#define BLYNK_TEMPLATE_ID "TMPL63FXSHo9J"
#define BLYNK_TEMPLATE_NAME "Project"
#define BLYNK_AUTH_TOKEN "uZrUVotdoC_tIUu8zqz56j-ATKg2JOTQ"
#define BLYNK_PRINT Serial
#include<WiFi.h>
#include<WiFiClient.h>
#include<BlynkSimpleEsp32.h>
#include <DHTesp.h>
#define BlynkTerminal V4
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);  
int lcd_SDA = 2;
int lcd_SCL = 15;

#define blueled 4
#define redled 5
#define dhtpin 21
BlynkTimer timer;
DHTesp sensor;
WidgetTerminal terminal(V4);

char ssid[]="Wokwi-GUEST";
char pass[]="";
char auth[]="uZrUVotdoC_tIUu8zqz56j-ATKg2JOTQ";


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(redled, OUTPUT);
  pinMode(blueled, OUTPUT);
  pinMode(dhtpin, INPUT);

  sensor.setup(dhtpin, DHTesp::DHT22);
  timer.setInterval(500L, ReadDHT);
  Blynk.begin(auth,ssid,pass,"blynk.cloud",80);
  Wire.begin(lcd_SDA, lcd_SCL);
  lcd.init();              
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  Blynk.run();
  timer.run();
  TempAndHumidity x = sensor.getTempAndHumidity();
  lcd.setCursor(0,0);
  lcd.print("Temperature:");
  lcd.setCursor(12,0);
  lcd.print(x.temperature);
  lcd.setCursor(0,1);
  lcd.print("Humidity:");
  lcd.setCursor(9,1);
  lcd.print(x.humidity);
  }

void ReadDHT(){
  TempAndHumidity values = sensor.getTempAndHumidity();
  Blynk.virtualWrite(V0,values.temperature);
  Blynk.virtualWrite(V1,values.humidity);
}

BLYNK_WRITE(BlynkTerminal){
  String cmd = param.asStr();
  TempAndHumidity x = sensor.getTempAndHumidity();
  if (cmd== "red on") digitalWrite(redled, HIGH);
  else if (cmd == "temperature") terminal.print(x.temperature);
  else if (cmd == "humidity") terminal.print(x.humidity);
  else terminal.println("Invalid command");

}