nrf9160, followed simple steps for nrfx inclusion, but still undefined references

[Alex_O]

Hello, I'm trying to use the PDM in the nrf9160. I'm using SDK tag 1.2.n  I added

#include <nrfx_pdm.h> at the top of my main.c file.

I put

CONFIG_NRFX_PDM=y

in the prj.config file.

I can see that

CONFIG_HAS_NRFX=y

is uncommented in the .config file, yet I still get undefined reference errors for functions called into the nrfx_pdm module. What could be wrong?

Thanks!

[Håkon Alseth]

Hi,

 

In order to use a specific NRFX module in ncs v1.2.0 (and newer), you need to enable it in your project (add it to prj.conf), include the appropriate header in your source file, and reconfigure your project.

For pdm, it would be adding CONFIG_NRFX_PDM=y, and add #include <nrfx_pdm.h> in your source file.

 

If you get an error, I suspect you need to re-import your project. Could you try this and report back?

 

Kind regards,

Håkon

[Alex_O]

Hi Hakon,

I'm not sure what it means to reconfigure the project and re-import the project. Can you clarify?

Thanks!

[Alex_O]

Sorry I got a message saying this is closed. I might have accidentally clicked something I shouldn't have. Please ensure this is not closed since I haven't fixed the problem yet.