Ethercard getNtpTime

gistfile1.c

unsigned long getNtpTime() {
  unsigned long timeFromNTP;
  const unsigned long seventy_years = 2208988800UL;
  
  ether.ntpRequest(ntpServer, ntpMyPort);
  Serial.println("NTP request sent");
  while(true) {
      word length = ether.packetReceive();
      ether.packetLoop(length);
      if(length > 0 && ether.ntpProcessAnswer(&timeFromNTP,ntpMyPort)) {
        Serial.println("NTP reply received");
        return timeFromNTP - seventy_years + timeZoneOffset;      
      }
  }
  
  return 0;
}