CLI in C++ project

[CodeLoader]

Hi,

I'm trying to port a project using nRF5 SDK to C++. One of the desired features would be interaction with the app via J-Link RTT using the command line interface.

CLI library is very easy to use, but it's also very hard-wired to C programming style. I've tried somewhat porting CLI macros like NRF_CLI_CMD_REGISTER to C++ and didn't succeed because it uses named section variables. Trying to use extern "C" and C-style wrappers for C++ functions also didn't get rid of the errors.

I can't either execute C++ functions from the CLI commands or register them. 

Could you point me in some direction if anybody used command line in nRF C++ projects? Porting CLI library or perhaps using another command line handling library, either should be fine

[Einar Thorsrud]

Hi,

The nRF5 SDK does not support C++, and as you have seen there are quite a few modules that are not easily converted to valid C++ code. This means that you would want to keep the SDK code as C even if you write the rest of your application as C++. You also have to write some glue code and rewrite parts of the CLI code to handle the incompatibilities. Unfortunately, we have not done this task, and do not have a guide.

[Torsten Robitzki]

In general, there is no reason to not use C++ with nRF but C++ and C doensn't mix always very well. I would try to seperate such an application into a C part and into a C++ part. With your CLI example, try to split the application into a set of extern "C" C++ functions and a C part, that ueses the CLI library which then calls the C++ functions.

[jakub]

Hi,

If you are using GCC there is already a solution waiting for you. Please check this topic:

devzone.nordicsemi.com/.../173900