Your config index is wrong. Zero should not be used at all according to the USB spec. Try "1".
Chuck On 06/27/2012 06:31 AM, Jach Fong wrote: > Hi! > > I continue my test on the libusbx-1.0.12-win under WinXP SP3 by > using a HID device. This time I follow steps in example xusb.c: > > 1. r = libusb_init(NULL); > 2. handle = libusb_open_device_with_vid_pid(NULL, vid, pid); > 3. dev = libusb_get_device(handle); > 4. libusb_get_device_descriptor(dev, &dev_desc); > > So far so good. > > 5. libusb_get_config_descriptor(dev, 0, &conf_desc) > > get a return value -5. > > It seems that I always encounter problems which looks silly:-( > > Best Regards, > Jach Fong > > ------------------------------------------------------------------------------ > 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 > [email protected] > https://lists.sourceforge.net/lists/listinfo/libusbx-devel > ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/libusbx-devel
