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AutoFocus User’s Guide
44
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Protocol Check
Detailed trace data analysis is possible, if detailed information about the trace protocol is available. The
following are examples for the ETM.
•
ETMv1.x
•
ETMv3.x
ETMv1.x
If the basic check was completed and the trace results are still not error-free, the following procedure might
help you determine the source of the error. By manually disassembling the captured trace data (for a single
step), you might notice swapped pins or data channels that might have timing issues.
To check the ETM trace signals - ETMv1.x:
1.
Run the command
Trace.List TS PS2 PS1 PS0 TPH TPL
to display the captured trace data in a
Trace.List
window:
Electrical measurements must be done by trained personal only. Special care has
to be taken concerning electrostatic discharge.
The target must run and the trace has to be armed during electrical measurements
to ensure trace port activity.
ETMv1 signal
Description
TS
Trace sync signals are synchronization points for the TRACE32
software. Invalid states will cause Harderrors and Flowerrors
Example: 16bit ETMv1.x port