servertimesync (experimental)

include/lorawan.h

@@ -4,8 +4,8 @@
 #include "globals.h"
 #include "rcommand.h"
 #include "timekeeper.h"
-#if(DBTIMESYNC)
-#include "DBtimesync.h"
+#if(ServertimeSYNC)
+#include "Servertimesync.h"
 #endif
 
 // LMIC-Arduino LoRaWAN Stack

include/rcommand.h

@@ -9,8 +9,8 @@
 #include <rom/rtc.h>
 #include "cyclic.h"
 #include "timekeeper.h"
-#if(DBTIMESYNC)
-#include "DBtimesync.h"
+#if(ServertimeSYNC)
+#include "Servertimesync.h"
 #endif
 
 // table of remote commands and assigned functions

include/servertimesync.h

@@ -0,0 +1,27 @@
+#ifndef _ServertimeSYNC_H
+#define _ServertimeSYNC_H
+
+#include "globals.h"
+#include "Servertimesync.h"
+#include "timekeeper.h"
+
+#define SYNC_SAMPLES 3
+//#define SYNC_CYCLE 600 // seconds between two time sync requests
+#define SYNC_CYCLE 20 // seconds between two time sync requests
+#define SYNC_TIMEOUT                                                           \
+  (SYNC_SAMPLES * (SYNC_CYCLE + 60)) // timeout waiting for time sync answer
+#define SYNC_THRESHOLD 0.01f // time deviation threshold triggering time sync
+#define TIME_SYNC_OPCODE 0x90
+#define TIME_REQ_OPCODE 0x92
+#define TIME_ANS_OPCODE 0x93
+
+extern uint32_t time_sync_messages[], time_sync_answers[];
+extern uint8_t time_sync_seqNo;
+
+void send_Servertime_req(void);
+void recv_Servertime_ans(uint8_t val[]);
+void process_Servertime_sync_req(void *taskparameter);
+void process_Servertime_sync_ans(void *taskparameter);
+void force_Servertime_sync(uint8_t val[]);
+
+#endif