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Self diagnosis routine for an embedded system

Yu Zhang10589
Expert 1100 points

Hi all:

Anyone has any ideas how to start writing a self diagnosis routine for an embedded system?

Thank you

  • 0
    Prodigy 220 points

    Are you asking for a BIST (built-in-self-test)?

  • 0 in reply to Padfoot Black
    Expert 1100 points

    Sorry not sure what BIST is. I have been looking for an answer.

     

    What I have in mind is:

    Upon start up, my device will check all external memory and external peripherals. If anything goes wrong, on a LCD, it display a message.

     

    Thanks

  • 0 in reply to Yu Zhang10589
    TI__Guru 64920 points

    Yu Zhang said:

    Sorry not sure what BIST is. I have been looking for an answer.

    BIST stands for Built In Self Test.  Essentially a term for what you are requesting input on.

     

    Yu Zhang said:

    What I have in mind is:

    Upon start up, my device will check all external memory and external peripherals. If anything goes wrong, on a LCD, it display a message.

    Yes, generally this is what can be done to verify the product is functioning as intended.  In addition, any tests of internal memory, checksums on program code, etc. are some typical things to do.

  • 0
    Expert 1655 points

    Hi,

    are you asking for approvals for compliance with the requirements of the IEC 60730-1/60335-1 safety standards? That means self-diagnostic modules for the CPU, non-volatile memory (Flash or ROM), RAM, and the system clock frequency?

    Other companys (i.e. a japanese company which anounced a merge with another japanese manufacturer) have such libraries available for there MCUs; will TI provide fully certified IEC software libraries for the MSP430 too?

    Rgds
    G**kbuster

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