Feature RTC support added (experimental)

include/cyclic.h

@@ -11,6 +11,11 @@
 #include "bme680mems.h"
 #endif
 
+// Needed for RTC time sync if RTC present on board
+#ifdef HAS_RTC
+#include "rtc.h"
+#endif
+
 void doHousekeeping(void);
 void do_timesync(void);
 uint64_t uptime(void);

include/lorawan.h

@@ -17,6 +17,11 @@
 #include <Wire.h>
 #endif
 
+// Needed for RTC time sync if RTC present on board
+#ifdef HAS_RTC
+#include "rtc.h"
+#endif
+
 extern QueueHandle_t LoraSendQueue;
 
 void onEvent(ev_t ev);

include/rtc.h

@@ -0,0 +1,16 @@
+#ifndef _RTC_H
+#define _RTC_H
+
+#include "globals.h"
+#include <Wire.h> // must be included here so that Arduino library object file references work
+#include <RtcDS3231.h>
+
+extern RtcDS3231<TwoWire> Rtc; // Make RTCDS3231 instance globally availabe
+
+int rtc_init(void);
+int set_rtc(uint32_t UTCTime);
+int set_rtc(RtcDateTime now);
+uint32_t get_rtc();
+float get_rtc_temp();
+
+#endif