RTC syntax for time functions

hello,

i working ds3231 rtc module. made own module , using scl , sda pins, because need accurate clock. configured clock , rtc library without bigger problems can see correctly setted time , date via serial interface.

code: [select]


void loop () {
    datetime = rtc.now();
   
    serial.print(now.day(), dec);
    serial.print('/');
    serial.print(now.month(), dec);
    serial.print('/');
    serial.print(now.year(), dec);
    serial.print(' ');
    serial.print(now.hour(), dec);
    serial.print(':');
    serial.print(now.minute(), dec);
    serial.print(':');
    serial.print(now.second(), dec);
    serial.println();


now want use other i/o devices don't know how. example, turn led on @ 20h , turn off @ 6h every day. can't find similar tutorials learn how that, because first time working rtc.

i wonder if should this?

if (now.hour() >= 20) digitalwrite (led, high);

code: [select]


if      (now.hour() >= 20) digitalwrite (led, high);
else if (now.hour() <   6) digitalwrite (led, high);
else                       digitalwrite (led, low);


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