Rockbox mail archiveSubject: Re: Testers wanted: up to 50% greater battery life
From: TP Diffenbach (rockbox_at_diffenbach.org)
> > The magic is pretty simple: the wps thread does more mork than we want.
For 13 hours and then 9 hours, and then 5 hours and then 6 hours I periodically when to Debug View Battery and read the voltage and typed it into my pda. My pda's spreadsheet sodftware (Hancom Sheet) is a bit buggy: entering or calculating invalid values (such as a time >= 1 (time is a fraction)) caused it to abend, so I initialy lost a bunch of data points.
> > The first cut battery extension just suspends scolling (without destroying
I suspect that if we're going to update, we should just update.
> > A good compromise might be to save only that information that really can
Yeah, I know.
That's a problem. There's a hardware off, so in some cases we'd be racing against that deadline.
> > Each possibility has tradeoffs in terms of work done versus loss of
If being off by a minute really perturbs you, you could turn this power-saving off. But I think saving to the RTC (unless that's really expensive) should suffice ofr Recorders and FMs. Or just go through software shutdown. You'll have to pay somewhere, and I expect lonbger batery life will win over quick shutdown for most people.
> > A related problem is that the wps thread is responsible for polling the
The wps doesn't need to care at all. Let the mpeg thread update the structure, employing a mutex, and let the wps thread just display whatever's writtem
> > Thought and comments on the above are of course invited.
And thank you!
-- Archos FM has a Rockbox!
Page was last modified "Jan 10 2012" The Rockbox Crew