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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