Add BAT_EMERGEN_THR

src/AutoPilotPlugins/PX4/SafetyComponent.qml

@@ -170,7 +170,7 @@ SetupPage {
                         mipmap:                 true
                         fillMode:               Image.PreserveAspectFit
                         source:                 qgcPal.globalTheme === qgcPal.Light ? "/qmlimages/LowBatteryLight.svg" : "/qmlimages/LowBattery.svg"
-                        Layout.rowSpan:     3
+                        Layout.rowSpan:         4
                         Layout.maximumWidth:    _imageWidth
                         Layout.maximumHeight:   _imageHeight
                         width:                  _imageWidth
@@ -204,6 +204,15 @@ SetupPage {
                         fact:                   controller.getParameterFact(-1, "BAT_CRIT_THR")
                         Layout.minimumWidth:    _editFieldWidth
                     }
+
+                    QGCLabel {
+                        text:               qsTr("Battery Emergency Level:")
+                        Layout.fillWidth:   true
+                    }
+                    FactTextField {
+                        fact:                   controller.getParameterFact(-1, "BAT_EMERGEN_THR")
+                        Layout.minimumWidth:    _editFieldWidth
+                    }
                 }
 
                 Item { width: 1; height: _margins; Layout.columnSpan: 3 }