I have an I2C Real Time Clock, DS3231 RTC module , and I just want something like Unix Time. I'm using the uRTCLib, looking at the class methods but dont see anything like that. I'm thinking there must be a raw read that would return all the digits. Is there an easy way to do that?
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The DS3231 doesn't report the Unix time. It reports the current time in broken-down form (year, month... second). If you need Unix time, you have to compute it.
I suggest using Adafruit's RTClib. This library implements the computation of Unix time, e.g.
uint32_t unix_time = rtc.now().unixtime();
