From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 02 Oct 2007 10:05:54 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Xenomai-help] rt usb
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To: rolandtollenaar@domain.hid
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Roland Tollenaar wrote:
> Hi,
> 
> I was just wondering whether any work was going on for real-time usb?
> 
> This would enable the use of PCI adaptors over USB so that PCI-IO cards 
> (like the peak-can card) can be used from laptops. CAN over USB is also 
> rather valuable.

http://developer.berlios.de/projects/usb4rt
https://gna.org/projects/usb20rt

Both projects are generally not directly usable and are currently in a 
dormant state.

> 
> Is any documentation available which clarifies why usb is a problem and 
> how big the problem is (perhaps I can risk it?:) )

No longer at hand (a former student of mine did his diploma thesis about 
usb4rt). Generally, there is no real show-stopper, we "just" need a 
real-time-aware stack that provides appropriate API (e.g. to 
preallocated required resources) and that is bug-free... :)

Jan

-- 
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux