# Re: \[PATCH\] Heartbeat LED for iBook

- From: Segher Boessenkool \<hidden\>
- Date: 2005-02-18 13:00:00 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2005/02/9396707
- Thread: https://ratatoskr.run/linuxppc-dev/2005/01/9396261/t.md

```text
> Well, it's the last part of RTFM, so I was asking
> for the "fine manual", the documentation to ADB/PMU. So I can
> lookup the commands I need for setting the led on/off.

There is no manual.  You can look at some Darwin source code,
I guess, or there is some code in Linux to do this as well, IIRC.


Segher
```