#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int DIR = 12;
const int STEP = 14;
const int  steps_per_rev = 200;

int volta;
int botaomais = 4;
int botaoroda = 5;
int botaolimpa = 18;
int lap;
int count = 1;
int volta_atual = 0;

unsigned long startTime;
unsigned long currentTime;
const unsigned long period = 1;


void setup()
{
  lcd.init();
  lcd.backlight();
  pinMode(4 , INPUT_PULLUP);  //botao limpa
  pinMode(5, INPUT_PULLUP);   //botao roda
  pinMode(18, INPUT_PULLUP);  //botao limpa
  Serial.begin(115200);
  pinMode(STEP, OUTPUT);
  pinMode(DIR, OUTPUT);
  lcd.setCursor(0, 0);
  lcd.print("Ajuste : 01");
  lcd.setCursor(0, 1);
  lcd.print("Parado : 00");
  startTime = millis();  //initial start time
}
void loop()
{

  currentTime = millis();
  botaomais = digitalRead(4);
  botaoroda = digitalRead(5);
  botaolimpa = digitalRead(18);

  if (botaolimpa == LOW)
  {
    count = 0;
    lcd.setCursor(0, 0);
    lcd.print("Ajuste : ");
    if (count < 10) {
      lcd.print("0");
    }
    lcd.print(count);
    delay(200);
  }

    if (botaomais == LOW)
    {
    count++;
    delay(200);
    lcd.setCursor(0, 0);
    lcd.print("Ajuste : ");
    if (count < 10) {
      lcd.print("0");
    }
    lcd.print(count);
  }

  volta = count * 200;
  lap = volta / 200;

  if (currentTime - startTime >= period)
  {
    if (botaoroda == LOW)
    {
       //digitalWrite(DIR, LOW);
       for(int i = 0; i<=volta; i++)
       // for(int i = 0; i<=steps_per_rev; i++)
     {
       digitalWrite(DIR, LOW);
       digitalWrite(STEP, HIGH);
       delayMicroseconds(0.01);
       digitalWrite(STEP, LOW);
       delayMicroseconds(0.01);

       lcd.setCursor(0,1);
       lcd.print("volta_atual: ");
       volta_atual = lap - (i / 200);
        if (volta_atual < 100)
        {
          lcd.print("0");
        }
        lcd.print(volta_atual);
        if (volta_atual == 0)
        {

          lcd.setCursor(0, 1);
          lcd.print("Parado ");
        }
      
     }
  }
    startTime = currentTime;
  }
}