121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
/**
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* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef NRFX_RNG_H__
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#define NRFX_RNG_H__
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#include <nrfx.h>
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#include <hal/nrf_rng.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup nrfx_rng RNG driver
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* @{
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* @ingroup nrf_rng
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* @brief Random Number Generator (RNG) peripheral driver.
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*/
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/** @brief Struct for RNG configuration. */
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typedef struct
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{
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bool error_correction : 1; /**< Error correction flag. */
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uint8_t interrupt_priority; /**< Interrupt priority. */
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} nrfx_rng_config_t;
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/**
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* @brief RNG default configuration.
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* Basic usage:
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* @code
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* nrfx_rng_config_t config = NRFX_RNG_DEFAULT_CONFIG;
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* if (nrfx_rng_init(&config, handler)
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* { ...
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* @endcode
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*/
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#define NRFX_RNG_DEFAULT_CONFIG \
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{ \
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.error_correction = NRFX_RNG_CONFIG_ERROR_CORRECTION, \
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.interrupt_priority = NRFX_RNG_CONFIG_IRQ_PRIORITY, \
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}
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/** @brief RNG driver event handler type. */
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typedef void (* nrfx_rng_evt_handler_t)(uint8_t rng_data);
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/**
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* @brief Function for initializing the nrfx_rng module.
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*
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* @param[in] p_config Pointer to the structure with the initial configuration.
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* @param[in] handler Event handler provided by the user. Must not be NULL.
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*
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* @retval NRFX_SUCCESS Driver was successfully initialized.
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* @retval NRFX_ERROR_ALREADY_INITIALIZED Driver was already initialized.
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*/
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nrfx_err_t nrfx_rng_init(nrfx_rng_config_t const * p_config, nrfx_rng_evt_handler_t handler);
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/**
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* @brief Function for starting the generation of random values.
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*
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* New data should be handled by handler passed to the @ref nrfx_rng_init() function.
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*/
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void nrfx_rng_start(void);
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/**
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* @brief Function for stopping the generation of random values.
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*
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* Function disables interrupts in peripheral and stops the generation of new random values.
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*/
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void nrfx_rng_stop(void);
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/** @brief Function for uninitializing the nrfx_rng module. */
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void nrfx_rng_uninit(void);
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/** @} */
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void nrfx_rng_irq_handler(void);
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#ifdef __cplusplus
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}
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#endif
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#endif // NRFX_RNG_H__
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