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NEXCOM NISE 3640E User Manual

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Copyright © 2013 NEXCOM International Co., Ltd. All Rights Reserved.

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NISE 3640E Series User Manual

Appendix B: GPI/O Programming Guide

GPIO programming sample code

#define GPIO_PORT

0xA04

#define GPO0

(0x01 << 4)

#define GPO1

(0x01 << 5)

#define GPO2

(0x01 << 6)

#define GPO3

(0x01 << 7)

#define GPO0_HI

outportb(GPIO_PORT, GPO0)

#define GPO0_LO

outportb(GPIO_PORT, 0x00)

#define GPO1_HI

outportb(GPIO_PORT, GPO1)

#define GPO1_LO

outportb(GPIO_PORT, 0x00)

#define GPO2_HI

outportb(GPIO_PORT, GPO2)

#define GPO2_LO

outportb(GPIO_PORT, 0x00)

#define GPO3_HI

outportb(GPIO_PORT, GPO3)

#define GPO3_LO

outportb(GPIO_PORT, 0x00)

void main(void)
{
GPO0_HI;
GPO1_LO;
GPO2_HI;
GPO3_LO;
}

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