/********* Rui Santos Complete project details at https://RandomNerdTutorials.com/esp8266-nodemcu-bme680-sensor-arduino/ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. *********/ #include //#include #include #include "Adafruit_BME680.h" #include #include "ESPAsyncWebServer.h" // Replace with your network credentials const char* ssid = "Inserisci il nole della tua rete (SSID)"; const char* password = "Inserisci la password per la tua rete WiFi"; //Uncomment if using SPI /*#define BME_SCK 14 #define BME_MISO 12 #define BME_MOSI 13 #define BME_CS 15*/ Adafruit_BME680 bme; // I2C //Adafruit_BME680 bme(BME_CS); // hardware SPI //Adafruit_BME680 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK); float temperature; float humidity; float pressure; float gasResistance; AsyncWebServer server(80); AsyncEventSource events("/events"); unsigned long lastTime = 0; unsigned long timerDelay = 30000; // send readings timer void getBME680Readings(){ // Tell BME680 to begin measurement. unsigned long endTime = bme.beginReading(); if (endTime == 0) { Serial.println(F("Failed to begin reading :(")); return; } if (!bme.endReading()) { Serial.println(F("Failed to complete reading :(")); return; } temperature = bme.temperature; pressure = bme.pressure / 100.0; humidity = bme.humidity; gasResistance = bme.gas_resistance / 1000.0; } String processor(const String& var){ getBME680Readings(); //Serial.println(var); if(var == "TEMPERATURE"){ return String(temperature); } else if(var == "HUMIDITY"){ return String(humidity); } else if(var == "PRESSURE"){ return String(pressure); } else if(var == "GAS"){ return String(gasResistance); } return String(); } const char index_html[] PROGMEM = R"rawliteral( BME680 Web Server

BME680 WEB SERVER

TEMPERATURE

%TEMPERATURE% °C

HUMIDITY

%HUMIDITY% %

PRESSURE

%PRESSURE% hPa

GAS

%GAS% KΩ

)rawliteral"; void setup() { Serial.begin(115200); Serial.flush(); Wire.pins(0, 2); Wire.begin(0, 2); // Set the device as a Station and Soft Access Point simultaneously WiFi.mode(WIFI_AP_STA); // Set device as a Wi-Fi Station WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(1000); Serial.println("Setting as a Wi-Fi Station.."); } Serial.print("Station IP Address: "); Serial.println(WiFi.localIP()); Serial.println(); // Init BME680 sensor if (!bme.begin()) { Serial.println(F("Could not find a valid BME680 sensor, check wiring!")); while (1); } // Set up oversampling and filter initialization bme.setTemperatureOversampling(BME680_OS_8X); bme.setHumidityOversampling(BME680_OS_2X); bme.setPressureOversampling(BME680_OS_4X); bme.setIIRFilterSize(BME680_FILTER_SIZE_3); bme.setGasHeater(320, 150); // 320*C for 150 ms // Handle Web Server server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){ request->send_P(200, "text/html", index_html, processor); }); // Handle Web Server Events events.onConnect([](AsyncEventSourceClient *client){ if(client->lastId()){ Serial.printf("Client reconnected! Last message ID that it got is: %u\n", client->lastId()); } // send event with message "hello!", id current millis // and set reconnect delay to 1 second client->send("hello!", NULL, millis(), 10000); }); server.addHandler(&events); server.begin(); } void loop() { if ((millis() - lastTime) > timerDelay) { getBME680Readings(); Serial.printf("Temperature = %.2f ºC \n", temperature); Serial.printf("Humidity = %.2f % \n", humidity); Serial.printf("Pressure = %.2f hPa \n", pressure); Serial.printf("Gas Resistance = %.2f KOhm \n", gasResistance); Serial.println(); // Send Events to the Web Server with the Sensor Readings events.send("ping",NULL,millis()); events.send(String(temperature).c_str(),"temperature",millis()); events.send(String(humidity).c_str(),"humidity",millis()); events.send(String(pressure).c_str(),"pressure",millis()); events.send(String(gasResistance).c_str(),"gas",millis()); lastTime = millis(); } }