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Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/libraries/libchip/source/trng.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/libraries/libchip/source/trng.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/trng.c b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/trng.c deleted file mode 100644 index 29dddccd77..0000000000 --- a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/trng.c +++ /dev/null @@ -1,122 +0,0 @@ -/* ---------------------------------------------------------------------------- */ -/* Atmel Microcontroller Software Support */ -/* SAM Software Package License */ -/* ---------------------------------------------------------------------------- */ -/* Copyright (c) 2015, Atmel Corporation */ -/* */ -/* All rights reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or without */ -/* modification, are permitted provided that the following condition is met: */ -/* */ -/* - Redistributions of source code must retain the above copyright notice, */ -/* this list of conditions and the disclaimer below. */ -/* */ -/* Atmel's name may not be used to endorse or promote products derived from */ -/* this software without specific prior written permission. */ -/* */ -/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ -/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ -/* DISCLAIMED. IN NO EVENT SHALL ATMEL 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 rtng_module Working with RTNG - * \ingroup peripherals_module - * The TRNG driver provides the interface to configure and use the TRNG - * peripheral.\n - * - * The True Random Number Generator (TRNG) passes the American NIST Special - * Publication 800-22 and Diehard Random Tests Suites. As soon as the TRNG is - * enabled (TRNG_Enable()), the generator provides one 32-bit value every 84 - * clock cycles. Interrupt trng_int can be enabled through TRNG_EnableIt() - * (respectively disabled in TRNG_IDR). - * This interrupt is set when a new random value is available and is cleared - * when the status register is read (TRNG_SR register). The flag DATRDY of - * the status register (TRNG_ISR) is set when the random data is ready to be - * read out on the 32-bit output data through TRNG_GetRandData(). - * - * For more accurate information, please look at the SHA section of the - * Datasheet. - * - * Related files :\n - * \ref trng.c\n - * \ref trng.h\n - */ -/*@{*/ -/*@}*/ - -/** - * \file - * - * Implementation of True Random Number Generator (TRNG) - * - */ - -/*---------------------------------------------------------------------------- - * Headers - *----------------------------------------------------------------------------*/ - -#include "chip.h" - -/*---------------------------------------------------------------------------- - * Exported functions - *----------------------------------------------------------------------------*/ - -/** - * \brief Enables the TRNG to provide Random Values. - * \param key This key is to be written when the ENABLE bit is set. - */ -void TRNG_Enable(void) -{ - TRNG->TRNG_CR = TRNG_CR_ENABLE | TRNG_CR_KEY_PASSWD; -} - -/** - * \brief Disables the TRNG to provide Random Values. - * \param key This key is to be written when the DISABLE bit is set. - */ -void TRNG_Disable(void) -{ - TRNG->TRNG_CR = TRNG_CR_KEY_PASSWD; -} - -/** - * \brief Data Ready Interrupt enable. - */ -void TRNG_EnableIt(void) -{ - TRNG->TRNG_IER = TRNG_IER_DATRDY; -} - -/** - * \brief Data Ready Interrupt Disable. - */ -void TRNG_DisableIt(void) -{ - TRNG->TRNG_IDR = TRNG_IDR_DATRDY; -} - -/** - * \brief Get the current status register of the given TRNG peripheral. - * \return TRNG status register. - */ -uint32_t TRNG_GetStatus(void) -{ - return TRNG->TRNG_ISR; -} - -/** - * \brief Get the 32-bit Output Data from TRNG peripheral. - * \return TRNG output data. - */ -uint32_t TRNG_GetRandData(void) -{ - return TRNG->TRNG_ODATA; -} |