1. 디지털 시계가 움직이지 않고 11:59:50:00 에 멈춰 있습니다.

2. temp 부분에서 string을 사용하는데 제 lcd에는 소숫점이 표시가 되지않습니다 어떻게 해야 소숫점 2번째 자리까지 표시할수있죠?? 코드 부분 첨부 하겠습니다

temp-----------------------------------------------------------------------------------------------------------

void temp_mode()

{

  temp_value = analogRead(temp_pin);

  temp = 0.488155 * (temp_value - 20);

  temp_str = String(temp);

  lcd.setCursor(0,1);

  lcd.print(" [Temp] ");

  lcd.print(temp_str);

  lcd.print("C  ");

}

clock------------------------------------------------------------------------------------------------------------

void clock_mode()

{

  if(sw2_clock_flag == 1)

  {

    lcd.setCursor(0,0);

    lcd.print("[ DigitalClock ]");

  }

}

timer------------------------------------------------------------------------------------------------------------

void ms_Plus()

{

  ms++;

  if(ms = 100)

  {

    ms = 0;

    ss++;

  }

  if(ss = 60)

  {

    ss = 0;

    mm++;

  }

  if(mm = 60)

  {

    mm = 0;

    hh++;

  }

  if(hh = 24)

  {

    hh = 0;

  }

}

void timer_mode()

{

  if(timer_flag = 1)

  {

    attachInterrupt(digitalPinToInterrupt(pulse_pin),ms_Plus,RISING);

  }

  if(timer_flag = 0)

  {

  hh = 11;

  mm = 59;

  ss = 50;

  ms = 0;

  }

  timer_10hh = String(hh/10);

  timer_1hh = String(hh%10);

  timer_10mm = String(mm/10);

  timer_1mm = String(mm%10);

  timer_10ss = String(ss/10);

  timer_1ss = String(ss%10);

  timer_10ms = String(ms/10);

  timer_1ms = String(ms%10);

  if(sw2_clock_flag == 1)

  {

    lcd.setCursor(0,1);

    if(hh<12)

    {

      lcd.print("[AM]" + timer_10hh + timer_1hh + ":" + timer_10mm + timer_1mm + ":" + timer_10ss + timer_1ss + ":" + timer_10ms + timer_1ms);

    }

     if(hh>12)

    {

      lcd.print("[PM]" + timer_10hh + timer_1hh + ":" + timer_10mm + timer_1mm + ":" + timer_10ss + timer_1ss + ":" + timer_10ms + timer_1ms);

    }

  }

}