lithiumhead/DHT22_Webserver.ino

## DHT22_Webserver.ino
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include "DHT.h"

// Uncomment one of the lines below for whatever DHT sensor type you're using!
//#define DHTTYPE DHT11   // DHT 11
//#define DHTTYPE DHT21   // DHT 21 (AM2301)
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

MDNSResponder mdns;

// Replace with your network details
const char* ssid = "Temperature_Server";
const char* password = "vishaworld.com";

ESP8266WebServer server(80);

String webPage = "";

// DHT Sensor
const int DHTPin = 4;
DHT dht(DHTPin, DHTTYPE);
static char celsiusTemp[7];
static char fahrenheitTemp[7];
static char humidityTemp[7];
float h,t,f;

void setup(void) {
  IPAddress Ip(10, 10, 10, 10);
  IPAddress NMask(255, 255, 255, 0);
  WiFi.mode(WIFI_AP);
  WiFi.softAPConfig(Ip, Ip, NMask);
  WiFi.softAP(ssid, password);

  delay(1000);
  Serial.begin(9600);
  Serial.println("");

  // Wait for connection
  delay(5000);
  Serial.println("");
  Serial.print("SoftAP IP address: ");
  Serial.println(WiFi.localIP());

  dht.begin();

  if (mdns.begin("esp8266", WiFi.localIP())) {
    Serial.println("MDNS responder started");
  }

  server.on("/", []() {
    webPage = "";
    webPage += "<!DOCTYPE HTML>";
    webPage += "<html>";
    webPage += "<head></head><body><h1>ESP8266 - Temperature and Humidity</h1><h3>Temperature in Celsius: ";
    webPage += celsiusTemp;
    webPage += "*C</h3><h3>Temperature in Fahrenheit: ";
    webPage += fahrenheitTemp;
    webPage += "*F</h3><h3>Humidity: ";
    webPage += humidityTemp;
    webPage += "%</h3><h3>";
    webPage += "</body></html>";
    server.send(200, "text/html", webPage);
  });

  server.begin();
  Serial.println("HTTP server started");
}

void loop(void) {
  server.handleClient();
  // 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!");
    strcpy(celsiusTemp, "Failed");
    strcpy(fahrenheitTemp, "Failed");
    strcpy(humidityTemp, "Failed");
  }
  else {
    // Computes temperature values in Celsius + Fahrenheit and Humidity
    float hic = dht.computeHeatIndex(t, h, false);
    dtostrf(hic, 6, 2, celsiusTemp);
    float hif = dht.computeHeatIndex(f, h);
    dtostrf(hif, 6, 2, fahrenheitTemp);
    dtostrf(h, 6, 2, humidityTemp);
  }
  delay(2000);
}
	#include <ESP8266WiFi.h>
	#include <WiFiClient.h>
	#include <ESP8266WebServer.h>
	#include <ESP8266mDNS.h>
	#include "DHT.h"

	// Uncomment one of the lines below for whatever DHT sensor type you're using!
	//#define DHTTYPE DHT11 // DHT 11
	//#define DHTTYPE DHT21 // DHT 21 (AM2301)
	#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321

	MDNSResponder mdns;

	// Replace with your network details
	const char* ssid = "Temperature_Server";
	const char* password = "vishaworld.com";

	ESP8266WebServer server(80);

	String webPage = "";

	// DHT Sensor
	const int DHTPin = 4;
	DHT dht(DHTPin, DHTTYPE);
	static char celsiusTemp[7];
	static char fahrenheitTemp[7];
	static char humidityTemp[7];
	float h,t,f;

	void setup(void) {
	IPAddress Ip(10, 10, 10, 10);
	IPAddress NMask(255, 255, 255, 0);
	WiFi.mode(WIFI_AP);
	WiFi.softAPConfig(Ip, Ip, NMask);
	WiFi.softAP(ssid, password);

	delay(1000);
	Serial.begin(9600);
	Serial.println("");

	// Wait for connection
	delay(5000);
	Serial.println("");
	Serial.print("SoftAP IP address: ");
	Serial.println(WiFi.localIP());

	dht.begin();

	if (mdns.begin("esp8266", WiFi.localIP())) {
	Serial.println("MDNS responder started");
	}

	server.on("/", []() {
	webPage = "";
	webPage += "<!DOCTYPE HTML>";
	webPage += "<html>";
	webPage += "<head></head><body><h1>ESP8266 - Temperature and Humidity</h1><h3>Temperature in Celsius: ";
	webPage += celsiusTemp;
	webPage += "*C</h3><h3>Temperature in Fahrenheit: ";
	webPage += fahrenheitTemp;
	webPage += "*F</h3><h3>Humidity: ";
	webPage += humidityTemp;
	webPage += "%</h3><h3>";
	webPage += "</body></html>";
	server.send(200, "text/html", webPage);
	});

	server.begin();
	Serial.println("HTTP server started");
	}

	void loop(void) {
	server.handleClient();
	// 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!");
	strcpy(celsiusTemp, "Failed");
	strcpy(fahrenheitTemp, "Failed");
	strcpy(humidityTemp, "Failed");
	}
	else {
	// Computes temperature values in Celsius + Fahrenheit and Humidity
	float hic = dht.computeHeatIndex(t, h, false);
	dtostrf(hic, 6, 2, celsiusTemp);
	float hif = dht.computeHeatIndex(f, h);
	dtostrf(hif, 6, 2, fahrenheitTemp);
	dtostrf(h, 6, 2, humidityTemp);
	}
	delay(2000);
	}