Mourad Mourad

Important changes to forums and questions

All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.

5 years, 9 months ago.

Time Problem ---> gmtime() Function

i try to use the function "gmtime()" from the Time lib. But i think it dosent work with the mbed Platform.

have enyone any Idea how can i convert the "Time_t" value to the Hour/minut/second !?

Thanks

1 Answer

Paul Staron
5 years, 9 months ago.

Something I use, not very special but works for me. You need to declare the variables somewhere in your code (e.g. RTCsecond etc.). Converts to string and integer values.

RTC snip

void readRTC()
{
    time_t seconds = time(NULL);
    strftime(timebuf,50,"%H:%M:%S", localtime(&seconds));
    strftime(datebuf,50,"%a %d %b %Y", localtime(&seconds));
                                
    char buf[80];
    strftime(buf, 2,"%S", localtime(&seconds));
    RTCsecond = atoi(buf);
    strftime(buf, 2,"%M", localtime(&seconds));
    RTCminute = atoi(buf);                       
    strftime(buf, 2,"%H", localtime(&seconds));
    RTChour = atoi(buf);
    strftime(buf, 2,"%d", localtime(&seconds));                                
    RTCdayofmonth = atoi(buf);
    strftime(buf, 2,"%w", localtime(&seconds));                
    RTCdayofweek = atoi(buf);
    strftime(buf, 2,"%m", localtime(&seconds));
    RTCmonth = atoi(buf);
    strftime(buf, 2,"%y", localtime(&seconds));
    RTCyear = atoi(buf);
}

Accepted Answer

thats perfect Solution wath i need it :-) thank you very much

posted by Mourad Mourad 02 Feb 2019