main.c

/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */

/** @file
 * @defgroup pwm_example_main main.c
 * @{
 * @ingroup pwm_example
 * 
 * @brief  PWM Example Application main file.
 *
 * This file contains the source code for a sample application using PWM.
 *
 *
 */

#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#include "app_error.h"
#include "bsp.h"
#include "nrf_delay.h"
#include "app_pwm.h"

#define TIMER1_INSTANCE_INDEX      (TIMER0_ENABLED)


APP_PWM_INSTANCE(PWM1,1);                   // Create the instance "PWM1" using TIMER1.

static volatile bool ready_flag;            // A flag indicating PWM status.


int main(void)
{
    ret_code_t err_code;

    app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(2000L, 28);

    pwm1_cfg.pin_polarity[0] = APP_PWM_POLARITY_ACTIVE_LOW;



    /* Initialize and enable PWM. */
    err_code = app_pwm_init(&PWM1,&pwm1_cfg,NULL);

    APP_ERROR_CHECK(err_code);
    app_pwm_enable(&PWM1);


    while(true)
    {
        int dutyCycle = 0;
        /* Set the duty cycle - keep trying until PWM is ready... */
        while(app_pwm_channel_duty_set(&PWM1, 0, dutyCycle) == NRF_ERROR_BUSY);

        // enter into sleep mode
        __SEV();
        __WFE();
        __WFE();
    }

}


/** @} */