# Vasilenko Dmitriy K070922/1

from machine import Pin
from utime import sleep

print("Hello, ESP32!")

led = Pin(15, Pin.OUT)

from machine import Pin, I2C

# i2c = I2C(0)
i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400000)
print(i2c.scan())

from ds1307 import DS1307
from machine import I2C, Pin
from time import gmtime, time

# DS1307 on 0x68
I2C_ADDR = 0x68     # DEC 104, HEX 0x68

# define custom I2C interface, default is 'I2C(0)'
# check the docs of your device for further details and pin infos
# this are the pins for the Raspberry Pi Pico adapter board
ds1307 = DS1307(addr=I2C_ADDR, i2c=i2c)

# Print the date and time in ISO8601 format: 2023-04-18T21:14:22
print("Today is {:04d}-{:02d}-{:02d}T{:02d}:{:02d}:{:02d}".format(
    ds1307.year, ds1307.month, ds1307.day,
    ds1307.hour, ds1307.minute, ds1307.second))


from ssd1306 import SSD1306_I2C
oled = SSD1306_I2C(128, 64, i2c)


while True:
    if ds1307.weekday in (0, 2, 4) and 9 <= ds1307.hour <= 18:
        if ds1307.second < 11:
            led.on()

            for second in range(10, -1, -1):
                oled.text(str(second), 0, 10)
                oled.show()

                sleep(1)

                oled.fill(0)
            oled.show()
        else:
            led.off()



main.py

diagram.json

#!/usr/bin/env python3
# -*- coding: UTF-8 -*-

"""
I2C RTC driver for DS1307

https://github.com/mcauser/micropython-tinyrtc-i2c

MIT License
Copyright (c) 2018 Mike Causer
Extended 2023 by brainelectronics

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
furnished 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 FOR 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.

BCD Format:
https://en.wikipedia.org/wiki/Binary-coded_decimal
"""

# system packages
from machine import I2C
try:
    from micropython import const
except ImportError:
    def const(x):
        return x


class _Subscriptable():
    def __getitem__(self, item):
        return None


_subscriptable = _Subscriptable()

Optional = _subscriptable
Tuple = _subscriptable

DATETIME_REG = const(0)     # 0x00-0x06
CHIP_HALT = const(128)
CONTROL_REG = const(7)      # 0x07
RAM_REG = const(8)          # 0x08-0x3F


class DS1307(object):
    """Driver for the DS1307 RTC."""

    def __init__(self, addr=0x68, i2c: Optional[I2C] = None) -> None:
        """
        Constructs a new instance

        :param      addr:   The I2C bus address of the EEPROM
        :type       addr:   int
        :param      i2c:    I2C object
        :type       i2c:    I2C
        """
        self._addr = addr

        if i2c is None:
            # default assignment, check the docs
            self._i2c = I2C(0)
        else:
            self._i2c = i2c

        self._weekday_start = 0
        self._halt = False

    @property
    def addr(self) -> int:
        """
        Get the DS1307 I2C bus address

        :returns:   DS1307 I2C bus address
        :rtype:     int
        """
        return self._addr

    @property
    def weekday_start(self) -> int:
        """
        Get the start of the weekday

        :returns:   Weekday start
        :rtype:     int
        """
        return self._weekday_start

    @weekday_start.setter
    def weekday_start(self, value: int) -> None:
        """Set the start of the weekday"""
        if 0 <= value <= 6:
            self._weekday_start = value
        else:
            raise ValueError("Weekday can only be in range 0-6")

    @property
    def datetime(self) -> Tuple[int, int, int, int, int, int, int, int]:
        """
        Get the current datetime

        (2023, 4, 18, 0, 10, 34, 4, 108)
        y,     m,  d, h, m,  s, wd, yd

        :returns:   (year, month, day, hour, minute, second, weekday, yearday)
        :rtype:     Tuple[int, int, int, int, int, int, int, int]
        """
        buf = bytearray(7)

        buf = self._i2c.readfrom_mem(self._addr, DATETIME_REG, 7)

        year = self._bcd_to_dec(buf[6]) + 2000
        month = self._bcd_to_dec(buf[5])
        day = self._bcd_to_dec(buf[4])
        yearday = self.day_of_year(year=year, month=month, day=day)
        return (
            year,
            month,
            day,
            self._bcd_to_dec(buf[2]),           # hour
            self._bcd_to_dec(buf[1]),           # minute
            self._bcd_to_dec(buf[0] & 0x7F),    # second
            self._bcd_to_dec(buf[3] - self._weekday_start),     # weekday
            yearday,
        )

    @datetime.setter
    def datetime(self, datetime: Tuple[int, int, int, int, int, int, int, int]) -> None:    # noqa: E501
        """
        Set datetime

        (2023, 4, 18, 20, 23, 38, 1, 108) by time.gmtime(time.time())
        y,     m,  d,  h, min,sec,wday, yday
        0,     1,  2,  3,  4,   5,   6, 7

        :param      datetime:  The datetime
        :type       datetime:  Tuple[int, int, int, int, int, int, int, int]
        """
        buf = bytearray(7)

