System stops after wdt reset

[Daven007]

Sometimes the system stops after a wdt reset
e.g. output:

mac 662

ets Jan 8 2013,rst cause:4, boot mode:(1,6)

wdt reset

then nothing until reset button pressed.

Any ideas please or is this an SDK bug?

[eriksl]

If you need to reset the watchdog, you're doing something terribly wrong (which I believe I have written here more than once). And yes, then you can expect about everything. Re-write your code so you won't have to reset the watchdog and it will work.

[nver]

I agree that the code should be written such that it does not cause the watchdog reset.

However, if the watch dog timer is ever expired for whatever reasons, the system must reboot back and must not stuck waiting for someone to come and press the HW reset button. No matter what is the reason for wdog reset, at the end of the day its a kind of system Or CPU reset and system must re-start.

Btw thanks for the great chip.

[costaud]

Sometimes the system stops after a wdt reset
e.g. output:

mac 662

ets Jan 8 2013,rst cause:4, boot mode:(1,6)

wdt reset

then nothing until reset button pressed.

Any ideas please or is this an SDK bug?

Ok,I think the point is :

If a watchdog reset occurs, the chip would exactly go back to the same mode as the chip was in, when it was powered on last time.
That is , if you set the chip into download mode and download a firmware,then without a rebooting and run the code directly,
in this case, when there was a watchdog reset , the chip would of course go back to download mode.

So please make sure you reboot the chip and run in flash boot mode first.