Moved timesync offset get/set from handler to ports to fix projects not using handler (#699)

ports/linux/datetime-init.c

@@ -15,14 +15,18 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <time.h>
-#include "bacnet/basic/service/h_ts.h"
 #include "bacport.h"
 #include "bacnet/datetime.h"
 
+static int32_t Time_Offset; /* Time offset in ms */
 
-static int32_t timedifference(struct timeval t0, struct timeval t1)
+/**
+ * @brief Calculate the time offset from the system clock.
+ * @return Time offset in ms
+  */
+static int32_t time_difference(struct timeval t0, struct timeval t1)
 {
-    return (t0.tv_sec - t1.tv_sec)*1000 + (t0.tv_usec - t1.tv_usec) / 1000;
+    return (t0.tv_sec - t1.tv_sec) * 1000 + (t0.tv_usec - t1.tv_usec) / 1000;
 }
 
 /**
@@ -32,32 +36,32 @@ static int32_t timedifference(struct timeval t0, struct timeval t1)
  * @param utc - True for UTC sync, False for Local time
  * @return True if time is set
  */
-void datetime_timesync(
-    BACNET_DATE *bdate, BACNET_TIME *btime, bool utc)
+void datetime_timesync(BACNET_DATE *bdate, BACNET_TIME *btime, bool utc)
 {
     struct timeval tv_inp, tv_sys;
     struct tm *timeinfo;
     time_t rawtime;
-    time( &rawtime);
+    time(&rawtime);
     timeinfo = localtime(&rawtime);
     /* fixme: only set the time if off by some amount */
-    timeinfo->tm_year = bdate->year-1900;
-    timeinfo->tm_mon  = bdate->month-1;
-    timeinfo->tm_mday  = bdate->day;
+    timeinfo->tm_year = bdate->year - 1900;
+    timeinfo->tm_mon = bdate->month - 1;
+    timeinfo->tm_mday = bdate->day;
     timeinfo->tm_hour = btime->hour;
-    timeinfo->tm_min  = btime->min;
-    timeinfo->tm_sec  = btime->sec;
+    timeinfo->tm_min = btime->min;
+    timeinfo->tm_sec = btime->sec;
     tv_inp.tv_sec = mktime(timeinfo);
-    tv_inp.tv_usec = btime->hundredths*10000;
+    tv_inp.tv_usec = btime->hundredths * 10000;
     if (gettimeofday(&tv_sys, NULL) == 0) {
         if (utc) {
-            handler_timesync_offset_set(timedifference(tv_inp, tv_sys) - (timezone - timeinfo->tm_isdst*3600)*1000);
+            Time_Offset = time_difference(tv_inp, tv_sys) -
+                (timezone - timeinfo->tm_isdst * 3600) * 1000;
 
         } else {
-            handler_timesync_offset_set(timedifference(tv_inp, tv_sys));
+            Time_Offset = time_difference(tv_inp, tv_sys);
         }
 #if PRINT_ENABLED
-        printf("Time offset = %d\n",handler_timesync_offset());
+        printf("Time offset = %d\n", Time_Offset);
 #endif
     }
     return;
@@ -72,7 +76,8 @@ void datetime_timesync(
  * @param true if DST is enabled and active
  * @return true if local time was retrieved
  */
-bool datetime_local(BACNET_DATE *bdate,
+bool datetime_local(
+    BACNET_DATE *bdate,
     BACNET_TIME *btime,
     int16_t *utc_offset_minutes,
     bool *dst_active)
@@ -83,9 +88,9 @@ bool datetime_local(BACNET_DATE *bdate,
     int32_t to;
 
     if (gettimeofday(&tv, NULL) == 0) {
-        to = handler_timesync_offset();
-        tv.tv_sec += (int) to/1000;
-        tv.tv_usec += (to%1000)*1000;
+        to = Time_Offset;
+        tv.tv_sec += (int)to / 1000;
+        tv.tv_usec += (to % 1000) * 1000;
         tblock = (struct tm *)localtime((const time_t *)&tv.tv_sec);
     }
     if (tblock) {
@@ -101,11 +106,12 @@ bool datetime_local(BACNET_DATE *bdate,
          *   int    tm_yday  Day of year [0,365].
          *   int    tm_isdst Daylight Savings flag.
          */
-        datetime_set_date(bdate, (uint16_t)tblock->tm_year + 1900,
+        datetime_set_date(
+            bdate, (uint16_t)tblock->tm_year + 1900,
             (uint8_t)tblock->tm_mon + 1, (uint8_t)tblock->tm_mday);
-        datetime_set_time(btime, (uint8_t)tblock->tm_hour,
-            (uint8_t)tblock->tm_min, (uint8_t)tblock->tm_sec,
-            (uint8_t)(tv.tv_usec / 10000));
+        datetime_set_time(
+            btime, (uint8_t)tblock->tm_hour, (uint8_t)tblock->tm_min,
+            (uint8_t)tblock->tm_sec, (uint8_t)(tv.tv_usec / 10000));
         if (dst_active) {
             /* The value of tm_isdst is:
                - positive if Daylight Saving Time is in effect,

src/bacnet/basic/service/h_ts.c

@@ -69,18 +69,6 @@ static void show_bacnet_date_time(BACNET_DATE *bdate, BACNET_TIME *btime)
 /* Callback for timesync set */
 static handler_timesync_set_callback_t handler_timesync_set_callback;
 
-static int32_t Time_Offset; /* Time offset in ms */
-
-int32_t handler_timesync_offset(void)
-{
-    return Time_Offset;
-}
-
-void handler_timesync_offset_set(int32_t offset)
-{
-    Time_Offset = offset;
-}
-
 void handler_timesync(
     uint8_t *service_request, uint16_t service_len, BACNET_ADDRESS *src)
 {

src/bacnet/basic/service/h_ts.h

@@ -48,10 +48,6 @@ typedef void (*handler_timesync_set_callback_t)(
 extern "C" {
 #endif /* __cplusplus */
 
-    BACNET_STACK_EXPORT
-    int32_t handler_timesync_offset(void);
-    BACNET_STACK_EXPORT
-    void handler_timesync_offset_set(int32_t offset);
     /* time synchronization handlers */
     BACNET_STACK_EXPORT
     void handler_timesync(