In order to have a controller working you need:
1) Have a matching HID autoconfig file in autoconfig/hid for your controller.
2) Create a "connect" driver for the pad in "input/connect" folder (source code of RA).
3) Once you are in RA, change the joystick driver to HID and restart.
4) You may be now able to use you USB HID compatible pad in RA.
I included some "connect" drivers as an example. It also need to include them for compilation.
The NVIDIA Button on the Nvidia Shield Controller and inputs received from CEC remotes
are detected as a "Virtual" controller on the Shield TV.
If a virtual controller is detected on the Shield TV before an actual game controller
then it will be configured as "Shield Virtual Device". This allows the use of the
buttons on a CEC remote to control the Retroarch menu and games.
When an actual controller is connected the Virtual Device will be overwritten and
the NVIDIA button of the Virtual device will be mapped to the controller as the
menu button.
This also fixes the situation where you press the NVIDIA Button before any other
button on the game controller and it does nothing. Now it will go into the
Retroarch menu even if it is the first button pressed.
A matching profile for "Nvidia Shield Virtual Controller" has been sent as a pull request to
the "retroarch-joypad-autoconfig" repository.
This solves the problem with volume buttons on phones being detected as
keyboards and blocking a real keyboard from being mapped afterwards.
Renamed id_1 and id_2 to pad_id1 and pad_id2
Renamed id_3 to kbd_id and change it to an array
Implement function is_keyboard_id(int id) which checks if an id is mapped as
a keyboard
radius