External function to query vbus status. Reading from the block requires the clock, but if no devices are open -> vbus detect does not work. This creates a chicken / egg problem, if vbus detect is used to start the usb device.
External function to query vbus status. Reading from the block requires the clock, but if no devices are open -> vbus detect does not work. This creates a chicken / egg problem, if vbus detect is used to start the usb device.