code arduino

esp8266_code.ino

@@ -0,0 +1,112 @@
+#include <ESP8266WiFi.h>
+#include <WiFiClient.h>
+#include <ESP8266HTTPClient.h>
+#include <SPI.h>
+#include <MFRC522.h>
+
+#define RST_PIN 5  // Pin RST pada ESP8266 = d1
+#define SS_PIN 4   // Pin SDA (SS) pada ESP8266 = d2
+#define BUZZER_PIN 15 // Pin untuk buzzer (gunakan GPIO2 / D4)
+
+const char* ssid = "jtilt3";          // Ganti dengan SSID Wi-Fi
+const char* password = "12345678";    // Ganti dengan password Wi-Fi
+
+const String serverUrl = "http://192.168.5.238/keranjang.php";  // URL server
+
+MFRC522 mfrc522(SS_PIN, RST_PIN);  // Inisialisasi RFID reader
+
+void setup() {
+  Serial.begin(115200);
+  SPI.begin();
+  mfrc522.PCD_Init();
+
+  pinMode(BUZZER_PIN, OUTPUT); // Atur pin buzzer sebagai output
+  digitalWrite(BUZZER_PIN, LOW); // Matikan buzzer di awal
+
+  // Koneksi Wi-Fi
+  Serial.println("Connecting to Wi-Fi...");
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(700);
+    Serial.print(".");
+    buzz(150);
+  }
+  Serial.println("\nConnected to Wi-Fi");
+  Serial.println("IP Address: " + WiFi.localIP().toString());
+  buzz(600);
+}
+
+void loop() {
+  // Deteksi RFID baru
+  if (!mfrc522.PICC_IsNewCardPresent() || !mfrc522.PICC_ReadCardSerial()) {
+    delay(50);
+    return;
+  }
+
+  // Ambil UID dari RFID tag
+  String tagID = "";
+  for (byte i = 0; i < mfrc522.uid.size; i++) {
+    tagID += String(mfrc522.uid.uidByte[i], HEX);
+  }
+  tagID.toUpperCase();
+  Serial.println("Tag detected: " + tagID);
+
+ 
+  buzz(100); 
+
+  // Kirim data ke server
+  sendToServer(tagID);
+  delay(1000);
+}
+
+void sendToServer(String tagID) {
+  if (WiFi.status() == WL_CONNECTED) {
+    WiFiClient client;  
+    HTTPClient http;
+
+    String postData = "keranjang=1&rfid=" + tagID;  // Kirim data keranjang dan rfid_tag
+
+    http.begin(client, serverUrl);  
+    http.addHeader("Content-Type", "application/x-www-form-urlencoded");
+
+    Serial.println("Sending data to server...");
+    int httpResponseCode = http.POST(postData);  // Kirim data
+
+    if (httpResponseCode > 0) {
+      String response = http.getString();
+      Serial.println("Server response: " + response);
+
+      
+      buzz(200); 
+    } else {
+      Serial.println("Failed to send data. HTTP Response code: " + String(httpResponseCode));
+
+      
+      buzz(500); 
+    }
+
+    http.end();
+  } else {
+    Serial.println("Wi-Fi disconnected, cannot send data.");
+
+    
+    buzz(300); 
+  }
+}
+
+void checkServerConnection() {
+  WiFiClient client;
+  if (client.connect("192.168.5.238", 80)) {  
+    Serial.println("Server is reachable!");
+    client.stop();
+  } else {
+    Serial.println("Cannot reach the server.");
+  }
+}
+
+// Fungsi untuk mengontrol buzzer
+void buzz(int duration) {
+  digitalWrite(BUZZER_PIN, HIGH);
+  delay(duration);
+  digitalWrite(BUZZER_PIN, LOW);
+}