Bugfix for Joystick and JSON schema (#14295)

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Ryan 2021-09-09 10:27:58 +10:00 committed by GitHub
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The keyboard can be made to be recognized as a joystick HID device by the operating system.
This is enabled by adding `JOYSTICK_ENABLE` to `rules.mk`. You can set this value to `analog`, `digital`, or `no`.
!> Joystick support is not currently available on V-USB devices.
The joystick feature provides two services:
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To use analog input you must first enable it in `rules.mk`:
```makefile
JOYSTICK_ENABLE = analog
JOYSTICK_ENABLE = yes
JOYSTICK_DRIVER = analog # or 'digital'
```
An analog device such as a potentiometer found on a gamepad's analog axes is based on a [voltage divider](https://en.wikipedia.org/wiki/Voltage_divider).