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TMS320F28379D: F28379 CC Erratic Behaviour

Erol Nikocevic
Prodigy 20 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: TIDA-01606

Tool/software:

I have been running TIDA01606 for a while and it seamed to work OK.
Recently I modified the PWM Drive Module 3L--->2L. It worked fine initially.
As I was working on the ADC Module, the SW started to behave erratically. 
I undid the changes to ADC , still erratic. The PWM waveforms were erratic and not like before stable.
I have enabled the LED Flashing in the TINV_HAL_toggleLED(); B2 State Machine tasks. Now that wone has an erratic behaviour as well.
It used to blink every 1-2 seconds uniformly. Now it blinks once and then several times a second. I then removed the TIDA-01606 altogther 
from the project directory and deleted the content. Reloaded it from Resource Explorer. It is still same behaviour.
Whenever I connect picoscope to the host. This behaviour is present. No Probes on the Control Card. Just picoscope and the CC are powered up from the 
host independently and CC has TIDA-01606 flashed in it. I recycycle everything (even the host computer). Power up the CC, LED bliks uniformly.
I bring up picoscope on the PC, LED is erratic. This behaviour is not present if I use picoscope and the launchpad. Just the CC.
I have used another much smaller program to blink the same LED like TIDA-01606 does. No such behaviour.
Any clue why. It seams to me that somehow F28379 CC is partially damaged , the FLASH. It runs many small projects, though.
Thanks a lot,
Erol Nikocevic
  • 0
    TI__Genius 11495 points

    It seems like your F28379 CC is damaged, or some pins of the MCU is damaged. Pls replace CC and use the original code. I assume your power h/w is ok

  • +1 in reply to Shamim Choudhury
    Prodigy 20 points

    Hi Shamim,

    Thank you very much for the very quick reply !

    I have been using the F28379 CC Card and docking station only with my laptop , hence no electrical external electrical stress, other then potential ESD which is life reailty. I have been using these TI kits at home for 20 years now and never had an ESD failure (I think TI kits and chips have nice R-D ESD protection). That's why I ignored the ESD precautions and measures. However, ESD is part of our lives ((discharge buzes and arcs and burns of our fingers which poor small kits and chips cannot handle easily). I still believe that this card might have a problem with FLASH, though. When you read my description of the failure below . One program turns the PIN OK . The other is OK as long as picoscope is not active. Still, some basic ESD protection like below is a must.

    I will take you advice and use a new CC , though

    Thanks a lot,

    Erol