การเชื่อมต่ออุปกรณ์เข้ากับ NETPIE สำหรับ CCS811

/* connect to Gas Sensor */
#include "Adafruit_CCS811.h"
Adafruit_CCS811 ccs;

/* connect to wifi */
#include <ESP8266WiFi.h>
const char* ssid     = "NSTDA-Project-7013"; // ssid wifi
const char* password = "1q2w3e4r"; // password wifi
WiFiClient client;

/* connect to netpie */
#include <MicroGear.h>
#define APPID "SmartOfficeAt418B" // APPLICATION (APPID) etc. KMUTNBM2
#define KEY "9LnnyoiXdorYtNn" // device key แต่ในเว็บ netpie ใช้ session key
#define SECRET "ZhGtoPWqueqmtDDrTNRutKcMT"  // *secret device key
#define FEEDID  "418BSensors"  // feed name
#define ALIAS   "Air_Quality_Sensor"
MicroGear microgear(client);

/* Variable */
int timer = 0;
char str[32];

void onMsghandler(char *topic, uint8_t* msg, unsigned int msglen) {
  Serial.print("Incoming message --> ");
  msg[msglen] = '\0';
  Serial.println((char *)msg);
}

void onConnected(char *attribute, uint8_t* msg, unsigned int msglen) {
  Serial.println("Connected to NETPIE...");
  microgear.setAlias(ALIAS);
}

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

  // Initialize Gas Sensor
  if (!ccs.begin()) {
    Serial.println("Failed to start sensor! Please check your wiring.");
    while (1);
  }

  //calibrate temperature sensor
  while (!ccs.available());
  float temp = ccs.calculateTemperature();
  ccs.setTempOffset(temp - 25.0);

  // Initialize microgear
  microgear.on(MESSAGE, onMsghandler);
  microgear.on(CONNECTED, onConnected);     //optional
  microgear.on(ERROR, onConnected);
  microgear.on(INFO, onConnected);

  //Wait for WiFi Establishement
  Serial.println("Starting...");
  if (WiFi.begin(ssid, password)) {
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
  }

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

  microgear.init(KEY, SECRET, ALIAS);
  microgear.connect(APPID);

}

void loop() {
  if (microgear.connected()) {
    Serial.print("*");
    microgear.loop();
    if (timer >= 60000) {

      int CO2;
      int TVOC;
      float temp;

      if (ccs.available()) {
        temp = ccs.calculateTemperature();
        if (!ccs.readData()) {
          Serial.println("CO2: ");
          Serial.print(ccs.geteCO2());
          CO2 = ccs.geteCO2();
          Serial.print("ppm, TVOC: ");
          Serial.print(ccs.getTVOC());
          TVOC = ccs.getTVOC();
          Serial.print("ppb, Temp: ");
          Serial.println(temp);
        }
        else {
          Serial.println("ERROR!");
          while (1);
        }
      }



      //Don't You DARE USE white spaces in the String
      String  data = "{\"Room_CO2\":";
      data += CO2 ;
      data += ",\"Room_TEMP\":";
      data += temp ;
      data += ",\"Room_TVOC\":";
      data += TVOC ;
      data += "}";

      sprintf(str, "%d,%.2f,%d", CO2, temp, TVOC);
      Serial.println(str);
      microgear.publish("/roomquality", str);

      Serial.println((char*) data.c_str());


      Serial.print("Sending --> ");
      microgear.writeFeed(FEEDID, data);    //YOUR  FEED ID, API KEY

      timer = 0;
    }
    else timer += 200;
  } else {
    Serial.println("connection lost, reconnect...");
    if (timer >= 5000) {
      microgear.connect(APPID);
      timer = 0;
    }
    else timer += 200;
  }
  delay(200);
}