Wdt Sample Code - C&T Solution RCO-3200 Series User Manual

Appendix – WDT & GPIO

WDT Sample Code

SIO_INDEX_Port equ 04Eh
SIO_DATA_Port equ 04Fh
SIO_UnLock_Value equ 087h
SIO_Lock_Value equ 0AAh
WatchDog_LDN equ 007h
WDT_UNIT equ 60h
WDT_Timer equ 30
Sample code:
;Enable config mode
mov dx, SIO_INDEX_Port
mov al, SIO_UnLock_Value
out dx, al
jmp short $+2
jmp short $+2
out dx, al
;Change to WDT
mov dx, SIO_INDEX_Port
mov al, 07h
out dx, al
mov dx, SIO_DATA_Port
mov al, WatchDog_LDN
out dx, al
;Acive WDT
mov dx, SIO_INDEX_Port
mov al, 30h
out dx, al
mov dx, SIO_DATA_Port
in al, dx
or al, 01h
out dx, al
;set timer
mov dx, SIO_INDEX_Port
mov al, 0F6h
out dx, al
mov dx, SIO_DATA_Port
mov al, WDT_Timer
out dx, al
;set UINT
mov dx, SIO_INDEX_Port
mov al, 0F5h
out dx, al
mov dx, SIO_DATA_Port
mov al, WDT_UNIT
out dx, al
;enable reset
mov dx, SIO_INDEX_Port
mov al, 0Fah
out dx, al
mov dx, SIO_DATA_Port
in al, dx
or al, 01h
out dx, al
;close config mode
mov dx, SIO_INDEX_Port
mov al, SIO_Lock_Value
out dx, al
;60h=second, 68h=minute, 40h=Disabled Watchdog timer
;ex. 30 seconds
;Io_delay
;Io_delay
RCO-3200 | User's Manual
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