RTC time does not survive WDT

[Clemens]

We have a solar powered project that saves time stamped data (arround 5 datasets per minute) to SD and send it via a mobile WiFi hotspot that is "driving" to the node in a weekly base to a server.

Now we discovered that a wdt reset does reset all time information and time does not survive the watchdog. So time stamping is no more possible after a WDT event.

Any change to keep the time? Or is the only solution an additional external RTC?

[Clemens]

In the meantime I found also https://forum.pycom.io/topic/4146/wdt-reset-rtc-also-reset