#ifndef ION_DEVICE_USB_H
  #define ION_DEVICE_USB_H
  
  #include "regs/regs.h"
  
  namespace Ion {
  namespace USB {
  namespace Device {
  
  /*  Pin | Role              | Mode                  | Function
   * -----+-------------------+-----------------------+----------
   *  PA9 | VBUS              | Input, pulled down    | Low = unplugged, high = plugged
   */
  
  void init();
  void initGPIO();
  void shutdown();
  
  constexpr static GPIOPin VbusPin = GPIOPin(GPIOA, 9);
  
  }
  }
  }
  
  #endif