ADLINK PXI-3980 - Manual (Page 63)

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PXI-3980
Appendix B - Watchdog Timer
This appendix describes use of the watchdog timer (WDT) func-
tion library for the PXI-3980 controller. The watchdog timer is a
hardware mechanism resetting the system when the operating
system or application halts. After starting, periodic reset of the
watchdog timer in the application before expiry is required. Once
the watchdog timer expires, a hardware-generated signal is sent
to reset the system.
B.1 WDT Function Library
B.1.1 InitWDT
Description
Initializes watchdog timer function. InitWDT must be called
before the invocation of any other WDT function.
Supported Controllers
PXI-3980, PXI-3950, PXI-3920, PXI-3910
Syntax
C/C++
BOOL InitWDT()
Visual Basic
InitWDT() As Boolean
Parameter
None
Return Code
B.1.2 SetWDT
Description
Sets the timeout value for watchdog timer. The timeout
value uses seconds as a unit. ResetWDT or StopWDT
should be called prior to expiration of the watchdog timer, or
the system will be reset.
True If watchdog timer is successfully initialized
False If watchdog timer fails to initialize