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Udp NTP Client
Get the time from a Network Time Protocol (NTP) time server
Demonstrates use of UDP sendPacket and ReceivePacket
For more on NTP time servers and the messages needed to communicate with them,
created 4 Sep 2010
by Michael Margolis
modified 17 Sep 2010
by Tom Igoe
This code is in the public domain.
#include <SPI.h>
#include <Ethernet.h>
#include <Udp.h>
#include <Time.h>
void SyncTime_setup();
unsigned long getNtpTime();
unsigned long sendNTPpacket(IPAddress& address);