Arduino-libraries/NTPClient: Connect To A NTP Server - GitHub

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NTPClient

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Connect to an NTP server, here is how:

#include <NTPClient.h> // change next line to use with another board/shield #include <ESP8266WiFi.h> //#include <WiFi.h> // for WiFi shield //#include <WiFi101.h> // for WiFi 101 shield or MKR1000 #include <WiFiUdp.h> const char *ssid = "<SSID>"; const char *password = "<PASSWORD>"; WiFiUDP ntpUDP; // By default 'pool.ntp.org' is used with 60 seconds update interval and // no offset NTPClient timeClient(ntpUDP); // You can specify the time server pool and the offset, (in seconds) // additionally you can specify the update interval (in milliseconds). // NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 3600, 60000); void setup(){ Serial.begin(115200); WiFi.begin(ssid, password); while ( WiFi.status() != WL_CONNECTED ) { delay ( 500 ); Serial.print ( "." ); } timeClient.begin(); } void loop() { timeClient.update(); Serial.println(timeClient.getFormattedTime()); delay(1000); }

Function documentation

getEpochTime returns the Unix epoch, which are the seconds elapsed since 00:00:00 UTC on 1 January 1970 (leap seconds are ignored, every day is treated as having 86400 seconds). Attention: If you have set a time offset this time offset will be added to your epoch timestamp.

Tag » Arduino Ntpclient.h