I have the MSP432P401R Launchpad and the BOOSTXL-EDUMKII. I am using the software example files provided on this site for this part and there is file to test the joystick. I can run the file using code composer studio and everything compiles fun. When I run it in debug mode the text comes up on the LCD screen showing the status of the joystick. It shows the x and y components as well as whether the button is turned on or not. I have seen on other boards that these values change as the joystick moves, however, on my board the values do not change as I move the joystick.