Ec Watchdog Timer Sample Code - Advantech ark-3405 User Manual

A.1

EC Watchdog Timer Sample Code

EC_Command_Port = 0x29Ah
EC_Data_Port = 0x299h
Write EC HW ram = 0x89
Watch dog event flag = 0x57
Watchdog reset delay time = 0x5E
Reset event = 0x04
Start WDT function = 0x28
====================================================
.model small
.486p
.stack 256
.data
.code
org 100h
.STARTup
mov dx, EC_Command_Port
mov al,89h
out dx,al
mov dx, EC_Command_Port
mov al, 5Fh
out dx,al
mov dx, EC_Data_Port
mov al, 30h
out dx,al
mov dx, EC_Command_Port
mov al,89h
out dx,al
mov dx, EC_Command_Port
mov al, 57h
out dx,al
mov dx, EC_Data_Port
mov al, 04h
out dx,al
mov dx, EC_Command_Port
mov al,28h
out dx,al
.exit
END
ARK-3405 User Manual
; Write EC HW ram.
; Watchdog reset delay time low byte (5Eh is high byte) index.
;Set 3 seconds delay time.
; Write EC HW ram.
; Watch dog event flag.
; Reset event.
; start WDT function.
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