struct tm tm1;

   tm1.tm_sec  = LPC_RTC->SEC;   /* seconds after the minute, 0 to 60 (0 - 60 allows for the occasional leap second) */
   tm1.tm_min    = LPC_RTC->MIN;   /* minutes after the hour, 0 to 59 */
   tm1.tm_hour  = LPC_RTC->HOUR; /* hours since midnight, 0 to 23 */
   tm1.tm_mday = LPC_RTC->DOM;   /* day of the month, 1 to 31 */
   tm1.tm_mon  = LPC_RTC->MONTH;/* months since January, 0 to 11 */
   tm1.tm_year  = LPC_RTC->YEAR-1900;/* years since 1900 */

  while(1)
  {
    SystemTime.tm_sec  = RTCREG_SEC;
    SystemTime.tm_min  = RTCREG_MIN;
    SystemTime.tm_hour = RTCREG_HOUR;
    SystemTime.tm_mday = RTCREG_DOM;
    SystemTime.tm_mon  = RTCREG_MONTH - 1;
    SystemTime.tm_year = RTCREG_YEAR - 1900;
    SystemTime.tm_wday = RTCREG_DOW;
    SystemTime.tm_yday = RTCREG_DOY;
    SystemTime.tm_isdst = -1;
    // Check for time and data change
    if(RTCREG_SEC == SystemTime.tm_sec)
      break;
  }