Reading and writing to RX/TX on vex

How would I read and write to the RX/TX ports on top of the vex (next to the 16 digital I/O ports) in mplab? Any help or information at all would be helpful.


I’m not familiar with the vex platform, but I know that if I wanted to do something like this on the normal IFI controller, I would look at the datasheet for the chip inside the controller. Find the registers that control the USART and see what values are needed for sending/receiving.