Rockbox mail archiveSubject: Re: Power off testing - current and spinup time
Re: Power off testing - current and spinup time
From: Björn Stenberg <bjorn_at_haxx.se>
Date: Thu, 5 Dec 2002 08:14:49 +0100
Nuutti Kotivuori wrote:
> Playing, backlight off, HD off: 0.07
> Playing, backlight off, HD sleep: 0.08
> So, there is a difference between HD sleep and HD off. And that was
> basically what I wanted to know.
I'd like to point out that while this difference is small in numbers, going from 80mA to 70mA is a 12.5% power saving.
> Spin-up time given by firmware : constant 20ms
> There's gotta be a bug of some sort there,
You're right. I only tested the clocking with poweroff enabled, it bugs with it disabled. I'll fix that.
Thanks for the write-up. As you say, it doesn't give any hard conclusions, but plenty of valuable data for development.
-- BjörnReceived on 2002-12-05