ADLINK cPCI-3971 - Manual (Page 105)

Utilities 91
cPCI-3970
7 Utilities
7.1 Watchdog Timer
This section describes the operation of the cPCI-3970’s watchdog
timer (WDT). The primary function of the WDT is to monitor the
cPCI-3970's operation and to reset the system if a software appli-
cation fails to function as programmed. The following WDT func-
tions may be controlled using a software application:
X enabling and disabling
X set and get current configuration
X reloading timeout value
The cPCI-3970 custom WDT functionality is implemented using an
Intelligent Platform Management Controller (IPMC) and controlled
using Intelligent Platform Management Interface (IPMI) com-
mands.
Setting the Watchdog by IPMI Command
The following section describes how to set the WDT functions
using IPMI commands. For more detailed information about IPMI
commands, please refer to IPMI specification: Intelligent Platform
Management Interface Specification Second Generation v2.0.
WDT Commands
These commands enable the watchdog function, set the count-
down period, and reload the timeout value periodically to keep it
from resetting the system. If the timer countdown value is not
reloaded, the watchdog resets the system hardware after the
counter reaches zero.
Command NetFn Code Cmd Code
Reset Watchdog Timer App (18h) 22h
Set Watchdog Timer App (18h) 24h
Get Watchdog Timer App (18h) 25h