disoftports.cpp

16 relay output channels and 16 isolated digital input channels LED indicators to show activated

//#############################################################################
//*****************************************************************************
//
//			Copyright (c) 2005 Xi'an R&D Center Advantech Automation Corp.
//
//     This is An Unpublished Work Containing Confidential  And Proprietary
//        Information Which Is The Property Of Advantech  Automation Corp.
//
//    Any Disclosure, Use, Or Reproduction, Without Written Authorization From
//              Advantech Automation Corp., Is Strictly Prohibit.
//
//*****************************************************************************
//#############################################################################
//
//	  File Name :  DiSoftPorts.CPP
//	  Revision  :  1.0
//
//	  Created   :  05/30/2005
//
//   Description :
//     This examples performs the operation for DI ports .
//
//-----------------------------------------------------------------------------
// 
//   FUNCTIONS:
// 
//   Main() - Process entry.
// 
//   ShowDevList() - Show the list of installed devices.
// 
//   SelectDevice() - Prompt user to select a device and return the handle.
// 
//   SelectPort() - Prompt user to choose the start port and port count for 
//                  data output.
//   
//   ReadPorts() - Read the data from the selected ports.
//
//   ErrReport() - Report the error returned from driver. 
//
//   ClearStream() - Clear the get stream.
//
//-----------------------------------------------------------------------------
//
//   API Used:
//
//   DRV_DeviceOpen,
//   DRV_DeviceClose,
//   DRV_GetErrorMessage,
//   DRV_DeviceGetProperty,
//   DRV_DeviceGetNumOfList,
//   DRV_DeviceGetList,
//   AdxDioReadDiPorts,
//
//-----------------------------------------------------------------------------
#include "DiSoftPorts.h"
#include <assert.h>  //For assert statement

//----------------------------------------------------------------------------
//The maximum count of devices.
#define MAX_ENTRIES 100 

//The maximum of the length of all of the numbers. In fact, you can only input 
//a number that lesses than 999 and larges than 0.
#define MAX_NUMLONG  4     
//----------------------------------------------------------------------------

int main(int argc, char* argv[])
{
   //Useful variables
   LONG lDevHandle = 0;     //Driver handle
   BOOL bKeepRun = TRUE;
   cout << "*************************************************************" << endl;
   cout << "Welcome to the DI ports DEMO program!" << endl;
   cout << "*************************************************************" << endl;
   while ( bKeepRun )
   {
      BYTE btOption = 0;    //Seletive option
      
      cout << "Please Select what you want to do: " << endl;
      cout << "input 'R' for Running the program. or 'E' for Exiting." << endl;
      cin.width( 1 );
      cin >> btOption;
      ClearStream();
      switch ( btOption )
      {
      case 'r':
      case 'R':
         {
            cout << "Please select a device according to the device list: " << endl;
            //Firstly, select device
            DWORD * pDevNumList = NULL;
            SHORT sDevCount = 0;
            if ( !ShowDevList( &pDevNumList, sDevCount ) )
            {
               cout << "Can not show the device list!" << endl;
               if ( pDevNumList != NULL )
               {
                  delete[] pDevNumList;
                  pDevNumList = NULL;
               }
               break;
            }
            
            //Secondly, open the device. If the device has openned, close it.
            if ( lDevHandle != 0 )
            {
               DRV_DeviceClose( &lDevHandle );
            }
            lDevHandle = SelectDevice( sDevCount );
            if ( 0 == lDevHandle )
            {
               cout << "Can not open the device!" << endl;
               delete[] pDevNumList;
               pDevNumList = NULL;
               break;
            }

            //Thirdly, Get count of DI ports
            ULONG lDataLen = sizeof( LONG );
            LONG lData = 0;
            LONG lErrCde = DRV_DeviceGetProperty(
                              lDevHandle,
                              CFG_DiPortCount,
                              &lData,
                              &lDataLen);
            if ( lErrCde != SUCCESS )
            {
               cout << "Can not get the DI port count!" << endl;
               ErrReport( lErrCde );
               delete[] pDevNumList;
               pDevNumList = NULL;
               break;
            }
            cout << "DI port count: " << lData << endl;

            //Fouthly, select ports and read the selected ports
            DWORD lPortStart = 0;
            DWORD lPortCount = 0;
            SelectPort( lPortStart, lPortCount, lData );
            if ( !ReadPorts( lDevHandle, lPortStart, lPortCount) )
            {
               cout << "Can not read the ports!" << endl;
               delete[] pDevNumList;
               pDevNumList = NULL;
               break;
            }

            //Finally, release memory.
            delete[] pDevNumList;
            pDevNumList = NULL;
         }
         break;
      case 'e':
      case 'E':
         {
            bKeepRun = FALSE;
         }
         break;
      default:
         {
            cout << "Invalid params. Please input again." << endl;
         }
         break;
      }
   }
   //Finally, close the device
   if ( lDevHandle != 0 )
   {
      DRV_DeviceClose( &lDevHandle );
   }
   return 0; 
}

// **************************************************************************
// Design Notes: Show the list of installed devices. 
//			Return TRUE for success or FALSE for failure. 
// --------------------------------------------------------------------------
BOOL ShowDevList( DWORD * *dwpDevNumList, SHORT & sDevCount)
{
   assert( dwpDevNumList != NULL );
   
   DEVLIST * pDevList = NULL;
   SHORT sDevNum = 0;
   LONG lErrCde = SUCCESS;
   
   //Firstly, get the count of installed devices and allocate memory.
   lErrCde = DRV_DeviceGetNumOfList( &sDevNum );
   if ( lErrCde != SUCCESS )
   {
      ErrReport( lErrCde );
      return FALSE;
   }
   pDevList = new DEVLIST[ sDevNum ];
   if ( NULL == pDevList )
   {
      cout << "System Error: " << "There are no enough memory!" << endl;
      return FALSE;
   }
   memset( pDevList, 0, sizeof(DEVLIST) * sDevNum );
   
