Add Tone.h into my project

[Benneb]

Hi DevZone,

I've see sample application nrf/applications/nrf5340_audio use tone.h for tone test, and I want to add this function to my project.

In nrf/applications/nrf5340_audio I see it just include "tone.h" and works, but it doesn't work for me.

"undefined reference to `tone_gen'" will occur while I'm compiling.

Does anyone knows how to do it?

[Vidar Berg]

Hello,

Please ensure you have 'CONFIG_TONE=y' in your project configuration file (prj.conf). This is needed to include the tone generator libary in the build.

Best regards,

Vidar

[Benneb]

Hi Vidar,

Thank you for the reply. it works!

But how can I know which CONFIG should I use if similar case happen?

Is there any document list how this logic works?

Best regards,

Benneb

[Vidar Berg]

Hi Benneb,

Thanks for confirming that it worked. The available configuration symbols are usually specified in the documentation for the specific library or module. Here for the Tone generator lib: https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/nrf/libraries/others/tone.html 

Best regards,

Vidar