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83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Jon Beniston, M7RCE //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_VISA_H
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#define INCLUDE_VISA_H
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// Minimal implementation of VISA specification (just the bits we need so far)
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// https://www.ivifoundation.org/docs/vpp432_2016-02-26.pdf
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#include "export.h"
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typedef char ViChar;
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typedef ViChar * ViPChar;
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typedef signed long ViInt32;
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typedef unsigned long ViUInt32;
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typedef ViPChar ViString;
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typedef ViInt32 ViStatus;
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typedef ViUInt32 ViObject;
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typedef ViObject ViSession;
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typedef ViSession * ViPSession;
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typedef ViString ViRsrc;
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typedef ViUInt32 ViAccessMode;
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#define VI_SUCCESS 0
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#define VI_TRUE 1
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#define VI_FALSE 0
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#define VI_NULL 0
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// We dynamically load the visa dll, as most users probably do not have it
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// Note: Can't seem to call viOpenDefaultRM/viClose in constructor / destructor of global instance
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class SDRBASE_API VISA {
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public:
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// Default session
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ViSession m_defaultRM;
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// Function pointers to VISA API for direct calls
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ViStatus (*viOpenDefaultRM) (ViPSession vi);
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ViStatus (*viOpen) (ViSession sesn, ViRsrc name, ViAccessMode mode, ViUInt32 timeout, ViPSession vi);
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ViStatus (*viClose) (ViObject vi);
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ViStatus (*viPrintf) (ViSession vi, ViString writeFmt, ...);
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ViStatus (*viScanf) (ViSession vi, ViString readFmt, ...);
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VISA();
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ViSession openDefault();
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void closeDefault();
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ViSession open(const QString& device);
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void close(ViSession session);
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QStringList processCommands(ViSession session, const QString& commands);
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// Is the VISA library available
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bool isAvailable() const
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{
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return m_available;
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}
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private:
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bool m_available;
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protected:
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void *visaLibrary;
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void *libraryOpen(const char *filename);
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void *libraryFunc(void *library, const char *function);
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};
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#endif // INCLUDE_VISA_H
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