I just got a BF538F ez kit lite and am trying to figure out how to use it. I'm trying to start just by controlling some GPIO pins. After looking through the ADSP-BF538F BF processor hardware reference I found the GPIO registers I need to use (PORTCIO_FER, PORTCIO_DIR, _INEN, _SET, _CLEAR, etc). However the compiler does not recognize any of these register names. It's because I need to #include a file for the BF538F processor, right? What is this file/where in the documentation can I find things like this?