Trace start- and stop breakpoints with ETM

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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