This thread may be of some interests to the list member here. http://libusb.6.n5.nabble.com/USB-device-works-in-linux-but-not-in-OSX-td5711092.html
Just wondering if it makes sense to add a new API (libusb_reset_ex()) or extend the existing API to support the re-enumeration (at least for Mac OS X and libusb0.sys). Summary: Mac OS X: Current behavior: using ResetDevice() and it will not cause re-enumeration Possible addition: to use DeviceReEnumerate() and it will cause re-enumeration Windows: 1. WinUSB: reset not supported 2. libusb0.sys a) LIBUSB_IOCTL_RESET_DEVICE_EX: supports reset the upstream hub port and this will not cause re-enumeration. b) LIBUSB_IOCTL_RESET_DEVICE support forced re-enumeration Side effect as per Tim: causing cycle power on the hub port (which causes a re-enumeration), but that can cause some devices (eg: EZ-USB FX/FX2) to lose their loaded firmware, which defeats the purpose in the original discussion (firmware update). 3. libusbk.sys supporting reset the hub port only and it will not cause re-enumeration. Linux (usbfs) Not supporting forced re-enumeration. But if the kernel sees that the device, config, or serial-number string descriptors have changed after libusb_reset(), it will automatically re-enumerate the device. -- Xiaofan ------------------------------------------------------------------------------ Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery and much more. Keep your Java skills current with LearnJavaNow - 200+ hours of step-by-step video tutorials by Java experts. SALE $49.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122612 _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
