Error class ntpclient has no member named getformatteddate

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In this tutorial we’ll show you how to get date and time using the ESP32 and Arduino IDE. Getting date and time is especially useful in data logging to timestamp your readings. If your ESP32 project has access to the Internet, you can get date and time using Network Time Protocol (NTP) – you don’t need any additional hardware.

Note: there’s an easier and updated guide to get date and time with the ESP32 with the pre-installed time.h library: ESP32 NTP Client-Server: Get Date and Time (Arduino IDE).

Before proceeding with this tutorial you should have the ESP32 add-on installed in your Arduino IDE. Follow one of the following tutorials to install the ESP32 on the Arduino IDE, if you haven’t already.

• Installing the ESP32 Board in Arduino IDE (Windows instructions)
• Installing the ESP32 Board in Arduino IDE (Mac and Linux instructions)

NTP Client Library

The easiest way to get date and time from an NTP server is using an NTP Client library. For that we’ll be using the NTP Client library forked by Taranais. Follow the next steps to install this library in your Arduino IDE:

1. Click here to download the NTP Client library. You should have a .zip folder in your Downloads
2. Unzip the .zip folder and you should get NTPClient-master folder
3. Rename your folder from NTPClient-master to NTPClient
4. Move the NTPClient folder to your Arduino IDE installation libraries folder
5. Finally, re-open your Arduino IDE

Getting Date and Time from NTP Server

Here we provide a sample code to get date and time from the NTP Server. This example was modified from one of the library examples.

/*********
  Rui Santos
  Complete project details at https://randomnerdtutorials.com
  Based on the NTP Client library example
*********/

#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);
}

View raw code

To get more NTP examples, in the Arduino IDE, go to File > Examples > NTPClient.

How the Code Works

Let’s take a quick look at the code to see how it works. First, you include the libraries to connect to Wi-Fi and get time and create an NTP client.

#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>

Setting SSID and password

Type your network credentials in the following variables, so that the ESP32 is able to establish an Internet connection and get date and time from the NTP server.

// Replace with your network credentials
const char* ssid = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";

Preparing NTP Client

The following two lines define an NTP Client to request date and time from an NTP server.

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

Then, initialize String variables to save the date and time.

String formattedDate;
String dayStamp;
String timeStamp;

In the setup() you initialize the Serial communication at baud rate 115200 to print the results:

Serial.begin(115200);

These next lines connect the ESP32 to your router.

// 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());

Next, initialize the NTP client to get date and time from an NTP server.

timeClient.begin();

You can use the setTimeOffset() method to adjust the time for your timezone in seconds.

timeClient.setTimeOffset(3600);

Here are some examples for different timezones:

• GMT +1 = 3600
• GMT +8 = 28800
• GMT -1 = -3600
• GMT 0 = 0

These next lines ensure that we get a valid date and time:

while(!timeClient.update()) {
  timeClient.forceUpdate();
}

Note: sometimes the NTP Client retrieves 1970. To ensure that doesn’t happen we need to force the update.

Getting date and time

Then, convert the date and time to a readable format with the getFormattedDate() method:

formattedDate = timeClient.getFormattedDate();

The date and time are returned in the following format:

2018-04-30T16:00:13Z

If you want to get date and time separately, you need to split that string. The “T” letter separates the date from the time, so we can easily split that String. That’s what we do in these next lines.

// Extract date
int splitT = formattedDate.indexOf("T");
dayStamp = formattedDate.substring(0, splitT);
Serial.println(dayStamp);
// Extract time
timeStamp = formattedDate.substring(splitT+1, formattedDate.length()-1);
Serial.println(timeStamp);

The date is saved on the dayStamp variable, and the time on the timeStamp variable.The time is requested and printed in every second.

Testing the Code

Upload the code to the ESP32. Make sure you have the right board and COM port selected. After uploading the code, press the ESP32 “Enable” button, and you should get the date and time every second as shown in the following figure.

Wrapping Up

In this tutorial we’ve shown you how to easily get date and time with the ESP32 on the Arduino IDE using an NTP server. The code provided is not useful by itself. The idea is to use the example provided in this guide in your own projects to timestamp your sensor readings.

This method only works if the ESP32 is connected to the Internet. If your project doesn’t have access to the internet, you need to use other method. You can use an RTC module like the DS1307.

We have other tutorials related with ESP32 that you may also like:

• Learn ESP32 with Arduino IDE Course
• ESP32 Data Logging Temperature to MicroSD Card
• ESP32 Publish Sensor Readings to Google Sheets
• Build an All-in-One ESP32 Weather Station Shield
• Getting Started with ESP32 Bluetooth Low Energy (BLE)
• ESP32 with LoRa using Arduino IDE

Thanks for reading.

