DustSensor.ino

DustSensor.ino

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP8266WiFi.h>
#include <WiFiHelper.h>
#include <CMDust.h>
const char* ssid = "";
const char* pass = "";

int pinDust = 14;
float concentrations = 0;

Dust *dust;
WiFiHelper *wifi;
LiquidCrystal_I2C lcd(0x21, 16, 2);

void init_wifi()
{
  wifi = new WiFiHelper(ssid, pass);
  wifi->on_connected([](const char* message)
  {
    Serial.println (message);
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
  });
  wifi->on_disconnected([](const char* message)
  {
    Serial.println (message);
  });
  wifi->begin();
}

void init_hardware()
{
  Serial.begin(115200);
  delay(10);
  Serial.println();
  Serial.println();
}

void setup()
{
  lcd.begin();
  lcd.backlight();
  init_hardware();
  init_wifi();
  pinMode(pinDust, INPUT);
  lcd.setCursor(4, 0);
  lcd.print("Dust Now");
  lcd.setCursor(1, 1);
  lcd.print("Dust : ");
  lcd.setCursor(8, 1);
  lcd.print("0.00 ");
  dust = new Dust(pinDust, 30000);
}

void loop()
{
  wifi->loop();
  concentrations = dust->read_dust();

  lcd.setCursor(8, 1);
  lcd.print(concentrations);
  uploadThingsSpeak(concentrations);
}

void uploadThingsSpeak(float d) {
  static const char* host = "api.thingspeak.com";
  static const char* apiKey = "API KEY";

  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    DEBUG_PRINTLN("connection failed");
    return;
  }
  String url = "/update/";
  // url += streamId;
  url += "?key=";
  url += apiKey;
  url += "&field1=";
  url += d;

  Serial.print("Requesting URL: ");
  Serial.println(url);

  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Connection: close\r\n\r\n");
}