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Re: Initialize watchdog timer from function

Posted: Wed Jun 29, 2022 9:35 am
by bulletmark
PM-TPI wrote:
Wed Jun 29, 2022 8:36 am
wdt = WDT(timeout=120_000) is run before wdt.feed()
No it's not.

Re: Initialize watchdog timer from function

Posted: Thu Jun 30, 2022 11:34 am
by PM-TPI
PM-TPI wrote:
Wed Jun 29, 2022 8:36 am
Note: start_up() is run before run_ing()
isn't the order...
a) wdt = WDT(timeout=120_000) to Initialize
then..
b) wdt.feed

Or do I have this backwards ?

Re: Initialize watchdog timer from function

Posted: Thu Jun 30, 2022 11:49 am
by bulletmark
The error you report here shows that `wdt.feed()` is being called at startup *before* `wdt = WDT(timeout=120_000)`.

Re: Initialize watchdog timer from function

Posted: Thu Jun 30, 2022 3:09 pm
by PM-TPI

Code: Select all

from machine import WDT

def start_up():	# This is run FIRST... init wifi ble etc
	global wdt
	other stuff....
	
	wdt = WDT(timeout=120_000) # 2min

def run_ing():	# This is run AFTER start_up and is run every min.
	global wdt
	wdt.feed()
	other stuff....
wdt.feed() is in... run_ing()
not start_up()

Re: Initialize watchdog timer from function

Posted: Thu Jun 30, 2022 3:33 pm
by karfas
PM-TPI wrote:
Thu Jun 30, 2022 3:09 pm

Code: Select all

from machine import WDT

def start_up():	# This is run FIRST... init wifi ble etc
	global wdt
	other stuff....
	
	wdt = WDT(timeout=120_000) # 2min

def run_ing():	# This is run AFTER start_up and is run every min.
	global wdt
	wdt.feed()
	other stuff....
wdt.feed() is in... run_ing()
not start_up()
Nobody cares how you name the functions where WDT() and wdt.feed() get called.

In your case, run_ing() is (obviously) called somewhere before the Watchdog object instance (=wdt) gets created.
Also note that you need to declare the global variable near the beginning of your file ("wdt = None" like in a previous post).