C++與 Fluke5500A設備通過GPIB-USB-B通信的經驗積累

===========以下內容來自：C++與 Fluke5500A設備通過GPIB-USB-B通信的經驗積累 - J·Marcus - 博客園 (cnblogs.com)=======START============

1.需要安裝NI-488.2.281，安裝好了之后，GPIB-USB-B的驅動就自動安裝好了

注意版本問題，之前安裝了NI-488更高的版本，結果驅動安不上。

2.在C:\Program Files\IVI Foundation\VISA目錄下，搜索visa32.lib和visa.h、visatype.h

將庫和頭文件拷貝到程序目錄就可以引用了

#include "visa.h"? ? ?#pragma comment(lib, "visa32.lib")

3.常用的庫函數：

/*- Resource Manager Functions and Operations -------------------------------*/ViStatus _VI_FUNC  viOpenDefaultRM (ViPSession vi);
ViStatus _VI_FUNC  viFindRsrc      (ViSession sesn, ViConstString expr, ViPFindList vi,ViPUInt32 retCnt, ViChar _VI_FAR desc[]);
ViStatus _VI_FUNC  viFindNext      (ViFindList vi, ViChar _VI_FAR desc[]);
ViStatus _VI_FUNC  viParseRsrc     (ViSession rmSesn, ViConstRsrc rsrcName,ViPUInt16 intfType, ViPUInt16 intfNum);
ViStatus _VI_FUNC  viParseRsrcEx   (ViSession rmSesn, ViConstRsrc rsrcName, ViPUInt16 intfType,ViPUInt16 intfNum, ViChar _VI_FAR rsrcClass[],ViChar _VI_FAR expandedUnaliasedName[],ViChar _VI_FAR aliasIfExists[]);
ViStatus _VI_FUNC  viOpen          (ViSession sesn, ViConstRsrc name, ViAccessMode mode,ViUInt32 timeout, ViPSession vi);/*- Resource Template Operations --------------------------------------------*/ViStatus _VI_FUNC  viClose         (ViObject vi);
ViStatus _VI_FUNC  viSetAttribute  (ViObject vi, ViAttr attrName, ViAttrState attrValue);
ViStatus _VI_FUNC  viGetAttribute  (ViObject vi, ViAttr attrName, void _VI_PTR attrValue);
ViStatus _VI_FUNC  viStatusDesc    (ViObject vi, ViStatus status, ViChar _VI_FAR desc[]);
ViStatus _VI_FUNC  viTerminate     (ViObject vi, ViUInt16 degree, ViJobId jobId);ViStatus _VI_FUNC  viLock          (ViSession vi, ViAccessMode lockType, ViUInt32 timeout,ViConstKeyId requestedKey, ViChar _VI_FAR accessKey[]);
ViStatus _VI_FUNC  viUnlock        (ViSession vi);
ViStatus _VI_FUNC  viEnableEvent   (ViSession vi, ViEventType eventType, ViUInt16 mechanism,ViEventFilter context);
ViStatus _VI_FUNC  viDisableEvent  (ViSession vi, ViEventType eventType, ViUInt16 mechanism);
ViStatus _VI_FUNC  viDiscardEvents (ViSession vi, ViEventType eventType, ViUInt16 mechanism);
ViStatus _VI_FUNC  viWaitOnEvent   (ViSession vi, ViEventType inEventType, ViUInt32 timeout,ViPEventType outEventType, ViPEvent outContext);
ViStatus _VI_FUNC  viInstallHandler(ViSession vi, ViEventType eventType, ViHndlr handler,ViAddr userHandle);
ViStatus _VI_FUNC  viUninstallHandler(ViSession vi, ViEventType eventType, ViHndlr handler,ViAddr userHandle);/*- Basic I/O Operations ----------------------------------------------------*/ViStatus _VI_FUNC  viRead          (ViSession vi, ViPBuf buf, ViUInt32 cnt, ViPUInt32 retCnt);
ViStatus _VI_FUNC  viReadAsync     (ViSession vi, ViPBuf buf, ViUInt32 cnt, ViPJobId  jobId);
ViStatus _VI_FUNC  viReadToFile    (ViSession vi, ViConstString filename, ViUInt32 cnt,ViPUInt32 retCnt);
ViStatus _VI_FUNC  viWrite         (ViSession vi, ViConstBuf  buf, ViUInt32 cnt, ViPUInt32 retCnt);
ViStatus _VI_FUNC  viWriteAsync    (ViSession vi, ViConstBuf  buf, ViUInt32 cnt, ViPJobId  jobId);
ViStatus _VI_FUNC  viWriteFromFile (ViSession vi, ViConstString filename, ViUInt32 cnt,ViPUInt32 retCnt);
ViStatus _VI_FUNC  viAssertTrigger (ViSession vi, ViUInt16 protocol);
ViStatus _VI_FUNC  viReadSTB       (ViSession vi, ViPUInt16 status);
ViStatus _VI_FUNC  viClear         (ViSession vi);/*- Formatted and Buffered I/O Operations -----------------------------------*/ViStatus _VI_FUNC  viSetBuf        (ViSession vi, ViUInt16 mask, ViUInt32 size);
ViStatus _VI_FUNC  viFlush         (ViSession vi, ViUInt16 mask);ViStatus _VI_FUNC  viBufWrite      (ViSession vi, ViConstBuf  buf, ViUInt32 cnt, ViPUInt32 retCnt);
ViStatus _VI_FUNC  viBufRead       (ViSession vi, ViPBuf buf, ViUInt32 cnt, ViPUInt32 retCnt);ViStatus _VI_FUNCC viPrintf        (ViSession vi, ViConstString writeFmt, ...);
ViStatus _VI_FUNC  viVPrintf       (ViSession vi, ViConstString writeFmt, ViVAList params);
ViStatus _VI_FUNCC viSPrintf       (ViSession vi, ViBuf buf, ViConstString writeFmt, ...);
ViStatus _VI_FUNC  viVSPrintf      (ViSession vi, ViBuf buf, ViConstString writeFmt,ViVAList parms);ViStatus _VI_FUNCC viScanf         (ViSession vi, ViConstString readFmt, ...);
ViStatus _VI_FUNC  viVScanf        (ViSession vi, ViConstString readFmt, ViVAList params);
ViStatus _VI_FUNCC viSScanf        (ViSession vi, ViConstBuf buf, ViConstString readFmt, ...);
ViStatus _VI_FUNC  viVSScanf       (ViSession vi, ViConstBuf buf, ViConstString readFmt,ViVAList parms);ViStatus _VI_FUNCC viQueryf        (ViSession vi, ViConstString writeFmt, ViConstString readFmt, ...);
ViStatus _VI_FUNC  viVQueryf       (ViSession vi, ViConstString writeFmt, ViConstString readFmt, ...);

