salve
volendo provare a utilizzare la porta parallela per controllare un motore passo-passo mi sono messo a cercare nel forum ed ho visto che è stato consigliato ad u utente con il mio stesso problema questo link:http://www.hytherion.com:80/beattidp/comput/pport.htm.
Qui c'è un programmino in c :
/**************************************************/
/*** ***/
/*** TEST.c -- test interface to inpout32.dll ***/
/*** ( http://www.logix4u.net/inpout32.htm ) ***/
/*** ***/
/*** Copyright (C) 2003, Douglas Beattie Jr. ***/
/*** ***/
/*** <beattidp@ieee.org> ***/
/*** http://www.hytherion.com/beattidp/ ***/
/*** ***/
/**************************************************/
/* Last Update: 2006.05.14
*/
/************************************************** *****/
/* */
/* Builds with Borland's Command-line C Compiler */
/* (free for public download from Borland.com, at */
/* http://www.borland.com/bcppbuilder/freecompiler ) */
/* */
/* Compile with: */
/* */
/* BCC32 -IC:\BORLAND\BCC55\INCLUDE TEST.C */
/* */
/* */
/* Be sure to change the Port addresses */
/* accordingly if your LPT port is addressed */
/* elsewhere. */
/* */
/************************************************** *****/
#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;
/* Load the library */
hLib = LoadLibrary("inpout32.dll");
if (hLib == NULL) {
printf("LoadLibrary Failed.\n");
return -1;
}
/* get the address of the function */
inp32 = (inpfuncPtr) GetProcAddress(hLib, "Inp32");
if (inp32 == NULL) {
printf("GetProcAddress for Inp32 Failed.\n");
return -1;
}
oup32 = (oupfuncPtr) GetProcAddress(hLib, "Out32");
if (oup32 == NULL) {
printf("GetProcAddress for Oup32 Failed.\n");
return -1;
}
/************************************************** *************/
/* 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);
e anche la libreria inpout32.dll.
la mia domanda è in che cartella devo copiare questa libreria???ho provato a metterla in
system,system32,WINDOWS ma quando vado ad eseguire il programma ho:
LoadLibrary Failed
come posso fare???
ho compilato ed eseguito con visual c++..............
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