Hi, i am working on PWM to operate vibration motor with different frequency levels. so that i integrated PWM Library example to my ble_app_uart example. in the PWM example i initialised PWM. i just want to run this for only 1 or 2 sec after that it should stop. how to stop it. and how the PWM is generating in the for loop below. here when iam changing time_period in below code i am able to see difference in LED blinking frequency. i am unable to understand wt it is doing.
thenk you,
PWM_init {
uint32_t time_period = 200L;
ret_code_t err_code;
/* 2-channel PWM, 200Hz, output on DK LED pins. */
app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_2CH(time_period, ARDUINO_3_PIN, BSP_LED_3);
/* Switch the polarity of the second channel. */
//pwm1_cfg.pin_polarity[1] = APP_PWM_POLARITY_ACTIVE_HIGH;
/* Initialize and enable PWM. */
err_code = app_pwm_init(&PWM,&pwm1_cfg,pwm_ready_callback);
APP_ERROR_CHECK(err_code);
app_pwm_enable(&PWM);
uint32_t value;
while(true)
{
for (uint8_t i = 0; i < 40; ++i)
{
value = (i < 20) ? (i * 5) : (100 - (i - 20) * 5);
ready_flag = false;
/* Set the duty cycle - keep trying until PWM is ready... */
while (app_pwm_channel_duty_set(&PWM, 0, value) == NRF_ERROR_BUSY);
/* ... or wait for callback. */
while(!ready_flag);
APP_ERROR_CHECK(app_pwm_channel_duty_set(&PWM, 1, value));
nrf_delay_ms(50);
}
}
}
