Introduction

The gousb package is an attempt at wrapping the libusb library into a Go-like binding.

Supported platforms include:

linux
darwin
windows

This is the release 2.0 of the package github.com/kylelemons/gousb. Its API is not backwards-compatible with version 1.0. As of 2017-07-13 the 2.0 API is considered stable and 1.0 is deprecated.

Documentation

The documentation can be viewed via local godoc or via the excellent godoc.org:

usb
usbid

Installation

Dependencies

You must first install libusb-1.0. This is pretty straightforward on linux and darwin. The cgo package should be able to find it if you install it in the default manner or use your distribution's package manager. How to tell cgo how to find one installed in a non-default place is beyond the scope of this README.

Note: If you are installing this on darwin, you will probably need to run fixlibusb_darwin.sh /usr/local/lib/libusb-1.0/libusb.h because of an LLVM incompatibility. It shouldn't break C programs, though I haven't tried it in anger.

Example: lsusb

The gousb project provides a simple but useful example: lsusb. This binary will list the USB devices connected to your system and various interesting tidbits about them, their configurations, endpoints, etc. To install it, run the following command:

go get -v github.com/google/gousb/lsusb

gousb

If you installed the lsusb example, both libraries below are already installed.

Installing the primary gousb package is really easy:

go get -v github.com/google/gousb

There is also a usbid package that will not be installed by default by this command, but which provides useful information including the human-readable vendor and product codes for detected hardware. It's not installed by default and not linked into the gousb package by default because it adds ~400kb to the resulting binary. If you want both, they can be installed thus:

go get -v github.com/google/gousb{,/usbid}

Notes for installation on Windows

You'll need:

Gcc - tested on Win-Builds and MSYS/MINGW
pkg-config - see http://www.mingw.org/wiki/FAQ, "How do I get pkg-config installed?"
libusb-1.0.

Make sure the libusb-1.0.pc pkg-config file from libusb was installed and that the result of the pkg-config --cflags libusb-1.0 command shows the correct include path for installed libusb.

After that you can continue with instructions for lsusb/gousb above.

Contributing

Contributing to this project will require signing the Google CLA. This is the same agreement that is required for contributing to Go itself, so if you have already filled it out for that, you needn't fill it out again.

License

go-programmer/gousb

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