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TI Home » TI E2E Community » Support Forums » Microcontrollers » Hercules™ Safety Microcontrollers » Hercules™ Safety Microcontrollers Forum » Performance Monitor Unit (PMU) in safety context?
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Performance Monitor Unit (PMU) in safety context?

Performance Monitor Unit (PMU) in safety context?

This question is answered
Vaclav Cechticky
Posted by Vaclav Cechticky
on Feb 29 2012 03:38 AM
Intellectual550 points
Hello,
Is Performance Monitor Unit (PMU) foreseen also e.g. for realization of interrupt period 
monitoring, where the interrupt is executing safety functions or is PMU usage expected
more for debugging and profiling purposes?
Thanks
Vaclav
PMU
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  • Vaclav Cechticky
    Posted by Vaclav Cechticky
    on Feb 29 2012 04:24 AM
    Verified Answer
    Verified by Vaclav Cechticky
    Intellectual550 points

    I just found the answer in spnu511a.pdf (Safety Manual for TMS570LS31x/21x and RM48x Hercules™ ARM® Safety Critical Microcontrollers)

    - page 26, section 5.7.4

    Regards

     Vaclav

    PMU
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  • Brian Fortman
    Posted by Brian Fortman
    on Feb 29 2012 07:15 AM
    Expert5255 points

    Thanks for posting and verifying your answer, sir!

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  • KGreb
    Posted by KGreb
    on Feb 29 2012 08:29 AM
    Verified Answer
    Verified by Vaclav Cechticky
    Expert5865 points

    Hi Vaclav,

    As noted in the safety manual, the primary function of the PMU is for profiling code.  While it was intended for development purposes, it is also possible to use the PMU to perform a plausibility check on proper CPU operation.

    Regards,

    Karl

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  • Vaclav Cechticky
    Posted by Vaclav Cechticky
    on Feb 29 2012 09:15 AM
    Intellectual550 points

    Hi Karl,

    Thank you very much for the reply. Excellent, it clarified the topic for me.

    Regards

     Vaclav

    PMU
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