.\_build\nrf52840_xxaa.axf: Error: L6218E: Undefined symbol nrf_drv_ppi_init (referred from adc.o). ?

[RixtronixLAB]

Dear Member,

I want to add ADC the main code,

but I got  :

.\_build\nrf52840_xxaa.axf: Error: L6218E: Undefined symbol nrf_drv_ppi_init (referred from adc.o).

I'm using Keil,

I have added

E:\nRF5_SDK_17.0.2_d674dde\integration\nrfx\legacy

to

and

#include "nrf_drv_saadc.h"
#include "nrf_drv_ppi.h"

and

added -reduce_path as well, but still got the same errors,

I'm using softdevice S340,

How can I rectify it ?

Thanks

[Jørgen Holmefjord]

Hi,

Have you added the source file for the PPI driver (integration\nrfx\legacy\nrf_drv_ppi.c) to your project?

Best regards,
Jørgen

[RixtronixLAB]

Hi Jorgen,

Thanks for the reply,

I have added (integration\nrfx\legacy\nrf_drv_ppi.c) and it's rectified,

I have another one  :

.\_build\nrf52840_xxaa.axf: Error: L6218E: Undefined symbol nrfx_saadc_sample_task_get (referred from adc.o).

Which file is related with it ?

I have added nrf_drv_saadc.h ....?

Thanks

[RixtronixLAB]

this one ?

E:\nRF5_SDK_17.0.2_d674dde\modules\nrfx\drivers\src\nrfx_saadc.c

[Jørgen Holmefjord]

Yes, that is the correct source file.

You will also need to enable the SAADC driver by setting the config 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