   *dwpDevNumList = new DWORD[ sDevNum ];
   if ( NULL == dwpDevNumList )
   {
      cout << "System Error: " << "There are no enough memory!" << endl;
      delete[] pDevList;
      pDevList = NULL;
      return FALSE; 
   }
   memset( *dwpDevNumList, 0, sizeof(DWORD) * sDevNum );
   
   //Secondly, get the device list.
   SHORT sOutEntries = 0;
   lErrCde = DRV_DeviceGetList( pDevList, sDevNum, &sOutEntries );
   if ( lErrCde != SUCCESS )
   {
      ErrReport( lErrCde );
      return FALSE;
   }
   
   //Thirdly, show the devlist.
   for ( SHORT i = 0; i < sOutEntries; i++ )
   {
      cout << "Devcie" << i << ":  " << pDevList[i].szDeviceName << endl;
      (*dwpDevNumList)[i] = pDevList[i].dwDeviceNum;
   }
   
   //Finally, release memory.
   if ( pDevList != NULL )
   {
      delete[] pDevList;
      pDevList = NULL;
   }
   
   //How many devices we get really.
   sDevCount = sOutEntries;
   return TRUE;
}

// **************************************************************************
// Design Notes: Select a device according to the number user input.
//			Return the device handle for success or 0 for failure.
// --------------------------------------------------------------------------
LONG SelectDevice( SHORT sDevCount )
{
   cout << "Please input the number of the device you want to open: " << endl;
   cout << "Device: ";
   DWORD dwDevNum = 0;
   
   //Firstly, get the input number
   InputNumStream( dwDevNum );
   if ( (SHORT)dwDevNum >= sDevCount )
   {
      cout << "Invalid Device number, please confirm it." << endl;
      return 0L;
   }
   
   //Secondly, open the device
   LONG lErrCde = SUCCESS;
   LONG DevHandle = 0;
   lErrCde = DRV_DeviceOpen( dwDevNum, &DevHandle );
   if ( lErrCde != SUCCESS )
   {
      ErrReport( lErrCde );
      return 0L;
   }
   
   return DevHandle;
}

// **************************************************************************
// Design Notes: Let user input the start port and port count for operation.
// --------------------------------------------------------------------------
void SelectPort( DWORD & lStartPort, DWORD & lPortCount, DWORD lMaxCount )
{
   //Start port
   while ( 1 )
   {
      cout << "Please input the start port:  " ;
      InputNumStream( lStartPort );
      if ( lStartPort >= lMaxCount || lStartPort < 0 )
      {
         cout << "Please input a appropriate number!" << endl;
         continue;
      }
      break;
   }
   
   //Port count
   while( 1 )
   {
      cout << "Please input the port count:  ";
      InputNumStream( lPortCount );
      if ( ( lStartPort + lPortCount ) > lMaxCount || lPortCount <= 0 )
      {
         cout << "Please input a appropriate number!" << endl;
         continue;
      }
      break;
   }

}

// **************************************************************************
// Design Notes: Read the selected ports.
//          TRUE for success, FALSE for failure.
// --------------------------------------------------------------------------
BOOL ReadPorts( LONG lDevHandle, DWORD lPortStart, DWORD lPortCount )
{
   if ( 0 == lDevHandle )
   {
      cout << "Invalid params! Please open a device." << endl;
      return FALSE;
   }
   LONG lErrCde = SUCCESS;
   //Firstly, allocate memory for data buffer
   BYTE * pBuf = new BYTE[ lPortCount ];
   if ( NULL == pBuf )
   {
      cout << "System Error: " << "No enough memory!" << endl;
      return FALSE;
   }
   memset( pBuf, 0, sizeof(BYTE) * lPortCount );

   //Secondly, read the data
   lErrCde = AdxDioReadDiPorts( lDevHandle, lPortStart, lPortCount, pBuf );
   if ( lErrCde != SUCCESS )
   {
      ErrReport( lErrCde );
      return FALSE;
   }
   cout << "**************************Data(Hex)*********************" << endl;
   char szText[ 10 ];
   for ( DWORD i = 0; i < lPortCount; i++ )
   {
      if ( pBuf[ i ] <= 0xF )
      {
         wsprintf( szText, "0%X ", pBuf[ i ] );
      }
      else
      {
         wsprintf( szText, "%X ", pBuf[ i ] );
      }
      cout << "Port " << lPortStart + i << ":  " << szText << endl;
   }
   cout << "***************************End**************************" << endl;
   
   //Finally, release memory
   if ( pBuf != NULL )
   {
      delete[] pBuf;
      pBuf = NULL;
   }
   return TRUE;

}

// **************************************************************************
// Design Notes: Clear the get stream by advancing the get pointer of streambuf
// --------------------------------------------------------------------------
inline
void ClearStream()
{
   int nTemp = cin.rdbuf()->in_avail();
   cin.ignore( nTemp - 1 );
}

// **************************************************************************
// Design Notes: Get the input number.
// --------------------------------------------------------------------------
inline
void InputNumStream( DWORD & dwNum )
{
   char btTemp[ MAX_NUMLONG ] = { 0, 0, 0, 0 };
   cin.width( MAX_NUMLONG );
   cin >> btTemp;
   //clear the stream
   ClearStream();
   //Get the number
   dwNum = atoi( btTemp );
}

//---------------------------------------------------------------------------
inline
void ErrReport( LRESULT lErrCde )
{
   char szErrMsg[255];
   DRV_GetErrorMessage( lErrCde, szErrMsg );
   cout << "Driver Error: " << szErrMsg << endl;
}