//  set time start stop

#include <LiquidCrystal_I2C.h>     //ต้องมี lcd
LiquidCrystal_I2C lcd(0x27, 16, 2 ); //ต้องมี lcd
int h = 0;
int m = 0;
int s = 0;

int h1 = 0;
int m1 = 0;
int s1 = 0;

int h2 = 0;
int m2 = 0;
int s2 = 0;

int st = 0;
///////////////////////////////
void setup() {
  pinMode(4, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  pinMode(5, INPUT_PULLUP);
  lcd.init();  //ต้องมี lcd
  lcd.backlight(); //ต้องมี lcd
}///////////////////////////

void loop() {
 int sw1 = digitalRead(4);
  delay(100);
 if (sw1 == 0) {
    st++;
 if (st >= 7) {
      st = 0;
      delay(300);
    }
  }
  start();
  stop();
}////////////////////////end loop

/////////////////////function   start
void start() {
  if (st == 1) {
  int sw2 = digitalRead(3);
    delay(100);
  if (sw2 == 0) {
      h1++;
      if ( h1 >= 24) {
        h1 = 0;
      }
    }
   ///////// 
  int sw3 = digitalRead(5);
    delay(100);
  if (sw3 == 0) {
      h1--;
      if ( h1 <= 0) {
        h1 = 23;
      }
    }
    lcd.setCursor(6, 0);
    lcd.print("  ");
    delay(500);
  }

  if (st == 2) {
    int sw2 = digitalRead(3);
    delay(100);
  if (sw2 == 0) {
      m1++;
      if ( m1 >= 60) {
        m1 = 0;
      }
    }
  ///////////////////////////  
    int sw3 = digitalRead(5);
    delay(100);
  if (sw3 == 0) {
      m1--;
      if ( m1 <= 0) {
        m1 = 59;
      }
    }
    lcd.setCursor(9, 0);
    lcd.print("  ");
    delay(500);
  }
  if (st == 3) {
    int sw2 = digitalRead(3);
    delay(100);
  if (sw2 == 0) {
      s1++;
  if ( s1 >= 60) {
        s1 = 0;
      }
    }
    int sw3 = digitalRead(5);
    delay(100);
    if (sw3 == 0) {
      s1--;
      if ( s1 <= 0) {
        s1 = 59;
      }
    }
    lcd.setCursor(12, 0);
    lcd.print("  ");
    delay(500);
  }

  ////////////////////////
  lcd.setCursor(0, 0);
  lcd.print("Start");
  lcd.setCursor(6, 0);
  if (h1 <= 9) {
    lcd.print("0");
  }
  lcd.print(h1);
  lcd.setCursor(8, 0);
  lcd.print(":");
  ////////////////////////minute
  lcd.setCursor(9, 0);
  if (m1 <= 9) {
    lcd.print("0");
  }
  lcd.print(m1);
  lcd.setCursor(11, 0);
  lcd.print(":");
  ////////////////////////second
  lcd.setCursor(12, 0);
  if (s1 <= 9) {
    lcd.print("0");
  }
  lcd.print(s1);
  
}///////////////end loop

//////////////////////////function stop
void stop() {
  if (st == 4) {
    int sw2 = digitalRead(3);
    delay(100);
    if (sw2 == 0) {
      h2++;
      if ( h2 >= 24) {
        h2 = 0;
      }
    }
    int sw3 = digitalRead(5);
    delay(100);
    if (sw3 == 0) {
      h2--;
      if ( h2 <= 0) {
        h2 = 23;
      }
    }
    lcd.setCursor(6, 1);
    lcd.print("  ");
    delay(500);
  }
  if (st == 5) {
    int sw2 = digitalRead(3);
    delay(100);
    if (sw2 == 0) {
      m2++;
      if ( m2 >= 60) {
        m2 = 0;
      }
    }
    int sw3 = digitalRead(5);
    delay(100);
    if (sw3 == 0) {
      m2--;
      if ( m2 <= 0) {
        m2 = 59;
      }
    }
    lcd.setCursor(9, 1);
    lcd.print("  ");
    delay(500);
  }
  if (st == 6) {
    int sw2 = digitalRead(3);
    delay(100);
    if (sw2 == 0) {
      s2++;
      if ( s2 >= 60) {
        s2 = 0;
      }
    }
    int sw3 = digitalRead(5);
    delay(100);
    if (sw3 == 0) {
      s2--;
      if ( s2 <= 0) {
        s2 = 59;
      }
    }
    lcd.setCursor(12, 1);
    lcd.print("  ");
    delay(500);
  }
  ////////////////////////
  lcd.setCursor(0, 1);
  lcd.print("Stop");
  lcd.setCursor(6, 1);
  if (h2 <= 9) {
    lcd.print("0");
  }
  lcd.print(h2);
  lcd.setCursor(8, 1);
  lcd.print(":");
  ////////////////////////minute
  lcd.setCursor(9, 1);
  if (m2 <= 9) {
    lcd.print("0");
  }
  lcd.print(m2);
  lcd.setCursor(11, 1);
  lcd.print(":");
  ////////////////////////second
  lcd.setCursor(12, 1);
  if (s2 <= 9) {
    lcd.print("0");
  }
  lcd.print(s2);
  //lcd.setCursor(0, 0);
  //lcd.print(String(h) + ":" + String(m) + ":" + String(s) + "  ");
}