This library implements a simple watchdog timer that checks for network connectivity by send an ICMP echo request to a given host or default gateway address. If the remote host failed to reply for a given number of retries the device will restart.

I have come to notice that sometimes my ESP8266 looses it's network connection but would not reconnect to the WIFI accesspoint. Instead of creating a timer in my program to check for connectivity I decided to try and create a Mongoose OS library so that it would be reusable and maybe help someone else that is having this problem.

This library adds a watchdog section. Containing an interval and a net section.

"watchdog": {
    "enable": false,
    "interval": 60000,
    "net": {
        "host": "",
        "retry": 5
    }
}

By default the library is not enabled. Default configuration had a check interval of 60 seconds, retry count of 5 and an empty host configuration.

If you leave host empty it will use the networks default gateway as the check target.

Because this project is uploaded with name mgos_watchdog you need to add the name attribute to your origin configuration item in mgos.yml or else the compiler will not find the mgos_watchdog... functions.

libs:
  - origin: https://github.com/wowthur/mgos_watchdog
    name: watchdog