Hi there, I searched a lot and read many different answers to this topic.
I'm currently use a RPI 3B+ and need a fast UART connection.

My questions are:

• How fast can the Pi go? More than 1mbps? And why?

• Which configs need to change to reach this baudrate?

You will learn more if you try communicating between two devices at such a high baud rate. The problems will soon become apparent. There was a lot of problems but it can be done. I know that it took a lot of time but I created comunnication beetwen RPi and other side devices (parallel connection) u...