University project for FEUP, MIEIC (RCOM).

An asynchronous serial port (RS-232) data link protocol, accompanied by a simple application, showcasing the protocol's potential, that sends data complying with the protocol to transfer a file (See files/ for examples).

Run make in the root of the project. The download executable will be built inside a bin directory.

The application expects the following usage:

./bin/datalink  <send|receive> <serial port device name>

where send is used for sending a file, and receive for receiving a file; serial port device name should be one of the serial ports in /dev/, e.g. ttyS0. Natually, two computers must have a direct serial connection for the program to work successfully.