Advantech TREK-510, Руководство пользователя

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TREK ‐ 510 User manual 41
6.4.4.3 WatchDog timer
It is important in industrial applications that the control systems are rarely crashed, or are
capable of self ‐ reset if they are halted somehow. Watchdog function of automatic resetting
system is therefore provided in TREK510. There is a timer inside the watchdog function. User’s
AP could invoke the associated APIs in Watchdog function to start the timer, then Watchdog
function would repeat the countdown of the specified period of time to reboot the system if
the user’s AP does not clear the timer in time periodically. The Watchdog function in the
TREK510 provides eight different time intervals: 2 seconds, 5 seconds, 10 seconds, 30 seconds,
60 seconds, 2 minutes, 5 minutes and 10 minutes. The “Enable" button is used to start the
Watchdog function. Press the "SoftReset" button will cause system warm boot, reloads all
drivers and refresh the newest registry settings. Press the “REBOOT” button will cause the
system cold boot. Press RTC TIME start button, it will get real RTC value from RTC chip.
Figure 6.7Watchdog timer
6.4.4.4 Miscellaneous
The Misc page provides several functions as described below. The "Registry" block provides
registry save and registry clean function. Pressing “Save” button, the registry settings will be
saved to persistent storage as DISKONCHIP. Pressing “Clean” button, the registry setting will
return to default settings. The “A.Sync” button invokes ActiveSync to the host computer.The
Memory Management block will check if memory size needs to be allocated automatically
during boot. Once this is checked, program memory will be allocated half size of memory, and
storage memory will occupy the rest.