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- #include "DHT.h"
- #include "SPI.h"
- #include "Ethernet.h"
- #define DHTPIN A1 // pino que estamos conectado
- #define DHTTYPE DHT11 // DHT 11
- DHT dht(DHTPIN, DHTTYPE);
- //Definicoes de IP, mascara de rede e gateway
- byte mac[] = {
- 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
- IPAddress ip(172,25,124,15); //Define o endereco IP
- IPAddress gateway(172,25,124,254); //Define o gateway
- IPAddress subnet(255, 255, 255, 0); //Define a máscara de rede
- //Inicializa o servidor web na porta 80
- EthernetServer server(80);
- void setup()
- {
- Serial.begin(9600);
- dht.begin();
- //Inicializa a interface de rede
- Ethernet.begin(mac, ip, gateway, subnet);
- server.begin();
- }
- void loop()
- {
- // A leitura da temperatura e umidade pode levar 250ms!
- // O atraso do sensor pode chegar a 2 segundos.
- float h = dht.readHumidity();
- float t = dht.readTemperature();
- EthernetClient client = server.available();
- if (client) {
- Serial.println("new client");
- // an http request ends with a blank line
- boolean currentLineIsBlank = true;
- while (client.connected()) {
- if (client.available()) {
- char c = client.read();
- Serial.write(c);
- if (c == 'n' && currentLineIsBlank) {
- client.println("HTTP/1.1 200 OK");
- client.println("Content-Type: text/html");
- client.println("Connection: close");
- client.println("Refresh: 5"); //Recarrega a pagina a cada 2seg
- client.println();
- client.println("<!DOCTYPE HTML>");
- client.println("<html>");
- client.print("Umidade: ");
- client.print("<b>");
- client.print(h);
- client.print("</b>");
- client.print("<br/>");
- client.print("Temperatura: ");
- client.print("<b>");
- client.print(t);
- client.print("</b>");
- client.println("</html>");
- break;
- }
- if (c == 'n') {
- // you're starting a new line
- currentLineIsBlank = true;
- }
- else if (c != 'r') {
- // you've gotten a character on the current line
- currentLineIsBlank = false;
- }
- }
- }
- // give the web browser time to receive the data
- delay(1);
- // close the connection:
- client.stop();
- }
- }
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