Advantech PCM-3353 User Manual download pdf (Page 63)

55 PCM-3353 User Manual

Appendix D GPIO Sample Code

jne test_fail

;4.Set GPIO 1,3,5,7 as output,GPIO 0,2,4,6 as input

pop cx

push cx

mov ax,5e87h

mov bx,0255h

int 15h

;4. Set GPIO 1,3,5,7 Output High

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

mov ax,5e87h

mov bx,04ffh

int 15h

;6. Check GPIO 0,2,4,6 value

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

mov ax,5e87h

mov bx,0300h

int 15h

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

dec cx

mov al,Fail_lenght

mul cl

lea dx, Fail_Str

add dx,ax

cmp bl,0ffh

jne test_result

;4. Set GPIO 1,3,5,7 Output differential

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

mov ax,5e87h

mov bx,0422h

int 15h

;5. Check GPI 0,2,4,6 value

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

mov ax,5e87h

mov bx,03FFh

int 15h

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Advantech PCM-3353 User Manual Page 63