Advantek Networks (USB 2.0) User Manual download pdf (Page 73)

63 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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Configured 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

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 117 118

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Advantek Networks (USB 2.0) User Manual Page 73