[En-Nut-Discussion] No 32 Khz clock

Ole Reinhardt ole.reinhardt at kernelconcepts.de
Mon Oct 3 15:48:55 CEST 2005


Hi,

> I have some custom hardware which does not have the 32Khz clock connected to
> PG3 & PG4  (TOSC1 & TOSC2), are there any implications with respect to
> setting up the configurator or using the ethernut OS that I need to be aware
> of?  In other words, I don't know if Ethernut is counting on there being a
> 32Khz signal at TOSC1 & 2.

No, you don't need the 32Khz crystal, but in this case you should set 
NUT_CPU_FREQ=xxxxxxxx to you clock frequency. Also this might have
effects in case of power management issues. You'll find more about it in
the ATMega128 datasheet.

Best regards,

Ole Reinhardt

-- 
kernel concepts    Tel: +49-271-771091-14
Dreisbachstr. 24   Fax: +49-271-771091-19
D-57250 Netphen    E+ : +49-177-7420433
--





More information about the En-Nut-Discussion mailing list