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25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
# DifferentialPressure (UORB message)
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Differential-pressure (airspeed) sensor
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This is populated by airspeed sensor drivers and used by the sensor module to calculate airspeed.
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The information is published in the `SCALED_PRESSURE_n` MAVLink messages (along with information from a corresponding `SensorBaro` instance).
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[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/DifferentialPressure.msg)
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```c
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# Differential-pressure (airspeed) sensor
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#
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# This is populated by airspeed sensor drivers and used by the sensor module to calculate airspeed.
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# The information is published in the `SCALED_PRESSURE_n` MAVLink messages (along with information from a corresponding `SensorBaro` instance).
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uint64 timestamp # [us] Time of publication (since system start)
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uint64 timestamp_sample # [us] Time of raw data capture
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uint32 device_id # [-] Unique device ID for the sensor that does not change between power cycles
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float32 differential_pressure_pa # [Pa] Differential pressure reading (may be negative)
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float32 temperature # [degC] [@invalid NaN if unknown] Temperature
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uint32 error_count # [-] Number of errors detected by driver
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```
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