Homebrew Configuration file for arcade control in retroarch

[Lailson]

Guys, help me create a configuration file for the backfile of this arcade control panel (picture attached), I have no idea how it works, can anyone help? I'm seeing these sites: https://github.com/Maschell/controller_patcher/wiki and https://github.com/Maschell/hid_test
There is also a tutorial on youtube: [MEDIA = youtube] Cy7IEYOlppM [/ MEDIA] that teaches how it works, but for other controls it is also possible to do this scheme, according to information from a friend, the same files that are in sd> wiiu > controller for hidtovpad is also used for backfile, so I'm going this way, thanks in advance to all of you

 

[fmhugo]

This a tutorial section, mate.

 

[Lailson]

This a tutorial section, mate.

could you please tell me the right place please?

 

[unsteadycarrot]

could you please tell me the right place please?

Possibly the homebrew section, hopefully this request doesn't get forgotten about as i would also like to know more about this.

I currently have my wii u sitting in my PS2 arcade machine using hid to vpad as controls for wii u games, but would love to get the controls working on my gc/wii injects and retroarch.