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Code: Select all

void InitTime()
{
	struct tm bts, *ptm;

	tzsetchar("PST8PDT7");

	int rv = RTCGetTime( bts );  // This returns the correct time & date.
	if ( rv ) {
		puts("Error Getting time");
		return;
	}
	puts("Time from RTC:");
	iprintf("Year: %d\r\n", bts.tm_year );
	iprintf("Mon:  %d\r\n", bts.tm_mon  );
	iprintf("Day:  %d\r\n", bts.tm_mday );
	iprintf("Hour: %d\r\n", bts.tm_hour );
	iprintf("Min:  %d\r\n", bts.tm_min  );
	iprintf("Sec:  %d\r\n", bts.tm_sec  );

	time_t t = timegm( &bts );
	iprintf("Set GMTime: %ld\r\n", t );
	set_time( t );

	OSTimeDly(TICKS_PER_SECOND );

	t = 0;
	time( &t );
	iprintf("Get GMTime: %ld\r\n", t );

	ptm = gmtime( &t );
	puts("Sys Time:");
	iprintf("Year: %d\r\n", ptm->tm_year );
	iprintf("Mon:  %d\r\n", ptm->tm_mon  );
	iprintf("Day:  %d\r\n", ptm->tm_mday );
	iprintf("Hour: %d\r\n", ptm->tm_hour );
	iprintf("Min:  %d\r\n", ptm->tm_min  );
	iprintf("Sec:  %d\r\n", ptm->tm_sec  );

	struct tm *ltime = localtime(&t);
	puts("Local Time:");
	iprintf("Year: %d\r\n", ltime->tm_year );
	iprintf("Mon:  %d\r\n", ltime->tm_mon  );
	iprintf("Day:  %d\r\n", ltime->tm_mday );
	iprintf("Hour: %d\r\n", ltime->tm_hour );
	iprintf("Min:  %d\r\n", ltime->tm_min  );
	iprintf("Sec:  %d\r\n", ltime->tm_sec  );

	return;

	// Set time from offboard RTC chip.
	//if ( RTCSetSystemFromRTCTime() )
	//	puts("Error Setting time");
}

Code: Select all

time_t mytimegm(struct tm *bts)
{
    time_t ttYears = 0;     // Seconds converted from tm_year (since 1900)
    time_t ttMonths = 0;    // Seconds converted from tm_mon (0-11)
    time_t ttDays = 0;      // Seconds converted from tm_mday (1-31)
    time_t ttHours = 0;     // Seconds converted from tm_hour (0-23)
    time_t ttMinutes = 0;   // Seconds converted from tm_min (0-59)
    time_t ttSecs = 0;      // Cumulative seconds including tm_sec (0-59)
	time_t numYears=0;

    int daysPerMonth[] = { 31 /* Jan */, 28 /* Feb */, 31 /* Mar */,
                           30 /* Apr */, 31 /* May */, 30 /* Jun */,
                           31 /* Jul */, 31 /* Aug */, 30 /* Sep */,
                           31 /* Oct */, 30 /* Nov */, 31 /* Dec */ };

    // Extract time_t seconds from tm_year (time_t starts from 1970-01-01)
	 #ifdef foo
   if(bts->tm_year<69) 
	 ttDays -= (((69-bts->tm_year)+3) / 4) * 24 * 3600;
	 else
     ttDays += (((bts->tm_year - 69)) / 4) * 24 * 3600;      // Add leap days excluding current year
	 #else
	 numYears = (bts->tm_year+1900) - 1970;
	 ttYears  = numYears * 365 * 86400;	// Calc seconds of years since 1970.
	 ttYears += (numYears / 4) * 86400; // Add a day of sec for each leap year.
	 #endif

    // Extract time_t seconds from tm_mon
    for (int i = 0; i < bts->tm_mon; i++ ) { ttMonths += daysPerMonth[i]; }
    ttMonths *= 24 * 3600;

    // Extract time_t seconds from tm_mday
    ttDays = (bts->tm_mday - 1) * 24 * 3600;
	#ifdef foo
    ttDays += ((bts->tm_year - 70) / 4) * 24 * 3600;      // Add leap days excluding current year
	#endif
    
    // Extract time_t seconds from tm_hour
    ttHours = bts->tm_hour * 3600;
    
    // Extract time_t seconds from tm_min
    ttMinutes = bts->tm_min * 60;
    
    // Tally up extracted seconds including tm_sec
    ttSecs = bts->tm_sec + ttMinutes + ttHours + ttDays + ttMonths + ttYears;
    iprintf("Sec: %d, Min: %ld, Hrs: %ld, Days: %ld, Mon: %ld, Yrs: %ld\r\n",
						bts->tm_sec, ttMinutes, ttHours, ttDays, ttMonths, ttYears );
    // Determine if current leap year and add add leap day if necessary
    if (((bts->tm_year % 4) == 0) && (bts->tm_mon > 1)) {
        ttSecs += 24 * 3600;   
    }

    return ttSecs;
}