RE: Nrf52810 Watchdog timer resets every 2 seconds

Dilip.n — Sat, 18 Jan 2020 05:10:31 GMT

Hi,

I have same issue even when i used the above code, is there any other enable condition for RR reloading or in general to enable WDT?.

RE: Nrf52810 Watchdog timer resets every 2 seconds

Einar Thorsrud — Fri, 17 Jan 2020 14:47:13 GMT

Hi,

The reason for the reset is that RR0 is enabled by default, as you can see from the reset value of RREN register. So if you only want one channel, you can configure the WDT like this instead:

static void System_task_initWatchdog(void)
{
    NRF_WDT->CONFIG = (WDT_CONFIG_HALT_Pause << WDT_CONFIG_HALT_Pos) | ( WDT_CONFIG_SLEEP_Run << WDT_CONFIG_SLEEP_Pos);
    NRF_WDT->CRV = 2*32768; // 2 sec. timout
    NRF_WDT->TASKS_START = 1;
}

And then feed the watchdog like this:

NRF_WDT->RR[0] = WDT_RR_RR_Reload; //Reload watchdog register 0.