#include #include #include // Including the DHT library #include "DHT.h" const char *ssid = "TP8"; const char *password = "tzspot123"; ESP8266WebServer server(80); float h; float t; #define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321 // DHT Sensor const int DHTPin = D4; // Initialize DHT sensor. DHT dht(DHTPin, DHTTYPE); boolean ledState = false; void handleRoot() { Serial.println("Handle root"); h = dht.readHumidity(); Serial.println("humidity read"); Serial.println(h); // Read temperature as Celsius (the default) t = dht.readTemperature(); Serial.println("temperature read"); Serial.println(t); if (isnan(h) || isnan(t)) { server.send(500, "text/html", "

Failed to read from DHT sensor!

"); } else { int sec = millis() / 1000; int min = sec / 60; int hr = min / 60; char uptime[9]; snprintf(uptime, 9, "%02d:%02d:%02d", hr, min % 60, sec % 60); String temp ="\ \ \ \ ESP8266 Demo\ \ \ \

Node MCU Sensor Data

Uptime: " + String(uptime) + "

\ \ \ \ \ \ \ \

field	value
Chip ID	" + String(ESP.getChipId()) + "
VCC	" + String(ESP.getVcc()) + "V
Humidity	" + String(h) + "%
Temperature	" + String(t) + "°C
Built in LED state	" + ((ledState) ? "on" : "off") + "

\ \ "; server.send(200, "text/html", temp); } } void handleOn() { digitalWrite(BUILTIN_LED, LOW); ledState = true; server.sendHeader("Location", "/", true); server.send ( 302, "text/plain", ""); } void handleOff() { digitalWrite(BUILTIN_LED, HIGH); ledState = false; server.sendHeader("Location", "/", true); server.send ( 302, "text/plain", ""); } /**********************************************/ /* WiFi connecting script /**********************************************/ void connectWifi() { WiFi.begin(ssid, password); // Start WiFI Serial.print("Connecting "); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println("WiFi connected"); Serial.print("IP address: "); Serial.println(WiFi.localIP()); dht.begin(); } void initServer() { server.on("/", handleRoot); server.on("/on", handleOn); server.on("/off", handleOff); server.begin(); Serial.println("HTTP server initialized"); } void setup() { Serial.begin(9600); //Output to Serial at 9600 baud connectWifi(); // Start ConnecWifi Serial.print("\n"); Serial.println("ChipId: "); Serial.println(ESP.getChipId()); initServer(); pinMode(BUILTIN_LED, OUTPUT); digitalWrite(BUILTIN_LED, HIGH); } void loop() { server.handleClient(); }