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LAUNCHXL-F28069M: Microcontroller starts heating after GPIO configuration

NISHA GOSAVI
Expert 1495 points
Part Number: LAUNCHXL-F28069M
Other Parts Discussed in Thread: C2000WARE

Respected Sir,

I am using LAUNCHXL-F28069M launchpad. I have configured GPIO20, GPIO0, and GPIO18 through Matlab Embedded coder. 

After debugging the code into board, the microcontroller gets heated and the operation get halted. I am not getting the actual reason behind this. 

Regards,

Nisha Gosavi

  • 0
    Guru 30330 points
    Nisha,

    Do you have anything connected to the MCU?
    If you use other GPIOs, is the behavior the same?
    Please measure the voltages on the power supply pins after the device halts operations. You can also just put an oscilloscope on the voltage rail to monitor the voltage while the operation progresses.
    Can you use a simple testcase programmed through CCS to recreate the behaviour?

    It sounds like you might have some hardware damage. Check the available voltages on the board - make sure they are correct. You can also check for shorts between the GPIO and Ground. It is possible that a GPIO is damaged and only draws current in a specific configuration. You would not see this unless you put the IO in that mode.

    -Mark
  • 0 in reply to Mark Labbato
    Guru 30330 points
    Nisha,

    Were you able to work through my questions/suggestions? If so, please reply with responses so we can keep this debug moving forward.

    Thanks,
    Mark
  • 0 in reply to Mark Labbato
    Guru 30330 points
    Nisha,

    It has been 10 days since your last post. I am assuming that you were able to resolve your issues. If not, please reply and address the questions i had asked in my first post. Otherwise, once this post locks, you can create a new thread.

    Thanks,
    Mark
  • 0 in reply to Mark Labbato
    Expert 1495 points
    respected sir,

    Our board is damaged. When we connect the board to PC, board starts loading and after few seconds it gets off. We are not confirmed about the reason behind the hardware damage. It is an issue of Electrostatic Discharge ?? or it is the GPIO configuration issue ?

    Nisha
  • 0 in reply to NISHA GOSAVI
    Guru 30330 points

    Nisha.

    In my previous reply I suggested a few techniques to find the issue on your board: http://e2e.ti.com/support/microcontrollers/c2000/f/171/p/761779/2815768#2815768. Were you able to work through any of them? What  were the findings?

    It is very hard to tell what the cause of the issue is without knowing your handling and operation of the board. Typically with these LaunchPads it is either ESD, due to poor handling or conditions, or user error - connecting the board with out of range voltages, or shorting power and ground, etc. Without knowing the state of board and which components are damaged - I can only guess.

    If you identify a failed component, try to replace it. The BOM is available in both the User Guide and the boards directory of C2000Ware for reference. 

    Regards,

    Mark

  • 0 in reply to Mark Labbato
    Expert 1495 points
    Ok sir! I will check that. For now I am using another board for my project.
    Thank You!!

    Nisha
  • 0 in reply to NISHA GOSAVI
    Guru 30330 points
    Nisha,

    I will close this post as you are working using another board, and it appears fixing the broken one is not a priority.

    If you have additional questions related to the damaged board, please reply here. In 30 days this thread will lock. If that happens, you can use the "+Ask a related question" button to create a new thread.

    Regards,
    Mark