Advantech PCM-3353 Bedienungsanleitung PDF herunterladen (Seite 61)

53 PCM-3353 User Manual

Appendix D GPIO Sample Code

; bl= the n group of gpio status

; bit 0 = gpio 0 , 0 => Low; 1 => High

; bit 1 = gpio 1 , 0 => Low; 1 => High

; .....

; bit 7 = gpio 7 , 0 => Low; 1 => High

;===============================================================

====

;===============================================================

====

; Set GPIO status

; Input:

; ax=5E87h

; bh=04h

; cl= n ; n means which group of GPIO you want to set

; bl= the n group of gpio status

; bit 0 = gpio 0 , 0 => Low; 1 => High

; bit 1 = gpio 1 , 0 => Low; 1 => High

; .....

; bit 7 = gpio 7 , 0 => Low; 1 => High

; output:

; ax=5E78 ;function success, other value means function fail

;===============================================================

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

mov ax,5e87h

mov bh,00h

int 15h

cmp ax,5e78h

je next_test

lea dx, Error_Str1

mov ah,09h

int 21h

jmp Finish_Test

next_test:

xor ch,ch

push cx ;save NO. of GPIO chip

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

mov ax,5e87h

mov bx,02aah

int 15h

;2. Set GPIO 0,2,4,6 Output Low

pop cx ;restore NO. of GPIO chip

push cx ;save NO. of GPIO chip

mov ax,5e87h

mov bx,0400h

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 69 70

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