ESP 32 Micropython RTC Modul DS3231 mit NTP synchronisieren

"""
 DS3231 stellen auf MEZ

"""  
import time
from time import sleep
import network
import credentials
from machine import RTC
import ds3231
import ntptime
import urtc
#32 clock
#33 data
from machine import I2C, Pin
i2c = I2C(0, scl=Pin(32), sda=Pin(33))

SSID = credentials.SSID
PASSWORD = credentials.PASSWORD

station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(SSID, PASSWORD)
sleep(5)
print('Connection successful')
print(station.ifconfig())

ntptime.settime()
time.localtime()
localtime= time.localtime(time.time())

akt_zeit=time.localtime(time.time())
print (" aktuelle Zeit MEZ",akt_zeit)
 
days_of_week = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

rtc = urtc.DS3231(i2c)

initial_time_tuple = time.localtime()  # tuple (microPython)
initial_time_seconds = time.mktime(initial_time_tuple)  # local time in seconds

# Convert to tuple compatible with the library
initial_time = urtc.seconds2tuple(initial_time_seconds)

# Sync the RTC
rtc.datetime(initial_time)
current_datetime = rtc.datetime()

print('Current date and time:')
print('Year:', current_datetime.year)
print('Month:', current_datetime.month)
print('Day:', current_datetime.day)
print('Hour:', current_datetime.hour )
print('Minute:', current_datetime.minute)
print('Second:', current_datetime.second)
print('Day of the Week:', days_of_week[current_datetime.weekday])

>>> %Run -c $EDITOR_CONTENT

MPY: soft reboot
('192.168.178.153', '255.255.255.0', '192.168.178.1', '192.168.178.1')
Current date and time:
Year: 2026
Month: 8
Day: 3
Hour: 19
Minute: 33
Second: 30
Day of the Week: Monday
Monat   8
21 33 30
Connection successful
('192.168.178.153', '255.255.255.0', '192.168.178.1', '192.168.178.1')
 aktuelle Zeit MEZ (2026, 8, 3, 17, 33, 39, 0, 215)
Current date and time:
Year: 2026
Month: 8
Day: 3
Hour: 17
Minute: 33
Second: 39
Day of the Week: Monday

# boot.py für VictronMon Solarregler 05.08.26 mit Zeitabfrage

import esp
import network
import webrepl
import machine
import time
from time import sleep
from machine import I2C, Pin
from machine import SoftI2C
import utime
import credentials

#i2c = SoftI2C(scl=Pin(33), sda=Pin(32))	#, freq=100000)
i2c = I2C(0, scl=Pin(33), sda=Pin(32))	#, freq=100000)
DS3231_I2C_ADDR = 0x68
i2c.scan()
stunde = ()
esp.osdebug(None)
SSID = credentials.SSID
PASSWORD = credentials.PASSWORD


station = network.WLAN(network.STA_IF)
#station.active(True)
#station.active(False)
station.active(True)
station.connect(SSID, PASSWORD)
sleep(5)
print('Connection successful')
print("  30  ",station.ifconfig())
        
def bcd2dec(b):
    return (b // 16) * 10 + (b % 16)

def zeit_setzen():
    data = i2c.readfrom_mem(DS3231_I2C_ADDR, 0x00, 7)
    sleep(3)
    sekunde = bcd2dec(data[0])
    minute = bcd2dec(data[1])
    monat = bcd2dec(data[5] & 0x1f)
    stunde =bcd2dec(data[2] & 0x3f)
    #print("Stunde MEZ  :", stunde)
    zeitzone = 1
    #print ("Monat  ", monat)
    if (monat >=4) and (monat <=10):
        zeitzone = 2
    stunde = bcd2dec(data[2]+zeitzone & 0x3f)  # 24h-Format
    tag = bcd2dec(data[4])
    jahr = bcd2dec(data[6]) + 2000
    #print ("stunde nach Korrektur Sommer-Winter  ", stunde)
    #return jahr, monat, tag, stunde, minute, sekunde
    return stunde, minute, sekunde


utime.sleep(5)

stunde, minute, sekunde = zeit_setzen()

print("boot 34 ",stunde, minute, sekunde)

#webrepl.start()