Advantech MIOe-DB5000 Manuel d'utilisateur télécharger pdf (Page 84)

MIO-9290 User Manual 76

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 (high byte), 0x5F (low byte)

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, 5Fh ; Watchdog reset delay time low byte (5Eh is high byte) index, Time-

base: 100ms

out dx,al

mov dx, EC_Data_Port

mov al, 64h ;Set 10 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

mov dx, EC_Data_Port

mov al, 04h ; Reset event.

out dx,al

mov dx, EC_Command_Port

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Advantech MIOe-DB5000 Manuel d'utilisateur Page 84