Re: [pyusb-users] help on win7: Entity not found

2021-04-27 Thread Jonas Malaco via pyusb-users
On Tue, Apr 27, 2021 at 08:18:09AM +, CM-Wu Ben - 吳文鐘 wrote: > Hi, > I got a problem when dealing with control transfer on win7. > > After set backend(libusb1), find usb device, I can send standard/class USB > request via dev.ctrl_transfer() successfully, but failed when sending vendor > re

[pyusb-users] help on win7: Entity not found

2021-04-27 Thread CM-Wu Ben - 吳文鐘
Hi, I got a problem when dealing with control transfer on win7. After set backend(libusb1), find usb device, I can send standard/class USB request via dev.ctrl_transfer() successfully, but failed when sending vendor request. the reason is 'Entity not found' Is there any restrictions when sendin