PicoScope 7 Software
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ps2000aOpenUnit not found in libps2000a.dylib by QLibrary
ps2000aOpenUnit not found in libps2000a.dylib by QLibrary
I am integrating PicoScope support into a QT application. Using QLibrary, I am able to load the library but when I attempt to get a pointer to the ps2000aOpenUnit function, the function is not found.
When I call nm -gUj .../libps2000a.dylib, of course the symbol is listed.
QLibrary requires that the library be compiled in C. All the provided sample code is in C, so I assume so. Can someone confirm that the dynamic libraries are compiled with a C compiler and not a C++ compiler? Or am I doing something else wrong?
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//open unit and show splash screen
ps2000aLib = new QLibrary( QString(PICOSCOPE_LIBRARY_DIR_PATH) + QString(PICOSCOPE2000A_LIBRARY) );
if( ! ps2000aLib->isLoaded() ) {
qDebug() << "ps2000a dll did not load";
return;
}
typedef PICO_STATUS (*PS2000aOpenUnit)( int16_t*, int8_t*);
PS2000aOpenUnit ps2000aOpenUnit = (PS2000aOpenUnit) ps2000aLib->resolve("ps2000aOpenUnit");
if( ! ps2000aOpenUnit ) {
qDebug() << "ps2000aOpenUnit function not found in library";
return;
}
PICO_STATUS psStatus = ps2000aOpenUnit( &unitOpened_m.handle, unitOpened_m.serial );QLibrary requires that the library be compiled in C. All the provided sample code is in C, so I assume so. Can someone confirm that the dynamic libraries are compiled with a C compiler and not a C++ compiler? Or am I doing something else wrong?
Re: ps2000aOpenUnit not found in libps2000a.dylib by QLibrary
From the Programmer's Guide
Code: Select all
The ps2000a API exports a number of functions for you to use in your own applications. All functions are C
functions using the standard call naming convention (__stdcall). They are all exported with both decorated
and undecorated namesMartyn
Technical Support Manager
Technical Support Manager
Re: ps2000aOpenUnit not found in libps2000a.dylib by QLibrary
Hi Martyn, Thanks for the additional information. The issue was more related to QT. I was missing the library path in my DYLD_LIBRARY_PATH environment variable. Once that included, it worked. I got this information from the QT user forum.