        # msb = CH, 1 = halt, 0 = go
        buf[0] = self._dec_to_bcd(datetime[5]) & 0x7F   # second
        buf[1] = self._dec_to_bcd(datetime[4])  # minute
        buf[2] = self._dec_to_bcd(datetime[3])  # hour
        buf[3] = self._dec_to_bcd(datetime[6] + self._weekday_start)
        buf[4] = self._dec_to_bcd(datetime[2])  # day
        buf[5] = self._dec_to_bcd(datetime[1])  # month
        buf[6] = self._dec_to_bcd(datetime[0] - 2000)   # year

        if (self._halt):
            buf[0] |= (1 << 7)

        self._i2c.writeto_mem(self._addr, DATETIME_REG, buf)

    @property
    def year(self) -> int:
        """
        Get the year from the RTC

        :returns:   Year of RTC
        :rtype:     int
        """
        return self.datetime[0]

    @property
    def month(self) -> int:
        """
        Get the month from the RTC

        :returns:   Month of RTC
        :rtype:     int
        """
        return self.datetime[1]

    @property
    def day(self) -> int:
        """
        Get the day from the RTC

        :returns:   Day of RTC
        :rtype:     int
        """
        return self.datetime[2]

    @property
    def hour(self) -> int:
        """
        Get the hour from the RTC

        :returns:   Hour of RTC
        :rtype:     int
        """
        return self.datetime[3]

    @property
    def minute(self) -> int:
        """
        Get the minute from the RTC

        :returns:   Minute of RTC
        :rtype:     int
        """
        return self.datetime[4]

    @property
    def second(self) -> int:
        """
        Get the second from the RTC

        :returns:   Second of RTC
        :rtype:     int
        """
        return self.datetime[5]

    @property
    def weekday(self) -> int:
        """
        Get the weekday from the RTC

        :returns:   Weekday of RTC
        :rtype:     int
        """
        return self.datetime[6]

    @property
    def yearday(self) -> int:
        """
        Get the yearday from the RTC

        :returns:   Yearday of RTC
        :rtype:     int
        """
        return self.datetime[7]

    def is_leap_year(self, year: int) -> bool:
        """
        Determines whether the specified year is a leap year.

        :param      year:  The year
        :type       year:  int

        :returns:   True if the specified year is leap year, False otherwise.
        :rtype:     bool
        """
        return (year % 4 == 0)

    def day_of_year(self, year: int, month: int, day: int) -> int:
        """
        Get the day of the year

        :param      year:   The year
        :type       year:   int
        :param      month:  The month
        :type       month:  int
        :param      day:    The day
        :type       day:    int

        :returns:   Day of the year, January 1 is day 1
        :rtype:     int
        """
        month_days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        year -= 2000
        days16 = day

        for x in range(1, month):
            days16 += month_days[x - 1]

        if month >= 2 and self.is_leap_year(year=year):
            days16 += 1

        return days16

    @property
    def halt(self) -> bool:
        """
        Get status of DS1307

        :returns:   Status of DS1307
        :rtype:     bool
        """
        return self._halt

    @halt.setter
    def halt(self, value: bool = False) -> None:
        """
        Power up or power down the RTC oscillator

        :param      value:  The value
        :type       value:  bool
        """
        reg = self._i2c.readfrom_mem(self._addr, DATETIME_REG, 1)[0]

        if value:
            reg |= CHIP_HALT
        else:
            reg &= ~CHIP_HALT

        self._halt = bool(value)
        self._i2c.writeto_mem(self._addr, DATETIME_REG, bytearray([reg]))

    def square_wave(self, sqw: int = 0, out: int = 0) -> None:
        """
        Output square wave on pin SQ

        at 1Hz, 4.096kHz, 8.192kHz or 32.768kHz, or disable the oscillator
        and output logic level high/low.
        """
        if sqw not in (0, 1, 4, 8, 32):
            raise ValueError(
                "Squarewave can be set to 0Hz, 1Hz, {}Hz, {}Hz or {}Hz".format(
                    2 ** 12, 2 ** 13, 2 ** 15)
            )

        rs0 = 1 if sqw == 4 or sqw == 32 else 0
        rs1 = 1 if sqw == 8 or sqw == 32 else 0
        out = 1 if out > 0 else 0
        sqw = 1 if sqw > 0 else 0

        reg = rs0 | rs1 << 1 | sqw << 4 | out << 7

        self._i2c.writeto_mem(self._addr, CONTROL_REG, bytearray([reg]))

    def _dec_to_bcd(self, value: int) -> int:
        """
        Convert decimal to binary coded decimal (BCD) format

        :param      value:  The value
        :type       value:  int

        :returns:   Binary coded decimal (BCD) format
        :rtype:     int
        """
        return (value // 10) << 4 | (value % 10)

    def _bcd_to_dec(self, value: int) -> int:
        """
        Convert binary coded decimal (BCD) format to decimal

