Change function name *changeSpeed to changeSpeedMetersSecond:

Ultimately it sends a MAV_CMD_DO_CHANGE_SPEED in meters
per second, so it is clearer if we have this name for the
function, could help avoiding confusion in the future

src/FirmwarePlugin/APM/APMFirmwarePlugin.cc

@@ -1162,7 +1162,7 @@ bool APMFirmwarePlugin::fixedWingAirSpeedLimitsAvailable(Vehicle* vehicle)
            vehicle->parameterManager()->parameterExists(FactSystem::defaultComponentId, "ARSPD_FBW_MAX");
 }
 
-void APMFirmwarePlugin::guidedModeChangeEquivalentAirspeed(Vehicle* vehicle, double airspeed_equiv)
+void APMFirmwarePlugin::guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle* vehicle, double airspeed_equiv)
 {
 
     vehicle->sendMavCommand(

src/FirmwarePlugin/APM/APMFirmwarePlugin.h

@@ -83,7 +83,7 @@ public:
     double              maximumEquivalentAirspeed       (Vehicle* vehicle) override;
     double              minimumEquivalentAirspeed       (Vehicle* vehicle) override;
     bool                fixedWingAirSpeedLimitsAvailable(Vehicle* vehicle) override;
-    void                guidedModeChangeEquivalentAirspeed(Vehicle* vehicle, double airspeed_equiv) override;
+    void                guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle* vehicle, double airspeed_equiv) override;
 
 protected:
     /// All access to singleton is through stack specific implementation

src/FirmwarePlugin/FirmwarePlugin.cc

@@ -276,14 +276,14 @@ void FirmwarePlugin::guidedModeChangeAltitude(Vehicle*, double, bool pauseVehicl
 }
 
 void
-FirmwarePlugin::guidedModeChangeGroundSpeed(Vehicle*, double)
+FirmwarePlugin::guidedModeChangeGroundSpeedMetersSecond(Vehicle*, double)
 {
     // Not supported by generic vehicle
     qgcApp()->showAppMessage(guided_mode_not_supported_by_vehicle);
 }
 
 void
-FirmwarePlugin::guidedModeChangeEquivalentAirspeed(Vehicle*, double)
+FirmwarePlugin::guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle*, double)
 {
     // Not supported by generic vehicle
     qgcApp()->showAppMessage(guided_mode_not_supported_by_vehicle);

src/FirmwarePlugin/FirmwarePlugin.h

@@ -180,11 +180,11 @@ public:
 
         /// Command vehicle to change groundspeed
     ///     @param groundspeed Groundspeed in m/s
-    virtual void guidedModeChangeGroundSpeed(Vehicle* vehicle, double groundspeed);
+    virtual void guidedModeChangeGroundSpeedMetersSecond(Vehicle* vehicle, double groundspeed);
 
     /// Command vehicle to change equivalent airspeed
     ///     @param airspeed_equiv Equivalent airspeed in m/s
-    virtual void guidedModeChangeEquivalentAirspeed(Vehicle* vehicle, double airspeed_equiv);
+    virtual void guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle* vehicle, double airspeed_equiv);
 
     /// Default tx mode to apply to joystick axes
     /// TX modes are as outlined here: http://www.rc-airplane-world.com/rc-transmitter-modes.html

src/FirmwarePlugin/PX4/PX4FirmwarePlugin.cc

@@ -572,7 +572,7 @@ void PX4FirmwarePlugin::guidedModeChangeAltitude(Vehicle* vehicle, double altitu
     }
 }
 
-void PX4FirmwarePlugin::guidedModeChangeGroundSpeed(Vehicle* vehicle, double groundspeed)
+void PX4FirmwarePlugin::guidedModeChangeGroundSpeedMetersSecond(Vehicle* vehicle, double groundspeed)
 {
 
     vehicle->sendMavCommand(
@@ -586,7 +586,7 @@ void PX4FirmwarePlugin::guidedModeChangeGroundSpeed(Vehicle* vehicle, double gro
         NAN, NAN,NAN);                        // param 5-7 unused
 }
 
