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Subject: Re: Use SLEEP instruction for longer (?) runtime

Re: Use SLEEP instruction for longer (?) runtime

From: Andrew Jamieson <>
Date: Wed, 22 Jan 2003 15:16:25 +1100

Initial tests seem to indicate that it saves ~10mA off the average current
when sleep is set on (130mA avg -> 120mA when sleep on). Some of this
decrease will be due to red LED not being on all the time tho, but that is
probably only around 1mA, which may very well fall off the edge of my
testing resolution at the moment. More precise testing will have to wait
until I get home ...

Andrew Jamieson

----- Original Message -----
From: "Simon ElÚn" <>
To: <>
Sent: Wednesday, January 22, 2003 1:02 PM
Subject: Re: Use SLEEP instruction for longer (?) runtime

> Andrew, Joaquim: I've placed compiled versions for player and recorder at
> I've only tested the code on a recorder. This build is compiled with
> USE_LED_FOR_CPU_BUSY, so you should be able to see different parts of
> rockbox consuming different amounts of CPU time. There's a new choice at
> bottom of the main menu to turn CPU sleep on/off, it always starts
> after booting.
> --
> Simon ElÚn
Received on 2003-01-22

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