Advantech SOM-5786 Uživatelský manuál stáhnout pdf (Strana 59)

51 Appendix B

The following example shows how

you might

program

the

watchdog

timer in BASIC:

10

REM

Wa t c h d o g

timer example program

20

OUT &H443, data REM

Start and restart the watchdog

30

GOSUB 1000 REM

Your application

task #1,

40

OUT &H443, data REM

Reset

the

timer

50

GOSUB 2000 REM

Your application

task #2,

60

OUT &H443, data REM

Reset

the

timer

70

X=INP (&H443)

REM,

Disable the

watchdog timer

80

END

1000

REM

Subroutine #1, your application

task

..

..

..

1070

RETURN

2000

REM

Subroutine #2, your application task

..

..

..

2090

RETURN

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