Official Go implementation of the Ethereum protocol
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go-ethereum/vendor/github.com/karalabe/usb/usb.go

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// usb - Self contained USB and HID library for Go
// Copyright 2019 The library Authors
//
// This library is free software: you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option) any
// later version.
//
// The library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License along
// with the library. If not, see <http://www.gnu.org/licenses/>.
// Package usb provide interfaces for generic USB devices.
package usb
import "errors"
// ErrDeviceClosed is returned for operations where the device closed before or
// during the execution.
var ErrDeviceClosed = errors.New("usb: device closed")
// ErrUnsupportedPlatform is returned for all operations where the underlying
// operating system is not supported by the library.
var ErrUnsupportedPlatform = errors.New("usb: unsupported platform")
// DeviceInfo contains all the information we know about a USB device. In case of
// HID devices, that might be a lot more extensive (empty fields for raw USB).
type DeviceInfo struct {
Path string // Platform-specific device path
VendorID uint16 // Device Vendor ID
ProductID uint16 // Device Product ID
Release uint16 // Device Release Number in binary-coded decimal, also known as Device Version Number
Serial string // Serial Number
Manufacturer string // Manufacturer String
Product string // Product string
UsagePage uint16 // Usage Page for this Device/Interface (Windows/Mac only)
Usage uint16 // Usage for this Device/Interface (Windows/Mac only)
// The USB interface which this logical device
// represents. Valid on both Linux implementations
// in all cases, and valid on the Windows implementation
// only if the device contains more than one interface.
Interface int
// Raw low level libusb endpoint data for simplified communication
rawDevice interface{}
rawPort *uint8 // Pointer to differentiate between unset and port 0
rawReader *uint8 // Pointer to differentiate between unset and endpoint 0
rawWriter *uint8 // Pointer to differentiate between unset and endpoint 0
}
// Device is a generic USB device interface. It may either be backed by a USB HID
// device or a low level raw (libusb) device.
type Device interface {
// Close releases the USB device handle.
Close() error
// Write sends a binary blob to a USB device. For HID devices write uses reports,
// for low level USB write uses interrupt transfers.
Write(b []byte) (int, error)
// Read retrieves a binary blob from a USB device. For HID devices read uses
// reports, for low level USB read uses interrupt transfers.
Read(b []byte) (int, error)
}