Interrupt upon receiving data through USB UART

[mitchellclaxton]

I tried searching this forum for a similar thread but i couldn't find anything.

I'm controlling a robot with an ESP32 from a laptop via COM port. I don't want to continuously poll for data (Serial.available()).

On TI MSP430 boards we could have an ISR when the board receives bytes via USB.

How do i do this for the ESP32-WROVER in Arduino IDE?

I have a feeling it's an easy thing to implement but I don't know what pin the USB UART is on so I don't know how to attach it.

Or it is even required to attach one.

Please help! Thank you.

[boarchuz]

3 is Rx