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TMS320F28379D: Delfino™ TMS320F28379D controlCARD R1.3

Hitesh Dialani
Prodigy 20 points
Part Number: TMS320F28379D

I have a question regarding the Delfino™ TMS320F28379D controlCARD R1.3. It has 2 red LEDs located on the control card that randomly turns on or off during testing. Either both are on, one is on or both are off. The datasheet doesn't give info regarding when they should be on. Can someone please explain when either should be on, please? 

  • 0
    TI__Guru 57255 points

    Hi Hitesh,

    I assume you're talking about LD2 & LD3.

    Note that on this TMS320F28379D device, GPIOs default to a HiZ state.  Due to this, U2 will drive the LEDs to a non-deterministic state & can blink at random times.

    Note that by enabling the internal pullups on GPIO31 & GPIO34 via firmware, you can keep these LEDs in a defined state.  See GPAPUD/GPIO_setPadConfig(...) in the TRM.

    Hopefully this helps!


    Thank you,
    Bret

  • 0 in reply to Brett Larimore
    Prodigy 20 points

    Hi Bret,

    Thank you for the answer :) 

    Kind regards,