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Co-Authored-By: PX4 BuildBot <bot@px4.io>
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2026-02-11 22:43:01 +00:00
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docs/en/msg_docs/LogMessage.md
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@@ -1,8 +1,32 @@
---
pageClass: is-wide-page
---
# LogMessage (UORB message)
A logging message, output with PX4_WARN, PX4_ERR, PX4_INFO
A logging message, output with PX4_WARN, PX4_ERR, PX4_INFO.
[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/LogMessage.msg)
**TOPICS:** log_message
## Fields
| Name | Type | Unit [Frame] | Range/Enum | Description |
| --------- | ----------- | ------------ | ---------- | -------------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| severity | `uint8` | | | log level (same as in the linux kernel, starting with 0) |
| text | `char[127]` | | |
## Constants
| Name | Type | Value | Description |
| ------------------------------------------------- | ------- | ----- | ----------- |
| <a href="#ORB_QUEUE_LENGTH"></a> ORB_QUEUE_LENGTH | `uint8` | 4 |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/LogMessage.msg)
::: details Click here to see original file
```c
# A logging message, output with PX4_WARN, PX4_ERR, PX4_INFO
@@ -13,5 +37,6 @@ uint8 severity # log level (same as in the linux kernel, starting with 0)
char[127] text
uint8 ORB_QUEUE_LENGTH = 4
```
:::