I wrote a short program to see how the movements of the PSP analog stick would look like on screen as well as make it easier for me to get values to control the movements of a robot later on.

I connected the Analog Stick to the FI40 Controller Board, and had the values from the X & Y axis sent to the PC and plotted to the graph.

More information and write-ups in my blog post here:
mechail.wordpress.com/2009/04/23/psp-joystick-project-part-one/