Kinetis MicrocontrollersのトピックRe: using external watchdog with MK64

using external watchdog with MK64

roymessinger — Tue, 31 Jan 2017 16:16:08 GMT

Although, not concerned directly with the MK64, still, I have this question which I'm sure will help other users...

I'm using external watchdog timer in my board to reset the MK64 in case no strobe is passed to it (I know there's also internal watchdog in the MK64).

What I don't understand is what should happen while burning the internal flash of the MK64. Since no strobe will pass to the watchdog timer, the watchdog will reset the board all the time (in loop).

Any idea how to avoid such scenario?

(I've placed pull up resistor on the PB_RST (pushbutton reset pin) but that will not help in case of burning the flash)

Thanks.

Roy

Re: using external watchdog with MK64

Hui_Ma — Tue, 07 Feb 2017 08:18:44 GMT

I do a search and there with a ppt about external watchdog timers.

There with requirement to determine the proper watchdog timeout duration, the programmer must determine the amount of time it takes to execute the code, using worst case scenarios.

Wish it helps.

Have a great day,
Ma Hui
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