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Appendix b: gpi/o programming guide – NEXCOM NViS 3542 User Manual

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Appendix B: GPI/O Programming Guide

NViS 3540/3540H/3540P4/3540P8 and NViS 3542/3542H/3542P4/3542P8 User Manual

NISB3500 GPIO

Appendix B: GPI/O Programming guide

PIN

Description

PIN

Description

1

+5V

2

GND

3

GPO24

4

GPI20

5

GPO25

6

GPI21

7

GPO26

8

GPI22

9

GPO27

10

GPI23

IO base address : 800h
Bit0 : GPI20
Bit1 : GP I21
Bit2 : GP I22
Bit3 : GP I23
Bit4 : GPO24
Bit5 : GPO25
Bit6 : GPO26
Bit7 : GPO27

1. Read/Write GPIO data by I/O port 801h

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