Inkycal/inkycal/display/drivers/epdconfig.py

"""
* | File        :	  epdconfig.py
* | Author      :   Waveshare team
* | Function    :   Hardware underlying interface
* | Info        :
*----------------
* | This version:   V1.2
* | Date        :   2022-10-29
* | Info        :

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation 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
import sys
import time

logger = logging.getLogger(__name__)


class RaspberryPi:
    # Pin definition
    RST_PIN = 17
    DC_PIN = 25
    CS_PIN = 8
    BUSY_PIN = 24
    PWR_PIN = 18

    def __init__(self):
        import spidev
        import gpiozero

        self.SPI = spidev.SpiDev()
        self.GPIO_RST_PIN = gpiozero.LED(self.RST_PIN)
        self.GPIO_DC_PIN = gpiozero.LED(self.DC_PIN)
        # self.GPIO_CS_PIN     = gpiozero.LED(self.CS_PIN)
        self.GPIO_PWR_PIN = gpiozero.LED(self.PWR_PIN)
        self.GPIO_BUSY_PIN = gpiozero.Button(self.BUSY_PIN, pull_up=False)

    def digital_write(self, pin, value):
        if pin == self.RST_PIN:
            if value:
                self.GPIO_RST_PIN.on()
            else:
                self.GPIO_RST_PIN.off()
        elif pin == self.DC_PIN:
            if value:
                self.GPIO_DC_PIN.on()
            else:
                self.GPIO_DC_PIN.off()
        # elif pin == self.CS_PIN:
        #     if value:
        #         self.GPIO_CS_PIN.on()
        #     else:
        #         self.GPIO_CS_PIN.off()
        elif pin == self.PWR_PIN:
            if value:
                self.GPIO_PWR_PIN.on()
            else:
                self.GPIO_PWR_PIN.off()

    def digital_read(self, pin):
        if pin == self.BUSY_PIN:
            return self.GPIO_BUSY_PIN.value
        elif pin == self.RST_PIN:
            return self.RST_PIN.value
        elif pin == self.DC_PIN:
            return self.DC_PIN.value
        # elif pin == self.CS_PIN:
        #     return self.CS_PIN.value
        elif pin == self.PWR_PIN:
            return self.PWR_PIN.value

    def delay_ms(self, delaytime):
        time.sleep(delaytime / 1000.0)

    def spi_writebyte(self, data):
        self.SPI.writebytes(data)

    def spi_writebyte2(self, data):
        self.SPI.writebytes2(data)

    def module_init(self):
        self.GPIO_PWR_PIN.on()

        # SPI device, bus = 0, device = 0
        self.SPI.open(0, 0)
        self.SPI.max_speed_hz = 4000000
        self.SPI.mode = 0b00
        return 0

    def module_exit(self, cleanup=False):
        logger.debug("spi end")
        self.SPI.close()

        self.GPIO_RST_PIN.off()
        self.GPIO_DC_PIN.off()
        self.GPIO_PWR_PIN.off()
        logger.debug("close 5V, Module enters 0 power consumption ...")

        if cleanup:
            self.GPIO_RST_PIN.close()
            self.GPIO_DC_PIN.close()
            # self.GPIO_CS_PIN.close()
            self.GPIO_PWR_PIN.close()
            self.GPIO_BUSY_PIN.close()


implementation = RaspberryPi()

for func in [x for x in dir(implementation) if not x.startswith('_')]:
    setattr(sys.modules[__name__], func, getattr(implementation, func))