ESP8266 Community Forum

how to change the time of sending to the database currently the data is sent every 7 seconds and I would like to ultimately 15 minutes

Kod:
#include <ESP8266WiFi.h>
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

const char *ssid = ""; //nama wifi
const char *password = ""; //password
const char *host = ""; //IP PC

//memasukkan pin
int sensorPinDS18b20 = 4;

//membuat variabel kosong
float suhuC;

OneWire ourWire(sensorPinDS18b20);
DallasTemperature sensors(&ourWire);

void setup() {
Serial.begin(115200);
delay(1000);

Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}

void loop() {
sensors.requestTemperatures();
suhuC = sensors.getTempCByIndex(0);

Serial.print("connecting to ");
Serial.println(host);

WiFiClient client;
const int httpPort = 80;
if (!client.connect(host, httpPort))
{
Serial.println("connection failed");
return;
}

// We now create a URI for the request
String url = "/nodemcu-esp8266-with-DS18B20-Sensor-MySQL-Database/add.php?";
url += "suhu_air=";
url += suhuC;

Serial.print("Requesting URL: ");
Serial.println(url);

// This will send the request to the server
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");

unsigned long timeout = millis();
while (client.available() == 0)
{
if (millis() - timeout > 5000)
{
Serial.println(">>> Client Timeout !");
client.stop();
return;
}
}

// Read all the lines of the reply from server and print them to Serial
while (client.available())
{
String line = client.readStringUntil('\r');
//Serial.print(line);

if (line.indexOf("sukses gaes") != -1)
{
Serial.println();
Serial.println("Yes, data masuk");
}
else if (line.indexOf("gagal gaes") != -1)
{
Serial.println();
Serial.println("Maaf, data gagal masuk");
//digitalWrite(alarmPin, HIGH);
}
}

Serial.println();
Serial.println("closing connection");

//menampilkan hasil pembacaan sensor Suhu DS18b20
Serial.print("Suhu = ");
Serial.print(suhuC);
Serial.print(" ");
Serial.println("C");
delay(1000);
}
Kod PHP:
<?php
include('conn.php');

$sensor = $_GET['suhu_air'];

$sql = "INSERT INTO tbl_water (suhu_air) VALUES(:suhu_air)";

$stmt = $PDO->prepare($sql);

$stmt->bindParam(':suhu_air', $sensor);

if($stmt->execute()) {
echo "sukses gaes";
}else{
echo "gagal gaes";
}
?