IBASE MI802 - Manual (Page 57)

APPENDIX
MI802 User’s Manual 53
D. Digital I/O Sample Code
Files of the MAIN.CPP
//---------------------------------------------------------------------------
#include <dos.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include "F81866.H"
#define BIT0 0x01
#define BIT1 0x02
#define BIT2 0x04
#define BIT3 0x08
#define BIT4 0x10
#define BIT5 0x20
#define BIT6 0x40
#define BIT7 0x80
//---------------------------------------------------------------------------
int main (void);
void Dio3Initial(void);
void Dio3SetOutput(unsigned char);
unsigned char Dio3GetInput(void);
void Dio3SetDirection(unsigned char);
unsigned char Dio3GetDirection(void);
//---------------------------------------------------------------------------
int main (void)
{
char SIO;
unsigned char DIO;
printf("Fintek 81866 digital I/O test program. Ver 2.0\n");
SIO = Init_F81866();
if (SIO == 0)
{
printf("Can not detect Fintek 81866, program abort.\n");
return(1);
}//if (SIO == 0)
Dio3Initial();
/*
//for GPIO30..37
Dio3SetDirection(0xF0); //GP30..33 = input, GP34..37=output
printf("Current DIO direction = 0x%X\n", Dio3GetDirection());
printf("Current DIO status = 0x%X\n", Dio3GetInput());
printf("Set DIO output to high\n");
Dio3SetOutput(0x0F);
printf("Set DIO output to low\n");
Dio3SetOutput(0x00);
*/
//for GPIO30..37
Dio3SetDirection(0xF0); //GP30..33 = input, GP34..37=output
Dio3SetOutput(0x00); //clear
// DIO = Dio3GetInput() & 0x0F;