具體怎么調用百度可以搜到例程。

安裝NI-488以后也會安裝例程。

我的代碼：

void c_gbip_demo_dlg::on_bn_clicked_conn()
{ViStatus error = viOpenDefaultRM(&m_vi_session_rm);if (error != VI_SUCCESS) {return;}error == viOpen(m_vi_session_rm, "GPIB0::4::INSTR", VI_EXCLUSIVE_LOCK, VI_NULL, &m_vi_session);if (error== VI_SUCCESS){char receiveBufferArrary[256] = { 0 };viPrintf(m_vi_session, "*RST\n");                        //發送復位命令error = viPrintf(m_vi_session, "*IDN?\n");               //發送讀取設備信息命令viScanf(m_vi_session, "%t", &receiveBufferArrary);UpdateData(FALSE);}else{//MessageBox("連接設備失敗！", "提示", MB_OK | MB_ICONWARNING);}return ;
}

注意，viOpen的第二個參數我寫的GPIB0::4::INSTR。這個參數，可以打開VISA Interactive Control查看到：

viOpen調用成功后，就連接成功了，之后就是命令發送、接收的問題了。

4.具體命令的寫法，要依據具體設備的程序員手冊來確定。

===========以上內容來自：C++與 Fluke5500A設備通過GPIB-USB-B通信的經驗積累 - J·Marcus - 博客園 (cnblogs.com)=========END============