QT+RSVisa控制LXI仪器

1.下载并安装visa

R&S®VISA - Rohde & Schwarz China

 2.安装后的目录说明

安装了64位visa会默认把32位的安装上；

64位库和头文件目录为：C:\Program Files\IVI Foundation

32位库和头文件目录为：C:\Program Files (x86)\IVI Foundation

以64位为例：

lib：【用Visa32.lib和RsVisa32.lib都可以】

 h：【包含visa.h即可】

 dll：

3.QT的pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++17
DEFINES += RSVISA_EXTENSION  #如果需要查找设备需要把这个宏打开
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0SOURCES += \main.cpp \MainWindow.cppHEADERS += \MainWindow.hFORMS += \MainWindow.ui# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += targetcontains(QT_ARCH, i386){message("32-bit")INCLUDEPATH += $$PWD/rsvisa/x32/includeLIBS += -L$$PWD/rsvisa/x32/lib/ -lRsVisa32
}else{message("64-bit")INCLUDEPATH += $$PWD/rsvisa/x64/includeLIBS += -L$$PWD/rsvisa/x64/lib/ -lRsVisa32
}

注意：如果需要查找设备需要把这个宏：RSVISA_EXTENSION打开

4.MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include "visa.h"QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();public slots:void setDevices(QStringList items);void setStatus(const QString& msg);void setPortSource(int port);void setPortBoth(int port);void setPortAll(int port);void setPortNone(int port);private://初始化void init();// 发送数据void writeData(QString data);// 读取数据void readData(QByteArray& data);private slots:void on_pushButton_find_clicked();void on_pushButton_open_clicked();private:Ui::MainWindow *ui;ViSession m_defRM     = -1;ViSession m_vi        = -1;
};
#endif // MAINWINDOW_H

