Support both THR_MID and MOT_THST_HOVER

src/AutoPilotPlugins/APM/APMTuningComponentCopter.qml

@@ -26,7 +26,13 @@ QGCView {
 
     QGCPalette { id: palette; colorGroupEnabled: enabled }
 
-    property Fact _throttleMid: controller.getParameterFact(-1, "THR_MID")
+    // Older firmwares use THR_MODE, newer use MOT_THST_HOVER
+    property bool _throttleMidExists: controller.parameterExists(-1, "THR_MID")
+    property Fact _hoverTuneParam:  controller.getParameterFact(-1, _throttleMidExists ? "THR_MID" : "MOT_THST_HOVER")
+    property real _hoverTuneMin:    _throttleMidExists ? 200 : 0
+    property real _hoverTuneMax:    _throttleMidExists ? 800 : 1
+    property real _hoverTuneStep:   _throttleMidExists ? 10 : 0.01
+
     property Fact _rcFeel:          controller.getParameterFact(-1, "RC_FEEL_RP")
     property Fact _rateRollP:       controller.getParameterFact(-1, "r.ATC_RAT_RLL_P")
     property Fact _rateRollI:       controller.getParameterFact(-1, "r.ATC_RAT_RLL_I")
@@ -63,7 +69,7 @@ QGCView {
         // handler which updates your property with the new value, this first value change will trash
         // your bound values. In order to work around this we don't set the values into the Sliders until
         // after Qml load is done. We also don't track value changes until Qml load completes.
-        throttleHover.value = _throttleMid.value
+        throttleHover.value = _hoverTuneParam.value
         rollPitch.value = _rateRollP.value
         climb.value = _rateClimbP.value
         rcFeel.value = _rcFeel.value
@@ -159,14 +165,14 @@ QGCView {
                             id:                 throttleHover
                             anchors.left:       parent.left
                             anchors.right:      parent.right
-                            minimumValue:       200
-                            maximumValue:       800
-                            stepSize:           10.0
+                            minimumValue:       _hoverTuneMin
+                            maximumValue:       _hoverTuneMax
+                            stepSize:           _hoverTuneStep
                             tickmarksEnabled:   true
 
                             onValueChanged: {
                                 if (_loadComplete) {
-                                    _throttleMid.value = value
+                                    _hoverTuneParam.value = value
                                 }
                             }
                         }