Arduino Code Send Data to URL WEBCLIENT

Ini dasarnya ,..dida pat dari source code bawanarduino:


#include <SPI.h>
#include <Ethernet.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
//IPAddress server(74,125,232,128);  // numeric IP for Google (no DNS)
char server[] = "www.google.com";    // name address for Google (using DNS)

// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 177);

// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;

void setup() {
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing forevermore:
    // try to congifure using IP address instead of DHCP:
    Ethernet.begin(mac, ip);
  }
  // give the Ethernet shield a second to initialize:
  delay(1000);
  Serial.println("connecting...");

  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {
    Serial.println("connected");
    // Make a HTTP request:
    client.println("GET /search?q=arduino HTTP/1.1");
    client.println("Host: www.google.com");
    client.println("Connection: close");
    client.println();
  }
  else {
    // kf you didn't get a connection to the server:
    Serial.println("connection failed");
  }
}

void loop(){
  // if there are incoming bytes available
  // from the server, read them and print them:
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();

    // do nothing forevermore:
    while (true);
  }
}

=====================

Implementasinya:

INIT:

#include <SPI.h>

#include <Ethernet.h>

byte mac[] = { 

  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};

boolean received = false;

EthernetClient client;

float gas;

char server[] = "192.168.1.10"; 

unsigned long lastConnectionTime = 0;

boolean lastConnected = false;

const unsigned long postingInterval = 5000;  // delay between updates, in milliseconds

IPAddress ip(192, 168, 1, 212);

IPAddress gateway(192, 168, 1, 1);

IPAddress subnet(255, 255, 255, 0);

SETUP:

 Ethernet.begin(mac, ip, gateway, subnet); //jika hanya ingin menggunakan ip static

   

////  Serial.println("Trying to get an IP address using DHCP");

//  if (Ethernet.begin(mac) == 0) {

//    Serial.println("Failed to configure Ethernet using DHCP");

//    // initialize the ethernet device not using DHCP:

//    Ethernet.begin(mac, ip, gateway, subnet);

//  }

 // Ethernet.begin(mac, ip, gateway, subnet);

  // print your local IP address:

  Serial.print("My IP address: ");

  ip = Ethernet.localIP();

  for (byte thisByte = 0; thisByte < 4; thisByte++) {

    // print the value of each byte of the IP address:

    Serial.print(ip[thisByte], DEC);

    Serial.print(".");

  }

  Serial.println();

  // start listening for clients

void loop() {

  

  int sensorValue = analogRead(A0);

  gas = sensorValue * (100.0 / 1023.0);

....................................................

 while (client.available()) {

    char c = client.read();

    Serial.print(c);

    received = true;

  }

 if(received) {

        client.stop();

        received = false;

 }

  if (!client.connected() && lastConnected) {

    Serial.println();

    Serial.println("disconnecting.");

    client.stop();

  }

  if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {

    int i = random(10000);

    String reading = "1:" + String(i);

    httpRequest(reading);

  }

  lastConnected = client.connected();

  delay(100);

}//loop

void httpRequest(String val) {

  if (client.connect(server, 80)) {    

     client.println("GET /20185/lp2maray/webbiogas/simpan.php?p="+String(gas)+" HTTP/1.1");    

    //client.println("GET /appServer/simpan.php?kelembapan=80&suhu=30&tinggi=45&volume=80 HTTP/1.1");    

    client.println("Host: *HOST*");

    client.println("Connection: keep-open");

    client.println();

    lastConnectionTime = millis();

  } 

  else {

    Serial.println("connection failed");

    Serial.println("disconnecting.");

    client.stop();

  }

}

====================================

Sedang code di servernya sbb:

<?php

//http://192.168.1.2/appServer/simpan.php?kelembapan=80&suhu=30&tinggi=45&volume=80

//client.println("GET /appServer/simpan.php?kelembapan=80&suhu=30&tinggi=45&volume=80 HTTP/1.1");

 //http://localhost/20185/pnj/webbiogas/simpan.php?p=30.4

  

  

$DBServer = 'localhost';

$DBUser   = 'root';

$DBPass   = '';

$DBName   = 'db_biogaspnj';

$conn = new mysqli($DBServer, $DBUser, $DBPass, $DBName);

if ($conn->connect_error) {

  trigger_error('Database connection failed: '  . $conn->connect_error, E_USER_ERROR);

}

date_default_timezone_set("Asia/Jakarta");

$waktu=date("Y-m-d H:i:s");

$p=strip_tags($_GET["p"]);

$tanggal=date("Y-m-d");

$jam=date("H:i:s");

$sql=" INSERT INTO `tb_biogas` (`id`, `tanggal`, `jam`, `pressure`, `note`) VALUES ('', '$tanggal', '$jam', '$p', '-');";

$simpan=process($conn,$sql);

echo"#SUKSES".$waktu."<br>";

function process($conn,$sql){

$s=false;

$conn->autocommit(FALSE);

try {

  $rs = $conn->query($sql);

  if($rs){

    $conn->commit();

    $last_inserted_id = $conn->insert_id;

  $affected_rows = $conn->affected_rows;

  $s=true;

  }

} 

catch (Exception $e) {

echo 'fail: ' . $e->getMessage();

  $conn->rollback();

}

$conn->autocommit(TRUE);

return $s;

}

?>