Linking error with SAADC driver

RE: Linking error with SAADC driver

Jørgen Holmefjord — Mon, 03 Jun 2019 05:58:50 GMT

It looks like you have not included the source file for the legacy PPI driver to the project:

integration\nrfx\legacy\nrf_drv_ppi.c

RE: Linking error with SAADC driver

michael1 — Sun, 02 Jun 2019 21:56:24 GMT

Hi,

I actually fixed the problem using the method you suggested after looking at Jorgen's and Chris's answer. I realized that there is actually two saadc enables and I only enabled the nrfx_saadc_enabled.

#ifndef SAADC_ENABLED
#define SAADC_ENABLED 1
#endif

#ifndef NRFX_SAADC_ENABLED
#define NRFX_SAADC_ENABLED 1
#endif

However, I am wondering if you can help with a very similar linking issue with the PPI driver. I have added the PPI driver file and enabled it in the sdk_config.h file. However, I am getting a linking error seen below. I have attached the project files for the attached a link for the project.

github.com/.../ble_app_template copy

Building ‘ble_app_template_pca10056_s140’ from solution ‘ble_app_template_pca10056_s140’ in configuration ‘Release’
  Compiling ‘main.c’
  Linking ble_app_template_pca10056_s140.elf
    Output/ble_app_template_pca10056_s140 Release/Obj/main.o: in function `saadc_sampling_event_init':
    undefined reference to `nrf_drv_ppi_init'
Build failed

RE: Linking error with SAADC driver

Chris_Dev — Tue, 28 May 2019 11:53:39 GMT

Hi Michaell,

I had the same issue, even after changing the sdk_config.h file and adding the source files to my project.

Jorgen is correct, this should be sufficient.

A temporary fix for this is to go to the nrfx_saadc.c file and add #define NRFX_SAADC_ENABLED 1 to the top of the file. See below:

Regards

Chris

RE: Linking error with SAADC driver

Jørgen Holmefjord — Mon, 27 May 2019 14:51:24 GMT

Adding the source file and enabling the module should be sufficient. Are you sure that you did not include multiple sdk_config.h files, or if there is something else in the project that overwrites the config?

Can you upload the project for debugging?

RE: Linking error with SAADC driver

michael1 — Fri, 24 May 2019 22:33:12 GMT

Hi,

I have enabled the SAADC in the sdk_config.h file. The error still persist? Is there any else I am missing when adding a driver other than adding the driver file to the project and enabling in sdk_config.h?

Thanks

RE: Linking error with SAADC driver

Jørgen Holmefjord — Fri, 24 May 2019 07:46:17 GMT

Hi,

Have you enabled the SAADC legacy driver by setting the following define in your sdk_config.h file?

// <e> SAADC_ENABLED - nrf_drv_saadc - SAADC peripheral driver - legacy layer
//==========================================================
#ifndef SAADC_ENABLED
#define SAADC_ENABLED 1
#endif

Best regards,
Jørgen