Before the library will work, you must install a compatible boards file that contains the XInput USB descriptors, otherwise the microcontroller won't behave like an XInput device. This is not optional ...

In case you missed it, the big news is that a minimal Arduino core is up and working on the ESP32. There’s still lots left to do, but the core functionality — GPIO, UART, SPI, I2C, and WiFi — are all ...