236 lines
9.2 KiB
Python
236 lines
9.2 KiB
Python
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#!/usr/bin/python
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# -*- coding:utf-8 -*-
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# *****************************************************************************
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# * | File : epd4in01f.py
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# * | Author : Waveshare team
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# * | Function : Electronic paper driver
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# * | Info :
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# *----------------
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# * | This version: V1.0
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# * | Date : 2020-11-06
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# # | Info : python demo
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# -----------------------------------------------------------------------------
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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import logging
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from . import epdconfig
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# Display resolution
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EPD_WIDTH = 640
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EPD_HEIGHT = 400
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logger = logging.getLogger(__name__)
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class EPD:
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def __init__(self):
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self.reset_pin = epdconfig.RST_PIN
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self.dc_pin = epdconfig.DC_PIN
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self.busy_pin = epdconfig.BUSY_PIN
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self.cs_pin = epdconfig.CS_PIN
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self.width = EPD_WIDTH
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self.height = EPD_HEIGHT
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self.BLACK = 0x000000 # 0000 BGR
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self.WHITE = 0xffffff # 0001
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self.GREEN = 0x00ff00 # 0010
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self.BLUE = 0xff0000 # 0011
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self.RED = 0x0000ff # 0100
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self.YELLOW = 0x00ffff # 0101
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self.ORANGE = 0x0080ff # 0110
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# Hardware reset
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def reset(self):
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(200)
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epdconfig.digital_write(self.reset_pin, 0)
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epdconfig.delay_ms(1)
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(200)
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def send_command(self, command):
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epdconfig.digital_write(self.dc_pin, 0)
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epdconfig.digital_write(self.cs_pin, 0)
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epdconfig.spi_writebyte([command])
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epdconfig.digital_write(self.cs_pin, 1)
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def send_data(self, data):
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epdconfig.digital_write(self.dc_pin, 1)
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epdconfig.digital_write(self.cs_pin, 0)
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epdconfig.spi_writebyte([data])
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epdconfig.digital_write(self.cs_pin, 1)
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def ReadBusyHigh(self):
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logger.debug("e-Paper busy")
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while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
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epdconfig.delay_ms(10)
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logger.debug("e-Paper busy release")
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def ReadBusyLow(self):
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logger.debug("e-Paper busy")
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while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
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epdconfig.delay_ms(10)
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logger.debug("e-Paper busy release")
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def init(self):
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if (epdconfig.module_init() != 0):
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return -1
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# EPD hardware init start
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self.reset()
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self.ReadBusyHigh()
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self.send_command(0x00);
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self.send_data(0x2f);
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self.send_data(0x00);
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self.send_command(0x01);
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self.send_data(0x37);
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self.send_data(0x00);
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self.send_data(0x05);
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self.send_data(0x05);
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self.send_command(0x03);
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self.send_data(0x00);
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self.send_command(0x06);
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self.send_data(0xC7);
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self.send_data(0xC7);
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self.send_data(0x1D);
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self.send_command(0x41);
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self.send_data(0x00);
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self.send_command(0x50);
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self.send_data(0x37);
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self.send_command(0x60);
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self.send_data(0x22);
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self.send_command(0x61);
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self.send_data(0x02);
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self.send_data(0x80);
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self.send_data(0x01);
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self.send_data(0x90);
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self.send_command(0xE3);
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self.send_data(0xAA);
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# EPD hardware init end
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return 0
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def getbuffer(self, image):
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buf = [0x00] * int(self.width * self.height / 2)
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image_monocolor = image.convert('RGB')#Picture mode conversion
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imwidth, imheight = image_monocolor.size
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pixels = image_monocolor.load()
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logger.debug('imwidth = %d imheight = %d ',imwidth, imheight)
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if(imwidth == self.width and imheight == self.height):
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for y in range(imheight):
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for x in range(imwidth):
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# Set the bits for the column of pixels at the current position.
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Add = int((x + y * self.width) / 2)
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Color = 0;
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if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
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Color = 0
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255):
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Color = 1
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elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
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Color = 2
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elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255):
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Color = 3
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
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Color = 4
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
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Color = 5
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
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Color = 6
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data_t = buf[Add]&(~(0xF0 >> ((x % 2)*4)))
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buf[Add] = data_t | ((Color << 4) >> ((x % 2)*4));
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elif(imwidth == self.height and imheight == self.width):
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for y in range(imheight):
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for x in range(imwidth):
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newx = y
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newy = self.height - x - 1
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Add = int((newx + newy*self.width) / 2)
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Color = 0;
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if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
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Color = 0
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255):
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Color = 1
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elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
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Color = 2
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elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255):
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Color = 3
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
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Color = 4
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
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Color = 5
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elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
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Color = 6
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data_t = buf[Add]&(~(0xF0 >> ((newx % 2)*4)))
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buf[Add] = data_t | ((Color << 4) >> ((newx % 2)*4));
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return buf
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def display(self,image):
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self.send_command(0x61)#Set Resolution setting
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self.send_data(0x02)
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self.send_data(0x80)
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self.send_data(0x01)
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self.send_data(0x90)
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self.send_command(0x10)
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for i in range(0, int(EPD_HEIGHT)):
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for j in range(0, int(EPD_WIDTH/2)):
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self.send_data((image[j+(int(EPD_WIDTH/2)*i)]))
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self.send_command(0x04)#0x04
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self.ReadBusyHigh()
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self.send_command(0x12)#0x12
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self.ReadBusyHigh()
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self.send_command(0x02) #0x02
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self.ReadBusyLow()
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# epdconfig.delay_ms(500)
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def Clear(self):
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self.send_command(0x61)#Set Resolution setting
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self.send_data(0x02)
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self.send_data(0x80)
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self.send_data(0x01)
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self.send_data(0x90)
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self.send_command(0x10)
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for i in range(0, int(EPD_HEIGHT)):
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for j in range(0, int(EPD_WIDTH/2)):
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self.send_data(0x11)
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#BLACK 0x00 /// 0000
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#WHITE 0x11 /// 0001
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#GREEN 0x22 /// 0010
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#BLUE 0x33 /// 0011
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#RED 0x44 /// 0100
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#YELLOW 0x55 /// 0101
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#ORANGE 0x66 /// 0110
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#CLEAN 0x77 /// 0111 unavailable Afterimage
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self.send_command(0x04)#0x04
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self.ReadBusyHigh()
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self.send_command(0x12)#0x12
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self.ReadBusyHigh()
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self.send_command(0x02) #0x02
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self.ReadBusyLow()
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# epdconfig.delay_ms(500)
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def sleep(self):
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# epdconfig.delay_ms(500)
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self.send_command(0x07) # DEEP_SLEEP
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self.send_data(0XA5)
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epdconfig.delay_ms(2000)
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epdconfig.module_exit()
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