#define BLYNK_AUTH_TOKEN "IdFL01j0b4nhryIUDGLLBEZozeLY31zz"
#define BLYNK_TEMPLATE_ID "TMPL6zTkVv82M"
#define BLYNK_TEMPLATE_NAME "PROTECTION SYSTEM DEVICE"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <LiquidCrystal_I2C.h>
#include "EmonLib.h"

EnergyMonitor emon;
 #define vCalibration 83.3

char auth[] = "IdFL01j0b4nhryIUDGLLBEZozeLY31zz";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// set the LCD number of columns and rows
int lcdColumns = 16;
int lcdRows = 2;

BlynkTimer timer;
 
// set LCD address, number of columns and rows
// if you don't know your display address, run an I2C scanner sketch
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

#define relay 2
int SW_relay = 0;
char indata;
const int meter = 34;
int tmp_buka;

BLYNK_WRITE(V1)
{
  SW_relay = param.asInt();
  if (SW_relay ==1){
    digitalWrite(relay, HIGH);
    Serial.println("Relay terbuka");
    Blynk.virtualWrite(V1, HIGH);
  
   
  
  }else{
    digitalWrite(relay, LOW);
    Serial.println("Relay tertutup");
    Blynk.virtualWrite(V1, LOW);
   
     
  }
}

BLYNK_WRITE(V2)
{
  indata = param.asInt();
  //const int tes=analogRead(meter);
  //Serial.println(tes);
  
  //lcd.clear();
  //lcd.setCursor(0, 1);
  // print message
  //lcd.print(tes);
  //lcd.print(" v");

  emon.calcVI(20, 2000);
  yield();
  
  Serial.print("Vrms: ");
  Serial.println(emon.Vrms, 2);
  Serial.print("V");
 //Serial.println("status auto");
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Vrms:");
  lcd.print(emon.Vrms, 2);
  lcd.print("V");
 
  float tes = emon.Vrms;
  Blynk.virtualWrite(V0, tes);
  delay(500);
  if (tes > 253)
 {
  
  Blynk.virtualWrite(V3,"OVER VOLTAGE");
  
  lcd.setCursor(0, 0);
  // print message
  lcd.print("OVER VOLTAGE");
  delay(500);

 }
 if (tes< 216)
 {
  
  Blynk.virtualWrite(V3,"UNDER VOLTAGE");
  lcd.setCursor(0, 0);
  // print message
  lcd.print("UNDER VOLTAGE");
  delay(500);


 }

 //if(tes >216 && tes < 253)
 if(tes >216 && tes <253)
{
  
  Blynk.virtualWrite(V3,"NORMAL VOLTAGE");
  lcd.setCursor(0, 0);
  // print message
  lcd.print("NORMAL VOLTAGE");
  delay(500);
}
 
}




void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(meter, INPUT);
  pinMode(relay, OUTPUT);
  Blynk.begin(auth, ssid, pass);
  

  lcd.init();
  // turn on LCD backlight                      
  lcd.backlight();
   lcd.setCursor(0, 0);
  // print message
  lcd.print("SYSTEM PROTECTION");
  emon.voltage(35, vCalibration, 1.7); // Voltage: input pin, calibration, phase_shift
}

void loop() {
  // put your main code here, to run repeatedly:
  Blynk.run();
  timer.run();
 //lightInit = analogRead(sensorPin);
   const int tes=0;
    //Serial.println(tes);
    
    Blynk.virtualWrite(V5, tes);
    delay(500);
 }