Lyle Haze pisze:
http://www.amigans.net/modules/xforum/viewtopic.php?post_id=77484#forumpost77484--- Copy & Paste ---------------------------------------
If it said "Recording.." then it IS a class compatible device.
The problem is probably due to the "limited" support we have right now for Audio transfers on the USB bus.
Please allow me to explain:
The current USB stack has three different internal "handlers", which are selected depending on whether the device is USB1 or USB2, and also depending on what kind of USB chipset you have, and possibly what kind of Hub you are using. (it's a bit of a riddle to me)
So, the three current options are "OHCI", "EHCI", and "UHCI". I'm pretty sure I got them in the wrong order. At this time, only one of the three supports Isochronous transfers, which are required for Audio work. (you might recall from our previous discussion)
So, depending on what you plug in, and what you plug it into, we may or may not be able to transfer audio data. This sounds like the most likely cause for your zero file length problem.
So far, we know that the built-in ports on an X1000 WILL work. we know that the built-in ports on a SAM-Flex WILL work, and we know that the builtin ports on an XE WILL NOT work. But it also might have something to do with whether your device is 1.0, 1.1 or 2.0.. We don't yet have all the details.
A PCI card with a NEC chipset should also work.
I must be clear.. the "limited" support for ISO transfers was pretty much untested until a few weeks ago. Now that this tool is available for testing, we MIGHT get more support for ISO transfers in the future,
But right now our USB team is busy working on USB3 (XHCI), and that is WAY more important!
So, your device IS class compatible, and given what I described here it may be supported in the future, but not at this time.
Thanks for testing!
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