The method of running the watchdog_test program is shown below

a. The second parameter 10 indicates the counting of the door dog. If the dog is not fed in this time, the system will restart

b. 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.

orangepi@orangepi:~$ sudo watchdog_test 10
open success
options is 33152,identity is sunxi-wdt
put_usr return,if 0,success:0
The old reset time is: 16
return ENOTTY,if- 1,success:0
return ENOTTY,if- 1,success:0
put_user return,if 0,success:0
put_usr return,if 0,success:0
keep alive
keep alive
keep alive