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LAUNCHXL-F28P65X: GPIO Pin Not Reflecting Output

Sunmathi B
Prodigy 30 points

Part Number: LAUNCHXL-F28P65X
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

I'm working on GPIO toggling using the example code provided in the SDK for the C2000 (LAUNCHXL-F28p65x). I'm trying to toggle GPIO pin 132, but I'm not seeing the expected signal on the hardware. I’ve tried both GPIO_toggle() and GPIO_write() APIs, but neither of them reflect the changes on the pin.

When I try the same logic on other GPIOs (e.g., GPIO 76, etc.), it works perfectly, and I can see the toggling on the output pins.

Could you help me understand why GPIO 132 specifically isn’t working?
Is there something special or restricted about this GPIO?

I’ve attached the following for reference, code snippet and SysConfig file used for GPIO configuration.

Any guidance or checks you can suggest would be greatly appreciated!




  • 0
    Prodigy 30 points

    Adding to my earlier query regarding GPIO132 not toggling:

    I would like to clarify that this issue is being observed on our custom hardware, which is based on the C2000 series (LAUNCHXL-F28P65x). The same test logic and GPIO configuration work perfectly on other pins (e.g., GPIO76), but GPIO132 specifically shows no output activity.

    We have demoted GPIO132 from its default peripheral functionality, confirmed the settings in SysConfig, and tried both GPIO_togglePin() and GPIO_writePin() APIs but still no change is observed.

    We would appreciate any insights into whether GPIO132 has hardware restrictions, special considerations, or conflicts that could prevent toggling in GPIO mode on custom boards

  • +1 in reply to Sunmathi B
    TI__Mastermind 19716 points

    Hi,

    Can you confirm if the part package is ZEJ ?
    If not then the PIN132 is not present on that package

    Please refer to the below table in datasheet

    Thanks

  • +1 in reply to Prarthan Bhatt
    Prodigy 30 points

    Hi Prarthan Bhatt, 

    The package we are using is F28P659DK8PTPQ, which corresponds to the PTPQ (ZCZ) package. Hence, PIN132 is not available in this package variant.