- Fri Oct 11, 2019 8:03 pm
#84134
I don't use Arduino much, but this is the library I have always used for NTP when I do
https://www.arduinolibraries.info/libraries/ntp-client
maybe try a different library?
Here's a sample sketch based on this lib - credit to the original coder
https://www.arduinolibraries.info/libraries/ntp-client
maybe try a different library?
Here's a sample sketch based on this lib - credit to the original coder
Code: Select all
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
// Replace with your network credentials
const char* ssid = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";
// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);
// Variables to save date and time
String formattedDate;
String dayStamp;
String timeStamp;
void setup() {
// Initialize Serial Monitor
Serial.begin(115200);
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// Initialize a NTPClient to get time
timeClient.begin();
// Set offset time in seconds to adjust for your timezone, for example:
// GMT +1 = 3600
// GMT +8 = 28800
// GMT -1 = -3600
// GMT 0 = 0
timeClient.setTimeOffset(3600);
}
void loop() {
while(!timeClient.update()) {
timeClient.forceUpdate();
}
// The formattedDate comes with the following format:
// 2018-05-28T16:00:13Z
// We need to extract date and time
formattedDate = timeClient.getFormattedDate();
Serial.println(formattedDate);
// Extract date
int splitT = formattedDate.indexOf("T");
dayStamp = formattedDate.substring(0, splitT);
Serial.print("DATE: ");
Serial.println(dayStamp);
// Extract time
timeStamp = formattedDate.substring(splitT+1, formattedDate.length()-1);
Serial.print("HOUR: ");
Serial.println(timeStamp);
delay(1000);
}
