This text comes from the hardware manual section 27.3:
The USB controller can be configured to act as either a dedicated host or device, in which case, the USB0VBUS and USB0ID signals can be used as GPIOs or any corresponding alternate functions. However, when the USB controller is acting as a self-powered device, a GPIO input or analog comparator input must be connected to VBUS and configured to generate an interrupt when the VBUS level drops. This interrupt is used to disable the pullup resistor on the USB0DP signal.
I need to use the VBUS pin (PB1) as a UART. I have VBUS connected to a different pin through a resistor divider to generate the interrupt. How to I disable the pullup resistor as stated above? I am using the USB drivers supplied with the SimpleLink libraries.
Is there any special configuration needed to use PB1 as a UART instead of VBUS?