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docs/en/msg_docs/DifferentialPressure.md
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@@ -1,11 +1,32 @@
---
pageClass: is-wide-page
---
# DifferentialPressure (UORB message)
Differential-pressure (airspeed) sensor
Differential-pressure (airspeed) sensor.
This is populated by airspeed sensor drivers and used by the sensor module to calculate airspeed.
The information is published in the `SCALED_PRESSURE_n` MAVLink messages (along with information from a corresponding `SensorBaro` instance).
[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/DifferentialPressure.msg)
**TOPICS:** differential_pressure
## Fields
| Name | Type | Unit [Frame] | Range/Enum | Description |
| ------------------------ | --------- | ------------ | ---------- | ------------------------------------------------------------------------- |
| timestamp | `uint64` | us | | Time of publication (since system start) |
| timestamp_sample | `uint64` | us | | Time of raw data capture |
| device_id | `uint32` | | | Unique device ID for the sensor that does not change between power cycles |
| differential_pressure_pa | `float32` | Pa | | Differential pressure reading (may be negative) |
| temperature | `float32` | degC | | Temperature (Invalid: NaN if unknown) |
| error_count | `uint32` | | | Number of errors detected by driver |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/DifferentialPressure.msg)
::: details Click here to see original file
```c
# Differential-pressure (airspeed) sensor
@@ -20,5 +41,6 @@ uint32 device_id # [-] Unique device ID for the sensor that doe
float32 differential_pressure_pa # [Pa] Differential pressure reading (may be negative)
float32 temperature # [degC] [@invalid NaN if unknown] Temperature
uint32 error_count # [-] Number of errors detected by driver
```
:::