makeTime function about time HOT 4 CLOSED

The tmElements_t data structure you are creating is not valid.

Keep in mind that the years in a tmElements structure are since 1970 and that the months start at 1 (for January) as do the days.

I hope this helps.

from time.

Thanks for your help.
But I don't think this would be a problem as the time_t means how many seconds has passed after 1/1/1970.
Also, When I change the day to 1, month to 1, year to 1970, it returns 1322155904 which is 17:31:44 11-24-2011, it just totally doesn't make sense.

from time.

Would you mind try this or similar code on your Arduino? As it's possible because something wrong with my IDE on the computer. But it didn't help even after I reinstalled this Time library.

from time.

Indeed your error is use of 0 for tm.Day and tm.Month.

I just tested this code:

#include <Time.h>
void setup() {
  Serial.begin(9600);
}

void loop() {
  setTime(sync());
  Serial.print(now());
  Serial.print(" ");
  Serial.print(hour());
  Serial.print(':');
  Serial.print(minute());
  Serial.print(':');
  Serial.print(second());
  Serial.print(' ');
  Serial.print(month());
  Serial.print('-');
  Serial.print(day());
  Serial.print('-');
  Serial.println(year());
  delay(500);
}
time_t sync() {
  tmElements_t tm;
  tm.Hour = 0;
  tm.Minute = 0;
  tm.Second = 0;
  tm.Day = 1;
  tm.Month = 1;
  tm.Year = 0;
  return makeTime(tm);
}

This is the result in the serial monitor:

0 0:0:0 0-0-1970
0 0:0:0 0-0-1970
0 0:0:0 0-0-1970
0 0:0:0 0-0-1970
0 0:0:0 0-0-1970

Time is working properly. You simply used 0 in those fields which begin at 1.

from time.