0x07) # DEEP_SLEEP
- self.send_data(0XA5)
- epdconfig.delay_ms(2000)
- epdconfig.module_exit()
-
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