Changes

<li><p>The second parameter 10 indicates the counting of the door dog. If the dog is not fed in this time, the system will restart</p></li>

<li><p>We can feed the dog by pressing any key (except ESC) on the keyboard. After the dog is fed, the program will print a line of Keep Alive to indicate that the dog is successful.</p>

<p>orangepi@orangepi:~$ '''sudo watchdog_test 10'''</p>

<p>open success</p>

<p>keep alive</p>

<p>keep alive</p>

<span id="check-the-chipid-of-the-h618-chip"></span>

== Check the chipid of the H618 chip ==