usb-gadget

Crates.iousb-gadget
lib.rsusb-gadget
version
sourcesrc
created_at2023-09-29 20:34:56.562895
updated_at2024-12-06 10:08:25.422291
descriptionExpose standard or fully custom USB peripherals (gadgets) through a USB device controller (UDC) on Linux.
homepage
repositoryhttps://github.com/surban/usb-gadget
max_upload_size
id987851
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size0
Sebastian Urban (surban)

documentation

README

usb-gadget

crates.io page docs.rs page Apache 2.0 license

This library allows implementation of USB peripherals, so called USB gadgets, on Linux devices that have a USB device controller (UDC). Both, pre-defined USB functions and fully custom implementations of the USB interface are supported.

The following pre-defined USB functions, implemented by kernel drivers, are available:

  • network interface
    • CDC ECM
    • CDC ECM (subset)
    • CDC EEM
    • CDC NCM
    • RNDIS
  • serial port
    • CDC ACM
    • generic
  • human interface device (HID)
  • mass-storage device (MSD)
  • printer device
  • musical instrument digital interface (MIDI)
  • audio device (UAC2)
  • video device (UVC)

In addition fully custom USB functions can be implemented in user-mode Rust code.

Support for OS-specific descriptors and WebUSB is also provided.

Features

This crate provides the following optional features:

  • tokio: enables async support for custom USB functions on top of the Tokio runtime.

Requirements

The minimum support Rust version (MSRV) is 1.73.

A USB device controller (UDC) supported by Linux is required. Normally, standard PCs do not include an UDC. A Raspberry Pi 4 contains an UDC, which is connected to its USB-C port.

The following Linux kernel configuration options should be enabled for full functionality:

  • CONFIG_USB_GADGET
  • CONFIG_USB_CONFIGFS
  • CONFIG_USB_CONFIGFS_SERIAL
  • CONFIG_USB_CONFIGFS_ACM
  • CONFIG_USB_CONFIGFS_NCM
  • CONFIG_USB_CONFIGFS_ECM
  • CONFIG_USB_CONFIGFS_ECM_SUBSET
  • CONFIG_USB_CONFIGFS_RNDIS
  • CONFIG_USB_CONFIGFS_EEM
  • CONFIG_USB_CONFIGFS_MASS_STORAGE
  • CONFIG_USB_CONFIGFS_F_FS
  • CONFIG_USB_CONFIGFS_F_HID
  • CONFIG_USB_CONFIGFS_F_PRINTER
  • CONFIG_USB_CONFIGFS_F_MIDI
  • CONFIG_USB_CONFIGFS_F_UAC2
  • CONFIG_USB_CONFIGFS_F_UVC

root permissions are required to configure USB gadgets on Linux and the configfs filesystem needs to be mounted.

License

usb-gadget is licensed under the Apache 2.0 license.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in usb-gadget by you, shall be licensed as Apache 2.0, without any additional terms or conditions.

Commit count: 67

cargo fmt