I've been trying to get a yoctopuce (https://www.yoctopuce.com/) USB sensor to work on OpenBSD, but have run into problems.
The sensor has Linux code (https://github.com/yoctopuce/yoctolib_cpp.git) that uses libusb, but on OpenBSD using the libusb1 package, libusb_kernel_driver_active() and libusb_detach_kernel_driver() are returning error code -12 (LIBUSB_ERROR_NOT_SUPPORTED). I found some rather old advice saying that these errors can be ignored (https://github.com/apple/cups/issues/4088), but then i get an error -12 from libusb_submit_transfer(). I notice that 'pkg_info -R libusb1' shows just 9 ports depend on libusb1, so i'm wondering whether the libusb1 port is expected to work generally on OpenBSD, or whether it be better to try to use the usb(4) ioctl API? Thanks for any advice, - Jules -- http://op59.net
