Arduino thing resets on long setup()

Hardware MKR Family MKRWIFI1010
1

Hi,

I am developing on the Arduino MKR IoT + Wifi1010 and the "thing" ARDUINO library.

I have is a somewhat long setup() procedure, with many waits,
so it lasts upt to 30 seconds, when I sum up all delays.

Unfortunately, it never gets to the end of this process; the card resets itself during a delay().
It is not a power issue since the card has no peripherals and in on USB power.

My hypotheses are:
a. wifi library gets some message and fills in some buffer that eventually overflows, triggering the reset;
b. there is a watchdog somewhere by default, but I could not find any doc about it

So the questions are:
a. Should I write my code in a non-blocking stateful fashion? (eg: with a list of tasks, every pass in the loop executes one task, and delays are implemented by checking the RTC.epoch() )
b. Should I call some Wifi-related buffer cleanup code regularly?
c. Should I avoid delays?
d. is it something else?

Thank you very much

Renaud

2

I think this is it.

Here it is:
https://github.com/arduino-libraries/ArduinoIoTCloud#watchdog

3

I have no experience with a long setup problem. However if it was a watchdog issue wouldn't the main (loop) code have to "kick the dog" to stay running?

I would put serial prints in the Setup to see where the issue is located. Or even numbers of LED blinks or an ON/OFF sequence.

Also if you think it is the WiFi can it be moved to the end of the setup?

4

Yes, all Arduino IoT Cloud Thing sketches have this call in loop:

ArduinoCloud.update();

So that takes care of the kicking, but the rest of the sketch code must not prevent that call.

5

OK i was not aware of that. Perhaps the OP should kick the dog in the setup routine, using a standard call.

6

Thank you, it did the trick

7

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.