Linux USB HID Interfacing in Userspace
summary
Builds a userspace driver in Rust using mio that reads the hidraw device and a UDP OSC socket and emits MIDI and OSC; reconstructs LED and screen commands by fuzzing and by sniffing USB via usbmon and Wireshark from a Windows VM; decodes button bitmaps with an XOR plus trailing-zero loop, filters pressure pads to implement threshold and aftertouch, keeps only one unsafe block, and hits a 15–25 ms added latency when upgrading mio that forces further investigation.
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chapters (8)
- 0:00Introduction
- 4:05Reverse Engineer
- 7:22Wireshark
- 8:56Driver
- 12:38Program
- 14:48Unsafe Code
- 15:33Latency
- 18:47Questions
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