usb_suspend.h

reference about wireless design which is helpful to everyone

#ifndef USB_SUSPEND_H
#define USB_SUSPEND_H
/** \addtogroup module_usb_suspend USB Suspend (usbsusp)
 * \brief This module contains the functionality for USB suspend, USB resume and USB remote wakeup.
 *
 * To comply with the USB specification some care must be taken when implementing this functionality, please follow the explanation below carefully.
 *
 * \section usb_suspend_resume To implement the USB suspend and USB resume:
 * \li Make sure that the 48 MHz XOSC is never turned off anywhere in the application.
 * \li In the main loop, add the code shown below. Make sure that the code below is run at least every 10 ms.
 * If the main loop use longer than 10 ms to complete one round, the code must be inserted multiple places. \n
 * Do NOT insert this code into any interrupt service routine.
 * \code
 * // Handle USB suspend
 * if (USBIRQ_GET_EVENT_MASK() & USBIRQ_EVENT_SUSPEND) {
 *
 *    USBIRQ_CLEAR_EVENTS(USBIRQ_EVENT_SUSPEND);// Clear USB suspend interrupt
 *    //