Commit 3f6ca4b2 authored by puuu's avatar puuu Committed by Damien George
Browse files

docs/esp8266/general: Add note about RTC overflow.

parent cafdfb7a
......@@ -91,3 +91,12 @@ the following in ``main.py``::
This will allow to keep the structure of your application clear, as well as
allow to install multiple applications on a board, and switch among them.
Real-time clock
---------------
Due to limitations of the ESP8266 chip the internal real-time clock (RTC)
will overflow every 7:45h. If a long-term working RTC time is required then
``time()`` or ``localtime()`` must be called at least once within 7 hours.
MicroPython will then handle the overflow.
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