C and C++ in CCS

yong zhang2

Other Parts Discussed in Thread: HALCOGEN

Hi:

Now I need to move the old C++ applicaplication program to the TMS570 MCU, I want to know that is it possible to use the functions of the C++ source files in the HCG created .c files in CCS porject? what about using the functions of .c file in the C++ files?

The applicaplication program has large amount of codes so it is impossible to rewrite it in C language. I tried to write a simple CPP file in the HCG project and call it in the sys_main, the complier indicates that unresolved symbols errors. Is there any wrong settings led to that?

over 12 years ago

0 Jean-Marc Mifsud over 12 years ago

TI__Mastermind 22375 points

Yong,

I've forwarded your question to our Halcogen team. They will be back to you shortly.

0 Cody Addison over 12 years ago

TI__Expert 4540 points

Yong,

You will need to declare the functions you want to use in C as extern "C" in the C++ files.

extern "C" {
void foo();
}

If the function is defined in a C++ file it will be callable from C. If the function is defined in a C file it will be callable from C++.

0 yong zhang2 over 12 years ago in reply to Cody Addison

Expert 1305 points

Eh.. if I want to use the C++ member functions in the C files, is that possible?

0 Cody Addison over 12 years ago in reply to yong zhang2

TI__Expert 4540 points

You cannot call the member function directly, but you can create a C++ wrapper function that takes a pointer to the object. Take a look at this resource. It includes many examples on how to mix C and C++ code.

http://www.parashift.com/c++-faq/mixing-c-and-cpp.html

0 yong zhang2 over 12 years ago in reply to Cody Addison

Expert 1305 points

Thanks a lot ~

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C and C++ in CCS