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→Hardware watch the door dog test
<ol style="list-style-type: lower-alpha;">
<li><p>The second parameter 10 indicates the counting time of the door. If there is no dog feeding in this time, the system will restart.</p></li>
<li><p>We can feed the dog by pressing any keys on the keyboard (except ESC). After the dog is fed, the program will print a line of Keep Alive to indicate that the dog is successful</p></li></ol>
{| class="wikitable" style="width:800px;"
|-
|
orangepi@orangepi:~$ '''sudo watchdog_test 10'''
keep alive
|}
</ol>
<span id="check-the-serial-number-of-the-rk3566-chip"></span>
== Check the serial number of the RK3566 chip ==
