Inkycal/inkycal/display/drivers/epd_4_in_2_colour.py

"""
* | File        :	  epd4in2bc.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 inkycal.display.drivers import epdconfig

# Display resolution
EPD_WIDTH = 400
EPD_HEIGHT = 300


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

    # 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)  # support v2 displays in favor of v1 displays.Change this to 10 for legacy v1 display support
        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):
        logging.debug("e-Paper busy")
        while (epdconfig.digital_read(self.busy_pin) == 0):  # 0: idle, 1: busy
            epdconfig.delay_ms(100)
        logging.debug("e-Paper busy release")

    def init(self):
        if (epdconfig.module_init() != 0):
            return -1

        self.reset()

        self.send_command(0x06)  # BOOSTER_SOFT_START
        self.send_data(0x17)
        self.send_data(0x17)
        self.send_data(0x17)  # 07 0f 17 1f 27 2F 37 2f

        self.send_command(0x04)  # POWER_ON
        self.ReadBusy()

        self.send_command(0x00)  # PANEL_SETTING
        self.send_data(0x0F)  # LUT from OTP

        return 0

    def getbuffer(self, image):
        # logging.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()
        # logging.debug("imwidth = %d, imheight = %d",imwidth,imheight)
        if (imwidth == self.width and imheight == self.height):
            logging.debug("Horizontal")
            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):
            logging.debug("Vertical")
            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, imageblack, imagered):
        self.send_command(0x10)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(imageblack[i])

        self.send_command(0x13)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(imagered[i])

        self.send_command(0x12)
        self.ReadBusy()

    def Clear(self):
        self.send_command(0x10)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(0xFF)

        self.send_command(0x13)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(0xFF)

        self.send_command(0x12)
        self.ReadBusy()

    def sleep(self):
        self.send_command(0x02)  # POWER_OFF
        self.ReadBusy()
        self.send_command(0x07)  # DEEP_SLEEP
        self.send_data(0xA5)  # check code

        epdconfig.module_exit()
### END OF FILE ###