Advantech MIOe-DB5000 Manual de usuario descargar pdf (Pagina 84)

MIO-5271 User Manual 74

C.1 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

Stop WDT function = 0x29

Reset WDT function = 0x2A

====================================================

.model small

.486p

.stack 256

.data

.code

org 100h

.STARTup

mov dx, EC_Command_Port

mov al,89h ; Write EC HW ram.

out dx,al

mov dx, EC_Data_Port

mov al, 5Eh ; Watchdog reset delay time high byte index.

out dx,al

mov dx, EC_Data_Port

mov al, 00h ;Set 0 seconds delay time.

out dx,al

mov dx, EC_Data_Port

mov al,5Fh ; Watchdog reset delay time low byte index.

out dx,al

mov dx, EC_Data_Port

mov al, 30h ; Set 3 seconds delay time.

out dx,al

mov dx, EC_Command_Port

mov al, 89h ; Write EC HW ram.

out dx,al

mov dx, EC_Data_Port

mov al,57h ; Watch dog event flag.

out dx,al

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Advantech MIOe-DB5000 Manual de usuario Pagina 84