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Re: I/O
In its normal mode, the Cypress board can read the state of a bunch of switches and a handful of knobs, and control a few LEDs. In "enhanced" mode, it can also read encoders, touch sensors, and built-in accelerometers, and generate voltages and PWM signals. It is indeed a good way to implement a "button box" in addition to the USB joysticks or game controllers.
You don't actually program the board itself. The Driver Station application reads it for you and passes the information on to the robot, where the program on the cRIO can read the values of the switches and knobs connected to the board. You will find the functions for reading it in either the Compatibility IO or Enhanced IO subpalettes (they're in the DriverStation section of the WPI Robotics Library functions).
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