121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
|
/**
|
||
|
|
* Copyright (c) 2016 - 2020, 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
|
||
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||
|
|
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#ifndef NRFX_RNG_H__
|
||
|
|
#define NRFX_RNG_H__
|
||
|
|
|
||
|
|
#include <nrfx.h>
|
||
|
|
#include <hal/nrf_rng.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @defgroup nrfx_rng RNG driver
|
||
|
|
* @{
|
||
|
|
* @ingroup nrf_rng
|
||
|
|
* @brief Random Number Generator (RNG) peripheral driver.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @brief Struct for RNG configuration. */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
bool error_correction : 1; /**< Error correction flag. */
|
||
|
|
uint8_t interrupt_priority; /**< Interrupt priority. */
|
||
|
|
} nrfx_rng_config_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief RNG default configuration.
|
||
|
|
* Basic usage:
|
||
|
|
* @code
|
||
|
|
* nrfx_rng_config_t config = NRFX_RNG_DEFAULT_CONFIG;
|
||
|
|
* if (nrfx_rng_init(&config, handler)
|
||
|
|
* { ...
|
||
|
|
* @endcode
|
||
|
|
*/
|
||
|
|
#define NRFX_RNG_DEFAULT_CONFIG \
|
||
|
|
{ \
|
||
|
|
.error_correction = NRFX_RNG_CONFIG_ERROR_CORRECTION, \
|
||
|
|
.interrupt_priority = NRFX_RNG_CONFIG_IRQ_PRIORITY, \
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @brief RNG driver event handler type. */
|
||
|
|
typedef void (* nrfx_rng_evt_handler_t)(uint8_t rng_data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Function for initializing the nrfx_rng module.
|
||
|
|
*
|
||
|
|
* @param[in] p_config Pointer to the structure with the initial configuration.
|
||
|
|
* @param[in] handler Event handler provided by the user. Must not be NULL.
|
||
|
|
*
|
||
|
|
* @retval NRFX_SUCCESS Driver was successfully initialized.
|
||
|
|
* @retval NRFX_ERROR_ALREADY_INITIALIZED Driver was already initialized.
|
||
|
|
*/
|
||
|
|
nrfx_err_t nrfx_rng_init(nrfx_rng_config_t const * p_config, nrfx_rng_evt_handler_t handler);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Function for starting the generation of random values.
|
||
|
|
*
|
||
|
|
* New data should be handled by handler passed to the @ref nrfx_rng_init() function.
|
||
|
|
*/
|
||
|
|
void nrfx_rng_start(void);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Function for stopping the generation of random values.
|
||
|
|
*
|
||
|
|
* Function disables interrupts in peripheral and stops the generation of new random values.
|
||
|
|
*/
|
||
|
|
void nrfx_rng_stop(void);
|
||
|
|
|
||
|
|
/** @brief Function for uninitializing the nrfx_rng module. */
|
||
|
|
void nrfx_rng_uninit(void);
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
|
||
|
|
void nrfx_rng_irq_handler(void);
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // NRFX_RNG_H__
|