        :param      value:  The value
        :type       value:  int

        :returns:   Decimal value
        :rtype:     int
        """
        return ((value >> 4) * 10) + (value & 0x0F)

ds1307.py

# MicroPython SSD1306 OLED driver, I2C and SPI interfaces

from micropython import const
import framebuf


# register definitions
SET_CONTRAST = const(0x81)
SET_ENTIRE_ON = const(0xA4)
SET_NORM_INV = const(0xA6)
SET_DISP = const(0xAE)
SET_MEM_ADDR = const(0x20)
SET_COL_ADDR = const(0x21)
SET_PAGE_ADDR = const(0x22)
SET_DISP_START_LINE = const(0x40)
SET_SEG_REMAP = const(0xA0)
SET_MUX_RATIO = const(0xA8)
SET_COM_OUT_DIR = const(0xC0)
SET_DISP_OFFSET = const(0xD3)
SET_COM_PIN_CFG = const(0xDA)
SET_DISP_CLK_DIV = const(0xD5)
SET_PRECHARGE = const(0xD9)
SET_VCOM_DESEL = const(0xDB)
SET_CHARGE_PUMP = const(0x8D)

# Subclassing FrameBuffer provides support for graphics primitives
# http://docs.micropython.org/en/latest/pyboard/library/framebuf.html
class SSD1306(framebuf.FrameBuffer):
    def __init__(self, width, height, external_vcc):
        self.width = width
        self.height = height
        self.external_vcc = external_vcc
        self.pages = self.height // 8
        self.buffer = bytearray(self.pages * self.width)
        super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
        self.init_display()

    def init_display(self):
        for cmd in (
            SET_DISP | 0x00,  # off
            # address setting
            SET_MEM_ADDR,
            0x00,  # horizontal
            # resolution and layout
            SET_DISP_START_LINE | 0x00,
            SET_SEG_REMAP | 0x01,  # column addr 127 mapped to SEG0
            SET_MUX_RATIO,
            self.height - 1,
            SET_COM_OUT_DIR | 0x08,  # scan from COM[N] to COM0
            SET_DISP_OFFSET,
            0x00,
            SET_COM_PIN_CFG,
            0x02 if self.width > 2 * self.height else 0x12,
            # timing and driving scheme
            SET_DISP_CLK_DIV,
            0x80,
            SET_PRECHARGE,
            0x22 if self.external_vcc else 0xF1,
            SET_VCOM_DESEL,
            0x30,  # 0.83*Vcc
            # display
            SET_CONTRAST,
            0xFF,  # maximum
            SET_ENTIRE_ON,  # output follows RAM contents
            SET_NORM_INV,  # not inverted
            # charge pump
            SET_CHARGE_PUMP,
            0x10 if self.external_vcc else 0x14,
            SET_DISP | 0x01,
        ):  # on
            self.write_cmd(cmd)
        self.fill(0)
        self.show()

    def poweroff(self):
        self.write_cmd(SET_DISP | 0x00)

    def poweron(self):
        self.write_cmd(SET_DISP | 0x01)

    def contrast(self, contrast):
        self.write_cmd(SET_CONTRAST)
        self.write_cmd(contrast)

    def invert(self, invert):
        self.write_cmd(SET_NORM_INV | (invert & 1))

    def show(self):
        x0 = 0
        x1 = self.width - 1
        if self.width == 64:
            # displays with width of 64 pixels are shifted by 32
            x0 += 32
            x1 += 32
        self.write_cmd(SET_COL_ADDR)
        self.write_cmd(x0)
        self.write_cmd(x1)
        self.write_cmd(SET_PAGE_ADDR)
        self.write_cmd(0)
        self.write_cmd(self.pages - 1)
        self.write_data(self.buffer)


class SSD1306_I2C(SSD1306):
    def __init__(self, width, height, i2c, addr=0x3C, external_vcc=False):
        self.i2c = i2c
        self.addr = addr
        self.temp = bytearray(2)
        self.write_list = [b"\x40", None]  # Co=0, D/C#=1
        super().__init__(width, height, external_vcc)

    def write_cmd(self, cmd):
        self.temp[0] = 0x80  # Co=1, D/C#=0
        self.temp[1] = cmd
        self.i2c.writeto(self.addr, self.temp)

    def write_data(self, buf):
        self.write_list[1] = buf
        self.i2c.writevto(self.addr, self.write_list)


class SSD1306_SPI(SSD1306):
    def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):
        self.rate = 10 * 1024 * 1024
        dc.init(dc.OUT, value=0)
        res.init(res.OUT, value=0)
        cs.init(cs.OUT, value=1)
        self.spi = spi
        self.dc = dc
        self.res = res
        self.cs = cs
        import time

        self.res(1)
        time.sleep_ms(1)
        self.res(0)
        time.sleep_ms(10)
        self.res(1)
        super().__init__(width, height, external_vcc)

    def write_cmd(self, cmd):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs(1)
        self.dc(0)
        self.cs(0)
        self.spi.write(bytearray([cmd]))
        self.cs(1)

    def write_data(self, buf):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs(1)
        self.dc(1)
        self.cs(0)
        self.spi.write(buf)
        self.cs(1)