This is a firmware for stm32f0-based USB-CAN adapters, notably:

• candleLight: https://github.com/HubertD/candleLight
• cantact: http:https://linklayer.github.io/cantact/
• canable (cantact clone): http:https://canable.io/
• USB2CAN: https://github.com/roboterclubaachen/usb2can

It implements the interface of the mainline linux gs_usb kernel module and works out-of-the-box with linux distros packaging this module, e.g. Ubuntu.

Be aware that there is a bug in the gs_usb module in linux<4.5 that can crash the kernel on device removal.

Here is a fixed version that should also work for older kernels: https://github.com/HubertD/socketcan_gs_usb

The Firmware also implements WCID USB descriptors and thus can be used on recent Windows versions without installing a driver.