adcards.c

这是我编写的深圳地铁S335型司机控制器的检测程序

// #########################################################################
// *************************************************************************
//           Copyright (C) 2002-2004, Xi'an KeXing M&C Ltd. Corp.
//   THIS IS AN UNPUBLISHED WORK CONTAINED CONFIDENTIAL, AND PROPRIETARY
//     INFORMATION WHICH IS THE PROPERTY OF Xi'an KeXing M&C Ltd. Corp.
// ANY DISCLOSURE, USE, OR REPRODUCTION, WITHOUT WRITTERN AUTHORIZATION FROM
//            Xi'an KeXing M&C Ltd. Corp., IS STRICT
// #########################################################################
// *************************************************************************
#include <ansi_c.h>
#include <windows.h>
#include <userint.h>
#include "ADCards.h"

//------------------------------------------------------------------------------------------------
//
int __stdcall ADCards_Open(LPT_DAQCard pDev)
{
   LRESULT     ErrCde;         // Return error code
   
   if (pDev->hDevice != 0)
      return 0;
   
   ErrCde = DRV_DeviceOpen (pDev->dwIndex, (LONG far*)&pDev->hDevice);
   if (ErrCde != SUCCESS)
      return -1;
   
   return 0;
}

//------------------------------------------------------------------------------------------------
//
int __stdcall ADPCards_Close(LPT_DAQCard pDev)
{
   LRESULT     ErrCde;         // Return error code
   
   if (pDev->hDevice == NULL)
      return 0;
   
   ErrCde = DRV_DeviceClose ((LONG far*)&pDev->hDevice);
   if (ErrCde != SUCCESS)
      return -1;
   
   pDev->hDevice = NULL;
   
   return 0;
}

//------------------------------------------------------------------------------------------------
//
int __stdcall ADCards_AIConfig(LPT_DAQCard pDev, USHORT ushChannel)
{
   LRESULT     ErrCde;         // Return error code
   PT_AIConfig ptAIConfig;     // structure for AIConfig table

   if ( pDev->hDevice == NULL )
      return -1;

   //
   // configures the gain for the specifed analog input channel
   //
   ptAIConfig.DasGain = pDev->usGainCode;
   ptAIConfig.DasChan = ushChannel;

   ErrCde = DRV_AIConfig( (LONG)pDev->hDevice, &ptAIConfig );
   if ( ErrCde != 0 )
      return -1;
   
   return 0;
}

//------------------------------------------------------------------------------------------------
//
int __stdcall ADCards_AIValue(LPT_DAQCard pDev, USHORT ushChannel, DWORD nCount, double* pdfVoltage)
{
   LRESULT     ErrCde;         // Return error code
   PT_AIBinaryIn ptAIVoltageIn;  // structure for AIVoltageIn table
   DWORD       i;
   double      dfValue;      
   float       fVoltage;
   short       nData;
   
   if ( pDev->hDevice == NULL )
      return -1;
   if ( nCount <= 0 )
      return -1;
   //
   // reads an analog input channel
   //
   ADCards_AIConfig(pDev, ushChannel);
   dfValue = 0.0;
   for ( i = 0; i < nCount; i ++ )
   {
      ptAIVoltageIn.chan = ushChannel;
      ptAIVoltageIn.reading = &nData;
      ptAIVoltageIn.TrigMode = 0;               // internal trigger
//      ptAIVoltageIn.voltage = (float far *)&fVoltage;
      
      ErrCde = DRV_AIBinaryIn( (LONG)pDev->hDevice, &ptAIVoltageIn );
      if ( ErrCde != 0 )
	      return -1;
//      dfValue += fVoltage;
   }
   
   *pdfVoltage = nData;

   return 0;
}

//------------------------------------------------------------------------------------------------
//
int __stdcall ADCards_DOBit(LPT_DAQCard pDev, short ushChannel, short ushState)
{
   LRESULT           ErrCde;         // Return error code
   PT_DioWriteBit    ptDioWriteBit;

   if ( pDev->hDevice == NULL )
   {
      return -1;
   }
   // output bit
   ptDioWriteBit.port  = ushChannel / 8;
   ptDioWriteBit.bit   = ushChannel % 8;
   ptDioWriteBit.state = ushState;
   
   ErrCde = DRV_DioWriteBit( (LONG)pDev->hDevice, &ptDioWriteBit );
   if ( ErrCde != 0)
   {
      return -1;
   }
   return 0;
}

//------------------------------------------------------------------------------------------------
//
int __stdcall ADCards_DIBit(LPT_DAQCard pDev, short ushChannel, short* pusState)
{
   LRESULT           ErrCde;         // Return error code
   PT_DioReadBit     ptDioReadBit;

   if ( pDev->hDevice == NULL )
   {
      return -1;
   }
   // output bit
   ptDioReadBit.port  = ushChannel / 8;
   ptDioReadBit.bit   = ushChannel % 8;
   ptDioReadBit.state = pusState;
   
   ErrCde = DRV_DioReadBit( (LONG)pDev->hDevice, &ptDioReadBit );
   if ( ErrCde != 0)
   {
      return -1;
   }
   return 0;
}
//------------------------------------------------------------------------------------------------