A serial interface is a simple way to connect an FPGA to a PC. We just need a transmitter and receiver module.

Async transmitter

It creates a signal "TxD" by serializing the data to transmit.

Async receiver

It takes a signal "RxD" from outside the FPGA and "de-serializes" it for easy use inside the FPGA.

This project has five parts

1. How the RS-232 serial interface works
2. Baud generator
3. Transmitter
4. Receiver
5. Example of use

The project's code can be found here.

• Serial interface 1 - How the RS-232 serial interface works ❯