I'm trying to set time on DS1307 chip via Time library, but can't figure out how to do it. I successfully changed Arduino's time with setTime(hr,min,sec,day,month,yr) but it doesn't propagate to RTC chip :frowning:

There is a second library that comes with the Time library, called DS1307RTC. Once the system time is set, all that is needed is a call to RTC.set(): #include <Time.h> #include <DS1307RTC.h> #include <Wire.h> ... setTime(hr,min,sec,day,month,yr); RTC.set(now());

from adafruit: // Date and time functions using a DS1307 RTC connected via I2C and Wire lib #include <Wire.h> #include "RTClib.h" RTC_DS1307 RTC; void setup () { Serial.begin(57600); Wire.begin(); RTC.begin(); if (! RTC.isrunning()) { Serial.println("RTC is NOT running!"); …

Thanks guys! It's basically example code "RTC" from Time library examples. RTC.set(now()); sounds like what I'm looking for, thanks Jack! arghduino, I've tried Ada's example before, it doesn't set my RTC's chip time for some reason. I posted on adafruit forum, and they say it's because I'm not us…

Hmmmm, that's odd, I wouldn't think you'd have to use their RTC kit either. I have several of their RTCs and they work fine with the Time.h and DS1307RTC.h libraries. I think I may have tried Ada's library in the past, and I don't remember any problems, but for whatever reason I just stick with Time…

Thanks again Jack! This totally worked! setTime(hr,min,sec,day,month,yr); RTC.set(now()); Yeah I'm at loss why Adafruit's library is not setting time on my chip. BTW I found this great and super simple code online that sets time just fine without any library: //Arduino 1.0+ Only //Arduino 1.0+ O…

bratan: BTW I found this great and super simple code online that sets time just fine without any library: While libraries are great because they simplify the mainline code, it's very much worthwhile to understand some of what's under the covers, in this case, using I2C to interface to the RTC ch…

Warning: Your "code online" link causes: 2012-11-19 12:44:12,High,An intrusion attempt by 129.121.36.98 was blocked.,Blocked,No Action Required,Web Attack: Malicious Toolkit Website 9,No Action Required,No Action Required," With Norton antivrus from my computer.

thanks for your replys :stuck_out_tongue:

Anybody have automatic school bell code

[SOLVED] How to set time on DS1307 using Time library?

Projects Programming

nickgammon October 25, 2012, 1:55am 2

Read this before posting a programming question

Your code?

Topic		Replies	Views
Setting RTC DS1307 General Guidance	36	4985	November 13, 2024
DS1307 not working General Guidance	38	254	April 3, 2026
Need help to understand DS1307RTC.h library and set time Programming	8	1911	April 23, 2022
Different ways to set the time on the DS1307 RTC Programming	9	5056	February 6, 2023
Setting time on the Ds 1307 RTC Programming	9	10569	May 5, 2021

[SOLVED] How to set time on DS1307 using Time library?

Related topics