wip gps power fixes #376

src/gps/NMEAGPS.h

@@ -14,10 +14,29 @@ class NMEAGPS : public GPS
 {
     TinyGPSPlus reader;
 
-    uint32_t lastUpdateMsec = 0;
-
   public:
     virtual bool setup();
 
-    virtual void loop();
+  protected:
+    /** Subclasses should look for serial rx characters here and feed it to their GPS parser
+     * 
+     * Return true if we received a valid message from the GPS
+    */
+    virtual bool whileIdle();
+
+    /**
+     * Perform any processing that should be done only while the GPS is awake and looking for a fix.
+     * Override this method to check for new locations
+     *
+     * @return true if we've acquired a time
+     */
+    virtual bool lookForTime();
+
+    /**
+     * Perform any processing that should be done only while the GPS is awake and looking for a fix.
+     * Override this method to check for new locations
+     *
+     * @return true if we've acquired a new location
+     */
+    virtual bool lookForLocation();
 };