Appendix A Watchdog Timer; A.1 About Watchdog Timer; A.2 How To Use Watchdog Timer - AXIOMTEK SBC87842 User Manual

A.1 About Watchdog Timer

After the system stops working for a while, it can be auto-reset by the watchdog timer. The
integrated watchdog timer can be set up in the system reset mode by program.

A.2 How to Use Watchdog Timer

The following example enables configuration using debug tool.
Enable WDT

Enable configuration:

Select logic device:

WDT device enable:

Set timer unit:

Set base timer:
Disable WDT

Enable configuration:

Select logic device:

WDT device disable:
Watchdog Timer
Watchdog Timer
O 2E 87 ; Un-lock super I/O
O 2E 87
O 2E 07
O 2F 08
O 2E 30
O 2F 01
O 2E F0
O 2F 00 ; (00: Sec; 08:Minute)
O 2E F1
O 2F 0A ; Set reset time (where 0A (hex) = 10sec)
O 2E 87 ; Un-lock super I/O
O 2E 87
O 2E 07
O 2F 08
O 2E 30
O 2F 00
SBC87842 Single Board Computer
Appendix A
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