commit a2cc4eade5570ea21c24e86e70ceb467cd1cb2bc Author: Domagoj Zecevic Date: Sat Feb 25 19:30:38 2023 +0100 first commit diff --git a/beedroom temp/beedroom temp.ino b/beedroom temp/beedroom temp.ino new file mode 100644 index 0000000..7ac826d --- /dev/null +++ b/beedroom temp/beedroom temp.ino @@ -0,0 +1,142 @@ +#include +#include +#include + +// WiFi Info +const char* ssid = "IoT-Zecevic"; +const char* password = "IoTSifra123456!"; + +//MQTT data +const char* mqttServer = "192.168.1.11"; +const int mqttPort = 1883; +const char* mqttUser = "yourMQTTuser"; +const char* mqttPassword = "yourMQTTpassword"; +WiFiClient espClient; +PubSubClient MQTTclient(espClient); + +// DHT setup +#define DHTPIN 2 +#define DHTTYPE DHT11 +DHT dht(DHTPIN, DHTTYPE); + +// Global Vars +float global_temp; +float global_hym; +//update +long previousMillis = 0; +long interval = 60000; //ms + +//Start web server +WiFiServer server(80); + +void initWiFi() { + WiFi.mode(WIFI_STA); + WiFi.begin(ssid, password); + Serial.print("Connecting to WiFi .."); + while (WiFi.status() != WL_CONNECTED) { + Serial.print('.'); + delay(1000); + } + Serial.println(WiFi.localIP()); +} + +void reconect() { + while (MQTTclient.connect("ESP32Client", mqttUser, mqttPassword )) { + Serial.println("Connecting to MQTT..."); + } +} + +// prepare a web page to be send to a client (web browser) +String prepareHtmlPage() +{ + String htmlPage; + htmlPage.reserve(1024); // prevent ram fragmentation + htmlPage = F("HTTP/1.1 200 OK\r\n" + "Content-Type: text/html\r\n" + "Connection: close\r\n" // the connection will be closed after completion of the response + "Refresh: 5\r\n" // refresh the page automatically every 5 sec + "\r\n" + "" + ""); + htmlPage += F("

" + "

Temperature: "); + htmlPage += global_temp; + htmlPage += F("

" + "

Humidity: "); + htmlPage += global_hym; + + htmlPage += F("" + "\r\n"); + return htmlPage; +} + +void setup() { + Serial.begin(115200); + initWiFi(); + dht.begin(); // Start DHT + + server.begin(); + Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str()); + + //connect to MQTT + MQTTclient.setServer(mqttServer, mqttPort); + //MQTTclient.setCallback(callback); + + while (!MQTTclient.connected()) { + + if (MQTTclient.connect("ESP32Client", mqttUser, mqttPassword )) { + Serial.println("Connected to mqtt!"); + } else { + Serial.print("failed with state "); + Serial.print(MQTTclient.state()); + delay(2000); + } + } +} + +void loop() { + global_temp = dht.readTemperature(); + global_hym = dht.readHumidity(); + + Serial.print("Temperatrure: "); + Serial.println(global_temp); + Serial.print("Humidity: "); + Serial.println(global_hym); + + unsigned long currentMillis = millis(); + if(currentMillis - previousMillis > interval) { + previousMillis = currentMillis; + if (!MQTTclient.connected()) { + WiFi.reconnect(); + reconect(); + } + MQTTclient.publish("my/BedRoom/Temperature", String(global_temp).c_str()); + MQTTclient.publish("my/BedRoom/Humidity", String(global_hym).c_str()); + } + + WiFiClient serverClient = server.available(); + if (serverClient) + { + while (serverClient.connected()) + { + // read line by line what the client (web browser) is requesting + if (serverClient.available()) + { + String line = serverClient.readStringUntil('\r'); + if (line.length() == 1 && line[0] == '\n') + { + serverClient.println(prepareHtmlPage()); + break; + } + } + } + + while (serverClient.available()) { + serverClient.read(); + } + // close the connection: + serverClient.stop(); + } + + delay(2000); +}