Upload files to "Kode Program ESP32"
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#include <TinyGPS++.h>
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#include <HardwareSerial.h>
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// Definisikan Serial untuk LoRa dan GPS
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HardwareSerial SerialAT(2); // Menggunakan UART2 untuk LoRa
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HardwareSerial GPSSerial(1); // Menggunakan UART1 untuk GPS
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TinyGPSPlus gps;
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const int buttonPin = 18; // Pin untuk pushbutton
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bool buttonState = false; // Variabel untuk menyimpan status pushbutton
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void setup() {
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Serial.begin(115200);
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// Inisialisasi Serial untuk LoRa
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SerialAT.begin(9600, SERIAL_8N1, 4, 5);
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// Inisialisasi Serial untuk GPS
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GPSSerial.begin(9600, SERIAL_8N1, 16, 17);
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// Inisialisasi pin pushbutton sebagai input
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pinMode(buttonPin, INPUT_PULLUP);
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Serial.println("GPS dan LoRa Mulai");
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}
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void loop() {
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// Membaca data dari modul GPS
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while (GPSSerial.available()) {
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gps.encode(GPSSerial.read());
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}
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// Membaca status pushbutton
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buttonState = digitalRead(buttonPin);
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// Jika pushbutton ditekan dan lokasi GPS valid, tampilkan dan kirim melalui LoRa
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if (buttonState == LOW) { // LOW berarti tombol ditekan jika menggunakan INPUT_PULLUP
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if (gps.location.isValid()) {
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// Menampilkan lokasi GPS
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Serial.print(F("Location: "));
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Serial.print(gps.location.lat(), 6);
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Serial.print(F(","));
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Serial.println(gps.location.lng(), 6);
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// Mengirim lokasi GPS melalui LoRa dengan tanda pushbutton ditekan
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int snr = getSNR();
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int rssi = getRSSI();
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unsigned long delayValue = calculateDelay();
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SerialAT.print(gps.location.lat(), 6);
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SerialAT.print(",");
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SerialAT.print(gps.location.lng(), 6);
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SerialAT.print(",");
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SerialAT.print("PUSH,");
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SerialAT.print(snr);
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SerialAT.print(",");
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SerialAT.print(rssi);
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SerialAT.print(",");
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SerialAT.println(delayValue);
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// Menampilkan nilai SNR, RSSI, dan Delay
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Serial.print(F("SNR: "));
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Serial.println(snr);
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Serial.print(F("RSSI: "));
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Serial.println(rssi);
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Serial.print(F("Delay: "));
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Serial.println(delayValue);
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} else {
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Serial.println(F("INVALID"));
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}
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}
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delay(500);
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}
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int getSNR() {
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// Nilai SNR dihitung berdasarkan kekuatan sinyal GPS
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// Asumsi: Semakin kuat sinyal GPS, semakin baik SNR-nya
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// Ini hanya contoh sederhana, Anda mungkin memerlukan algoritma yang lebih kompleks
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if (gps.hdop.isValid()) {
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return (int)(100.0 / gps.hdop.hdop()); // Contoh konversi HDOP ke SNR
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} else {
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return -1; // Nilai SNR tidak valid
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}
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}
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int getRSSI() {
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// Nilai RSSI diambil dari kualitas sinyal GPS
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// Asumsi: Semakin rendah HDOP, semakin baik RSSI-nya
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// Ini hanya contoh sederhana, Anda mungkin memerlukan algoritma yang lebih kompleks
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if (gps.hdop.isValid()) {
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return (int)(-50.0 * gps.hdop.hdop()); // Contoh konversi HDOP ke RSSI
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} else {
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return -100; // Nilai RSSI tidak valid
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}
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}
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unsigned long calculateDelay() {
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// Hitung delay berdasarkan waktu antara saat pushbutton ditekan dan saat GPS memberikan data yang valid
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static unsigned long lastPressTime = 0;
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unsigned long currentTime = millis();
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if (buttonState == LOW) {
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if (lastPressTime == 0) {
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lastPressTime = currentTime;
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}
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return currentTime - lastPressTime;
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} else {
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lastPressTime = 0;
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return 0;
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}
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}
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@ -0,0 +1,153 @@
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#include <TinyGPS++.h>
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#include <HardwareSerial.h>
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#include <WiFi.h>
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#include <FirebaseESP32.h>
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#include <NTPClient.h>
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#include <WiFiUdp.h>
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// Informasi Wi-Fi
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const char* ssid = "atfalprm";
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const char* password = "sakarepmuwes";
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// Informasi Firebase
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#define FIREBASE_HOST "tomboldarurat-d4533-default-rtdb.firebaseio.com"
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#define FIREBASE_AUTH "your_firebase_auth_token"
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HardwareSerial SerialAT(2);
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TinyGPSPlus gps;
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const int ledPin = 12;
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const int buzzerPin = 13;
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FirebaseData firebaseData;