#include <Wire.h>
#include «Adafruit_LiquidCrystal.h»
#include <BMP085.h>
#include «stDHT.h»
#include <OneWire.h> //подключаем библиотеку
DHT sens(DHT22); // Указать датчик DHT11, DHT21 или DHT22. (несколько датчиков вписывать не нужно)
// Подключать можно только одинаковые датчики, то есть нельзя использовать одновременно DHT11 и DHT22
BMP085 dps = BMP085();
OneWire ds(8); // Номер ноги к которой подключили датчик

long int Temperature = 0, Pressure = 0;

// initialize the library with the numbers of the interface pins
Adafruit_LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup()
{
Serial.begin(9600);
pinMode(6, INPUT);
digitalWrite(2, HIGH);
pinMode(7, INPUT);
digitalWrite(3, HIGH);
Wire.begin();
delay(1000);
dps.init();

// set up the LCD’s number of rows and columns:
lcd.begin(20, 4);
}

void loop()
{

byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius, fahrenheit;

if ( !ds.search(addr)) {

ds.reset_search();
delay(250);
return;
}

for( i = 0; i < 8; i++) {
Serial.write(‘ ‘);
}

if (OneWire::crc8(addr, 7) != addr[7]) {
return;
}

// Первый байт ROM указывает, какой чип
switch (addr[0]) {
case 0x10:
type_s = 1;
break;
case 0x28:
type_s = 0;
break;
case 0x22:
type_s = 0;
break;
default:
return;
}

ds.reset();
ds.select(addr);
ds.write(0x44, 1);
delay(1000);
present = ds.reset();
ds.select(addr);
ds.write(0xBE);

for ( i = 0; i < 9; i++) {
data = ds.read();
}

This might be a longshot before I replace this library but hey maybe someone here have some clues.

I’m using the latest version of this library in various projects. This works reliably for even the long run with the first server not with the second. With the second it works sometimes then at 1 point it decides not to, even if I restart the ESP8266 many times.

Just don’t get it why. From my laptop or from other workstations both NTP servers providing the correct date, also there are no firewalls. The working version is even an older one.

WORKING SERVER

ii ntp 1:4.2.6.p5+dfsg-2+deb7u7 amd64 Network Time Protocol daemon and utility programs

ntpdate -d 1.2.3.4
23 Nov 18:10:12 ntpdate[937]: ntpdate 4.2.8p10@1.3728-o Sun Feb 25 21:22:56 UTC 2018 (1)
transmit(1.2.3.4)
receive(1.2.3.4)
transmit(1.2.3.4)
receive(1.2.3.4)
transmit(1.2.3.4)
receive(1.2.3.4)
transmit(1.2.3.4)
receive(1.2.3.4)
server 1.2.3.4, port 123
stratum 2, precision -23, leap 00, trust 000
refid [1.2.3.4], delay 0.05536, dispersion 0.00018
transmitted 4, in filter 4
reference time:    e5479db3.59bf632e  Tue, Nov 23 2021 18:04:51.350
originate timestamp: e5479efa.89d517e5  Tue, Nov 23 2021 18:10:18.538
transmit timestamp:  e5479efa.86ca5636  Tue, Nov 23 2021 18:10:18.526
filter delay:  0.05574  0.05536  0.05550  0.05571 
         0.00000  0.00000  0.00000  0.00000 
filter offset: -0.00356 -0.00356 -0.00334 -0.00325
         0.000000 0.000000 0.000000 0.000000
delay 0.05536, dispersion 0.00018
offset -0.003561

23 Nov 18:10:18 ntpdate[937]: adjust time server 1.2.3.4 offset -0.003561 sec

BROKEN SERVER

ii ntp 1:4.2.8p10+dfsg-3+deb9u2 armhf Network Time Protocol daemon and utility programs

ntpdate -d 1.2.3.5
23 Nov 18:11:08 ntpdate[2079]: ntpdate 4.2.8p10@1.3728-o Sun Feb 25 21:22:56 UTC 2018 (1)
transmit(1.2.3.5)
receive(1.2.3.5)
transmit(1.2.3.5)
receive(1.2.3.5)
transmit(1.2.3.5)
receive(1.2.3.5)
transmit(1.2.3.5)
receive(1.2.3.5)
server 1.2.3.5, port 123
stratum 3, precision -20, leap 00, trust 000
refid [1.2.3.5], delay 0.02670, dispersion 0.00012
transmitted 4, in filter 4
reference time:    e5479a5b.b6d2279b  Tue, Nov 23 2021 17:50:35.714
originate timestamp: e5479f33.12da26e4  Tue, Nov 23 2021 18:11:15.073
transmit timestamp:  e5479f33.1433e734  Tue, Nov 23 2021 18:11:15.078
filter delay:  0.02676  0.02670  0.02708  0.02684 
         0.00000  0.00000  0.00000  0.00000 
filter offset: -0.00617 -0.00596 -0.00574 -0.00606
         0.000000 0.000000 0.000000 0.000000
delay 0.02670, dispersion 0.00012
offset -0.005969

23 Nov 18:11:15 ntpdate[2079]: adjust time server 1.2.3.5 offset -0.005969 sec

It is also not a network connection issue, the ESP8266 can connect to the wifi fine it just can’t get the time from the NTP for some reason.

Any ideas how to proceed with this?