Advantech MIO-2260, User Manual

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71 MIO-2260 User Manual
Appendix B
W
DT &
G
PIO
;WD timer counting = 0
;====================================================
mov dx,SCH3 68h
mov al,01h
out dx,al
.exit
END
2. GPIO Sample Code
1. GPIO function:
The SCH3114 Runtime base I/O address is A00h
.model small
.486p
.stack 256
.data
SCH3114_IO EQU A00h
.code
org 100h
.STARTup
;====================================================
;GIPO 0~GPIO 7 Function define(SCH3114_IO Port 23h / 24h / 25h / 26h /
27h / 29h / 2Ah / 2Bh)
; bit [0] = In/Out: = 1 Input, = 0 output
; bit [1] = Polarity : 1 Invert, = 0 No Invert
; bit [7] = Output Type Select : 1 = Open Drian, 0 = Push Pull
;====================================================
mov dx,SCH3 23h ;GPIO 0
mov al,00h ;program GPIO 0 as output
out dx,al
;====================================================
;GIPO 0~GPIO 7 DATA Register (SCH3114_IO Port 4Bh)
; bit [0] = GPIO 0 High/Low: = 1 High, = 0 Low
; bit [1] = GPIO 1 High/Low: = 1 High, = 0 Low
; bit [2] = GPIO 2 High/Low: = 1 High, = 0 Low
; bit [3] = GPIO 3 High/Low: = 1 High, = 0 Low
; bit [4] = GPIO 4 High/Low: = 1 High, = 0 Low
; bit [5] = GPIO 5 High/Low: = 1 High, = 0 Low
; bit [6] = GPIO 6 High/Low: = 1 High, = 0 Low
; bit [7] = GPIO 7 High/Low: = 1 High, = 0 Low
;====================================================
mov dx,SCH3 4Bh ;
mov al,01h ;Set GPIO 0 as High level
out dx,al
.exit