autogenerated headers for rev...

autogenerated headers for rev https://github.com/mavlink/mavlink/tree/490c482813e529396d0ea2e53fb533f671b86a96

ASLUAV/ASLUAV.h

@@ -44,7 +44,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -57,7 +57,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_PATHPLANNING=81, /* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */

ardupilotmega/ardupilotmega.h

@@ -59,7 +59,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -73,7 +73,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_ALTITUDE_WAIT=83, /* Mission command to wait for an altitude or downwards vertical speed. This is meant for high altitude balloon launches, allowing the aircraft to be idle until either an altitude is reached or a negative vertical speed is reached (indicating early balloon burst). The wiggle time is how often to wiggle the control surfaces to prevent them seizing up. |altitude (m)| descent speed (m/s)| Wiggle Time (s)| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */

autoquad/autoquad.h

@@ -88,7 +88,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -101,7 +101,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_PATHPLANNING=81, /* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */

common/common.h

@@ -396,7 +396,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -409,7 +409,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_PATHPLANNING=81, /* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */

matrixpilot/matrixpilot.h

@@ -61,7 +61,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -74,7 +74,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_PATHPLANNING=81, /* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */

message_definitions/common.xml

@@ -708,7 +708,7 @@
         <param index="4">Desired yaw angle. NaN for unchanged.</param>
         <param index="5">Latitude</param>
         <param index="6">Longitude</param>
-        <param index="7">Altitude</param>
+        <param index="7">Altitude (ground level)</param>
       </entry>
       <entry value="22" name="MAV_CMD_NAV_TAKEOFF">
         <description>Takeoff from ground / hand</description>
@@ -834,11 +834,11 @@
         <description>Land using VTOL mode</description>
         <param index="1">Empty</param>
         <param index="2">Empty</param>
-        <param index="3">Empty</param>
+        <param index="3">Approach altitude (with the same reference as the Altitude field). NaN if unspecified.</param>
         <param index="4">Yaw angle in degrees. NaN for unchanged.</param>
         <param index="5">Latitude</param>
         <param index="6">Longitude</param>
-        <param index="7">Altitude</param>
+        <param index="7">Altitude (ground level)</param>
       </entry>
       <!-- IDs 90 and 91 are reserved until the end of 2014,
                     as they were used in some conflicting proposals

slugs/slugs.h

@@ -44,7 +44,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_LOITER_TURNS=18, /* Loiter around this MISSION for X turns |Turns| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LOITER_TIME=19, /* Loiter around this MISSION for X seconds |Seconds (decimal)| Empty| Radius around MISSION, in meters. If positive loiter clockwise, else counter-clockwise| Forward moving aircraft this sets exit xtrack location: 0 for center of loiter wp, 1 for exit location. Else, this is desired yaw angle| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_RETURN_TO_LAUNCH=20, /* Return to launch location |Empty| Empty| Empty| Empty| Empty| Empty| Empty|  */
-   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_LAND=21, /* Land at location |Abort Alt| Empty| Empty| Desired yaw angle. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_TAKEOFF=22, /* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer. NaN for unchanged.| Latitude| Longitude| Altitude|  */
    MAV_CMD_NAV_LAND_LOCAL=23, /* Land at local position (local frame only) |Landing target number (if available)| Maximum accepted offset from desired landing position [m] - computed magnitude from spherical coordinates: d = sqrt(x^2 + y^2 + z^2), which gives the maximum accepted distance between the desired landing position and the position where the vehicle is about to land| Landing descend rate [ms^-1]| Desired yaw angle [rad]| Y-axis position [m]| X-axis position [m]| Z-axis / ground level position [m]|  */
    MAV_CMD_NAV_TAKEOFF_LOCAL=24, /* Takeoff from local position (local frame only) |Minimum pitch (if airspeed sensor present), desired pitch without sensor [rad]| Empty| Takeoff ascend rate [ms^-1]| Yaw angle [rad] (if magnetometer or another yaw estimation source present), ignored without one of these| Y-axis position [m]| X-axis position [m]| Z-axis position [m]|  */
@@ -57,7 +57,7 @@ typedef enum MAV_CMD
    MAV_CMD_NAV_PATHPLANNING=81, /* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_SPLINE_WAYPOINT=82, /* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal|  */
    MAV_CMD_NAV_VTOL_TAKEOFF=84, /* Takeoff from ground using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
-   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Empty| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude|  */
+   MAV_CMD_NAV_VTOL_LAND=85, /* Land using VTOL mode |Empty| Empty| Approach altitude (with the same reference as the Altitude field). NaN if unspecified.| Yaw angle in degrees. NaN for unchanged.| Latitude| Longitude| Altitude (ground level)|  */
    MAV_CMD_NAV_GUIDED_ENABLE=92, /* hand control over to an external controller |On / Off (> 0.5f on)| Empty| Empty| Empty| Empty| Empty| Empty|  */
    MAV_CMD_NAV_DELAY=93, /* Delay the next navigation command a number of seconds or until a specified time |Delay in seconds (decimal, -1 to enable time-of-day fields)| hour (24h format, UTC, -1 to ignore)| minute (24h format, UTC, -1 to ignore)| second (24h format, UTC)| Empty| Empty| Empty|  */
    MAV_CMD_NAV_PAYLOAD_PLACE=94, /* Descend and place payload.  Vehicle descends until it detects a hanging payload has reached the ground, the gripper is opened to release the payload |Maximum distance to descend (meters)| Empty| Empty| Empty| Latitude (deg * 1E7)| Longitude (deg * 1E7)| Altitude (meters)|  */