223 lines
8.4 KiB
Python
223 lines
8.4 KiB
Python
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# *****************************************************************************
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# * | File : epd1in54b.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 = 200
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EPD_HEIGHT = 200
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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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lut_vcom0 = [0x0E, 0x14, 0x01, 0x0A, 0x06, 0x04, 0x0A, 0x0A, 0x0F, 0x03, 0x03, 0x0C, 0x06, 0x0A, 0x00]
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lut_w = [0x0E, 0x14, 0x01, 0x0A, 0x46, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x86, 0x0A, 0x04]
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lut_b = [0x0E, 0x14, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x4A, 0x04]
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lut_g1 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04]
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lut_g2 = [0x8E, 0x94, 0x01, 0x8A, 0x06, 0x04, 0x8A, 0x4A, 0x0F, 0x83, 0x43, 0x0C, 0x06, 0x0A, 0x04]
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lut_vcom1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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lut_red0 = [0x83, 0x5D, 0x01, 0x81, 0x48, 0x23, 0x77, 0x77, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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lut_red1 = [0x03, 0x1D, 0x01, 0x01, 0x08, 0x23, 0x37, 0x37, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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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) # module reset
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epdconfig.delay_ms(5)
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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 ReadBusy(self):
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logger.debug("e-Paper busy")
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while(epdconfig.digital_read(self.busy_pin) == 0):
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epdconfig.delay_ms(100)
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logger.debug("e-Paper busy release")
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def set_lut_bw(self):
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self.send_command(0x20) # vcom
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for count in range(0, 15):
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self.send_data(self.lut_vcom0[count])
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self.send_command(0x21) # ww --
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for count in range(0, 15):
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self.send_data(self.lut_w[count])
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self.send_command(0x22) # bw r
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for count in range(0, 15):
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self.send_data(self.lut_b[count])
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self.send_command(0x23) # wb w
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for count in range(0, 15):
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self.send_data(self.lut_g1[count])
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self.send_command(0x24) # bb b
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for count in range(0, 15):
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self.send_data(self.lut_g2[count])
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def set_lut_red(self):
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self.send_command(0x25)
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for count in range(0, 15):
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self.send_data(self.lut_vcom1[count])
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self.send_command(0x26)
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for count in range(0, 15):
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self.send_data(self.lut_red0[count])
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self.send_command(0x27)
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for count in range(0, 15):
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self.send_data(self.lut_red1[count])
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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(0x01) # POWER_SETTING
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self.send_data(0x07)
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self.send_data(0x00)
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self.send_data(0x08)
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self.send_data(0x00)
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self.send_command(0x06) # BOOSTER_SOFT_START
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self.send_data(0x07)
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self.send_data(0x07)
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self.send_data(0x07)
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self.send_command(0x04) # POWER_ON
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self.ReadBusy()
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self.send_command(0X00) # PANEL_SETTING
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self.send_data(0xCF)
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self.send_command(0X50) # VCOM_AND_DATA_INTERVAL_SETTING
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self.send_data(0x17)
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self.send_command(0x30) # PLL_CONTROL
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self.send_data(0x39)
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self.send_command(0x61) # TCON_RESOLUTION set x and y
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self.send_data(0xC8)
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self.send_data(0x00)
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self.send_data(0xC8)
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self.send_command(0x82) # VCM_DC_SETTING_REGISTER
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self.send_data(0x0E)
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self.set_lut_bw()
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self.set_lut_red()
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return 0
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def getbuffer(self, image):
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buf = [0xFF] * int(self.width * self.height / 8)
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# Set buffer to value of Python Imaging Library image.
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# Image must be in mode 1.
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image_monocolor = image.convert('1')
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imwidth, imheight = image_monocolor.size
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if imwidth != self.width or imheight != self.height:
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raise ValueError('Image must be same dimensions as display \
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({0}x{1}).' .format(self.width, self.height))
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pixels = image_monocolor.load()
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for y in range(self.height):
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for x in range(self.width):
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# Set the bits for the column of pixels at the current position.
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if pixels[x, y] == 0:
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buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
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return buf
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def display(self, blackimage, redimage):
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# send black data
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if (blackimage != None):
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self.send_command(0x10) # DATA_START_TRANSMISSION_1
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for i in range(0, int(self.width * self.height / 8)):
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temp = 0x00
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for bit in range(0, 4):
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if (blackimage[i] & (0x80 >> bit) != 0):
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temp |= 0xC0 >> (bit * 2)
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self.send_data(temp)
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temp = 0x00
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for bit in range(4, 8):
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if (blackimage[i] & (0x80 >> bit) != 0):
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temp |= 0xC0 >> ((bit - 4) * 2)
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self.send_data(temp)
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# send red data
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if (redimage != None):
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self.send_command(0x13) # DATA_START_TRANSMISSION_2
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for i in range(0, int(self.width * self.height / 8)):
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self.send_data(redimage[i])
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self.send_command(0x12) # DISPLAY_REFRESH
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self.ReadBusy()
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def Clear(self):
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self.send_command(0x10) # DATA_START_TRANSMISSION_1
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for i in range(0, int(self.width * self.height / 8)):
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self.send_data(0xFF)
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self.send_data(0xFF)
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self.send_command(0x13) # DATA_START_TRANSMISSION_2
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for i in range(0, int(self.width * self.height / 8)):
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self.send_data(0xFF)
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self.send_command(0x12) # DISPLAY_REFRESH
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self.ReadBusy()
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def sleep(self):
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self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
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self.send_data(0x17)
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self.send_command(0x82) # to solve Vcom drop
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self.send_data(0x00)
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self.send_command(0x01) # power setting
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self.send_data(0x02) # gate switch to external
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data(0x00)
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self.ReadBusy()
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self.send_command(0x02) # power off
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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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