Advantech PCI-6881 Manual de usuario descargar pdf (Pagina 87)

77 Appendix A

A.1.2 GPIO Example program-1

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Enter the extended function mode, interruptible double-write

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MOV DX,2EH

MOV AL,87H

OUT DX,AL

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Configure logical device 7(GP10~GP17), configuration register

CRF0,CRF1,CRF2

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MOV DX,2EH

MOV AL,07H ; point to Logical Device Number Reg.

OUT DX,AL

MOV DX,2FH

MOV AL,07H ; select logical device 7

OUT DX,AL ;

MOV DX,2EH

MOV AL,F0

OUT DX,AL

MOV DX,2FH

MOV AL,00H ; 01:Input 00:output for GP10~GP17

OUT DX,AL

MOV DX,2EH

MOV AL,F2H ;

OUT DX,AL

MOV DX,2FH

MOV AL,00H ;Set GPIO is normal not inverter

OUT DX,AL;

MOV DX,2EH

MOV AL,F1H

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Advantech PCI-6881 Manual de usuario Pagina 87