only set time every 60 seconds

linux/devices/GPSHyperionLinuxController.cpp

@@ -16,7 +16,9 @@ GPSHyperionLinuxController::GPSHyperionLinuxController(object_id_t objectId, obj
     : ExtendedControllerBase(objectId, objects::NO_OBJECT),
       gpsSet(this),
       myGpsmm(GPSD_SHARED_MEMORY, nullptr),
-      debugHyperionGps(debugHyperionGps) {}
+      debugHyperionGps(debugHyperionGps) {
+  timeUpdateCd.resetTimer();
+}
 
 GPSHyperionLinuxController::~GPSHyperionLinuxController() {}
 
@@ -180,10 +182,11 @@ void GPSHyperionLinuxController::readGpsDataFromGpsd() {
     timeIsConstantCounter = 0;
   }
   // If the received time does not change anymore for whatever reason, do not set it here
-  // to avoid stale times
-  if(timeIsConstantCounter < 3) {
+  // to avoid stale times. Also, don't do it too often often to avoid jumping times
+  if (timeIsConstantCounter < 3 and timeUpdateCd.hasTimedOut()) {
     // Update the system time here for now. NTP seems to be unable to do so for whatever reason
     settimeofday(&time, nullptr);
+    timeUpdateCd.resetTimer();
   }
 
   Clock::TimeOfDay_t timeOfDay = {};

linux/devices/GPSHyperionLinuxController.h

@@ -52,6 +52,7 @@ class GPSHyperionLinuxController : public ExtendedControllerBase {
   gpsmm myGpsmm;
   bool debugHyperionGps = false;
   uint32_t timeIsConstantCounter = 0;
+  Countdown timeUpdateCd = Countdown(60);
 
   void readGpsDataFromGpsd();
 };