NEXCOM EBC 354 - Manual (Page 61)

Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved 48 EBC 354 User Manual
Appendix A: Watchdog Timer
Appendix A: Watchdog Timer
WDT Programming Guide
EBC354 Watch Dog Function Configuration Sequence Description: SetupWDT PROC
mov dx, 2eh
mov al, 087h
out dx, al
nop
nop
mov al, 01h
out dx, al
nop
nop
mov al, 55h
out dx, al
nop
nop
out dx, al ;Write operations to special address
port (2E) for entering MB PnP Mode.
mov al, 07h
out 2eh, al
mov al, 07h ;Select logical device for Watch Dog.
out 2fh, al
ret
SetupWDT ENDP
Step1. See “SetupWDT” procedure
#Setup Watchdog Timer Environment
Step2. See “TimeBaseWDT” procedure
#Initial Watchdog Timer.
Users can select second or minute.
Step3. See “TimeCountWDT”
procedure
#Set Watchdog Timer Time-out Value.
Users can set time-out value.
Step4: See ExitSetup procedure
#Exit Setup Environment
(ref)
Star
tt
End