Automatic UDP Link Configuration

src/comm/LinkManager.cc

@@ -357,6 +357,8 @@ void LinkManager::saveLinkConfigurationList()
 
 void LinkManager::loadLinkConfigurationList()
 {
+    bool udpExists = false;
+    bool linksChanged = false;
     QSettings settings;
     // Is the group even there?
     if(settings.contains(LinkConfiguration::settingsRoot() + "/count")) {
@@ -402,6 +404,14 @@ void LinkManager::loadLinkConfigurationList()
                                 // Have the instance load its own values
                                 pLink->loadSettings(settings, root);
                                 addLinkConfiguration(pLink);
+                                linksChanged = true;
+                                // Check for UDP links
+                                if(pLink->type() == LinkConfiguration::TypeUdp) {
+                                    UDPConfiguration* uLink = dynamic_cast<UDPConfiguration*>(pLink);
+                                    if(uLink && uLink->localPort() == QGC_UDP_LOCAL_PORT) {
+                                        udpExists = true;
+                                    }
+                                }
                             }
                         } else {
                             qWarning() << "Link Configuration " << root << " has an empty name." ;
@@ -416,7 +426,6 @@ void LinkManager::loadLinkConfigurationList()
                 qWarning() << "Link Configuration " << root << " has no type." ;
             }
         }
-        emit linkConfigurationChanged();
     }
     
     // Debug buids always add MockLink automatically
@@ -424,10 +433,22 @@ void LinkManager::loadLinkConfigurationList()
     MockConfiguration* pMock = new MockConfiguration("Mock Link");
     pMock->setDynamic(true);
     addLinkConfiguration(pMock);
-    emit linkConfigurationChanged();
+    linksChanged = true;
 #endif
 
-    // Enable automatic PX4 hunting
+    //-- If we don't have a configured UDP link, create a default one
+    if(!udpExists) {
+        UDPConfiguration* uLink = new UDPConfiguration("Default UDP Link");
+        uLink->setLocalPort(QGC_UDP_LOCAL_PORT);
+        uLink->setDynamic();
+        addLinkConfiguration(uLink);
+        linksChanged = true;
+    }
+    
+    if(linksChanged) {
+        emit linkConfigurationChanged();
+    }
+    // Enable automatic Serial PX4/3DR Radio hunting
     _configurationsLoaded = true;
 }
 

src/ui/QGCCommConfiguration.cc

@@ -190,4 +190,7 @@ void QGCCommConfiguration::on_nameEdit_textEdited(const QString &arg1)
 {
     Q_UNUSED(arg1);
     _updateUI();
+    if(_config) {
+        _config->setDynamic(false);
+    }
 }

src/ui/QGCLinkConfiguration.cc

@@ -225,9 +225,14 @@ void QGCLinkConfiguration::_updateButtons()
     LinkConfiguration* config = NULL;
     QModelIndex index = _ui->linkView->currentIndex();
     bool enabled = (index.row() >= 0);
+    bool deleteEnabled = true;
     if(enabled) {
         config = _viewModel->getConfiguration(index.row());
         if(config) {
+            // Can't delete a dynamic link
+            if(config->isDynamic()) {
+                deleteEnabled = false;
+            }
             LinkInterface* link = config->getLink();
             if(link) {
                 _ui->connectLinkButton->setText("Disconnect");
@@ -237,7 +242,7 @@ void QGCLinkConfiguration::_updateButtons()
         }
     }
     _ui->connectLinkButton->setEnabled(enabled);
-    _ui->delLinkButton->setEnabled(config != NULL);
+    _ui->delLinkButton->setEnabled(config != NULL && deleteEnabled);
     _ui->editLinkButton->setEnabled(config != NULL);
 }
 

src/ui/QGCUDPLinkConfiguration.cc

@@ -90,6 +90,7 @@ void QGCUDPLinkConfiguration::on_portNumber_valueChanged(int arg1)
 {
     if(!_inConstructor) {
         _config->setLocalPort(arg1);
+        _config->setDynamic(false);
     }
 }