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#include <WiFiManager.h>
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#include <FirebaseESP32.h>
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#include <WiFi.h>
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#include <WebServer.h>
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const int flameSensorPin = 34;
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const int smokeDetectionPin = 4; // Smoke detection pin (used for smoke detection)
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const int buzzerPin = 27;
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const int greenLEDPin = 25;
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const int blueLEDPin = 26;
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const int redLEDPin = 33;
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#define IGNORE_TIME 200UL //ignore 2000ms at start
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#define ACTIVE_TIME 200UL //input 2000ms before
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#define FIREBASE_HOST "projecttugasakhir-6d39f-default-rtdb.firebaseio.com"
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#define FIREBASE_AUTH "AIzaSyA2_Bc6_LAVn9UENlx8IRa_Ne6j9b_HCLI"
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FirebaseData firebaseData;
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WebServer server(80);
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int flameThreshold = 400;
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unsigned long wifiConnectedTime = 0;
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volatile uint32_t lastTime = 0;
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volatile uint32_t firstTime = 0;
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volatile bool inputActive = false;
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volatile bool prevInput = false;
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unsigned long previousBuzzerMillis = 0;
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const long buzzerInterval = 500; // Interval for buzzer sound
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unsigned long previousLEDMillis = 0;
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const long ledInterval = 500; // Interval for LED blink
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bool ledState = false;
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String getESPSerial();
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void updateFirebase(int flameValue, String flameStatus, bool smokeDetected);
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void setLEDs(int ledColor);
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void handleRoot();
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void handleSetThreshold();
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void updateClientIP();
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void blinkLED(int ledColor);
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void blink(int pin, int duration, int repetitions);
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void soundBuzzer(int repetitions);
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String clientIP = "";
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void ICACHE_RAM_ATTR INTERRUPT_handler() {
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//debounce
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if ((millis() - lastTime) < 50) {
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return;
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}
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if (((millis() - firstTime) > IGNORE_TIME)) {
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if (digitalRead(smokeDetectionPin) == HIGH) { // Change condition to HIGH for smoke detection
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lastTime = millis();
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if (!inputActive) inputActive = true;
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}
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}
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}
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void InputRoutine() {
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//reset if timeout
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if (inputActive) {
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if ((millis() - lastTime) > ACTIVE_TIME) {
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lastTime = millis();
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inputActive = false;
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}
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}
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}
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void SetupInput() {
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pinMode(smokeDetectionPin, INPUT_PULLUP); // Smoke detection pin as input with pull-up resistor
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firstTime = millis();
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attachInterrupt(digitalPinToInterrupt(smokeDetectionPin), INTERRUPT_handler, RISING);
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}
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void setup() {
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Serial.begin(9600);
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WiFiManager wifiManager;
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WiFi.softAPConfig(IPAddress(192, 168, 1, 1), IPAddress(192, 168, 1, 1), IPAddress(255, 255, 255, 0));
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wifiManager.autoConnect("ESP32_alat2");
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if (WiFi.status() == WL_CONNECTED) {
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Serial.println("Connected to WiFi");
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wifiConnectedTime = millis();
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} else {
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Serial.println("Failed to connect to WiFi");
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}
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Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
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pinMode(buzzerPin, OUTPUT);
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pinMode(greenLEDPin, OUTPUT);
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pinMode(blueLEDPin, OUTPUT);
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pinMode(redLEDPin, OUTPUT); // Ensure the red LED pin is configured as output
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pinMode(smokeDetectionPin, INPUT_PULLUP); // Set pin as input with pull-up resistor
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digitalWrite(buzzerPin, HIGH);
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delay(500);
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digitalWrite(buzzerPin, LOW);
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server.on("/", handleRoot);
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server.on("/setThreshold", handleSetThreshold);
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server.begin();
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Serial.println("Web server started");
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setLEDs(flameThreshold);
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SetupInput(); // Call SetupInput() to configure the input pin for smoke detection
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// Update client IP in Firebase
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updateClientIP();
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}
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bool buzzerActive = false; // Flag to keep track of buzzer state when smoke is detected
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void loop() {
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server.handleClient();
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unsigned long currentMillis = millis();
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int flameValue = analogRead(flameSensorPin);
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Serial.print("Flame Value: ");
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Serial.println(flameValue);
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String flameStatus = (flameValue < flameThreshold) ? "2" : "1";
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// Check smoke detection pin
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if (prevInput != inputActive) {
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prevInput = inputActive;
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if (inputActive) {
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Serial.println("Ada Asap");
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buzzerActive = true; // Activate buzzer when smoke is detected
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} else {
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Serial.println("Tidak Ada Asap");
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buzzerActive = false; // Deactivate buzzer when smoke is no longer detected
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digitalWrite(buzzerPin, LOW); // Ensure buzzer is off
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}
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}
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InputRoutine(); // Call InputRoutine() to handle smoke detection
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if (flameStatus == "2") { // Buzzer active only if fire is detected
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if (currentMillis - previousBuzzerMillis >= buzzerInterval) {
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previousBuzzerMillis = currentMillis;
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soundBuzzer(5); // Sound buzzer 5 times when fire is detected
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}
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if (currentMillis - previousLEDMillis >= ledInterval) {
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previousLEDMillis = currentMillis;
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ledState = !ledState;
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if (ledState) {
