Displaying time with Time library

Forum 2005-2010 (read only) Software Syntax & Programs
1

I'm trying to display the time using the Time library

void displayTime()
{

  long lastUpdate = 0;  // Force update
  byte i;
  byte key = 0xFF;

  while (key!= CENTER_KEY) {
    // Update temp
    if( millis() > lastUpdate + 500) {
      time_t curr_time = now();

      int hours = hour(curr_time);
      int minutes = minute(curr_time);
      int seconds = second(curr_time);

      char hours_temp[3];
      char minutes_temp[3];
      char seconds_temp[3];
      itoa (hours, hours_temp, 10);
      itoa (minutes, minutes_temp, 10);
      itoa (seconds, seconds_temp, 10);
      
      

      lcd.writeString(0, 2, hours_temp, MENU_NORMAL);

     // lcd.writeString(30, 2, ":", MENU_NORMAL); 

      lcd.writeString(30, 2, minutes_temp, MENU_NORMAL);
     // lcd.writeString(42, 2, ":", MENU_NORMAL);  

      lcd.writeString(55, 2, seconds_temp, MENU_NORMAL);


      lastUpdate = millis();
    }
    key = checkKeypressed();
  }


  // waitfor_OKkey();
}

the problem is that there is no padding, so as soon as the seconds go past 59 it shows 19 (then 29, 39, etc...

how can i add padding?

2

Instead of itoa, use sprintf. You can write all three values into the string in one call, with leading 0's and :s between them.

3