diff options
Diffstat (limited to 'Smol Watch Project/My Project/mars_clock.c')
| -rw-r--r-- | Smol Watch Project/My Project/mars_clock.c | 75 |
1 files changed, 72 insertions, 3 deletions
diff --git a/Smol Watch Project/My Project/mars_clock.c b/Smol Watch Project/My Project/mars_clock.c index 82a47d08..53ce3362 100644 --- a/Smol Watch Project/My Project/mars_clock.c +++ b/Smol Watch Project/My Project/mars_clock.c @@ -8,10 +8,79 @@ #include <math.h>
#include "mars_clock.h"
-// note: mars time not working, committing just the earth clock.
+static unsigned short days[4][12] =
+{
+ { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335},
+ { 366, 397, 425, 456, 486, 517, 547, 578, 609, 639, 670, 700},
+ { 731, 762, 790, 821, 851, 882, 912, 943, 974,1004,1035,1065},
+ {1096,1127,1155,1186,1216,1247,1277,1308,1339,1369,1400,1430},
+};
-void update_display(Watch *watch, struct calendar_date_time date_time) { +unsigned int date_time_to_epoch(struct calendar_date_time date_time)
+{
+ unsigned int second = date_time.time.sec;
+ unsigned int minute = date_time.time.min;
+ unsigned int hour = date_time.time.hour;
+ unsigned int day = date_time.date.day-1; // 0-30
+ unsigned int month = date_time.date.month-1; // 0-11
+ unsigned int year = date_time.date.year - 1970; // 0-99
+ return (((year/4*(365*4+1)+days[year%4][month]+day)*24+hour)*60+minute)*60+second;
+}
+
+void epoch_to_date_time(struct calendar_date_time date_time, unsigned int epoch)
+{
+ date_time.time.sec = epoch % 60;
+ epoch /= 60;
+ date_time.time.min = epoch % 60;
+ epoch /= 60;
+ date_time.time.hour = epoch % 24;
+ epoch /= 24;
+
+ unsigned int years = epoch/(365*4+1)*4;
+ epoch %= 365*4+1;
+
+ unsigned int year;
+ for (year=3; year>0; year--)
+ {
+ if (epoch >= days[year][0])
+ break;
+ }
+
+ unsigned int month;
+ for (month=11; month>0; month--)
+ {
+ if (epoch >= days[year][month])
+ break;
+ }
+
+ date_time.date.year = years+year;
+ date_time.date.month = month+1;
+ date_time.date.day = epoch-days[year][month]+1;
+}
+
+void h_to_hms(struct calendar_date_time *date_time, double h) {
+ unsigned int seconds = (unsigned int)(h * 3600.0);
+ date_time->time.hour = seconds / 3600;
+ seconds = seconds % 3600;
+ date_time->time.min = floor(seconds / 60);
+ date_time->time.sec = round(seconds % 60);
+}
+
+
+void update_display(Watch *watch, struct calendar_date_time date_time, bool local) { char buf[6]; - sprintf(&buf[0], "TE %02d%02d%02d", date_time.time.hour, date_time.time.min, date_time.time.sec); + if (local) { + sprintf(&buf[0], "TE %02d%02d%02d", date_time.time.hour, date_time.time.min, date_time.time.sec); + } else { + unsigned int now = date_time_to_epoch(date_time); + double jdut = 2440587.5 + ((double)now / 86400.0);
+ double jdtt = jdut + ((37.0 + 32.184) / 86400.0);
+ double jd2k = jdtt - 2451545.0;
+ double msd = ((jd2k - 4.5) / 1.0274912517) + 44796.0 - 0.0009626;
+ double mtc = fmod(24 * msd, 24);
+ struct calendar_date_time mars_time;
+ h_to_hms(&mars_time, mtc);
+ sprintf(&buf[0], "MA %02d%02d%02d", mars_time.time.hour, mars_time.time.min, mars_time.time.sec); + } watch_display_string(watch, buf, 0); } |