displayTime function using 4 day chained counters

daycounter_example.ino

#include <DayCounter.h>
#include <ShiftRegister.h>

/* * * * * * * * * * * * * * * * * *
 * pin 5 = DayCounter.SER (data)   *
 * pin 7 = DayCounter.CLK (clock)  *
 * pin 9 = DayCounter.RCK (latch)  *
 * * * * * * * * * * * * * * * * * */
DayCounter dc(5, 7, 9);
int count = 0;

void setup()
{
  /* nothing to do here */
}

void loop()
{
  for(int day = 0; day < 100; day++)
    for(int hour = 0; hour < 24; hour++)
      for(int minute = 0; minute < 60; minute++)
        for(int second = 0; second < 60; second++){
          displayTime(day, hour, minute, second);
          delay(200); // some time to watch the display change
        }
}

void displayTime(int days, int hours, int minutes, int seconds){
  uint32_t number = 0;
  number += seconds;
  number += minutes * 100;
  number += hours * 10000;
  number += days * 1000000;
  
  dc.displayNumber(number, 8, -1);
}