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No RTX task info in uVision Thread Viewer when compiler changed to c++

Paul Heays

I have a project that uses RTX and Keil middle-ware running on a NXP 43xx processor. I have recently changed the compiler settings from C to C++ due to incorporating a commercial library that is written in C++. The project now complies and runs property but now no RTX task information is displayed in the uVision debugger “System and Thread Viewer” window.

To remove compiler errors I had to modify all of the global variable definitions in the library interface modules, RTX_lib.c, Net_lib.c and File_lib.c as in this example:

Original definition

U32 const os_trv = OS_TRV;

Modified definition

#ifdef __cplusplus
     extern "C" U32 const os_trv = OS_TRV;
#else   // CHRISB
     U32 const os_trv = OS_TRV;
#endif

Originally I was using uVision v4.72 then upgraded to uVision v5.13 with legacy support. Both compiler versions have the same problem of not showing task information.
I have double checked all of the project settings and other than “—cpp” compiler directive everything is the same.

Any help would be appreciated. Thanks

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