Hey new to the forum and i need help with a project i have de2 boards and i need to have one board encode a message and the other board decode it and display it on a the 7 seg leds we have the encode/decode code but not sure how to get them to talk
If the data rate between the boards is low you could use the RS232.
You could use the 40-pin expansion connector and an appropriate cable with mating connectors to link the two boards.
If you don't mind more work and having a learning opportunity you could implement the connection using Ethernet UDP packets.
If you want a more painful development task and learning opportunity you can use the USB host/slave