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Unprecedented visibility into the run time behaviour of FreeRTOS applications

  • Main Trace View
  • Signal Plot View
  • Object History View
  • Tiled Views
  • CPU Load Graph
  • RTOS Object History
  • Object Utilisation

A Selection of the 20+ Graphically Interconnected Views
Click an image to enlarge

FreeRTOS+Trace information video


RTOS trace tools


- Compare Free, Standard and Premium Editions -
- Evaluate in the FreeRTOS Windows Simulator -

FreeRTOS+Trace from Percepio is a run time diagnostic tool for FreeRTOS applications. It captures valuable dynamic behaviour information for offline display in more than twenty graphically interconnected views. The captured information is invaluable when you want to troubleshoot, optimise, or simply analyse the performance of your FreeRTOS based product.

FreeRTOS+Trace can be used side-by-side with a traditional debugger, and complements the debugger's view with a higher level temporal perspective.

Free and Evaluation Editions

FreeRTOS+Trace is available in 3 editions, including a free edition. The premium editions can be evaluated with full functionality for 30 days.


FreeRTOS+Trace has two components - a PC application and a trace logging library. The trace logging library is provided as C source code for easy inclusion in your FreeRTOS project build. The library itself uses the standard FreeRTOS trace macros.

FreeRTOS+Trace obtains trace log files through your existing debugger interface, so does not depend on additional hardware. This makes it suitable for capturing rare errors in deployed hardware that are not easily reproducible in a bench test.

Example Views

Click the links below to see a selection of example FreeRTOS+Trace screen shots. Each image is accompanied with a brief explanation.

Screen Shots of Various FreeRTOS+Trace Graphical Views
Trace view
Demonstration of zooming a trace without loosing focus
CPU loading graph
Communication paths between tasks (and interrupts)
Kernel object history
Kernel object utilisation history
Plotting user signals

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