Trace start- and stop breakpoints with ETM

Technical Note 14806

Targets:
ARM

Component:
Debugger

Updated:
9/9/2013 8:34 AM

Introduction

Trace start/stop breakpoints are only for ETM/ETB trace. Not for SWO trace.

Probe vs ETM/ETB

Trace start/stop breakpoints can be used with:

  1. I-jet-Trace if the target CPU supports ETM or ETB trace.
  2. I-jet if the target CPU supports ETB trace.
  3. J-Trace if the target CPU supports ETM or ETB trace.
  4. J-Link if the target CPU supports ETB trace.
  5. CMSIS-DAP if the target CPU supports ETB trace.

Note

As of IAR Embedded Workbench for ARM version 6.60, there is a misleading error message "User error: Breakpoint type is only available when using J-Trace". It really means that you do not have any of the combinations (3) or (4). The error message has been improved in releases newer than version 6.60.

 

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