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TMS570LC4357: How do I generate a Lockstep error while my application is running so that I can check if the ERRFLAG bit is set in the MPUERRSTAT register?

Robert Barton1
Prodigy 40 points
Part Number: TMS570LC4357


Have a requirement to check for a lockstep error for a flight safety application.  How do I generate a Lockstep error while my application is running so that I can perform unit test to check if the ERRFLAG bit is set in the MPUERRSTAT register?

  • 0
    TI__Mastermind 49120 points

    Hi Robert,

    The CPU lockstep core compare module (CCM) allows you to force a compare error in order to verify the signaling mechanism. Please refer to the CCM chapter in the reference manual for more details about this error-forcing mode.

    The MPUERRSTAT flag is related to a separate safety mechanism and can be generated by deliberately violating memory access privilege constraints configured via the different memory protection units (MPU).

    Regards, Sunil