allow TimeOfWeek to be sourced from basic NAV

HPPOS isn't necessary to get the iTOW, which is a nice substitute for both a generic epoch and a 'time since last valid communication' from the library (because of #40 and #46).

Author: tedder

src/SparkFun_Ublox_Arduino_Library.cpp

@@ -601,6 +601,7 @@ void SFE_UBLOX_GPS::processUBXpacket(ubxPacket *msg)
       //Parse various byte fields into global vars
       constexpr int startingSpot = 0; //fixed value used in processUBX
 
+      timeOfWeek = extractLong(0);
       gpsMillisecond = extractLong(0) % 1000; //Get last three digits of iTOW
       gpsYear = extractInt(4);
       gpsMonth = extractByte(6);
@@ -655,14 +656,14 @@ void SFE_UBLOX_GPS::processUBXpacket(ubxPacket *msg)
       verticalAccuracy = extractLong(32);
 
       highResModuleQueried.all = true;
-      highResModuleQueried.timeOfWeek = true;
       highResModuleQueried.highResLatitude = true;
       highResModuleQueried.highResLongitude = true;
       highResModuleQueried.elipsoid = true;
       highResModuleQueried.meanSeaLevel = true;
       highResModuleQueried.geoidSeparation = true;
       highResModuleQueried.horizontalAccuracy = true;
       highResModuleQueried.verticalAccuracy = true;
+      moduleQueried.timeOfWeek = true; // this can arrive here too.
 
       if (_printDebug == true)
       {
@@ -1781,12 +1782,13 @@ boolean SFE_UBLOX_GPS::getPVT(uint16_t maxWait)
 
 uint32_t SFE_UBLOX_GPS::getTimeOfWeek(uint16_t maxWait /* = 250*/)
 {
-  if (highResModuleQueried.timeOfWeek == false)
-    getHPPOSLLH();
-  highResModuleQueried.timeOfWeek = false; //Since we are about to give this to user, mark this data as stale
+  if (moduleQueried.gpsiTOW == false)
+    getPVT();
+  moduleQueried.gpsiTOW = false; //Since we are about to give this to user, mark this data as stale
   return (timeOfWeek);
 }
 
+
 int32_t SFE_UBLOX_GPS::getHighResLatitude(uint16_t maxWait /* = 250*/)
 {
   if (highResModuleQueried.highResLatitude == false)