Connect to a NTP server
b4dbfbde48
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| .github | ||
| examples | ||
| .codespellrc | ||
| CHANGELOG | ||
| keywords.txt | ||
| library.properties | ||
| NTPClient.cpp | ||
| NTPClient.h | ||
| README.md | ||
NTPClient
Connect to a 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)
// additionaly 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.