update GPSStatus to use Position struct atomically (#885)

src/GPSStatus.h

@@ -19,28 +19,39 @@ class GPSStatus : public Status
 
     bool hasLock = false;                // default to false, until we complete our first read
     bool isConnected = false;            // Do we have a GPS we are talking to
-    int32_t latitude = 0, longitude = 0; // as an int mult by 1e-7 to get value as double
-    int32_t altitude = 0;
-    uint32_t dop = 0; // Diminution of position; PDOP where possible (UBlox), HDOP otherwise (TinyGPS) in 10^2 units (needs
-                      // scaling before use)
-    uint32_t heading = 0;
-    uint32_t numSatellites = 0;
+
+    Position p = Position_init_default;
 
   public:
     GPSStatus() { statusType = STATUS_TYPE_GPS; }
+
+    // proposed for deprecation
     GPSStatus(bool hasLock, bool isConnected, int32_t latitude, int32_t longitude, int32_t altitude, uint32_t dop,
               uint32_t heading, uint32_t numSatellites)
         : Status()
     {
         this->hasLock = hasLock;
         this->isConnected = isConnected;
-        this->latitude = latitude;
-        this->longitude = longitude;
-        this->altitude = altitude;
-        this->dop = dop;
-        this->heading = heading;
-        this->numSatellites = numSatellites;
+
+        this->p.latitude_i = latitude;
+        this->p.longitude_i = longitude;
+        this->p.altitude = altitude;
+        this->p.PDOP = dop;
+        this->p.ground_track = heading;
+        this->p.sats_in_view = numSatellites;
     }
+
+    // preferred method
+    GPSStatus(bool hasLock, bool isConnected, Position pos)
+        : Status()
+    {
+        this->hasLock = hasLock;
+        this->isConnected = isConnected;
+
+        // all-in-one struct copy
+        this->p = pos;
+    }
+
     GPSStatus(const GPSStatus &);
     GPSStatus &operator=(const GPSStatus &);
 
@@ -56,7 +67,7 @@ class GPSStatus : public Status
             NodeInfo *node = nodeDB.getNode(nodeDB.getNodeNum());
             return node->position.latitude_i;
         } else {
-            return latitude;
+            return p.latitude_i;
         }
     }
 
@@ -66,7 +77,7 @@ class GPSStatus : public Status
             NodeInfo *node = nodeDB.getNode(nodeDB.getNodeNum());
             return node->position.longitude_i;
         } else {
-            return longitude;
+            return p.longitude_i;
         }
     }
 
@@ -76,22 +87,27 @@ class GPSStatus : public Status
             NodeInfo *node = nodeDB.getNode(nodeDB.getNodeNum());
             return node->position.altitude;
         } else {
-            return altitude;
+            return p.altitude;
         }
     }
 
+    uint32_t getDOP() const { return p.PDOP; }
 
-    uint32_t getDOP() const { return dop; }
+    uint32_t getHeading() const { return p.ground_track; }
 
-    uint32_t getHeading() const { return heading; }
-
-    uint32_t getNumSatellites() const { return numSatellites; }
+    uint32_t getNumSatellites() const { return p.sats_in_view; }
 
     bool matches(const GPSStatus *newStatus) const
     {
-        return (newStatus->hasLock != hasLock || newStatus->isConnected != isConnected || newStatus->latitude != latitude ||
-                newStatus->longitude != longitude || newStatus->altitude != altitude || newStatus->dop != dop ||
-                newStatus->heading != heading || newStatus->numSatellites != numSatellites);
+        return (newStatus->hasLock != hasLock ||
+                newStatus->isConnected != isConnected ||
+                newStatus->p.latitude_i != p.latitude_i ||
+                newStatus->p.longitude_i != p.longitude_i ||
+                newStatus->p.altitude != p.altitude ||
+                newStatus->p.altitude_hae != p.altitude_hae ||
+                newStatus->p.PDOP != p.PDOP ||
+                newStatus->p.ground_track != p.ground_track ||
+                newStatus->p.sats_in_view != p.sats_in_view);
     }
     int updateStatus(const GPSStatus *newStatus)
     {
@@ -102,17 +118,15 @@ class GPSStatus : public Status
             initialized = true;
             hasLock = newStatus->hasLock;
             isConnected = newStatus->isConnected;
-            latitude = newStatus->latitude;
-            longitude = newStatus->longitude;
-            altitude = newStatus->altitude;
-            dop = newStatus->dop;
-            heading = newStatus->heading;
-            numSatellites = newStatus->numSatellites;
+
+            p = newStatus->p;
         }
         if (isDirty) {
             if (hasLock)
-                DEBUG_MSG("New GPS pos lat=%f, lon=%f, alt=%d, pdop=%f, heading=%f, sats=%d\n", latitude * 1e-7, longitude * 1e-7,
-                          altitude, dop * 1e-2, heading * 1e-5, numSatellites);
+                DEBUG_MSG("New GPS pos lat=%f, lon=%f, alt=%d, pdop=%.2f, heading=%.2f, sats=%d\n", 
+                            p.latitude_i * 1e-7, p.longitude_i * 1e-7,
+                            p.altitude, p.PDOP * 1e-2, p.ground_track * 1e-5, 
+                            p.sats_in_view);
             else
                 DEBUG_MSG("No GPS lock\n");
             onNewStatus.notifyObservers(this);