Android暂停USB设备吗？
我正在设计一种USB设备，该设备旨在连接到现成的Android手机。该设备应长时间连接（小时），因此应尽可能少。在此期间，它监视传感器输入，并在某些条件下向主机发送信号。
在USB规范中，有“暂停”和“远程唤醒”的概念。在睡眠模式下，USB键盘和鼠标通常使用它来唤醒PC，并在按下按钮之前少于1mA。
我可以通过USB模式验证这种行为。在正常运行的PC上，鼠标在睡眠模式下绘制10至30mA，下降到0.5mA。
我在Android手机中寻找此类功能，但找不到任何东西。如果我将鼠标插入三星Galaxy A12的USB端口，那么无论屏幕是否关闭，或者手机处于打ze式模式，它的消耗始终保持在10mA左右。考虑到移动设备可节省尽可能多的能源的重要性，我发现这相当令人惊讶。
因此，我想知道此功能是否真的存在于任何已知的Android OS或设备中，即，非根系的Android设备是否可以悬挂连接到其主机端口的USB设备。也许可以启用一些设置？
I'm designing a USB device meant to be connected to an off-the-shelf Android phone. The device is meant to be connected for a long time (hours) and should therefore draw as little power as possible. During this time it monitors a sensor input and, under certain conditions, sends a signal to the host.
In the USB specification there's the notion of "suspend" and "remote wake-up". This is normally used by USB keyboards and mice to wake-up a PC when in sleep mode, and draw less than 1mA before a button is pressed.
I could verify this behavior with a USB mode. On a normally running PC the mouse draws 10 to 30mA, when in sleep mode it goes down to 0.5mA.
I looked for such feature in Android phones, but I couldn't find anything. If I plug a mouse to the USB port of a Samsung Galaxy A12 its consumption always remains at around 10mA, no matter if the screen is off or if the phone is in doze mode. I find this rather surprising, considering how important is for a mobile device to save as much energy as possible.
So I wonder if this feature is actually present in any known Android OS or device, i.e. if a non-rooted Android device can suspend USB devices connected to its host port. Maybe there's some setting that can be enabled?
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