Including C++ library in C project?

[angel]

Hi Nordic,

I want to include this library (github.com/.../MPU6050.cpp) in my project, which is an evolution from ant_ broadcast example, in C. However, and after reading several related posts, I am not able to compile my project when I add this library. Can anyone give me some support with this? Otherwise I would have to re-write the whole library in C, and this task is not an easy one..

Thanks a lot for your help!

EDIT: I can properly do, with my own C library, reads of all the registers in MPU6050. What I cannot do is use the DMP at all, and I want the acceleration with no gravity, which can only be done if you mix data from accelerometer and gyroscope and do some kind of filtering. The DMP does it internally, but the library I referred to is needed.

[Daniel Wang]

There exist different MPU6050 examples/libraries written specifically for the nRF5x, if thats what you are really looking for... ?

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Update: E.g. take a look at this answer.

[angel]

I saw that, I guess you are referring to this no? (github.com/.../I2CDev). If its that, that part I already have written by myself, because I think in this repository it is a bit outdated.

Or are you referring to another library? Thanks!

[Nguyen Hoan Hoang]

Rename your .c file to .cpp then you can instantiate class from other C++ library.

[angel]

I have already done that several times and I cannot get it to work. I change the extension form c to cpp, I change the kind of file in Keil, and I also try to change the compiler from --c99 to --cpp11. but can't get it to compile.

Thanks!

[Nguyen Hoan Hoang]

The Nordic SDK itself has compile bug with C++. There are a few things that need to be changed. You should post what kind of error you are getting. You can find some info on this blog.