give timing feedback to the user.
Context
To help real-time implementation, we would like to give some feedback in term of cpu load for the user.
Description
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at least we would like to give cpu time consuming for the "control loop" task (non preemptive and most critical task). using the Zephyr kernel execution time functions.
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but it would be interesting to investigate on runtime statistics
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send this information on the serial port ? (TBC)