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- #include <ESP8266WiFi.h>
- const char* ssid = "XXXXXXXXX";
- const char* password = "YYYYYYYYYYY";
- int ledPin = 5; // GPIO13
- WiFiServer server(80);
- #include "DHT.h"
- #define DHTPIN 14 // what digital pin we're connected to
- #define DHTTYPE DHT11 // DHT 11
- DHT dht(DHTPIN, DHTTYPE);
- void setup() {
- Serial.begin(115200);
- delay(10);
- pinMode(ledPin, OUTPUT);
- digitalWrite(ledPin, LOW);
- Serial.println("DHTxx test!");
- dht.begin();
- // Connect to WiFi network
- Serial.println();
- Serial.println();
- Serial.print("Connecting to ");
- Serial.println(ssid);
- WiFi.begin(ssid, password);
- while (WiFi.status() != WL_CONNECTED) {
- delay(500);
- Serial.print(".");
- }
- Serial.println("");
- Serial.println("WiFi connected");
- // Start the server
- server.begin();
- Serial.println("Server started");
- // Print the IP address
- Serial.print("Use this URL to connect: ");
- Serial.print("http://");
- Serial.print(WiFi.localIP());
- Serial.println("/");
- }
- void loop() {
- // Check if a client has connected
- WiFiClient client = server.available();
- if (!client) {
- return;
- }
- // Wait until the client sends some data
- Serial.println("new client");
- while(!client.available()){
- delay(1);
- }
- // Read the first line of the request
- String request = client.readStringUntil('\r');
- Serial.println(request);
- client.flush();
- // Match the request
- int value = LOW;
- if (request.indexOf("/LED=ON") != -1) {
- digitalWrite(ledPin, HIGH);
- value = HIGH;
- }
- if (request.indexOf("/LED=OFF") != -1) {
- digitalWrite(ledPin, LOW);
- value = LOW;
- }
- // Set ledPin according to the request
- //digitalWrite(ledPin, value);
- // Return the response
- client.println("HTTP/1.1 200 OK");
- client.println("Content-Type: text/html");
- client.println(""); // do not forget this one
- client.println("<!DOCTYPE HTML>");
- client.println("<html>");
- client.print("Led pin is now: ");
- if(value == HIGH) {
- client.print("On");
- } else {
- client.print("Off");
- }
- client.println("<br><br>");
- client.println(getMeasurement());
- client.println("<br><br>");
- client.println("<a href=\"/LED=ON\"\"><button>Turn On </button></a>");
- client.println("<a href=\"/LED=OFF\"\"><button>Turn Off </button></a><br />");
- client.println("</html>");
- delay(1);
- Serial.println("Client disonnected");
- Serial.println("");
- }
- String getMeasurement()
- {
- delay(100);
- // Reading temperature or humidity takes about 250 milliseconds!
- // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
- float h = dht.readHumidity();
- // Read temperature as Celsius (the default)
- float t = dht.readTemperature();
- // Read temperature as Fahrenheit (isFahrenheit = true)
- float f = dht.readTemperature(true);
- // Check if any reads failed and exit early (to try again).
- if (isnan(h) || isnan(t) || isnan(f)) {
- Serial.println("Failed to read from DHT sensor!");
- return "Failed to read from DHT sensor!";
- }
- // Compute heat index in Fahrenheit (the default)
- float hif = dht.computeHeatIndex(f, h);
- // Compute heat index in Celsius (isFahreheit = false)
- float hic = dht.computeHeatIndex(t, h, false);
- String resultString =
- ("Humidity: ")
- + String(h)
- + (" %\t")
- + ("Temperature: ")
- + String(t)
- + (" *C ")
- + String(f)
- + (" *F\t")
- + ("Heat index: ")
- + String(hic)
- + (" *C ")
- + String(hif)
- + (" *F");
- return resultString;
- }
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