* There are two different methods of sending a SRP - either pulses on the VBUS line, or by\r
* pulsing the Data + line via the internal pull-up resistor.\r
*\r
* There are two different methods of sending a SRP - either pulses on the VBUS line, or by\r
* pulsing the Data + line via the internal pull-up resistor.\r
*\r