topic Re: Kl16 watchdog maximum timeout in Kinetis Microcontrollers

Kl16 watchdog maximum timeout

praveen2 — Mon, 02 Apr 2018 12:48:50 GMT

Hi,

Iam facing an issue with KL16 watchdog. Below code is working fine form me.

Clock selected = LPO and its giving 1 second timeout.

But Iam looking at least 1 minute to 2 minute timeout for my application.

void wdt_init(void)
{
SIM->COPC = 0x0C;

}

void wdt_keep_alive(void)
{
SIM->SRVCOP = 0x55;
SIM->SRVCOP = 0xAA;
}

is there any way to increase this timeout. ?

mjbcswitzerland — Mon, 02 Apr 2018 18:39:43 GMT

The longest possible COP timeout is 1s using LPO as clock source.

Regards

Mark

praveen2 — Mon, 02 Apr 2018 18:59:19 GMT

Hi,

Thanks for your replay.

But any possibility there, using Bus clock.

With regards,

Praveen

mjbcswitzerland — Mon, 02 Apr 2018 20:02:03 GMT

If you use bus clock the maximum timeout is in the ms regions so this mode is usually not very useful.

Regards

Mark

praveen2 — Tue, 03 Apr 2018 05:51:22 GMT

Hi,

Thanks for the replay.

With regards,

Praveen