owner-nrf52sdk/nRF5_SDK_15.3.0/components/libraries/delay/nrf_delay.h

/**
 * Copyright (c) 2011 - 2019, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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 */

#ifndef _NRF_DELAY_H
#define _NRF_DELAY_H

#include <nrfx.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Function for delaying execution for a number of microseconds.
 *
 * @param us_time Number of microseconds to wait.
 */
#define nrf_delay_us(us_time) NRFX_DELAY_US(us_time)

/**
 * @brief Function for delaying execution for a number of nanoseconds.
 *
 * @param us_time Number of nanoseconds to wait.
 */
#define nrf_get_mini_ns(void) NRFX_GET_MINI_NS(void)
#define nrf_delay_ns(ns_time) NRFX_DELAY_NS(ns_time)
	
/**
 * @brief Function for delaying execution for a number of milliseconds.
 *
 * @param ms_time Number of milliseconds to wait.
 */

__STATIC_INLINE void nrf_delay_ms(uint32_t ms_time)
{
    if (ms_time == 0)
    {
        return;
    }

    do {
        nrf_delay_us(1000);
    } while (--ms_time);
}

#ifdef __cplusplus
}
#endif

#endif