#include <stdio.h>
#include <string.h>
#include <DS1302.h>

/* Set the appropriate digital I/O pin connections */
uint8_t CE_PIN   = 5;
uint8_t IO_PIN   = 6;
uint8_t SCLK_PIN = 7;

/* Create buffers */
char buf[50];
char day[10];

/* Create a DS1302 object */
DS1302 rtc(CE_PIN, IO_PIN, SCLK_PIN);

void print_time()
{
  /* Get the current time and date from the chip */
  Time t = rtc.time();

  /* Name the day of the week */
  memset(day, 0, sizeof(day));  /* clear day buffer */
  	
  switch (t.day) {
    case 1:
      strcpy(day, "Sunday");
      break;
    case 2:
      strcpy(day, "Monday");
      break;
    case 3:
      strcpy(day, "Tuesday");
      break;
    case 4:
      strcpy(day, "Wednesday");
      break;
    case 5:
      strcpy(day, "Thursday");
      break;
    case 6:
      strcpy(day, "Friday");
      break;
    case 7:
      strcpy(day, "Saturday");
      break;
  }
  snprintf(buf, sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
           day,
           t.yr, t.mon, t.date,
           t.hr, t.min, t.sec);
  Serial.println(buf);
}
void setup()
{  Serial.begin(9600);
  rtc.write_protect(false);
  rtc.halt(false);
  Time t(2020, 8, 5, 11,12,13,4);
  rtc.time(t);}
void loop()
{ print_time();
  delay(1000);}