rtc.ntp_sync restart after 30 seconds?

[Wolli01]

How can it be done, that no internet connection to the time server will cause a restart after 30 seconds?
This is my current code.

rtc.ntp_sync("de.pool.ntp.org")
while not rtc.synced():
machine.idle() # save power while waiting
utime.timezone(TimeDiff)
time1 = utime.localtime() # Übergabe Datum und
break

[robert-hh]

@Wolli01 So I understand that you code is:

rtc.ntp_sync("de.pool.ntp.org")
while not rtc.synced():
    machine.idle() # save power while waiting
utime.timezone(TimeDiff)
time1 = utime.localtime() # Übergabe Datum und
break

So why the break at the. Is there another while loop which you do not show?

[Wolli01]

@robert-hh No there are no more loops

[robert-hh]

@Wolli01 SO I extended your code snippet to a short test script:

import utime
import machine
rtc=machine.RTC()

TimeDiff = 0

rtc.ntp_sync("de.pool.ntp.org")
while not rtc.synced():
    machine.idle() # save power while waiting
utime.timezone(TimeDiff)
time1 = utime.localtime() # Übergabe Datum und
print(time1)

That works, does not restart after 30 seconds, but waits forever, if not WiFi is present. I disabled WIFi by calling disconnect().
Pycom MicroPython 1.20.0.rc13 [1211d6c-dirty] on 2019-08-23; FiPy with ESP32

[Wolli01]

@robert-hh Apart from the last line, what's the difference?

[robert-hh]

@Wolli01 The break in your code should simply cause an error while parsing:
SyntaxError: 'break' outside loop