2 files changed, 46 insertions, 0 deletions
diff --git a/arm9/lib/include/RTC_api.h b/arm9/lib/include/RTC_api.h
new file mode 100644
index 00000000..d2577cdf
--- /dev/null
+++ b/arm9/lib/include/RTC_api.h
@@ -0,0 +1,34 @@
+#ifndef NITRO_RTC_API_H_
+#define NITRO_RTC_API_H_
+
+typedef enum RTCWeek
+{
+    RTC_WEEK_SUNDAY = 0,
+    RTC_WEEK_MONDAY,
+    RTC_WEEK_TUESDAY,
+    RTC_WEEK_WEDNESDAY,
+    RTC_WEEK_THURSDAY,
+    RTC_WEEK_FRIDAY,
+    RTC_WEEK_SATURDAY,
+    RTC_WEEK_MAX
+}
+    RTCWeek;
+
+typedef struct RTCDate
+{
+    u32 year;
+    u32 month;
+    u32 day;
+    RTCWeek week;
+}
+    RTCDate;
+
+typedef struct RTCTime
+{
+    u32 hour;
+    u32 minute;
+    u32 second;
+}
+    RTCTime;
+
+#endif //NITRO_RTC_API_H_
diff --git a/arm9/lib/include/RTC_convert.h b/arm9/lib/include/RTC_convert.h
new file mode 100644
index 00000000..a75928b9
--- /dev/null
+++ b/arm9/lib/include/RTC_convert.h
@@ -0,0 +1,12 @@
+#ifndef NITRO_RTC_CONVERT_H_
+#define NITRO_RTC_CONVERT_H_
+
+s32 RTC_ConvertDateToDay(const RTCDate * date);
+s32 RTCi_ConvertTimeToSecond(const RTCTime * time);
+s64 RTC_ConvertDateTimeToSecond(const RTCDate * date, const RTCTime * time);
+void RTC_ConvertDayToDate(RTCDate * date, s32 day);
+void RTCi_ConvertSecondToTime(RTCTime * time, s32 sec);
+void RTC_ConvertSecondToDateTime(RTCDate * date, RTCTime * time, s64 sec);
+RTCWeek RTC_GetDayOfWeek(RTCDate * date);
+
+#endif //NITRO_RTC_CONVERT_H_