nes-proj/arch/cpu/simplelink-cc13xx-cc26xx/dev/trng-arch.h

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/*
* Copyright (c) 2018, Texas Instruments Incorporated - http://www.ti.com/
* 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 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 the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER 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.
*/
/**
* \addtogroup cc13xx-cc26xx-cpu
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* @{
*
* \defgroup cc13xx-cc26xx-trng True Random Number Generator for CC13xx/CC26xx.
* @{
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*
* \file
* Header file of True Random Number Generator for CC13xx/CC26xx.
* \author
* Edvard Pettersen <e.pettersen@ti.com>
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*/
/*---------------------------------------------------------------------------*/
#ifndef TRNG_ARCH_H_
#define TRNG_ARCH_H_
/*---------------------------------------------------------------------------*/
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#include <contiki.h>
/*---------------------------------------------------------------------------*/
#include <stdbool.h>
#include <stdint.h>
/*---------------------------------------------------------------------------*/
#define TRNG_WAIT_FOREVER (~(uint32_t)0)
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/*---------------------------------------------------------------------------*/
/**
* \brief Generates a stream of entropy from which you can create
* a true random number from. This is a blocking function
* call with a specified timeout.
* \param entropy_buf Buffer to store a stream of entropy.
* \param entropy_len Length of the entropy buffer.
* \param timeout_us How long to wait until timing out the operation. A
* timeout of TRNG_WAIT_FOREVER blocks forever.
* \return true if successful; else, false.
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*/
bool trng_rand(uint8_t *entropy_buf, size_t entropy_len, uint32_t timeout_us);
/*---------------------------------------------------------------------------*/
#endif /* TRNG_ARCH_H_ */
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/*---------------------------------------------------------------------------*/
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/**
* @}
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* @}
*/