import machine, time

class DS_RTC:
    
    second: int 
    minute: int
    hour: int

    dayOfWeek: int = 6

    dayOfMonth: int = 1
    month: int = 1
    year: int 
    
    def __decToBcd(self, val):
        return (value or 0) + 6 * ((value or 0) // 10)

    def __bcdToDec(self, val):
        return (val or 0) - 6 * ((val or 0) >> 4)

    def init(self, sda_pin=16, scl_pin=17, port=0, speed=100000, address=0x68, register=0x00):
        self.rtc_address = address  
        self.rtc_register = register 
        sda = machine.Pin(sda_pin)  
        scl = machine.Pin(scl_pin)  
        self.i2c = machine.I2C(port, sda=sda, scl=scl, freq=speed)  

    def readTime(self):
        buffer = self.i2c.readfrom_mem(self.rtc_address, self.rtc_register, 7)
        self.second = self.__bcdToDec(buffer[0] & 0x7f)
        self.minute = self.__bcdToDec(buffer[1])
        self.hour = self.__bcdToDec(buffer[2] & 0x3f)

        self.dayOfWeek = self.__bcdToDec(buffer[3])

        self.dayOfMonth = (buffer[4])
        self.month = self.__bcdToDec(buffer[5])
        self.year = self.__bcdToDec(buffer[6])
    
    def setTime(self, ss,mm,hh,ww,d,m,y):
        buffer = [ 0x00 , __decToBcd(ss), __decToBcd(mm),__decToBcd(hh),__decToBcd(ww),__decToBcd(d),__decToBcd(m),__decToBcd(y)]
        self.i2c.writeto_mem(int(self.rtc_address), int(self.rtc_register), buffer)


rtc = DS_RTC()
rtc.init()

while True: 
    rtc.readTime()
    print(rtc.year+2000)
    print(rtc.month)
    print(rtc.dayOfMonth)

    print(rtc.dayOfWeek)

    print(rtc.hour)
    print(rtc.minute)
    print(rtc.second)
    time.sleep(1)