User`s manual

48 Utilities
Once the watchdog has timed out, it will cause a RESET signal to
be sent to the system.
5.2 Using the Watchdog in an Application
The following section is provided to assist you in learning how to
use the watchdog in an application. The watchdog’s Reset func-
tion is as explained above. It can be controlled through the regis-
ters of the Super I/O on the cPCI-6841.
An application using the Reset feature enables the watchdog func-
tion, sets the count-down period of the timer, and reloads the time-
out value periodically to keep it from resetting the system. If the
count-down value of the timer is not reloaded, the watchdog will
reset the system hardware after the counter reaches to zero.
For a detailed programming sample, please refer to the sample
code provide with the CD-ROM located at
X:\cPCI\cPCI-6841\WDT\WDT.CPP