I have Kinetis K66 series MCU where the watchdog functionality is not working properly

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I have Kinetis K66 series MCU where the watchdog functionality is not working properly

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kuldeepmarker
Contributor I

I have Kinetis K66 series MCU, I have configure watchdog as enabled in my code and due to it my board gets reset. I have implemented the refresh mechanism of the watchdog and it is as per the datasheet but still the board gets reset. If I disable watchdog the board works fine so I am sure somehow my watchdog is not working as expected. Can someone give me a psuedo code as what configurations or steps I should make in order to get proper working of watchdog

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mjbcswitzerland
Specialist V

Hi

UNLOCK_WDOG();
WDOG_TOVALL = (2000/5);
WDOG_TOVALH = 0;
WDOG_STCTRLH = (WDOG_STCTRLH_STNDBYEN | WDOG_STCTRLH_WAITEN | WDOG_STCTRLH_STOPEN | WDOG_STCTRLH_WDOGEN) // watchdog enabled to generate reset on 2s timeout (no further updates allowed)

extern void fnRetriggerWatchdog(void)
{
    if ((WDOG_STCTRLH & WDOG_STCTRLH_WDOGEN) != 0) {  // if watchdog is enabled
        uDisable_Interrupt();          // protect the refresh sequence from interrupts
            REFRESH_WDOG();
        uEnable_Interrupt();
    }
}

Regards

Mark




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Kinetis K66:
- http://www.utasker.com/kinetis/TWR-K65F180M.html
- http://www.utasker.com/kinetis/FRDM-K66F.html
- http://www.utasker.com/kinetis/TEENSY_3.6.html

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