Emulating usb devices with python using the USB/IP protocol.
This work is heavily based on this repository. However, there a many differences, mainly because this new version supports any number of devices. It is still missing a proper detach protocol.
The whole USBIP code is in the USBIP.py file. The best way to understand how to implement a device is to look at how the wiimote example is implemented or to see the example of lcgamboa's repository.
Using USBIP on Windows can be a huge pain. I have done a lot of research before finally getting it to work correctly. Therefore, here are the things you should know :
- If you've already installed the USBIP driver, uninstall it, it causes BSODs
- If you've already downloaded the USBIP binary, remove it
- Use this driver & binary instead (the driver is located in the
outputfolder) - This is not directly related to this post, but if you're having issues attaching a device from Windows to a linux host, this is because usbip has been merged into the kernel since 3.14. However, no need to downgrade, there is a fix !
This repository contains a fully functional USBIP wiimote example. It uses cwiid to communicate with the wiimotes.
Everything is implemented, including using multiple wiimotes and using a nunchuk.
All wiimotes are represented as a Generic USB Joystick with USBIP, they are therefore accessible without any specific driver.
In order to use it, launch python wiimotes.py and follow the instructions.
Pressing the HOME button on a wiimote will put it into a "menu" mode. There are four entries that can be selected using the MINUS and PLUS buttons. Activating the selected entry is made by pressing the A button :
- If nunchuk is plugged, send its values instead of the values of the accelerometer
- Easy "Mario Kart" switch. Remaps some buttons to use the wiimote as a steering wheel
- Trigger a new wiimote scan to add new wiimotes (useful in a "headless" system)
- Disconnect this wiimote