On Mon, Oct 18, 2021 at 2:03 PM fishx2000--- via pyusb-users <pyusb-users@lists.sourceforge.net> wrote: > > Hi, > > I can send input/output report request via HID interface, using the following > command: > dev.ctrl_transfer(0xA1, 0x01, 0x0100|reportId, hidItfaceIdx, reportLen) > dev.ctrl_transfer(0x21, 0x09, 0x0200|report[0], hidItfaceIdx, report) > > but failed to send feature report request: > dev.ctrl_transfer(0xA1, 0x01, 0x0300|reportId, hidItfaceIdx, reportLen) > dev.ctrl_transfer(0x21, 0x09, 0x0300|report[0], hidItfaceIdx, report) > > > I tried the above command in MS-Window, using libusb as backend. > Is there any restrictions on this usage?
If it is for HID device, you may want to use HIDAPI and cython-hidapi. There are quite some limitations for the libusb/pyusb with HID devices. But if you really want to try out pyusb with native HID device driver, you can try the latest libusb-1.0 git. It has one critical fix for the feature report. https://github.com/libusb/libusb/pull/986 -- Xiaofan _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
