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TMS570LS3137: watchdoge cause the reset the cpu ,cpu condition

whong zhao
Genius 4190 points
Part Number: TMS570LS3137


Hello

I already initialize the gio.If my cpu reset casue by the external watchdog , I want to make the program endless loop. And reset gio .

 But I dont know the cpu reset ,the gio can be set to high and low .

  • 0
    TI__Guru**** 199096 points

    Hi Whong,

    I am not very clear about your question. 

    The startup code checks the reset condition, you can insert your code here:

    else if ((SYS_EXCEPTION & WATCHDOG_RESET) !=0U)
    {

       ....

    }

  • 0 in reply to QJ Wang
    Genius 4190 points

    Thank you 

    1.The tps65381 cause the cpu reset ,that can into this judge？ ((SYS_EXCEPTION & WATCHDOG_RESET) !=0U)

    2. if the cpu reset by tps65381, and my program  excute the "giosetbit(hetport,0,1)".Can the pin be setted？because the cpu reset ,i dont know the gio condition ，Do I need to initialize again,or dont need initialize?

  • +1 in reply to whong zhao
    TI__Guru**** 199096 points

    Hi Whong,

    1. No. The WATCHDOG_RESET is the reset caused by the on chip watchdog rather than the external watchdog. If the NRES of TPS65381 is connected to TMS570 nPORRST, the reset source of the reset caused by TPS65381 is power-on reset.

    If the NRES of TPS65381 is connected to TMS570 nRST, the reset source of the reset caused by TPS65381 is EXT Reset.

    2. At this moment, the peripherals haven't released from reset, and clocks to all the peripherals are disabled. So calling giosetbit(hetport,0,1) won't set the pin.

  • 0 in reply to QJ Wang
    Genius 4190 points

    Hello

    Thank you