例子：冰狐脚本调用UsbClient和USB HID硬件通信
function main() {
    var usb = new UsbClient();
    var b = usb.connect();
    console.log('connect:', b);
    if (b) {
        usbHome(usb);
    }
    console.log('end')
}

function usbClick(usb, x, y, duration) {
    if (null == duration) {
        duration = 200
    }
    usbMouseMove(usb, x, y);
    sleep(duration);
    usbMouseUp(usb);
}

function usbHome(usb) {
    usbKeyDown(usb, 135, 40);
    sleep(100)
    usbKeyUp(usb);
}