this->_udp = &udp;

this->_timeOffset = timeOffset;

this->_poolServerName = poolServerName;

this->_udp = &udp;

this->_timeOffset = timeOffset;

this->_poolServerName = poolServerName;

this->_updateInterval = updateInterval;

this->_port = port;

this->_udp->begin(this->_port);

this->_udpSetup = true;

#ifdef DEBUG_NTPClient

Serial.println("Update from NTP Server");

#endif

this->sendNTPPacket();

// Wait till data is there or timeout...

byte timeout = 0;

int cb = 0;

do {

delay ( 10 );

cb = this->_udp->parsePacket();

if (timeout > 100) return false; // timeout after 1000 ms

timeout++;

} while (cb == 0);

this->_lastUpdate = millis() - (10 * (timeout + 1)); // Account for delay in reading the time

this->_udp->read(this->_packetBuffer, NTP_PACKET_SIZE);

unsigned long highWord = word(this->_packetBuffer[40], this->_packetBuffer[41]);

unsigned long lowWord = word(this->_packetBuffer[42], this->_packetBuffer[43]);

// combine the four bytes (two words) into a long integer

// this is NTP time (seconds since Jan 1 1900):

unsigned long secsSince1900 = highWord << 16 | lowWord;

this->_currentEpoc = secsSince1900 - SEVENZYYEARS;

return true;

if ((millis() - this->_lastUpdate >= this->_updateInterval) // Update after _updateInterval

|| this->_lastUpdate == 0) { // Update if there was no update yet.

if (!this->_udpSetup) this->begin(); // setup the UDP client if needed

return this->forceUpdate();

}

return true;

return this->_timeOffset + // User offset

this->_currentEpoc + // Epoc returned by the NTP server

((millis() - this->_lastUpdate) / 1000); // Time since last update

unsigned long rawTime = this->getEpochTime();

unsigned long hours = (rawTime % 86400L) / 3600;

String hoursStr = hours < 10 ? "0" + String(hours) : String(hours);

unsigned long minutes = (rawTime % 3600) / 60;

String minuteStr = minutes < 10 ? "0" + String(minutes) : String(minutes);

unsigned long seconds = rawTime % 60;

String secondStr = seconds < 10 ? "0" + String(seconds) : String(seconds);

return hoursStr + ":" + minuteStr + ":" + secondStr;

this->_udp->stop();

this->_udpSetup = false;

// set all bytes in the buffer to 0

memset(this->_packetBuffer, 0, NTP_PACKET_SIZE);

// Initialize values needed to form NTP request

// (see URL above for details on the packets)

this->_packetBuffer[0] = 0b11100011; // LI, Version, Mode

this->_packetBuffer[1] = 0; // Stratum, or type of clock

this->_packetBuffer[2] = 6; // Polling Interval

this->_packetBuffer[3] = 0xEC; // Peer Clock Precision

// 8 bytes of zero for Root Delay & Root Dispersion

this->_packetBuffer[12] = 49;

this->_packetBuffer[13] = 0x4E;

this->_packetBuffer[14] = 49;

this->_packetBuffer[15] = 52;

// all NTP fields have been given values, now

// you can send a packet requesting a timestamp:

this->_udp->beginPacket(this->_poolServerName, 123); //NTP requests are to port 123

this->_udp->write(this->_packetBuffer, NTP_PACKET_SIZE);

this->_udp->endPacket();