// Breno Correia Lociks
// Exercício 3

#include <LiquidCrystal_I2C.h>
#define pot 34
#define led1 16
#define led2 17
#define LED_BUILTIN 2

LiquidCrystal_I2C lcd(0x27, 16, 2);

int tempoAnterior = 0;

void setup() {
  lcd.init();
  lcd.setBacklight(HIGH);

  lcd.setCursor(0, 0);
  lcd.print("Pot = ");
  lcd.setCursor(0, 1);
  lcd.print("PotMap = ");

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  int potLeitura = analogRead(pot);
  int potMap = map(potLeitura, 0, 4095, 0, 100);

  lcd.setCursor(6, 0);
  lcd.print(potLeitura);

  if(potLeitura < 1000) {
    lcd.setCursor(9, 0);
    lcd.print(" ");
  }
  if(potLeitura < 100) {
    lcd.setCursor(8, 0);
    lcd.print(" ");
  }
  if(potLeitura < 10) {
    lcd.setCursor(7, 0);
    lcd.print(" ");
  }
  
  lcd.setCursor(9, 1);
  lcd.print(potMap);
  lcd.print(" ");
  lcd.print("%");

  if(potMap < 100) {
    lcd.setCursor(13, 1);
    lcd.print(" ");
  }

  if(potMap < 10) {
    lcd.setCursor(12, 1);
    lcd.print(" ");
  }
  
  if(potMap < 50) {
    digitalWrite(led1, HIGH);
  }
  else {
    digitalWrite(led1, LOW);
  }

  if(potMap > 50) {
    digitalWrite(led2, HIGH);
  }
  else {
    digitalWrite(led2, LOW);
  }

  if(potMap > 25 && potMap < 75) {
    if(millis() - tempoAnterior > 1000){
      tempoAnterior = millis();
      
      if(LED_BUILTIN == HIGH) {
        digitalWrite(LED_BUILTIN, LOW);
      }
      else if(LED_BUILTIN == LOW) {
        digitalWrite(LED_BUILTIN, HIGH);
      }
    }
  }
}