embedded-usb-host

An all-in-one host-side Rust USB stack implementation destined for embedded (no_std) use.

Includes host driver for SAMD chips (for now).

Includes class drivers for keyboard and MIDI devices.

Status

Work in progress, alpha-level code but compiles and runs.

Confirmed working with classic Dell SK-8115 keyboard, see examples/bootkbd

Also See https://github.com/fralalonde/usbmidi-host for sample MIDI application.

Not yet published on crates.io for obvious maturity reasons.

Missing

• Concurrent, non-blocking transfers (yep, still all single threaded now)
• STM32 support would be nice
• Get string descriptors from device (forked UTF16 is ready!)
• More class drivers (Hub, Mouse, etc.)
• Alternative Async API
• Harmonize with usb-device crate for full OTG madness

Known bugs

• Double fault on device reconnect (this is new)
• MIDI not coming in (Arturia Beatstep)
• HP keyboard (KU-1156) fails to get descriptor, why?

Reference

• USB Complete The Developer's Guide 4th Ed
• Atmel-42181-SAM-D21_Datasheet
• osdev wiki
• microsoft-usb-blog

Thanks

ATSAMD USB and bootkbd drivers based on https://github.com/bjc/bootkbd and https://github.com/bjc/atsamd-usb-host