gas01.cpp

gistfile1.txt

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include "DHT.h"

const char* ssid     = "mywifi";
const char* password = "mysecret";

const char* host = "192.168.0.102";

DHT dht;

void setup() {
  Serial.begin(115200);
  delay(10);

  pinMode(A0, INPUT);

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  /* Explicitly set the ESP8266 to be a WiFi-client, otherwise, it by default,
     would try to act as both a client and an access-point and could cause
     network-issues with your other WiFi-devices on your WiFi-network. */
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  dht.setup(4);
}

int value = 0;

void loop() {
  delay(dht.getMinimumSamplingPeriod());

  float humidity = dht.getHumidity();
  float temperature = dht.getTemperature();
  int gas = analogRead(A0);

  Serial.print(dht.getStatusString());
  Serial.print("\t");
  Serial.print(humidity, 1);
  Serial.print("\t\t");
  Serial.print(temperature, 1);
  Serial.print("\t\t");
  Serial.println(gas, 1);

  String payload("{\"humidity:\":" + String(humidity)
    + ",\"temperature\":" + temperature + ",\"gas\":" + gas + "}");

  delay(1000);
  return;

  delay(5000);
  ++value;


  Serial.print("connecting to ");
  Serial.println(host);

  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 10080;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }

  // We now create a URI for the request

  Serial.print("Requesting URL: /");

  // This will send the request to the server
  client.print(String("POST / HTTP/1.0\r\n") +
               "Host: " + host + "\r\n" +
               "Content-Type: application/json\r\n" +
               "Content-Length: " + payload.length() + "\r\n" +
               "Connection: close\r\n\r\n");
  client.print(payload);
  unsigned long timeout = millis();
  while (client.available() == 0) {
    if (millis() - timeout > 5000) {
      Serial.println(">>> Client Timeout !");
      client.stop();
      return;
    }
  }

  // Read all the lines of the reply from server and print them to Serial
  while (client.available()) {
    String line = client.readStringUntil('\r');
    Serial.print(line);
  }

  Serial.println();
  Serial.println("closing connection");
}