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FirebaseConfig firebaseConfig;
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FirebaseAuth firebaseAuth;
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WiFiUDP ntpUDP;
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NTPClient timeClient(ntpUDP, "pool.ntp.org", 25200, 60000); // UTC+7
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const long utcOffsetInSeconds = 25200; // UTC+7 jam (7 * 3600 detik)
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const unsigned long alarmDuration = 30000; // 30 detik
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unsigned long alarmStartTime = 0;
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bool alarmActive = false;
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void setup() {
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Serial.begin(115200);
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SerialAT.begin(9600, SERIAL_8N1, 4, 5);
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pinMode(ledPin, OUTPUT);
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pinMode(buzzerPin, OUTPUT);
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WiFi.begin(ssid, password);
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Serial.print("Menghubungkan ke Wi-Fi");
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println();
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Serial.println("Terhubung ke Wi-Fi");
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firebaseConfig.host = FIREBASE_HOST;
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firebaseConfig.signer.tokens.legacy_token = FIREBASE_AUTH;
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Firebase.begin(&firebaseConfig, &firebaseAuth);
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// Mulai klien NTP
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timeClient.begin();
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timeClient.setTimeOffset(utcOffsetInSeconds); // Setel offset waktu
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// Cek koneksi Firebase
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if (Firebase.ready()) {
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Serial.println("Terhubung ke Firebase");
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} else {
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Serial.println("Gagal terhubung ke Firebase");
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}
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}
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void loop() {
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if (SerialAT.available()) {
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String receivedData = SerialAT.readStringUntil('\n');
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Serial.println("Diterima dari LoRa: " + receivedData);
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int firstCommaIndex = receivedData.indexOf(',');
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int secondCommaIndex = receivedData.indexOf(',', firstCommaIndex + 1);
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int thirdCommaIndex = receivedData.indexOf(',', secondCommaIndex + 1);
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int fourthCommaIndex = receivedData.indexOf(',', thirdCommaIndex + 1);
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int fifthCommaIndex = receivedData.indexOf(',', fourthCommaIndex + 1);
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if (firstCommaIndex != -1 && secondCommaIndex != -1 && thirdCommaIndex != -1 && fourthCommaIndex != -1 && fifthCommaIndex != -1) {
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String lat = receivedData.substring(0, firstCommaIndex);
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String lng = receivedData.substring(firstCommaIndex + 1, secondCommaIndex);
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String pushState = receivedData.substring(secondCommaIndex + 1, thirdCommaIndex);
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String snr = receivedData.substring(thirdCommaIndex + 1, fourthCommaIndex);
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String rssi = receivedData.substring(fourthCommaIndex + 1, fifthCommaIndex);
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String delayValue = receivedData.substring(fifthCommaIndex + 1);
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Serial.print("Latitude: ");
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Serial.print(lat);
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Serial.print(", Longitude: ");
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Serial.println(lng);
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Serial.print("Push State: ");
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Serial.println(pushState);
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Serial.print("SNR: ");
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Serial.println(snr);
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Serial.print("RSSI: ");
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Serial.println(rssi);
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Serial.print("Delay: ");
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Serial.println(delayValue);
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// Mulai alarm
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alarmStartTime = millis();
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alarmActive = true;
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// Sinkronisasi waktu dengan server NTP
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timeClient.update();
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// Mendapatkan waktu saat ini dari klien NTP
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time_t epochTime = timeClient.getEpochTime();
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struct tm * timeinfo;
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timeinfo = localtime(&epochTime);
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char timeStr[20];
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sprintf(timeStr, "%02d-%02d-%04d %02d:%02d:%02d", timeinfo->tm_mday, timeinfo->tm_mon + 1, timeinfo->tm_year + 1900, timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec);
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// Membuat objek JSON untuk mengirim data
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FirebaseJson json;
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json.set("/latitude", lat);
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json.set("/longitude", lng);
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json.set("/time", timeStr);
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json.set("/pushState", pushState);
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json.set("/snr", snr);
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json.set("/rssi", rssi);
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json.set("/delay", delayValue);
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// Mengirim data ke Firebase di path /location dengan kunci unik
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if (Firebase.push(firebaseData, "/location", json)) {
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Serial.println("Data dikirim ke Firebase");
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} else {
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Serial.print("Gagal mengirim data ke Firebase: ");
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Serial.println(firebaseData.errorReason());
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}
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} else {
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Serial.println("Format data tidak benar");
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}
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// Membersihkan buffer masuk
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while (SerialAT.available()) {
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SerialAT.read();
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}
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}
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// Mengatur waktu alarm
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if (alarmActive) {
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if (millis() - alarmStartTime < alarmDuration) {
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digitalWrite(ledPin, HIGH);
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digitalWrite(buzzerPin, HIGH);
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} else {
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digitalWrite(ledPin, LOW);
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digitalWrite(buzzerPin, LOW);
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alarmActive = false;
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}
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}
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delay(500);
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}
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