WDT

The wdt module provides the WDT(Watchdog timer) class which supports Watchdog timer. Use require('wdt') to access this module.

Class: WDT

An instances of WDT represents a WDT object.

new WDT(timeout)

• timeout <number> milliseconds of the watchdog timeout.
• Returns: <object> The return value is WDT object.

Start watchdog timer. the system is reset if watchdog timer is expired.

const { WDT } = require('wdt');
var wdt = new WDT(100); // 100 ms watchdog timer settings

wdt.feed()

This method reset watdog reset timer. To avoid watchdog reset, this function should be called before watchdog timer expiration.

const { WDT } = require('wdt');
const wdt = new WDT(1000); // 1 sec watchdog timeout

var timer = 0;

var timer_id = setInterval(()=> {
    wdt.feed(); // Reset watchdog timer
    timer += 500;
    console.log("Reset watchdog timer " + timer + " ms");
    if (timer > 10000) { // Do not reset for 10 sec.
        clearInterval(timer_id);
        console.log("Watchdog reset after 1 sec.");
    }
}, 500);