Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

Wayne — Tue, 12 Dec 2017 18:34:38 GMT

its linking now, I had to also enable the following in sdk_config.h (or makefile -D)

PWM0_ENABLED PWM1_ENABLED PWM2_ENABLED

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

Wayne — Tue, 12 Dec 2017 17:08:58 GMT

forgot to say I did also already add: $(SDK_ROOT)/components/drivers_nrf/pwm/nrf_drv_pwm.c \

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

Wayne — Tue, 12 Dec 2017 17:05:01 GMT

Hi,

I've tried setting the define as a -D in the Makefile: CFLAGS += -DPWM_ENABLED=1

and in the sdk_config.h: #define PWM_ENABLED 1

I'm trying to add PWM driver demo2 to the HRS BLE example and am getting this error:

nRF5_SDK_14.2.0_17b948a/examples/ble_peripheral/ble_app_hrs/pca10040/s132/armgcc//../../../main.c:1066: undefined reference to nrf_drv_pwm_init' nRF5_SDK_14.2.0_17b948a/examples/ble_peripheral/ble_app_hrs/pca10040/s132/armgcc//../../../main.c:1108: undefined reference tonrf_drv_pwm_complex_playback'

Is it necessary to go thru a SoftDevice API, hmmm...

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

bjorn-spockeli — Tue, 27 Sep 2016 06:41:08 GMT

Make sure that #define PWM_ENABLED in sdk_config.h is set to 1. We have introduced a new SDK header config file in SDK 12, see this Infocenter page.

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

had23j — Mon, 26 Sep 2016 21:54:06 GMT

I am using Keil and I did include nrf_drv_pwm.c. I don't think that keil linked nrf_drv_pwm.c to the project because all the methods that I used from the pwm driver give me errors like nrf_drv_pwm_init and nrf_drv_pwm_simple_playback. The error is as shown in the post above.

RE: Error: L6218E: Undefined symbol nrf_drv_pwm_init (referred from main.o).

bjorn-spockeli — Fri, 23 Sep 2016 06:25:22 GMT

Are you using Keil? Have you remembered to add the nrf_drv_pwm.c to your project?