logs not working in pwm_library example

[amarjeet]

Hi,

I am using sdk 14.2.0.

there is no logs in pwm_library example.

even though i add it,it's not working.

bellow lines are added in Makefile:

$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_backend_rtt.c \
$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_backend_serial.c \
$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_backend_uart.c \
$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_default_backends.c \
$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_str_formatter.c \
$(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_frontend.c \

and using log_init() in main;

static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);

NRF_LOG_DEFAULT_BACKENDS_INIT();

}

in the main file:

log_init();
NRF_LOG_INFO("Inside main");
NRF_LOG_FLUSH();

please let me know if other configurations are required.

Thanks,

Amarjeet

[Einar Thorsrud]

Hi,

Have you enabled logging in the projects sdk_config.h file? I recommend you copy the relevant parts (defines starting with NRF_LOG_) from another example project that use logging by default, as the sdk_config.h for the PWM library example does not include them.

[amarjeet]

Thanks Einer for ur kind reply,issue resolved now.

but, can u please guide me, how to disable pwm.

since, my requirement is, i want to run vibartion motor for 3 sec and after that stop for next 3 second.

how to do it??

[amarjeet]

please guide me how to do it, for pwm_driver example.

as i am able to do in pwm_library example by using:

app_pwm_disable(&PWM1);
app_pwm_uninit(&PWM1);

shall i compile the thease function containing source file???

or if there is function available for driver level , pls let me know.

i have tried using  :

nrf_drv_pwm_uninit(&m_pwm2);

but its not working for me accordingly.

[amarjeet]

hey einer,

i can see that

pwm_update_duty_cycle(0);

is turning led off, but when i interface vibartion motor, still it is vibrating a little.

please recollect my all doubts, and guide me.

thanks

[Einar Thorsrud]

Hi,

You should call app_pwm_disable() if you want to stop the PWM signal. This will set the GPIO to the polarity that was configured for that pin during initialization.