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setLEDs(flameThreshold); // Turn on the appropriate LED
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} else {
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setLEDs(0); // Turn off all LEDs
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}
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}
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} else if (!inputActive) { // Ensure buzzer is off when no fire is detected and no smoke is detected
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digitalWrite(buzzerPin, LOW); // Ensure buzzer is off
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setLEDs(flameThreshold); // Kembalikan LED ke status semula
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}
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// Sound buzzer continuously in loop if smoke is detected
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if (buzzerActive && inputActive) {
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soundBuzzer(5); // Keep sounding buzzer until smoke is no longer detected
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}
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// Update client IP before updating sensor data
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updateClientIP();
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updateFirebase(flameValue, flameStatus, inputActive); // Call updateFirebase() with smoke detection status
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delay(10); // Reduced delay to allow more frequent checking
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}
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void handleRoot() {
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String html = "<html><body>"
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"<h1>ESP32 Sensor Configuration</h1>"
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"<form action=\"/setThreshold\" method=\"POST\">"
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"Flame Threshold: "
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"<select name=\"threshold\">"
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"<option value=\"400\" " + String(flameThreshold == 400 ? "selected" : "") + ">Mode 1 (400)</option>"
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"<option value=\"700\" " + String(flameThreshold == 700 ? "selected" : "") + ">Mode 2 (700)</option>"
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"<option value=\"1000\" " + String(flameThreshold == 1000 ? "selected" : "") + ">Mode 3 (1000)</option>"
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"</select><br>"
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"<input type=\"submit\" value=\"Set Threshold\">"
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"</form>"
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"</body></html>";
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server.send(200, "text/html", html);
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}
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void handleSetThreshold() {
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if (server.hasArg("threshold")) {
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flameThreshold = server.arg("threshold").toInt();
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Serial.println("New Flame Threshold: " + String(flameThreshold));
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setLEDs(flameThreshold);
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digitalWrite(buzzerPin, HIGH);
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delay(500);
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digitalWrite(buzzerPin, LOW);
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}
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server.sendHeader("Location", "/");
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server.send(303);
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}
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void updateClientIP() {
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// Get the current IP address from WiFi
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clientIP = WiFi.localIP().toString();
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Serial.println("Client IP: " + clientIP);
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}
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void updateFirebase(int flameValue, String flameStatus, bool smokeDetected) {
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FirebaseJson json;
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json.set("espSerial", getESPSerial());
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json.set("nomorRumah", "A02");
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json.set("flameValue", flameValue);
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json.set("flameStatus", flameStatus);
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json.set("smokeDetected", smokeDetected ? "2" : "1"); // Convert smoke detection status to string "2" or "1"
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json.set("clientIP", clientIP); // Add clientIP to JSON
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// Non-blocking call to update Firebase
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if (Firebase.updateNode(firebaseData, "/sensorData2", json)) {
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Serial.println("Data successfully updated to Firebase!");
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} else {
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Serial.println("Failed to update data to Firebase.");
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Serial.println("Reason: " + firebaseData.errorReason());
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}
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}
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String getESPSerial() {
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uint64_t chipid = ESP.getEfuseMac();
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return String(chipid, HEX);
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}
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void setLEDs(int ledColor) {
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switch (ledColor) {
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case 400:
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digitalWrite(greenLEDPin, HIGH);
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digitalWrite(blueLEDPin, LOW);
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digitalWrite(redLEDPin, LOW);
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break;
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case 700:
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digitalWrite(greenLEDPin, LOW);
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digitalWrite(blueLEDPin, HIGH);
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digitalWrite(redLEDPin, LOW);
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break;
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case 1000:
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digitalWrite(greenLEDPin, LOW);
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digitalWrite(blueLEDPin, LOW);
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digitalWrite(redLEDPin, HIGH);
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break;
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default:
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digitalWrite(greenLEDPin, LOW);
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digitalWrite(blueLEDPin, LOW);
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digitalWrite(redLEDPin, LOW);
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break;
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}
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}
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void blinkLED(int ledColor) {
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switch (ledColor) {
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case 400:
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blink(greenLEDPin, 1000, 5); // Kedipkan LED hijau 3 kali dengan interval 500ms
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break;
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case 700:
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blink(blueLEDPin, 1000, 5); // Kedipkan LED biru 3 kali dengan interval 500ms
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break;
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case 1000:
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blink(redLEDPin, 1000, 5); // Kedipkan LED merah 3 kali dengan interval 500ms
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break;
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default:
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break;
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}
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}
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void blink(int pin, int duration, int repetitions) {
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for (int i = 0; i < repetitions; i++) {
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digitalWrite(pin, HIGH);
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delay(duration);
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digitalWrite(pin, LOW);
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delay(duration);
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}
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}
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// Function to sound the buzzer for a specified number of repetitions
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void soundBuzzer(int repetitions) {
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for (int i = 0; i < repetitions; i++) {
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digitalWrite(buzzerPin, HIGH);
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delay(100); // Reduced sound duration
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digitalWrite(buzzerPin, LOW);
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delay(100); // Reduced silence duration
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}
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}
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