I have a system that consists of a controller, keypads, and modules. They all communicate using either RS-422 or RS-485, based on the chip that's on the board. I don't know which protocol it's using.
I did some searching and couldn't find any answers. Can I use Bus Pirate to figure out if it's RS-485 or RS-422? How?
Also, I'm assuming that if this is possible, I'll also be able to sniff the data going over it so I can reverse engineer the protocol.