connection failed to localhost
Posted: Sat Nov 21, 2020 9:47 pmHai, I'm a newbie here. I've a problem with my project. I'd like to send my sensor data to local database(MySql/XAMPP). I'm using Wemos D1 mini and max30102 as a sensor. It's success to connect to WiFi but in the serial monitor it's failed to connect to localhost.
This is my ESP8266/Wemos code
and this is my php code for connection
This is my ESP8266/Wemos code
Code: Select all
#include <ESP8266WiFi.h>
#include "MAX30105.h"
#include "heartRate.h"
MAX30105 particleSensor;
const byte RATE_SIZE = 4; //Increase this for more averaging. 4 is good.
byte rates[RATE_SIZE]; //Array of heart rates
byte rateSpot = 0;
long lastBeat = 0; //Time at which the last beat occurred
float beatsPerMinute;
int beatAvg;
WiFiClient client;
char * ssid = "fjarian";
char * password = "rgyp3776";
char * host = "localhost";
void setup()
{
Serial.begin(115200);
Serial.println("Initializing...");
if (!particleSensor.begin(Wire, I2C_SPEED_FAST))
{
Serial.println("MAX30105 was not found. Please check wiring/power. ");
while (1);
}
Serial.println("Place your index finger on the sensor with steady pressure.");
particleSensor.setup(); //Configure sensor with default settings
particleSensor.setPulseAmplitudeRed(0x0A); //Turn Red LED to low to indicate sensor is running
particleSensor.setPulseAmplitudeGreen(0); //Turn off Green LED
particleSensor.enableDIETEMPRDY();
delay(1000);
// We start by connecting to a WiFi network
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()
{
long irValue = particleSensor.getIR();
float temperature = particleSensor.readTemperature();
while (checkForBeat(irValue) == true)
{
//We sensed a beat!
long delta = millis() - lastBeat;
lastBeat = millis();
beatsPerMinute = 60 / (delta / 1000.0);
if (beatsPerMinute < 255 && beatsPerMinute > 20)
{
rates[rateSpot++] = (byte)beatsPerMinute; //Store this reading in the array
rateSpot %= RATE_SIZE; //Wrap variable
//Take average of readings
beatAvg = 0;
for (byte x = 0 ; x < RATE_SIZE ; x++)
beatAvg += rates[x];
beatAvg /= RATE_SIZE;
}
}
float bpm = beatsPerMinute;
int avgbpm = beatAvg;
Serial.print("connecting to ");
Serial.println(host);
// Use WiFiClient class to create TCP connections
WiFiClient client;
const int httpPort = 80;
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}
// This will send the request to the server
client.print(String("GET http://localhost/iot_project/connect.php?") +
("&temperature=") + temperature +
("&bpm=") + bpm +
("&avgbpm=") + avgbpm +
" 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 > 1000) {
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);
}
Serial.println();
Serial.println("closing connection");
}
and this is my php code for connection
Code: Select all
<html>
<body>
<?php
$dbname = 'example';
$dbuser = 'example';
$dbpass = '';
$dbhost = 'localhost';
$connect = @mysqli_connect($dbhost,$dbuser,$dbpass,$dbname);
if(!$connect){
echo "Error: " . mysqli_connect_error();
exit();
}
echo "Connection Success!<br><br>";
$temperature = $_GET["temperature"];
$humidity = $_GET["bpm"];
$humidity = $_GET["avgbpm"];
$query = "INSERT INTO iot_project (temperature, bpm, avgbpm) VALUES ('$temperature', '$bpm', '$avgbpm')";
$result = mysqli_query($connect,$query);
echo "Insertion Success!<br>";
?>
</body>
</html>
...