Userspace Xbox controller driver.
I have purchased 2 Xbox One S clone controllers, that didn't work with the default linux kernel driver, nor did they work with dkms xpad driver, and xboxdrv did not seem to support the vendor_id/product_id combo, and I was looking for an excuse to do a project in rust.
Note that I had no previous knowledge of how libusb or uinput work, the whole thing was developed in a span of a few days, after work.
In order to access USB devices this program uses libusb. After discovering all devices, it filters the eligible ones, finding their configs, interfaces and endpoints for reading and writing. After obtaining the relevant data it starts a scoped thread for each controller found (thanks to The Rust Programming Language Discord). The thread then attempts to claim the device, then writes the init packet to it. After successful init the thread loops indefinitely (or until an error occurs), reading from the device on each loop. The read packet is parsed and sent over to uinput device.
In order to make it run fully without sudo access I used the following udev, in /etc/udev/rules.d/51-xpad.rules:
SUBSYSTEM=="usb", ATTRS{idVendor}=="045e", ATTRS{idProduct}=="02ea", TAG+="uaccess"
Not all software seems to detect it as an Xbox controller. As I have also managed to since "repair" the dkms-xpad driver I was able to compare jstest-gtk, and it seems not everything is mapped in the same way. Additionally, if some error occurs while running thread for the controller no information is printed. This needs to be addressed. Additionally, only controllers present at program startup are detected, so if the controller is attached after running it, it will not be detected. Additionally, it appears that two controllers on the same bus are not supported, albeit I seem to have the same issue with dkms-xpad.
At this time only one controller is supported (as I only have the one):
- 045e:02ea
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