[En-Nut-Discussion] 32.768kHz crystal

Harald Kipp harald.kipp at egnite.de
Mon Jan 6 12:27:34 CET 2003

>I am just wondering - do you actually use the 32.768kHz crystal for anything
>in the O/S? Or is it just there for something one of your applications uses?

The system timer uses it and will maintain a RTC in the future.
It is also used to provide automatic crystal frequency detection
for baudrate calculations.

When defining NUT_CPU_FREQ in Makedefs and recompiling Nut/OS, then the 32kHz
crystal is not required anymore. At least that's how it's designed. :-)


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