PX4 Timestamp

R2026b

Output absolute timestamp from the PX4 Autopilot to a Simulink model

Since R2023b

• 

PX4 Timestamp block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
UAV Toolbox Support Package for PX4 Autopilots / PX4 Utility Blocks

Description

Add-On Required: This feature requires the UAV Toolbox Support Package for PX4 Autopilots add-on.

The PX4 timestamp block gets the time since start in microseconds from the PX4 Autopilot into the Simulink^® Model. This timestamp information is absolute, ensuring it never wraps or goes backwards. The output datatype of timestamp is uint64.

Examples

Log Simulink Signals Using PX4 ULog

Log signals in ULog format from a Simulink® model running on a Pixhawk® hardware and retrieve the log files from the SD card for further analysis.

• Open Model

Ports

Output

Timestamp — Absolute timestamp

uint64

Absolute timestamp from the PX4 Autopilot, returned as uint64.

Data Types: uint64

Parameters

Sample time — Interval at which the block reads values

0.01 (default) | any non-negative value that is a multiple of 0.01 | -1

Enter the time interval at which the block reads values from the Pixhawk Autopilot.

When you set this parameter to -1, Simulink determines the best sample time for the block based on the block context within the model.

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"px4Utilslib/PX4 Write Thrust & Torque Setpoint"

Example: add_block("px4Utilslib/PX4 Write Thrust & Torque Setpoint","myModel/myBlock",MakeNameUnique="on")

Version History

Introduced in R2023b