The WDT is used to restart the system when the application crashes and ends up into a non recoverable state. After enabling, the application must “feed” the watchdog periodically to prevent it from expiring and resetting the system.
from machine import WDT wdt = WDT(timeout=2000) # enable it with a timeout of 2 seconds wdt.feed()
Create a WDT object and start it. The id can only be 0. See the init method for the parameters of initialisation.
id
0
Initialize the watchdog timer. The timeout must be given in milliseconds. Once it is running the WDT cannot be stopped but the timeout can be re-configured at any point in time.
Feed the WDT to prevent it from resetting the system. The application should place this call in a sensible place ensuring that the WDT is only fed after verifying that everything is functioning correctly.