5.MainWindow.cpp

#include "MainWindow.h"
#include "ui_MainWindow.h"
#include <QDebug>
#include <thread>MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);(void)init();
}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::setDevices(QStringList items)
{if(!items.isEmpty()){ui->comboBox_devices->clear();ui->comboBox_devices->addItems(items);}
}void MainWindow::setStatus(const QString &msg)
{ui->statusbar->showMessage(msg);
}void MainWindow::setPortSource(int port)
{//[1] 使端口可以与VNA源连接QString cmd = QString(":PORT%1:FUNCtion %2").arg(port).arg("SOURce");writeData(cmd);
}void MainWindow::setPortBoth(int port)
{//[1] 使端口测量路可以与VNA测量接收机连接QString cmd = QString(":PORT%1:FUNCtion %2").arg(port).arg("MEASure");writeData(cmd);//[2] 使端口参考路可以与VNA参考接收机连接cmd = QString(":PORT%1:FUNCtion %2").arg(port).arg("REFerence");writeData(cmd);
}void MainWindow::setPortAll(int port)
{//[1] 使端口源、测量路、参考路可以与VNA的源和接收机连接QString cmd = QString(":PORT%1:FUNCtion %2").arg(port).arg("ALL");writeData(cmd);
}void MainWindow::setPortNone(int port)
{//[1] 使端口测量路可以与VNA测量接收机连接QString cmd = QString(":PORT%1:FUNCtion %2").arg(port).arg("NONE");writeData(cmd);
}void MainWindow::init()
{//[1] visa设备管理器初始化if(VI_SUCCESS != viOpenDefaultRM(&m_defRM)){setStatus("open rm failed");}else{setStatus("open rm success");}//[2] 2x16物理端口按钮点击初始化auto btnList1 = ui->groupBox->findChildren<QPushButton*>();     //group1for (const auto btn : btnList1){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}auto btnList2 = ui->groupBox_2->findChildren<QPushButton*>();   //group2for (const auto btn : btnList2){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}//[3] 4x8物理端口按钮点击初始化auto btnList3 = ui->groupBox_3->findChildren<QPushButton*>();   //group1for (const auto btn : btnList3){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}auto btnList4 = ui->groupBox_4->findChildren<QPushButton*>();   //group2for (const auto btn : btnList4){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}auto btnList5 = ui->groupBox_5->findChildren<QPushButton*>();   //group3for (const auto btn : btnList5){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}auto btnList6 = ui->groupBox_6->findChildren<QPushButton*>();   //group4for (const auto btn : btnList6){QObject::connect(btn, &QPushButton::clicked, this, [this, btn](){setPortAll(btn->text().toInt());});}
}void MainWindow::writeData(QString data)
{do{//[1] 资源管理器判断if(m_defRM <= 0){setStatus("m_defRM is null");break;}//[2] 设备判断if(m_vi <= 0){setStatus("writeData m_vi is null");break;}//[3] 确保以回车结束if(!data.endsWith("\n")){data = data + "\n";}//[4] 写数据if(VI_SUCCESS != viPrintf(m_vi, data.toStdString().data())){setStatus("writeData failed");break;}else{ui->textEdit->append("write:"+data);}}while(0);
}void MainWindow::readData(QByteArray &data)
{do{//[1] 资源管理器判断if(m_defRM <= 0){setStatus("m_defRM is null");break;}//[2] 设备判断if(m_vi <= 0){setStatus("m_vi is null");break;}//[3] 读数据int bufLeng = 1024*4;unsigned char buf[1024*4];long unsigned int retcount;if(VI_SUCCESS != viRead(m_vi, buf, bufLeng, &retcount)){setStatus("readData failed");break;}data = QByteArray::fromRawData((char*)buf, retcount);}while(0);
}void MainWindow::on_pushButton_open_clicked()
{do{if("打开"==ui->pushButton_open->text()){setStatus("open devices");QString deviceName = ui->comboBox_devices->currentText();//[1] 资源管理器判断if(m_defRM <= 0){setStatus("m_defRM is null");break;}//[2] 设备恢复if(m_vi > 0){viClose(m_vi);m_vi = -1;}//[3] 打开设备int timeout = 20000;auto ret = viOpen(m_defRM, deviceName.toStdString().data(), 0, timeout, &m_vi);if(VI_SUCCESS != ret){setStatus("viOpen failed");break;}ui->pushButton_open->setText("已打开");//[4] 设置属性viSetAttribute(m_vi, VI_ATTR_TMO_VALUE, timeout);//设置读写超时}else{setStatus("close devices");auto ret = viClose(m_vi);if(VI_SUCCESS != ret){setStatus("viClose failed");break;}else{ui->pushButton_open->setText("打开");setStatus("viClose success");}}}while(0);
}void MainWindow::on_pushButton_find_clicked()
{setStatus("find devices");auto findDeivesFun = [this](){QStringList rsrcList;do{//[1] 资源管理器判断if(m_defRM <= 0){setStatus("m_defRM is null");break;}//[2] 设置查找属性ViAttrState searchAttributes = VI_RS_FIND_MODE_CONFIG | VI_RS_FIND_MODE_VXI11 | VI_RS_FIND_MODE_MDNS;auto ret = viSetAttribute(m_defRM, VI_RS_ATTR_TCPIP_FIND_RSRC_MODE, searchAttributes);if(VI_SUCCESS != ret){setStatus("viSetAttribute failed");break;}//[3] 查找设备ViUInt32 retCnt;ViChar desc[256];ret = viFindRsrc(m_defRM, "?*", &m_vi, &retCnt, desc);if(VI_SUCCESS != ret){setStatus("viFindRsrc failed");break;}rsrcList.push_back(desc);for (ViInt16 i = 0; i < static_cast<ViInt16>(retCnt)-1; ++i){if(VI_SUCCESS == viFindNext(m_vi, desc)){rsrcList.push_back(QString(desc));}}}while(0);//[4] 如果查找到了VXI设备,则增加一个通过SOCKET控制它的方式QStringList socketItems;for(auto item : rsrcList){if(-1 != item.indexOf("inst0") && -1 != item.indexOf("INSTR")){auto newItem = item.replace("inst0", "5025");newItem = newItem.replace("INSTR", "SOCKET");socketItems.append(newItem);}}rsrcList.append(socketItems);QMetaObject::invokeMethod(this, "setDevices", Qt::QueuedConnection, Q_ARG(QStringList, rsrcList));};std::thread t(findDeivesFun);t.detach();
}