Introduction

The go-accessoryhid package is an implementation of the AOA 2.0 protocol for Android HID devices.

Dependence on gousb and libusb-1.0.

Documentation

TODO.

Installation

• gousb

go get -u github.com/Tryanks/go-accessoryhid

Usage

Example:

package main

import (
	accessory "github.com/Tryanks/go-accessoryhid"
	"time"
)

func main() {
	devices, err := accessory.GetDevices(2)
	if err != nil {
		panic(err)
	}
	phone := devices[0]
	defer phone.Close()
	keyboard, err := phone.Register(accessory.KeyboardReportDesc) // Register keyboard report descriptor
	time.Sleep(200 * time.Millisecond)
	err = keyboard.SendEvent([]byte{
		0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
	}) // Hid event (pressing 'a')
	if err != nil {
		panic(err)
	}
	err = keyboard.SendEvent([]byte{
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	}) // Hid event (releasing 'a')
	if err != nil {
		panic(err)
	}
}

FAQ

Q: Getting libusb: pipe error [code -9] when sending HID events after calling Register().

A: This error typically occurs due to sending events too quickly after HID descriptor registration.

The Android device may not have completed its initialization process.

The solution is to add a short delay after calling Register(),