RTC useless ?

[jms]

The transcript shows that the clock ran for about an hour after being set. It certainly seems to run at normal ish speed for some minutes after being set but is it otherwise useless ?

Code: Select all

>>> ntptime.settime()
(2016, 6, 20, 16, 51, 59, 0, 172)

.... the next morning

>>> utime.localtime()
(2016, 6, 20, 17, 56, 43, 0, 172)
>>> ntptime.settime()
(2016, 6, 21, 9, 53, 31, 1, 173)
>>> utime.localtime()
(2016, 6, 21, 9, 53, 35, 1, 173)

[deshipu]

The RTC overflows at around 7 hours, IIRC. You have to access it at least once every 7 hours for it to behave properly.

[jms]

Thanks. Can somebody tweak the documentation please ? In fact I'd happily do it myself along with a few other items. Presumably I can github fork and request a pull which is a procedure new to me.

[pythoncoder]

The RTC is supposed to be fixed in the current source: see issue #2107.