- From: Bernd Porr <BerndPorr_at_f2s.com>
- Date: Tue, 24 May 2005 10:59:57 +0100
Interesting. I never had any problems with that. In particular with
usb_bulk_msg. But it seems so that it depends on the actual firmware
which is in the usb device. It has to be quite "responsive". In the
usbdux devices the endpoint zero responses come from a hardwired core
which responds virtually immediately. That's also the reason why I like
the FX2 by cypress. You don't have to worry about EP0 calls. It's done
by its core.
/Bernd
www: http://www.berndporr.me.uk/
http://www.linux-usb-daq.co.uk/
Mobile: +44 (0)7840 340069
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University of Glasgow
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Frank Mori Hess wrote:
> On Monday 23 May 2005 07:10 am, you wrote:
>
>>/Bernd
>>P.S.: Frank, can you be more specific what you mean with 'buggy'?
>>
>
>
> Just a lot of timeout errors. Sometimes it would die completely and
> everything would time out, in which case I'd have to unload and reload the
> usb modules to get it going again. The problems seemed to go away when I
> stopped using usb_bulk_msg(), although I did make some other changes
> simultaneously.
>
Received on 2005-05-24Z08:59:57