A Watchdog Timer is Needed in Every Device
Many embedded devices fail in the field because they lack one simple safeguard — a watchdog timer.
Without it, even a small software hang can make your product unresponsive until a customer flips the breaker.
That’s exactly what happened to me today.
I had to power cycle my house today.
Not because of a storm or electrical issue.
Because a smart light switch stopped responding weeks ago — and cutting power to the misbehaving device was the only way to bring it back.
This is what happens when embedded devices ship without . . .
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