Watchdog automatically fed after wakeup?

[Daniel Dakhno]

When configuring the watchdog to pause in sleep mode, is it automatically fed after a wakeup from power_manage()?

Is the feed required in this loop, or can I leave it out and rely on the WDT to be fed when app_sched_execute starts?

for (;;) {

  power_manage();

  nrf_drv_wdt_feed();

  app_sched_execute();

}

[Kenneth]

Hello,

You (the application) will need to feed the watchdog during wakeup yes, if it doesn't run in sleep, then placing it right after wakeup seems like a good idea.

Kenneth

[Daniel Dakhno]

Heyo and thank you. I have a follow-up question:

I did it the way we proposed, but the chip was waking up for advertising and heartbeats by itself (as it is supposed to do).

This caused the CPU to run and the watchdog to tick.

`power_manage` did not return though, so the watchdog was never fed.

So, by just maintaining a BLE connection, without writing any data, the watchdog eventually overran.

What would be your solution to this?

I solved this by hooking on to radio events and feeding the watchdog there.

Thanks!

[Kenneth]

I would not have thought of that one, but yes that could also trigger watchdog yes since CPU is running. So I think your workaround is good.

Kenneth