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Hercules RM48L952ZWT - Force HALT in case of critical Software Error

Tammy Noergaard
Genius 3665 points
Other Parts Discussed in Thread: HALCOGEN

Hello. We are using the Hercules RM48L952ZWT. If we have a critical software error, is there a HalCoGen function call  to force a hard STOP/HALT of the processor?

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    TI__Mastermind 20070 points

    Tammy,

         The CPU continues to fetch instructions on each clock cycle unless it goes to an IDLE state.  However, it is certainly possible to implement a trap (e.g. while(1){}). This trap will stop sequential code execution but will still respond to interrupts.  (Interrupts can also take the device out of the IDLE state.) Also, autonomously running code (e.g. NHET) will continue to run in this case.

         I think the bigger context for answering the question is to define how you know that you have a critical software error. The processor responds to Undefined Instructions as well as prefetch and data aborts. These exceptions are indicative of a critical error, BUT they are not comprehensive.

    Best Regards,

    Kevin Lavery