The following example shows how you might program the watchdog timer in BASIC:

10REM Watchdog timer example program

20OUT &H443, data REM Start and restart the watchdog

30GOSUB 1000 REM Your application task #1,

40OUT &H443, data REM Reset the timer

50GOSUB 2000 REM Your application task #2,

60OUT &H443, data REM Reset the timer

70X=INP (&H443) REM, Disable the watchdog timer

80END

1000

REM

Subroutine #1, your application task

 

 

 

1070

RETURN

2000

REM

Subroutine #2, your application task

 

 

 

2090

RETURN

Appendix B

Programming the Watchdog Timer

143

Page 159
Image 159
Advantech PPC-150 manual 143