Use new RTCZero epoch API's

Author: sandeepmistry

src/time.cpp

@@ -11,31 +11,16 @@ RTCZero rtc;
 extern "C" {
     int _gettimeofday(struct timeval* tp, void* /*tzvp*/)
     {
-        struct tm tm;
-
-        tm.tm_isdst = -1;
-        tm.tm_yday = 0;
-        tm.tm_wday = 0;
-        tm.tm_year = rtc.getYear() + 100;
-        tm.tm_mon = rtc.getMonth() + 1;
-        tm.tm_mday = rtc.getDay();
-        tm.tm_hour = rtc.getHours();
-        tm.tm_min = rtc.getMinutes();
-        tm.tm_sec = rtc.getSeconds();
-
-        tp->tv_sec = mktime(&tm);
+        tp->tv_sec = rtc.getEpoch();
         tp->tv_usec = 0;
 
         return 0;
     }
 
     int settimeofday(const struct timeval* tp, const struct timezone* /*tzp*/)
     {
-        struct tm* tmp = gmtime(&tp->tv_sec);
-
         rtc.begin();
-        rtc.setDate(tmp->tm_mday, tmp->tm_mon - 1, tmp->tm_year - 100);
-        rtc.setTime(tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+        rtc.setEpoch(tp->tv_sec);
 
         return 0;
     }