Nexcom EBC 357X Series User Manual page 84

Appendix A: GPI/O Programming Guide
GPIO programming sample code
#define GPO0 (0x01 << 6)
#define GPO1 (0x01 << 5)
#define GPO2 (0x01 << 0)
#define GPO3 (0x01 << 1)
#define GPO0_HI outportb(0xA03, GPO0)
#define GPO0_LO outportb(0xA03, 0x00)
#define GPO1_HI outportb(0xA02, GPO1)
#define GPO1_LO outportb(0xA02, 0x00)
#define GPO2_HI outportb(0xA07, GPO2)
#define GPO2_LO outportb(0xA07, 0x00)
#define GPO3_HI outportb(0xA07, GPO3)
#define GPO3_LO outportb(0xA07, 0x00)
void main(void)
{
GPO0_HI;
GPO1_LO;
GPO2_HI;
GPO3_LO;
}
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EBC 357X User Manual