RTC DS3231 always remember the old time

Question

I try to change time on windows to test my programing condition but RTC usually keep old time when i change time on windows and re-upload the code . I'm also removing the battery and cut the power it is still not working.

here is my set up and library is https://github.com/adafruit/RTClib

void setup () {
#ifndef ESP8266
  while (!Serial); // for Leonardo/Micro/Zero
#endif
Serial.begin(9600);
   Serial.println("ESP start...");
  pinMode(Ledpin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  digitalWrite(buzzer, HIGH);
delay(3000); // wait for console opening
if (! rtc.begin()) {
  Serial.println("Couldn't find RTC");
 while (1);
}
if (rtc.lostPower()) {
    Serial.println("RTC lost power, lets set the time!");
    // following line sets the RTC to the date &amp; time this sketch was compiled
    rtc.adjust(DateTime(F(DATE), F(TIME)));
    // This line sets the RTC with an explicit date &amp; time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
  }
}

RTC DS3231 always remember the old time

0 Answers0