NEXCOM APPC 1220T User Manual
Page 109
Copyright © 2011 NEXCOM International Co., Ltd. All Rights Reserved.
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Appendix B: GPI/O Programming Guide
APPC 1220T/1221T/1520T/1521T/1720T/1721T User Manual
GPIO Programming Sample Code
#define GPIO_PORT
0x284
#define GPO3
(0x01 << 4)
#define GPO5
(0x01 << 5)
#define GPO7
(0x01 << 6)
#define GPO9
(0x01 << 7)
#define GPO3_HI
outportb(GPIO_PORT, 0x10)
#define GPO3_LO
outportb(GPIO_PORT, 0x00)
#define GPO5_HI
outportb(GPIO_PORT, 0x20)
#define GPO5_LO
outportb(GPIO_PORT, 0x00)
#define GPO7_HI
outportb(GPIO_PORT, 0x40)
#define GPO7_LO
outportb(GPIO_PORT, 0x00)
#define GPO9_HI
outportb(GPIO_PORT, 0x80)
#define GPO9_LO
outportb(GPIO_PORT, 0x00)
void main(void)
{
GPO3_HI;
GPO5_LO;
GPO7_HI;
GPO9_LO;
}
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