Day of week in ic realtime ds1307

Other Hardware General Electronics
1

hello everyone!

Is it important to set day of week in ds1307 to exact value? without exact value of day of week, does ds1307 run well?

Thanks

2

It is only important if you want the day of week to be correct.

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Your computer hardware has the date/time so you can set your DS1307 to your system time with this:

RTC.begin(DateTime(__DATE__, __TIME__)); // comment-out this line after one use to not reset the time.

After the first use (setting the RTC to your system time), comment-out this line.

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If you are only interested in the time you can just set that. In fact, if you are not interested in AM/PM (just what 'time') you can also ignore the am/pm indicator. The date/day/day of week will just default to a starting value on power up and increment from that point.

The answer to your question is that the clock will work correctly without the exact value for DoW.

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