/* * Copyright (c) 2016, University of Bristol - http://www.bristol.ac.uk * 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 cc26xx-trng * @{ * * \file * * This file overrides os/lib/random.c and calls SoC-specific RNG functions */ /*---------------------------------------------------------------------------*/ #include "contiki.h" #include "dev/soc-trng.h" /*---------------------------------------------------------------------------*/ /** * \brief Generates a new random number using the hardware TRNG. * \return The random number. */ unsigned short random_rand(void) { return (unsigned short)soc_trng_rand_synchronous() & 0xFFFF; } /*---------------------------------------------------------------------------*/ /** * \brief Function required by the API * \param seed Ignored. */ void random_init(unsigned short seed) { soc_trng_init(); } /*---------------------------------------------------------------------------*/ /** * @} */