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ULINK: Trace: No Synchronization

Information in this knowledgebase article applies to:

  • MDK Version 5
  • ULINK-Pro


When using trace with ULINK-pro, the status bar shows the message Trace: Running... alternating with Trace: No Synchronization. However the tracing seems to work in general.


This problem might be caused by an incorrect configuration of the Core Clock in the trace setup.


Select Project - Options - Debug - Settings the Cortex-M Target Driver Setup dialog for ULINK-pro. Then verify in the Trace tab that the setting for Core Clock matches the actual processor core clock of your target system.



Last Reviewed: Tuesday, April 4, 2017

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