scrcpy/doc/gamepad.md

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# Gamepad
Several gamepad input modes are available:
- `--gamepad=disabled` (default)
- `--gamepad=uhid` (or `-G`): simulates physical HID gamepads using the UHID
kernel module on the device
- `--gamepad=aoa`: simulates physical HID gamepads using the AOAv2 protocol
## Physical gamepad simulation
Two modes allow to simulate physical HID gamepads on the device, one for each
physical gamepad plugged into the computer.
### UHID
This mode simulates physical HID gamepads using the [UHID] kernel module on the
device.
[UHID]: https://kernel.org/doc/Documentation/hid/uhid.txt
To enable UHID gamepads, use:
```bash
scrcpy --gamepad=uhid
scrcpy -G # short version
```
Note: UHID may not work on old Android versions due to permission errors.
### AOA
This mode simulates physical HID gamepads using the [AOAv2] protocol.
[AOAv2]: https://source.android.com/devices/accessories/aoa2#hid-support
To enable AOA gamepads, use:
```bash
scrcpy --gamepad=aoa
```
Contrary to the other mode, it works at the USB level directly (so it only works
over USB).
It does not use the scrcpy server, and does not require `adb` (USB debugging).
Therefore, it is possible to control the device (but not mirror) even with USB
debugging disabled (see [OTG](otg.md)).
Note: For some reason, in this mode, Android detects multiple physical gamepads
as a single misbehaving one. Use UHID if you need multiple gamepads.
Note: On Windows, it may only work in [OTG mode](otg.md), not while mirroring
(it is not possible to open a USB device if it is already open by another
process like the _adb daemon_).