[pyusb-users] Not implemented error on is_kernel_driver_active

[Matthias G. <em...@ma...>]

Hello guys,

I'm new to this mailing list, pyusb and Linux in general. So sorry, if some of my questions may be a little stupid. I know my way around python, though.

Anyways, I got a raspberry pi with raspbian installed and I'm writing a python script to read data from an air quality sensor that identifies itself as a HID to the OS. When I try to read or write data to/from the device I get a USBError:
Could not claim interface 0: device or resource busy.

I think that happens because the os attaches a kernel driver to the device. Correct?

In that case I found some code that tries to claim the interface:
if dev.is_kernel_driver_active (0):
    dev.detach_kernel_driver(0)

usb.util.claim_interface (dev, 0)

But there I get a NotImplementedError. Why? Whats wrong and what can I do?

Matt