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docs/en/msg_docs/VehicleLandDetected.md
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@@ -1,8 +1,40 @@
---
pageClass: is-wide-page
---
# VehicleLandDetected (UORB message)
**TOPICS:** vehicle_landdetected
## Fields
[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/VehicleLandDetected.msg)
| Name | Type | Unit [Frame] | Range/Enum | Description |
| -------------------------------- | -------- | ------------ | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| freefall | `bool` | | | true if vehicle is currently in free-fall |
| ground_contact | `bool` | | | true if vehicle has ground contact but is not landed (1. stage) |
| maybe_landed | `bool` | | | true if the vehicle might have landed (2. stage) |
| landed | `bool` | | | true if vehicle is currently landed on the ground (3. stage) |
| in_ground_effect | `bool` | | | indicates if from the perspective of the landing detector the vehicle might be in ground effect (baro). This flag will become true if the vehicle is not moving horizontally and is descending (crude assumption that user is landing). |
| in_descend | `bool` | | |
| has_low_throttle | `bool` | | |
| vertical_movement | `bool` | | |
| horizontal_movement | `bool` | | |
| rotational_movement | `bool` | | |
| close_to_ground_or_skipped_check | `bool` | | |
| at_rest | `bool` | | |
## Constants
| Name | Type | Value | Description |
| ----------------------------------------------- | -------- | ----- | ----------- |
| <a href="#MESSAGE_VERSION"></a> MESSAGE_VERSION | `uint32` | 0 |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/VehicleLandDetected.msg)
::: details Click here to see original file
```c
uint32 MESSAGE_VERSION = 0
@@ -26,5 +58,6 @@ bool rotational_movement
bool close_to_ground_or_skipped_check
bool at_rest
```
:::