Blynk Enviornment Station

/*
Latest version GOOD 09/11/2024
Updated for Blynk 10/11/2024

For VB 6 digits sddddd s=p/h/t d=data
'A = AQI Not used, calculated internally with VB program
'p = PM2.5
'h = HUMIDITY
't = TEMPERATURE
*/
#define BLYNK_TEMPLATE_ID "TMPL6lkSTd5p_"
#define BLYNK_TEMPLATE_NAME "Enviornment"
#define BLYNK_AUTH_TOKEN "***********************"
#define BLYNK_FIRMWARE_VERSION        "1.2.0"

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "***************";  // type your WiFi SSID
char pass[] = "*********";  // type your WiFi password
BlynkTimer timer;

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>
#include <Adafruit_Sensor.h>

#define i2c_Address 0x3c //initialize with the I2C addr 0x3C Typically eBay OLED's

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1   //   QT-PY / XIAO
Adafruit_SH1106G oled = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#include <DHT.h>
#define DHTPIN 23  // pin for Dustation Devkit v1.4
float t;
float h;
float heatindex;

#include "PMS.h"
PMS pms(Serial2);
PMS::DATA data;
float pm2;
float aqidata;

//#define DHTTYPE    DHT11     // DHT 11
#define DHTTYPE      DHT22     // DHT 22 (AM2302)
//#define DHTTYPE    DHT21     // DHT 21 (AM2301)
#define I2C_ADDRESS 0x3C

DHT dht(DHTPIN, DHTTYPE);

void setup() {
   Blynk.connectWiFi(ssid, pass);
   Blynk.begin(auth, ssid, pass, "blynk.cloud",80);
   Blynk.config(auth);
   Blynk.connect();
   timer.setInterval(1000L, send2blynk);

   Serial2.begin(9600);
   dht.begin();
   Wire.begin();
   Wire.setClock(400000L);
   oled.begin(I2C_ADDRESS,true);
   oled.setCursor(0,0); //(col,row)
   oled.clearDisplay();
   oled.display();

   delay(2000);
   oled.clearDisplay();
   oled.setTextSize(1.5);
   oled.setTextColor(SH110X_WHITE);
}

void loop() {
  Blynk.run();

  int AQI;
  String state;

  if (pms.read(data))
  {
    pm2 = data.PM_AE_UG_2_5;

    am2302();

    oledupdate();
    getAQI(pm2, &AQI, &state);

  }
}

  void am2302() {

  //read temperature and humidity
  t = dht.readTemperature();
  h = dht.readHumidity();
  heatindex = dht.computeHeatIndex(t, h, false);
  if (isnan(h) || isnan(t)) {
  }
}

  void oledupdate() {
  delay(1000);
  oled.clearDisplay();

  // display temperature
   oled.setCursor(1,0); //(col,row)
   oled.print(t);
   oled.print("C");

   oled.setCursor(1,12); //(col,row)
   oled.print(h);
   oled.print("%");

   oled.setCursor(1,22); //(col,row)
   oled.print("PM2.5 = ");
   int temppm2 = pm2;
   oled.print(temppm2);
}

void getAQI(float pm25, int* aqi, String* state){
  int aqitemp;
  String statetemp;

  // aqi = Ilow + (C-Clow)*(Ihigh-Ilow)/(Chigh-Clow) with I=aqi and C=concentration
  if(pm25 < 12){
      *aqi = 0 + (pm25-0)*(50.0-0)/(12-0);
      *state = "GOOD";
      aqitemp = *aqi;
      statetemp = *state;
  }else if(pm25 < 35){
      *aqi = 51 + (pm25-13)*(100.0-51)/(35-13);
      *state = "MODERATE";
      aqitemp = *aqi;
      statetemp = *state;
  }else if(pm25 < 55){
      *aqi = 101 + (pm25-36)*(150.0-101)/(55-36);
      *state = "UNHEALTHY SENS";
       aqitemp = *aqi;
       statetemp = *state;
 }else if(pm25 < 150){
      *aqi = 151 + (pm25-56)*(200.0-151)/(150-56);
      *state = "UNHEALTHY";
      aqitemp = *aqi;
      statetemp = *state;
  }else if(pm25 < 250){
      *aqi = 201 + (pm25-151)*(300.0-201)/(250-151);
      *state = "VERY UNHEALTHY";
      aqitemp = *aqi;
      statetemp = *state;
  }else{
      *aqi = 300 + (pm25-250)*(500.0-300)/(500-250);
      *state = "HAZARDOUS";
      aqitemp = *aqi;
      statetemp = *state;
  }
   aqidata=aqitemp;
   oled.setCursor(1,32); //(col,row)
   oled.print("AQI = ");
   oled.print(aqitemp);

   oled.setTextColor(SH110X_BLACK, SH110X_WHITE); // 'inverted' text
   oled.setTextSize(1.7);
   oled.setCursor(1,52);
   oled.print(statetemp);
   oled.display();
   oled.setTextColor(SH110X_WHITE);
   oled.setTextSize(1.5);

   send2pc();
   send2blynk();
}

void send2blynk(){
    Blynk.virtualWrite(V0, t);
    Blynk.virtualWrite(V1, h);
    Blynk.virtualWrite(V2, pm2);
    Blynk.virtualWrite(V3, aqidata);
    Blynk.virtualWrite(V4, heatindex);

}