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Watchdog Handlers

Guru Charan
Prodigy 250 points

Hi Everyone,

                      I'm using DEVKIT8000, and i need to implement watchdog reset in u-boot, i have gone through all the registers used for watchdog registers but i'm not getting watchdog handlers, please anyone guide how to use handlers and how to initialise watchdog in the u-boot.

Thanks & Regards,

Guru Charan

  • 0
    TI__Guru 65405 points

    Hi Guru,

    The mechanism of watchdog timers and reset are described in the Technical Reference manual - chapter 16.4.

    http://www.ti.com/lit/ug/spruf98x/spruf98x.pdf

    You could check the which registers are necessary to be configured. About reset period look at 16.4.3.4 Prescaler Value/Timer Reset Frequency and Table 16-64. The configuration of the register write in the u-boot board file.

    BR

    Tsvetolin Shulev

  • 0 in reply to Cvetolin Shulev-XID
    Prodigy 250 points

    Hi Tsvetolin Shulev,

                                       I have checked out that one and it worked, thank you so much for your guidance.

    Thanks & Regards,

    Guru Charan

  • 0 in reply to Guru Charan
    Prodigy 250 points

    Hi Tsvetolin Shulev,

                                       Hi I came to know how to initialise watchdog registers & and how  to change delay using WLDR reg, but I'm not getting how to use pre-scalar(i.e. WCLR reg), and one more thing is I want to stop the counter register of watchdog after it has reached certain point I want to know what is  the procedure to stop watchdog counter after initialisation. Please guide me in this issue.

       

    Thanks & Regards,

    Guru Charan