How to use app_pwm module?

[Hansome]

Is there any example for how to use app_pwm module?

I want to control the LED effect, Thanks!

[OlaHallstrom]

I'm using the nrf_pwm driver if you want to use that. Code ripped out of its context and with very basic usage but you get the idea...

#include "nrfx_pwm.h"

static nrf_pwm_values_common_t seq_values[] = {0};
nrf_pwm_sequence_t const seq =
{
    .values.p_common     = seq_values,
    .length              = NRF_PWM_VALUES_LENGTH(seq_values),
    .repeats             = 0,
    .end_delay           = 0
};

static nrfx_pwm_config_t const config_pwm =
{                                                                             \
    .output_pins  = {LED_PIN,                                                \
                     NRFX_PWM_PIN_NOT_USED,                                   \
                     NRFX_PWM_PIN_NOT_USED,                                   \
                     NRFX_PWM_PIN_NOT_USED },                                 \
    .irq_priority = PWM_DEFAULT_CONFIG_IRQ_PRIORITY,                          \
    .base_clock   = (nrf_pwm_clk_t)PWM_DEFAULT_CONFIG_BASE_CLOCK,             \
    .count_mode   = (nrf_pwm_mode_t)PWM_DEFAULT_CONFIG_COUNT_MODE,            \
    .top_value    = PWM_DEFAULT_CONFIG_TOP_VALUE,                             \
    .load_mode    = (nrf_pwm_dec_load_t)PWM_DEFAULT_CONFIG_LOAD_MODE,         \
    .step_mode    = (nrf_pwm_dec_step_t)PWM_DEFAULT_CONFIG_STEP_MODE,         \
};

static nrfx_pwm_t m_pwm0 = NRFX_PWM_INSTANCE(0);

main{}
{
    APP_ERROR_CHECK(nrfx_pwm_init(&m_pwm0, &config_pwm, NULL));
    seq_values[0] = 10*(100-duty_cycle);
    nrfx_pwm_simple_playback(&m_pwm0, &seq, 1, NRFX_PWM_FLAG_LOOP);
}

Regards

//Ola

[OlaHallstrom]

If you prefer the app_pwm module over the driver, there are probably examples in SDK (I'm using SDK 15.0.0, don't know how it is in your case) which will be a good start.

..\examples\peripheral\pwm_library\...

[Hansome]

Thanks!

[Hansome]

Thanks!