VBUS is "USB bus voltage". When a USB cable is connected, you'll see voltage (high state / true) on that pin. By using the PullDown internal resistor, one avoids getting false high readings from a disconnected (floating) pin.
Hello all. I'm new to Netduino.
How can I detect if USB is connected?
Yes. I've been testing it and works perfect!
Thanks a lot. I read your answers in other posts and I can only say: You are the man. Thanks for your work in this fantastic forum.
Chris, perhaps the code you use for QA could be hosted on GitHub? Seems like that would be code which is useful for developers wanting to figure out how to do stuff.