firebase-gps.ino

#include <WiFi.h>
#include <HTTPClient.h>
#include <TinyGPSPlus.h>

// Wi-Fi credentials
const char* ssid = "MurgaDealers";
const char* password = "ptuz42069";

// Firebase URL
const char* serverName = "https://myperro-gps-post-test-default-rtdb.asia-southeast1.firebasedatabase.app/test.json";

// Define RX and TX pins for the GPS module
#define RXD2 22
#define TXD2 21

TinyGPSPlus gps; // Create an instance of TinyGPSPlus
HardwareSerial gpsSerial(2); // Use Serial2 for GPS communication

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
  gpsSerial.begin(9600, SERIAL_8N1, RXD2, TXD2);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to Wi-Fi!");
}

void loop() {
  // Check for GPS data availability
  while (gpsSerial.available() > 0) {
    char c = gpsSerial.read();
    gps.encode(c); // Process GPS data

    // Output satellite count regularly
    Serial.print("Satellites connected: ");
    Serial.println(gps.satellites.value());

    if (gps.location.isValid()) {
      float latitude = gps.location.lat();
      float longitude = gps.location.lng();

      Serial.print("Latitude: ");
      Serial.println(latitude);
      Serial.print("Longitude: ");
      Serial.println(longitude);

      // Send valid GPS data to Firebase
      sendToFirebase(latitude, longitude, gps.satellites.value());
    } else {
      Serial.println("Waiting for valid GPS signal...");
    }

    delay(2000); // Sleep for 2 seconds before the next update
  }
}

void sendToFirebase(float latitude, float longitude, int satellites) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;

    // Start HTTP connection
    http.begin(serverName);
    http.addHeader("Content-Type", "application/json");

    // Prepare JSON payload with latitude, longitude, and satellite count
    String jsonPayload = "{\"latitude\":" + String(latitude) + ",\"longitude\":" + String(longitude) + ",\"satellites\":" + String(satellites) + "}";

    // Send POST request
    int httpResponseCode = http.POST(jsonPayload);

    // Handle response
    if (httpResponseCode > 0) {
      Serial.print("HTTP Response code: ");
      Serial.println(httpResponseCode);
    } else {
      Serial.print("Error code: ");
      Serial.println(httpResponseCode);
    }

    // End HTTP connection
    http.end();
  } else {
    Serial.println("Wi-Fi disconnected!");
  }
}