GPIB-VC编程

末蓝、 2022-07-15 01:45 279阅读 0赞

Compiling and Linking VISA Programs (C/C++)  
This section provides a summary of important compiler- specific considerations when developing Win32 applications.  
1 . Linking to VISA Libraries  
Your application must link to the VISA import library as follows, assuming default installation directories and Microsoft compilers:  
C:\\Program Files\\VISA\\winnt\\lib\\msc\\visa32.lib The following steps will help you do this. This information is specific to your development  
  
environment.  
Microsoft Visual C++ Version 6.0 Development Environment  
1 Use the File menu to create a new project or open an existing project.  
2 Select Project > Settings from the menu and click the C/C++ tab.  
3 Select Code Generation from the Category list box and select Multi-Threaded using DLL from the Use Run-Time Libraries list box. (VISA requires these definitions for Win32.) Click OK to close the dialog box.  
4 Select Project > Settings from the menu. Click the Link tab and add visa32.lib to the Object/Library Modules list box. Optionally, you may add the library directly to your project file. Click OK to close the dialog box.  
5 You may want to add the include files and library files  
search paths. They are set as follows:  
• Select Tools > Options from the menu.  
• Click the Directories tab to set the include file path.  
• Select Include Files from the Show Directories For list box.  
• Click at the bottom of the list box and type:  
C:\\Program Files\\VISA\\winnt\\include  
(This assumes that you used the default installation  
location for VISA.)  
• Select Library Files from the Show Directories For list box.  
• Click at the bottom of the list box and type:  
C:\\Program Files\\VISA\\winnt\\lib\\msc  
(This assumes that you used the default installation  
location for VISA.)  
6 Add or create your C or C++ source files. For example, to build the sample described below, select Project > Add to Project > Files... and type or browse to C:\\Program Files\\Agilent\\IO Libraries Suite\\ ProgrammingSamples\\C\\VISA\\idn.c.  
7 Click Build > Rebuild All to build the VISA program.  
  
示例：电源型号:Agilent GPIB线 开发环境为VS2010  
  
1.首先安装GPIB驱动，驱动安装文件比较大，请自行下载安装，我用的NI驱动  
  
2.编写一个Win32程序，实现打开和关闭电源的功能。  
主要代码如下：

//包含VISA头文件和库文件
    #include "WinNT//include//visa.h"                               
    #pragma comment(lib, "WinNT//lib//msc//visa32.lib")

电源初始化函数

BOOL CXXXDlg::InitPower()
    {
    	
    	char chStatusDesc[_MAX_DIR] = {0};
    	int retCnt=0;	
    	char instrDesc[100]={0};	
    	ViFindList find_list;	
    	float voltSetting, currSetting;
    	voltSetting = atof(ini_powervolt);
    	currSetting = atof(ini_powercurrent);
    	VISAstatus=viOpenDefaultRM(&defrm);
    	if (VISAstatus != VI_SUCCESS)
    	{
    		return FALSE;
    	}
    	VISAstatus = viFindRsrc(defrm,"GPIB?*INSTR",&find_list,(ViPUInt32)&retCnt, instrDesc);
    	
    	VISAstatus=viOpen(defrm,instrDesc, VI_NULL, VI_NULL, &session);
    
    
    	if (VISAstatus!=VI_SUCCESS)
    	{
    		return FALSE;
    	}
    	//Set voltage
    	viPrintf(session,"VOLT %f \n",voltSetting);
    
    
    	//Set current level
    	viPrintf(session,"CURR %f \n",currSetting);
    	return TRUE;
    }

打开电源

void CXXXDlg::OnBnClickedBtnPowerOn()
    {
    	if (!InitPower())
    	{
    		AfxMessageBox("Init Power Fail,Please Check the GPIB Connected!");
    		return;
    	}
    
    
    	viPrintf(session,"OUTP ON \n");
    }

关闭电源

void CXXXDlg::OnBnClickedBtnPoweroff()
    {
    	if (!InitPower())
    	{
    		AfxMessageBox("Init Power Fail,Please Check the GPIB Connected!");
    		return;
    	}
    
    
    	viPrintf(session,"OUTP OFF \n");
    }

上面的示例只是简单的展示了开启和关闭电源的基本功能，实际开始时需要根据具体需求来扩展。