Kartlı Sistem Programlarınızı Hazırlayabilirim

#include <SPI.h>
#include <MFRC522.h>
#include <WiFiClient.h>

#define SS_PIN 10
#define RST_PIN 9

MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance

const char *ssid = "your_wifi_ssid";
const char *password = "your_wifi_password";
const char *apiEndpoint = "http://your-api-endpoint.com/api";

void setup() {
  Serial.begin(9600);
  SPI.begin();
  mfrc522.PCD_Init();
  connectToWiFi();
}

void loop() {
  if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
    String cardID = getCardID();
    sendToAPI(cardID);
    delay(28800); // Wait for a second to avoid reading the same card multiple times ( 8 hours ) - Don't forget changing that part for urself. !!!
  }
}

String getCardID() {
  String cardID = "";
  for (byte i = 0; i < mfrc522.uid.size; i++) {
    cardID += String(mfrc522.uid.uidByte[i] < 0x10 ? "0" : "");
    cardID += String(mfrc522.uid.uidByte[i], HEX);
  }
  cardID.toUpperCase();
  return cardID;
}

void sendToAPI(String cardID) {
  WiFiClient client;
  if (client.connect(apiEndpoint, 80)) {
    String url = "/sendcardid?cardid=" + cardID; // Update the URL with your API endpoint
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: " + apiEndpoint + "\r\n" +
                 "Connection: close\r\n\r\n");
    delay(10);
    while (client.available()) {
      char c = client.read();
      Serial.print(c);
    }
    Serial.println();
    client.stop();
  }
}

void connectToWiFi() {
  Serial.print("Connecting to WiFi");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("Connected to WiFi");
}