mirror of https://github.com/Genymobile/scrcpy
68 lines
2.0 KiB
Markdown
68 lines
2.0 KiB
Markdown
# OTG
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By default, _scrcpy_ injects input events at the Android API level. As an
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alternative, it is possible to send HID events, so that scrcpy behaves as if it
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was a [physical keyboard] and/or a [physical mouse] connected to the Android
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device (see [keyboard](keyboard.md) and [mouse](mouse.md)).
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[physical keyboard]: keyboard.md#physical-keyboard-simulation
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[physical mouse]: mouse.md#physical-mouse-simulation
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A special mode (OTG) allows to control the device using AOA
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[keyboard](keyboard.md#aoa), [mouse](mouse.md#aoa) and
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[gamepad](gamepad.md#aoa), without using _adb_ at all (so USB debugging is not
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necessary). In this mode, video and audio are disabled, and `--keyboard=aoa` and
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`--mouse=aoa` are implicitly set. However, gamepads are disabled by default, so
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`--gamepad=aoa` (or `-G` in OTG mode) must be explicitly set.
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Therefore, it is possible to run _scrcpy_ with only physical keyboard, mouse and
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gamepad simulation, as if the computer keyboard, mouse and gamepads were plugged
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directly to the device via an OTG cable.
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To enable OTG mode:
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```bash
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scrcpy --otg
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# Pass the serial if several USB devices are available
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scrcpy --otg -s 0123456789abcdef
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```
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It is possible to disable keyboard or mouse:
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```bash
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scrcpy --otg --keyboard=disabled
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scrcpy --otg --mouse=disabled
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```
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and to enable gamepads:
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```bash
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scrcpy --otg --gamepad=aoa
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scrcpy --otg -G # short version
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```
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It only works if the device is connected over USB.
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## OTG issues on Windows
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See [FAQ](/FAQ.md#otg-issues-on-windows).
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## Control only
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Note that the purpose of OTG is to control the device without USB debugging
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(adb).
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If you want to solely control the device without mirroring while USB debugging
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is enabled, then OTG mode is not necessary.
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Instead, disable video and audio, and select UHID (or AOA):
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```bash
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scrcpy --no-video --no-audio --keyboard=uhid --mouse=uhid --gamepad=uhid
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scrcpy --no-video --no-audio -KMG # short version
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scrcpy --no-video --no-audio --keyboard=aoa --mouse=aoa --gamepad=aoa
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```
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One benefit of UHID is that it also works wirelessly.
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