Rockbox mail archiveSubject: Re: Serial Mod was: Re: more boot research
Re: Serial Mod was: Re: more boot research
Date: Sat, 14 Jun 2003 05:55:59 +0200 (MEST)
> I was wondering what the serial mod is or how it works.
It is described here, for the player:
In short, you'd be re-wireing the 2 signal pins of the line in jack (hope
the FM has such) to become the RXD1/TXD1 of the CPU. See the datasheet for
which pins that is. Linus' standart is to wire TX to the tip. I didn't find the
mod description very helpful (because my box was different), instead I
followed the signal traces from the CPU to find two nice vias at positions I liked.
To connect it to a PC, you'd then need a level converter, for example this
one (I'm using a different one):
The main reward of all this is that you can use gdb for in-circuit
debugging. The second will be that you can flash the unit from scratch when I'm done
with my part.
> I might think of doing it to my fm-recorder if it won't utterly destroy
Depends on your soldering skills ;-)
> After all, it's summer and I've got nothing better to do. :)
Are you on the southern hemisphere, with in fact dark long winter days?
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