Add noise figure plugin

2026-07-26 03:54:30 -04:00 · 2021-06-09 16:17:59 +01:00
parent 016ec01826
commit 97669585ad
48 changed files with 6136 additions and 0 deletions
@@ -0,0 +1,136 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2021 Jon Beniston, M7RCE                                        //
+//                                                                               //
+// This program is free software; you can redistribute it and/or modify          //
+// it under the terms of the GNU General Public License as published by          //
+// the Free Software Foundation as version 3 of the License, or                  //
+// (at your option) any later version.                                           //
+//                                                                               //
+// This program is distributed in the hope that it will be useful,               //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
+// GNU General Public License V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <QDebug>
+
+#include "visa.h"
+
+#ifdef _MSC_VER
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+VISA::VISA() :
+    m_defaultRM(0),
+    viOpenDefaultRM(nullptr),
+    viOpen(nullptr),
+    viClose(nullptr),
+    viPrintf(nullptr),
+    viScanf(nullptr),
+    m_available(false)
+{
+#ifdef _MSC_VER
+    const char *visaName = "visa32.dll";  // Loads visa64.dll on WIN64
+#else
+    const char *visaName = "visakt32.so";  // Keysight library
+#endif
+
+    visaLibrary = libraryOpen(visaName);
+    if (visaLibrary)
+    {
+        viOpenDefaultRM = (ViStatus (WINAPI *)(ViPSession)) libraryFunc(visaLibrary, "viOpenDefaultRM");
+        viOpen = (ViStatus (WINAPI *)(ViSession sesn, ViRsrc name, ViAccessMode mode, ViUInt32 timeout, ViPSession vi)) libraryFunc(visaLibrary, "viOpen");
+        viClose = (ViStatus (WINAPI *)(ViObject vi)) libraryFunc(visaLibrary, "viClose");
+        viPrintf = (ViStatus (WINAPI *) (ViSession vi, ViString writeFmt, ...))  libraryFunc(visaLibrary, "viPrintf");
+        viScanf = (ViStatus (WINAPI *) (ViSession vi, ViString writeFmt, ...))  libraryFunc(visaLibrary, "viScanf");
+
+        if (viOpenDefaultRM && viOpen && viClose && viPrintf) {
+            m_available = true;
+        }
+    }
+    else
+    {
+        qDebug() << "VISA::VISA: Unable to load " << visaName;
+    }
+}
+
+ViSession VISA::openDefault()
+{
+    if (isAvailable() && (m_defaultRM == 0))
+    {
+        viOpenDefaultRM(&m_defaultRM);
+        return m_defaultRM;
+    }
+    else
+    {
+        return m_defaultRM;
+    }
+}
+
+void VISA::closeDefault()
+{
+    if (isAvailable())
+    {
+        viClose(m_defaultRM);
+        m_defaultRM = 0;
+    }
+}
+
+ViSession VISA::open(const QString& device)
+{
+    ViSession session;
+    if (isAvailable())
+    {
+        if (VI_SUCCESS == viOpen(m_defaultRM, device.toLatin1().data(), VI_NULL, VI_NULL, &session))
+        {
+            qDebug() << "VISA::open: Opened VISA device: " << device;
+            return session;
+        }
+        else
+        {
+            qDebug() << "VISA::open: Failed to open VISA device: " << device;
+        }
+    }
+    return 0;
+}
+
+void VISA::close(ViSession session)
+{
+    if (isAvailable()) {
+        viClose(session);
+    }
+}
+
+
+#ifdef _MSC_VER
+
+void *VISA::libraryOpen(const char *filename)
+{
+    HMODULE module;
+    module = LoadLibrary ((LPCSTR)filename);
+    return module;
+}
+
+void *VISA::libraryFunc(void *library, const char *function)
+{
+    return GetProcAddress ((HMODULE)library, function);
+}
+
+#else
+
+void *VISA::libraryOpen(const char *filename)
+{
+    return dlopen (filename, RTLD_LAZY);
+}
+
+void *VISA::libraryFunc(void *library, const char *function)
+{
+    return dlsym (library, function);
+}
+
+#endif