// Library
#include <WiFi.h>
// PIN LED
#define LED_BUILTIN 2
// SSID dan Password WiFi
const char *ssid = "RobotikID";
const char *password = "123456789";
// Objek kelas WiFiServer
// 80 adalah port
WiFiServer server(80);
// variabel kontrol LED dan Penampil di client
bool isLive = false;
String header;
void setup() {
// Atur PIN LED jadi Output
pinMode(LED_BUILTIN, OUTPUT);
// Serial Monitor
Serial.begin(115200);
Serial.println();
Serial.println("Mulai Konfigurasi");
// Menghubungkan ke WiFi
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
// Menampilkan Alamat IP dan Memulai web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
Serial.println("Memulai Server");
}
void loop() {
// Mengecek apakai ada client
WiFiClient client = server.available();
if (client) {
Serial.println("Client Baru");
String currentLine = "";
while (client.connected()) {
if (client.available()) {
// menerima dan koleksi data dari client request
char c = client.read();
header += c;
Serial.write(c);
if (c == '\n') {
if (currentLine.length() == 0) {
Serial.println();
// header untuk http
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println("Connection: close");
client.println();
// Display the HTML web page
client.println("<!DOCTYPE html><html>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
client.println("<link rel=\"icon\" href=\"data:,\">");
// CSS to style the on/off buttons
// Feel free to change the background-color and font-size attributes to fit your preferences
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
client.println(".button2 {background-color: #555555;}</style></head>");
// Heading Web
client.println("<body><h1>ESP32 Web Server</h1>");
// cek header dan memberikan perintah, led hidup / mati
if (header.indexOf("GET /26/H") >= 0) {
isLive = true;
digitalWrite(LED_BUILTIN, HIGH);
}
else if (header.indexOf("GET /27/L") >= 0) {
isLive = false;
digitalWrite(LED_BUILTIN, LOW);
}
// cek yang akan ditampilkan ke client
if (isLive == false) {
client.print("<p><a href=\"/26/H\"><button class=\"button\"> Hidupkan LED </button></a></p><br>");
}
else {
client.print("<p><a href=\"/27/L\"><button class=\"button button2\">Matikan LED </button></a></p><br>");
}
client.println("</body></html>");
client.println();
break;
} else {
// mengosongkan nilai
currentLine = "";
}
} else if (c != '\r') {
// mengumpulkan karakter dari client request
currentLine += c;
}
}
}
// Tutup Koneksi
header = "";
client.stop();
Serial.println("Client Disconnected.");
Serial.println();
}
}