OK, it's good to know about the WinUSB set-config limitation. Presumably the same is true for the set-alt-interface call?
If you're interested, the project I'm porting (from libusb-0.1) is FPGALink: http://www.makestuff.eu/wordpress/software/fpgalink/ The performance difference is staggering. The libusb-0.1-based version did about 26MiB/s, whereas the libusbx-based version pretty much maxes out the bus, achieving about 43MiB/s, at least on Linux. Windows performance is less impressive (something like 33MiB/s IIRC). I'm hoping the forthcoming support for the libusbK back-end will improve that. Interestingly I have been using my own fxload replacement for several years, which I have now ported to libusbx (but not yet pushed to github): http://www.makestuff.eu/wordpress/software/fx2tools/ I tried setting the debug level higher but it had no effect; I suspect the Windows and Ubuntu binaries hard-code it disabled. I'll try building from source tomorrow. In any event, I think I might have found my problem, and it's (surprise surprise) in the firmware. The FX2 is...eccentric. I got everything working nicely on Linux, Windows and MacOSX with both libusb-0.1 and libusbx, but then made some supposedly innocuous firmware mods without sufficient libusbx regression-testing; it worked with libusb-0.1 on Linux so I went ahead and checked in the changes, but now I see that my libusbx regression test fails, even on Linux. So I suspect I did something silly to the firmware. I will trawl back through the commit-log and try to get back to a known-good state. Chris On Mon, 2012-09-03 at 22:23 +0100, Pete Batard wrote: <snip> ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
