NRF52832 error : Not enough information to list image symbols, .\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_init (referred from main.o).

[omar]

i try to modify the saadc exemple program by includding pwm , but after including header file in the application , source in driver, and includding target, i get error always: linking...

.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_channel_duty_set (referred from main.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_enable (referred from main.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_init (referred from main.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 3 error messages.

what the solution if you know !

[Jørgen Holmefjord]

Have you enabled the PWM library in sdk_config.h by setting #define APP_PWM_ENABLED 1?

[omar]

Thank you for your answer, Yes I have this in sdk_config.h :

#ifndef APP_PWM_ENABLED
#define APP_PWM_ENABLED 1
#endif

And I always have the same errors

[Jørgen Holmefjord]

Did you also include app_pwm.c in your project?

[omar]

Yes, I have app_pwm.c in the folder 'nRF_Drivers'

[Jørgen Holmefjord]

Please check that you do not have multiple sdk_config.h files included or that you have not defined APP_PWM_ENABLED somewhere else. The two things I mentioned above is the only things required to not get this error message.