www.pudn.com > WinIoForVB.rar > Port32.cpp

// ---------------------------------------------------- // 
//                      WinIo v2.0                      // 
//  Direct Hardware Access Under Windows 9x/NT/2000/XP  // 
//           Copyright 1998-2002 Yariv Kaplan           // 
//               http://www.internals.com               // 
// ---------------------------------------------------- // 
 
#include  
#include  
#include  
#include "port32.h" 
#include "..\drv\nt\winio_nt.h" 
#include "..\drv\9x\winio_9x.h" 
#include "winio.h" 
 
 
bool _stdcall GetPortVal(WORD wPortAddr, PDWORD pdwPortVal, BYTE bSize) 
{ 
  tagPort32Struct Port32Struct; 
  DWORD dwBytesReturned; 
   
  if (!IsWinIoInitialized) 
    return false; 
 
  if (IsNT) 
  { 
    switch (bSize) 
    { 
      case 1: 
 
        *pdwPortVal = _inp(wPortAddr); 
 
      break; 
 
      case 2: 
 
        *pdwPortVal = _inpw(wPortAddr); 
 
      break; 
 
      case 4: 
 
        *pdwPortVal = _inpd(wPortAddr); 
 
      break; 
    } 
  } 
  else 
  { 
   Port32Struct.bSize = bSize; 
   Port32Struct.wPortAddr = wPortAddr; 
    
   return DeviceIoControl(hDriver, WINIO_READPORT, &Port32Struct, sizeof(Port32Struct), 
                          pdwPortVal, sizeof(DWORD), &dwBytesReturned, NULL); 
  } 
 
  return true; 
} 
 
 
bool _stdcall SetPortVal(WORD wPortAddr, DWORD dwPortVal, BYTE bSize) 
{ 
  tagPort32Struct Port32Struct; 
  DWORD dwBytesReturned; 
 
  if (!IsWinIoInitialized) 
    return false; 
 
  if (IsNT) 
  { 
    switch (bSize) 
    { 
      case 1: 
 
        _outp(wPortAddr, dwPortVal); 
 
      break; 
 
      case 2: 
 
        _outpw(wPortAddr, (WORD)dwPortVal); 
 
      break; 
 
      case 4: 
 
        _outpd(wPortAddr, dwPortVal); 
 
      break; 
    } 
  } 
  else 
  { 
   Port32Struct.bSize = bSize; 
   Port32Struct.dwPortVal = dwPortVal; 
   Port32Struct.wPortAddr = wPortAddr; 
    
   return DeviceIoControl(hDriver, WINIO_WRITEPORT, &Port32Struct, sizeof(Port32Struct), 
                          NULL, 0, &dwBytesReturned, NULL); 
  } 
   
  return true; 
}