Hello,
i use the RTC of the BC66 to wake up the module every 30 min. This works good for the first 3-4 days. Then it begins, that the module wakes up a third time every hour.
I startet the module, so that it wakes up every 30min at xx:10 and xx:40. Suddenley it started to wakeup also at xx:41. See my log in attached PDF.
The extra wakeup is drifting as you can see.
I also added the code, how i registered the RTC.
Why does this extra wakeup happen after some time?
I tried it several times with BC66NB and BC66NA. Both has the same issue.
register_rtc.pdf (232.4 KB)
WakeUpTime.pdf (350.6 KB)