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who has used the watchdog of omap5912?

deyou zhu
Prodigy 100 points
Other Parts Discussed in Thread: OMAP5912

when we try to use the watchdog of omap5912, we found that it couldn't wrok as we wanted. we should swap the cs0 and cs3 when the system start to run, but if the watchdog was reseted, we found that it couldn't do the swap as we wanted!! so the system couldn't run.......

  • 0
    TI__Guru 64460 points

    I think it would be helpful if you could describe a bigger picture of what you are attempting.  Things to include would be the intended boot mode(s) of the device for your application, as well as any differences in your treatment of power on resets versus something triggered by a watchdog timer.

     

    deyou zhu said:

    when we try to use the watchdog of omap5912, we found that it couldn't wrok as we wanted.

    Which watchdog timer are  you referencing, the ARM9's (MPU) watchdog timer or the DSP's watchdog timer?

     

    deyou zhu said:

    we should swap the cs0 and cs3 when the system start to run, but if the watchdog was reseted, we found that it couldn't do the swap as we wanted!! so the system couldn't run.......

    What are you attempting to do when you mention swapping the cs0 and cs3?

    How are you intending to boot the device from a cold reset, or power on reset condition?

    How is this different from when a watchdog reset occurs?

     

  • 0 in reply to BrandonAzbell
    Prodigy 100 points

    I use the arm9's watchdog timer,  when the system die, the watchdog will reset the system, but we found the system couldn't run again!

    we debuged about this, then we found that when reset from watchdog, the cs0 & cs3 couldn't be swap as the cold reset.(we use ourself bootloader, which stored in flash, and the flash is tied with cs3, so we need swap cs0 with cs3 when the system reset)