[En-Nut-Discussion] power optimizations in idle thread

[Henrik Maier]

I don't think SLEEP_MODE_ADC would make sense in the idle thread. It would
be used in the ADC driver were you make a conversion and want to reduce
noise by going sleeping.

Based on this assumption I think it is reasonable safe to turn off the ADC
when going sleeping in idle.

If you want to give people ultimate flexibility I suggest to have all of
your enhancements configurable (enable/disable) with the Nut/OS
configurator. That way you have the enhancements available for the BTNut but
the logic and code size (even if it's only a few bytes) for existing users
stays the same.

With Nut/OS growing at constant pace the size of the standard libraries is
also growing. We should try to keep Nut/OS still usable with a reasonable
kernel code size and only compile-in the features needed.

Henrik
http://www.proconx.com

> -----Original Message-----
> From: Mustafa Yuecel [mailto:yuecel at tik.ee.ethz.ch]
> Sent: Thursday, 12 April 2007 6:50 PM
> To: Ethernut User Chat (English)
> Subject: Re: [En-Nut-Discussion] power optimizations in idle thread
> 
> Hi Henrik
> 
> Ok, I see no problem with the buskeeper bit, but what if someone want
> to
> use the ADC wakeup and thus the ADC should not disabled during sleep?
> Do
> we ignore this case, use SLEEP_MODE_ADC in this case or put some
> #ifdefs?
> 
> Musti
>