Embedded Files
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Código Fonte
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <SPI.h>
#include <ESP8266HTTPClient.h>
#include <NTPClient.h>
#ifndef STASSID
#define STASSID ""
#define STAPSK ""
#endif
const char *ssid = STASSID;
const char *password = STAPSK;
uint8_t pin_dht = D3;
const long utcOffsetInSeconds = -3 * 60 * 60;
ESP8266WebServer server(80);
DHT dht(pin_dht, DHT22);
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "south-america.pool.ntp.org", utcOffsetInSeconds);
float minutos = 1;
String getDateTime()
{
unsigned long epochTime = timeClient.getEpochTime();
String time = timeClient.getFormattedTime();
struct tm *ptm = gmtime((time_t *)&epochTime);
int monthDay = ptm->tm_mday;
int currentMonth = ptm->tm_mon + 1;
int currentYear = ptm->tm_year + 1900;
String dateTime = String(monthDay) + "/" + String(currentMonth) + "/" + String(currentYear) + " " + time;
return dateTime;
}
String getTemperature()
{
float t = dht.readTemperature();
float temperature = isnan(t) ? 0 : t;
String temperature_string = String(temperature);
temperature_string.replace(".", ",");
return temperature_string;
}
String getHumidity()
{
float h = dht.readHumidity();
float humidity = isnan(h) ? 0 : h;
String humidity_string = String(humidity);
humidity_string.replace(".", ",");
return humidity_string;
}
String sendData()
{
String temperature = getTemperature();
String humidity = getHumidity();
String dateTime = getDateTime();
String values = "{\"value1\":\"" + temperature + "\",\"value2\":\"" + humidity + "\",\"value3\":\"" + dateTime + "\"}";
HTTPClient http;
http.begin("http://maker.ifttt.com/trigger/dados/with/key/");
http.addHeader("Content-Type", "application/json");
int httpCode = http.POST(values);
String httpReturn = "erro";
if (httpCode > 0)
{
httpReturn = http.getString();
}
return httpReturn;
}
void handleRoot()
{
digitalWrite(LED_BUILTIN, 1);
server.send(200, "text/plain", "hello from esp8266!");
digitalWrite(LED_BUILTIN, 0);
}
void handleNotFound()
{
digitalWrite(LED_BUILTIN, 1);
String message = "File Not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i = 0; i < server.args(); i++)
{
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
digitalWrite(LED_BUILTIN, 0);
}
void temperature()
{
String temperature = getTemperature();
server.send(200, "text/plain", temperature);
}
void humidity()
{
String humidity = getHumidity();
server.send(200, "text/plain", humidity);
}
void data()
{
String temperature = getTemperature();
String humidity = getHumidity();
String htmlPage;
htmlPage += "<html>\r\n";
htmlPage += "<style>\r\n";
htmlPage += " h1 {text-align: center;vertical-align: middle;}\r\n";
htmlPage += "</style>\r\n";
htmlPage += "<style>\r\n";
htmlPage += " h1 {";
htmlPage += " text-align: center";
htmlPage += " }";
htmlPage += " .center {";
htmlPage += " margin: 0;";
htmlPage += " position: absolute;";
htmlPage += " top: 50%;";
htmlPage += " left: 50%;";
htmlPage += " -ms-transform: translate(-50%, -50%);";
htmlPage += " transform: translate(-50%, -50%);";
htmlPage += " }";
htmlPage += "</style>\r\n";
htmlPage += "<head><title>dados</title></head>\r\n";
htmlPage += " <div class='center'>\r\n";
htmlPage += " <h1>Temperatura: " + temperature + "'</h1>\r\n";
htmlPage += " <h1>Umidade: " + humidity + "%</h1>\r\n";
htmlPage += " </div>\r\n";
htmlPage += "</html>";
server.send(200, "text/html", htmlPage);
}
void webhook()
{
String retorno = sendData();
server.send(200, "text/plain", retorno);
}
void setIntervaloMinutos()
{
String message = "";
if (server.arg("minutos") == "")
{
message = "Parâmetro minutos não encontrado";
}
else
{
minutos = server.arg("minutos").toFloat();
if (minutos < 0.5)
{
minutos = 0.5;
}
message = "Minutos = ";
message += minutos;
}
server.send(200, "text/plain", message);
}
void setup(void)
{
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, 0);
Serial.begin(9600);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
Serial.println("");
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
if (MDNS.begin("esp8266"))
{
Serial.println("MDNS responder started");
}
server.on("/", handleRoot);
server.on("/temperature", temperature);
server.on("/humidity", humidity);
server.on("/data", data);
server.on("/webhook", webhook);
server.on("/intervalo", setIntervaloMinutos);
server.onNotFound(handleNotFound);
server.begin();
Serial.println("HTTP server started");
pinMode(pin_dht, INPUT);
dht.begin();
timeClient.begin();
}
unsigned long previousMillis = 0;
void timer()
{
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= minutos * 60 * 1000)
{
previousMillis = currentMillis;
sendData();
}
}
void loop(void)
{
server.handleClient();
MDNS.update();
timeClient.update();
timer();
}
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