AXIOMTEK E38M561100, User Manual

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MANO561 Mini ITX Motherboard
50 Digital I/O
Appendix B
Digital I/O
B.1 About Digital I/O
The onboard digital I/O has 8 bits. Each bit can be set to function as input or output by software
programming. In default, all pins are pulled high with +5V level (according to main power). The
BIOS default settings are 4 inputs and 4 outputs.
B.2 Sample Program
#include
"stdafx.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <stdlib.h>
#pragma comment ( lib , "User32.lib" )
#define IDT_TIMER WM_USER + 200
#define _CRT_SECURE_NO_WARNINGS 1
#define setbit (value,x) (value |=(1<<x))
#define clrbit (value,x) (value &=~(1<<x))
#define GPIO_HIGH 1
#define GPIO_LOW 0
HINSTANCE hinstLibDLL = NULL ;
LONG u8AHData = 0;
LONG u88HData = 0;
LONG u89HData = 0;
static int DI0status = 1;
static int DI1status = 1;
static int DI2status = 1;
static int DI3status = 1;
typedef ULONG (* LPFNDLLGETIOSPACE )( ULONG );
LPFNDLLGETIOSPACE lpFnDll_Get_IO;
typedef void (* LPFNDLLSETIOSPACE )( ULONG , ULONG );
LPFNDLLSETIOSPACE lpFnDll_Set_IO;
int _tmain ( int argc , _TCHAR * argv [])
{
if (hinstLibDLL == NULL )
{
hinstLibDLL = LoadLibrary ( TEXT ( "diodll.dll" ));
if (hinstLibDLL == NULL )
{