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Subject: PortalPlayer USB for 3.2?

PortalPlayer USB for 3.2?

From: Frank Gevaerts <>
Date: Sun, 15 Mar 2009 00:08:05 +0100


As you probably know, the rockbox USB stack has been enabled for
PortalPlayer devices for a while now. It works fine for most people,
but some people are having problems.

Those problems usually cause unexpected disconnects after a while,
during file transfers (i.e. the OS stops talking to the DAP). This
is basically equivalent to unplugging the device while a transfer is
in progress, so the risk of filesystem corruption is pretty high. I've
only heard of this happening on sansa so far, but I don't know if this
means that other targets are immune.

Other semi-related issues include people complaining about bad charging
on ipods, possibly related to inefficient disk use during USB transfers,
and the lack of itunes compatibility (this can be "solved" with
appropriate documentation of course)

In my opinion, especially the first issue means that we should not
enable the USB stack for 3.2, and instead keep the old way of rebooting
on connect.



"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
Received on 2009-03-15

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