#include <stdio.h>
#include <conio.h>
#include <windows.h>

/* Definitions in the build of inpout32.dll are:            */
/*   short _stdcall Inp32(short PortAddress);               */
/*   void _stdcall Out32(short PortAddress, short data);    */
/* prototype (function typedef) for DLL function Inp32: */

     typedef short _stdcall (*inpfuncPtr)(short portaddr);
     typedef void _stdcall (*oupfuncPtr)(short portaddr, short datum);

int main(void)
{
     HINSTANCE hLib;
     inpfuncPtr inp32;
     oupfuncPtr oup32;

     short x;
     int i;

     /* Chargement de la librairie*/
     hLib = LoadLibrary("inpout32.dll");

     if (hLib == NULL)
    {
          printf("LoadLibrary Failed.\n");
          return -1;
     }
     /* Récupération de l'adresse de la fonction avec "GetProcAddress" */
     inp32 = (inpfuncPtr) GetProcAddress(hLib, "Inp32");
     /* Vérification que la fonction existe */
     if (inp32 == NULL) {
          printf("GetProcAddress for Inp32 Failed.\n");
          return -1;
     }
     /* Récupération de l'adresse de la fonction avec "GetProcAddress" */
     oup32 = (oupfuncPtr) GetProcAddress(hLib, "Out32");
     /* Vérification que la fonction existe */
     if (oup32 == NULL) {
          printf("GetProcAddress for Oup32 Failed.\n");
          return -1;
     }
     
     //initialisation du port,
(oup32)(0x378 + 2, 0x00);


//allumer ma LED 
(oup32)(0x378, 1 << 3);


//etteindre ma led
//(oup32)(0x378, 0 << 3);

     
     
     
/***************************************************************/
/* now test the functions */

     /* Try to read 0x378..0x37F, LPT1:  */
     for (i=0x378; (i<0x380); i++)
    {
         x = (inp32)(i);
          printf("port read (%04X)= %04X\n",i,x);
     }
     /*****  Write the data register */

     i=0x378;
     x=0x77;
     (oup32)(i,x);
     printf("port write to 0x%X, datum=0x%2X\n" ,i ,x);

     /***** And read back to verify  */
     x = (inp32)(i);
     printf("port read (%04X)= %04X\n",i,x);

     /*****  One more time, different value */

     i=0x378;
     x=0x0;

     (oup32)(i,x);
     printf("port write to 0x%X, datum=0x%2X\n" ,i ,x);

     /***** And read back to verify  */
     x = (inp32)(i);
     printf("port read (%04X)= %04X\n",i,x);

     FreeLibrary(hLib);
     return 0;
}