-void PX4FirmwarePlugin::guidedModeChangeEquivalentAirspeed(Vehicle* vehicle, double airspeed_equiv)
+void PX4FirmwarePlugin::guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle* vehicle, double airspeed_equiv)
 {
 
     vehicle->sendMavCommand(

src/FirmwarePlugin/PX4/PX4FirmwarePlugin.h

@@ -53,8 +53,8 @@ public:
     bool                fixedWingAirSpeedLimitsAvailable(Vehicle* vehicle) override;
     void                guidedModeGotoLocation          (Vehicle* vehicle, const QGeoCoordinate& gotoCoord) override;
     void                guidedModeChangeAltitude        (Vehicle* vehicle, double altitudeRel, bool pauseVehicle) override;
-    void                guidedModeChangeGroundSpeed      (Vehicle* vehicle, double groundspeed) override;
-    void                guidedModeChangeEquivalentAirspeed(Vehicle* vehicle, double airspeed_equiv) override;
+    void                guidedModeChangeGroundSpeedMetersSecond(Vehicle* vehicle, double groundspeed) override;
+    void                guidedModeChangeEquivalentAirspeedMetersSecond(Vehicle* vehicle, double airspeed_equiv) override;
     void                startMission                    (Vehicle* vehicle) override;
     bool                isGuidedMode                    (const Vehicle* vehicle) const override;
     void                initializeVehicle               (Vehicle* vehicle) override;

src/FlightDisplay/GuidedActionsController.qml

@@ -604,9 +604,9 @@ Item {
                 // We need to convert back to m/s as that is what mavlink standard uses for MAV_CMD_DO_CHANGE_SPEED
                 var metersSecondSpeed = QGroundControl.unitsConversion.appSettingsSpeedUnitsToMetersSecond(sliderOutputValue).toFixed(1)
                 if (_activeVehicle.vtolInFwdFlight || _activeVehicle.fixedWing) {
-                   _activeVehicle.guidedModeChangeEquivalentAirspeed(metersSecondSpeed)
+                   _activeVehicle.guidedModeChangeEquivalentAirspeedMetersSecond(metersSecondSpeed)
                 } else {
-                    _activeVehicle.guidedModeChangeGroundSpeed(metersSecondSpeed)
+                    _activeVehicle.guidedModeChangeGroundSpeedMetersSecond(metersSecondSpeed)
                 }
             }
             break

src/Vehicle/Vehicle.cc

@@ -2775,23 +2775,23 @@ void Vehicle::guidedModeChangeAltitude(double altitudeChange, bool pauseVehicle)
 }
 
 void
-Vehicle::guidedModeChangeGroundSpeed(double groundspeed)
+Vehicle::guidedModeChangeGroundSpeedMetersSecond(double groundspeed)
 {
     if (!guidedModeSupported()) {
         qgcApp()->showAppMessage(guided_mode_not_supported_by_vehicle);
         return;
     }
-    _firmwarePlugin->guidedModeChangeGroundSpeed(this, groundspeed);
+    _firmwarePlugin->guidedModeChangeGroundSpeedMetersSecond(this, groundspeed);
 }
 
 void
-Vehicle::guidedModeChangeEquivalentAirspeed(double airspeed)
+Vehicle::guidedModeChangeEquivalentAirspeedMetersSecond(double airspeed)
 {
     if (!guidedModeSupported()) {
         qgcApp()->showAppMessage(guided_mode_not_supported_by_vehicle);
         return;
     }
-    _firmwarePlugin->guidedModeChangeEquivalentAirspeed(this, airspeed);
+    _firmwarePlugin->guidedModeChangeEquivalentAirspeedMetersSecond(this, airspeed);
 }
 
 void Vehicle::guidedModeOrbit(const QGeoCoordinate& centerCoord, double radius, double amslAltitude)

src/Vehicle/Vehicle.h

@@ -378,10 +378,10 @@ public:
 
     /// Command vehicle to change groundspeed
     ///     @param groundspeed Target horizontal groundspeed
-    Q_INVOKABLE void guidedModeChangeGroundSpeed   (double groundspeed);
+    Q_INVOKABLE void guidedModeChangeGroundSpeedMetersSecond(double groundspeed);
     /// Command vehicle to change equivalent airspeed
     ///     @param airspeed Target equivalent airspeed
-    Q_INVOKABLE void guidedModeChangeEquivalentAirspeed   (double airspeed);
+    Q_INVOKABLE void guidedModeChangeEquivalentAirspeedMetersSecond(double airspeed);
 
     /// Command vehicle to orbit given center point
     ///     @param centerCoord Orit around this point