We're looking at the possibility of designing an ultrasonic occupancy sensor for aerospace application, but I can't recommend this product. It doesn't look quite ready for prime time.
What tools do I use to write code for the 8051 inside the PGA450?
The TIDA-00151 reference design looks very new. Are you working on some documentation?
We bought the EVM, but I can't get the GUI to run. I get an error about not being able to find a Microsoft Office file. Does it need Microsoft Office installed? I don't see anything about that in the documentation. That particular computer only has Open Office.