Thank you so much, My problem isn't a linker issue any more. My problems comes from one of the parameter of the methods been a double pointer which cause all my problems, still have to debug that one but maybe in another question. Probably should have notice that one since the constructor was doing ...

I thought those library could be compile in c++ since I don't put an extern C wrapper in all my c++ project but anyway it's something I had already tried and just in case tried again but no change. Here is the console log after I cleaned the project: console_log.txt If there is a better way to send ...

Hi, It does help because now I understand more about how it works. Unfortunately, I am still getting the same error even after cleanning and recompiling. Here are the change I did : -I got rid of the extern C wrapper in the spi.cpp -Here is the spi.h now esp-idf bug #9.png -Here is the main.cpp esp-...

Hi, Lee

Just like you said, I'm getting linker issue. The problem is still appearing even after following all you said to do.
I included a tar ball with my project because now I really don't know what to do Thanks
Dythe

Hi Lee, Thanks for the confirmation of the whole procedure. The only thing I'm not doing at the moment is to put the #include in the extern C. While waiting for my last message to be approved I realise my problem with the compilation failling at step 817/820 was because you should NEVER compile a pr...

Hi Angus, Thanks for your solution, you were right that I needed to include the class '.cpp'. I also had to include the main.cpp in my class cpp to make it work. But today I realised maybe it didn't work because the build failed at step 814 out of 817 with the message : FAILED: esp-idf/esp32/ld/esp3...

Hi, I am using the ESP-IDF V4.0 with the Eclipse plug in and I would like to use C++ to programm. Unfortunately, in the past week, I did'nt found that solution. What I found was to use "extern C app_main()" but this only compile the main with a C compiler witch mean I can write c++ code but not use ...