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TM4C1231H6PZI suddenly LOCK after some time while running blink program ...

Yashpal Patel49892
Expert 1835 points

Hi,


I using TM4C1231H6PZI in my customized board for one of my project, in this when I download blinky program through LMFLASH programmer.

At starting it is working and LED blink on my board, but after 1 minute stop the LED blink and micro-controller LOCK.

again same after unlock the micro-controller through LMFLASH programmer and again download the blinky program through LMFLASH programmer it working and same Happen....... LOCK the micro-controller.

Anybody help to solve this problem.


Regards,

Dharmendra

  • 0
    Guru 27285 points
    Teh only answer with data we read here is NO!.
    - Please provide full project of blinky and if you recompiled for correct target.
    - schematic of your board ( at almost power supply and all around processor)
    - capacitor on internal regulator is ok.
    - interface are you using.
    Connect by debug and see what happen to code.
    What mean term LOCK.

    -- Last and not least PLEASE don't use imperative form!!! So before to proceed solve this sounding as offensive ---
  • 0 in reply to Roberto Romano
    Guru 117855 points

    Roberto Romano said:
    PLEASE don't use imperative form!!!

    At least poster did not order our response as, "Urgent!"  (urgent to whom? - always delightful)

    So now - beginning, imperative posters' expect our "complete debug" of their unique (always under-detailed) HW creations!  

    This cannot end well - "wild west" of "No forum limitation, no enforced rules/regulations" further encourages the all too common (and preventable) "Does not Work!" 

  • 0
    TI__Guru**** 244400 points
    Hello Dharmendra,

    As Roberto mentioned code-schematic-details. What I would suggest is checking if the Main Crystal is well soldered...

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Expert 1835 points

    Dear Amit,

    Thanks for your support, it's working now.

    Regards,

    Dharmendra

  • 0 in reply to Yashpal Patel49892
    TI__Guru**** 244400 points
    Hello Yashpal

    It is working now (good), but what was the issue. It is a good forum habit to report back on the issue as others who run into the issue may find it useful

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Guru 47900 points

    Amit Ashara said:
    It is a good forum habit to report back on the issue

    True that!

    We note (unfortunately) that far more numerous "forum habits" are ongoing posts which detail the issue solely as, "Does not Work!"  

    Perhaps useful to explore "HOW" that results - and "WHY" it's been allowed (for so long)  to persist...

  • 0 in reply to Amit Ashara
    Expert 1835 points
    Hi,
    As you said the main oscillator dry solder in the card.

    Thanks and regards,
    Dharmendra
  • 0 in reply to Yashpal Patel49892
    TI__Guru**** 244400 points
    Hello Yashpal,

    Thanks. Been hurt by the dry solder myself.

    Regards
    Amit
  • 0
    Guru 117855 points

    Yashpal Patel49892 said:

    At starting...works...LED blink...but after 1 minute stop... MCU LOCK.   Again same after unlock...via LMFLASH programmer...again download blinky...it works

    These facts - presented in poster's initial writing - seem not to result from suggested, "bad joint" @ MCU's xtal circuit.  Writing above suggests that (most) times (and that might extend to ALL times) poster's board launches and runs well for some time.  In my group's experience - a bad joint @ MCU xtal circuit - would not exhibit such start-up - and then (1 minute failure) consistency.  How could it?

    Far more random MCU behavior or hiccup would be the "usual result" of such, "dry xtal circuit" joint.  To so consistently start - and then fail after some (repeatable) elapsed time - seems (beyond) any "dry joint."

    It's hoped that the, "desire to clear a post" does not trump vendor's "normal/customary" more thoughtful & considered analysis.  Facts in evidence here - cast most (reasonable) doubt - upon this alleged, "solution."