288 lines
9.4 KiB
Python
288 lines
9.4 KiB
Python
# *****************************************************************************
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# * | File : epd7in5.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: V4.0
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# * | Date : 2019-06-20
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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 = 800
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EPD_HEIGHT = 480
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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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# 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(20)
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epdconfig.digital_write(self.reset_pin, 0)
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epdconfig.delay_ms(2)
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epdconfig.digital_write(self.reset_pin, 1)
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epdconfig.delay_ms(20)
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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 send_data2(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.writebytes2(data)
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epdconfig.digital_write(self.cs_pin, 1)
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def ReadBusy(self):
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logger.debug("e-Paper busy")
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self.send_command(0x71)
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busy = epdconfig.digital_read(self.busy_pin)
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while(busy == 0):
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self.send_command(0x71)
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busy = epdconfig.digital_read(self.busy_pin)
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epdconfig.delay_ms(20)
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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.send_command(0x06) # btst
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self.send_data(0x17)
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self.send_data(0x17)
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self.send_data(0x28) # If an exception is displayed, try using 0x38
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self.send_data(0x17)
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self.send_command(0x01) #POWER SETTING
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self.send_data(0x07)
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self.send_data(0x07) #VGH=20V,VGL=-20V
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self.send_data(0x3f) #VDH=15V
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self.send_data(0x3f) #VDL=-15V
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self.send_command(0x04) #POWER ON
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epdconfig.delay_ms(100)
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self.ReadBusy()
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self.send_command(0X00) #PANNEL SETTING
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self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f
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self.send_command(0x61) #tres
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self.send_data(0x03) #source 800
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self.send_data(0x20)
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self.send_data(0x01) #gate 480
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self.send_data(0xE0)
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self.send_command(0X15)
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self.send_data(0x00)
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self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING
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self.send_data(0x10)
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self.send_data(0x07)
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self.send_command(0X60) #TCON SETTING
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self.send_data(0x22)
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# EPD hardware init end
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return 0
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def init_fast(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.send_command(0X00) #PANNEL SETTING
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self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f
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self.send_command(0X50) #VCOM AND DATA INTERVAL SETTING
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self.send_data(0x10)
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self.send_data(0x07)
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self.send_command(0x04) #POWER ON
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epdconfig.delay_ms(100)
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self.ReadBusy() #waiting for the electronic paper IC to release the idle signal
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#Enhanced display drive(Add 0x06 command)
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self.send_command(0x06) #Booster Soft Start
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self.send_data (0x27)
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self.send_data (0x27)
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self.send_data (0x18)
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self.send_data (0x17)
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self.send_command(0xE0)
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self.send_data(0x02)
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self.send_command(0xE5)
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self.send_data(0x5A)
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# EPD hardware init end
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return 0
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def init_part(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.send_command(0X00) #PANNEL SETTING
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self.send_data(0x1F) #KW-3f KWR-2F BWROTP 0f BWOTP 1f
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self.send_command(0x04) #POWER ON
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epdconfig.delay_ms(100)
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self.ReadBusy() #waiting for the electronic paper IC to release the idle signal
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self.send_command(0xE0)
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self.send_data(0x02)
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self.send_command(0xE5)
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self.send_data(0x6E)
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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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img = image
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imwidth, imheight = img.size
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if(imwidth == self.width and imheight == self.height):
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img = img.convert('1')
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elif(imwidth == self.height and imheight == self.width):
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# image has correct dimensions, but needs to be rotated
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img = img.rotate(90, expand=True).convert('1')
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else:
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logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
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# return a blank buffer
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return [0x00] * (int(self.width/8) * self.height)
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buf = bytearray(img.tobytes('raw'))
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# The bytes need to be inverted, because in the PIL world 0=black and 1=white, but
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# in the e-paper world 0=white and 1=black.
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for i in range(len(buf)):
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buf[i] ^= 0xFF
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return buf
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def display(self, image):
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if(self.width % 8 == 0):
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Width = self.width // 8
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else:
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Width = self.width // 8 +1
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Height = self.height
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image1 = [0xFF] * int(self.width * self.height / 8)
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for j in range(Height):
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for i in range(Width):
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image1[i + j * Width] = ~image[i + j * Width]
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self.send_command(0x10)
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self.send_data2(image1)
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self.send_command(0x13)
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self.send_data2(image)
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self.send_command(0x12)
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epdconfig.delay_ms(100)
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self.ReadBusy()
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def Clear(self):
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self.send_command(0x10)
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self.send_data2([0xFF] * int(self.width * self.height / 8))
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self.send_command(0x13)
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self.send_data2([0x00] * int(self.width * self.height / 8))
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self.send_command(0x12)
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epdconfig.delay_ms(100)
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self.ReadBusy()
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def display_Partial(self, Image, Xstart, Ystart, Xend, Yend):
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if((Xstart % 8 + Xend % 8 == 8 & Xstart % 8 > Xend % 8) | Xstart % 8 + Xend % 8 == 0 | (Xend - Xstart)%8 == 0):
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Xstart = Xstart // 8 * 8
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Xend = Xend // 8 * 8
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else:
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Xstart = Xstart // 8 * 8
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if Xend % 8 == 0:
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Xend = Xend // 8 * 8
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else:
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Xend = Xend // 8 * 8 + 1
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Width = (Xend - Xstart) // 8
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Height = Yend - Ystart
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self.send_command(0x50)
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self.send_data(0xA9)
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self.send_data(0x07)
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self.send_command(0x91) #This command makes the display enter partial mode
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self.send_command(0x90) #resolution setting
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self.send_data (Xstart//256)
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self.send_data (Xstart%256) #x-start
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self.send_data ((Xend-1)//256)
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self.send_data ((Xend-1)%256) #x-end
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self.send_data (Ystart//256) #
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self.send_data (Ystart%256) #y-start
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self.send_data ((Yend-1)//256)
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self.send_data ((Yend-1)%256) #y-end
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self.send_data (0x01)
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image1 = [0xFF] * int(self.width * self.height / 8)
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for j in range(Height):
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for i in range(Width):
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image1[i + j * Width] = ~Image[i + j * Width]
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self.send_command(0x13) #Write Black and White image to RAM
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self.send_data2(image1)
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self.send_command(0x12)
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epdconfig.delay_ms(100)
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self.ReadBusy()
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def sleep(self):
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self.send_command(0x02) # POWER_OFF
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self.ReadBusy()
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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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### END OF FILE ###
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