Repo Structure
The repository is comprised of two main branches. The main branch and the platform-io branch.
In the main branch, a .ino file is simply hosted and there the file can easily be added to the Arduino IDE and uploaded to your board of choice.
In the platform-io branch, all the files required for a PlatformIO project are configured so you should be able to simply clone the repository and then upload to a board of your choice via PlatformIO.
Imports
This project required 1 external library.
You’ll want to download and import the Ps4 Controller Host Library . You may be able to go ahead and simply do
#include <PS4Controller.h>