I tried libusbx git again and claim_interface is still returning -3. My device does have an HID interface.
I notice that with 1.0.12 libusb_get_device_address returns 5 and with the latest form git, libusb_get_device_address returns 6. If it helps, I am interfacing with a Microchip MCP2200 USB-to-UART serial converter. On Fri, Nov 16, 2012 at 1:30 AM, Xiaofan Chen <xiaof...@gmail.com> wrote: > On Fri, Nov 16, 2012 at 6:33 AM, Eric Lundby > <eric.lun...@modrobotics.com> wrote: > > Hello, > > > > I have a very basic program implementing two way communication with a > custom > > composite USB device using the WinUSB driver on Windows. I was having > some > > strange problems that I haven't been able to overcome (partially > documented > > at > > > http://stackoverflow.com/questions/13403681/libusb-windows-using-winusb-bulktransfer-receiving-inconsistant > > ). So I decided to try and update the libusb I was linking to. > > > > As soon as I loaded in 1.0.14, libusb_claim_interface returns -3. I > > swapped in 1.0.13 and latest from github all with the same result. I then > > threw 1.0.12 back in and everything is fine and dandy (with the > exception of > > the strange receiving bug i'm having). > > > > Is there a bug in my code that didn't surface until these newer versions > or > > is there perhaps a change to libusbx that I missed? > > > > Maybe you want to try out libusbx git to see if that helps. > https://github.com/libusbx/libusbx > > Does your device have an HID as one of the interface? The > following commit fixes an issue after 1.0.14 release. Take > note 1.0.13 and 1.0.14 release are basically the same. > > https://github.com/libusbx/libusbx/commit/fdff665a44169eda702a1267a3bbb4501d6bb3ee > > -- > Xiaofan > > > ------------------------------------------------------------------------------ > Monitor your physical, virtual and cloud infrastructure from a single > web console. Get in-depth insight into apps, servers, databases, vmware, > SAP, cloud infrastructure, etc. Download 30-day Free Trial. > Pricing starts from $795 for 25 servers or applications! > http://p.sf.net/sfu/zoho_dev2dev_nov > _______________________________________________ > libusbx-devel mailing list > libusbx-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/libusbx-devel > -- *[image: http://www.modrobotics.com/skin/frontend/cubelets/master/images/xmodrobotics_logo_tiny.png.pagespeed.ic.0U0wuMg0YU.png] * <http://www.modrobotics.com/>**** *Eric Lundby: *Software Developer** Modular Robotics <http://www.modrobotics.com/>**** eric.lun...@modrobotics.com
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