#include <PZEM004Tv30.h>
#include <Wire.h>
#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>

PZEM004Tv30 pzem(16, 17); // Software Serial pin 16 (RX) & 17 (TX)
LiquidCrystal_I2C lcd(0x27, 16, 2);

float voltage, current, power, energy;

char ssid = "Wokwi-GUEST"
char pass = ""

void setup() {
  Serial.begin(115200);
  
  WiFi.begin(ssid, pass);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(300);
  }
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("System Transaksi");
  lcd.setCursor(0, 1);
  lcd.print("Meteran Listrik");
  delay (3000);
  lcd.clear();

}

void loop() {
  float voltage = pzem.voltage();
  if (voltage != NAN) {
    Serial.print("Voltage: ");
    Serial.print(voltage);
    Serial.println("V");
  } else {
    Serial.println("Error reading voltage");
  }

  float current = pzem.current();
  if (current != NAN) {
    Serial.print("Current: ");
    Serial.print(current);
    Serial.println("A");
  } else {
    Serial.println("Error reading current");
  }

  float power = pzem.power();
  if (current != NAN) {
    Serial.print("Power: ");
    Serial.print(power);
    Serial.println("W");
  } else {
    Serial.println("Error reading power");
  }

  float energy = pzem.energy();
  if (current != NAN) {
    Serial.print("Energy: ");
    Serial.print(energy, 3);
    Serial.println("kWh");

  } else {
    Serial.println("Error reading energy");
  }

  float frequency = pzem.frequency();
  if (current != NAN) {
    Serial.print("Frequency: ");
    Serial.print(frequency, 1);
    Serial.println("Hz");
  } else {
    Serial.println("Error reading frequency");
  }

  delay(1000); // this speeds up 1000 the simulation
}