Arbor Technology HiCORE-i89Q1, Руководство пользователя

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Appendix
Appendix C. Digital I/O Setting
Digital I/O can read from or write to a line or an entire digital port, which is a
collection of lines. This mechanism helps users achieve various applications
such as industrial automation, customized circuit, and laboratory testing. Take
the source code below that is written in C for the digital I/O application example.
Sample Codes:
/*----- Include Header Area -----*/
#include “math.h”
#include “stdio.h”
#include “dos.h”
#define sioIndex 0x2E /* or 0x4E */
#define sioData 0x2F /* or 0x4F */
/*----- routing, sub-routing -----*/
void main()
{
int iData;
SioGPIOMode(0x0F);
delay(2000);
SioGPIOData(0x05);
delay(2000);
iData = SioGPIOStatus();
printf(“ Input : %2x \n”,iData);
delay(2000);
SioGPIOData(0x0A);
delay(2000);
iData = SioGPIOStatus();
printf(“ Input : %2x \n”,iData);
delay(2000);
}
void SioGPIOMode(int iMode)
{
outportb(sioIndex,0x87); /* Enable Super I/O */
outportb(sioIndex,0x87);
outportb(sioIndex,0x07); /* Select logic device – GPIO */
outportb(sioData, 0x06);
outportb(sioIndex,0x30); /* Enable GPIO */
outportb(sioData, 0x01);
outportb(sioIndex,0xC0); /* GPIO3 0~7 - Output Enable */
outportb(sioData,iMode);
outportb(sioIndex,0xAA); /* Disable Super I/O */
}
void SioGPIOData(int iData)
{
outportb(sioIndex,0x87); /* Enable Super I/O */
outportb(sioIndex,0x87);